CN101738487A - Virtual instrument technology-based motor experimental system scheme - Google Patents
Virtual instrument technology-based motor experimental system scheme Download PDFInfo
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- CN101738487A CN101738487A CN200810202768A CN200810202768A CN101738487A CN 101738487 A CN101738487 A CN 101738487A CN 200810202768 A CN200810202768 A CN 200810202768A CN 200810202768 A CN200810202768 A CN 200810202768A CN 101738487 A CN101738487 A CN 101738487A
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Abstract
The invention relates to a scheme and a device, which realize the acquisition of rotation speed signals of a tested motor through a sensor, set the rotation speed signals to be in an identification range of a signal conditioning circuit, after conditioning the signals, transmit the signals into a computer through a data acquisition card, finish processing data through virtual instrument software in the computer, display digital values of a rotation speed, torque and output power obtained through analysis processing on a friendly human-computer interface of the computer and simultaneously record the digital values in corresponding files. The scheme and the device have the following advantages that: experimental conditions for direct current machine testing in the prior art are improved; the whole scheme has good repeatability and avoids personal errors; the device applying the scheme realizes the integration of experimental instruments, so that the integration cost of experimental and testing equipment is remarkably reduced and steps are remarkably reduced; and through proper extension, the scheme and the device can be widely applied to the experiment teaching of other subjects, and can realize the experiment teaching and scientific research of a network and greatly improve the practical efficiency of experimental environments.
Description
Technical field
The present invention relates to the virtual instrument technique field, particularly relate to experiment motor performance test.
Background technology
Since (the National Instruments of American National instrument company, NI) notion in proposition virtual instrument in 1986 begins, " software is exactly instrument " is applied to rapidly in Engineering Control, scientific measurement and the experimental teaching for virtual instrument technique feature, that modern instrument technology and computer technology combine, by measurement, the control function of software realization instrument, finish demonstration, storage and analyzing and processing to data.At present, domestic and international many universities have all set about making up and transform the laboratory by virtual instrument technique, to improve the means and the efficient of current experiments teaching and scientific research.
In university's motor experiment process, the characteristic test of dc motor speed, torque etc. is absolutely necessary.At present, main means of testing is traditional instrument mostly, and is relatively more difficult aspect data acquisition and corresponding feedback, but virtual instrument technique can solve such problem preferably.
In addition, in the current experiments system, experimental provision all is relatively independent, between the instrument substantially without any data communication function, the student manually checks, writes down and analyze experimental data, and this makes the precision of experiment and reliability can not get ensureing, causes the purpose of experiment not reach.
Summary of the invention
The object of the present invention is to provide a kind of method of parameter of electric machine detection and design a dc motor speed torque measurement experimental provision based on virtual instrument technique according to this method, this scheme is introduced the notion of virtual instrument, in conjunction with the experiment demand, be embedded in computing machine at experimental apparatus, can comparatively fast detect measured data, and the processing, record and the result that finish data simultaneously show task, reaches student's study and understand the purpose of the content of courses.Technical scheme of the present invention is as described below.
A kind of motor experimental system scheme based on virtual instrument technique, it comprises following steps:
A, data acquisition step: utilize sensor that tested parameter of electric machine signal is gathered;
B, signal transmitting step: parameter of electric machine signal is sent into computing machine by signal regulating device and data collector;
C, data processing step: the signal that collects is carried out analyzing and processing by the virtual instrument on the computing machine;
D, step display as a result: will go up the analysis result that step obtains and be sent on the graphoscope, and preserve simultaneously or print.
Wherein, described motor is a direct current generator.
Wherein, described signal regulating device is the signal conditioning circuit that can carry out filtering, isolation and processing and amplifying to data.
Wherein, described data collector is to carry out A/D data converted capture card.
Wherein, described virtual instrument is formed by software virtual, the concrete steps of this software are to check whether acquisition channel is normal, as normally, with the two-way of sensor with frequently not in-phase signal read, count two signal frequencies, calculate two signal phase differences, draw tested motor speed, torque, and the parameter of its output power everywhere, write down simultaneously and preserve.
A kind of device of the motor experimental system scheme based on virtual instrument technique, wherein, it by part of data acquisition, signal hop, data processing section and as a result the display part form; Described part of data acquisition connects tested direct current generator, described signal hop connects part of data acquisition, described data processing section connects the signal hop, and described display part as a result connects data processing section, and deal with data is shown by display part as a result.
Wherein, described part of data acquisition is made up of power supply, sensor, the tach signal of the tested direct current generator of sensor acquisition, and signal data sent into the signal hop.
Wherein, described signal hop is made up of signal conditioning circuit, data collecting card and computing machine, described sensor acquisition to signal data be converted into the discernible data-signal of data collecting card after by signal conditioning circuit filtering, isolation and processing and amplifying, import signal into Computer Processing by data collecting card by the A/D conversion again.
