CN102645921A - Measurement and control device of nitrogen system - Google Patents
Measurement and control device of nitrogen system Download PDFInfo
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- CN102645921A CN102645921A CN2012101073867A CN201210107386A CN102645921A CN 102645921 A CN102645921 A CN 102645921A CN 2012101073867 A CN2012101073867 A CN 2012101073867A CN 201210107386 A CN201210107386 A CN 201210107386A CN 102645921 A CN102645921 A CN 102645921A
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Abstract
The invention discloses a measurement and control device of a nitrogen system. The measurement and control device comprises a PLC (Programmable Logic Controller), a field control module, a remote-control module, a first power supply module and a second power supply module, wherein the PLC is controlled through the field control module to measure and control each measurement and control instrument in the nitrogen system, and the remote-control module can also carry out measurement and control; and the first power supply module and the second power supply module are respectively used for supplying power for the PLC and the remote-control module, wherein, the remote-control module is provided with upper computers being standby for each other and Ethernets being standby for each other; the PLC is provided with CPUs (Central Processing Unit) being standby for each other; and both the first power supply module and the second power supply module are provided with a standby power supply for supplying power for the device. The measurement and control device has the advantages that the measurement and the control to various signals in the nitrogen system can be realized, and the measurement and the control to the complex nitrogen system of engine plume and satellite thermal-vacuum tests are met. Through the CPUs, the Ethernets and the upper computers which are standby for each other, faults of the CPUs, the Ethernets or the upper computers are avoided to cause the measurement and the control to fail.
Description
Technical field
The invention belongs to the vacuum science technical field, the present invention relates to a kind of nitrogen system measuring and controlling, specifically be meant the outer flow process systematic survey control device of a kind of liquid nitrogen gas nitrogen.
Background technology
Generally speaking, the practical applications of engine and satellite all be unable to do without tight ground experiment, carries out ground experiment and be unable to do without measuring and controlling.Estimate the actual performance of an engine and satellite, need the lot of test data, this just needs measuring and controlling that believable data can be provided.
Vacuum plume effect test system (multi-functional plume testing platform) is the multi-usage test unit, is mainly used in space flight appearance, control thruster plume experimental study, takes into account thermal vacuum tests such as satellite simultaneously.Nitrogen system equipment in the vacuum plume effect test system is numerous, and it is various to need to measure the signal kinds of controlling, and comprises pressure, temperature, flow, liquid level, valve, liquid nitrogen pump, electric heater etc., and requirement can be carried out the measurement and the control of 200 road signals simultaneously.At present, domestic also do not have to be used for the dual-purpose ground experiment platform measuring control device that satellite thermal vacuum test can be used for the engine plume testing again.For satisfactory completion ground experiment; Be necessary for engine plume testing and satellite thermal vacuum test and be furnished with the dual-purpose ground experiment platform measuring control device of a cover; In the dual-purpose ground experiment platform measuring control device of this cover, include the nitrogen system measuring and controlling, this has just determined the singularity of nitrogen system measuring and controlling.
Summary of the invention
In order to address the above problem; The present invention not only satisfies the engine plume testing but also satisfy the nitrogen system measuring and controlling in the satellite thermal vacuum test for vacuum plume effect test system (multi-functional plume testing platform) provides a kind of; Adopt the double copies Redundancy Design, can satisfy long-time continual measurement and control the observing and controlling object.
A kind of nitrogen system measuring and controlling is characterized in that: comprise PLC programmable control module and remote control module, These field control modules, first supply module and second supply module.
The said PLC of stating Programmable Logic Controller module comprises CPU module, analog quantity load module, analog output module, digital quantity input module, digital quantity output module, first front connector, second front connector, the 3rd front connector, the 4th front connector, a MPI interface, the 2nd MPI interface, communication card and PLC power module.
Wherein, the analog quantity load module is taken into account liquid level gauge through first front connector with each pressure transducer, temperature sensor, flow in the nitrogen system and is linked to each other, and is connected to the CPU module; Analog output module links to each other with diaphragm valve in the nitrogen system through second front connector, and is connected to the CPU module; Digital quantity input module is connected through valve positioner in the 3rd front connector and the nitrogen system, and is connected to the CPU module; Digital quantity input module links to each other with liquid nitrogen pump, pneumatic stopping valve, electric heater in the nitrogen system through the 4th front connector.
