CN203644279U - Virtual instrument experiment system - Google Patents
Virtual instrument experiment system Download PDFInfo
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- CN203644279U CN203644279U CN201320811954.1U CN201320811954U CN203644279U CN 203644279 U CN203644279 U CN 203644279U CN 201320811954 U CN201320811954 U CN 201320811954U CN 203644279 U CN203644279 U CN 203644279U
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Abstract
The utility model discloses a virtual instrument experiment system. The virtual instrument experiment device is provided with a first DSP module and a second DSP module, and data exchange is carried out between the first DSP module and the second DSP module through an outer expansion dual-port RAM chip; an A/D converter interface of the first DSP module is connected with a signal conditioning module, and the signal conditioning module is provided with four paths of analog input terminals; an SPI port of the second DSP module is provided with a USB interface module; and the first DSP module and the second DSP module are respectively connected with an asynchronous serial interface through an SCI port, and are respectively provided with an extended memory. The problem that traditional experiment teaching equipment is restricted by experiment time, place and insufficient quantity of experiment devices is solved, the virtual instrument experiment system is reasonable in structure design and ingenious and novel in conception, experiment data acquisition and analysis can be achieved by means of the virtual instrument technology, and level and quality of the experiment teaching can be improved.
Description
Technical field
The utility model relates to teaching experimental equipment, is specifically related to a kind of virtual instrument test system.
Background technology
Digital signal processor (Digital Signal Processor, DSP) is the device that carrys out process information with digital signal, and its principle of work is the simulating signal receiving to be converted to digital signal be treated to signals of reality again.
In real-time data acquisition, dsp processor is being born considerable role always, except completing the pre-service and output of field data, also can carry out analyzing and processing to field data.More and more higher to the accuracy requirement of system own in information handling system, the data volume of required processing is increasing, requires the speed of data processing also more and more higher, and this hardware to system is had higher requirement.In common data handling system, adopt single CPU to serve as data acquisition and processing (DAP) work, but in the strict high-speed data acquistion system of requirement of real-time, single CPU is usually because a large amount of data I/O and interface burst directly affect the normal work of data acquisition system (DAS).Traditional experiment teaching equipment can be subject to the restriction of experimental period, place and experimental provision lazy weight simultaneously, bring inconvenience to teachers and students, existing experimental teaching unit is also not easy to all students and carries out experimental implementation simultaneously, also be not easy to teacher and carry out teaching operation, in addition, experimental teaching unit floor area is large, and experiment fees is high, is unfavorable for modernizing teaching.
Utility model content
Technical problem to be solved in the utility model is realize a kind of data acquisition and analyze fast and reliable, and can realize the virtual instrument test device of analysis and the processing of measured signal.
To achieve these goals, the technical solution adopted in the utility model is: a kind of virtual instrument test system, described virtual instrument test device is provided with a DSP module and the 2nd DSP module, between a described DSP module and the 2nd DSP module, carry out exchanges data by extending out dual port RAM chip, the A/D converter interface of a described DSP module connects signal condition module, described signal condition module is provided with 4 road analog input ends, the SPI port of the 2nd described DSP module is provided with usb interface module, a described DSP module is all connected Asynchronous Serial Interface by SCI port with the 2nd DSP module, and be equipped with extended memory.
Described virtual instrument test device is powered by power module.
The power supply of described power module provides No. five direct supplys steady, is respectively ± 15V ,+5V ,+3.3V ,+1.9V.
A described DSP module and the 2nd DSP module adopt the TMS320F28335 chip that dominant frequency is 150MHz.
The utility model solution traditional experiment teaching equipment can be subject to the restriction of experimental period, place and experimental provision lazy weight, its reasonable in design, the novelty that is skillfully constructed, can complete data acquisition and the analysis of experiment by virtual instrument technique, can improve level and the quality of experimental teaching.In addition can realize based on the utility model the analysis and the processing that utilize the superpower computing power of computing machine and various software to realize measured signal, realize various test functions.Can solve the restriction of experimental period, place and experimental provision lazy weight in traditional experiment teaching completely.Cost is lower, easy to operate, is easy to promote the use of.
Brief description of the drawings
Below the mark in content and figure that in the utility model instructions, every width accompanying drawing is expressed is briefly described:
Fig. 1 is structured flowchart of the present utility model;
Fig. 2 is the outside extended memory interface hardware of the utility model circuit theory diagrams;
Fig. 3 is the utility model signal conditioning circuit schematic diagram.
