CN102645921B - Measurement and control device of nitrogen system - Google Patents
Measurement and control device of nitrogen system Download PDFInfo
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- CN102645921B CN102645921B CN2012101073867A CN201210107386A CN102645921B CN 102645921 B CN102645921 B CN 102645921B CN 2012101073867 A CN2012101073867 A CN 2012101073867A CN 201210107386 A CN201210107386 A CN 201210107386A CN 102645921 B CN102645921 B CN 102645921B
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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 refer to the outer flow process systematic survey control device of a kind of liquid nitrogen gas nitrogen.
Background technology
Generally, the application of the engineering 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 a large amount of test figures, this just needs measuring and controlling that believable data can be provided.
Vacuum Plume effect test system (multi-functional plume testing platform) is the multifunctional test experiment device, is mainly used in space flight appearance, control thruster plume experimental study, takes into account simultaneously the thermal vacuum tests such as satellite.Nitrogen system equipment in Vacuum Plume effect test system is numerous, needs to measure the signal kinds of controlling various, comprises pressure, temperature, flow, liquid level, valve, liquid nitrogen pump, electric heater etc., and requirement can be carried out measurement and the control of 200 road signals simultaneously.At present, domestic also do not have and can be used for the dual-purpose ground experiment platform measuring control device of engine plume test again for satellite thermal vacuum test.For the satisfactory ground experiment of completing, be necessary for engine plume test and satellite thermal vacuum test and be furnished with a dual-purpose ground experiment platform measuring control device of cover, include the nitrogen system measuring and controlling in the dual-purpose ground experiment platform measuring control device of this cover, 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 is that Vacuum Plume effect test system (multi-functional plume testing platform) provides a kind of and not only met engine plume test but also met nitrogen system measuring and controlling in satellite thermal vacuum test, adopt the double copies Redundancy Design, can meet long-time continual measurement and control to 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, the first supply module and the second supply module.
The described PLC of stating Programmable Logic Controller module comprises CPU module, analog input module, analog output module, digital quantity input module, digital output module, the first front connector, the 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 input module is taken into account liquid level gauge by the first front connector with each pressure transducer, temperature sensor, flow in nitrogen system and is connected, and is connected to the CPU module; Analog output module is connected with the diaphragm valve in nitrogen system by the second front connector, and is connected to the CPU module; Digital quantity input module is connected with valve positioner in nitrogen system by the 3rd front connector, and is connected to the CPU module; Digital quantity input module is connected with liquid nitrogen pump, pneumatic stopping valve, electric heater in nitrogen system by the 4th front connector.
The CPU module is connected with These field control modules by a MPI interface, realizes the real-time Communication for Power between PLC programmable control module and These field control modules; The CPU module also is connected with communication card by the 2nd MPI interface, by communication card, realizes real-time Communication for Power between PLC programmable control module and remote control module.
The PLC power module is used for as 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, Remote data processing computing machine, printer; Wherein, upper computer module is connected to communication card by Ethernet; Remote data processing computing machine one end is connected with Ethernet by the RS232 serial server; The Remote data processing computing machine other end is connected to printer.
In said structure, the analog input module is used for obtaining each pressure transducer, temperature sensor, flow in nitrogen system and takes into account the analog measurement signal of liquid level gauge, carry out the A/D conversion, the analog measurement signal is converted to digital quantity measures signal data, transfer 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.
Digital quantity that the CPU module will receive is measured signal data, by a MPI interface, sends to These field control modules, shows at the scene thus the on off state of each valve on control module; Simultaneously, the digital quantity that the CPU module also will receive is measured signal data by communication card, through Ethernet, sends to upper computer module, by upper computer module, shows; Simultaneously, the digital quantity that the CPU module also will receive is measured signal data by communication card, through Ethernet, by the RS232 serial server, sends to the Remote data processing computing machine to store, and analyzes and controls printer and print.