The CPU module links to each other with These field control modules through a MPI interface, realizes the real-time Communication for Power between PLC programmable control module and These field control modules; The CPU module also links to each other with communication card through the 2nd MPI interface, realizes the real-time Communication for Power between PLC programmable control module and remote control module through communication card.
The PLC power module is used for being the CPU module for power supply, thereby realizes the power supply to PLC programmable control module and These field control modules.
Above-mentioned remote control module comprises upper computer module, Ethernet, RS232 serial server, teledata process computer, printer; Wherein, upper computer module is connected to communication card through Ethernet; Teledata process computer one end links to each other with Ethernet through the RS232 serial server; The teledata process computer other end is connected to printer.
In the said structure; The analog quantity load module is used for obtaining the analog measurement signal that each pressure transducer, temperature sensor, flow in the nitrogen system are taken into account liquid level gauge; Carrying out the A/D conversion, is that digital quantity is measured signal data with the analog measurement conversion of signals, transfers to the CPU module; Digital quantity input module is used for obtaining the digital quantity measurement signal data of valve positioner, and transfers to the CPU module.
The CPU module is measured signal data with the digital quantity that receives, sends to These field control modules through a MPI interface, shows the on off state of each valve thus at the scene on the control module; Simultaneously, the CPU module is also measured signal data through communication card with the digital quantity that receives, and sends to upper computer module through Ethernet, shows through upper computer module; Simultaneously, the CPU module is also measured signal data through communication card with the digital quantity that receives, and sends to the teledata process computer through Ethernet by the RS232 serial server and stores, and analyzes and controls printer and print.
Also can realize aperture control and liquid nitrogen pump, the pneumatic stopping valve of the diaphragm valve in the nitrogen system, the ON/OFF control of electric heater in the above-mentioned These field control modules and first host computer or second host computer, be specially:
When adopting These field control modules to carry out the ON/OFF control of aperture control and the liquid nitrogen pump of the diaphragm valve in the detection and control terminal, pneumatic stopping valve, electric heater; Through setting the opening value of diaphragm valve in the control module at the scene; Send the digital quantity control signal of diaphragm valve aperture to the CPU module through a MPI interface; And send to analog output module through the CPU module and carry out D/A conversion, convert the control signal of diaphragm valve into aperture that continuous analog signal drives diaphragm valve and regulate; Send the ON/OFF digital quantity control signal data of liquid nitrogen pump, pneumatic stopping valve, electric heater to the CPU module through a MPI interface through These field control modules; And send to the digital quantity output module through the CPU module, drive the ON/OFF of liquid nitrogen pump, pneumatic stopping valve, electric heater through the digital quantity output module; In the said process; The CPU module also sends to upper computer module by communication card through Ethernet with the ON/OFF digital quantity control signal data of the digital quantity control signal of the diaphragm valve aperture that receives and liquid nitrogen pump, pneumatic stopping valve, electric heater, shows aperture and liquid nitrogen pump, the pneumatic stopping valve of diaphragm valve, the open/close state of electric heater through upper computer module; Simultaneously; The CPU module also sends to teledata process computer through Ethernet by the RS232 serial server by communication card with the ON/OFF digital quantity control signal data of the digital quantity control signal of the diaphragm valve aperture that receives and liquid nitrogen pump, pneumatic stopping valve, electric heater and stores, and analyzes and the control printer prints.
When adopting upper computer module to carry out the ON/OFF control of aperture control and the liquid nitrogen pump of the diaphragm valve in the detection and control terminal, pneumatic stopping valve, electric heater; Through in upper computer module, setting the opening value of diaphragm valve; Send the digital quantity control signal of diaphragm valve aperture to the CPU module by communication card through Ethernet; And send to analog output module through the CPU module and carry out D/A conversion, convert the control signal of diaphragm valve into aperture that continuous analog signal drives diaphragm valve and regulate; Send the ON/OFF digital quantity control signal data of liquid nitrogen pump, pneumatic stopping valve, electric heater to the CPU module by communication card through Ethernet through upper computer module; And send to the digital quantity output module through the CPU module, drive the ON/OFF of liquid nitrogen pump, pneumatic stopping valve, electric heater through the digital quantity output module; In the said process; The CPU module also sends to These field control modules by communication card through a MPI interface with the ON/OFF digital quantity control signal data of the digital quantity control signal of the diaphragm valve aperture that receives and liquid nitrogen pump, pneumatic stopping valve, electric heater, shows aperture and liquid nitrogen pump, the pneumatic stopping valve of diaphragm valve, the open/close state of electric heater through These field control modules; Above-mentioned upper computer module is also also measured signal data with the digital quantity that receives with the ON/OFF digital quantity control signal data of the digital quantity control signal of the diaphragm valve aperture that receives and liquid nitrogen pump, pneumatic stopping valve, electric heater and is stored through sending to the teledata process computer through Ethernet by the RS232 serial server, analyzes and the control printer prints.