Wherein, described data processing section is by software simulation hardware the data that collect to be carried out analyzing and processing, concrete disposal route is to check whether acquisition channel is normal, as normally, with the two-way of sensor with frequently not in-phase signal read, count two signal frequencies, calculate two signal phase differences, draw tested motor speed, torque, and the parameter of its output power everywhere, write down simultaneously and preserve.
Wherein, described display part as a result is a graphoscope, and it can showing test result such as tested rotating speed of motor, torque and power.
The solution of the present invention and device are to realize collection to tested dc motor speed signal by external sensor, make it in the identification range of signal conditioning circuit, finish conditioning after data collecting card is sent in the computing machine, the processing procedure of whole data all is to be programmed by the virtual instrument software in the computing machine to finish, handle by analysis rotating speed, torque and the output power numerical value that will obtain friendly human-computer interface computer on show, simultaneously it is recorded in the corresponding document.
The invention has the advantages that: 1, improved the experiment condition of direct current generator test in the prior art, the whole proposal favorable repeatability has been avoided personal error; 2, the device of using this scheme is realized the integrated of experimental apparatus, makes the integrated cost of experiment and testing apparatus obviously descend, and step obviously reduces; 3, this scheme and device can be widely applied to other subject experimental teaching, and can realize the experimental teaching and the scientific research of network through suitably expansion, improve the practical efficient of experimental situation greatly.
Description of drawings
Fig. 1 is the theory diagram of related a kind of motor experimental system scheme based on virtual instrument technique in the embodiment of the invention.
Fig. 2 is the one-piece construction figure of related a kind of motor experiment device based on virtual instrument technique in the embodiment of the invention.
Fig. 3 is a kind of functional flow diagram based on virtual instrument part in the motor experiment device of virtual instrument technique related in the embodiment of the invention.
Main symbol implication:
1, by measured motor 2, sensor
3, signal conditioning circuit 4, data collecting card
5, virtual instrument testing software 6, graphoscope
7, part of data acquisition 8, signal hop
9, signal processing 10, display part as a result
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
Embodiment
See also shown in Figure 1, the step of related a kind of motor experimental system scheme based on virtual instrument technique mainly comprises in the embodiment of the invention: at first utilize 2 pairs of revolution signals by measured motor 1 (direct current generator) of sensor to gather, to be sent into signal conditioning circuit 3 by the revolution signal of measured motor 1 then handles, signal conditioning circuit 3 is M SCC signal conditioning circuits, it mainly carries out filtering to signal, isolate and processing and amplifying, the signal that obtains after the processing is sent into data collecting card 4 identifications and is handled, described data collecting card 4 is NI USB-6210 data collecting cards, 4 pairs of signals of described data collecting card carry out after the A/D conversion signal being sent in the computing machine, handle by virtual instrument testing software 5 based on computer system software, the concrete steps of this software are please shown in Figure 3 in conjunction with consulting, this step wherein at first is provided with sampling channel, the two-way of pick-up transducers is with in-phase signal not frequently then, count two signal frequencies, calculate two signal phase differences, draw tested motor speed, torque, and obtain the parameter of its output power.Virtual instrument testing software 5 handles the result who obtains and sends into graphoscope 6 demonstrations.
Please in conjunction with referring to shown in Figure 2, the device of a kind of motor experimental system scheme based on virtual instrument technique that uses in the foregoing description, its by part of data acquisition 7, signal hop 8, data processing section 9 and as a result display part 10 form; Described part of data acquisition 7 connects by measured motor 1, described signal hop 8 connects part of data acquisition 7, described data processing section 9 connects signal hops 8, and described display part as a result 10 connects data processing sections 9, and deal with data is shown by display part 10 as a result.Wherein, described part of data acquisition 7 is made up of power supply, sensor 2, and sensor 2 is gathered by the tach signal of measured motor 1, and signal data is sent into signal hop 8.Described signal hop 8 is made up of signal conditioning circuit 3, data collecting card 4 and computing machine, the signal data that described sensor 2 collects is converted into data collecting card 4 discernible data-signals after by signal conditioning circuit 3 filtering, isolation and processing and amplifying, imports signal into Computer Processing by data collecting card 4 by the A/D conversion again.Described data processing section 9 is by virtual instrument testing software 5 analog hardwares the data that collect to be carried out analyzing and processing.Described display part as a result 10 is graphoscopes, and it can be with test result as showing by the rotating speed of measured motor 1, torque and power.
Claims (10)
1. motor experimental system scheme based on virtual instrument technique, it comprises following steps:
A, data acquisition step: utilize sensor that tested parameter of electric machine signal is gathered;
B, signal transmitting step: parameter of electric machine signal is sent into computing machine by signal regulating device and data collector;
C, data processing step: the signal that collects is carried out analyzing and processing by the virtual instrument on the computing machine;
D, step display as a result: will go up the analysis result that step obtains and be sent on the graphoscope, and preserve simultaneously or print.
