CN102184272B - Virtual measuring and controlling system - Google Patents
Virtual measuring and controlling system Download PDFInfo
- Publication number
- CN102184272B CN102184272B CN2011100312438A CN201110031243A CN102184272B CN 102184272 B CN102184272 B CN 102184272B CN 2011100312438 A CN2011100312438 A CN 2011100312438A CN 201110031243 A CN201110031243 A CN 201110031243A CN 102184272 B CN102184272 B CN 102184272B
- Authority
- CN
- China
- Prior art keywords
- circuit
- links
- signal
- resistance
- virtual
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention relates to a virtual measuring and controlling system, and aims to provide a practical virtual measuring and controlling system with a low-cost signal acquisition module. The system comprises an interface circuit and virtual simulation equipment, wherein the virtual simulation equipment is connected with a system to be measured and controlled through the interface circuit; and the interface circuit comprises a processor, an analog-digital (AD) conversion circuit, a duty ratio measuring circuit, an input amplifying and adjusting circuit, a T-shaped conversion circuit, a 24-bit AD conversion circuit, an output amplifying and adjusting circuit, a digital-analog conversion circuit, a switch conversion circuit, a communication interface and a terminal. The invention provides the system for performing system debugging by using virtual equipment without expensive controlled equipment, so that a debugging process is simple and practical and the efficiency of product development is increased; and a PWM (Pulse Width Modulation) signal, an analog quantity signal and a switch signal can be processed in the signal acquisition circuit, I/O (Input/Output) interfaces of the processor are reduced, the system has a simple structure, and equipment cost is reduced.
Description
Technical field
The present invention relates to the computer virtual field tests, in particular, the invention relates to a kind of virtual measuring and controling system of control system virtual detection and control.
Background technology
Observing and controlling electronic product exploitation general flow: conceptual design → hardware designs → software design → system debug → technological document is write.Wherein system debug is one of key link of observing and controlling product development.Usually need object in kind to debug in debug process; Exploitation like controller for electric vehicle; Need the place, battery etc. of electric motor car, electric motor car operation just can debug, the temperature Control of Electric Heater system needs electric furnace, AC power etc. just can debug, owing to when debugging, influenced by the service condition of equipment; Debug process is very loaded down with trivial details, and causes damage easily to some equipment debugging is improper.
Patent Office of the People's Republic of China discloses a CN101749302A document on June 23rd, 2010; Name is called a kind of hydraulically operated equipment (HOE) on-line virtual testing analysis system; This system utilizes computer platform to set up; It comprises: acquisition module, and it utilizes PXIe acquisition platform, SCXI Platform for Signal Condition and CDAQ portable data acquisition platform image data; Administration module, it comprises a data ADMINISTRATION SUBSYSTEM; Reporting modules, it will show with word form mode to the test findings that object is done; Analysis module, it comprise one with data test partly adopt the waveform result carry out the eigenwert collection, the analyzing subsystem that the result of needs is extracted.The shortcoming of this system is that signal acquisition module is made up of PXIe acquisition platform, SCXI Platform for Signal Condition and CDAQ portable data acquisition platform, complex structure, and cost is high.
Summary of the invention
The present invention provides a kind of virtual measuring and controling system with practicality of low-cost signal acquisition module for solving the high shortcoming of the complicated cost of signal acquisition structure that exists in the prior art.