Said first supply module comprises first power distribution cabinet and stabilized voltage supply device; Wherein, first power distribution cabinet is that stabilized voltage supply device provides power supply; Stabilized voltage supply device is that the PLC power module in the PLC programmable control module provides power supply, comprises the D.C. regulated power supply and first alternating current steady voltage plug; D.C. regulated power supply is used for exporting the adjustable voltage of 0～24V and the adjustable current of 4～20mA; First alternating current steady voltage plug is used to provide the stable AC power supply;
Second supply module comprises second power distribution cabinet and second alternating current steady voltage plug; Wherein, second power distribution cabinet is that second alternating current steady voltage plug provides power supply; Second alternating current steady voltage plug is that remote control module provides power supply.
The invention has the advantages that:
1, adopts redundant CPU modular design in the nitrogen system measuring and controlling of the present invention, avoid cpu fault to cause the observing and controlling failure;
2, adopt redundant Ethernet design in the nitrogen system measuring and controlling of the present invention, avoiding too, network failure causes the observing and controlling failure;
3, adopt redundant host computer design in the nitrogen system measuring and controlling of the present invention, avoid the host computer fault to cause the observing and controlling failure;
4, adopt the design of UPS standby power supply in the nitrogen system measuring and controlling of the present invention, can stablize continued power, avoid outage to cause the observing and controlling failure;
5, nitrogen system measuring and controlling of the present invention can realize that investigating method is flexible to the scene and the remote measurement control of the detection and control terminal of nitrogen system;
6, nitrogen system measuring and controlling of the present invention can realize the measurement and the control of 200 road signals in the nitrogen system, complicated nitrogen system observing and controlling when promptly satisfying the engine plume testing and satisfying satellite thermal vacuum test again;
7, nitrogen system measuring and controlling of the present invention can realize uninterrupted observing and controlling to 200 road signals in the nitrogen system, and the synchronous signal antijamming capability is strong.
Description of drawings
Fig. 1 is a nitrogen system measuring and controlling overall schematic of the present invention;
Fig. 2 is nitrogen system measuring and controlling each several part structure of the present invention and control relation block diagram.
Among the figure:
1-PLC programmable control module 2-remote control module 3-These field control modules 4-first supply module
The 5-second supply module 6-detection and control terminal 101-CPU module 102-analog quantity load module
103-analog output module 104-digital quantity input module 105-digital quantity output module 106-first front connector
The 107-second front connector 108-the 3rd front connector 109-the 4th front connector 110-the one MPI interface
111-the 2nd MPI interface 112-communication card 113-PLC power module 1011-the one CPU
1012-the 2nd CPU 201-upper computer module 202-first Ethernet 203-second Ethernet
204-RS232 serial server 205-teledata process computer 206-printer
The 2011-first host computer 2012-second host computer 401-first power distribution cabinet 402-stabilized voltage supply device
The 403-first ups power 4021-D.C. regulated power supply 4022-first alternating current steady voltage plug
The 501-second power distribution cabinet 502-second AC voltage-stabilizing electricity 503-second ups power 601-pressure transducer
The source
602-temperature sensor 603-flowmeter 604-liquid level gauge 605-diaphragm valve
606-valve positioner 607-liquid nitrogen pump 608-pneumatic stopping valve 609-electric heater
Embodiment
To combine accompanying drawing and embodiment that the present invention is done further detailed description below.
