CN102721918A - High-voltage detection circuit - Google Patents
High-voltage detection circuit Download PDFInfo
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- CN102721918A CN102721918A CN2011100771890A CN201110077189A CN102721918A CN 102721918 A CN102721918 A CN 102721918A CN 2011100771890 A CN2011100771890 A CN 2011100771890A CN 201110077189 A CN201110077189 A CN 201110077189A CN 102721918 A CN102721918 A CN 102721918A
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- detecting circuit
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Abstract
The invention discloses a high-voltage detection circuit, comprising a technotron, a high-voltage inductive probe connected to a grid of the technotron, a high frequency filtering capacitor connected between the grid and a source electrode of the technotron, a three-port switch module, a prompt module used to prompt a high voltage, and a power module. Breakover or shutoff of an input end and an output end of the switch module is controlled by the switch module based on a voltage of a controlling end, so that the prompt module prompts or does not prompt the high voltage. The above high-voltage detection circuit can realize simple high-voltage detection only with a few devices, so the detection circuit has a relative high efficiency, a simple structure, and low costs. In addition, due to the detection without touching a high-voltage signal source, the high-voltage detection circuit achieves a high security.
Description
[technical field]
The present invention relates to testing circuit, especially relate to a kind of high-voltage detecting circuit.
[background technology]
When the maintenance fault, might need to detect high pressure output.For example in Inductive ballast light fixture maintenance fault, the quality of detection triggers, the most directly way is exactly whether detection triggers has high pressure output usually.The output of general high pressure all at 3KV between the 5KV, there is certain insecurity in testing high voltage, therefore need to use the high pressure professional equipment to detect, and this equipment price is expensive, and also is not easy to carry.This is with regard to the safety that had influence on the light fixture maintenance and the problem of efficient.
[summary of the invention]
Based on this, be necessary to provide a kind of high-voltage detecting circuit that can detect high-tension electricity safely and efficiently.
A kind of high-voltage detecting circuit; Comprise technotron, be connected said junction field tube grid high voltage induction probe, be connected high-frequency filter capacitor between said junction field tube grid and the source electrode, three ports switch module, be used to point out the reminding module and the power module of high pressure; The control end of said switch module is connected with said technotron drain electrode; The output terminal of said switch module and said technotron source electrode, the input end of said switch module is connected with the output terminal of reminding module; The cathode output end of said power module is connected with the input end of said reminding module, the drain electrode of said technotron; And be connected divider resistance between the drain electrode of said power module cathode output end and technotron, the cathode output end of said power module is connected with said technotron source electrode; Said switch module is according to conducting or shutoff between the other two ends of voltage cut-out module of control end.
Preferably; Said switch module comprises stabilivolt and triode; Transistor base connects base resistance and said voltage stabilizing diode successively, and the stabilivolt anode is connected with base resistance, and the stabilivolt negative electrode is connected with the technotron drain electrode as the control end of switch module; Transistor emitter is connected with said technotron source electrode, and transistor collector is connected with reminding module one end.
Preferably, said divider resistance is a trimmable resistance.
Preferably, said reminding module comprises at least a in light emitting diode and the acoustical generator, said light emitting diode and acoustical generator protective resistance of connecting respectively.
Preferably, said power module is a direct supply.
Preferably, said power module also comprises the switch of connecting with direct supply.
Above-mentioned high-voltage detecting circuit adopts the high voltage induction probe; Utilize contactless detection; Obtain voltage signal after sensing high-voltage signal, the conducting of CS module and shutoff after technotron amplifies, thus high pressure is pointed out or do not pointed out to the control reminding module; Only need the device of minority can realize that simple high pressure detects, thereby efficient is higher, simple in structure, with low cost.In addition, can detect because need not to contact high-voltage signal source, security is very high.
[description of drawings]
Fig. 1 is the high-voltage detecting circuit module map of an embodiment;
Fig. 2 is the high-voltage detecting circuit schematic diagram of another preferred embodiment.
[embodiment]
As shown in Figure 1, be the high-voltage detecting circuit module map of an embodiment.This high-voltage detecting circuit comprises the switch module 200 and the reminding module 300 of high voltage induction probe J1, technotron Q1, high-frequency filter capacitor C1, power module 100, three ports.
High voltage induction probe J1 is connected technotron Q1 grid.High voltage induction probe J1 need not directly to contact high-voltage signal source, only needs to pop one's head in to get final product near high-voltage signal source.For the high pressure between the 3KV-5KV, distance of reaction is about 10cm-80cm; For the high pressure more than the 5KV, distance of reaction is about 80cm-150cm.
High-frequency filter capacitor C1 is connected between technotron Q1 grid and the source electrode, is used for other high frequency clutter filterings from high-voltage signal source.