The technical solution adopted for the present invention to solve the technical problems is: the present invention includes interface circuit and virtual emulation equipment; Virtual emulation equipment links to each other with tested control system through interface circuit; Interface circuit comprises processor, analog to digital conversion circuit, duty ratio measuring circuit, input amplification adjustment circuit, T type change-over circuit, 24 A/D convertor circuits, output amplification adjustment circuit, D/A converting circuit, switching value change-over circuit, communication interface and terminals; The signal output part of tested control system amplifies the input end of adjusting circuit, T type change-over circuit with duty ratio measuring circuit, input respectively through terminal and links to each other; The output terminal that the adjustment circuit is amplified in duty ratio measuring circuit, input links to each other with the input end of analog to digital conversion circuit; The output terminal of analog to digital conversion circuit links to each other with the input end of processor; The output terminal of T type change-over circuit links to each other with the input end of 24 A/D convertor circuits; The output terminal of 24 A/D convertor circuits links to each other with the input end of processor; The output terminal of processor links to each other with the input end of D/A converting circuit, switching value change-over circuit respectively, and the output terminal of D/A converting circuit links to each other with the input end that the adjustment circuit is amplified in output, and the output terminal of adjustment circuit is amplified in output and the output terminal of switching value change-over circuit links to each other with the input end of tested control system through terminal respectively; Processor links to each other with virtual emulation equipment through communication interface;
Emulator comprises PC and 3D virtual software, in PC, sets virtual objects by the 3D virtual software;
The duty ratio measuring circuit is used for the analog quantity voltage signal of conversion of signals for become related function to concern with the dutycycle of pwm signal with the PWM type of tested control system output; This analog quantity voltage signal is handled through the analog to digital conversion circuit sending processor, and delivers to PC through communication interface virtual objects is controlled;
Input is amplified the adjustment circuit and is used for converting the voltage or the current analog signal of tested control system output to the analog quantity voltage signal; This analog quantity voltage signal is handled through the analog to digital conversion circuit sending processor, and delivers to PC through communication interface virtual objects is controlled;
The multi-way switch amount conversion of signals that T type change-over circuit is used for tested control system output is a simulating signal; Convert digital signal into through 24 A/D convertor circuits; This digital signal sending processor is handled, and delivers to PC through communication interface virtual objects is controlled;
The data-signal of virtual objects output is through the communication interface of interface processor, and treated device is delivered to D/A converting circuit and delivered to output amplification adjustment circuit output simulating signal to tested control system, and this signal also can be used as the virtual sensing signal of virtual objects;
The digital signal of virtual objects output is through communication interface, and the I/O mouth of treated device is isolated output, changes through output conversion circuit, delivers to the on off state output of tested control system as virtual unit.Signal between tested control system and the processor is divided into pwm signal, simulating signal and switching value signal; The pwm signal of tested control system output is converted into and the proportional simulating signal of pwm signal dutycycle through the duty ratio measuring circuit; Simulating signal is handled through the analog to digital conversion sending processor, and controls through the virtual objects that communication interface is delivered to PC; The simulating signal of tested control system output links through level conversion and analog to digital conversion circuit and processor; The multi-way switch amount control signal of tested control system output becomes simulating signal through T type change-over circuit; Send the conversion of 24 bit A/D converters, and deliver to the virtual objects of PC through communication interface; Communication interface that interface circuit is inner and the virtual unit exchange message on the PC, virtual unit moves or provides corresponding signal to tested control system according to the signal of tested control system.
As preferably, the duty ratio measuring circuit comprises the voltage-controlled low pass active filter circuit of holding circuit, current rectifying and wave filtering circuit and single supply; Holding circuit is made up of diode D1; Current rectifying and wave filtering circuit is made up of diode D2, capacitor C 1, resistance R 1; The PWM input signal; Send diode D2, capacitor C 1 and resistance R 1 to carry out rectifying and wave-filtering through the D1 pressure limiting, export the direct current signal of 0-5V then through the voltage-controlled low pass active filter circuit of the single supply of forming by resistance R 2, R3, R4, R5, capacitor C 2, C3 and operational amplifier A 1.The duty ratio measuring circuit is made up of the voltage-controlled low pass active filter circuit of holding circuit, current rectifying and wave filtering circuit and single supply; The PWM input signal of 1-30V send diode D, capacitor C 1 to carry out rectifying and wave-filtering through the D1 pressure limiting, and the voltage-controlled low pass active filter circuit of forming through R2, R3, R4, R5, C2, C3 and operational amplifier A 1 then of single supply is exported the direct current signal of 0-5V.
As preferably, import amplification adjustment circuit and convert 0-24V voltage signal and 0-20mA current signal into the 0-5V voltage signal.Input is amplified the adjustment circuit and is had automatic gain adjustment function, the simulating signal that converts voltage signal and the 0-20mA current signal of 0-24V into 0-5V.