A kind of nitrogen system measuring and controlling of the present invention; Comprise the PLC programmable control module 1 and These field control modules 3 that are installed in the switch board; And external remote control module 2, first supply module 4 and second supply module 5; As shown in Figure 1, operating personnel can carry out observing and controlling through 1 pair of detection and control terminal of These field control modules 3 control PLC programmable control modules 6, also can carry out observing and controlling through 5 pairs of detection and control terminals of remote control module 6; First supply module 4 and second supply module 5 are used for respectively to PLC programmable control module 1 and remote control module 2 power supplies.Said detection and control terminal 6 is the various measurement and control instruments in the nitrogen system, comprises each pressure transducer 601, temperature sensor 602, flowmeter 603, liquid level gauge 604, diaphragm valve 605, valve positioner 606, liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609.
As shown in Figure 2, above-mentioned PLC Programmable Logic Controller module 1 comprises CPU module 101, analog quantity load module 102, analog output module 103, digital quantity input module 104, digital quantity output module 105, first front connector 106, second front connector 107, the 3rd front connector 108, the 4th front connector 109, a MPI interface 110, the 2nd MPI interface 111, communication card 112 and PLC power module 113.
Wherein, analog quantity load module 102 links to each other with each pressure transducer 601, temperature sensor 602, flowmeter 603 and liquid level gauge 604 in the detection and control terminal 6 through first front connector 106, and is connected to CPU module 101; Analog output module 103 links to each other with diaphragm valve 605 in the detection and control terminal 6 through second front connector 107, and is connected to CPU module 101; Digital quantity input module 104 is connected through valve positioner 606 in the 3rd front connector 108 and the detection and control terminal 6, and is connected to CPU module 101; Digital quantity input module 105 links to each other with liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 in the detection and control terminal 6 through the 4th front connector 109.
CPU module 101 links to each other with These field control modules through a MPI interface 110, realizes the real-time Communication for Power of 3 of PLC programmable control module 1 and These field control modules; Said These field control modules 3 is for touching control flow.CPU module 101 also links to each other with communication card 112 through the 2nd MPI interface 111, realizes the real-time Communication for Power of 2 of PLC programmable control modules 1 and remote control modules, said communication card 112 employing CP5611 communication cards through communication card 112.Said CPU module 101 is made up of a CPU1011 and the 2nd CPU1012; The one CPU1011 and the 2nd CPU1012 backup each other; When a CPU1011 or the 2nd CPU1012 fault, the 2nd CPU1012 or a CPU1011 start automatically, avoid causing the observing and controlling failure because of cpu fault.
Said PLC power module 113 is used for being 101 power supplies of CPU module, thereby realizes the power supply to whole PLC programmable control module 1 and These field control modules 3.
Above-mentioned remote control module 2 comprises upper computer module 201, first Ethernet 202, second Ethernet 203, RS232 serial server 204, teledata process computer 205, printer 206, is used to realize the Long-distance Control and the data processing of PLC programmable control module 1.Wherein, Upper computer module 201 is made up of first host computer 2011 and second host computer 2012; First host computer 2011 and second host computer 2012 backup each other; When first host computer 2011 or second host computer, 2012 faults, second host computer 2012 or first host computer 2011 start automatically, avoid causing the observing and controlling failure because of the host computer fault.First host computer 2011 and second host computer 2012 all are connected to communication card 112 through first Ethernet 202, second Ethernet 203; First Ethernet 202 and second Ethernet 203 backup each other; Avoid because of first Ethernet 202 or second Ethernet, 203 faults cause the observing and controlling failure, first host computer 2011 or second host computer 2012 can carry out data communication through first Ethernet 202 or second Ethernet 203 with CPU module 101 respectively thus; Teledata process computer 205 1 ends link to each other with second Ethernet 203 with first Ethernet 202 through RS232 serial server 204, avoid causing data processing to be failed because of first Ethernet 202 or second Ethernet, 203 faults; Teledata process computer 205 other ends are connected to printer 206.
In the said structure; Analog quantity load module 102 is used for obtaining the analog measurement signal (being the analog measurement signal of pressure, temperature, flow, liquid level) of each pressure transducer 601, temperature sensor 602, flowmeter 603 and liquid level gauge 604 in the detection and control terminal 6; Carry out the A/D conversion; With the analog measurement conversion of signals is that digital quantity is measured signal data, transfers to CPU module 101.Digital quantity input module 104 is used for obtaining the digital quantity measurement signal data (valve location digital quantity signal data) of valve positioner 606, and transfers to CPU module 101.
