CN101772745B - 具有加速度传感器的过程变量变送器 - Google Patents
具有加速度传感器的过程变量变送器 Download PDFInfo
- Publication number
- CN101772745B CN101772745B CN200880102161.4A CN200880102161A CN101772745B CN 101772745 B CN101772745 B CN 101772745B CN 200880102161 A CN200880102161 A CN 200880102161A CN 101772745 B CN101772745 B CN 101772745B
- Authority
- CN
- China
- Prior art keywords
- process variable
- transmitter
- acceleration
- accelerometer
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/028—Acoustic or vibration analysis
Abstract
一种用在工业过程控制或监测系统中的过程变量变送器(12)，包括变送器外壳以及具有与过程变量相关的传感器输出的过程变量传感器(72)。加速度计(80)耦合至变送器并提供与加速度相关的加速度计输出。诊断电路(82)提供根据传感器输出和加速度计输出的诊断输出。
Description
技术领域
本发明涉及过程变量变送器，更具体地，本发明涉及用于控制或监测工业过程的那种变送器。
背景技术
工业过程用在工业制造中。有各种类型的现场设备用于监测过程。例如，可以感测如压力、流量、温度等过程变量。除了使用该信息来监测过程外，还可以使用过程变量来控制该过程。
过程变量是使用一般已知为过程变量变送器的现场设备来感测的。在许多实例中，期望对工业过程的操作进行诊断并对该过程及关联设备的条件进行识别。例如，可以使用诊断来识别工业过程中的故障，例如以使得可以替换故障组件。诊断的其他用途包括：在即将发生的故障发生之前识别该故障。这允许在期望的时间不必停止该过程就能替换或修复该组件。
对振动进行感测是一种用于诊断过程控制设备的方法。例如，可以在控制设备上直接放置振动传感器(如加速度计)，并可以使用该振动传感器来感测由设备产生的振动噪声信号。例如，可以监测由泵用电动机产生的噪声。隔离振并通过识别超出振幅阈值或具有异常频率的那些振动来估计振动。这可以指示实际的或即将发生的故障。具体示例包括泵或电动机外壳上放置的传感器、排除阀或者与控制设备相关联的凸缘。另一已知诊断方法是手动检查，其中操作者侦听来自控制设备的异常声音。在工业过程控制或监测系统中目前正需要改进的诊断技术，用于检测已发生故障的组件以及已退化或处于故障过程中的组件。各种技术是在以下专利中示出的：2003年7月29日提交的、标题为“Process Device Diagnostics Using Process Variable SensorSignal”的美国专利No.6,601,005；2005年4月7日公布的、标题为 “Process Device with Vibration Based Diagnostics”的美国公开No.2005/0072239；以及2006年3月7日发布的、标题为“Process Device Diagnostics Using Process Variable Sensor Signal”的美国专利No.7,010,459。
发明内容
一种用在工业过程控制或监测系统中的过程变量变送器，包括变送器外壳以及具有与过程变量相关的传感器输出的过程变量传感器。加速度计与变送器(例如，变送器外壳、过程变量传感器或其他组件)相关联并提供与加速度相关的加速度计输出。诊断电路根据传感器输出和加速度计输出来提供诊断输出。
附图说明
图1是包括耦合至过程管线的过程变送器的工业过程的示意图。
图2是图1的过程变送器中的电路和组件的框图。
图3是用于实现本发明的过程设备的简化框图。
图4是示出了根据本发明一种配置的简化步骤的框图。
具体实施方式
本发明提供了一种诊断技术，用于检测故障，或者在故障发生或性能下降之前预测即将发生的故障或者过程设备或过程组件的性能下降。利用本发明，监测过程和/或过程设备中的振动。根据感测到的振动信号，并且进一步根据感测到的过程变量来检测振动，并使用该振动来预测故障、即将发生的故障、或者过程设备或过程组件的性能下降。
图1示出了过程控制系统10的图，过程控制系统10包括连接至过程管道16的变送器12。变送器12耦合至两线过程控制回路18，两线过程控制回路18根据Fieldbus、Profibus或 标准来进行操作。然而，本发明不限于这些标准或两线配置。两线过程控制回路18运行在变送器12与控制室20之间，并且便携式配置单元226在以下实施例中示出： 其中，回路18根据 
协议来进行操作，回路18可以承载表示感测到的过程变量的电流I。此外， 
协议允许在经过回路18的电流上叠加数字信号，使得可以向变送器12发送数字信息或从变送器12接收数字信息。当根据Fieldbus标准来进行操作时，回路18承载数字信号并可以耦合至多个现场设备(例如，其他变送器)。在一种配置中，回路18包括无线回路，并且发送器12在不需要附加布线的情况下进行通信。
典型地，过程变量是在过程中正被控制的主变量。如此处所使用，过程变量表示对过程的条件(例如压力、流量、温度、产品级、pH、浊度、振动、位置、电动机电流、过程的任何其他特性等等)进行描述的任何变量。控制信号表示用于对过程进行控制的任何信号(除过程变量以外)。例如，控制信号表示期望的过程变量值(即，设定点)，例如期望的温度、压力、流量、产品级、pH或浊度等，期望的过程变量值是由控制器调整的或者用于控制过程。此外，控制信号表示校准值、警报、警报条件、被提供给控制元件的信号(如被提供给阀致动器的阀位置信号)、被提供给发热元件的能级、螺线管接通/关断信号等或者与过程的控制相关的任何其他信号。此处使用的诊断信号包括与过程控制回路中的设备和元件的操作相关的信息，但不包括过程变量或控制信号。例如，诊断信号包括阀杆位置、所施加的力矩或力、致动器压力、用于对阀进行致动的压缩气体的压力、电压、电流、功率、电阻、电容、电感、设备温度、收缩、摩擦力、全部接通和关断位置、冲程、频率、振幅、谱和谱分量、刚性、电或磁场强度、持续时间、强度、运动、电动机反电动势、电动机电流、回路相关参数(例如控制回路电阻、电压或电流)或者可在系统中检测或测量到的任何其他参数。此外，过程信号表示与过程或过程中的元件相关的任何信号，例如，过程变量、控制信号或诊断信号。过程设备包括形成过程控制回路一部分或耦合至该过程控制回路且用在过程的控制或监测中的任何设备。
应当理解，在一种配置中示出了回路18，并且可以使用任何适当的过程控制回路，例如4-20mA回路、2线、3线或4线回路、多点回路 以及根据 
、Fieldbus或者包括无线通信协议在内的其他数字或模拟通信协议进行操作的回路。在操作中，变送器12使用传感器21来对过程变量(例如流量)进行感测，并通过回路18来变送感测到的过程变量。
根据本发明的一个实施例，过程设备(如变送器12)包括被配置为感测振动的振动传感器。振动传感器可以是任何类型的振动传感器(如加速度计)，但本发明不限于这种传感器。变送器12中或远程位置处的诊断电路监测感测到的振动和感测到的过程变量，并能够诊断故障或即将发生的故障。变送器12可以通过两线过程控制回路18来提供输出至例如控制室20或通信装置26，该输出提供过程组件的故障或即将发生的故障的指示。使用该信息，操作者可以修复或替换故障组件，或者在组件最终发生故障之前修复或替换该组件。这允许在预定时间或在期望时任意地对过程10进行维护。这在组件的修复或替换需要停止过程10的情况下是特别有利的。此外，一些组件可能发生灾难性的故障，或者发生导致其他组件损坏或导致向环境释放不安全产品的故障。通过提供对组件可能在将来发生故障的指示，或预测最终故障的时间，可以在最终故障之前修复或替换该组件。
图2是示出了耦合至过程管线16的过程变送器12的图。振动70被示出为通过工业过程而传播。例如，振动70可以通过过程管线16、管线16内的过程流体或其他物理耦合而传送至变送器12。
变送器12包括过程变量传感器72。过程变量传感器72可以被配置为感测任何类型的过程变量，如流量、压力、温度等等。过程变量传感器72耦合至测量电路74，测量电路74向I/O电路76提供过程变量信号。I/O电路76被配置为通过两线过程控制回路18来变送与感测到的过程变量相关的信息。在一些实施例中，I/O电路76还可以通过过程控制回路18来接收功率，以用于向变送器12的电路和组件完全供电。测量电路74还耦合至诊断电路82并向腔82提供与感测到的过程变量相关的信号。
变送器12中的振动传感器80被配置为感测振动70并向诊断电路82提供振动传感器信号。诊断电路82监测由振动传感器80感测到的振 动70以及由测量电路74提供的、从传感器72感测到的过程变量，并经由I/O电路76来提供输出，该输出提供过程组件的故障或即将到来的故障的指示。备选地，I/O电路可以提供指示变送器正常工作的状态输出。
在一些实施例中，本发明的振动诊断可以用于在仍有时间替换或修复设备时通过预测测量仪器或控制仪器的即将到来的损耗来避免或减少工厂停工期。还可以将振动信息提供给与过程控制回路18进行通信的其他设备。数据压缩算法可以用于这种变送。可以在两线过程控制回路18上提供诊断指示。例如，可以通过回路18来传输HART状态、现场总线数据或其他警报。这种警报可以被提供给控制室20。
振动传感器80可以是任何类型的振动传感器。许多振动传感器沿着单一轴来进行操作，并仅能够感测沿着该轴的振动。然而，在一个实施例中，采用附加传感器或多轴传感器来感测沿着多于一个轴的振动或描述过程设备中的各个位置处的振动。诊断电路82可以使用附加的感测到的振动来提供另外的诊断。此外，振动传感器80可以置于过程变送器12中的多于一个的位置。这些附加传感器还可以用于与感测到的过程变量一起或与感测到的过程变量相结合地提供基于附加振动的过程诊断。可以通过单独地或与感测到的过程变量一起对来自位于过程系统中的多于一个的过程设备的振动测量进行比较或分析，来扩展诊断的范围。附加测量可以用于提供与过程或工厂的总体健康状况相关的信息。在过程设备与过程的连接附近进行的振动测量可以用于检测特定的过程中断，例如突然的阀关闭所引起的气体撞击、气穴现象、侵蚀性的化学反应或其他过程扰动、以及泵、旋转设备的实际或即将发生的故障、或类似类型的故障。
尽管图2中将I/O电路76、测量电路74和诊断电路82示出为单独的组件，但可以以共享电路和/或软件来实现这些电路块。例如，可以在数字处理器中实现这些功能中的许多。除了与过程变量相结合地将感测到的振动或累积的感测到的振动与固定阈值进行比较以外，诊断电路82还可以采用其他诊断技术。例如，可以基于振动和感测到的过程变量，使用用在诊断操作中的如果/那么(if/then)规则，来实现专家系统。诊断可以基于感测到的振动和过程变量的频谱，并且，可以采 用更复杂的处理，例如神经网络、模糊逻辑等。
图3是形成回路18一部分的过程设备240的框图。总体示出了设备240，设备240可以包括用于实现振动诊断的任何过程设备(如变送器12)。过程设备240包括在端子244处耦合至回路18的I/O电路242。设备240包括耦合至I/O电路242的微处理器246、耦合至微处理器246的存储器248以及耦合至微处理器246的时钟250。微处理器246接收过程信号输入252。过程信号输入块252表示任何过程信号的输入，并且过程信号输入可以是过程变量或控制信号，并可以是使用I/O电路242从回路18接收到的，或可以是在过程设备240内部产生的。
过程设备240包括传感器输入通道254。传感器输入通道254包括：传感器21，感测过程变量并向放大器258提供传感器输出，放大器258具有由模数转换器260进行数字化的输出。通道254典型地用在变送器(如变送器12)中。补偿电路262补偿数字化的信号并向微处理器246提供数字化的过程变量信号。
在一个实施例中，I/O电路242提供功率输出，该功率输出用于使用从回路18接收到的功率向过程设备240中的一些或全部其他电路完全供电。典型地，现场设备(如变送器12)或控制器22是从回路18供电的，而通信装置26或控制室20具有单独的电源。如上所述，过程信号输入252向微处理器246提供过程信号。过程信号可以是来自传感器21的过程变量、被提供给控制元件的控制输出、由传感器80感测到的诊断信号、或者通过回路18接收到的控制信号、过程变量或诊断信号、或者通过一些其他装置(如另一I/O通道)接收到或产生的过程信号。
用户I/O电路276还连接至微处理器246，并提供设备240与用户之间的通信。典型地，用户I/O电路276包括用于输出的显示器和/或音频以及用于输入的小键盘或其他接口。I/O电路276可以用于允许用户监测或输入过程信号，例如过程变量、控制信号(设定点、校准值、警报、警报条件等)。
图3还示出了可作为单独传感器的振动传感器80，或者，该振动传感器80可以包括多个传感器或组件。在一个实施例中，传感器80通过例如模数转换器290和放大器292耦合至微处理器246。微处理器246可以监测感测到的振动以及过程信号(如感测过程变量)，并提供过程组件的故障或即将到来的故障的指示。例如，微处理器可以将感测到的振动与过程变量之间的关系同基线值或额定值进行比较。类似地，可以将过程变量输出与感测到的振动进行比较，以识别故障过程变量读数。该信息可以存储于存储器248中。基线值和额定值可以基于过程的操作模式或其他因素而改变。基线可以是特定的频谱或签名，并可以基于观察到的过程操作的历史。此外，由微处理器246执行的诊断可以基于感测到的振动和感测到的过程变量中的趋势。例如，感测到的振动和感测到的过程变量中的随时间逐渐或突然的增加、周期性的尖峰或其他异常可以是过程组件的故障或即将发生的故障的指示。类似地，如果感测到的振动和感测到的过程变量之间的关系突然改变，则微处理器246可以提供指示过程组件可能发生故障或已发生故障的诊断输出。这些值、趋势或训练简档(profile)也可以存储于存储器248中。诊断可以基于比较、或更复杂的数学技术(例如，观察测量的平均值或滚动平均值)、模糊逻辑技术、神经网络技术或基于一系列规则和/或阈值比较的专家系统技术。在各个实施例中，本发明提供预测性诊断的能力是有利的，这是由于本发明提供了时间以供服务人员在过程组件最终发生故障之前服务于该过程组件。
图3还示出了耦合至微处理器246的撞击器291。撞击器291可以是可选的组件并可以包括被配置为向变送器240引入加速度的任何元件。例如，装有弹簧的锤(spring-loaded hammer)可以由微处理器、螺线管、具有偏重(offset weight)的电动机等来激活。这可以向变送器240提供已知的加速度信号，以用于诊断或用在外部加速度源不可用的配置中。
本发明的诊断输出可以用于提供输出信号，提供本地指示给操作者，或者提供用于传输至控制室的通信信号或提供其他诊断通告。
如上所述，诊断根据了采用感测到的振动和感测到的过程变量的技术。例如，诊断可以利用信号之间的关系在一段时间内的趋势。关于过程变量信号，可以将该信息与轴承或泵组件的磨损相关。此外，诊断电路可以用于将振动信号和感测到的过程变量与在工业过程操作期间发生的各个过程或事件相关。例如，侵蚀性的化学反应可以具有特定的振动签名以及过程变量中的相关变化。在一些实施例中，感测到的过程变量和振动之间的关系(例如，两者之间的变化关系)可以提供诊断条件的指示，例如正在发生故障或以某种方式发生变化的组件。
一方面，振动传感器的输出用于使过程变量传感器的操作有效。例如，可以将压力变送器所经历的振动与测量到的过程变量的变化相关。这种关系是可以随时间监测的，并可以用于使过程变量传感器的正常操作有效。
振动传感器80可以是任何适当的振动传感器。一种已知的振动检测和测量传感器是加速度计。有多种当前采用的不同的加速度计技术，包括电容式、电动式、压电式等等。加速度计产生与感测到的振动相关的输出信号。输出信号可以与振动的强度或振动的频率具有线性的或其他的关系。另一示例诊断传感器可以在MEMS配置中体现，其中利用悬臂来感测振动。
压电式加速度计是相对坚固耐用的，并具有覆盖较大音频范围的、数十kHz量级的宽信号带宽。一个示例传感器由PCBPiezoelectronics提供，并被标识为IMI传感器系列660，这是低成本可嵌入式加速度计的家族。各种可用配置包括具有信号处理的两线配置、没有信号处理的两线配置以及三线低功率。例如，低功率配置在扩展的温度范围内进行操作，并可以直接安装至经历宽温度变化的过程。在例如3伏和5伏DC之间施加激励电压，并且穿过传感器的电流是750微安培的量级。
另一示例加速度计是由Motorola提供的MMA系列。这些加速度计包括各种配置，例如表面安装集成电路封装、温度补偿、积分信号调节和滤波、自测试和故障锁存能力。这些加速度计使用电容式感测技术，电容式感测技术可以被建模为具有在其间可移动的板的两个静止板。当系统经历加速时，中心板从其平衡位置发生偏转。
可以与本发明一起使用任何适当类型的加速度计。例如，电容式加速度计使用金属波束或微型机械特性，其产生响应于加速度而改变 的可变电容。压电式电传感器使用安装至设备的压电式监测器。加速度与压电晶体的电压输出相关。压阻式传感器可以例如使用波束或微型机械特性，其具有响应于加速度而改变的电阻。霍尔效应传感器使用通过感测磁场中的变化来将运动转换为电信号的配置。可以使用各种类型的三接入式(tri-access)加速度计。例如，一种这样的加速度计是Okidata ML8950。另一示例设备可从如AVXL330之类的模拟设备获得。
使用三接入式加速度计，根据本发明的变送器可以被配置为利用两个分离的诊断测量。变送器可以利用加速度计的输出以及过程变量传感器(如压力传感器)的输出。可以对来自这两个设备的信号进行比较以产生唯一的系统诊断。例如，在压力变送器中，可以并入加速度计。加速度计是可以使用手动输入来激活(例如，由操作者用锤或另一重物来撞击)的。可以沿着压力传感器的感测隔膜的轴来引导该冲击。这种未校准的冲击将使加速度计测量加速度并使压力传感器测量压力脉冲。如果两个输出都被检测到，则诊断可以确认设备的正常操作。
作为上述配置的另一实施例，可以将过程变量传感器和加速度计的输出的波形或其他方面进行比较。例如，在一些配置中，响应于变送器上的撞击或其他冲击，可以在压力传感器的输出与加速度计的输出之间观察到线性关系。这些响应的变化可以提供故障(例如，充油流体的损失)的指示。
在一个示例中，装有弹簧的冲压器(punch)用于向设备提供校准的撞击。然而，可以使用任何期望类型的校准撞击。在这种配置中，可以在诊断算法以及过程变量传感器和加速度计的输出中使用撞击的数值。在另一配置中，在诊断中应用多个校准的撞击。例如，可以使用不同数值的撞击，并且可以对过程变量和加速度计的输出中产生的变化进行比较。
在另一示例配置中，环境能量用作“撞击”的源。例如，可以使用水锤效应、泵脉动或机械振动。例如，两个不同的水锤可以产生可用作校准检验的两个不同比较。还可以提供对变送器正在根据性能规范而工作的指示。
在另一示例中，恒定振动造成了传感器过程变量中的偏移(例如感测到的压力中的偏移)。例如，将压力传感器耦合至过程的湿管(wet leg)中的振动使压力传感器指示增大的压力。在一些配置中，压力传感器充当低通滤波器和整流器，使得脉动显现为压力偏移。可以使用过程变量以及监测到的加速度来执行诊断。此外，监测到的加速度也可以用于补偿过程变量，使得使用例如图3所示的微处理器246从过程变量测量中去除由振动造成的偏移。
加速度计80可以安装在任何适当位置。加速度计可以安装至变送器的外壳，或例如直接安装至过程变量传感器(例如直接安装至压力传感器)。然而，在压力模块中典型地隔离压力传感器，并且在一些配置中，压力传感器可以与振动(例如施加给变送器的撞击)隔离。加速度计的外壳和放置可以被设计为增强对特定类型的振动的感受性，或其他的考虑。为了获得由加速度传感器感测到的加速度的详细简档，可以利用高速数据捕获技术。
图4是根据本发明一个实施例的步骤的简化框图300。在框302处启动流程图300，并在框304处监测过程变量。在框306处，监测加速度。框304和306可以顺序地、并行地、次序颠倒地或在包括部分重叠的监测时段在内的任何时间发生。在框308处，根据监测到的过程变量以及监测到的加速度来执行诊断。可以基于存储于存储器248中的编程指令，在图3所示的微处理器246中执行这些诊断。诊断可以根据其中为了确定过程组件的条件或即将发生的条件、过程的操作、过程内的设备或元件的操作等而将两个监测到的值进行比较的任何适当技术。示例包括基于规则的技术、模糊逻辑技术、神经网络技术、人工智能技术等等。在一种配置中，微处理器246使用监测到的加速度来补偿由于变送器或耦合至变送器的组件的加速度而引起的测量到的过程变量中的误差。例如，可以在一些配置中使用监测到的加速度来去除感测到的过程变量中的偏移。在框310处，提供与诊断相关的可选输出。可以例如通过在两线过程控制回路18上进行通信，或使用其他通信技术(如RF或无线技术)，按照期望将该输出传输至远程位置。此外，可以通 过有线或无线连接，在操作者本地或在邻近设备(如测试设备)本地提供输出。在框312处，可选地，通过返回至框302来重复上述过程步骤。在一种配置中，监测加速度框306包括激活撞击器391或其他加速度源。
在一种配置中，图4所示的步骤是可以基于用户输入来激活的。例如，操作者可以通过经由使用两线过程控制回路18的通信或其他技术将适当信号提供给变送器340，来启动框图300的操作。在这种配置中，设备可以被配置为指示操作者在框306处、在监测加速度的同时将加速度施加给变送器240。例如，可以指示操作者在特定位置或沿特定轴撞击变送器。
本发明提供了用于在过程控制监测系统的过程设备中执行诊断或补偿的多种技术。例如，可以使用加速度计来测量导致设备的加速的外部影响，即人工的(例如锤击)或环境的(例如水锤或机械振动)影响。使用加速度计(例如，单轴、双轴或三轴加速度计)和过程变量传感器(例如压力传感器)来测量该加速度的效果。这两个测量可以用于诊断操作，例如验证变送器的正常操作。在其他配置中，操控这两个测量到的信号，例如，可以观察这两个信号的比率，并将这两个信号的比率与校准的外部影响的数值进行比较，以验证变送器的操作。使用这两个信号的比率以及这两个信号的数值、以及外部影响的数值以及外部影响的数值的比率，可以使用其他技术来验证变送器的操作。除了验证操作，可以使用加速度信号来实时地执行校准和补偿。通过监测和分析信号，变送器可以提供关于状态的通知或警报。可以按期望来定位加速度计，例如与过程变量传感器(如压力传感器)或同传感器相关联的电子装置相邻地装配。例如，基于电容的加速度计可以集成在现有或改进的模数转换器(例如，电容-数字集成电路)中。三轴加速度计可以用于执行多种功能，包括：测量振动作为诊断工具、测量设备倾角作为用于自动补偿压力测量中的头效应(head effect)的手段、与对过程变量传感器的影响相比测量对设备的影响以用在变送的验证中、和/或测量加速度以补偿加速度压力偏移。加速度源可以集成至例如装有弹簧的冲压器机械装置等设备中。该机械装置可以由操作者开动，或可以由变送器中的电路自动地开动。在另一种配置中，将机械或压力外部影响结合至将变送器耦合至工业过程的过程连接中。加速度计可以直接连至过程变量传感器，以创建这两个信号之间更加可预测的关系。
在一种配置中，加速度计可以被配置为测量加速度输入的基于时间的周期性。如果加速度影响了过程变量测量(如压力测量)精度，则在“安静”间隔期间进行的测量可以被视为提供更高精度。当加速度计测量可造成测量中的误差的较大加速度输入时，这种系统可以例如保存最近的“良好”值。在另一示例中，在一些配置中，测量到的过程变量的增大(例如，流速的增大)还与振动的增大(例如，增大的泵脉动或更高幅度的管道振动)相对应。可以将来自加速度计中的过程变量“压力”传感器的信号进行比较，作为附加诊断，以在测量到的过程变量中提供更多置信度。
尽管参照优选实施例描述了本发明，但本领域技术人员应当认识到，在不脱离本发明的精神和范围的前提下，可以在形式和细节上作出改变。在一些实施例中，本发明可以在任何类型的过程设备中实现。可以使用任何类型的处理器，包括：使用金属波束或微型机械特性的基于电容式的加速度计，该金属波束或微型机械特性产生关于加速度而改变的电容；使用安装成块的晶体的压电式传感器；其中例如波束的电阻基于加速度而改变的压电式传感器；根据改变的磁场的、基于霍尔效应的传感器等等。本发明的诊断电路可以在任何适当组件中实现。例如，该电路可以在微处理器及关联组件和编程指令中实现，或可以包括其他组件或实施例。示例加速度传感器包括电容式、电动式、压电式和微电子机械系统(MEMS)。
Claims (41)
1.一种用在工业过程控制或监测系统中的过程变量变送器，包括：
过程变量传感器，具有与过程变量相关的传感器输出；
耦合至变送器的加速度计，具有与加速度相关的加速度计输出；以及
诊断电路，具有根据对当前传感器输出和当前加速度计输出进行的比较的诊断输出，所述诊断输出指示了过程设备或组件的诊断条件。
2.根据权利要求1所述的过程变量变送器，包括变送器外壳，其中，所述加速度计耦合至所述变送器外壳。
3.根据权利要求1所述的过程变量变送器，其中，所述加速度计邻近于所述过程变量传感器。
4.根据权利要求1所述的过程变量变送器，其中，所述加速度计包括三轴加速度计。
5.根据权利要求1所述的过程变量变送器，其中，所述过程变量传感器包括压力传感器。
6.根据权利要求1所述的过程变量变送器，包括被配置为耦合至过程控制回路的通信电路。
7.根据权利要求6所述的过程变量变送器，其中，在过程控制回路上传输来自诊断电路的诊断输出。
8.根据权利要求6所述的过程变量变送器，其中，所述诊断输出与过程组件的故障相关。
9.根据权利要求6所述的过程变量变送器，其中，所述诊断输出与过程组件的性能退化相关。
10.根据权利要求6所述的过程变量变送器，其中，所述诊断输出与过程组件的即将发生的故障相关。
11.根据权利要求1所述的过程变量变送器，其中，所述诊断输出用于补偿所述过程变量。
12.根据权利要求1所述的过程变量变送器，其中，所述诊断输出是基于规则的。
13.根据权利要求1所述的过程变量变送器，其中，所述诊断电路实现神经网络或模糊逻辑。
14.根据权利要求1所述的过程变量变送器，其中，所述加速度计是从包括电容式、电动式、压电式和微电子机械系统(MEMS)的一组加速度传感器中选择的。
15.根据权利要求1所述的过程变量变送器，其中，所述诊断电路被配置为控制施加给过程变量变送器的加速度。
16.根据权利要求15所述的过程变量变送器，包括被配置为对所述变送器造成冲击的撞击器。
17.根据权利要求1所述的过程变量变送器，其中，所述加速度计被配置为感测由操作者施加的加速度。
18.根据权利要求1所述的过程变量变送器，其中，所述加速度计被配置为感测施加给所述变送器的校准的加速度。
19.根据权利要求1所述的过程变量变送器，其中，所述诊断电路被配置为对施加给所述变送器的多于一个的校准的加速度中的加速度进行比较。
20.根据权利要求1所述的过程变量变送器，其中，所述过程变量变送器被配置为基于感测到的加速度来控制过程变量的输出。
21.根据权利要求1所述的过程变量变送器，其中，所述加速度计被配置为感测环境加速度。
22.根据权利要求21所述的过程变量变送器，其中，所述环境加速度是来自水锤、泵脉动和机械加速度中的至少一个。
23.根据权利要求1所述的过程变量变送器，其中，所述诊断电路被配置为基于感测到的静态加速度来补偿过程变量的输出。
24.根据权利要求1所述的过程变量变送器，其中，所述加速度计提供用于诊断、过程变量补偿或操作验证之一的输出。
25.根据权利要求1所述的过程变量变送器，包括被配置为存储过程变量的存储器，并且其中，所述过程变量变送器基于存储于存储器中的过程变量，提供根据感测到的加速度的输出。
26.根据权利要求1所述的过程变量变送器，其中，所述诊断输出根据传感器输出与加速度计输出之间的历史关系。
27.一种用于诊断工业过程控制系统中的变送器的操作的方法，包括：
使用加速度计来感测施加给所述变送器的加速度；
测量过程变量；以及
基于对当前感测到的加速度和当前测量到的过程变量进行的比较来诊断所述变送器或过程组件的操作。
28.根据权利要求27所述的方法，其中，所述加速度计耦合至变送器外壳。
29.根据权利要求27所述的方法，其中，所述加速度计邻近于过程变量传感器。
30.根据权利要求27所述的方法，其中，所述加速度计包括三轴加速度计。
31.根据权利要求27所述的方法，其中，感测到的过程变量包括压力。
32.根据权利要求27所述的方法，包括：在过程控制回路上传输诊断信息。
33.根据权利要求27所述的方法，其中，被诊断的操作与过程组件的即将发生的故障相关。
34.根据权利要求27所述的方法，包括：基于诊断步骤来补偿过程变量。
