CN103487635A - High voltage induction wireless electrified indicating device - Google Patents
High voltage induction wireless electrified indicating device Download PDFInfo
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- CN103487635A CN103487635A CN201310469259.6A CN201310469259A CN103487635A CN 103487635 A CN103487635 A CN 103487635A CN 201310469259 A CN201310469259 A CN 201310469259A CN 103487635 A CN103487635 A CN 103487635A
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- 230000006698 induction Effects 0.000 title claims abstract description 15
- 238000002955 isolation Methods 0.000 claims abstract description 35
- 238000005070 sampling Methods 0.000 claims abstract description 29
- 239000000523 sample Substances 0.000 claims abstract description 27
- 230000001939 inductive effect Effects 0.000 claims abstract description 15
- 230000008878 coupling Effects 0.000 claims description 30
- 238000010168 coupling process Methods 0.000 claims description 30
- 238000005859 coupling reaction Methods 0.000 claims description 30
- 230000003287 optical effect Effects 0.000 claims description 30
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000004891 communication Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention relates to a high voltage induction wireless electrified indicating device. The high voltage induction wireless electrified indicating device comprises a passive sensor inductive probe, a high voltage contact detection circuit, a three-phase high-voltage sampling circuit, a voltage reduction lightning protection circuit, a rectification display circuit, an opto-coupler isolation circuit and an electrified indicator, wherein the passive sensor inductive probe is in wireless connection with the electrified indicator, the output end of the three-phase high-voltage sampling circuit is electrically connected with the input end of the voltage reduction lightning protection circuit, the output end of the voltage reduction lightning protection circuit is electrically connected with the input end of the rectification display circuit, the output end of the rectification display circuit is electrically connected with the corresponding connecting end of the opto-coupler isolation circuit, the input end of the high voltage contact detection circuit is electrically connected with the electrified indicator, and the output end of the high voltage contact detection circuit is electrically connected with the corresponding connecting end of the opto-coupler isolation circuit. According to the high voltage induction wireless electrified indicating device, wireless communication can be achieved, and the safety is high.
Description
Technical field
The present invention is specifically related to a kind of high voltage induction wireless live indicating device.
Background technology
The present invention is applicable to wind-force, the change of photovoltaic case need to be passed to the occasion that electromagnetic lock is opened the door and closes the door the high pressure box type substation door to high-voltage signal at 6KV-40.5KV, need to reach the anti-safety standards of country electric five.
Existing is that sensor is connected by wired mode with high-voltage charge display device, and utilize the capacitance decompression principle, the high-voltage signal that sensor is collected converts low pressure to, be sent to again high-voltage charge display device, control electromagnetic lock by high-voltage charge display device, to reach the control that the high pressure box type substation door is opened the door and closes the door; And there is following shortcoming in this device, described high pressure sensor volume is large, the quality weight, when the installation high-voltage sensor, must consider the factors such as electric arc between three-phase voltage and safety creepage distance, therefore, need to increase the enclosure volume of phase transformation, so also just increased production cost; In addition, because sensor is connected by wired mode with high-voltage charge display device, connecting line easily produces situation aging and electric leakage like this, and the meeting crisis, to personal safety, has potential safety hazard.
Summary of the invention
The objective of the invention is: provide a kind of can radio communication, and safe high voltage induction wireless live indicating device, to overcome the deficiencies in the prior art.
In order to achieve the above object, technical scheme of the present invention: a kind of high voltage induction wireless live indicating device,
Comprise passive sensor inductive probe, high-voltage contact testing circuit, three-phase high-voltage sample circuit, step-down lightning protection circuit, rectification display circuit, optical coupling isolation circuit, potential indicator;
Described passive sensor inductive probe and potential indicator wireless connections, the output terminal of three-phase high-voltage sample circuit is electrically connected to the input end of step-down lightning protection circuit, the output terminal of step-down lightning protection circuit is electrically connected to the input end of rectification display circuit, the output terminal of rectification display circuit is electrically connected to the corresponding link of optical coupling isolation circuit, the input end of high-voltage contact testing circuit is electrically connected to potential indicator, and the output terminal of high-voltage contact testing circuit is electrically connected to the corresponding link of optical coupling isolation circuit.