CPU module 101 is measured signal data with the digital quantity that receives, and (that is: the digital quantity of each pressure transducer 601, temperature sensor 602, flowmeter 603 and liquid level gauge 604 is measured signal data in the detection and control terminal 6; And the digital quantity of valve positioner 606 is measured signal data); Send to These field control modules 3 through a MPI interface 110, show the on off state of each valve thus at the scene on the control module 3.Simultaneously; CPU module 101 is also measured signal data through communication card 112 with the digital quantity that receives; Send to first host computer 2011 or second host computer 2012 through first Ethernet 202 or second Ethernet 203, show through first host computer 2011 or second host computer 2012.Simultaneously; CPU module 101 is also measured signal data through communication card 112 with the digital quantity that receives; Warp first Ethernet 202 or second Ethernet 203 send to teledata process computer 205 by RS232 serial server 204 and store, and analyze and control printer 206 and print.The on off state of each valve shows with the different colours of valve symbol in the above-mentioned control module at the scene 3 and first host computer 2011 or second host computer 2012.
Also can realize aperture control and liquid nitrogen pump 607, the pneumatic stopping valve 608 of the diaphragm valve 605 in the detection and control terminal 6, the ON/OFF control of electric heater 609 in the above-mentioned These field control modules 3 and first host computer 2011 or second host computer 2012, be specially:
When adopting These field control modules 3 to carry out the ON/OFF control of aperture control and the liquid nitrogen pump 607 of the diaphragm valve 605 in the detection and control terminal 6, pneumatic stopping valve 608, electric heater 609; Through setting the opening value of diaphragm valve 605 in the control module 3 at the scene; Send the digital quantity control signal of diaphragm valve 605 apertures to CPU module 101 through a MPI interface 110; And send to analog output module 103 through CPU module 101 and carry out D/A conversion, convert the control signal of diaphragm valve 605 into aperture that continuous analog signal drives diaphragm valve 5 and regulate.Through the ON/OFF digital quantity control signal data of These field control modules 3 warps the one MPI interface 110 to CPU module 101 transmission liquid nitrogen pumps 607, pneumatic stopping valve 608, electric heater 609; And send to digital quantity output module 105 through CPU module 101, drive the ON/OFF of liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 through digital quantity output module 105.In the said process; The CPU module also sends to first host computer 2011 or second host computer 2012 by communication card 112 through first Ethernets 202 or second Ethernet 203 with the ON/OFF digital quantity control signal data of the digital quantity control signal of the diaphragm valve that receives 605 apertures and liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609, shows aperture and liquid nitrogen pump 607, the pneumatic stopping valve 608 of diaphragm valves 5, the open/close state of electric heater 609 through first host computer 2011 or second host computer 2012.Simultaneously; The CPU module also sends to teledata process computer 205 through first Ethernets 202 or second Ethernet 203 by RS232 serial server 204 by communication card 112 with the ON/OFF digital quantity control signal data of the digital quantity control signal of the diaphragm valve that receives 605 apertures and liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 and stores, and analyzes and control printer 206 prints.
When adopting first host computer 2011 or second host computer 2012 to carry out the ON/OFF control of aperture control and liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 of the diaphragm valve 605 in the detection and control terminal 6; Through in first host computer 2011 or second host computer 2012, setting the opening value of diaphragm valve 605; Warp first Ethernet 202 or second Ethernet 203 are sent the digital quantity control signal of diaphragm valve 605 apertures to the CPU module by communication card 112; And send to analog output module 103 through CPU module 101 and carry out D/A conversion, convert the control signal of diaphragm valve 605 into aperture that continuous analog signal drives diaphragm valve 5 and regulate.The ON/OFF digital quantity control signal data of sending liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 to the CPU module by communication card 112 through first Ethernets 202 or second Ethernet 203 through first host computer 2011 or second host computer 2012; And send to digital quantity output module 105 through CPU module 101, drive the ON/OFF of liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 through digital quantity output module 105.In the said process; The CPU module also sends to These field control modules 3 by communication card 112 through a MPI interface 110 with the ON/OFF digital quantity control signal data of the digital quantity control signal of the diaphragm valve that receives 605 apertures and liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609, shows aperture and liquid nitrogen pump 607, the pneumatic stopping valve 608 of diaphragm valves 5, the open/close state of electric heater 609 through These field control modules 3.Above-mentioned first host computer 2011 or second host computer 2012 are also also measured signal data with the digital quantity that receives with the ON/OFF digital quantity control signal data of the digital quantity control signal of the diaphragm valve that receives 605 apertures and liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 and are stored through sending to teledata process computer 205 through first Ethernet 202 or second Ethernet 203 by RS232 serial server 204, analyze and control printer 206 prints.