35.根据权利要求27所述的方法，其中，所述诊断是基于规则的。
36.根据权利要求27所述的方法，其中，所述诊断是基于神经网络或模糊逻辑的。
37.根据权利要求27所述的方法，其中，所述加速度计是从包括电容式、电动式、压电式和微电子机械系统(MEMS)的一组加速度传感器中选择的。
38.根据权利要求27所述的方法，包括：控制施加给所述变送器的加速度。
39.根据权利要求27所述的方法，包括：感测由操作者施加的加速度。
40.根据权利要求27所述的方法，包括：感测施加给所述变送器的校准的加速度。
41.根据权利要求27所述的方法，包括：存储过程变量，并且其中，基于所存储的过程变量，根据感测到的加速度来提供输出。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/834,221 US8898036B2 (en) | 2007-08-06 | 2007-08-06 | Process variable transmitter with acceleration sensor |
| US11/834,221 | 2007-08-06 | ||
| PCT/US2008/009394 WO2009020591A1 (en) | 2007-08-06 | 2008-08-05 | Process variable transmitter with acceleration sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101772745A CN101772745A (zh) | 2010-07-07 |
| CN101772745B true CN101772745B (zh) | 2012-11-28 |
Family
ID=39967731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880102161.4A Active CN101772745B (zh) | 2007-08-06 | 2008-08-05 | 具有加速度传感器的过程变量变送器 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8898036B2 (zh) |
| EP (1) | EP2185984B8 (zh) |
| JP (1) | JP5175347B2 (zh) |
| CN (1) | CN101772745B (zh) |
| CA (1) | CA2694936C (zh) |
| RU (1) | RU2450311C2 (zh) |
| WO (1) | WO2009020591A1 (zh) |
Families Citing this family (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8387463B2 (en) * | 2008-10-06 | 2013-03-05 | Rosemount Inc. | Pressure-based diagnostic system for process transmitter |
| US7953575B2 (en) * | 2009-01-27 | 2011-05-31 | Baker Hughes Incorporated | Electrical submersible pump rotation sensing using an XY vibration sensor |
| FR2947309A1 (fr) * | 2009-06-26 | 2010-12-31 | Alcatel Lucent | Procede de prediction d'une defaillance de la rotation du rotor d'une pompe a vide et dispositif de pompage associe |
| DE102010006429A1 (de) * | 2010-02-01 | 2011-08-04 | Siemens Aktiengesellschaft, 80333 | Coriolis-Massendurchflussmessgerät und Verfahren zum Betreiben eines Coriolis-Massendurchflussmessgeräts |
| US20130228003A1 (en) * | 2010-08-02 | 2013-09-05 | Siemens Aktiengesellschaft | Coriolis Mass Flowmeter and Method for Operating a Coriolis Mass Flowmeter |
| RU2471161C1 (ru) * | 2011-09-19 | 2012-12-27 | Открытое акционерное общество "Авангард" | Способ дистанционного контроля и диагностики состояния конструкций и инженерных сооружений и устройство для его осуществления |
| US8578783B2 (en) * | 2011-09-26 | 2013-11-12 | Rosemount Inc. | Process fluid pressure transmitter with separated sensor and sensor electronics |
| DE102011088351A1 (de) * | 2011-12-13 | 2013-06-13 | Endress + Hauser Gmbh + Co. Kg | Vorrichtung zur Bestimmung und/oder Überwachung mindestens einer Prozessgröße |
| US9255578B2 (en) * | 2012-07-31 | 2016-02-09 | Fisher-Rosemount Systems, Inc. | Systems and methods to monitor pump cavitation |
| US9222844B2 (en) * | 2013-02-25 | 2015-12-29 | Rosemount Inc. | Process temperature transmitter with improved sensor diagnostics |
| US9188488B2 (en) * | 2013-03-14 | 2015-11-17 | Rosemount Inc. | Vibration detection in thermowells |
| US11076113B2 (en) | 2013-09-26 | 2021-07-27 | Rosemount Inc. | Industrial process diagnostics using infrared thermal sensing |
| US10638093B2 (en) | 2013-09-26 | 2020-04-28 | Rosemount Inc. | Wireless industrial process field device with imaging |
| US10823592B2 (en) | 2013-09-26 | 2020-11-03 | Rosemount Inc. | Process device with process variable measurement using image capture device |
| US10962622B2 (en) * | 2013-12-23 | 2021-03-30 | Rosemount Inc. | Analog process variable transmitter with electronic calibration |
| US9410546B2 (en) * | 2014-08-12 | 2016-08-09 | Baker Hughes Incorporated | Reciprocating pump cavitation detection and avoidance |
| US10914635B2 (en) * | 2014-09-29 | 2021-02-09 | Rosemount Inc. | Wireless industrial process monitor |
| WO2017058872A1 (en) * | 2015-09-29 | 2017-04-06 | Haemonetics Corporation | System and method for imaging a rotating object |
| US10367612B2 (en) * | 2015-09-30 | 2019-07-30 | Rosemount Inc. | Process variable transmitter with self-learning loop diagnostics |
| CN106771353B (zh) * | 2016-12-23 | 2023-06-02 | 深圳市森瑟科技发展有限公司 | 加速度传感器 |
| AU2017387145A1 (en) * | 2017-03-17 | 2019-10-17 | MOVUS Technologies Pty Ltd | Machine monitoring |
| US11675347B2 (en) * | 2017-06-01 | 2023-06-13 | LeClaire Manufacturing Company | Industrial machine monitoring device |
| CN108362483B (zh) * | 2017-12-11 | 2021-05-18 | 中国船舶重工集团公司第七一九研究所 | 一种管路系统的监测方法和监测系统 |
| CN108354241A (zh) * | 2018-04-19 | 2018-08-03 | 三峡大学 | 一种基于安全气囊技术的高空带电作业防护服 |
| US20200133254A1 (en) * | 2018-05-07 | 2020-04-30 | Strong Force Iot Portfolio 2016, Llc | Methods and systems for data collection, learning, and streaming of machine signals for part identification and operating characteristics determination using the industrial internet of things |
| WO2019236897A1 (en) | 2018-06-08 | 2019-12-12 | Orbis Intelligent Systems, Inc. | Pipe sensors |
| US11698314B2 (en) | 2018-06-08 | 2023-07-11 | Orbis Intelligent Systems, Inc. | Detection device for a fluid conduit or fluid dispensing device |
| US11733115B2 (en) | 2018-06-08 | 2023-08-22 | Orbis Intelligent Systems, Inc. | Detection devices for determining one or more pipe conditions via at least one acoustic sensor and including connection features to connect with an insert |
| US10718447B2 (en) | 2018-06-29 | 2020-07-21 | Eaton Intelligent Power Limited | System and method for detecting valve operating conditions |
| US20210215645A1 (en) * | 2019-02-20 | 2021-07-15 | Latency, LLC | Systems, methods, and media for generating alerts of water hammer events in steam pipes |
| US11428735B1 (en) * | 2019-03-14 | 2022-08-30 | Maxim Integrated Products, Inc. | System for monitoring and controlling an integrated circuit testing machine |
| WO2021021665A1 (en) * | 2019-07-26 | 2021-02-04 | Fluid Power AI Inc. | System and method for evaluating hydraulic system events and executing responses |
| EP4127640A1 (en) * | 2020-03-27 | 2023-02-08 | MPSquared, LLC | Systems, methods, and media for generating alerts of water hammer events in steam pipes |
| US11725970B2 (en) * | 2020-11-03 | 2023-08-15 | Romet Limited | Fluid metering/monitoring system using vibration |
| IT202100031265A1 (it) * | 2021-12-14 | 2023-06-14 | One Off Solution S R L | Sistema diagnostico per valvola elettro-attuata e relativo metodo |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0511553A1 (en) * | 1991-04-29 | 1992-11-04 | Rockwell International Corporation | Calibration system |
| CN2165575Y (zh) * | 1993-04-29 | 1994-05-18 | 大庆石油管理局供电公司 | 监测载波机的采集变送器 |
| US5965819A (en) * | 1998-07-06 | 1999-10-12 | Csi Technology | Parallel processing in a vibration analyzer |
| US6041287A (en) * | 1996-11-07 | 2000-03-21 | Reliance Electric Industrial Company | System architecture for on-line machine diagnostics |
| US6289735B1 (en) * | 1998-09-29 | 2001-09-18 | Reliance Electric Technologies, Llc | Machine diagnostic system and method for vibration analysis |
Family Cites Families (616)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6014A (en) * | 1849-01-09 | Stop-motion for drawing-frames | ||
| US2533339A (en) | 1946-06-22 | 1950-12-12 | Jabez Burns & Sons Inc | Flammable vapor protection |
| US3012432A (en) | 1957-09-23 | 1961-12-12 | Richard H Moore | Leak tester |
| NL272090A (zh) | 1960-12-02 | |||
| US3096434A (en) | 1961-11-28 | 1963-07-02 | Daniel Orifice Fitting Company | Multiple integration flow computer |
| GB1023042A (en) | 1962-05-07 | 1966-03-16 | Wayne Kerr Lab Ltd | Improvements in or relating to pressure responsive apparatus |
| US3232712A (en) * | 1962-08-16 | 1966-02-01 | Continental Lab Inc | Gas detector and analyzer |
| US3374112A (en) * | 1964-03-05 | 1968-03-19 | Yeda Res & Dev | Method and apparatus for controlled deposition of a thin conductive layer |
| US3249833A (en) | 1964-11-16 | 1966-05-03 | Robert E Vosteen | Capacitor transducer |
| US3410779A (en) | 1965-04-01 | 1968-11-12 | Honeywell Inc | Measuring apparatus with pressure amplifier |
| US3404264A (en) | 1965-07-19 | 1968-10-01 | American Meter Co | Telemetering system for determining rate of flow |
| US3468164A (en) | 1966-08-26 | 1969-09-23 | Westinghouse Electric Corp | Open thermocouple detection apparatus |
| GB1224904A (en) | 1968-08-09 | 1971-03-10 | John Stewart Simpson Stewart | Improvements in and relating to electromedical apparatus |
| US3590370A (en) | 1969-04-09 | 1971-06-29 | Leeds & Northrup Co | Method and apparatus for detecting the open-circuit condition of a thermocouple by sending a pulse through the thermocouple and a reactive element in series |
| US3557621A (en) * | 1969-07-07 | 1971-01-26 | C G S Scient Corp Inc | Variable capacitance detecting devices |
| US3701280A (en) | 1970-03-18 | 1972-10-31 | Daniel Ind Inc | Method and apparatus for determining the supercompressibility factor of natural gas |
| GB1354025A (en) | 1970-05-25 | 1974-06-05 | Medicor Muevek | Capacitive pressure transducer |
| US3633053A (en) * | 1970-06-18 | 1972-01-04 | Systron Donner Corp | Vibration transducer |
| US4083031A (en) | 1970-07-23 | 1978-04-04 | The United States Of America As Represented By The Secretary Of The Navy | Acoustic presence detection method and apparatus |
| US3691842A (en) | 1970-09-08 | 1972-09-19 | Beckman Instruments Inc | Differential pressure transducer |
| US3688190A (en) | 1970-09-25 | 1972-08-29 | Beckman Instruments Inc | Differential capacitance circuitry for differential pressure measuring instruments |
| US3924219A (en) | 1971-12-22 | 1975-12-02 | Minnesota Mining & Mfg | Gas detection device |
| CA999950A (en) | 1972-04-24 | 1976-11-16 | Donald B. Brewster | Bleach plant control method |
| US3808480A (en) | 1973-04-16 | 1974-04-30 | Bunker Ramo | Capacitive pressure transducer |
| US3849637A (en) | 1973-05-22 | 1974-11-19 | Combustion Eng | Reactor megawatt demand setter |
| US3855858A (en) | 1973-08-01 | 1974-12-24 | V Cushing | Self synchronous noise rejection circuit for fluid velocity meter |
| US3924069A (en) | 1973-08-15 | 1975-12-02 | Us Navy | Helium speech decoder |
| USRE29383E (en) | 1974-01-10 | 1977-09-06 | Process Systems, Inc. | Digital fluid flow rate measurement or control system |
| US3948098A (en) | 1974-04-24 | 1976-04-06 | The Foxboro Company | Vortex flow meter transmitter including piezo-electric sensor |
| US3952759A (en) | 1974-08-14 | 1976-04-27 | M & J Valve Company | Liquid line break control system and method |
| DE2460066C3 (de) | 1974-12-19 | 1981-08-06 | Brown, Boveri & Cie Ag, 6800 Mannheim | Verfahren und Vorrichtung zum selbsttätigen Regeln des Brenstoff-Luftverhältnisses einer Verbrennung |
| US3973184A (en) | 1975-01-27 | 1976-08-03 | Leeds & Northrup Company | Thermocouple circuit detector for simultaneous analog trend recording and analog to digital conversion |
| GB1534280A (en) | 1975-02-28 | 1978-11-29 | Solartron Electronic Group | Method and apparatus for testing thermocouples |
| JPS5631573Y2 (zh) | 1975-03-12 | 1981-07-28 | ||
| US3964296A (en) | 1975-06-03 | 1976-06-22 | Terrance Matzuk | Integrated ultrasonic scanning apparatus |
| US4008619A (en) * | 1975-11-17 | 1977-02-22 | Mks Instruments, Inc. | Vacuum monitoring |
| US4058975A (en) | 1975-12-08 | 1977-11-22 | General Electric Company | Gas turbine temperature sensor validation apparatus and method |
| US4177496A (en) | 1976-03-12 | 1979-12-04 | Kavlico Corporation | Capacitive pressure transducer |
| US4099413A (en) | 1976-06-25 | 1978-07-11 | Yokogawa Electric Works, Ltd. | Thermal noise thermometer |
| US4102199A (en) | 1976-08-26 | 1978-07-25 | Megasystems, Inc. | RTD measurement system |
| US4043008A (en) | 1976-09-08 | 1977-08-23 | Allied Chemical Corporation | Noise reduction system |
| US4158217A (en) | 1976-12-02 | 1979-06-12 | Kaylico Corporation | Capacitive pressure transducer with improved electrode |
| US4168518A (en) | 1977-05-10 | 1979-09-18 | Lee Shih Y | Capacitor transducer |
| US4122719A (en) | 1977-07-08 | 1978-10-31 | Environmental Systems Corporation | System for accurate measurement of temperature |
| CH622346A5 (zh) | 1977-09-29 | 1981-03-31 | Kistler Instrumente Ag | |
| JPS54111050A (en) | 1978-02-21 | 1979-08-31 | Toyota Motor Corp | Automatic speed changer |
| US4255964A (en) * | 1978-11-30 | 1981-03-17 | The Garrett Corporation | Fluid monitor |
| US4250490A (en) * | 1979-01-19 | 1981-02-10 | Rosemount Inc. | Two wire transmitter for converting a varying signal from a remote reactance sensor to a DC current signal |