In technique scheme, described three-phase high-voltage sample circuit comprises A phase high-pressure sampling splicing ear V
a, B phase high-pressure sampling splicing ear V
bwith C phase high-pressure sampling splicing ear V
c, described A phase high-pressure sampling splicing ear V
a, B phase high-pressure sampling splicing ear V
bwith C phase high-pressure sampling splicing ear V
cwith the corresponding link of step-down lightning protection circuit, be electrically connected to respectively.
In technique scheme, described step-down lightning protection circuit comprises A phase step-down lightning protection circuit, B phase step-down lightning protection circuit and C phase step-down lightning protection circuit, the output terminal of A phase high-pressure sampling circuit is electrically connected to the input end of A phase step-down lightning protection circuit, the output terminal of B phase high-pressure sampling circuit is electrically connected to the input end of B phase step-down lightning protection circuit, the output terminal of C phase high-pressure sampling circuit is electrically connected to the input end of C phase step-down lightning protection circuit, the output terminal of A phase step-down lightning protection circuit, the output terminal that the output terminal of the output terminal of B phase step-down lightning protection circuit and C phase step-down lightning protection circuit is the step-down lightning protection circuit.
In technique scheme, described rectification display circuit comprises the first rectification display circuit, the second rectification display circuit and the 3rd rectification display circuit, the output terminal of A phase step-down lightning protection circuit is electrically connected to the input end of the first rectification display circuit, the output terminal of B phase step-down lightning protection circuit is electrically connected to the input end of the second rectification display circuit, the output terminal of C phase step-down lightning protection circuit is electrically connected to the input end of the 3rd rectification display circuit, the output terminal of the first rectification display circuit, the output terminal that the output terminal of the output terminal of the second rectification display circuit and the 3rd rectification display circuit is the rectification display circuit.
In technique scheme, described optical coupling isolation circuit comprises the first optical coupling isolation circuit, the second optical coupling isolation circuit and the 3rd optical coupling isolation circuit, the output terminal of the first rectification display circuit is electrically connected to the corresponding input end of the first optical coupling isolation circuit, the output terminal of the second rectification display circuit is electrically connected to the corresponding input end of the second optical coupling isolation circuit, and the output terminal of the 3rd rectification display circuit is electrically connected to the corresponding input end of the 3rd optical coupling isolation circuit.
The good effect that the present invention has is: after adopting above-mentioned high voltage induction wireless live indicating device, during use, the high-voltage contact testing circuit is electrically connected to the high-voltage control circuit of host computer, the three-phase high-voltage sample circuit is electrically connected to the three-phase voltage of high pressure, three-phase high-voltage carries out the step-down lightning protection successively by sample circuit, rectification and light-coupled isolation, make the staff can know in time the duty of three-phase voltage, and the passive sensor inductive probe is arranged on bushing A, B, near the C three-phase, the passive sensor inductive probe is sent to potential indicator by the high pressure data that collect with binary wireless mode, and the signal that potential indicator receives is sent into host computer and is analyzed and process, and send steering order and trigger the A that the high-voltage contact testing circuit makes electrification display, B, the C lamp is bright, the device of this detection electrification in high voltage, not only production cost is low, volume is little, and highly sensitive.
The accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of a kind of concrete enforcement of the present invention.
Embodiment
Below in conjunction with accompanying drawing and the embodiment that provides, the present invention is further illustrated, but be not limited to this.
As shown in Figure 1, a kind of high voltage induction wireless live indicating device, comprise passive sensor inductive probe 1, high-voltage contact testing circuit 2, three-phase high-voltage sample circuit 3, step-down lightning protection circuit 4, rectification display circuit 5, optical coupling isolation circuit 6, potential indicator 7; Described passive sensor inductive probe 1 and potential indicator 7 wireless connections, the output terminal of three-phase high-voltage sample circuit 3 is electrically connected to the input end of step-down lightning protection circuit 4, the output terminal of step-down lightning protection circuit 4 is electrically connected to the input end of rectification display circuit 5, the output terminal of rectification display circuit 5 is electrically connected to the corresponding link of optical coupling isolation circuit 6, the input end of high-voltage contact testing circuit 2 is electrically connected to potential indicator 7, and the output terminal of high-voltage contact testing circuit 2 is electrically connected to the corresponding link of optical coupling isolation circuit 6.
It is ZY6000P that passive sensor inductive probe 1 of the present invention is preferably selected model, during use, passive sensor inductive probe 1 is fixed on to the bottom of bushing, and be screwed, described passive sensor inductive probe 1 is to utilize magnetic field and electric principle to realize wireless measurement voltage, and send the timely locking electromagnetic lock of wireless instructions, really realize wireless high-voltage " five is anti-" effect.
