CN1086077C - 测量一个数字传输装置信号传送时间的设备 - Google Patents

测量一个数字传输装置信号传送时间的设备 Download PDF

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CN1086077C
CN1086077C CN96111285A CN96111285A CN1086077C CN 1086077 C CN1086077 C CN 1086077C CN 96111285 A CN96111285 A CN 96111285A CN 96111285 A CN96111285 A CN 96111285A CN 1086077 C CN1086077 C CN 1086077C
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transmission time
cadence
beat
signal transmission
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CN1149794A (zh
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M·阿尔格-莫尼尔
Y·阿马
R·克兰马
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Infineon Technologies Wireless Solutions Ltd
Intel Germany Holding GmbH
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Siemens AG
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • H04B3/462—Testing group delay or phase shift, e.g. timing jitter
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/24—Marginal checking or other specified testing methods not covered by G06F11/26, e.g. race tests

Abstract

测量数字型传输装置(1)信号传送时间的设备，其中，上部和下部位置(2、3)各具有一发送装置(12、9)和接收装置(16，5)用于发送和接收加节拍的有用信号，接收装置(16、5)把节拍信号与各有用信号分开。在(2)给发送的有用信号加设定的节拍信号(15)，而在(3)给要发送的有用信号加上导出的节拍信号(7’)，(2)的相位比较装置(19)把设定的节拍信号(15)与分离出的节拍信号(18)比较，计算装置(20)从比较结果计算出信号传送时间(26)。

Description

测量一个数字传输装置信号传送时间的设备
本发明涉及一种测量连接在一上部位置和一下部位置之间的数字传输装置信号传送时间的设备。
一个传输装置的信号传送时间随着结构的不同可以有很大起伏。在使用导线连接作为传输媒体的时候，信号传送时间主要由传输线长度决定。为了维护传输装置在带有Radio-In-The-Loop(RITL)的应用中和按DECT标准在具有无绳电话终端设备的那些系统中使用时，有必要能够分别测定每段传输线的传送时间和在必要时测定由此而产生的、成比例的传输线长度。这种类型的测量有时是根据需要借助外部测量设备手动操作的。
本发明的任务在于提出一种设备，用该设备可随时自动进行信号传送时间的测量。
本发明测量在上部位置和下部位置之间连接的数字型传输装置的信号传送时间的设备，在该设备中上部和下部位置各具有一个发送装置，用于发送各用一节拍信号加节拍的有用信号经传输装置到各相对应的位置并且各具有一接收装置用于接收由各相对应的位置加节拍的有用信号，这些接收装置把所叠加的节拍信号与各有用信号分开。
在上部位置的各要发送的有用信号用一预先设定的节拍信号加上节拍，而在下部位置的各要发送的有用信号用一个由其接收装置分离出的节拍信号所导出的节拍信号加上节拍。
在上部位置的一个相位比较装置把给出的节拍信号与由其接收装置分离出的节拍信号相比较，并且一个计算装置从相位比较装置的比较结果计算出信号传送时间。
在从属权利要求中给出了本发明构思的发展及其进一步改进。
一个数字传输装置的测量，是通过一上部位置在与一经过该数字传输装置所连接的下部位置的相互作用中实现的，其中，在有效信号传输上叠加的节拍以及一节拍与另一节拍的相互关系被用于测量。测量设备的附加费用是比较低的，因为，加节拍和重新获取节拍的部分一般在上部位置和下部位置已经存在。所以只需要另外设置一个相位比较装置，该装置处理在上部位置所发送的有用信号和所接收的有用信号的节拍信号。在后面的计算装置中求出与此相应的信号传送时间。
在上部位置和下部位置信号传送时间不可忽略的情况下，在相位差换算成一信号传送时间之后，从中减去上部和/或下部位置的信号传送时间。由于信号的往返运动使信号传送时间加倍，所以减法运算的结果要用2除。
图1是根据本发明的测量设备的方框图。
下面借助在唯一的一张附图中示出的实施例进一步阐述本发明。
在作为实施例示出的本发明设备中，在上部位置2，例如一个交换局，和下部位置3，例如一个用户终端站之间连接一个传输装置1，例如一个电话线路。下部位置3包含一个线路匹配和分支电路4，此电路与传输装置1是双向耦合的。经传输装置1接收的信号由线路匹配和分支电路4输送给一个接收装置5，该装置由接收到的信号获得一个有用信号6及一个节拍信号7。该节拍信号7被直接或经一同步装置8的中间电路后作为节拍信号7’输送给一个发送装置9，此装置把节拍信号7’叠加到有用信号10上，并把由此得到的信号经线路匹配和分支电路4及传输装置1发送给上部位置2。
上部位置2同样包含一个与传输装置1双向耦合的馈线匹配和分支电路，即线路匹配和分支电路11，该电路由一个发送装置12得到一个信号。在发送装置12中把由节拍发生器14产生的节拍信号15叠加在有效信号13上。此外，线路匹配和分支电路11与接收装置16连接，此接收装置接收下部位置3所发送的信号，并从中获得一个有用信号17及一个节拍信号18。
为了求出传输装置1中的信号传送时间，节拍信号15和18被输送到一个相位比较装置19，例如相位检测器，该检测器求出两个节拍信号15和18之间的相移。随后把比较结果输送到计算装置20中。该计算装置借助一个系数乘法器21用一换算因子乘以比较结果，该转换因子把比较结果转换成相应的时间量纲。然而在适当设计相位比较装置19的情况下，换算因子可以等于1，因此可以去掉系数乘法器。在系数乘法器21后面是一个减法器22，该减法器从经处理所得到的相位比较结果中减去两个寄存器23和24中的数值。在寄存器23和24中存放着上部位置2及下部位置3的信号传送时间。在上部位置2和/或下部位置3的信号传送时间与传输装置1的信号传送时间相比较可忽略的情况下，寄存器23、24和/或减法器22可以去掉。最后将减法运算的结果被另一个系数乘法器25二等分，从而形成一个再现在传输装置1上的信号传送时间的信号。
所以，为了测量传送时间需要对在上部位置中的关于发送节拍与接收节拍的相位比较的信息进行处理。发送节拍是一个信号，该信号与上部位置发送的脉冲同步。接收节拍与在上部位置所接收的下部位置的脉冲同步。其中，发送和接收节拍以已知方式在下部位置结合在一起。因此，在上部位置发送和接收节拍的相位由各一恒定的、已知的在上部位置和下部位置的延迟时间以及由一双倍传输线传送时间所给出的分量所组成。该双倍传输线传送时间是这样产生的，即不仅发送信号而且接收信号必须各穿过一次传输装置。如果只对各第n个发射及接收脉冲进行处理，那么基于发送和接收节拍的节拍周期可以比较长。在此，一个计数器随着脉冲的发送开始计数直到接收脉冲到达为止。计数结果作为具有计数速度分辨率的二进制数输出，例如作为显示或者用于在一个数据处理装置中进一步加以处理。通过适当选择计数速度有可能把二进制数以某一固定的时间单位或者例如以传输线长度给出。
利用本发明，测量可以以短时间间隔(例如50ms)连续地重复进行。因此，与测定传送时间缓慢变化、例如由温度起伏引起的变化的同时，也可以测定快速变化，其识别在无线的、移动的应用中具有特别重要的意义。
此外传送时间测量的起动不仅可以由上部位置开始来实现，而且也可以由下部位置来实现，在此，通过一个特殊的信息例如经一信号通道提出测量要求。在相反方向，上部位置可以把传送时间测量结果例如借助于控制通道、数据通道或信号通道通知其下部位置。
最后，同步装置8可以用如下方式实现同步，即下部位置预先设定的延迟时间是可以整定的，这样，可以在下部位置得到一个恒定的，例如相当于标准值的传送时间。