Also can realize in above-mentioned These field control modules and the first host computer or the second host computer that the ON/OFF of the aperture control of the diaphragm valve in nitrogen system and liquid nitrogen pump, pneumatic stopping valve, electric heater controls, be specially:
When the ON/OFF that adopts These field control modules to carry out the aperture control of the diaphragm valve in detection and control terminal and liquid nitrogen pump, pneumatic stopping valve, electric heater is controlled, by setting the opening value of diaphragm valve in control module at the scene, send the discrete 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, the control signal of diaphragm valve is converted to continuous simulating signal drives the regulation of diaphragm valve; Send the ON/OFF discrete control signal data of liquid nitrogen pump, pneumatic stopping valve, electric heater to the CPU module through a MPI interface by These field control modules, and through the CPU module, send to the digital output module, drive the ON/OFF of liquid nitrogen pump, pneumatic stopping valve, electric heater by the digital output module; In said process, the ON/OFF discrete control signal data of the discrete control signal of the diaphragm valve aperture that the CPU module also will receive and liquid nitrogen pump, pneumatic stopping valve, electric heater sends to upper computer module by communication card through Ethernet, shows the open/close state of the aperture of diaphragm valve and liquid nitrogen pump, pneumatic stopping valve, electric heater by upper computer module; Simultaneously, the ON/OFF discrete control signal data of the discrete control signal of the diaphragm valve aperture that the CPU module also will receive and liquid nitrogen pump, pneumatic stopping valve, electric heater sends to Remote data processing computing machine to store through Ethernet by the RS232 serial server by communication card, analyzes and controls printer and print.
When the ON/OFF that adopts upper computer module to carry out the aperture control of the diaphragm valve in detection and control terminal and liquid nitrogen pump, pneumatic stopping valve, electric heater is controlled, by set the opening value of diaphragm valve in upper computer module, sent the discrete 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, the control signal of diaphragm valve is converted to continuous simulating signal drives the regulation of diaphragm valve; Sent the ON/OFF discrete control signal data of liquid nitrogen pump, pneumatic stopping valve, electric heater to the CPU module by communication card through Ethernet by upper computer module, and through the CPU module, send to the digital output module, drive the ON/OFF of liquid nitrogen pump, pneumatic stopping valve, electric heater by the digital output module; In said process, the ON/OFF discrete control signal data of the discrete control signal of the diaphragm valve aperture that the CPU module also will receive and liquid nitrogen pump, pneumatic stopping valve, electric heater sends to These field control modules by communication card through a MPI interface, shows the open/close state of the aperture of diaphragm valve and liquid nitrogen pump, pneumatic stopping valve, electric heater by These field control modules; The digital quantity that the ON/OFF discrete control signal data of the discrete control signal of the diaphragm valve aperture that above-mentioned upper computer module also will receive and liquid nitrogen pump, pneumatic stopping valve, electric heater also will receive is measured signal data by through Ethernet, by the RS232 serial server, sending to the Remote data processing computing machine to store, and analyzes and controls printer and print.
Described the first supply module comprises the first power distribution cabinet and stabilized voltage supply device; Wherein, the first power distribution cabinet provides power supply for stabilized voltage supply device; Stabilized voltage supply device, for the PLC power module in the PLC programmable control module provides power supply, comprises D.C. regulated power supply and the 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; The first alternating current steady voltage plug is used to provide stable Alternating Current Power Supply;
The second supply module comprises the second power distribution cabinet and the second alternating current steady voltage plug; Wherein, the second power distribution cabinet provides power supply for the second alternating current steady voltage plug; The second alternating current steady voltage plug provides power supply for remote control module.
The invention has the advantages that:
1, adopt the CPU modular design of redundancy in nitrogen system measuring and controlling of the present invention, avoid cpu fault to cause the observing and controlling failure;
2, adopt the Ethernet design of redundancy in nitrogen system measuring and controlling of the present invention, avoid too network failure to cause the observing and controlling failure;
3, adopt the host computer design of redundancy in 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 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 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 measurement and the control of 200 road signals in nitrogen system, the nitrogen system observing and controlling of complexity when namely meeting engine plume test and meeting 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 nitrogen system, and the synchronous signal antijamming capability is strong.
Description of drawings
Fig. 1 is nitrogen system measuring and controlling overall schematic of the present invention;
Fig. 2 is that nitrogen system measuring and controlling each several part structure of the present invention concerns block diagram with control.
