CN104749496A - Self-diagnosis circuit for lightning surge generator test - Google Patents
Self-diagnosis circuit for lightning surge generator test Download PDFInfo
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- CN104749496A CN104749496A CN201310745465.5A CN201310745465A CN104749496A CN 104749496 A CN104749496 A CN 104749496A CN 201310745465 A CN201310745465 A CN 201310745465A CN 104749496 A CN104749496 A CN 104749496A
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- lightning surge
- surge generator
- self
- circuit
- chip microcomputer
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- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 238000004092 self-diagnosis Methods 0.000 title abstract 4
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 238000005070 sampling Methods 0.000 claims abstract description 14
- 230000015556 catabolic process Effects 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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- Testing Electric Properties And Detecting Electric Faults (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention relates to a self-diagnosis circuit for lightning surge generator test. The self-diagnosis circuit comprises a current transformer, a peak value sampling and holding circuit, an analog-digital conversion circuit and a single chip connected in sequence, and the current transformer is connected with a lightning surge generator; the current transformer gathers the current at the surge voltage breakdown time of the lightning surge generator and inputs the current to the peak value sampling and holding circuit, the peak value sampling and holding circuit acquires the positive and negative pulse peak values of the current and inputs to the analog-digital conversion circuit to process, the converted digital quantity is transmitted to the single chip, and the single chip compares the received digital quantity with a preset breakdown current value and acts correspondingly according to the comparison result. Compared with the prior art, the self-diagnosis circuit for the lightning surge generator test has advantages of high working efficiency, high automatic degree and the like.
Description
Technical field
The present invention relates to lightning surge generator, especially relate to a kind of self-diagnostic circuit for lightning surge generator test.
Background technology
Existing lightning surge generator, experimenter is after testing test product, can only by going artificially to observe or measure failure and the success that test product carries out judging test, and when doing experiment to test product, the test number (TN) that some test products will do and the time longer, experimenter to wonder test product when test product test failure must observe on side always, this time consumption that can slattern user a large amount of is waited at that, reduces work efficiency.
Summary of the invention
Object of the present invention be exactly provide a kind of increase work efficiency to overcome defect that above-mentioned prior art exists, the self-diagnostic circuit for lightning surge generator test that automaticity is high.
Object of the present invention can be achieved through the following technical solutions:
For a self-diagnostic circuit for lightning surge generator test, comprise the current transformer, peak sampling hold circuit, analog to digital conversion circuit and the single-chip microcomputer that connect successively, described current transformer is connected with lightning surge generator;
Current transformer gathers the electric current of lightning surge generator surge voltage breakdown time, input peak sampling hold circuit, peak sampling hold circuit inputs analog to digital conversion circuit process after gathering the positive negative pulse stuffing peak value of electric current, and the digital quantity after conversion is transferred to single-chip microcomputer, the digital quantity received and the breakdown potential flow valuve preset contrast by single-chip microcomputer, and act accordingly according to comparing result.
Described analog to digital conversion circuit is provided with 8 tunnels and selects input.
Described analog to digital conversion circuit adopts ADC0804 chip.
Described single-chip microcomputer is connected with alarm buzzer.
Described acting accordingly according to comparing result is specially: if the digital quantity that single-chip microcomputer receives is greater than the breakdown potential flow valuve preset, then Single-chip Controlling alarm buzzer sends chimes of doom, shows test failure simultaneously and reminds.
Compared with prior art, the present invention carries out collection display to breakdown current, and whether diagnostic test is normal, and when test failure, enter alarm condition in time, aspect user records the parameter of test failure, increases work efficiency and automaticity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the schematic diagram of peak sampling hold circuit;
Fig. 3 is the schematic diagram of analog to digital conversion circuit.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.The present embodiment is implemented premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, a kind of self-diagnostic circuit for lightning surge generator test, comprise the current transformer 1, peak sampling hold circuit 2, analog to digital conversion circuit 3 and the single-chip microcomputer 4 that connect successively, described current transformer 1 is connected with lightning surge generator 5, and described single-chip microcomputer 4 is connected with alarm buzzer.
Be illustrated in figure 2 the schematic diagram of peak sampling hold circuit, this circuit can collect the peak value of Microsecond grade pulse, and the value of collection can be remained on peak value drop range in the 3S time and be no more than 1%.Be illustrated in figure 3 the schematic diagram of analog to digital conversion circuit, this analog to digital conversion circuit adopts ADC0804 chip, is furnished with 8 tunnels and selects input.
The principle of work of above-mentioned self-diagnostic circuit is: current transformer 1 gathers the electric current of lightning surge generator 5 surge voltage breakdown time, input peak sampling hold circuit 2, peak sampling hold circuit 2 inputs analog to digital conversion circuit 3 after gathering the positive negative pulse stuffing peak value of electric current and processes, and the digital quantity after conversion is transferred to single-chip microcomputer 4, the digital quantity received and the breakdown potential flow valuve preset contrast by single-chip microcomputer 4, and act accordingly according to comparing result:
If the digital quantity that single-chip microcomputer 4 receives is greater than the breakdown potential flow valuve preset, then single-chip microcomputer 4 controls alarm buzzer and sends chimes of doom, shows test failure simultaneously and reminds.