| US4237454A (en) | 1979-01-29 | 1980-12-02 | General Electric Company | System for monitoring bearings and other rotating equipment |
| JPS6230915Y2 (zh) | 1979-03-08 | 1987-08-08 | ||
| US4249164A (en) * | 1979-05-14 | 1981-02-03 | Tivy Vincent V | Flow meter |
| US4227419A (en) | 1979-09-04 | 1980-10-14 | Kavlico Corporation | Capacitive pressure transducer |
| US4355536A (en) | 1979-10-02 | 1982-10-26 | Westinghouse Electric Corp. | Sludge measuring apparatus and ultrasonic probe assembly therefor |
| US4322775A (en) * | 1979-10-29 | 1982-03-30 | Delatorre Leroy C | Capacitive pressure sensor |
| US4434451A (en) * | 1979-10-29 | 1984-02-28 | Delatorre Leroy C | Pressure sensors |
| US4279013A (en) | 1979-10-31 | 1981-07-14 | The Valeron Corporation | Machine process controller |
| SU901676A1 (ru) | 1980-01-03 | 1982-01-30 | Ухтинский индустриальный институт | Способ технического диагностировани упругих трубопроводов и устройство дл его осуществлени |
| GB2067756B (en) | 1980-01-15 | 1983-11-16 | Marconi Co Ltd | Liquid level measurement |
| US4287553A (en) | 1980-06-06 | 1981-09-01 | The Bendix Corporation | Capacitive pressure transducer |
| US4337516A (en) | 1980-06-26 | 1982-06-29 | United Technologies Corporation | Sensor fault detection by activity monitoring |
| US4336567A (en) | 1980-06-30 | 1982-06-22 | The Bendix Corporation | Differential pressure transducer |
| FR2486654A1 (fr) * | 1980-07-08 | 1982-01-15 | Cgr | Dispositif d'activation d'un appareil de mesure d'emission acoustique par detection du bruit de fond |
| US4370890A (en) * | 1980-10-06 | 1983-02-01 | Rosemount Inc. | Capacitive pressure transducer with isolated sensing diaphragm |
| US4390321A (en) | 1980-10-14 | 1983-06-28 | American Davidson, Inc. | Control apparatus and method for an oil-well pump assembly |
| US4358814A (en) | 1980-10-27 | 1982-11-09 | Setra Systems, Inc. | Capacitive pressure sensor |
| US4393711A (en) | 1980-11-13 | 1983-07-19 | Electric Power Research Institute, Inc. | Apparatus and method for ultrasonic detection of flaws in power plant piping systems |
| JPS60507Y2 (ja) | 1980-12-02 | 1985-01-09 | トヨタ自動車株式会社 | デイスクブレ−キ用摩擦パツド |
| DE3213866A1 (de) | 1980-12-18 | 1983-10-27 | Siemens AG, 1000 Berlin und 8000 München | Verfahren und schaltungsanordnung zur bestimmung des wertes des ohmschen widerstandes eines messobjekts |
| US4422335A (en) | 1981-03-25 | 1983-12-27 | The Bendix Corporation | Pressure transducer |
| US4458537A (en) | 1981-05-11 | 1984-07-10 | Combustion Engineering, Inc. | High accuracy differential pressure capacitive transducer |
| US4446741A (en) | 1981-06-01 | 1984-05-08 | Prvni Brnenska Strojirna, Narodni Podnik | Vibration transducer |
| US4417312A (en) | 1981-06-08 | 1983-11-22 | Worcester Controls Corporation | Electronic controller for valve actuators |
| JPS57196619U (zh) | 1981-06-11 | 1982-12-13 | ||
| US4389895A (en) | 1981-07-27 | 1983-06-28 | Rosemount Inc. | Capacitance pressure sensor |
| US4459858A (en) | 1981-09-18 | 1984-07-17 | Marsh-Mcbirney, Inc. | Flow meter having an electromagnetic sensor probe |
| US4399824A (en) | 1981-10-05 | 1983-08-23 | Air-Shields, Inc. | Apparatus for detecting probe dislodgement |
| US4448062A (en) | 1981-10-22 | 1984-05-15 | Conoco Inc. | Method and apparatus for erosion detection and location in hydrocarbon production systems and the like |
| US4463612A (en) | 1981-12-10 | 1984-08-07 | The Babcock & Wilcox Company | Electronic circuit using digital techniques for vortex shedding flowmeter signal processing |
| US4455874A (en) | 1981-12-28 | 1984-06-26 | Paroscientific, Inc. | Digital pressure transducer |
| JPS58129316U (ja) | 1982-02-24 | 1983-09-01 | 古田 雅夫 | ボルト頭部の押え板 |
| US4422125A (en) | 1982-05-21 | 1983-12-20 | The Bendix Corporation | Pressure transducer with an invariable reference capacitor |
| US4536753A (en) | 1982-08-02 | 1985-08-20 | Del Norte Technology, Inc. | Self monitoring intruder detecting system of noise-cancelling vibration detectors |
| US4571689A (en) * | 1982-10-20 | 1986-02-18 | The United States Of America As Represented By The Secretary Of The Air Force | Multiple thermocouple testing device |
| JPS59116811U (ja) | 1983-01-28 | 1984-08-07 | 株式会社日立製作所 | 厚み測定装置 |
| EP0122622B1 (en) | 1983-04-13 | 1987-07-08 | Omron Tateisi Electronics Co. | Electronic thermometer |
| JPS59163520U (ja) | 1983-04-19 | 1984-11-01 | トヨタ自動車株式会社 | 自動車のドア構造 |
| US4668473A (en) | 1983-04-25 | 1987-05-26 | The Babcock & Wilcox Company | Control system for ethylene polymerization reactor |
| JPS59176643U (ja) | 1983-05-09 | 1984-11-26 | 吉田 忠男 | クリ−ン・ル−ム |
| JPS59211896A (ja) | 1983-05-17 | 1984-11-30 | 三菱重工業株式会社 | 検出器応答異常診断装置 |
| JPS59211196A (ja) | 1983-05-17 | 1984-11-29 | 三菱重工業株式会社 | 検出器応答異常診断装置 |
| US4530234A (en) | 1983-06-30 | 1985-07-23 | Mobil Oil Corporation | Method and system for measuring properties of fluids |
| JPH0619666B2 (ja) * | 1983-06-30 | 1994-03-16 | 富士通株式会社 | 故障診断処理方式 |
| US4540468A (en) | 1983-09-26 | 1985-09-10 | Board Of Trustees Of The University Of Maine | Method for determining the degree of completion and pulp yield |
| US4707796A (en) | 1983-10-19 | 1987-11-17 | Calabro Salvatore R | Reliability and maintainability indicator |
| JPS6076619U (ja) | 1983-10-31 | 1985-05-29 | 株式会社押上紙器印刷 | 組立紙容器 |
| US4686638A (en) | 1983-11-04 | 1987-08-11 | Kabushiki Kaisha Kosumo Keiki | Leakage inspection method with object type compensation |
| DE3340834A1 (de) | 1983-11-11 | 1985-05-23 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung zur konstanthaltung der temperaturabhaengigen empfindlichkeit eines differenzdruckmessgeraetes |
| US4490773A (en) | 1983-12-19 | 1984-12-25 | United Technologies Corporation | Capacitive pressure transducer |
| US4705212A (en) | 1983-12-27 | 1987-11-10 | Engineering Measurements Co. | Method and apparatus for managing steam systems |
| JPS60131495U (ja) | 1984-02-14 | 1985-09-03 | 日立造船株式会社 | 張出軸受の海水潤滑装置 |
| EP0158192B1 (de) * | 1984-03-31 | 1991-06-05 | B a r m a g AG | Verfahren zur zentralen Erfassung von Messwerten einer Vielzahl von Messstellen |
| JPS60158987U (ja) | 1984-04-02 | 1985-10-22 | スズキ株式会社 | 鞍乗型車両の泥よけ装置 |
| US4542436A (en) | 1984-04-10 | 1985-09-17 | Johnson Service Company | Linearized capacitive pressure transducer |
| US4641529A (en) * | 1984-04-12 | 1987-02-10 | Magnaflux Pipeline Services, Inc. | Pipeline inspection device using ultrasonic apparatus for corrosion pit detection |
| JPS60174915U (ja) | 1984-04-26 | 1985-11-20 | 花井 安五郎 | エアブリ−ザ−の圧力調整装置 |
| US4649515A (en) * | 1984-04-30 | 1987-03-10 | Westinghouse Electric Corp. | Methods and apparatus for system fault diagnosis and control |
| US4517468A (en) | 1984-04-30 | 1985-05-14 | Westinghouse Electric Corp. | Diagnostic system and method |
| US4644479A (en) * | 1984-07-31 | 1987-02-17 | Westinghouse Electric Corp. | Diagnostic apparatus |
| US4642782A (en) * | 1984-07-31 | 1987-02-10 | Westinghouse Electric Corp. | Rule based diagnostic system with dynamic alteration capability |
| US4562742A (en) * | 1984-08-07 | 1986-01-07 | Bell Microcomponents, Inc. | Capacitive pressure transducer |
| US4630265A (en) | 1984-09-26 | 1986-12-16 | General Electric Company | Method and apparatus for selecting for use between data buses in a redundant bus communication system |
| DE3503597C1 (de) | 1985-02-02 | 1986-07-10 | Carl Schenck Ag, 6100 Darmstadt | Servo-Beschleunigungsaufnehmer für tiefe Frequenzen |
| JPH0734162B2 (ja) | 1985-02-06 | 1995-04-12 | 株式会社日立製作所 | 類推制御方法 |
| US4758308A (en) | 1985-03-05 | 1988-07-19 | Carr Wayne F | System for monitoring contaminants with a detector in a paper pulp stream |
| JPH025105Y2 (zh) | 1985-05-21 | 1990-02-07 | ||
| US4670733A (en) | 1985-07-01 | 1987-06-02 | Bell Microsensors, Inc. | Differential pressure transducer |
| US4895031A (en) * | 1985-08-29 | 1990-01-23 | Micro Motion Inc. | Sensor mounting for coriolis mass flow rate meter |
| JPS6250901U (zh) | 1985-09-19 | 1987-03-30 | ||
| JPS6280535U (zh) | 1985-11-06 | 1987-05-22 | ||
| US5179540A (en) | 1985-11-08 | 1993-01-12 | Harris Corporation | Programmable chip enable logic function |
| DE3540204C1 (de) | 1985-11-13 | 1986-09-25 | Daimler-Benz Ag, 7000 Stuttgart | Vorrichtung in einem Kraftfahrzeug zur Anzeige der Aussentemperatur |
| US4807151A (en) * | 1986-04-11 | 1989-02-21 | Purdue Research Foundation | Electrical technique for correcting bridge type mass air flow rate sensor errors resulting from ambient temperature variations |
| GB8611360D0 (en) | 1986-05-09 | 1986-06-18 | Eaton Williams Raymond H | Air condition monitor unit |
| US4696191A (en) | 1986-06-24 | 1987-09-29 | The United States Of America As Represented By The United States Department Of Energy | Apparatus and method for void/particulate detection |
| JPS6340825A (ja) | 1986-08-07 | 1988-02-22 | Terumo Corp | 電子体温計 |
| US4736367A (en) | 1986-12-22 | 1988-04-05 | Chrysler Motors Corporation | Smart control and sensor devices single wire bus multiplex system |
| US5005142A (en) | 1987-01-30 | 1991-04-02 | Westinghouse Electric Corp. | Smart sensor system for diagnostic monitoring |
| US4736763A (en) | 1987-02-26 | 1988-04-12 | Britton George L | Automatic device for the detection and shutoff of unwanted liquid flow in pipes |
| DE3708204C1 (de) | 1987-03-13 | 1988-06-23 | Kulzer & Co Gmbh | Behandlungskammer zum Photopolymerisieren von Dental-Kunststoffen |
| DE3877873D1 (de) * | 1987-04-02 | 1993-03-11 | Eftag Entstaubung Foerdertech | Schaltungsanordnung zur auswertung der von einem halbleitergassensor erzeugten signale. |
| US4860232A (en) | 1987-04-22 | 1989-08-22 | Massachusetts Institute Of Technology | Digital technique for precise measurement of variable capacitance |
| JPS63169532U (zh) | 1987-04-24 | 1988-11-04 | ||
| US4785669A (en) | 1987-05-18 | 1988-11-22 | Mks Instruments, Inc. | Absolute capacitance manometers |
| US4833922A (en) | 1987-06-01 | 1989-05-30 | Rosemount Inc. | Modular transmitter |
| US5122794A (en) | 1987-08-11 | 1992-06-16 | Rosemount Inc. | Dual master implied token communication system |
| US4988990A (en) * | 1989-05-09 | 1991-01-29 | Rosemount Inc. | Dual master implied token communication system |
| US4873655A (en) | 1987-08-21 | 1989-10-10 | Board Of Regents, The University Of Texas System | Sensor conditioning method and apparatus |
| US4875369A (en) | 1987-09-08 | 1989-10-24 | Panex Corporation | Pressure sensor system |
| JPS6472699A (en) | 1987-09-12 | 1989-03-17 | Sony Corp | Speaker diaphragm and its manufacture |
| AU618769B2 (en) | 1987-09-30 | 1992-01-09 | E.I. Du Pont De Nemours And Company | Expert system with process control |
| US4907167A (en) * | 1987-09-30 | 1990-03-06 | E. I. Du Pont De Nemours And Company | Process control system with action logging |
| US4831564A (en) | 1987-10-22 | 1989-05-16 | Suga Test Instruments Co., Ltd. | Apparatus for estimating and displaying remainder of lifetime of xenon lamps |
| US4818994A (en) | 1987-10-22 | 1989-04-04 | Rosemount Inc. | Transmitter with internal serial bus |
| US4979125A (en) | 1987-11-20 | 1990-12-18 | Southwest Research Institute | Non-destructive evaluation of ropes by using transverse impulse vibrational wave method |
| US5274572A (en) | 1987-12-02 | 1993-12-28 | Schlumberger Technology Corporation | Method and apparatus for knowledge-based signal monitoring and analysis |
| US4866628A (en) | 1987-12-18 | 1989-09-12 | International Business Machines Corp. | Automated production dispatch system with feedback control |
| US5488697A (en) * | 1988-01-12 | 1996-01-30 | Honeywell Inc. | Problem state monitoring system |
| US5193143A (en) * | 1988-01-12 | 1993-03-09 | Honeywell Inc. | Problem state monitoring |
| US4841286A (en) | 1988-02-08 | 1989-06-20 | Honeywell Inc. | Apparatus and method for detection of an open thermocouple in a process control network |
| US4924418A (en) | 1988-02-10 | 1990-05-08 | Dickey-John Corporation | Universal monitor |
| JPH0763586B2 (ja) | 1988-03-04 | 1995-07-12 | 川崎製鉄株式会社 | コークス炉ガス脱硫液の再生における廃空気の処理方法 |
| JPH0774961B2 (ja) | 1988-04-07 | 1995-08-09 | 株式会社日立製作所 | オートチユーニングｐｉｄ調節計 |
| US4878012A (en) | 1988-06-10 | 1989-10-31 | Rosemount Inc. | Charge balanced feedback transmitter |
| US5014543A (en) | 1988-07-14 | 1991-05-14 | Fe Petro Inc | Leak detector |
| US4926364A (en) | 1988-07-25 | 1990-05-15 | Westinghouse Electric Corp. | Method and apparatus for determining weighted average of process variable |
| US4964125A (en) | 1988-08-19 | 1990-10-16 | Hughes Aircraft Company | Method and apparatus for diagnosing faults |