When any digital data is lost in first host computer 2011 or second host computer 2012, can give first host computer 2011 or second host computer 2012 thus through the data transmission that teledata process computer 205 warp first Ethernets 202 or second Ethernet 203 will be lost.
Said first supply module 4 is used for being 113 power supplies of the PLC power module in the PLC programmable control module 1, comprises first power distribution cabinet 401, stabilized voltage supply device 402 and first ups power 403; Wherein, first power distribution cabinet 401 is stabilized voltage supply device 402 and 403 power supplies of first ups power; PLC power module 113 in stabilized voltage supply device 402 and the PLC programmable control module 1 provides stablizes glitch-free power supply supply, comprises the D.C. regulated power supply 4021 and first alternating current steady voltage plug 4022; The adjustable voltage of D.C. regulated power supply 4021 exportable 0～24V and the adjustable current of 4～20mA; First alternating current steady voltage plug 4022 can provide stable AC power supply, the interference of avoiding city's electro-mechanical wave to cause; First ups power 403 provides standby power supply for PLC power module 113; Chargedly at ordinary times do not work, when 401 outages of first power distribution cabinet, in time start ups power 403; For stabilized voltage supply device 402 power supply is provided through ups power 403, guarantees PLC power module 113 operate as normal.
Claims (7)
1. a nitrogen system measuring and controlling is characterized in that: comprise PLC programmable control module and remote control module, These field control modules, first supply module and second supply module;
Said PLC Programmable Logic Controller module comprises CPU module, analog quantity load module, analog output module, digital quantity input module, digital quantity output module, first front connector, second front connector, the 3rd front connector, the 4th front connector, a MPI interface, the 2nd MPI interface, communication card and PLC power module;
Wherein, the analog quantity load module is taken into account liquid level gauge through first front connector with each pressure transducer, temperature sensor, flow in the nitrogen system and is linked to each other, and is connected to the CPU module; Analog output module links to each other with diaphragm valve in the nitrogen system through second front connector, and is connected to the CPU module; Digital quantity input module is connected through valve positioner in the 3rd front connector and the nitrogen system, and is connected to the CPU module; Digital quantity input module links to each other with liquid nitrogen pump, pneumatic stopping valve, electric heater in the nitrogen system through the 4th front connector;
The CPU module links to each other with These field control modules through a MPI interface, realizes the real-time Communication for Power between PLC programmable control module and These field control modules; The CPU module also links to each other with communication card through the 2nd MPI interface, realizes the real-time Communication for Power between PLC programmable control module and remote control module through communication card;
The PLC power module is used for being the CPU module for power supply, thereby realizes the power supply to PLC programmable control module and These field control modules;
Above-mentioned remote control module comprises upper computer module, Ethernet, RS232 serial server, teledata process computer, printer; Wherein, upper computer module is connected to communication card through Ethernet; Teledata process computer one end links to each other with Ethernet through the RS232 serial server; The teledata process computer other end is connected to printer;
In the said structure; The analog quantity load module is used for obtaining the analog measurement signal that each pressure transducer, temperature sensor, flow in the nitrogen system are taken into account liquid level gauge; Carrying out the A/D conversion, is that digital quantity is measured signal data with the analog measurement conversion of signals, transfers to the CPU module; Digital quantity input module is used for obtaining the digital quantity measurement signal data of valve positioner, and transfers to the CPU module;
The CPU module is measured signal data with the digital quantity that receives, sends to These field control modules through a MPI interface, shows the on off state of each valve thus at the scene on the control module; Simultaneously, the CPU module is also measured signal data through communication card with the digital quantity that receives, and sends to upper computer module through Ethernet, shows through upper computer module; Simultaneously, the CPU module is also measured signal data through communication card with the digital quantity that receives, and sends to the teledata process computer through Ethernet by the RS232 serial server and stores, and analyzes and controls printer and print;