As preferably; T type change-over circuit comprises several T type circuit, operational amplifier A 30, resistance R 30 and diode D21; T type circuit comprises resistance R 20, R21, R22, diode D20, triode Q20, and wherein the resistance of the said resistance R 20 of the resistance value ratio of resistance R 21 is twice; One end of resistance R 20 links to each other with an end of resistance R 21; The other end of resistance R 21 links to each other with the positive pole of diode D20, the collector of triode Q20 respectively; The emitter of triode Q20 links to each other with ground, and the base stage of triode Q20 links to each other with tested control system as signal input part through resistance R 22; When T type circuit connects; The other end of the resistance R 20 of the said T type of first via circuit links to each other with positive source; Resistance R 20 in the other end and front one road T type circuit of the resistance R 20 of each road T type circuit of back and the tie point of R21 are connected, and the resistance R 20 of last road T type circuit links to each other with ground through diode D21; The negative pole of the diode D20 of each road T type circuit links together and links to each other with the input cathode of said operational amplifier A 30; The input anode of operational amplifier A 30 links to each other with ground; One end of resistance R 30 links to each other with the input cathode of operational amplifier A 30, and the other end of resistance R 30 links to each other with the output terminal of operational amplifier A 30.The switching value signal of tested control system links to each other with the base stage of the triode Q20 of one road T type circuit through resistance R 22 respectively, controls the break-make of the triode Q1 on this road respectively; When the signal input part in the T on a certain road type circuit is high level, the triode Q20 conducting of this road, diode D20 is static, and this road T type circuit does not have signal output; When the signal input part of this T type circuit was low level, triode Q2O ended, and the diode D2O conducting of this road is sent to output terminal with the magnitude of voltage on the triode Q20 collector of this road; Because the voltage when each road T type circuit ends at this road triode Q20 on its collector is different; Therefore the voltage added value to output terminal also has nothing in common with each other; Because; The resistance of the resistance value ratio resistance R 20 of resistance R 21 is twice, so the output voltage of each road T type circuit launches the added value weight by a certain percentage of output end voltage; The diode D20 on each road guarantees the unidirectional conducting of signal, and diode D21 plays equilibrium activity; Operational amplifier A 30 is amplified the output signal of each road T type circuit; The advantage of T type change-over circuit is can reduce tested control system to the signal delay between virtual unit; Can guarantee the synchronous output of each switching value signal, the control virtual objects; Thereby the detection that can cascade expands to 24 path switching signals reduces the I/O mouth quantity of processor.
As preferably, 24 A/D convertor circuits are LTC2400 chips.The LTC2400 chip adopts delta sigma structure, three-wire system SPI interface, has that volume is little, slewing rate is fast, the simple advantage of wiring.
As preferably, communication interface comprises the RS232 serial ports.The RS232 serial ports has easy-to-connect, the advantage that communication speed is fast.
As preferably, communication interface comprises USB interface.USB interface has plug and play advantage easy to use.
The invention has the beneficial effects as follows: a kind of system that adopts virtual unit to carry out system debug is provided, has not needed expensive controlled device, made debug process simple, improved the efficient of product development; In the teaching of university's electrical type specialty, adopt virtual unit to debug, have bigger advantage, can reduce the input of experimental facilities, reduce the management and the maintenance cost of equipment; In signal acquisition circuit, can handle, and reduce the I/O interface of processor pwm signal, analog signals, switching value signal, simple in structure, reduced equipment cost.
Description of drawings
Fig. 1 is a kind of system chart of virtual measuring and controling system of the present invention;
Fig. 2 is a kind of block diagram of interface circuit;
Fig. 3 is a kind of schematic diagram of duty ratio measuring circuit;
Fig. 4 is a kind of schematic diagram of T type circuit;
Fig. 5 is a kind of schematic diagram of T type change-over circuit.
Among the figure: 1. virtual measuring and controling system, 2. interface circuit, 3. virtual emulation equipment, 4. tested control system; 5. processor, 6. terminal, 7. duty ratio measuring circuit, 8. analog to digital conversion circuit; 9. the adjustment circuit is amplified in input, 10.T type change-over circuit, and 11.24 A/D convertor circuits, the adjustment circuit is amplified in 12. outputs; 13. D/A converting circuit, 14. switching value change-over circuits, 15. communication interfaces.