In figure:
1-PLC programmable control module 2-remote control module 3-These field control modules 4-the first supply module
5-the second supply module 6-detection and control terminal 101-CPU module 102-analog input module
103-analog output module 104-digital quantity input module 105-digital output module 106-the first front connector
107-the 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-the second Ethernet
204-RS232 serial server 205-Remote data processing computing machine 206-printer
2011-first host computer 2012-second host computer 401-the first power distribution cabinet 402-stabilized voltage supply device
403-first ups power 4021-D.C. regulated power supply 4022-the first alternating current steady voltage plug
501-second power distribution cabinet 502-second AC voltage-stabilizing electricity 503-the second ups power 601-pressure transducer
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
The present invention is described in further detail below in conjunction with drawings and Examples.
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 arranged in switch board, and external remote control module 2, the first supply module 4 and the second supply module 5, as shown in Figure 1, operating personnel can carry out observing and controlling by 1 pair of detection and control terminal of These field control modules 3 control PLC programmable control module 6, also can carry out observing and controlling by 5 pairs of detection and control terminals of remote control module 6; The first supply module 4 and the second supply module 5 are used for respectively to PLC programmable control module 1 and remote control module 2 power supplies.Described detection and control terminal 6 is the various measurement and control instruments in 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 input module 102, analog output module 103, digital quantity input module 104, digital output module 105, the first front connector 106, the 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 input module 102 is connected with each pressure transducer 601, temperature sensor 602, flowmeter 603 and liquid level gauge 604 in detection and control terminal 6 by the first front connector 106, and is connected to CPU module 101; Analog output module 103 is connected with the diaphragm valve 605 in detection and control terminal 6 by the second front connector 107, and is connected to CPU module 101; Digital quantity input module 104 is connected with valve positioner 606 in detection and control terminal 6 by the 3rd front connector 108, and is connected to CPU module 101; Digital quantity input module 105 is connected with liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 in detection and control terminal 6 by the 4th front connector 109.
Described PLC power module 113 is used for as 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, the first Ethernet 202, the second Ethernet 203, RS232 serial server 204, Remote data processing computing machine 205, printer 206, is used for realizing Long-distance Control and the data processing of PLC programmable control module 1.Wherein, upper computer module 201 is comprised of the first host computer 2011 and the second host computer 2012, the first host computer 2011 and the second host computer 2012 backup each other, when the first host computer 2011 or the second host computer 2012 fault, the second host computer 2012 or the first host computer 2011 start automatically, avoid causing the observing and controlling failure because of the host computer fault.The first host computer 2011 and the second host computer 2012 all are connected to communication card 112 by the first Ethernet 202, the second Ethernet 203, the first Ethernet 202 and the second Ethernet 203 backup each other, avoid because the first Ethernet 202 or the second Ethernet 203 faults cause the observing and controlling failure, the first host computer 2011 or the second host computer 2012 can carry out data communication by the first Ethernet 202 or the second Ethernet 203 with CPU module 101 respectively thus; Remote data processing computing machine 205 1 ends are connected with the second Ethernet 203 with the first Ethernet 202 by RS232 serial server 204, avoid causing data to be processed unsuccessfully because of the first Ethernet 202 or the second Ethernet 203 faults; Remote data processing computing machine 205 other ends are connected to printer 206.
In said structure, analog input 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 detection and control terminal 6, carry out the A/D conversion, the analog measurement signal is converted to digital quantity measures signal data, transfer 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.
The digital quantity that CPU module 101 will receive is measured signal data, and (that is: in detection and control terminal 6, the digital quantity of each pressure transducer 601, temperature sensor 602, flowmeter 603 and liquid level gauge 604 is measured signal data, and the digital quantity of valve positioner 606 is measured signal data), send to These field control modules 3 by a MPI interface 110, show at the scene thus the on off state of each valve on control module 3.Simultaneously, the digital quantity that CPU module 101 also will receive is measured signal data by communication card 112, send to the first host computer 2011 or the second host computer 2012 through the first Ethernet 202 or the second Ethernet 203, by the first host computer 2011 or the second host computer 2012, show.Simultaneously, the digital quantity that CPU module 101 also will receive is measured signal data by communication card 112, send to Remote data processing computing machine 205 to store through the first Ethernet 202 or the second Ethernet 203 by RS232 serial server 204, analyze and control printer 206 and print.In above-mentioned control module at the scene 3 and the first host computer 2011 or the second host computer 2012, the on off state of each valve is shown with the different colours of valve symbol.