Claims (3)

1.测量在上部位置(2)和下部位置(3)之间连接的数字型传输装置(1)的信号传送时间的设备，在该设备中上部和下部位置(2、3)各具有一个发送装置(12、9)用于发送各用一节拍信号加节拍的有用信号，经传输装置(1)到各相对应的位置(3、2)并且各具有一接收装置(16、5)用于接收由各相对应的位置(3、2)加节拍的有用信号，这些接收装置(16、5)把所叠加的节拍信号与各有用信号分开，
在上部位置(2)的各要发送的有用信号用一预先设定的节拍信号(15)加上节拍，而在下部位置(3)的各要发送的有用信号用一个由其接收装置(5)分离出的节拍信号(7)所导出的节拍信号(7’)加上节拍，
在上部位置(2)的一个相位比较装置(19)把给出的节拍信号(15)与由其接收装置(16)分离出的节拍信号(18)相比较，并且一个计算装置(20)从相位比较装置(19)的比较结果计算出信号传送时间(26)。
2.根据权利要求1所述装置，
其特征在于，
计算装置(20)用一换算因子处理比较结果，从中减去寄存器(23、24)中存放的、上部位置和下部位置(2、3)的信号传送时间，并且由此得到的差被2除，从而得到传输装置(1)的信号传送时间。
3.根据权利要求1或2其中之一所述装置，
其特征在于，
计算装置(20)通过把信号传送时间与另一换算因子相乘而求出相应的传输线长度。
CN96111285A 1995-09-07 1996-09-06 测量一个数字传输装置信号传送时间的设备 Expired - Fee Related CN1086077C (zh)

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CN1149794A (zh) 1997-05-14
TW321722B (zh) 1997-12-01
JPH09172415A (ja) 1997-06-30
JP3151410B2 (ja) 2001-04-03
EP0762667A2 (de) 1997-03-12
DE59610021D1 (de) 2003-02-06
EP0762667A3 (de) 1997-11-05
US5864581A (en) 1999-01-26
EP0762667B1 (de) 2003-01-02
DE19533113A1 (de) 1997-03-13
KR100422895B1 (ko) 2004-06-12
KR970016593A (ko) 1997-04-28
ATE230529T1 (de) 2003-01-15

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