As shown in Figure 1, described three-phase high-voltage sample circuit 3 comprises A phase high-pressure sampling splicing ear V
a, B phase high-pressure sampling splicing ear V
bwith C phase high-pressure sampling splicing ear V
c, described A phase high-pressure sampling splicing ear V
a, B phase high-pressure sampling splicing ear V
bwith C phase high-pressure sampling splicing ear V
cwith the corresponding link of step-down lightning protection circuit 4, be electrically connected to respectively.
As shown in Figure 1, described step-down lightning protection circuit 4 comprises A phase step-down lightning protection circuit 4-1, B phase step-down lightning protection circuit 4-2 and C phase step-down lightning protection circuit 4-3, the output terminal of A phase high-pressure sampling circuit 3-1 is electrically connected to the input end of A phase step-down lightning protection circuit 4-1, the output terminal of B phase high-pressure sampling circuit 3-2 is electrically connected to the input end of B phase step-down lightning protection circuit 4-2, the output terminal of C phase high-pressure sampling circuit 3-3 is electrically connected to the input end of C phase step-down lightning protection circuit 4-3, the output terminal of A phase step-down lightning protection circuit 4-1, the output terminal that the output terminal of the output terminal of B phase step-down lightning protection circuit 4-2 and C phase step-down lightning protection circuit 4-3 is step-down lightning protection circuit 4.
As shown in Figure 1, described rectification display circuit 5 comprises the first rectification display circuit 5-1, the second rectification display circuit 5-2 and the 3rd rectification display circuit 5-3, the output terminal of A phase step-down lightning protection circuit 4-1 is electrically connected to the input end of the first rectification display circuit 5-1, the output terminal of B phase step-down lightning protection circuit 4-2 is electrically connected to the input end of the second rectification display circuit 5-2, the output terminal of C phase step-down lightning protection circuit 4-3 is electrically connected to the input end of the 3rd rectification display circuit 5-3, the output terminal of the first rectification display circuit 5-1, the output terminal that the output terminal of the output terminal of the second rectification display circuit 5-2 and the 3rd rectification display circuit 5-3 is rectification display circuit 5.
As shown in Figure 1, described optical coupling isolation circuit 6 comprises the first optical coupling isolation circuit 6-1, the second optical coupling isolation circuit 6-2 and the 3rd optical coupling isolation circuit 6-3, the output terminal of the first rectification display circuit 5-1 is electrically connected to the corresponding input end of the first optical coupling isolation circuit 6-1, the output terminal of the second rectification display circuit 5-2 is electrically connected to the corresponding input end of the second optical coupling isolation circuit 6-2, and the output terminal of the 3rd rectification display circuit 5-3 is electrically connected to the corresponding input end of the 3rd optical coupling isolation circuit 6-3.
The course of work of the present invention, during use, high-voltage contact testing circuit 2 is electrically connected to the high-voltage control circuit of host computer, three-phase high-voltage sample circuit 3 is electrically connected to the three-phase voltage of high pressure, three-phase high-voltage carries out the step-down lightning protection successively, rectification and light-coupled isolation, make the staff can know in time the duty of three-phase voltage, and passive sensor inductive probe 1 is arranged on bushing A, B, near the C three-phase, passive sensor inductive probe 1 is sent to potential indicator 7 by the high pressure data that collect with binary wireless mode, and the signal that potential indicator 7 receives is sent into host computer and is analyzed and process, and send steering order and trigger the A that high-voltage contact testing circuit 2 makes electrification display, B, the C lamp is bright, remind the maintainer to note the high electricity that is pressed with, potential indicator 7 is controlled electromagnetic lock by wireless mode again, when height is pressed with electricity, the action cabinet body door of electromagnetic lock is locked, avoid personnel to contact inner electrical equipment generation Danger Electric shock risk, when high pressure does not have electricity, electromagnetic lock can be dead electric cabinet door lock, need could further open electric cabinet door with private key, and carry out internal check, the device of this detection electrification in high voltage, not only production cost is low, volume is little, and highly sensitive.