Also can realize aperture control and liquid nitrogen pump, the pneumatic stopping valve of the diaphragm valve in the nitrogen system, the ON/OFF control of electric heater in the above-mentioned These field control modules and first host computer or second host computer, be specially:
When adopting These field control modules to carry out the ON/OFF control of aperture control and the liquid nitrogen pump of the diaphragm valve in the detection and control terminal, pneumatic stopping valve, electric heater; Through setting the opening value of diaphragm valve in the control module at the scene; Send the digital quantity control signal of diaphragm valve aperture to the CPU module through a MPI interface; And send to analog output module through the CPU module and carry out D/A conversion, convert the control signal of diaphragm valve into aperture that continuous analog signal drives diaphragm valve and regulate; Send the ON/OFF digital quantity control signal data of liquid nitrogen pump, pneumatic stopping valve, electric heater to the CPU module through a MPI interface through These field control modules; And send to the digital quantity output module through the CPU module, drive the ON/OFF of liquid nitrogen pump, pneumatic stopping valve, electric heater through the digital quantity output module; In the said process; The CPU module also sends to upper computer module by communication card through Ethernet with the ON/OFF digital quantity control signal data of the digital quantity control signal of the diaphragm valve aperture that receives and liquid nitrogen pump, pneumatic stopping valve, electric heater, shows aperture and liquid nitrogen pump, the pneumatic stopping valve of diaphragm valve, the open/close state of electric heater through upper computer module; Simultaneously; The CPU module also sends to teledata process computer through Ethernet by the RS232 serial server by communication card with the ON/OFF digital quantity control signal data of the digital quantity control signal of the diaphragm valve aperture that receives and liquid nitrogen pump, pneumatic stopping valve, electric heater and stores, and analyzes and the control printer prints;
When adopting upper computer module to carry out the ON/OFF control of aperture control and the liquid nitrogen pump of the diaphragm valve in the detection and control terminal, pneumatic stopping valve, electric heater; Through in upper computer module, setting the opening value of diaphragm valve; Send the digital quantity control signal of diaphragm valve aperture to the CPU module by communication card through Ethernet; And send to analog output module through the CPU module and carry out D/A conversion, convert the control signal of diaphragm valve into aperture that continuous analog signal drives diaphragm valve and regulate; Send the ON/OFF digital quantity control signal data of liquid nitrogen pump, pneumatic stopping valve, electric heater to the CPU module by communication card through Ethernet through upper computer module; And send to the digital quantity output module through the CPU module, drive the ON/OFF of liquid nitrogen pump, pneumatic stopping valve, electric heater through the digital quantity output module; In the said process; The CPU module also sends to These field control modules by communication card through a MPI interface with the ON/OFF digital quantity control signal data of the digital quantity control signal of the diaphragm valve aperture that receives and liquid nitrogen pump, pneumatic stopping valve, electric heater, shows aperture and liquid nitrogen pump, the pneumatic stopping valve of diaphragm valve, the open/close state of electric heater through These field control modules; Above-mentioned upper computer module is also also measured signal data with the digital quantity that receives with the ON/OFF digital quantity control signal data of the digital quantity control signal of the diaphragm valve aperture that receives and liquid nitrogen pump, pneumatic stopping valve, electric heater and is stored through sending to the teledata process computer through Ethernet by the RS232 serial server, analyzes and the control printer prints;
Said first supply module comprises first power distribution cabinet and stabilized voltage supply device; Wherein, first power distribution cabinet is that stabilized voltage supply device provides power supply; Stabilized voltage supply device is that the PLC power module in the PLC programmable control module provides power supply, comprises the D.C. regulated power supply and first alternating current steady voltage plug; D.C. regulated power supply is used for exporting the adjustable voltage of 0～24V and the adjustable current of 4～20mA; First alternating current steady voltage plug is used to provide the stable AC power supply;
Second supply module comprises second power distribution cabinet and second alternating current steady voltage plug; Wherein, second power distribution cabinet is that second alternating current steady voltage plug provides power supply; Second alternating current steady voltage plug is that remote control module provides power supply.
2. nitrogen system measuring and controlling as claimed in claim 1 is characterized in that: said CPU module is made up of a CPU and the 2nd CPU, and a CPU and the 2nd CPU backup each other.