The control end of the switch module 200 of three ports is connected with technotron Q1 drain electrode, and two ends are connected with the input end of technotron Q1 source electrode, reminding module 300 respectively in addition.The switch module 200 of three ports is according to conducting or shutoff between the voltage cut-out module 200 other two ends of control end.
The output terminal of the cathode output end of power module 100 and reminding module 300, technotron Q1 drain electrode are connected, and power module 100 cathode output ends be connected divider resistance R1 between technotron Q1 drains; The cathode output end of power module 100 is connected with technotron Q1 source electrode.Reminding module 300 is promptly done the high pressure prompting after switch module 200 conductings.
As shown in Figure 2, be the high-voltage detecting circuit schematic diagram of another preferred embodiment.
In the present embodiment, switch module 200 comprises triode Q2, base resistance R2 and stabilivolt D1.Triode Q2 base stage connects base resistance R2, stabilivolt D1 successively, and stabilivolt D1 anode is connected with base resistance R2, and stabilivolt D1 negative electrode is connected with technotron Q1 drain electrode as the control end of switch module 200; Triode Q2 emitter is connected with technotron Q1 source electrode, and triode Q2 collector is connected with reminding module 300 1 ends.The adding of stabilivolt D1 in the present embodiment is in order to improve the switching characteristic of triode Q2, to make the conducting of high-voltage signal and triode Q2 or close coordination more.
Further, divider resistance R1 is preferably trimmable resistance.Through regulating the size of divider resistance R1 resistance, can change the sensitivity of high voltage induction.
The power module 100 of present embodiment adopts direct supply BT.For preventing that high-voltage detecting circuit from working near being placed on high-voltage signal source because of accident, power module 100 also comprises the switch S 1 of connecting with direct supply BT, is preferably touch-switch.So, detecting high pressure just can be through switch control.
Below be the principle of work of this high-voltage detecting circuit of example explanation with circuit theory diagrams shown in Figure 2:
Testing staff's push switch S1 makes in the circuit each device all can be supplied power by power supply BT.
When high voltage induction probe J1 does not detect high-voltage signal, the output of technotron Q1 drain electrode no-voltage, stabilivolt D1 and triode Q2 all end, and reminding module 300 is not worked because of not connecting power supply.
As high voltage induction probe J1 during near high-voltage signal source, obtain voltage signal, this voltage signal amplifies the back through technotron Q1 and exports from drain electrode.High-voltage signal is strong more, and the voltage signal after the amplification is strong more, and then drain potential is high more; When drain potential during greater than the forward voltage sum of the reverse voltage of stabilivolt D1 and triode Q2; Stabilivolt D1 conducting, also conducting between the emitter and collector of triode Q2, this moment, LED was luminous; Acoustical generator LS sounds, and exists with the prompting high pressure.According to the actual detected situation, can also regulate the resistance of divider resistance R1 and regulate the sensitivity that high pressure detects.
High-voltage detecting circuit in the foregoing description only need the device of minority can realize that simple high pressure detects, thereby efficient is higher, simple in structure, with low cost.In addition, can detect because need not to contact high-voltage signal source, security is very high.
The above embodiment has only expressed several kinds of embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with accompanying claims.
Claims (6)
1. high-voltage detecting circuit; It is characterized in that; Comprise technotron, be connected said junction field tube grid high voltage induction probe, be connected high-frequency filter capacitor between said junction field tube grid and the source electrode, three ports switch module, be used to point out the reminding module and the power module of high pressure
The control end of said switch module is connected with said technotron drain electrode, and the output terminal of said switch module is connected with said technotron source electrode, and the input end of said switch module is connected with the output terminal of reminding module;
The cathode output end of said power module is connected with the input end of said reminding module, the drain electrode of said technotron; And be connected divider resistance between the drain electrode of said power module cathode output end and technotron, the cathode output end of said power module is connected with said technotron source electrode;
Said switch module is according to conducting or shutoff between the other two ends of voltage cut-out module of control end.
2. high-voltage detecting circuit as claimed in claim 1; It is characterized in that said switch module comprises stabilivolt and triode, transistor base connects base resistance and said voltage stabilizing diode successively; The stabilivolt anode is connected with base resistance; The stabilivolt negative electrode is connected with the technotron drain electrode as the control end of switch module, and transistor emitter is connected with said technotron source electrode, and transistor collector is connected with reminding module one end.
3. high-voltage detecting circuit as claimed in claim 1 is characterized in that, said divider resistance is a trimmable resistance.
4. high-voltage detecting circuit as claimed in claim 1 is characterized in that, said reminding module comprises at least a in light emitting diode and the acoustical generator, said light emitting diode and acoustical generator protective resistance of connecting respectively.
5. high-voltage detecting circuit as claimed in claim 1 is characterized in that, said power module is a direct supply.