| US5197328A (en) * | 1988-08-25 | 1993-03-30 | Fisher Controls International, Inc. | Diagnostic apparatus and method for fluid control valves |
| US4977480A (en) | 1988-09-14 | 1990-12-11 | Fuji Koki Mfg. Co., Ltd. | Variable-capacitance type sensor and variable-capacitance type sensor system using the same |
| US5099436A (en) * | 1988-11-03 | 1992-03-24 | Allied-Signal Inc. | Methods and apparatus for performing system fault diagnosis |
| US4926674A (en) | 1988-11-03 | 1990-05-22 | Innovex Inc. | Self-zeroing pressure signal generator |
| US5067099A (en) | 1988-11-03 | 1991-11-19 | Allied-Signal Inc. | Methods and apparatus for monitoring system performance |
| EP0369489A3 (en) | 1988-11-18 | 1991-11-27 | Omron Corporation | Sensor controller system |
| US5025344A (en) | 1988-11-30 | 1991-06-18 | Carnegie Mellon University | Built-in current testing of integrated circuits |
| US5015949A (en) | 1988-12-22 | 1991-05-14 | Westinghouse Electric Corp. | Steam turbine blade arrival time processor with automatic gain control |
| US4951174A (en) | 1988-12-30 | 1990-08-21 | United Technologies Corporation | Capacitive pressure sensor with third encircling plate |
| JP2714091B2 (ja) | 1989-01-09 | 1998-02-16 | 株式会社日立製作所 | フィールド計器 |
| NL8900050A (nl) | 1989-01-10 | 1990-08-01 | Philips Nv | Inrichting voor het meten van een ruststroom van een geintegreerde monolitische digitale schakeling, geintegreerde monolitische digitale schakeling voorzien van een dergelijke inrichting en testapparaat voorzien van een dergelijke inrichting. |
| US5098197A (en) * | 1989-01-30 | 1992-03-24 | The United States Of America As Represented By The United States Department Of Energy | Optical Johnson noise thermometry |
| US5089979A (en) * | 1989-02-08 | 1992-02-18 | Basic Measuring Instruments | Apparatus for digital calibration of detachable transducers |
| US5081598A (en) * | 1989-02-21 | 1992-01-14 | Westinghouse Electric Corp. | Method for associating text in automatic diagnostic system to produce recommended actions automatically |
| US4939753A (en) | 1989-02-24 | 1990-07-03 | Rosemount Inc. | Time synchronization of control networks |
| DE4008560C2 (de) | 1989-03-17 | 1995-11-02 | Hitachi Ltd | Verfahren und Vorrichtung zum Bestimmen einer Restlebensdauer eines Aggregats |
| JPH0692914B2 (ja) | 1989-04-14 | 1994-11-16 | 株式会社日立製作所 | 機器／設備の状態診断システム |
| US5089984A (en) * | 1989-05-15 | 1992-02-18 | Allen-Bradley Company, Inc. | Adaptive alarm controller changes multiple inputs to industrial controller in order for state word to conform with stored state word |
| US5051743A (en) | 1989-05-31 | 1991-09-24 | Ball Corporation | High precision, high frequency current sensing and analog signal decoding network |
| US4934196A (en) | 1989-06-02 | 1990-06-19 | Micro Motion, Inc. | Coriolis mass flow rate meter having a substantially increased noise immunity |
| US5351199A (en) | 1989-06-26 | 1994-09-27 | Brun Corporation | Programmable water treatment controller for progressive flow systems |
| JPH0650557B2 (ja) | 1989-07-04 | 1994-06-29 | 株式会社日立製作所 | フィールド計器の通信方式 |
| US5269311A (en) | 1989-08-29 | 1993-12-14 | Abbott Laboratories | Method for compensating errors in a pressure transducer |
| US5293585A (en) * | 1989-08-31 | 1994-03-08 | Kabushiki Kaisha Toshiba | Industrial expert system |
| JP2712625B2 (ja) | 1989-09-19 | 1998-02-16 | 横河電機株式会社 | 信号伝送器 |
| US5189624A (en) * | 1989-09-29 | 1993-02-23 | General Electric Company | Intelligent machining workstation operating logic |
| AU638507B2 (en) | 1989-10-02 | 1993-07-01 | Rosemount Inc. | Field-mounted control unit |
| JP2656637B2 (ja) | 1989-11-22 | 1997-09-24 | 株式会社日立製作所 | プロセス制御システム及び発電プラントプロセス制御システム |
| JPH03166601A (ja) | 1989-11-27 | 1991-07-18 | Hitachi Ltd | 制御支援装置 |
| US5019760A (en) | 1989-12-07 | 1991-05-28 | Electric Power Research Institute | Thermal life indicator |
| CA2031765C (en) | 1989-12-08 | 1996-02-20 | Masahide Nomura | Method and system for performing control conforming with characteristics of controlled system |
| US5633809A (en) | 1989-12-22 | 1997-05-27 | American Sigma, Inc. | Multi-function flow monitoring apparatus with area velocity sensor capability |
| US5111531A (en) | 1990-01-08 | 1992-05-05 | Automation Technology, Inc. | Process control using neural network |
| JP2753592B2 (ja) | 1990-01-18 | 1998-05-20 | 横河電機株式会社 | ２線式計器 |
| JP2712701B2 (ja) | 1990-02-02 | 1998-02-16 | 横河電機株式会社 | 圧力伝送器 |
| US5235527A (en) | 1990-02-09 | 1993-08-10 | Toyota Jidosha Kabushiki Kaisha | Method for diagnosing abnormality of sensor |
| US5134574A (en) | 1990-02-27 | 1992-07-28 | The Foxboro Company | Performance control apparatus and method in a processing plant |
| US5122976A (en) | 1990-03-12 | 1992-06-16 | Westinghouse Electric Corp. | Method and apparatus for remotely controlling sensor processing algorithms to expert sensor diagnoses |
| JPH03118424U (zh) | 1990-03-20 | 1991-12-06 | ||
| US5267241A (en) | 1990-04-04 | 1993-11-30 | Avasem Corporation | Error correction code dynamic range control system |
| US5053815A (en) | 1990-04-09 | 1991-10-01 | Eastman Kodak Company | Reproduction apparatus having real time statistical process control |
| US5047990A (en) | 1990-06-01 | 1991-09-10 | The United States Of America As Represented By The Secretary Of The Navy | Underwater acoustic data acquisition system |
| EP0460892B1 (en) | 1990-06-04 | 1996-09-04 | Hitachi, Ltd. | A control device for controlling a controlled apparatus, and a control method therefor |
| US5216612A (en) | 1990-07-16 | 1993-06-01 | R. J. Reynolds Tobacco Company | Intelligent computer integrated maintenance system and method |
| US5150289A (en) | 1990-07-30 | 1992-09-22 | The Foxboro Company | Method and apparatus for process control |
| US5212765A (en) | 1990-08-03 | 1993-05-18 | E. I. Du Pont De Nemours & Co., Inc. | On-line training neural network system for process control |
| US5167009A (en) | 1990-08-03 | 1992-11-24 | E. I. Du Pont De Nemours & Co. (Inc.) | On-line process control neural network using data pointers |
| US5197114A (en) * | 1990-08-03 | 1993-03-23 | E. I. Du Pont De Nemours & Co., Inc. | Computer neural network regulatory process control system and method |
| US5282261A (en) * | 1990-08-03 | 1994-01-25 | E. I. Du Pont De Nemours And Co., Inc. | Neural network process measurement and control |
| US5121467A (en) | 1990-08-03 | 1992-06-09 | E.I. Du Pont De Nemours & Co., Inc. | Neural network/expert system process control system and method |
| US5224203A (en) | 1990-08-03 | 1993-06-29 | E. I. Du Pont De Nemours & Co., Inc. | On-line process control neural network using data pointers |
| US5142612A (en) | 1990-08-03 | 1992-08-25 | E. I. Du Pont De Nemours & Co. (Inc.) | Computer neural network supervisory process control system and method |
| US5194819A (en) * | 1990-08-10 | 1993-03-16 | Setra Systems, Inc. | Linearized capacitance sensor system |
| US5175678A (en) | 1990-08-15 | 1992-12-29 | Elsag International B.V. | Method and procedure for neural control of dynamic processes |
| US5340271A (en) | 1990-08-18 | 1994-08-23 | Rolls-Royce Plc | Flow control method and means |
| US5130936A (en) | 1990-09-14 | 1992-07-14 | Arinc Research Corporation | Method and apparatus for diagnostic testing including a neural network for determining testing sufficiency |
| DE69128996T2 (de) | 1990-10-10 | 1998-09-10 | Honeywell Inc | Identifizierung eines Prozesssystems |
| US5367612A (en) | 1990-10-30 | 1994-11-22 | Science Applications International Corporation | Neurocontrolled adaptive process control system |
| JP3189326B2 (ja) | 1990-11-21 | 2001-07-16 | セイコーエプソン株式会社 | 生産管理装置および該装置を用いた生産管理方法 |
| US5227929A (en) | 1990-11-26 | 1993-07-13 | International Business Machines Corporation | Portable computer hard disk protective reflex system |
| US5265031A (en) | 1990-11-26 | 1993-11-23 | Praxair Technology, Inc. | Diagnostic gas monitoring process utilizing an expert system |
| US5094109A (en) * | 1990-12-06 | 1992-03-10 | Rosemount Inc. | Pressure transmitter with stress isolation depression |
| DE4040190C2 (de) | 1990-12-15 | 1994-08-04 | Kernforschungsz Karlsruhe | Verfahren zur Laufzeitmessung von Ultraschall bei der Impuls-Reflexionsmethode |
| JP3128832B2 (ja) | 1991-01-23 | 2001-01-29 | 株式会社日立製作所 | プラント診断装置及びプラント診断方法 |
| US5214582C1 (en) | 1991-01-30 | 2001-06-26 | Edge Diagnostic Systems | Interactive diagnostic system for an automobile vehicle and method |
| US5143452A (en) | 1991-02-04 | 1992-09-01 | Rockwell International Corporation | System for interfacing a single sensor unit with multiple data processing modules |
| AU660661B2 (en) * | 1991-02-05 | 1995-07-06 | Storage Technology Corporation | Knowledge based machine initiated maintenance system |
| JP2636527B2 (ja) | 1991-03-04 | 1997-07-30 | 三菱電機株式会社 | 電気機器収納装置の絶縁劣化防止及び絶縁劣化予測診断装置 |
| JPH07112299B2 (ja) | 1991-03-07 | 1995-11-29 | 横河電機株式会社 | プロセス信号受信装置 |
| US5137370A (en) | 1991-03-25 | 1992-08-11 | Delta M Corporation | Thermoresistive sensor system |
| US5357449A (en) | 1991-04-26 | 1994-10-18 | Texas Instruments Incorporated | Combining estimates using fuzzy sets |
| AU1893392A (en) | 1991-05-03 | 1992-12-21 | Storage Technology Corporation | Knowledge based resource management |
| US5114664A (en) | 1991-05-06 | 1992-05-19 | General Electric Company | Method for in situ evaluation of capacitive type pressure transducers in a nuclear power plant |
| US5195098A (en) * | 1991-05-10 | 1993-03-16 | Echelon Corporation | Binary data error correction using hint signal |
| US5671335A (en) | 1991-05-23 | 1997-09-23 | Allen-Bradley Company, Inc. | Process optimization using a neural network |
| US5317520A (en) | 1991-07-01 | 1994-05-31 | Moore Industries International Inc. | Computerized remote resistance measurement system with fault detection |
| US5168419A (en) | 1991-07-16 | 1992-12-01 | Panex Corporation | Capacitor and pressure transducer |
| DE4124662A1 (de) | 1991-07-25 | 1993-01-28 | Fibronix Sensoren Gmbh | Relativdrucksensor |
| US5230250A (en) | 1991-09-03 | 1993-07-27 | Delatorre Leroy C | Capacitor and pressure transducer |
| JPH0560596A (ja) | 1991-09-04 | 1993-03-09 | Hitachi Ltd | 回転機器異常診断装置 |
| JP3182807B2 (ja) | 1991-09-20 | 2001-07-03 | 株式会社日立製作所 | 多機能流体計測伝送装置及びそれを用いた流体量計測制御システム |
| US5365787A (en) | 1991-10-02 | 1994-11-22 | Monitoring Technology Corp. | Noninvasive method and apparatus for determining resonance information for rotating machinery components and for anticipating component failure from changes therein |
| US5414645A (en) | 1991-10-25 | 1995-05-09 | Mazda Motor Corporation | Method of fault diagnosis in an apparatus having sensors |
| US5327357A (en) | 1991-12-03 | 1994-07-05 | Praxair Technology, Inc. | Method of decarburizing molten metal in the refining of steel using neural networks |
| WO1993012410A1 (en) * | 1991-12-13 | 1993-06-24 | Honeywell Inc. | Piezoresistive silicon pressure sensor design |
| US5365423A (en) | 1992-01-08 | 1994-11-15 | Rockwell International Corporation | Control system for distributed sensors and actuators |
| US5282131A (en) * | 1992-01-21 | 1994-01-25 | Brown And Root Industrial Services, Inc. | Control system for controlling a pulp washing system using a neural network controller |
| US5349541A (en) | 1992-01-23 | 1994-09-20 | Electric Power Research Institute, Inc. | Method and apparatus utilizing neural networks to predict a specified signal value within a multi-element system |
| JPH05249136A (ja) | 1992-03-09 | 1993-09-28 | Takata Kk | 加速度センサ |
| EP0565761B1 (en) | 1992-04-15 | 1997-07-09 | Mita Industrial Co. Ltd. | An image forming apparatus provided with self-diagnosis system |
| GB9208704D0 (en) | 1992-04-22 | 1992-06-10 | Foxboro Ltd | Improvements in and relating to sensor units |
| JP2783059B2 (ja) * | 1992-04-23 | 1998-08-06 | 株式会社日立製作所 | プロセス状態検出装置、及び半導体センサおよびその状態表示装置 |
| US5233875A (en) | 1992-05-04 | 1993-08-10 | Kavlico Corporation | Stable capacitive pressure transducer system |
| ES2046114B1 (es) | 1992-05-08 | 1995-08-01 | Iberditan Sa | Sistema de control automatico de compactacion en prensas. |
| US5329818A (en) | 1992-05-28 | 1994-07-19 | Rosemount Inc. | Correction of a pressure indication in a pressure transducer due to variations of an environmental condition |
| JP3100757B2 (ja) | 1992-06-02 | 2000-10-23 | 三菱電機株式会社 | 監視診断装置 |
| FR2692037B1 (fr) | 1992-06-03 | 1997-08-08 | Thomson Csf | Procede de diagnostic d'un processus evolutif. |