The aperture that also can realize the diaphragm valve 605 in detection and control terminal 6 in above-mentioned These field control modules 3 and the first host computer 2011 or the second host computer 2012 controls and the ON/OFF of liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 is controlled, and is specially:
when the aperture that adopts These field control modules 3 to carry out the diaphragm valve 605 in detection and control terminal 6 is controlled and liquid nitrogen pump 607, pneumatic stopping valve 608, when the ON/OFF of electric heater 609 is controlled, by setting the opening value of diaphragm valve 605 in control module 3 at the scene, send the discrete 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, the control signal of diaphragm valve 605 is converted to continuous simulating signal drives the regulation of diaphragm valve 5.Send the ON/OFF discrete control signal data of liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 to CPU module 101 through a MPI interface 110 by These field control modules 3, and through CPU module 101, send to digital output module 105, drive the ON/OFF of liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 by digital output module 105.In said process, the ON/OFF discrete control signal data of the discrete control signal of diaphragm valve 605 apertures that the CPU module also will receive and liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 sends to the first host computer 2011 or the second host computer 2012 by communication card 112 through the first Ethernet 202 or the second Ethernet 203, shows the open/close state of the aperture of diaphragm valves 5 and liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 by the first host computer 2011 or the second host computer 2012.Simultaneously, the ON/OFF discrete control signal data of the discrete control signal of diaphragm valve 605 apertures that the CPU module also will receive and liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 sends to Remote data processing computing machine 205 to store through the first Ethernet 202 or the second Ethernet 203 by RS232 serial server 204 by communication card 112, analyzes and controls printer 206 and print.
when the aperture that adopts the first host computer 2011 or the second host computer 2012 to carry out the diaphragm valve 605 in detection and control terminal 6 is controlled and liquid nitrogen pump 607, pneumatic stopping valve 608, when the ON/OFF of electric heater 609 is controlled, by set the opening value of diaphragm valve 605 in the first host computer 2011 or the second host computer 2012, sent the discrete control signal of diaphragm valve 605 apertures to the CPU module by communication card 112 through the first Ethernet 202 or the second Ethernet 203, and send to analog output module 103 through CPU module 101 and carry out D/A conversion, the control signal of diaphragm valve 605 is converted to continuous simulating signal drives the regulation of diaphragm valve 5.Sent the ON/OFF discrete control signal data of liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 by the first host computer 2011 or the second host computer 2012 to the CPU module by communication card 112 through the first Ethernet 202 or the second Ethernet 203, and through CPU module 101, send to digital output module 105, drive the ON/OFF of liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 by digital output module 105.In said process, the ON/OFF discrete control signal data of the discrete control signal of diaphragm valve 605 apertures that the CPU module also will receive and liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 sends to These field control modules 3 by communication card 112 through a MPI interface 110, shows the open/close state of the aperture of diaphragm valves 5 and liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 by These field control modules 3.The digital quantity that the ON/OFF discrete control signal data of the discrete control signal of diaphragm valve 605 apertures that above-mentioned the first host computer 2011 or the second host computer 2012 also will receive and liquid nitrogen pump 607, pneumatic stopping valve 608, electric heater 609 also will receive is measured signal data by through the first Ethernet 202 or the second Ethernet 203, by RS232 serial server 204, sending to Remote data processing computing machine 205 to store, and analyzes and controls printer 206 and print.
Thus when any digital data in the first host computer 2011 or the second host computer 2012 is lost, the data transmission that can will lose through the first Ethernet 202 or the second Ethernet 203 by Remote data processing computing machine 205 is to the first host computer 2011 or the second host computer 2012.
Described the first supply module 4 is used for comprising the first power distribution cabinet 401, stabilized voltage supply device 402 and the first ups power 403 into PLC power module 113 power supplies in PLC programmable control module 1; Wherein, the first power distribution cabinet 401 is stabilized voltage supply device 402 and the first ups power 403 power supplies; PLC power module 113 in stabilized voltage supply device 402 and PLC programmable control module 1 provides stablizes glitch-free power supply supply, comprises D.C. regulated power supply 4021 and the 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; The first alternating current steady voltage plug 4022 can provide stable Alternating Current Power Supply, the interference of avoiding city's electro-mechanical wave to cause; The first ups power 403 provides standby power supply for PLC power module 113, chargedly at ordinary times do not work, when the first power distribution cabinet 401 outage, in time start ups power 403, provide power supply by ups power 403 for stabilized voltage supply device 402, guarantee 113 normal operations of PLC power module.