Embodiment
Pass through specific embodiment below, and combine accompanying drawing to do further bright specifically technical scheme of the present invention.
Embodiment:
A kind of virtual measuring and controling system of present embodiment; Referring to Fig. 1; Form virtual measuring and controling system 1 by interface circuit 2 and virtual emulation equipment 3; One end of interface circuit 2 links to each other with tested control system 4, and the other end of interface circuit 2 links to each other with virtual emulation equipment 3, and virtual emulation equipment 3 comprises PC and 3D virtual software.
Referring to Fig. 2, interface circuit 2 comprises processor 5, analog to digital conversion circuit 8, duty ratio measuring circuit 7, input amplification adjustment circuit 9,10,24 A/D convertor circuits 11 of T type change-over circuit, output amplification adjustment circuit 12, D/A converting circuit 13, switching value change-over circuit 14, communication interface 15 and terminal 6; The signal output part of tested control system 4 amplifies the input end of adjusting circuit 9, T type change-over circuit 10 with duty ratio measuring circuit 7, input respectively through terminal 6 and links to each other; The output terminal that adjustment circuit 9 is amplified in duty ratio measuring circuit 7, input links to each other with the input end of analog to digital conversion circuit 8; The output terminal of analog to digital conversion circuit 8 links to each other with the input end of processor 5; The output terminal of T type change-over circuit 10 links to each other with the input end of 24 A/D convertor circuits 11; The output terminal of 24 A/D convertor circuits 11 links to each other with the input end of processor 5; The output terminal of processor 5 links to each other with the input end of D/A converting circuit 13, switching value change-over circuit 14 respectively; The output terminal of D/A converting circuit 13 links to each other with the input end that adjustment circuit 12 is amplified in output, and the output terminal of adjustment circuit 12 is amplified in output and the output terminal of switching value change-over circuit 14 links to each other with the input end of tested control system 4 through terminal 6 respectively; Processor 5 links to each other with virtual emulation equipment 3 through communication interface 15.
Referring to Fig. 3, duty ratio measuring circuit 7 comprises the voltage-controlled low pass active filter circuit of holding circuit, current rectifying and wave filtering circuit and single supply; Holding circuit is made up of diode D1, and current rectifying and wave filtering circuit is made up of diode D2, capacitor C 1, resistance R 1, and the voltage-controlled low pass active filter circuit of single supply is made up of resistance R 2, R3, R4, R5, capacitor C 2, C3 and operational amplifier A 1.
Referring to Fig. 4, T type circuit comprises resistance R 20, R21, R22, diode D20, triode Q20, and wherein the resistance of the said resistance R 20 of the resistance value ratio of resistance R 21 is twice; One end of resistance R 20 links to each other with an end of resistance R 21; The other end of resistance R 21 links to each other with the positive pole of diode D20, the collector of triode Q20 respectively; The emitter of triode Q20 links to each other with ground, and the base stage of triode Q20 links to each other with tested control system 4 as signal input part through said resistance R 22.
Referring to Fig. 5; T type change-over circuit 10 is made up of 16 road T type circuit, operational amplifier A 30, resistance R 30 and diode D21; One end of the resistance R 20 of first via T type circuit links to each other with positive source; Resistance R 20 in one end and front one road T type circuit of the resistance R 20 of each road T type circuit of back and the tie point of R21 are connected, and the resistance R 20 of last road T type circuit links to each other with ground through diode D21; The negative pole of the diode D20 of each road T type circuit links together and links to each other with the input cathode of said operational amplifier A 30; The input anode of operational amplifier A 30 links to each other with ground; One end of resistance R 30 links to each other with the input cathode of operational amplifier A 30, and the other end of resistance R 30 links to each other with the output terminal of operational amplifier A 30.
24 A/D convertor circuits 11 are made up of the LTC2400 chip.
Operational amplifier A 1 is selected the Op07 chip for use with A30, and Op07 is a low noise, and the bipolarity operational amplifier integrated circuit of non-chopper-zero-stabilized has low-down input offset voltage, and the characteristics of low input bias current and high open-loop gain guarantee precision of signal conversion.