Embodiment
Known referring to Fig. 1, virtual instrument test device is provided with two DSP modules, dsp chip adopts the TMS320F28335 that high-performance, low-power consumption dominant frequency are 150MHz, be respectively a DSP module and the 2nd DSP module, two modules all need to expand 256k × 16bitRAM, 16k × 16bit dual port RAM, high speed 4 road 12bitD/A, 1 road RS-422 Asynchronous Serial Interface, 512k × 16bitFLASH, usb interface module, 4 road analog input signals connect A/D converter interface by signal condition module.Virtual instrument test device is powered by power module, and power module provides No. five direct supply: ± 15V (simulation) ,+5V (numeral) ,+3.3V (numeral) ,+1.9V (numeral).
Between the one DSP module and the 2nd DSP module, carry out exchanges data by extending out dual port RAM chip, 0MHz external crystal-controlled oscillation (clock source).The A/D converter interface of the one DSP module connects signal condition module, and signal condition module is provided with 4 road analog input ends, circuit as shown in Figure 3, using signal condition module is because bipolarity analog input signal can not directly access DSP modules A/D input pin, need to pass through signal condition module, within the scope that the maximum voltage range-adjusting of signal is allowed to TMS320F28335-DSP chip A/D input (0 to+3Vp-p), be input to again ADC, input simulating signal maximum amplitude is ± 15Vp-p, the anti-phase gain-adjusted scope of input analog channel is-0.1 to-10, outputting analog signal maximum amplitude is 0 to-10V, the anti-phase gain-adjusted scope of output analog channel is-0.1 to-10.
The one DSP module is all connected Asynchronous Serial Interface by SCI port with the 2nd DSP module, and is equipped with extended memory, as shown in Figure 2.The SPI port of two DSP modules is provided with usb interface module, realizes being connected of DSP module and PC, and then realize the data interaction of dsp processor and LabVIEW platform by USB interface.
This system completes experimental implementation, is the data acquisition virtual instrument test system and device of a multifunction, also can solve experimental period in traditional experiment teaching completely, the restriction of place and experimental provision lazy weight.The inconvenience bringing to teachers and students, existing experimental teaching unit is also not easy to all students and carries out experimental implementation simultaneously, is also not easy to teacher and carries out teaching operation.The virtual instrument test device design cost of a kind of double-DSP system described in the utility model is lower, easy to operate, and man-machine interface close friend, is easy to promote the use of.
By reference to the accompanying drawings the present invention is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or without improving, design of the present invention and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (4)
1. a virtual instrument test system, it is characterized in that: described virtual instrument test device is provided with a DSP module and the 2nd DSP module, between a described DSP module and the 2nd DSP module, carry out exchanges data by extending out dual port RAM chip, the A/D converter interface of a described DSP module connects signal condition module, described signal condition module is provided with 4 road analog input ends, the SPI port of the 2nd described DSP module is provided with usb interface module, a described DSP module is all connected Asynchronous Serial Interface by SCI port with the 2nd DSP module, and be equipped with extended memory.
2. virtual instrument test system according to claim 1, is characterized in that: described virtual instrument test device is powered by power module.
3. virtual instrument test system according to claim 2, is characterized in that: the power supply of described power module provides No. five direct supplys steady, is respectively ± 15V ,+5V ,+3.3V ,+1.9V.
4. virtual instrument test system according to claim 1, is characterized in that: a described DSP module and the 2nd DSP module adopt the TMS320F28335 chip that dominant frequency is 150MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320811954.1U CN203644279U (en) | 2013-12-10 | 2013-12-10 | Virtual instrument experiment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320811954.1U CN203644279U (en) | 2013-12-10 | 2013-12-10 | Virtual instrument experiment system |
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| Publication Number | Publication Date |
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| CN203644279U true CN203644279U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320811954.1U Expired - Fee Related CN203644279U (en) | 2013-12-10 | 2013-12-10 | Virtual instrument experiment system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114677868A (en) * | 2022-03-11 | 2022-06-28 | 中国人民解放军陆军装甲兵学院 | Equipment maintenance training system |
| CN114694443A (en) * | 2022-03-11 | 2022-07-01 | 中国人民解放军陆军装甲兵学院 | Equipment maintenance training platform |
-
2013
- 2013-12-10 CN CN201320811954.1U patent/CN203644279U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114677868A (en) * | 2022-03-11 | 2022-06-28 | 中国人民解放军陆军装甲兵学院 | Equipment maintenance training system |
| CN114694443A (en) * | 2022-03-11 | 2022-07-01 | 中国人民解放军陆军装甲兵学院 | Equipment maintenance training platform |
| CN114677868B (en) * | 2022-03-11 | 2023-08-15 | 中国人民解放军陆军装甲兵学院 | Equipment maintenance training system |
| CN114694443B (en) * | 2022-03-11 | 2023-08-15 | 中国人民解放军陆军装甲兵学院 | Equipment maintenance training platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140611 Termination date: 20141210 |
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| EXPY | Termination of patent right or utility model |