| GB2267783B (en) | 1992-06-09 | 1996-08-28 | British Aerospace | Beam forming |
| US5492016A (en) | 1992-06-15 | 1996-02-20 | Industrial Sensors, Inc. | Capacitive melt pressure measurement with center-mounted electrode post |
| CA2097558C (en) * | 1992-06-16 | 2001-08-21 | William B. Kilgore | Directly connected display of process control system in an open systems windows environment |
| JPH0695882B2 (ja) | 1992-07-06 | 1994-11-30 | ふみ子 斉藤 | 発酵茶飲料 |
| DE59302704D1 (de) | 1992-08-22 | 1996-06-27 | Claas Ohg | Vorrichtung zur messung eines massestromes |
| US5384699A (en) * | 1992-08-24 | 1995-01-24 | Associated Universities, Inc. | Preventive maintenance system for the photomultiplier detector blocks of pet scanners |
| US5477444A (en) | 1992-09-14 | 1995-12-19 | Bhat; Naveen V. | Control system using an adaptive neural network for target and path optimization for a multivariable, nonlinear process |
| US5347843A (en) | 1992-09-23 | 1994-09-20 | Korr Medical Technologies Inc. | Differential pressure flowmeter with enhanced signal processing for respiratory flow measurement |
| US5644240A (en) | 1992-09-30 | 1997-07-01 | Cobe Laboratories, Inc. | Differential conductivity hemodynamic monitor |
| JPH06214969A (ja) | 1992-09-30 | 1994-08-05 | Internatl Business Mach Corp <Ibm> | 情報通信方法および装置 |
| US5469070A (en) | 1992-10-16 | 1995-11-21 | Rosemount Analytical Inc. | Circuit for measuring source resistance of a sensor |
| US5228780A (en) | 1992-10-30 | 1993-07-20 | Martin Marietta Energy Systems, Inc. | Dual-mode self-validating resistance/Johnson noise thermometer system |
| US5388465A (en) * | 1992-11-17 | 1995-02-14 | Yamatake-Honeywell Co., Ltd. | Electromagnetic flowmeter |
| AT399235B (de) | 1992-12-24 | 1995-04-25 | Vaillant Gmbh | Verfahren zur funktionskontrolle eines temperaturfühlers |
| FR2700003B1 (fr) | 1992-12-28 | 1995-02-10 | Commissariat Energie Atomique | Procédé de fabrication d'un capteur de pression utilisant la technologie silicium sur isolant et capteur obtenu. |
| US5486996A (en) * | 1993-01-22 | 1996-01-23 | Honeywell Inc. | Parameterized neurocontrollers |
| JP3170381B2 (ja) | 1993-02-12 | 2001-05-28 | オムロン株式会社 | 電池の寿命判定装置 |
| US5392293A (en) * | 1993-02-26 | 1995-02-21 | At&T Corp. | Built-in current sensor for IDDQ testing |
| JPH06248224A (ja) | 1993-02-27 | 1994-09-06 | Toagosei Chem Ind Co Ltd | フッ素樹脂塗料組成物 |
| US5790413A (en) | 1993-03-22 | 1998-08-04 | Exxon Chemical Patents Inc. | Plant parameter detection by monitoring of power spectral densities |
| US5394341A (en) * | 1993-03-25 | 1995-02-28 | Ford Motor Company | Apparatus for detecting the failure of a sensor |
| US5774378A (en) | 1993-04-21 | 1998-06-30 | The Foxboro Company | Self-validating sensors |
| CA2161655A1 (en) | 1993-04-30 | 1994-11-10 | James David Keeler | Method and apparatus for determining the sensitivity of inputs to a neural network on output parameters |
| FR2705155A1 (fr) | 1993-05-12 | 1994-11-18 | Philips Laboratoire Electroniq | Dispositif et méthode pour générer une fonction d'approximation. |
| US5410495A (en) | 1993-07-20 | 1995-04-25 | Texas Instruments Incorporated | Apparatus, systems, and methods for diagnosing anomalous mass flow controller operation |
| US5361628A (en) | 1993-08-02 | 1994-11-08 | Ford Motor Company | System and method for processing test measurements collected from an internal combustion engine for diagnostic purposes |
| US5539638A (en) | 1993-08-05 | 1996-07-23 | Pavilion Technologies, Inc. | Virtual emissions monitor for automobile |
| JP2546159B2 (ja) | 1993-08-05 | 1996-10-23 | 日本電気株式会社 | 生産管理システム |
| US5386373A (en) * | 1993-08-05 | 1995-01-31 | Pavilion Technologies, Inc. | Virtual continuous emission monitoring system with sensor validation |
| US5549137A (en) | 1993-08-25 | 1996-08-27 | Rosemount Inc. | Valve positioner with pressure feedback, dynamic correction and diagnostics |
| US5404064A (en) | 1993-09-02 | 1995-04-04 | The United States Of America As Represented By The Secretary Of The Navy | Low-frequency electrostrictive ceramic plate voltage sensor |
| SG44494A1 (en) * | 1993-09-07 | 1997-12-19 | R0Semount Inc | Multivariable transmitter |
| US5481200A (en) * | 1993-09-15 | 1996-01-02 | Rosemont Inc. | Field transmitter built-in test equipment |
| US5489831A (en) * | 1993-09-16 | 1996-02-06 | Honeywell Inc. | Pulse width modulating motor controller |
| US5481199A (en) * | 1993-09-24 | 1996-01-02 | Anderson; Karl F. | System for improving measurement accuracy of transducer by measuring transducer temperature and resistance change using thermoelectric voltages |
| US5408406A (en) | 1993-10-07 | 1995-04-18 | Honeywell Inc. | Neural net based disturbance predictor for model predictive control |
| US5442639A (en) | 1993-10-12 | 1995-08-15 | Ship Star Associates, Inc. | Method and apparatus for monitoring a communications network |
| US5537335A (en) | 1993-11-01 | 1996-07-16 | University Of Pittsburgh Of The Commonwealth System Of Higher Education | Fluid delivery apparatus and associated method |
| US5610324A (en) | 1993-11-08 | 1997-03-11 | Fugitive Emissions Detection Devices, Inc. | Fugitive emissions indicating device |
| CH687047A5 (de) | 1993-11-30 | 1996-08-30 | Hler Ag B | Verfahren zur Regelung einer Arbeitsmaschine |
| US5444820A (en) | 1993-12-09 | 1995-08-22 | Long Island Lighting Company | Adaptive system and method for predicting response times in a service environment |
| JP2893233B2 (ja) | 1993-12-09 | 1999-05-17 | 株式会社ユニシアジェックス | 筒内圧センサの診断装置 |
| US5526293A (en) | 1993-12-17 | 1996-06-11 | Texas Instruments Inc. | System and method for controlling semiconductor wafer processing |
| US5764539A (en) | 1994-01-21 | 1998-06-09 | Novartis Nutrition Ag | Non-invasive system and method for a fluid flow monitoring system |
| US5542300A (en) | 1994-01-24 | 1996-08-06 | Setra Systems, Inc. | Low cost, center-mounted capacitive pressure sensor |
| US5642301A (en) | 1994-01-25 | 1997-06-24 | Rosemount Inc. | Transmitter with improved compensation |
| JPH07225530A (ja) | 1994-02-15 | 1995-08-22 | Canon Inc | 画像記録用熱定着器の診断装置および画像記録装置 |
| US5440478A (en) | 1994-02-22 | 1995-08-08 | Mercer Forge Company | Process control method for improving manufacturing operations |
| JPH07234988A (ja) | 1994-02-23 | 1995-09-05 | Mitsubishi Heavy Ind Ltd | 異常診断装置 |
| JP3637061B2 (ja) | 1994-02-23 | 2005-04-06 | ローズマウント インコーポレイテッド | 情報格納のための現場送信機 |
| US5434774A (en) | 1994-03-02 | 1995-07-18 | Fisher Controls International, Inc. | Interface apparatus for two-wire communication in process control loops |
| US5436705A (en) | 1994-04-18 | 1995-07-25 | Xerox Corporation | Adaptive process controller for electrophotographic printing |
| JP3139597B2 (ja) | 1994-04-27 | 2001-03-05 | 横河電機株式会社 | 圧力測定装置における導圧管の詰まり診断装置 |
| RU2080647C1 (ru) | 1994-05-17 | 1997-05-27 | Игорь Иванович Грициненко | Способ автоматического функционального диагностирования периодически управляемого технологического оборудования |
| US5528516A (en) | 1994-05-25 | 1996-06-18 | System Management Arts, Inc. | Apparatus and method for event correlation and problem reporting |
| FR2720498B1 (fr) * | 1994-05-27 | 1996-08-09 | Schlumberger Services Petrol | Débitmètre multiphasique. |
| US5629870A (en) | 1994-05-31 | 1997-05-13 | Siemens Energy & Automation, Inc. | Method and apparatus for predicting electric induction machine failure during operation |
| US5756898A (en) | 1994-06-27 | 1998-05-26 | Texaco Inc. | Passive acoustic method of measuring the effective internal diameter of a pipe containing flowing fluids |
| US5471884A (en) | 1994-07-05 | 1995-12-05 | Motorola, Inc. | Gain-adjusting circuitry for combining two sensors to form a media isolated differential pressure sensor |
| US5483387A (en) * | 1994-07-22 | 1996-01-09 | Honeywell, Inc. | High pass optical filter |
| JPH0854923A (ja) | 1994-08-10 | 1996-02-27 | Idemitsu Material Kk | プロセスデータ診断方法および診断装置 |
| US5533383A (en) | 1994-08-18 | 1996-07-09 | General Electric Company | Integrated acoustic leak detection processing system |
| US5608650A (en) | 1994-08-19 | 1997-03-04 | Spectrel Partners, L.L.C. | Systems and methods for testing pump flow rates |
| US5623605A (en) | 1994-08-29 | 1997-04-22 | Lucent Technologies Inc. | Methods and systems for interprocess communication and inter-network data transfer |
| US5669713A (en) | 1994-09-27 | 1997-09-23 | Rosemount Inc. | Calibration of process control temperature transmitter |
| JPH08102241A (ja) | 1994-09-30 | 1996-04-16 | Toshiba Corp | 負荷制御装置 |
| WO1996011389A1 (en) | 1994-10-08 | 1996-04-18 | Honeywell S.A. | Transmitter sensor |
| JPH08114638A (ja) | 1994-10-14 | 1996-05-07 | Meidensha Corp | 機器異常診断装置 |
| BR9509503A (pt) | 1994-10-24 | 1997-12-30 | Fisher Rosemount Systems Inc | Sistema de controle distribuido dispositivo de campo baseado em rede módulo de campo ponte destinada a transmitir informações a partir de uma rede de distribuição para uma rede de controle ponte/conversor |
| DE59407059D1 (de) * | 1994-10-25 | 1998-11-12 | Rieter Ingolstadt Spinnerei | Backplane-Steuerung für Spinnereimaschine |
| US5704011A (en) | 1994-11-01 | 1997-12-30 | The Foxboro Company | Method and apparatus for providing multivariable nonlinear control |
| JP3129121B2 (ja) | 1994-11-10 | 2001-01-29 | 横河電機株式会社 | 管路閉塞検出装置 |
| US5551306A (en) | 1994-12-06 | 1996-09-03 | Hersey Measurement Company | Magnetic flowmeter |
| JP2682478B2 (ja) | 1994-12-12 | 1997-11-26 | 日本電気株式会社 | チップ状固体電解コンデンサ及びその製造方法 |
| JPH08166309A (ja) | 1994-12-13 | 1996-06-25 | Yokogawa Electric Corp | 導圧管の詰まり診断機構付き差圧測定装置 |
| EP0749057B1 (en) | 1994-12-28 | 2003-12-03 | Omron Corporation | Method and system for inference using hierarchy model, and method and system for control |
| US5570034A (en) | 1994-12-29 | 1996-10-29 | Intel Corporation | Using hall effect to monitor current during IDDQ testing of CMOS integrated circuits |
| US5600148A (en) * | 1994-12-30 | 1997-02-04 | Honeywell Inc. | Low power infrared scene projector array and method of manufacture |
| US5572438A (en) | 1995-01-05 | 1996-11-05 | Teco Energy Management Services | Engery management and building automation system |
| DE19502499A1 (de) | 1995-01-27 | 1996-08-01 | Pepperl & Fuchs | Bussystem zur Steuerung und Aktivierung von miteinander vernetzten ASI-Slaves, vorzugsweise binäre Sensoren oder Eingangsmodule und/oder Ausgangsmodule oder Aktuatoren eines Aktuator-Sensor-Interface |
| RU2116627C1 (ru) * | 1995-02-06 | 1998-07-27 | Алексей Алексеевич Сиволапов | Устройство датчика расхода жидкости и газа |
| US5887657A (en) | 1995-02-09 | 1999-03-30 | Baker Hughes Incorporated | Pressure test method for permanent downhole wells and apparatus therefore |
| US5731522A (en) * | 1997-03-14 | 1998-03-24 | Rosemount Inc. | Transmitter with isolation assembly for pressure sensor |
| US5637802A (en) | 1995-02-28 | 1997-06-10 | Rosemount Inc. | Capacitive pressure sensor for a pressure transmitted where electric field emanates substantially from back sides of plates |
| US5672247A (en) | 1995-03-03 | 1997-09-30 | Union Camp Patent Holding, Inc. | Control scheme for rapid pulp delignification and bleaching |
| JP3746089B2 (ja) | 1995-03-14 | 2006-02-15 | 松下冷機株式会社 | 圧縮機の性能劣化診断装置 |
| US5708585A (en) * | 1995-03-20 | 1998-01-13 | General Motors Corporation | Combustible gas measurement |
| US6151560A (en) | 1995-03-27 | 2000-11-21 | Jones; Thaddeus M. | Open circuit failure monitoring apparatus for controlled electrical resistance heaters |
| US5572420A (en) | 1995-04-03 | 1996-11-05 | Honeywell Inc. | Method of optimal controller design for multivariable predictive control utilizing range control |
| US5650943A (en) | 1995-04-10 | 1997-07-22 | Leak Detection Services, Inc. | Apparatus and method for testing for valve leaks by differential signature method |
| JPH08313466A (ja) | 1995-05-17 | 1996-11-29 | Chino Corp | 熱電対劣化検知装置 |
| SE510296C2 (sv) | 1995-05-22 | 1999-05-10 | Jerker Delsing | Sätt och anordningar vid mätning av flöde |
| GB2301901B (en) | 1995-06-05 | 1999-04-07 | Nippon Denso Co | Apparatus and method for diagnosing degradation or malfunction of oxygen sensor |
| US5741074A (en) | 1995-06-06 | 1998-04-21 | Thermo Electrioc Corporation | Linear integrated sensing transmitter sensor |
| WO1996039617A1 (en) | 1995-06-06 | 1996-12-12 | Rosemount Inc. | Open sensor diagnostic system for temperature transmitter in a process control system |
| US5650777A (en) | 1995-06-07 | 1997-07-22 | Rosemount Inc. | Conversion circuit for process control system |