Claims (5)
1. a high voltage induction wireless live indicating device is characterized in that:
Comprise passive sensor inductive probe (1), high-voltage contact testing circuit (2), three-phase high-voltage sample circuit (3), step-down lightning protection circuit (4), rectification display circuit (5), optical coupling isolation circuit (6), potential indicator (7);
Described passive sensor inductive probe (1) and potential indicator (7) wireless connections, the output terminal of three-phase high-voltage sample circuit (3) is electrically connected to the input end of step-down lightning protection circuit (4), the output terminal of step-down lightning protection circuit (4) is electrically connected to the input end of rectification display circuit (5), the output terminal of rectification display circuit (5) is electrically connected to the corresponding link of optical coupling isolation circuit (6), the input end of high-voltage contact testing circuit (2) is electrically connected to potential indicator (7), the output terminal of high-voltage contact testing circuit (2) is electrically connected to the corresponding link of optical coupling isolation circuit (6).
2. high voltage induction wireless live indicating device according to claim 1, it is characterized in that: described three-phase high-voltage sample circuit (3) comprises A phase high-pressure sampling splicing ear V
a, B phase high-pressure sampling splicing ear V
bwith C phase high-pressure sampling splicing ear V
c, described A phase high-pressure sampling splicing ear V
a, B phase high-pressure sampling splicing ear V
bwith C phase high-pressure sampling splicing ear V
cwith the corresponding link of step-down lightning protection circuit (4), be electrically connected to respectively.
3. high voltage induction wireless live indicating device according to claim 2, it is characterized in that: described step-down lightning protection circuit (4) comprises A phase step-down lightning protection circuit (4-1), B phase step-down lightning protection circuit (4-2) and C phase step-down lightning protection circuit (4-3), the output terminal of A phase high-pressure sampling circuit (3-1) is electrically connected to the input end of A phase step-down lightning protection circuit (4-1), the output terminal of B phase high-pressure sampling circuit (3-2) is electrically connected to the input end of B phase step-down lightning protection circuit (4-2), the output terminal of C phase high-pressure sampling circuit (3-3) is electrically connected to the input end of C phase step-down lightning protection circuit (4-3), the output terminal of A phase step-down lightning protection circuit (4-1), the output terminal that the output terminal of the output terminal of B phase step-down lightning protection circuit (4-2) and C phase step-down lightning protection circuit (4-3) is step-down lightning protection circuit (4).
4. high voltage induction wireless live indicating device according to claim 3, it is characterized in that: described rectification display circuit (5) comprises the first rectification display circuit (5-1), the second rectification display circuit (5-2) and the 3rd rectification display circuit (5-3), the output terminal of A phase step-down lightning protection circuit (4-1) is electrically connected to the input end of the first rectification display circuit (5-1), the output terminal of B phase step-down lightning protection circuit (4-2) is electrically connected to the input end of the second rectification display circuit (5-2), the output terminal of C phase step-down lightning protection circuit (4-3) is electrically connected to the input end of the 3rd rectification display circuit (5-3), the output terminal of the first rectification display circuit (5-1), the output terminal that the output terminal of the output terminal of the second rectification display circuit (5-2) and the 3rd rectification display circuit (5-3) is rectification display circuit (5).