The second supply module 5 is used for comprising the second power distribution cabinet 501, the second alternating current steady voltage plug 502 and the second ups power 503 into the remote control module power supply; Wherein, the second power distribution cabinet 501 provides power supply for the second alternating current steady voltage plug 502 and the second ups power 503; Wherein, the second alternating current steady voltage plug 502, for upper computer module 201 provides power supply, guarantees its normal operation; The second ups power 503 is standby power supply, chargedly at ordinary times do not work, when the second power distribution cabinet 501 outage, in time start the second ups power 503, provide power supply by the second ups power 503 for the second alternating current steady voltage plug 502, guarantee upper computer module 201 normal operations.
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, the first supply module and the second supply module;
Described PLC Programmable Logic Controller module comprises CPU module, analog input module, analog output module, digital quantity input module, digital output module, the first front connector, the 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 input module is taken into account liquid level gauge by the first front connector with each pressure transducer, temperature sensor, flow in nitrogen system and is connected, and is connected to the CPU module; Analog output module is connected with the diaphragm valve in nitrogen system by the second front connector, and is connected to the CPU module; Digital quantity input module is connected with valve positioner in nitrogen system by the 3rd front connector, and is connected to the CPU module; The digital output module is connected with liquid nitrogen pump, pneumatic stopping valve, electric heater in nitrogen system by the 4th front connector;
The CPU module is connected with These field control modules by a MPI interface, realizes the real-time Communication for Power between PLC programmable control module and These field control modules; The CPU module also is connected with communication card by the 2nd MPI interface, by communication card, realizes real-time Communication for Power between PLC programmable control module and remote control module;
The PLC power module is used for as 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, Remote data processing computing machine, printer; Wherein, upper computer module is connected to communication card by Ethernet; Remote data processing computing machine one end is connected with Ethernet by the RS232 serial server; The Remote data processing computing machine other end is connected to printer;
In said structure, the analog input module is used for obtaining each pressure transducer, temperature sensor, flow in nitrogen system and takes into account the analog measurement signal of liquid level gauge, carry out the A/D conversion, the analog measurement signal is converted to digital quantity measures signal data, transfer 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;
Digital quantity that the CPU module will receive is measured signal data, by a MPI interface, sends to These field control modules, shows at the scene thus the on off state of each valve on control module; Simultaneously, the digital quantity that the CPU module also will receive is measured signal data by communication card, through Ethernet, sends to upper computer module, by upper computer module, shows; Simultaneously, the digital quantity that the CPU module also will receive is measured signal data by communication card, through Ethernet, by the RS232 serial server, sends to the Remote data processing computing machine to store, and analyzes and controls printer and print;
Also can realize in above-mentioned These field control modules and upper computer module that the ON/OFF of the aperture control of the diaphragm valve in nitrogen system and liquid nitrogen pump, pneumatic stopping valve, electric heater controls, be specially:
When the ON/OFF that adopts These field control modules to carry out the aperture control of the diaphragm valve in detection and control terminal and liquid nitrogen pump, pneumatic stopping valve, electric heater is controlled, by setting the opening value of diaphragm valve in control module at the scene, send the discrete 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, the control signal of diaphragm valve is converted to continuous simulating signal drives the regulation of diaphragm valve; Send the ON/OFF discrete control signal data of liquid nitrogen pump, pneumatic stopping valve, electric heater to the CPU module through a MPI interface by These field control modules, and through the CPU module, send to the digital output module, drive the ON/OFF of liquid nitrogen pump, pneumatic stopping valve, electric heater by the digital output module; In said process, the ON/OFF discrete control signal data of the discrete control signal of the diaphragm valve aperture that the CPU module also will receive and liquid nitrogen pump, pneumatic stopping valve, electric heater sends to upper computer module by communication card through Ethernet, shows the open/close state of the aperture of diaphragm valve and liquid nitrogen pump, pneumatic stopping valve, electric heater by upper computer module; Simultaneously, the ON/OFF discrete control signal data of the discrete control signal of the diaphragm valve aperture that the CPU module also will receive and liquid nitrogen pump, pneumatic stopping valve, electric heater sends to Remote data processing computing machine to store through Ethernet by the RS232 serial server by communication card, analyzes and controls printer and print;