| US5561599A (en) | 1995-06-14 | 1996-10-01 | Honeywell Inc. | Method of incorporating independent feedforward control in a multivariable predictive controller |
| JPH095092A (ja) | 1995-06-16 | 1997-01-10 | Maspro Denkoh Corp | 移動体位置検出装置 |
| US5578763A (en) | 1995-06-22 | 1996-11-26 | The Trustees Of Columbia University In The City Of New York | Electromagnetic flow meter |
| US5742845A (en) | 1995-06-22 | 1998-04-21 | Datascape, Inc. | System for extending present open network communication protocols to communicate with non-standard I/O devices directly coupled to an open network |
| US5555190A (en) | 1995-07-12 | 1996-09-10 | Micro Motion, Inc. | Method and apparatus for adaptive line enhancement in Coriolis mass flow meter measurement |
| US5736649A (en) | 1995-08-23 | 1998-04-07 | Tokico Ltd. | Vortex flowmeter |
| US5940013A (en) | 1995-08-28 | 1999-08-17 | Anita Trotter-Cox | Method and system for intelligence support and information presentation to aircraft crew and air traffic controllers on in-flight emergency situations |
| SE509206C2 (sv) | 1995-08-30 | 1998-12-14 | Roland Larsson | Vibrationsdetektor |
| US5705978A (en) * | 1995-09-29 | 1998-01-06 | Rosemount Inc. | Process control transmitter |
| DK0770858T3 (da) * | 1995-10-26 | 2000-05-08 | Flowtec Ag | Coriolis-massegennemstrømningsdetektor med et enkelt målerør |
| JP3263296B2 (ja) | 1995-10-26 | 2002-03-04 | 株式会社東芝 | 電磁流量計 |
| DE19648048C2 (de) | 1995-11-21 | 2001-11-29 | Fuji Electric Co Ltd | Detektorvorrichtung zur Druckmessung basierend auf gemessenen Kapazitätswerten |
| US5956484A (en) | 1995-12-13 | 1999-09-21 | Immersion Corporation | Method and apparatus for providing force feedback over a computer network |
| WO1997021157A1 (en) | 1995-12-06 | 1997-06-12 | Honeywell Inc. | A method of predictive maintenance of a process control system haivng fluid movement |
| US5940290A (en) | 1995-12-06 | 1999-08-17 | Honeywell Inc. | Method of predictive maintenance of a process control system having fluid movement |
| CA2165400C (en) | 1995-12-15 | 1999-04-20 | Jean Serodes | Method of predicting residual chlorine in water supply systems |
| FR2742861B1 (fr) | 1995-12-22 | 1998-03-13 | Naphtachimie Sa | Procede et dispositif de mesure de vibrations |
| US6014902A (en) * | 1995-12-28 | 2000-01-18 | The Foxboro Company | Magnetic flowmeter with diagnostics |
| US5700090A (en) | 1996-01-03 | 1997-12-23 | Rosemount Inc. | Temperature sensor transmitter with sensor sheath lead |
| US5746511A (en) | 1996-01-03 | 1998-05-05 | Rosemount Inc. | Temperature transmitter with on-line calibration using johnson noise |
| US5817950A (en) | 1996-01-04 | 1998-10-06 | Rosemount Inc. | Flow measurement compensation technique for use with an averaging pitot tube type primary element |
| EP0875023B1 (de) | 1996-01-17 | 1999-09-08 | Siemens Aktiengesellschaft | Automatisierungsgerät |
| DE29600609U1 (de) | 1996-01-17 | 1997-02-13 | Siemens Ag | Automatisierungsgerät |
| US5801689A (en) | 1996-01-22 | 1998-09-01 | Extended Systems, Inc. | Hypertext based remote graphic user interface control system |
| US5757608A (en) | 1996-01-25 | 1998-05-26 | Alliedsignal Inc. | Compensated pressure transducer |
| US6094600A (en) | 1996-02-06 | 2000-07-25 | Fisher-Rosemount Systems, Inc. | System and method for managing a transaction database of records of changes to field device configurations |
| US6209048B1 (en) | 1996-02-09 | 2001-03-27 | Ricoh Company, Ltd. | Peripheral with integrated HTTP server for remote access using URL's |
| US5764891A (en) | 1996-02-15 | 1998-06-09 | Rosemount Inc. | Process I/O to fieldbus interface circuit |
| US5665899A (en) | 1996-02-23 | 1997-09-09 | Rosemount Inc. | Pressure sensor diagnostics in a process transmitter |
| US6330005B1 (en) | 1996-02-23 | 2001-12-11 | Visionael Corporation | Communication protocol binding in a computer system for designing networks |
| US5754451A (en) | 1996-02-29 | 1998-05-19 | Raytheon Company | Preventative maintenance and diagonstic system |
| US8290721B2 (en) | 1996-03-28 | 2012-10-16 | Rosemount Inc. | Flow measurement diagnostics |
| US6654697B1 (en) | 1996-03-28 | 2003-11-25 | Rosemount Inc. | Flow measurement with diagnostics |
| US7254518B2 (en) | 1996-03-28 | 2007-08-07 | Rosemount Inc. | Pressure transmitter with diagnostics |
| US6907383B2 (en) | 1996-03-28 | 2005-06-14 | Rosemount Inc. | Flow diagnostic system |
| US7085610B2 (en) | 1996-03-28 | 2006-08-01 | Fisher-Rosemount Systems, Inc. | Root cause diagnostics |
| US6539267B1 (en) | 1996-03-28 | 2003-03-25 | Rosemount Inc. | Device in a process system for determining statistical parameter |
| US6017143A (en) | 1996-03-28 | 2000-01-25 | Rosemount Inc. | Device in a process system for detecting events |
| US7630861B2 (en) * | 1996-03-28 | 2009-12-08 | Rosemount Inc. | Dedicated process diagnostic device |
| US5909368A (en) * | 1996-04-12 | 1999-06-01 | Fisher-Rosemount Systems, Inc. | Process control system using a process control strategy distributed among multiple control elements |
| IE76714B1 (en) | 1996-04-19 | 1997-10-22 | Auro Environmental Ltd | Apparatus for measuring the velocity of a fluid flowing in a conduit |
| US5710370A (en) * | 1996-05-17 | 1998-01-20 | Dieterich Technology Holding Corp. | Method for calibrating a differential pressure fluid flow measuring system |
| US5752008A (en) | 1996-05-28 | 1998-05-12 | Fisher-Rosemount Systems, Inc. | Real-time process control simulation method and apparatus |
| US5708211A (en) * | 1996-05-28 | 1998-01-13 | Ohio University | Flow regime determination and flow measurement in multiphase flow pipelines |
| US5805442A (en) | 1996-05-30 | 1998-09-08 | Control Technology Corporation | Distributed interface architecture for programmable industrial control systems |
| US5728947A (en) | 1996-06-12 | 1998-03-17 | Asahi/America, Inc. | Ultrasonic vortex flowmeter having clamp-on housing |
| US5668322A (en) | 1996-06-13 | 1997-09-16 | Rosemount Inc. | Apparatus for coupling a transmitter to process fluid having a sensor extension selectively positionable at a plurality of angles |
| DE19624929C2 (de) | 1996-06-21 | 2001-08-02 | Siemens Ag | Prozeßautomatisierungssystem |
| US5680109A (en) | 1996-06-21 | 1997-10-21 | The Foxboro Company | Impulse line blockage detector systems and methods |
| US5781024A (en) | 1996-07-26 | 1998-07-14 | Diametrics Medical, Inc. | Instrument performance verification system |
| RU2121105C1 (ru) | 1996-08-07 | 1998-10-27 | Научно-исследовательский институт измерительных систем | Способ определения дефектов стенки нефтяных и газовых трубопроводов и целостности внешней изоляции |
| EP0825506B1 (en) | 1996-08-20 | 2013-03-06 | Invensys Systems, Inc. | Methods and apparatus for remote process control |
| US5713668A (en) * | 1996-08-23 | 1998-02-03 | Accutru International Corporation | Self-verifying temperature sensor |
| US5854994A (en) * | 1996-08-23 | 1998-12-29 | Csi Technology, Inc. | Vibration monitor and transmission system |
| DE19634997C2 (de) * | 1996-08-30 | 1999-08-05 | Voith Sulzer Papiermasch Gmbh | Regeleinrichtung mit einer Sensoren-Mehrzahl |
| US6023399A (en) * | 1996-09-24 | 2000-02-08 | Hitachi, Ltd. | Decentralized control system and shutdown control apparatus |
| US5857777A (en) | 1996-09-25 | 1999-01-12 | Claud S. Gordon Company | Smart temperature sensing device |
| US5936514A (en) | 1996-09-27 | 1999-08-10 | Rosemount Inc. | Power supply input circuit for field instrument |
| US6047222A (en) | 1996-10-04 | 2000-04-04 | Fisher Controls International, Inc. | Process control network with redundant field devices and buses |
| US6006338A (en) | 1996-10-04 | 1999-12-21 | Rosemont Inc. | Process transmitter communication circuit |
| US5970430A (en) * | 1996-10-04 | 1999-10-19 | Fisher Controls International, Inc. | Local device and process diagnostics in a process control network having distributed control functions |
| DE19640937B4 (de) | 1996-10-04 | 2013-11-28 | Robert Bosch Gmbh | Vorrichtung zur Überwachung der Meßwerterfassung bei einer Motorsteuerung |
| BR9711589A (pt) | 1996-10-04 | 1999-08-24 | Fisher Controls Int | Dispositivo de interface de manutan-Æo parqa uso em um sistema de controle de processo |
| DE69710201T3 (de) * | 1996-10-04 | 2007-07-05 | Fisher Controls International Llc (N.D.Ges.D.Staates Delaware) | Netzwerkzugangs-interface für prozesssteuerungsnetzwerk |
| US5734975A (en) | 1996-10-24 | 1998-03-31 | Motorola, Inc. | Direct-coupled signaling receiver with PL/DPL detector |
| US5956487A (en) | 1996-10-25 | 1999-09-21 | Hewlett-Packard Company | Embedding web access mechanism in an appliance for user interface functions including a web server and web browser |
| US5859964A (en) * | 1996-10-25 | 1999-01-12 | Advanced Micro Devices, Inc. | System and method for performing real time data acquisition, process modeling and fault detection of wafer fabrication processes |
| US5828567A (en) | 1996-11-07 | 1998-10-27 | Rosemount Inc. | Diagnostics for resistance based transmitter |
| US6434504B1 (en) | 1996-11-07 | 2002-08-13 | Rosemount Inc. | Resistance based process control device diagnostics |
| US6601005B1 (en) * | 1996-11-07 | 2003-07-29 | Rosemount Inc. | Process device diagnostics using process variable sensor signal |
| US6519546B1 (en) | 1996-11-07 | 2003-02-11 | Rosemount Inc. | Auto correcting temperature transmitter with resistance based sensor |
| US5956663A (en) | 1996-11-07 | 1999-09-21 | Rosemount, Inc. | Signal processing technique which separates signal components in a sensor for sensor diagnostics |
| US6449574B1 (en) | 1996-11-07 | 2002-09-10 | Micro Motion, Inc. | Resistance based process control device diagnostics |
| US6754601B1 (en) | 1996-11-07 | 2004-06-22 | Rosemount Inc. | Diagnostics for resistive elements of process devices |
| US5719378A (en) * | 1996-11-19 | 1998-02-17 | Illinois Tool Works, Inc. | Self-calibrating temperature controller |
| US5869772A (en) * | 1996-11-27 | 1999-02-09 | Storer; William James A. | Vortex flowmeter including cantilevered vortex and vibration sensing beams |
| IT1286007B1 (it) | 1996-11-28 | 1998-06-26 | Sgs Thomson Microelectronics | Misuratore di flusso di un fluido |
| US5854993A (en) | 1996-12-10 | 1998-12-29 | Caterpillar Inc. | Component machine testing using neural network processed vibration data analysis |
| JPH10187224A (ja) | 1996-12-25 | 1998-07-14 | Smc Corp | 自動コントロールシステム |
| DE69714606T9 (de) | 1996-12-31 | 2004-09-09 | Rosemount Inc., Eden Prairie | Vorrichtung zur überprüfung eines von einer anlage kommenden steuersignals in einer prozesssteuerung |
| JPH10198657A (ja) | 1997-01-08 | 1998-07-31 | Toshiba Corp | 信号処理装置 |
| DE19703359A1 (de) | 1997-01-30 | 1998-08-06 | Telefunken Microelectron | Verfahren zur Temperaturkompensation bei Meßsystemen |
| JPH10232170A (ja) | 1997-02-20 | 1998-09-02 | Chino Corp | 熱電対劣化予測装置 |
| WO1998039718A1 (en) | 1997-03-04 | 1998-09-11 | Emerson Electric Co. | Distributed diagnostic system |
| JPH10261185A (ja) | 1997-03-19 | 1998-09-29 | Hitachi Ltd | 入出力混在形信号変換器 |
| US6059254A (en) | 1997-03-27 | 2000-05-09 | Rosemount Inc. | Process instrument mount |
| US6002952A (en) | 1997-04-14 | 1999-12-14 | Masimo Corporation | Signal processing apparatus and method |
| GB2324606B (en) | 1997-04-25 | 2002-01-16 | Kent Meters Ltd | Electromagnetic flowmeter |
| US5848383A (en) | 1997-05-06 | 1998-12-08 | Integrated Sensor Solutions | System and method for precision compensation for the nonlinear offset and sensitivity variation of a sensor with temperature |
| US5874676A (en) * | 1997-05-12 | 1999-02-23 | Maki, Jr.; Voldi E. | Method and apparatus for acoustically investigating a casing with a swept frequency pulse |
| DE19724167C2 (de) | 1997-06-07 | 1999-07-15 | Deutsch Zentr Luft & Raumfahrt | Verfahren und Vorrichtung zum Ermitteln eines Meßwerts einer Zielmeßgröße einer Mehr-Phasen-Strömung |
| NL1006366C2 (nl) | 1997-06-20 | 1998-12-22 | Meco Equip Eng | Werkwijze en inrichting voor het hechten van soldeerballen aan een substraat. |
| US5911162A (en) | 1997-06-20 | 1999-06-08 | Mks Instruments, Inc. | Capacitive pressure transducer with improved electrode support |
| US5923557A (en) | 1997-08-01 | 1999-07-13 | Hewlett-Packard Company | Method and apparatus for providing a standard interface to process control devices that are adapted to differing field-bus protocols |