Claims (5)
1., for a self-diagnostic circuit for lightning surge generator test, it is characterized in that, comprise the current transformer, peak sampling hold circuit, analog to digital conversion circuit and the single-chip microcomputer that connect successively, described current transformer is connected with lightning surge generator;
Current transformer gathers the electric current of lightning surge generator surge voltage breakdown time, input peak sampling hold circuit, peak sampling hold circuit inputs analog to digital conversion circuit process after gathering the positive negative pulse stuffing peak value of electric current, and the digital quantity after conversion is transferred to single-chip microcomputer, the digital quantity received and the breakdown potential flow valuve preset contrast by single-chip microcomputer, and act accordingly according to comparing result.
2. a kind of self-diagnostic circuit for lightning surge generator test according to claim 1, it is characterized in that, described analog to digital conversion circuit is provided with 8 tunnels and selects input.
3. a kind of self-diagnostic circuit for lightning surge generator test according to claim 1, it is characterized in that, described analog to digital conversion circuit adopts ADC0804 chip.
4. a kind of self-diagnostic circuit for lightning surge generator test according to claim 1, is characterized in that, described single-chip microcomputer is connected with alarm buzzer.
5. a kind of self-diagnostic circuit for lightning surge generator test according to claim 4, it is characterized in that, described acting accordingly according to comparing result is specially: if the digital quantity that single-chip microcomputer receives is greater than the breakdown potential flow valuve preset, then Single-chip Controlling alarm buzzer sends chimes of doom, shows test failure simultaneously and reminds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310745465.5A CN104749496A (en) | 2013-12-30 | 2013-12-30 | Self-diagnosis circuit for lightning surge generator test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310745465.5A CN104749496A (en) | 2013-12-30 | 2013-12-30 | Self-diagnosis circuit for lightning surge generator test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104749496A true CN104749496A (en) | 2015-07-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310745465.5A Pending CN104749496A (en) | 2013-12-30 | 2013-12-30 | Self-diagnosis circuit for lightning surge generator test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104749496A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646041A (en) * | 2016-12-08 | 2017-05-10 | 中国北方发动机研究所(天津) | Engine start initial engaging surge voltage simulation method |
| CN107192874A (en) * | 2016-03-15 | 2017-09-22 | 上海普锐马电子有限公司 | A kind of pulse residual voltage measuring system for lightning surge generator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1721862A (en) * | 2004-07-14 | 2006-01-18 | 深圳锦天乐防雷技术有限公司 | Method and equipment for recording lightning stroke current intensity and occurrence time |
| CN102156251A (en) * | 2011-03-18 | 2011-08-17 | 杭州远方仪器有限公司 | Lightning surge generator |
| CN102721892A (en) * | 2012-07-03 | 2012-10-10 | 上海凌世电磁技术有限公司 | Test piece failure distinguishing system and test piece failure distinguishing method for lightning surge test |
| CN102937662A (en) * | 2011-08-15 | 2013-02-20 | 上海普锐马电子有限公司 | Coupling decoupling network lightning surge generator |
| CN103399263A (en) * | 2013-07-24 | 2013-11-20 | 西安交通大学 | System and method for comprehensively measuring direct current (DC) parameters of surge protection module |
-
2013
- 2013-12-30 CN CN201310745465.5A patent/CN104749496A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1721862A (en) * | 2004-07-14 | 2006-01-18 | 深圳锦天乐防雷技术有限公司 | Method and equipment for recording lightning stroke current intensity and occurrence time |
| CN102156251A (en) * | 2011-03-18 | 2011-08-17 | 杭州远方仪器有限公司 | Lightning surge generator |
| CN102937662A (en) * | 2011-08-15 | 2013-02-20 | 上海普锐马电子有限公司 | Coupling decoupling network lightning surge generator |
| CN102721892A (en) * | 2012-07-03 | 2012-10-10 | 上海凌世电磁技术有限公司 | Test piece failure distinguishing system and test piece failure distinguishing method for lightning surge test |
| CN103399263A (en) * | 2013-07-24 | 2013-11-20 | 西安交通大学 | System and method for comprehensively measuring direct current (DC) parameters of surge protection module |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192874A (en) * | 2016-03-15 | 2017-09-22 | 上海普锐马电子有限公司 | A kind of pulse residual voltage measuring system for lightning surge generator |
| CN106646041A (en) * | 2016-12-08 | 2017-05-10 | 中国北方发动机研究所(天津) | Engine start initial engaging surge voltage simulation method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150701 |