6. high-voltage detecting circuit as claimed in claim 1 is characterized in that said power module also comprises the switch of connecting with direct supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100771890A CN102721918A (en) | 2011-03-29 | 2011-03-29 | High-voltage detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100771890A CN102721918A (en) | 2011-03-29 | 2011-03-29 | High-voltage detection circuit |
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| Publication Number | Publication Date |
|---|---|
| CN102721918A true CN102721918A (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100771890A Pending CN102721918A (en) | 2011-03-29 | 2011-03-29 | High-voltage detection circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837730A (en) * | 2012-11-27 | 2014-06-04 | 海洋王（东莞）照明科技有限公司 | High voltage trigger signal detection circuit |
| CN104714204A (en) * | 2013-12-16 | 2015-06-17 | 国家电网公司 | Electric energy meter testing device and system |
| CN109884385A (en) * | 2019-04-09 | 2019-06-14 | 上海汇像信息技术有限公司 | Contactless voltage detecting sensor |
| CN111337734A (en) * | 2020-03-23 | 2020-06-26 | 朔黄铁路发展有限责任公司 | Near-electricity protection circuit and near-electricity protection equipment |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86210931U (en) * | 1986-12-29 | 1987-12-12 | 徐维忠 | Multi-functional non-contact electricity tester |
| CN2078006U (en) * | 1990-08-05 | 1991-05-29 | 重庆钢铁公司 | Live line detection warning device for transmission-distribution switch cubicle |
| CN2078886U (en) * | 1990-09-08 | 1991-06-12 | 陈为凡 | Range-adjustable induction electric properties tester |
| CN2128742Y (en) * | 1992-06-26 | 1993-03-24 | 裴宏伟 | Contactless high-and low-voltage electroscope |
| US5245523A (en) * | 1989-05-09 | 1993-09-14 | United Technologies Automotive, Inc. | Power delivery circuit with current detection |
| EP0687067A2 (en) * | 1994-06-06 | 1995-12-13 | Eaton Corporation | Short circuit protector for an isolated power MOSFET output stage |
| CN1847862A (en) * | 2006-05-12 | 2006-10-18 | 康素成 | Acoustooptically prompting multifunctional test pencil circuit |
| CN200962127Y (en) * | 2006-11-01 | 2007-10-17 | 珠海优特电力科技股份有限公司 | A high voltage electrical display lock device |
| CN201600406U (en) * | 2010-02-06 | 2010-10-06 | 张金华 | High voltage acousto-optic electroscope |
-
2011
- 2011-03-29 CN CN2011100771890A patent/CN102721918A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86210931U (en) * | 1986-12-29 | 1987-12-12 | 徐维忠 | Multi-functional non-contact electricity tester |
| US5245523A (en) * | 1989-05-09 | 1993-09-14 | United Technologies Automotive, Inc. | Power delivery circuit with current detection |
| US5245523B1 (en) * | 1989-05-09 | 1997-06-24 | United Technologies Automotive | Power delivery circuit with current detection |
| CN2078006U (en) * | 1990-08-05 | 1991-05-29 | 重庆钢铁公司 | Live line detection warning device for transmission-distribution switch cubicle |
| CN2078886U (en) * | 1990-09-08 | 1991-06-12 | 陈为凡 | Range-adjustable induction electric properties tester |
| CN2128742Y (en) * | 1992-06-26 | 1993-03-24 | 裴宏伟 | Contactless high-and low-voltage electroscope |
| EP0687067A2 (en) * | 1994-06-06 | 1995-12-13 | Eaton Corporation | Short circuit protector for an isolated power MOSFET output stage |
| CN1847862A (en) * | 2006-05-12 | 2006-10-18 | 康素成 | Acoustooptically prompting multifunctional test pencil circuit |
| CN200962127Y (en) * | 2006-11-01 | 2007-10-17 | 珠海优特电力科技股份有限公司 | A high voltage electrical display lock device |
| CN201600406U (en) * | 2010-02-06 | 2010-10-06 | 张金华 | High voltage acousto-optic electroscope |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837730A (en) * | 2012-11-27 | 2014-06-04 | 海洋王（东莞）照明科技有限公司 | High voltage trigger signal detection circuit |
| CN104714204A (en) * | 2013-12-16 | 2015-06-17 | 国家电网公司 | Electric energy meter testing device and system |
| CN109884385A (en) * | 2019-04-09 | 2019-06-14 | 上海汇像信息技术有限公司 | Contactless voltage detecting sensor |
| CN111337734A (en) * | 2020-03-23 | 2020-06-26 | 朔黄铁路发展有限责任公司 | Near-electricity protection circuit and near-electricity protection equipment |
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Application publication date: 20121010 |