CN204086435U - A kind of microcomputer relay protection tester - Google Patents
A kind of microcomputer relay protection tester Download PDFInfo
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- CN204086435U CN204086435U CN201420630180.7U CN201420630180U CN204086435U CN 204086435 U CN204086435 U CN 204086435U CN 201420630180 U CN201420630180 U CN 201420630180U CN 204086435 U CN204086435 U CN 204086435U
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Abstract
The utility model discloses a kind of microcomputer relay protection tester, comprise microprocessor, code translator, switching value, driving circuit, optical coupling isolation circuit and voltage power amplifying circuit.The utility model structure is simple, reasonable in design, can test microcomputer device and detect in real time fault; simple and convenient; can meet all kinds of protective relay of different microcomputer type and the test request of protection system, result of use is good, and promotional value is high.
Description
Technical field
The utility model relates to a kind of proving installation, specifically a kind of microcomputer relay protection tester.
Background technology
The development of electric system and safe and stable operation bring huge power benefit to national economy and social development, once there is nature or artificial fault in electric system, can not be controlled in time, system loss of stability will be made, main equipment is caused to damage, electric network from collapsing, cause large-area power-cuts, serious consequence is brought to system and society, relay protection is the important means ensureing that power system safety and stability runs, the Microcomputer Protection of one of its ingredient serves vital role, but most integrated circuit is measured and is tested parameters respectively, make the complicated structure of its peripheral circuit, control procedure is complicated, measuring accuracy and measurement range are restricted.
Utility model content
The purpose of this utility model is the microcomputer relay protection tester providing a kind of structure simple, reasonable in design, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of microcomputer relay protection tester, comprise microprocessor, code translator, switching value, driving circuit, optical coupling isolation circuit and voltage power amplifying circuit, described microprocessor connects PC respectively, code translator, switching value and D/A converting circuit, switching value also connects code translator and protective device respectively, code translator also connects driving circuit successively, optical coupling isolation circuit and D/A converting circuit, D/A converting circuit also connects low-pass filter circuit 1 and low-pass filter circuit 2 respectively, low-pass filter circuit 1 also connects voltage power amplifying circuit, described low-pass filter circuit 2 also connects current power amplifying circuit, difference connecting valve power circuit and protection circuit between described voltage power amplifying circuit and current power amplifying circuit, voltage power amplifying circuit is also connected protective device respectively with current power amplifying circuit.
As further program of the utility model: described microprocessor model is TMS320F206, described code translator model is ispLSI1016, described driving circuit adopts chip 74HC244, described D/A converting circuit adopts high-performance analog-digital chip AD669, and described optical coupling isolation circuit adopts TLP521-4 photoelectrical coupler.
As the utility model further scheme: described D/A converting circuit adopts 7 road D/A to change, wherein 4 tunnel conversions connect voltage power amplifying circuit by low-pass filter circuit 1, and 3 tunnel conversions connect current power amplifying circuit by low-pass filter circuit 2.
Compared with prior art; the beneficial effects of the utility model are: the utility model structure is simple; reasonable in design; can test microcomputer device and fault be detected in real time; simple and convenient; can meet all kinds of protective relay of different microcomputer type and the test request of protection system, result of use is good, and promotional value is high.
Accompanying drawing explanation
Fig. 1 is the circuit structure block diagram of microcomputer relay protection tester.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of microcomputer relay protection tester, comprise microprocessor, code translator, switching value, driving circuit, optical coupling isolation circuit and voltage power amplifying circuit, described microprocessor connects PC respectively, code translator, switching value and D/A converting circuit, switching value also connects code translator and protective device respectively, code translator also connects driving circuit successively, optical coupling isolation circuit and D/A converting circuit, D/A converting circuit also connects low-pass filter circuit 1 and low-pass filter circuit 2 respectively, low-pass filter circuit 1 also connects voltage power amplifying circuit, described low-pass filter circuit 2 also connects current power amplifying circuit, difference connecting valve power circuit and protection circuit between described voltage power amplifying circuit and current power amplifying circuit, voltage power amplifying circuit is also connected protective device respectively with current power amplifying circuit.