Signal between tested control system 4 and the interface circuit 2 is divided into pwm signal, analog signals and switching value signal; Pwm signal is converted into and the proportional simulating signal of pwm signal dutycycle by duty ratio measuring circuit 7; Convert digital signal into through analog to digital conversion circuit 8 again, be sent to processor 5 and handle; The analog signals of tested control system 4 amplifies adjustment circuit 9 by input and carries out the level adjustment; Convert 0-24V voltage signal and 0-20mA current signal into the 0-5V voltage signal; Convert digital signal into through analog to digital conversion circuit 8 again, be sent to processor 5 and handle; The switching value signal of tested control system 4 converts the voltage signal by the power addition into through T type change-over circuit 10, converts digital quantity signal into by 24 A/D convertor circuits 11 again, is sent to processor 5 and handles.
The signal that interface circuit 2 outputs to tested control system 4 is divided into analog signals and switching value signal; Analog signals is converted into the voltage analog signal of 0-5V through D/A converting circuit 13 by the digital quantity signal of processor 5 outputs; Amplify adjustment circuit 12 by output again and carry out the level adjustment; Convert 0-24V voltage signal and 0-20mA current signal into, as the control signal or the feedback signal of tested control system 4; The switching value signal of processor 5 outputs is active signals of 5V, converts passive switch amount signal into by switching value change-over circuit 14, is transported to control signal and the status signal of tested control system 4 as virtual emulation equipment 3.
The communication interface 15 of interface circuit 2 inside and the PC exchange message in the virtual emulation equipment 3, PC is equipped with the 3D virtual software, in PC, sets the virtual objects corresponding to tested control system 4 by the 3D virtual software; Virtual objects moves or provides corresponding signal to tested control system 4 according to the signal of tested control system 4.
Above embodiment is one of preferred plan of the present invention, is not that the present invention is done any pro forma restriction, under the prerequisite that does not exceed the technical scheme that claim puts down in writing, also has other variant and remodeling.
Claims (8)
1. virtual measuring and controling system; Comprise interface circuit and virtual emulation equipment; Said virtual emulation equipment links to each other with tested control system through said interface circuit; It is characterized in that: said interface circuit comprises processor, analog to digital conversion circuit, duty ratio measuring circuit, input amplification adjustment circuit, T type change-over circuit, 24 A/D convertor circuits, output amplification adjustment circuit, D/A converting circuit, switching value change-over circuit, communication interface and terminals; The signal output part of said tested control system amplifies the input end of adjusting circuit, T type change-over circuit with said duty ratio measuring circuit, input respectively through said terminal and links to each other; The output terminal that the adjustment circuit is amplified in said duty ratio measuring circuit, input links to each other with the input end of analog-digital conversion circuit as described; The output terminal of analog-digital conversion circuit as described links to each other with the input end of said processor; The output terminal of said T type change-over circuit links to each other with the input end of said 24 A/D convertor circuits; The output terminal of said 24 A/D convertor circuits links to each other with the input end of said processor; The output terminal of said processor links to each other with the input end of said D/A converting circuit, switching value change-over circuit respectively, and the output terminal of said D/A converting circuit links to each other with the input end that the adjustment circuit is amplified in said output, and the output terminal of adjustment circuit is amplified in said output and the output terminal of said switching value change-over circuit links to each other with the input end of said tested control system through said terminal respectively; Said processor links to each other with said virtual emulation equipment through said communication interface;
Said emulator comprises PC and 3D virtual software, in said PC, sets virtual objects by said 3D virtual software;
Said duty ratio measuring circuit is used for the analog quantity voltage signal of conversion of signals for become related function to concern with the dutycycle of said pwm signal with the PWM type of said tested control system output; This analog quantity voltage signal send said processor processes through analog-digital conversion circuit as described, and delivers to said PC through said communication interface said virtual objects is controlled;
Said input is amplified the adjustment circuit and is used for converting the voltage or the current analog signal of said tested control system output to the analog quantity voltage signal; This analog quantity voltage signal send said processor processes through analog-digital conversion circuit as described, and delivers to said PC through said communication interface said virtual objects is controlled;
The multi-way switch amount conversion of signals that said T type change-over circuit is used for said tested control system output is a simulating signal; Convert digital signal into through said 24 A/D convertor circuits; This digital signal is sent said processor processes, and delivers to said PC through said communication interface said virtual objects is controlled;
The data-signal of said virtual objects output is through the communication interface of interface processor; Deliver to D/A converting circuit through said processor and deliver to output amplification adjustment circuit output simulating signal to said tested control system, this signal is as the virtual sensing signal of said virtual objects;
The digital signal of said virtual objects output is isolated output through said communication interface through the I/O of said processor mouth, changes through said output conversion circuit, delivers to the on off state output of said tested control system as said virtual unit.