3. nitrogen system measuring and controlling as claimed in claim 1 is characterized in that: said upper computer module comprises first host computer and second host computer, and first host computer and second host computer backup each other; Ethernet comprises first Ethernet and second Ethernet, and first Ethernet and second Ethernet backup each other; First host computer and second host computer all are connected to communication card through first Ethernet, second Ethernet; First Ethernet all links to each other with the teledata process computer through the RS232 serial server with second Ethernet.
4. nitrogen system measuring and controlling as claimed in claim 1 is characterized in that: said first supply module also comprises first ups power; Through first power distribution cabinet is UPS charging, when first power distribution cabinet cuts off the power supply, is that stabilized voltage supply device provides power supply through ups power.
5. nitrogen system measuring and controlling as claimed in claim 1; It is characterized in that: said second supply module also comprises second ups power; Through second power distribution cabinet is the charging of second ups power, when second power distribution cabinet cuts off the power supply, is that second alternating current steady voltage plug provides power supply through second ups power.
6. nitrogen system measuring and controlling as claimed in claim 1 is characterized in that: said These field control modules is for touching control flow.
7. nitrogen system measuring and controlling as claimed in claim 1 is characterized in that: said communication card adopts the CP5611 communication card.
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| CN2012101073867A CN102645921B (en) | 2012-04-12 | 2012-04-12 | Measurement and control device of nitrogen system |
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| CN2012101073867A CN102645921B (en) | 2012-04-12 | 2012-04-12 | Measurement and control device of nitrogen system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676987A (en) * | 2013-12-18 | 2014-03-26 | 中煤第五建设有限公司 | Freezing station liquid ammonia automatic control system |
| CN105204422A (en) * | 2015-09-24 | 2015-12-30 | 西安航天动力试验技术研究所 | Automated redundant measuring and controlling system and method for engine vacuumizing |
| CN112180901A (en) * | 2020-10-14 | 2021-01-05 | 北京航天发射技术研究所 | Measurement and control unit and measurement and control method for bomb airtight gas distribution device |
| CN112856218A (en) * | 2020-12-25 | 2021-05-28 | 北京动力机械研究所 | Automatic flow control and protection method based on liquid oxygen flow regulation |
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| US6244824B1 (en) * | 1994-11-23 | 2001-06-12 | Coltec Industries Inc. | System and methods for controlling rotary screw compressors |
| US20030236579A1 (en) * | 2000-07-07 | 2003-12-25 | Markus Hauhia | Wireless diagnostic system in industrial processes |
| CN201191371Y (en) * | 2008-02-27 | 2009-02-04 | 武汉弗莱戈尔智能电子有限公司 | Remote intelligent measuring and controlling instrument |
| CN102050313A (en) * | 2009-10-27 | 2011-05-11 | 西安博恒智能技术有限公司 | Temperature detection device for electric wire type in-situ bus coal conveyor belt motor |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6244824B1 (en) * | 1994-11-23 | 2001-06-12 | Coltec Industries Inc. | System and methods for controlling rotary screw compressors |
| US20030236579A1 (en) * | 2000-07-07 | 2003-12-25 | Markus Hauhia | Wireless diagnostic system in industrial processes |
| CN201191371Y (en) * | 2008-02-27 | 2009-02-04 | 武汉弗莱戈尔智能电子有限公司 | Remote intelligent measuring and controlling instrument |
| CN102050313A (en) * | 2009-10-27 | 2011-05-11 | 西安博恒智能技术有限公司 | Temperature detection device for electric wire type in-situ bus coal conveyor belt motor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676987A (en) * | 2013-12-18 | 2014-03-26 | 中煤第五建设有限公司 | Freezing station liquid ammonia automatic control system |
| CN105204422A (en) * | 2015-09-24 | 2015-12-30 | 西安航天动力试验技术研究所 | Automated redundant measuring and controlling system and method for engine vacuumizing |
| CN105204422B (en) * | 2015-09-24 | 2018-09-04 | 西安航天动力试验技术研究所 | Engine vacuumizes redundant automation TT＆C system and method |
| CN112180901A (en) * | 2020-10-14 | 2021-01-05 | 北京航天发射技术研究所 | Measurement and control unit and measurement and control method for bomb airtight gas distribution device |
| CN112856218A (en) * | 2020-12-25 | 2021-05-28 | 北京动力机械研究所 | Automatic flow control and protection method based on liquid oxygen flow regulation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102645921B (en) | 2013-11-13 |
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