5. high voltage induction wireless live indicating device according to claim 4, it is characterized in that: described optical coupling isolation circuit (6) comprises the first optical coupling isolation circuit (6-1), the second optical coupling isolation circuit (6-2) and the 3rd optical coupling isolation circuit (6-3), the output terminal of the first rectification display circuit (5-1) is electrically connected to the corresponding input end of the first optical coupling isolation circuit (6-1), the output terminal of the second rectification display circuit (5-2) is electrically connected to the corresponding input end of the second optical coupling isolation circuit (6-2), the output terminal of the 3rd rectification display circuit (5-3) is electrically connected to the corresponding input end of the 3rd optical coupling isolation circuit (6-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310469259.6A CN103487635A (en) | 2013-10-10 | 2013-10-10 | High voltage induction wireless electrified indicating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310469259.6A CN103487635A (en) | 2013-10-10 | 2013-10-10 | High voltage induction wireless electrified indicating device |
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| Publication Number | Publication Date |
|---|---|
| CN103487635A true CN103487635A (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310469259.6A Pending CN103487635A (en) | 2013-10-10 | 2013-10-10 | High voltage induction wireless electrified indicating device |
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| CN (1) | CN103487635A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403758A (en) * | 2015-12-03 | 2016-03-16 | 中色科技股份有限公司 | Intelligent safety bracelet for maintenance and debugging of direct-current electrical equipment |
| CN105403757A (en) * | 2015-12-03 | 2016-03-16 | 中色科技股份有限公司 | Intelligent safety bracelet for maintenance and debugging of alternating-current electrical equipment |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2497317Y (en) * | 2001-02-13 | 2002-06-26 | 福州福开天宝电器有限公司 | Passive-driven photosolating high-voltage live-display protector |
| CN2916643Y (en) * | 2006-06-08 | 2007-06-27 | 余永松 | Display for high-voltage charged display apparatus |
| CN2924544Y (en) * | 2006-05-25 | 2007-07-18 | 卢景华 | High voltage hot-line display device |
| CN200962129Y (en) * | 2006-11-01 | 2007-10-17 | 珠海优特电力科技股份有限公司 | A high voltage electrification display lock device |
| CN200962130Y (en) * | 2006-11-01 | 2007-10-17 | 珠海优特电力科技股份有限公司 | A radio high-voltage electrification display lock device |
| CN201266216Y (en) * | 2008-06-23 | 2009-07-01 | 厦门安达兴电气有限公司 | High voltage electrified monitoring indication device |
| CN101487857A (en) * | 2009-02-27 | 2009-07-22 | 常州市盈能电气有限公司 | High voltage electrified display locking apparatus |
| CN102185360A (en) * | 2011-02-25 | 2011-09-14 | 常州市盈能电气有限公司 | High-voltage charged display locking device |
| CN102565513A (en) * | 2012-02-28 | 2012-07-11 | 苏州苏海亚电气有限公司 | High-voltage presence indication locking device |
| CN102608399A (en) * | 2012-04-12 | 2012-07-25 | 苏州苏海亚电气有限公司 | High-voltage electrified display locking device |
| CN203180652U (en) * | 2013-04-28 | 2013-09-04 | 四川省电力公司广安华蓥供电局 | Five-prevention electric display locking system |
-
2013
- 2013-10-10 CN CN201310469259.6A patent/CN103487635A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2497317Y (en) * | 2001-02-13 | 2002-06-26 | 福州福开天宝电器有限公司 | Passive-driven photosolating high-voltage live-display protector |
| CN2924544Y (en) * | 2006-05-25 | 2007-07-18 | 卢景华 | High voltage hot-line display device |
| CN2916643Y (en) * | 2006-06-08 | 2007-06-27 | 余永松 | Display for high-voltage charged display apparatus |
| CN200962129Y (en) * | 2006-11-01 | 2007-10-17 | 珠海优特电力科技股份有限公司 | A high voltage electrification display lock device |
| CN200962130Y (en) * | 2006-11-01 | 2007-10-17 | 珠海优特电力科技股份有限公司 | A radio high-voltage electrification display lock device |
| CN201266216Y (en) * | 2008-06-23 | 2009-07-01 | 厦门安达兴电气有限公司 | High voltage electrified monitoring indication device |
| CN101487857A (en) * | 2009-02-27 | 2009-07-22 | 常州市盈能电气有限公司 | High voltage electrified display locking apparatus |
| CN102185360A (en) * | 2011-02-25 | 2011-09-14 | 常州市盈能电气有限公司 | High-voltage charged display locking device |
| CN102565513A (en) * | 2012-02-28 | 2012-07-11 | 苏州苏海亚电气有限公司 | High-voltage presence indication locking device |
| CN102608399A (en) * | 2012-04-12 | 2012-07-25 | 苏州苏海亚电气有限公司 | High-voltage electrified display locking device |
| CN203180652U (en) * | 2013-04-28 | 2013-09-04 | 四川省电力公司广安华蓥供电局 | Five-prevention electric display locking system |
Non-Patent Citations (1)
| Title |
|---|
| 王宇宁等: "高压带电显示闭锁装置的设计与开发", 《机械设计与制造》, no. 7, 31 July 2009 (2009-07-31) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403758A (en) * | 2015-12-03 | 2016-03-16 | 中色科技股份有限公司 | Intelligent safety bracelet for maintenance and debugging of direct-current electrical equipment |
| CN105403757A (en) * | 2015-12-03 | 2016-03-16 | 中色科技股份有限公司 | Intelligent safety bracelet for maintenance and debugging of alternating-current electrical equipment |
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Application publication date: 20140101 |