2. a kind of virtual measuring and controling system according to claim 1 is characterized in that: said duty ratio measuring circuit comprises the voltage-controlled low pass active filter circuit of holding circuit, current rectifying and wave filtering circuit and single supply; Said holding circuit is made up of diode D1; Said current rectifying and wave filtering circuit is made up of diode D2, capacitor C 1, resistance R 1; Said PWM input signal; Send diode D2, capacitor C 1 and resistance R 1 to carry out rectifying and wave-filtering through the D1 pressure limiting, export the direct current signal of 0-5V then through the voltage-controlled low pass active filter circuit of the said single supply of forming by resistance R 2, R3, R4, R5, capacitor C 2, C3 and operational amplifier A 1.
3. a kind of virtual measuring and controling system according to claim 1 and 2 is characterized in that: said input is amplified the adjustment circuit and is converted 0-24V voltage signal and 0-20mA current signal into the 0-5V voltage signal.
4. a kind of virtual measuring and controling system according to claim 1 and 2; It is characterized in that: said T type change-over circuit comprises several T type circuit, operational amplifier A 30, resistance R 30 and diode D21; Said T type circuit comprises resistance R 20, R21, R22, diode D20, triode Q20, and the resistance of the said resistance R 20 of the resistance value ratio of wherein said resistance R 21 is twice; One end of said resistance R 20 links to each other with an end of said resistance R 21; The other end of resistance R 21 links to each other with the positive pole of said diode D20, the collector of said triode Q20 respectively; The emitter of said triode Q20 links to each other with ground, and the base stage of said triode Q20 links to each other with said tested control system as signal input part through said resistance R 22; When T type circuit connects; The other end of the resistance R 20 of the said T type of first via circuit links to each other with positive source; Resistance R 20 in the other end and front one road T type circuit of the resistance R 20 of each road T type circuit of back and the tie point of R21 are connected, and the resistance R 20 of last road T type circuit links to each other with ground through said diode D21; The negative pole of the diode D20 of each road T type circuit links together and links to each other with the input cathode of said operational amplifier A 30; The input anode of said operational amplifier A 30 links to each other with ground; One end of said resistance R 30 links to each other with the input cathode of said operational amplifier A 30, and the other end of said resistance R 30 links to each other with the output terminal of said operational amplifier A 30.
5. a kind of virtual measuring and controling system according to claim 4 is characterized in that: said 24 A/D convertor circuits are LTC2400 chips.
6. a kind of virtual measuring and controling system according to claim 1 and 2 is characterized in that: said 24 A/D convertor circuits are LTC2400 chips.
7. a kind of virtual measuring and controling system according to claim 1 and 2 is characterized in that: said communication interface comprises the RS232 serial ports.