When the ON/OFF that adopts upper computer module to carry out the aperture control of the diaphragm valve in detection and control terminal and liquid nitrogen pump, pneumatic stopping valve, electric heater is controlled, by set the opening value of diaphragm valve in upper computer module, sent the discrete 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, the control signal of diaphragm valve is converted to continuous simulating signal drives the regulation of diaphragm valve; Sent the ON/OFF discrete control signal data of liquid nitrogen pump, pneumatic stopping valve, electric heater to the CPU module by communication card through Ethernet by upper computer module, and through the CPU module, send to the digital output module, drive the ON/OFF of liquid nitrogen pump, pneumatic stopping valve, electric heater by the digital output module; In said process, the ON/OFF discrete control signal data of the discrete control signal of the diaphragm valve aperture that the CPU module also will receive and liquid nitrogen pump, pneumatic stopping valve, electric heater sends to These field control modules by communication card through a MPI interface, shows the open/close state of the aperture of diaphragm valve and liquid nitrogen pump, pneumatic stopping valve, electric heater by These field control modules; The digital quantity that the ON/OFF discrete control signal data of the discrete control signal of the diaphragm valve aperture that above-mentioned upper computer module also will receive and liquid nitrogen pump, pneumatic stopping valve, electric heater also will receive is measured signal data by through Ethernet, by the RS232 serial server, sending to the Remote data processing computing machine to store, and analyzes and controls printer and print;
Described the first supply module comprises the first power distribution cabinet and stabilized voltage supply device; Wherein, the first power distribution cabinet provides power supply for stabilized voltage supply device; Stabilized voltage supply device, for the PLC power module in the PLC programmable control module provides power supply, comprises D.C. regulated power supply and the 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; The first alternating current steady voltage plug is used to provide stable Alternating Current Power Supply;
The second supply module comprises the second power distribution cabinet and the second alternating current steady voltage plug; Wherein, the second power distribution cabinet provides power supply for the second alternating current steady voltage plug; The second alternating current steady voltage plug provides power supply for remote control module.
2. nitrogen system measuring and controlling as claimed in claim 1, it is characterized in that: described CPU module is comprised 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, it is characterized in that: described upper computer module comprises the first host computer and the second host computer, the first host computer and the second host computer backup each other; Ethernet comprises the first Ethernet and the second Ethernet, and the first Ethernet and the second Ethernet backup each other; The first host computer and the second host computer all are connected to communication card by the first Ethernet, the second Ethernet; The first Ethernet all is connected with the Remote data processing computing machine by the RS232 serial server with the second Ethernet.
4. nitrogen system measuring and controlling as claimed in claim 1, it is characterized in that: described the first supply module also comprises the first ups power; Be a UPS charging by the first power distribution cabinet, when the first power distribution cabinet outage, by a UPS, for stabilized voltage supply device, provide power supply.
5. nitrogen system measuring and controlling as claimed in claim 1, it is characterized in that: described the second supply module also comprises the second ups power, be the second ups power charging by the second power distribution cabinet, when the second power distribution cabinet outage, by the second ups power, for the second alternating current steady voltage plug, provide power supply.
6. nitrogen system measuring and controlling as claimed in claim 1 is characterized in that: described These field control modules is the touch control screen.
7. nitrogen system measuring and controlling as claimed in claim 1, is characterized in that: described communication card employing 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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| 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 |
| 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 |
| CN112180901B (en) * | 2020-10-14 | 2022-02-11 | 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 |
| CN112856218B (en) * | 2020-12-25 | 2022-09-23 | 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5713724A (en) * | 1994-11-23 | 1998-02-03 | Coltec Industries Inc. | System and methods for controlling rotary screw compressors |
| FI114507B (en) * | 2000-07-07 | 2004-10-29 | Metso Automation Oy | System for diagnostics of a device |
| 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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