2. scheme as claimed in claim 1 is characterized in that described motor is a direct current generator.
3. scheme as claimed in claim 2 is characterized in that, described signal regulating device is the signal conditioning circuit that can carry out filtering, isolation and processing and amplifying to data.
4. scheme as claimed in claim 3 is characterized in that, described data collector is to carry out A/D data converted capture card.
5. scheme as claimed in claim 4, it is characterized in that, described virtual instrument is formed by software virtual, and the concrete steps of this software are to check whether acquisition channel is normal, as normally, with the two-way of sensor with frequently not in-phase signal read, count two signal frequencies, calculate two signal phase differences, draw tested motor speed, torque, and the parameter of its output power everywhere, write down simultaneously and preserve.
6. the device of the motor experimental system scheme based on virtual instrument technique according to claim 1 is characterized in that, it by part of data acquisition, signal hop, data processing section and as a result the display part form; Described part of data acquisition connects tested direct current generator, described signal hop connects part of data acquisition, described data processing section connects the signal hop, and described display part as a result connects data processing section, and deal with data is shown by display part as a result.
7. device as claimed in claim 6 is characterized in that described part of data acquisition is made up of power supply, sensor, the tach signal of the tested direct current generator of sensor acquisition, and signal data sent into the signal hop.
8. device as claimed in claim 6, it is characterized in that, described signal hop is made up of signal conditioning circuit, data collecting card and computing machine, described sensor acquisition to signal data be converted into the discernible data-signal of data collecting card after by signal conditioning circuit filtering, isolation and processing and amplifying, import signal into Computer Processing by data collecting card by the A/D conversion again.
9. device as claimed in claim 6, it is characterized in that, described data processing section is by software simulation hardware the data that collect to be carried out analyzing and processing, and concrete disposal route is to check whether acquisition channel is normal, as normally, with the two-way of sensor with frequently not in-phase signal read, count two signal frequencies, calculate two signal phase differences, draw tested motor speed, torque, and the parameter of its output power everywhere, write down simultaneously and preserve.
10. device as claimed in claim 6 is characterized in that, described display part as a result is a graphoscope, and it can showing test result such as tested rotating speed of motor, torque and power.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917159A (en) * | 2010-07-07 | 2010-12-15 | 电子科技大学 | System and method for controlling running speed and displacement of linear motor |
| CN102338678A (en) * | 2010-07-28 | 2012-02-01 | 浙江松菱电气有限公司 | Energy feedback type power testing method for power machinery and implementing device thereof |
| CN102829910A (en) * | 2011-06-13 | 2012-12-19 | 上海电驱动有限公司 | Wide voltage energy-saving type permanent magnet motor power measuring system |
| CN104808011A (en) * | 2015-05-06 | 2015-07-29 | 成都诚邦动力测试仪器有限公司 | Motor revolving speed testing system based on self-gain control |
| CN108981787A (en) * | 2018-07-23 | 2018-12-11 | 中电科技（合肥）博微信息发展有限责任公司 | Measuring system and measurement method based on LabVIEW |
| CN108986608A (en) * | 2017-06-03 | 2018-12-11 | 陆元成 | Electronic circuit experiment instructs system automatically |
-
2008
- 2008-11-14 CN CN200810202768A patent/CN101738487A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917159A (en) * | 2010-07-07 | 2010-12-15 | 电子科技大学 | System and method for controlling running speed and displacement of linear motor |
| CN101917159B (en) * | 2010-07-07 | 2013-01-09 | 电子科技大学 | System and method for controlling running speed and displacement of linear motor |
| CN102338678A (en) * | 2010-07-28 | 2012-02-01 | 浙江松菱电气有限公司 | Energy feedback type power testing method for power machinery and implementing device thereof |
| CN102829910A (en) * | 2011-06-13 | 2012-12-19 | 上海电驱动有限公司 | Wide voltage energy-saving type permanent magnet motor power measuring system |
| CN102829910B (en) * | 2011-06-13 | 2014-12-10 | 上海电驱动股份有限公司 | Wide voltage energy-saving type permanent magnet motor power measuring system |
| CN104808011A (en) * | 2015-05-06 | 2015-07-29 | 成都诚邦动力测试仪器有限公司 | Motor revolving speed testing system based on self-gain control |
| CN108986608A (en) * | 2017-06-03 | 2018-12-11 | 陆元成 | Electronic circuit experiment instructs system automatically |
| CN108981787A (en) * | 2018-07-23 | 2018-12-11 | 中电科技（合肥）博微信息发展有限责任公司 | Measuring system and measurement method based on LabVIEW |
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Application publication date: 20100616 |