8. a kind of virtual measuring and controling system according to claim 1 and 2 is characterized in that: said communication interface comprises USB interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100312438A CN102184272B (en) | 2011-01-28 | 2011-01-28 | Virtual measuring and controlling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100312438A CN102184272B (en) | 2011-01-28 | 2011-01-28 | Virtual measuring and controlling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102184272A CN102184272A (en) | 2011-09-14 |
| CN102184272B true CN102184272B (en) | 2012-11-14 |
Family
ID=44570449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100312438A Expired - Fee Related CN102184272B (en) | 2011-01-28 | 2011-01-28 | Virtual measuring and controlling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102184272B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103761207B (en) * | 2013-06-25 | 2016-08-10 | 严俊 | A kind of 3D virtual unit TT&C system |
| CN105068443B (en) * | 2015-07-03 | 2018-08-14 | 复旦大学 | A kind of design method of safe interface device for HWIL simulation |
| CN105676738B (en) * | 2016-02-24 | 2019-01-01 | 北京百度网讯科技有限公司 | The data analog system of monitored object, monitoring system and method |
| CN109032865A (en) * | 2018-07-20 | 2018-12-18 | 北京遥感设备研究所 | A kind of data isolation storage reproduction equipment and method |
| CN109493700A (en) * | 2018-12-06 | 2019-03-19 | 上海图菱新能源科技有限公司 | Operational amplifier test macro for Remote Virtual Experiments |
| CN110568791B (en) * | 2019-09-02 | 2024-02-20 | 成都英萨传感技术研究有限公司 | Multi-output integrated proximity switch |
| CN114812915B (en) * | 2022-06-24 | 2022-10-18 | 中国空气动力研究与发展中心低速空气动力研究所 | Pressure scanning valve circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101329812A (en) * | 2008-07-24 | 2008-12-24 | 东南大学 | Multi-channel and high-accuracy data acquisition unit |
| CN201303308Y (en) * | 2008-11-19 | 2009-09-02 | 湖南大学 | Dynamic simulation device for prime mover system of electric generator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3897598B2 (en) * | 2002-01-10 | 2007-03-28 | 松下電器産業株式会社 | Inverter control semiconductor device |
-
2011
- 2011-01-28 CN CN2011100312438A patent/CN102184272B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101329812A (en) * | 2008-07-24 | 2008-12-24 | 东南大学 | Multi-channel and high-accuracy data acquisition unit |
| CN201303308Y (en) * | 2008-11-19 | 2009-09-02 | 湖南大学 | Dynamic simulation device for prime mover system of electric generator |
Non-Patent Citations (2)
| Title |
|---|
| 雷轶鸣等.基于虚拟仪器的稳定电源测控系统.《计算机与现代化》.2008,(第6期),第43-47页. * |
| 黄大星等.虚拟仪器技术在现代测控系统中的应用.《农机化研究》.2006,(第8期),第184-185页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102184272A (en) | 2011-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102184272B (en) | Virtual measuring and controlling system | |
| CN203551134U (en) | Multipath analog quantity industrial acquisition device | |
| CN102156263A (en) | Excitation system simulation test device for synchronous generator | |
| CN203291702U (en) | Soft measurement device of flue gas denitration efficiency | |
| CN202710653U (en) | Digital isolation sampling circuit of high common mode voltage analog signals | |
| CN109375526A (en) | A kind of numerical model analysis simulation test platform | |
| CN202049354U (en) | Virtual measurement and control system | |
| CN211697923U (en) | High-precision constant-resistance analog load adjusted through program-controlled digital potentiometer | |
| CN202049353U (en) | Virtual measurement and control system for electric car | |
| CN202048977U (en) | Virtual measurement and control system of electronic scale | |
| CN207297240U (en) | A kind of braking resistor resistance value and temperature on-line monitoring device | |
| CN216312945U (en) | Programmable AC/DC power supply | |
| CN203012108U (en) | Automatic calibration and verification apparatus for battery pack | |
| CN201763328U (en) | Compensation neutron logger | |
| CN204514497U (en) | A kind of high-precision temperature testing circuit | |
| CN106291065A (en) | A kind of voltage sample circuit | |
| CN206489254U (en) | A kind of test circuit of isolated amplifier gain accuracy | |
| CN207351944U (en) | A kind of hydrazine gas monitor | |
| CN209149102U (en) | A kind of chromacoder for the emulation of electricity net safety stable control strategy | |
| CN113224810A (en) | Voltage acquisition device with hardware protection function for rail transit | |
| CN206505122U (en) | A kind of isolation voltage sample circuit | |
| CN102081152A (en) | Calibration device and method for out-of-band accessory direct-current electric energy meter | |
| CN206074674U (en) | A kind of voltage sample circuit | |
| CN201945880U (en) | Serialized general digital transmitting system based on field bus | |
| CN206056770U (en) | Check valve acoustic emission signal acquisition 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20150128 |
|
| EXPY | Termination of patent right or utility model |