| US5995910A (en) * | 1997-08-29 | 1999-11-30 | Reliance Electric Industrial Company | Method and system for synthesizing vibration data |
| US6282454B1 (en) | 1997-09-10 | 2001-08-28 | Schneider Automation Inc. | Web interface to a programmable controller |
| JP3326714B2 (ja) | 1997-09-10 | 2002-09-24 | 株式会社山武 | 電磁流量計 |
| DE19742716C5 (de) * | 1997-09-26 | 2005-12-01 | Phoenix Contact Gmbh & Co. Kg | Steuer- und Datenübertragungsanlage und Verfahren zum Übertragen von sicherheitsbezogenen Daten |
| US6014612A (en) * | 1997-10-02 | 2000-01-11 | Fisher Controls International, Inc. | Remote diagnostics in a process control network having distributed control functions |
| DE69818494T2 (de) | 1997-10-13 | 2004-07-01 | Rosemount Inc., Eden Prairie | Übertragungsmethode für Feldvorrichtungen in industriellen Prozessen |
| JPH11118657A (ja) * | 1997-10-21 | 1999-04-30 | Cosmo Keiki:Kk | ドリフト補正値算出装置及びこの算出装置を具備した洩れ検査装置 |
| US6311136B1 (en) | 1997-11-26 | 2001-10-30 | Invensys Systems, Inc. | Digital flowmeter |
| US7124646B2 (en) | 1997-11-26 | 2006-10-24 | Invensys Systems, Inc. | Correcting for two-phase flow in a digital flowmeter |
| US6104875A (en) | 1997-12-18 | 2000-08-15 | Honeywell Inc. | Method for field programming an industrial process transmitter |
| US6260004B1 (en) * | 1997-12-31 | 2001-07-10 | Innovation Management Group, Inc. | Method and apparatus for diagnosing a pump system |
| US6112131A (en) | 1998-02-06 | 2000-08-29 | Zellweger Uster, Inc. | Gin process control |
| US5900801A (en) | 1998-02-27 | 1999-05-04 | Food Safety Solutions Corp. | Integral master system for monitoring food service requirements for compliance at a plurality of food service establishments |
| US6199018B1 (en) | 1998-03-04 | 2001-03-06 | Emerson Electric Co. | Distributed diagnostic system |
| US6016523A (en) * | 1998-03-09 | 2000-01-18 | Schneider Automation, Inc. | I/O modular terminal having a plurality of data registers and an identification register and providing for interfacing between field devices and a field master |
| US6139180A (en) | 1998-03-27 | 2000-10-31 | Vesuvius Crucible Company | Method and system for testing the accuracy of a thermocouple probe used to measure the temperature of molten steel |
| EP1071934B1 (de) | 1998-04-09 | 2002-02-13 | Plöchinger, Heinz | Kapazitive druck- oder kraftsensorstruktur und verfahren zur herstellung derselben |
| US6283138B1 (en) | 1998-04-24 | 2001-09-04 | Anderson, Greenwood Lp | Pressure relief valve monitoring device |
| US6072150A (en) | 1998-05-27 | 2000-06-06 | Beamworks Ltd. | Apparatus and method for in-line soldering |
| FI114745B (fi) | 1998-06-01 | 2004-12-15 | Metso Automation Oy | Kenttälaitteiden hallintajärjestelmä |
| FI108678B (fi) | 1998-06-17 | 2002-02-28 | Neles Controls Oy | Kenttälaitteiden hallintajärjestelmä |
| US6615091B1 (en) * | 1998-06-26 | 2003-09-02 | Eveready Battery Company, Inc. | Control system and method therefor |
| EP1097427A1 (en) | 1998-07-17 | 2001-05-09 | Starkey International | Facility management system |
| US6360277B1 (en) | 1998-07-22 | 2002-03-19 | Crydom Corporation | Addressable intelligent relay |
| US6272438B1 (en) | 1998-08-05 | 2001-08-07 | Micro Motion, Inc. | Vibrating conduit parameter sensors, methods and computer program products for generating residual-flexibility-compensated mass flow estimates |
| US6046642A (en) | 1998-09-08 | 2000-04-04 | Motorola, Inc. | Amplifier with active bias compensation and method for adjusting quiescent current |
| US6738388B1 (en) | 1998-09-10 | 2004-05-18 | Fisher-Rosemount Systems, Inc. | Shadow function block interface for use in a process control network |
| US6757665B1 (en) * | 1999-09-28 | 2004-06-29 | Rockwell Automation Technologies, Inc. | Detection of pump cavitation/blockage and seal failure via current signature analysis |
| US6327914B1 (en) | 1998-09-30 | 2001-12-11 | Micro Motion, Inc. | Correction of coriolis flowmeter measurements due to multiphase flows |
| FR2784193B1 (fr) | 1998-10-05 | 2001-01-05 | Texas Instruments France | Mecanisme integre permettant une detection de defaillances par test automatique en temps reel pour un convertisseur analogique/numerique |
| US6236096B1 (en) | 1998-10-06 | 2001-05-22 | National Science Council Of Republic Of China | Structure of a three-electrode capacitive pressure sensor |
| GB9821972D0 (en) | 1998-10-08 | 1998-12-02 | Abb Kent Taylor Ltd | Flowmeter logging |
| DE19851636A1 (de) | 1998-11-10 | 2000-05-11 | Asea Brown Boveri | Dämpfungsvorrichtung zur Reduzierung der Schwingungsamplitude akustischer Wellen für einen Brenner |
| US6611775B1 (en) | 1998-12-10 | 2003-08-26 | Rosemount Inc. | Electrode leakage diagnostics in a magnetic flow meter |
| US6615149B1 (en) | 1998-12-10 | 2003-09-02 | Rosemount Inc. | Spectral diagnostics in a magnetic flow meter |
| IT1304079B1 (it) | 1998-12-31 | 2001-03-07 | Abb Research Ltd | Dispositivo di collaudo per sistemi di controllo industriali |
| DE19905071A1 (de) | 1999-02-08 | 2000-08-10 | Siemens Ag | Meßumformer sowie Verfahren zur Diagnose der Versorgung eines Meßumformers |
| US6806847B2 (en) | 1999-02-12 | 2004-10-19 | Fisher-Rosemount Systems Inc. | Portable computer in a process control environment |
| US8044793B2 (en) | 2001-03-01 | 2011-10-25 | Fisher-Rosemount Systems, Inc. | Integrated device alerts in a process control system |
| US7206646B2 (en) | 1999-02-22 | 2007-04-17 | Fisher-Rosemount Systems, Inc. | Method and apparatus for performing a function in a plant using process performance monitoring with process equipment monitoring and control |
| US6633782B1 (en) | 1999-02-22 | 2003-10-14 | Fisher-Rosemount Systems, Inc. | Diagnostic expert in a process control system |
| US6298454B1 (en) | 1999-02-22 | 2001-10-02 | Fisher-Rosemount Systems, Inc. | Diagnostics in a process control system |
| JP4948707B2 (ja) | 1999-02-25 | 2012-06-06 | ローズマウント インコーポレイテッド | 診断型流量測定 |
| DE10084306B4 (de) | 1999-03-01 | 2006-02-02 | H & B System Co., Ltd. | Ultraschallerfassungsgerät und ein dieses verwendendes Ultraschallerfassungsverfahren |
| US6546814B1 (en) | 1999-03-13 | 2003-04-15 | Textron Systems Corporation | Method and apparatus for estimating torque in rotating machinery |
| US6564268B1 (en) | 1999-03-17 | 2003-05-13 | Rosemount Inc. | Fieldbus message queuing method and apparatus |
| JP2000278132A (ja) | 1999-03-24 | 2000-10-06 | Matsushita Electric Ind Co Ltd | 多信号のクランプ装置 |
| US6304828B1 (en) | 1999-04-02 | 2001-10-16 | The United States Of America As Represented By The Secretary Of The Navy | System and method for calibrating a signal detection threshold circuit |
| US6981176B2 (en) | 1999-05-10 | 2005-12-27 | Delphi Technologies, Inc. | Secured microcontroller architecture |
| US6295875B1 (en) | 1999-05-14 | 2001-10-02 | Rosemount Inc. | Process pressure measurement devices with improved error compensation |
| WO2000070531A2 (en) | 1999-05-17 | 2000-11-23 | The Foxboro Company | Methods and apparatus for control configuration |
| US6298308B1 (en) | 1999-05-20 | 2001-10-02 | Reid Asset Management Company | Diagnostic network with automated proactive local experts |
| DE59904155D1 (de) | 1999-05-29 | 2003-03-06 | Mtl Instr Gmbh | Verfahren und Schaltungsanordnung zur Spannungsversorgung und Funktionsüberwachung zumindest eines Messwertumformers |
| US6356191B1 (en) | 1999-06-17 | 2002-03-12 | Rosemount Inc. | Error compensation for a process fluid temperature transmitter |
| US7010459B2 (en) * | 1999-06-25 | 2006-03-07 | Rosemount Inc. | Process device diagnostics using process variable sensor signal |
| DE60014709T3 (de) | 1999-07-01 | 2010-04-15 | Rosemount Inc., Eden Prairie | Zweidraht-sender mit selbstprüfung und niedriger leistung |
| DE19930660A1 (de) | 1999-07-02 | 2001-01-11 | Siemens Ag | Verfahren zur Überwachung oder zur Installation neuer Programmcodes in einer industriellen Anlage |
| US6915364B1 (en) | 1999-07-02 | 2005-07-05 | Fisher Rosemount Systems, Inc. | Automatically downloaded link active schedule |
| US6367328B1 (en) | 1999-07-12 | 2002-04-09 | Digital Wave Corporation | Noninvasive detection of corrosion, MIC, and foreign objects in fluid-filled containers using leaky guided ultrasonic waves |
| US6785592B1 (en) | 1999-07-16 | 2004-08-31 | Perot Systems Corporation | System and method for energy management |
| US6505517B1 (en) * | 1999-07-23 | 2003-01-14 | Rosemount Inc. | High accuracy signal processing for magnetic flowmeter |
| DE19936858C1 (de) | 1999-08-05 | 2001-05-23 | Siemens Ag | Aktoranordnung, insbesondere zur Ansteuerung eines Einspritzventils einer Brennkraftmaschine |
| US6701274B1 (en) | 1999-08-27 | 2004-03-02 | Rosemount Inc. | Prediction of error magnitude in a pressure transmitter |
| US6618745B2 (en) * | 1999-09-10 | 2003-09-09 | Fisher Rosemount Systems, Inc. | Linking device in a process control system that allows the formation of a control loop having function blocks in a controller and in field devices |
| DE60032929T2 (de) | 1999-09-15 | 2007-10-25 | ResMed Ltd., Bella Vista | Synchronisierung einer beatmungsvorrichtung mittels doppelphasensensoren |
| US6556145B1 (en) | 1999-09-24 | 2003-04-29 | Rosemount Inc. | Two-wire fluid temperature transmitter with thermocouple diagnostics |
| US6425038B1 (en) | 1999-09-28 | 2002-07-23 | Rockwell Automation Technologies, Inc. | Conversion of desk-top operating system for real-time control using installable interrupt service routines |
| DE19947129A1 (de) | 1999-09-30 | 2001-04-05 | Siemens Ag | Diagnosesystem und -verfahren, insbesondere für ein Ventil |
| DE29917651U1 (de) | 1999-10-07 | 2000-11-09 | Siemens Ag | Meßumformer sowie Prozeßleitsystem |
| US6567006B1 (en) | 1999-11-19 | 2003-05-20 | Flow Metrix, Inc. | Monitoring vibrations in a pipeline network |
| EP1109374A3 (de) | 1999-12-13 | 2001-06-27 | TELEFONAKTIEBOLAGET LM ERICSSON (publ) | Verfahren und Vorrichtung zur Durchführung von Netzwerkoperationen |
| US6892317B1 (en) | 1999-12-16 | 2005-05-10 | Xerox Corporation | Systems and methods for failure prediction, diagnosis and remediation using data acquisition and feedback for a distributed electronic system |
| US6561038B2 (en) | 2000-01-06 | 2003-05-13 | Rosemount Inc. | Sensor with fluid isolation barrier |
| US6378364B1 (en) | 2000-01-13 | 2002-04-30 | Halliburton Energy Services, Inc. | Downhole densitometer |
| US6447459B1 (en) | 2000-04-07 | 2002-09-10 | Pds Healthcare Products, Inc. | Device and method for measuring lung performance |
| FI110425B (fi) | 2000-04-12 | 2003-01-31 | Metso Paper Inc | Menetelmä kiinnirullaimen toimintavarmuuden parantamiseksi |
| FI114507B (fi) | 2000-07-07 | 2004-10-29 | Metso Automation Oy | Laitediagnostiikkajärjestelmä |
| DE10033586A1 (de) | 2000-07-11 | 2002-01-24 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Fehlererkennung bzw. Diagnose |
| US6496814B1 (en) | 2000-07-19 | 2002-12-17 | International Business Machines Corporation | Method and system for integrating spatial analysis, and scheduling to efficiently schedule and monitor infrastructure maintenance |
| RU2190267C2 (ru) | 2000-07-19 | 2002-09-27 | Юркевич Геннадий Петрович | Способ управления ядерным реактором |
| DE10036971A1 (de) | 2000-07-28 | 2002-02-28 | Siemens Ag | Verfahren zur Ferndiagnose eines technologischen Prozesses |
| US7023205B1 (en) | 2000-08-01 | 2006-04-04 | General Dynamics Advanced Information Systems, Inc. | Eddy current sensor capable of sensing through a conductive barrier |
| US6751560B1 (en) | 2000-08-01 | 2004-06-15 | The Charles Stark Draper Laboratory, Inc. | Non-invasive pipeline inspection system |
| WO2002018927A1 (fr) | 2000-08-28 | 2002-03-07 | Mitsubishi Denki Kabushiki Kaisha | Dispositif de controle de structure |
| AU2001293056A1 (en) | 2000-09-25 | 2002-04-08 | Motorwiz, Inc. | Model-based machine diagnostics and prognostics using theory of noise and communications |
| US6980959B1 (en) | 2000-10-17 | 2005-12-27 | Accenture Llp | Configuring mechanical equipment |
| US6480793B1 (en) | 2000-10-27 | 2002-11-12 | Westinghouse Electric Company Lcl | Flow condition monitor |
| US6648082B2 (en) | 2000-11-07 | 2003-11-18 | Halliburton Energy Services, Inc. | Differential sensor measurement method and apparatus to detect a drill bit failure and signal surface operator |
| US7113085B2 (en) | 2000-11-07 | 2006-09-26 | Fisher-Rosemount Systems, Inc. | Enhanced device alarms in a process control system |
| US6951133B2 (en) | 2000-11-15 | 2005-10-04 | Passarelli Jr Frank | Electromagnetic acoustic transducer with recessed coils |