Microprocessor model is TMS320F206, and code translator model is ispLSI1016, and driving circuit adopts chip 74HC244, and D/A converting circuit adopts high-performance analog-digital chip AD669, and optical coupling isolation circuit adopts TLP521-4 photoelectrical coupler.
D/A converting circuit adopts 7 road D/A to change, and the signal after changing is sine wave signal, and wherein 4 tunnel conversions connect voltage power amplifying circuit by low-pass filter circuit 1, and 3 tunnel conversions connect current power amplifying circuit by low-pass filter circuit 2.
Start microcomputer relay protection tester described in the utility model; each circuit signal of switching value; and testing result is passed to microprocessor; microprocessor carries out analyzing and processing to testing result; when protective device has problems, problem is fed back to PC by microprocessor, is exported by PC screen; when protective device is no problem, PC continues through the circuit such as microprocessor, code translator, driving circuit to be continued to send various detection signal to protective device.
Claims (3)
1. a microcomputer relay protection tester, comprise microprocessor, code translator, switching value, driving circuit, optical coupling isolation circuit and voltage power amplifying circuit, it is characterized in that, described microprocessor connects PC respectively, code translator, switching value and D/A converting circuit, switching value also connects code translator and protective device respectively, code translator also connects driving circuit successively, optical coupling isolation circuit and D/A converting circuit, D/A converting circuit also connects low-pass filter circuit 1 and low-pass filter circuit 2 respectively, low-pass filter circuit 1 also connects voltage power amplifying circuit, described low-pass filter circuit 2 also connects current power amplifying circuit, difference connecting valve power circuit and protection circuit between described voltage power amplifying circuit and current power amplifying circuit, voltage power amplifying circuit is also connected protective device respectively with current power amplifying circuit.
2. microcomputer relay protection tester according to claim 1; it is characterized in that; described microprocessor model is TMS320F206; described code translator model is ispLSI1016; described driving circuit adopts chip 74HC244; described D/A converting circuit adopts high-performance analog-digital chip AD669, and described optical coupling isolation circuit adopts TLP521-4 photoelectrical coupler.
3. microcomputer relay protection tester according to claim 1; it is characterized in that; described D/A converting circuit adopts 7 road D/A to change, and wherein 4 tunnel conversions connect voltage power amplifying circuit by low-pass filter circuit 1, and 3 tunnel conversions connect current power amplifying circuit by low-pass filter circuit 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420630180.7U CN204086435U (en) | 2014-10-29 | 2014-10-29 | A kind of microcomputer relay protection tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420630180.7U CN204086435U (en) | 2014-10-29 | 2014-10-29 | A kind of microcomputer relay protection tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204086435U true CN204086435U (en) | 2015-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420630180.7U Expired - Fee Related CN204086435U (en) | 2014-10-29 | 2014-10-29 | A kind of microcomputer relay protection tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204086435U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849580A (en) * | 2015-04-14 | 2015-08-19 | 中广核核电运营有限公司 | System and method for testing function of protecting card |
| CN105262062A (en) * | 2015-09-25 | 2016-01-20 | 陈薇 | Power switch cabinet protection system |
| CN105606939A (en) * | 2016-03-21 | 2016-05-25 | 成都天进仪器有限公司 | Portable microcomputer relay protection tester |
| CN106707148A (en) * | 2016-12-01 | 2017-05-24 | 武汉市欧睿科技有限公司 | Switch characteristic tester |
-
2014
- 2014-10-29 CN CN201420630180.7U patent/CN204086435U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849580A (en) * | 2015-04-14 | 2015-08-19 | 中广核核电运营有限公司 | System and method for testing function of protecting card |
| CN105262062A (en) * | 2015-09-25 | 2016-01-20 | 陈薇 | Power switch cabinet protection system |
| CN105606939A (en) * | 2016-03-21 | 2016-05-25 | 成都天进仪器有限公司 | Portable microcomputer relay protection tester |
| CN106707148A (en) * | 2016-12-01 | 2017-05-24 | 武汉市欧睿科技有限公司 | Switch characteristic tester |
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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: 20150107 Termination date: 20211029 |
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| CF01 | Termination of patent right due to non-payment of annual fee |