| JP3738424B2 (ja) * | 2000-11-17 | 2006-01-25 | 株式会社アミック | パルス電磁力による音響診断・測定装置、及びそれらの診断・測定方法 |
| FI117143B (fi) | 2000-11-30 | 2006-06-30 | Metso Automation Oy | Soodakattilan nuohousmenetelmä ja -laitteisto |
| DE10063982A1 (de) | 2000-12-14 | 2002-07-04 | Ifak Inst Fuer Automation Und | Feldgerät für Automatisierungssysteme |
| US6490927B2 (en) | 2000-12-22 | 2002-12-10 | Honeywell International Inc. | Method for detecting multiple types of corrosion |
| US6493689B2 (en) | 2000-12-29 | 2002-12-10 | General Dynamics Advanced Technology Systems, Inc. | Neural net controller for noise and vibration reduction |
| US6993445B2 (en) * | 2001-01-16 | 2006-01-31 | Invensys Systems, Inc. | Vortex flowmeter |
| US6970003B2 (en) | 2001-03-05 | 2005-11-29 | Rosemount Inc. | Electronics board life prediction of microprocessor-based transmitters |
| US6819292B2 (en) | 2001-03-09 | 2004-11-16 | Arad Measuring Technologies Ltd | Meter register |
| US6735549B2 (en) | 2001-03-28 | 2004-05-11 | Westinghouse Electric Co. Llc | Predictive maintenance display system |
| US6854028B2 (en) * | 2001-03-29 | 2005-02-08 | International Business Machines Corporation | Disk drive control for improving the operation of a computer subjected to motion |
| CN1288520C (zh) | 2001-04-05 | 2006-12-06 | 费希尔控制国际公司 | 在过程控制环境中人工启动紧急关断测试和收集诊断数据的系统 |
| US6912671B2 (en) | 2001-05-07 | 2005-06-28 | Bisher-Rosemount Systems, Inc | Wiring fault detection, diagnosis and reporting for process control systems |
| US6859755B2 (en) * | 2001-05-14 | 2005-02-22 | Rosemount Inc. | Diagnostics for industrial process control and measurement systems |
| US7149597B2 (en) * | 2001-05-29 | 2006-12-12 | John Billings | Process control system and method |
| US6662120B2 (en) | 2001-06-19 | 2003-12-09 | Endress + Hauser Flowtec Ag | Excitation circuits for coriolis mass flowmeters |
| US6772036B2 (en) | 2001-08-30 | 2004-08-03 | Fisher-Rosemount Systems, Inc. | Control system using process model |
| CN1585953A (zh) | 2001-09-13 | 2005-02-23 | Abb股份有限公司 | 计算电力需求的方法和系统 |
| US7168429B2 (en) | 2001-10-12 | 2007-01-30 | Ric Investments, Llc | Auto-titration pressure support system and method of using same |
| CN1257179C (zh) | 2001-10-26 | 2006-05-24 | 香港中文大学 | 一种利用胶带获取人体dna的方法 |
| US20030158803A1 (en) | 2001-12-20 | 2003-08-21 | Darken Christian J. | System and method for estimation of asset lifetimes |
| US7035773B2 (en) | 2002-03-06 | 2006-04-25 | Fisher-Rosemount Systems, Inc. | Appendable system and devices for data acquisition, analysis and control |
| CA2378791A1 (en) | 2002-03-25 | 2003-09-25 | Mcmaster University | Method of detection of flow duct obstruction |
| DE10218830C1 (de) | 2002-04-26 | 2003-12-18 | Siemens Ag | Diagnosesystem und -verfahren für ein Ventil |
| JP2004021712A (ja) | 2002-06-18 | 2004-01-22 | Yokogawa Electric Corp | 設備診断支援システム |
| US6920789B2 (en) | 2002-07-01 | 2005-07-26 | Yokio Sakai | System for watching and forecasting changes in natural phenomena and weather based on sounds from the earth |
| JP2004034112A (ja) | 2002-07-05 | 2004-02-05 | Hitachi Ltd | 圧延設備の診断支援方法および診断支援システム |
| US7109883B2 (en) | 2002-09-06 | 2006-09-19 | Rosemount Inc. | Low power physical layer for a bus in an industrial transmitter |
| US7039476B2 (en) | 2002-09-27 | 2006-05-02 | Siemens Building Technologies, Inc. | Control system with filtered dead zone |
| US7114516B2 (en) | 2002-10-15 | 2006-10-03 | Takasago Engineering Co., Ltd. | Leak-detecting check valve, and leak-detection alarm system that uses said check valve |
| US6957157B2 (en) | 2002-11-12 | 2005-10-18 | Flow Metrix, Inc. | Tracking vibrations in a pipeline network |
| JP2004186445A (ja) | 2002-12-03 | 2004-07-02 | Omron Corp | モデル化装置及びモデル解析方法並びにプロセス異常検出・分類システム及びプロセス異常検出・分類方法並びにモデル化システム及びモデル化方法並びに故障予知システム及びモデル化装置の更新方法 |
| US7040179B2 (en) | 2002-12-06 | 2006-05-09 | Endress+ Hauser Flowtec Ag | Process meter |
| US20040128034A1 (en) | 2002-12-11 | 2004-07-01 | Lenker Jay A. | Method and apparatus for water flow sensing and control |
| US6997642B2 (en) | 2003-02-12 | 2006-02-14 | Subair Systems, Llc | Golf course environmental management system |
| US7110843B2 (en) | 2003-02-24 | 2006-09-19 | Smar Research Corporation | Arrangements and methods for monitoring processes and devices using a web service |
| US7634384B2 (en) | 2003-03-18 | 2009-12-15 | Fisher-Rosemount Systems, Inc. | Asset optimization reporting in a process plant |
| US20040199361A1 (en) | 2003-04-01 | 2004-10-07 | Ching-Shan Lu | Method and apparatus for equipment diagnostics and recovery with self-learning |
| US6904476B2 (en) * | 2003-04-04 | 2005-06-07 | Rosemount Inc. | Transmitter with dual protocol interface |
| EP1646864B1 (en) * | 2003-07-18 | 2018-11-07 | Rosemount Inc. | Process diagnostics |
| JP2005048638A (ja) | 2003-07-31 | 2005-02-24 | Tokyo Electric Power Co Inc:The | 燃焼振動解析方法、燃焼振動解析装置およびこれら解析手法を用いた解析プログラム |
| US7280048B2 (en) | 2003-08-07 | 2007-10-09 | Rosemount Inc. | Process control loop current verification |
| US7018800B2 (en) | 2003-08-07 | 2006-03-28 | Rosemount Inc. | Process device with quiescent current diagnostics |
| US7627441B2 (en) | 2003-09-30 | 2009-12-01 | Rosemount Inc. | Process device with vibration based diagnostics |
| DE10347890A1 (de) | 2003-10-10 | 2005-05-04 | Abb Patent Gmbh | Magnetisch-induktives Messgerät für strömende Stoffe und Verfahren zu dessen Herstellung |
| EP1673722B1 (en) | 2003-10-17 | 2017-08-30 | Hydralift Amclyde, Inc. | Equipment component monitoring and replacement management system |
| US7435581B2 (en) | 2003-11-26 | 2008-10-14 | Broadley-James Corporation | Integrated bio-reactor monitor and control system |
| JP4237610B2 (ja) | 2003-12-19 | 2009-03-11 | 株式会社東芝 | 保守支援方法及びプログラム |
| US7523667B2 (en) * | 2003-12-23 | 2009-04-28 | Rosemount Inc. | Diagnostics of impulse piping in an industrial process |
| RU2339008C2 (ru) | 2004-03-25 | 2008-11-20 | Роузмаунт Инк. | Упрощенное измерение свойства текучей среды |
| US7258021B2 (en) | 2004-06-25 | 2007-08-21 | Rosemount Inc. | Process transmitter isolation assembly |
| US7036381B2 (en) | 2004-06-25 | 2006-05-02 | Rosemount Inc. | High temperature pressure transmitter assembly |
| US7262693B2 (en) | 2004-06-28 | 2007-08-28 | Rosemount Inc. | Process field device with radio frequency communication |
| JP2008511938A (ja) | 2004-08-31 | 2008-04-17 | ワットロー・エレクトリック・マニュファクチャリング・カンパニー | 動作システムの分散された診断システム |
| US7181654B2 (en) | 2004-09-17 | 2007-02-20 | Fisher-Rosemount Systems, Inc. | System and method for detecting an abnormal situation associated with a reactor |
| EP1794687A1 (en) | 2004-09-30 | 2007-06-13 | British Telecommunications Public Limited Company | Information retrieval |
| US8645092B2 (en) | 2004-10-22 | 2014-02-04 | Fisher-Rosemount Systems, Inc. | Quality control system and method for construction, commissioning, and other initiation of a process plant |
| DE602005016310D1 (de) * | 2005-02-15 | 2009-10-08 | Abb Research Ltd | Diagnoseeinrichtung für ein prozesssteuersystem |
| JP5312806B2 (ja) | 2005-02-28 | 2013-10-09 | ローズマウント インコーポレイテッド | プロセスデバイス診断装置および診断方法 |
| US7577543B2 (en) | 2005-03-11 | 2009-08-18 | Honeywell International Inc. | Plugged impulse line detection |
| CN101156119B (zh) | 2005-04-04 | 2011-04-13 | 费希尔-罗斯蒙德系统公司 | 工业过程控制系统中的诊断 |
| US7689455B2 (en) | 2005-04-07 | 2010-03-30 | Olista Ltd. | Analyzing and detecting anomalies in data records using artificial intelligence |
| CN101208589A (zh) | 2005-06-21 | 2008-06-25 | Abb研究有限公司 | 用于过程控制系统的诊断设备 |
| DE102005030612B4 (de) * | 2005-06-30 | 2014-09-11 | Infineon Technologies Ag | Halteeinrichtung für ein Sensorsignal, Verfahren zum Weiterleiten eines Sensorsignals und Computerprogramm |
| JP2007040763A (ja) | 2005-08-01 | 2007-02-15 | Toyota Motor Corp | 加速度センサの補正装置 |
| US20070068225A1 (en) | 2005-09-29 | 2007-03-29 | Brown Gregory C | Leak detector for process valve |
| US8055358B2 (en) | 2005-12-05 | 2011-11-08 | Fisher-Rosemount Systems, Inc. | Multi-objective predictive process optimization with concurrent process simulation |
| SE529699C2 (sv) | 2006-03-01 | 2007-10-30 | Delaval Holding Ab | Mjölkmaskinstestning |
| JP4970820B2 (ja) | 2006-03-27 | 2012-07-11 | 横河電機株式会社 | 導圧管詰まり検出装置及び導圧管詰まり検出方法 |
| US7528737B2 (en) | 2006-04-10 | 2009-05-05 | Rosemount Inc. | Temperature responsive indicators for process control instruments |
| US7913566B2 (en) | 2006-05-23 | 2011-03-29 | Rosemount Inc. | Industrial process device utilizing magnetic induction |
| US7778797B2 (en) | 2006-09-28 | 2010-08-17 | Fisher-Rosemount Systems, Inc. | Method and system for detecting abnormal operation in a stirred vessel |
| US7891354B2 (en) | 2006-09-29 | 2011-02-22 | Nellcor Puritan Bennett Llc | Systems and methods for providing active noise control in a breathing assistance system |
| US7321846B1 (en) * | 2006-10-05 | 2008-01-22 | Rosemount Inc. | Two-wire process control loop diagnostics |
| KR20090123921A (ko) | 2007-02-26 | 2009-12-02 | 퀄컴 인코포레이티드 | 신호 분리를 위한 시스템, 방법 및 장치 |
| US7770459B2 (en) * | 2007-07-20 | 2010-08-10 | Rosemount Inc. | Differential pressure diagnostic for process fluid pulsations |
| US7698077B2 (en) | 2007-11-09 | 2010-04-13 | Applied Micro Circuits Corporation | System and method for signal level detection |
| FR2932625B1 (fr) | 2008-06-16 | 2010-05-28 | Airbus France | Dispositif de comptage d'oscillations d'un signal temporel oscillant |
| EP2396761A4 (en) | 2008-11-14 | 2013-09-25 | Thinkeco Power Inc | SYSTEM AND METHOD FOR DEMOCRATIZING POWER TO PRODUCE A META EXCHANGE |
| US8489245B2 (en) | 2009-02-06 | 2013-07-16 | David Carrel | Coordinated energy resource generation |
| US7821437B1 (en) | 2009-04-08 | 2010-10-26 | Rosemount Inc. | Line noise analysis and detection and measurement error reduction |
| US8311778B2 (en) | 2009-09-22 | 2012-11-13 | Rosemount Inc. | Industrial process control transmitter with multiple sensors |
| US9057634B2 (en) | 2010-08-11 | 2015-06-16 | Rosemount Inc. | Noise detection and avoidance |
| US8449181B2 (en) | 2010-08-26 | 2013-05-28 | Rosemount Inc. | Process fluid temperature measurement |
-
2007
- 2007-08-06 US US11/834,221 patent/US8898036B2/en active Active
-
2008
- 2008-08-05 CN CN200880102161.4A patent/CN101772745B/zh active Active
- 2008-08-05 JP JP2010519967A patent/JP5175347B2/ja active Active
- 2008-08-05 CA CA2694936A patent/CA2694936C/en active Active
- 2008-08-05 WO PCT/US2008/009394 patent/WO2009020591A1/en active Application Filing
- 2008-08-05 RU RU2010108301/08A patent/RU2450311C2/ru active
- 2008-08-05 EP EP08795030.9A patent/EP2185984B8/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0511553A1 (en) * | 1991-04-29 | 1992-11-04 | Rockwell International Corporation | Calibration system |
| CN2165575Y (zh) * | 1993-04-29 | 1994-05-18 | 大庆石油管理局供电公司 | 监测载波机的采集变送器 |
| US6041287A (en) * | 1996-11-07 | 2000-03-21 | Reliance Electric Industrial Company | System architecture for on-line machine diagnostics |
| US5965819A (en) * | 1998-07-06 | 1999-10-12 | Csi Technology | Parallel processing in a vibration analyzer |
| US6289735B1 (en) * | 1998-09-29 | 2001-09-18 | Reliance Electric Technologies, Llc | Machine diagnostic system and method for vibration analysis |
Also Published As
| Publication number | Publication date |
|---|---|
| US20090043530A1 (en) | 2009-02-12 |
| CA2694936A1 (en) | 2009-02-12 |
| JP5175347B2 (ja) | 2013-04-03 |
| RU2010108301A (ru) | 2011-09-20 |
| RU2450311C2 (ru) | 2012-05-10 |
| CA2694936C (en) | 2016-11-29 |
| US8898036B2 (en) | 2014-11-25 |
| WO2009020591A1 (en) | 2009-02-12 |
| JP2010536092A (ja) | 2010-11-25 |
| EP2185984B8 (en) | 2017-02-22 |
| EP2185984B1 (en) | 2016-10-05 |
| EP2185984A1 (en) | 2010-05-19 |
| CN101772745A (zh) | 2010-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101772745B (zh) | 具有加速度传感器的过程变量变送器 | |
| CN100487616C (zh) | 具有基于振动的诊断的过程装置 | |
| US7630861B2 (en) | Dedicated process diagnostic device | |
| CN101821690B (zh) | 具有振动传感器的过程控制变送器 | |
| RU2493467C2 (ru) | Способ диагностики обнаружения отказа компонента регулирующего клапана | |
| US6539267B1 (en) | Device in a process system for determining statistical parameter | |
| JP2008262375A (ja) | 異常診断結果出力機能を有するフィールド機器と異常診断結果出力方法 | |
| EP1549918B1 (en) | Monitoring and diagnosting a technical installation using purely mechanically activated signalling means | |
| US20230265871A1 (en) | Detection of an anomaly in a fluid power system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |