CN205374643U - Sensor security detection circuitry is put in office - Google Patents
Sensor security detection circuitry is put in office Download PDFInfo
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- CN205374643U CN205374643U CN201520768966.XU CN201520768966U CN205374643U CN 205374643 U CN205374643 U CN 205374643U CN 201520768966 U CN201520768966 U CN 201520768966U CN 205374643 U CN205374643 U CN 205374643U
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Abstract
The utility model discloses a sensor security detection circuitry is put in office, including wireless transceiver circuit (a), 555 timing detection circuit (b), demonstration and press unit (c) and interface circuit (d), wireless transceiver circuit (a), demonstration and press unit (c), interface circuit (d) all with the 555 timing detection circuit (b) be connected, the utility model discloses can realize detecting built -in sensor security problem through security detection device, data processing service ware end be sent through wireless mode to the result that will detect. Thereby avoided because the security problem causes the injury to test equipment and life safety.
Description
Technical field
This utility model relates to Partial Discharge Data management domain, particularly relates to a kind of office and puts sensor safe testing circuit and method.
Background technology
GIS is visual plant conventional in power system, shelf depreciation can be produced when GIS portion exists insulation defect, by the detection of shelf depreciation can judge the state of insulation of switchgear effectively, effectively detection shelf depreciation is significant to the safe and stable operation guaranteeing out GIS.
In the detection method of the internal local discharge signal of current GIS, hyperfrequency method is to realize the practical feasible method of GIS partial discharge on-line monitoring at present.Hyperfrequency method, is utilize sensor to receive the electromagnetic wave of the discharge excited 300MHz to 3GHz in local to monitor shelf depreciation, and therefore built-in uhf sensor plays decisive role.
But for the built-in superfrequency sensor of GIS of some producer's model, due to design reasons, it is possible to have induced voltage at signal exit.When operator carry out detection work and plug signal connector time, this induced voltage is likely to life safety and detecting instrument equipment are worked the mischief.The signal output port of general built-in sensors is N Connector, including core and housing shroud ground connection two parts.Housing shroud is connected with the shell of GIS and is directly grounded, and therefore shell is safe.But the core of built-in sensors is likely to be due to design problem, fail to be directly grounded, and core is likely to be due to capacity effect and has induced voltage, and life safety and detecting instrument equipment are worked the mischief.
Utility model content
The purpose of this utility model is to solve due to design or some other reason ground connection are unreliable and the safety issue that causes, it is to avoid core produces induced voltage and damages test equipment or the person's of causing personal safety injures because of capacity effect.
Technical solutions of the utility model are as follows:
Sensor (local discharge sensor) safety testing circuit is put in a kind of office, including wireless transceiver circuit, 555 timely checking circuits, display and push-button unit and interface circuit, wireless transceiver circuit, display and push-button unit, interface circuit are all connected with 555 timely checking circuits；
555 timely checking circuits include multi-resonant oscillating circuit, and multi-resonant oscillating circuit includes 555 intervalometers, the first resistance R1, the second resistance R2, the first electric capacity C1, the second electric capacity C2, the first relay K 1 and the second relay K 2；First resistance R1 is connected to reset terminal and the discharge end of 555 intervalometers, reset terminal connects power end, relay K the 1, second resistance R2 is connected to the discharge end of 555 intervalometers and triggers between end after being connected in series, trigger end, threshold value end is connected, first electric capacity C1, relay K 2 are connected between triggering end and the earth terminal of 555 intervalometers after being connected in series, the second electric capacity C2 is connected between control voltage end and the earth terminal of 555 intervalometers.
More preferably, wireless transceiver circuit is Zigbee module, integrated enhanced 8051CPU and the ZigBee radio receiving transmitting module of Zigbee module, scheme relative to traditional CPU+ radio transmitting and receiving chip, decrease peripheral hardware quantity, reduce system cost, additionally as the output pulse receiving 555 timer output ends, in order to calculate resistance and the capacitance of test.Then test result is uploaded to data processing server and make prompting, it is determined that the safety of sensor.
More preferably, the second electric capacity C2 is 100nF.
Compared with prior art, this utility model beneficial effect includes:
Sensor safe testing circuit is put in the open a kind of office of this utility model, can realize built-in sensor safe sex chromosome mosaicism is detected by safety detection device, the result of detection is wirelessly sent to data processing server end, thus avoiding owing to test equipment and life are damaged safely by safety issue.
Accompanying drawing explanation
Fig. 1 is that sensor safe testing circuit schematic diagram is put in this utility model one office；
Fig. 2 is multi-resonant oscillating circuit circuit diagram；
Fig. 3 is that this utility model measures circuit diagram during core end resistance over the ground；
Fig. 4 is that this utility model measures circuit diagram during core end electric capacity over the ground.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is further described.
As shown in Figure 1, sensor safe testing circuit is put in a kind of office, all it is connected with 555 timely checking circuit b including wireless transceiver circuit a, 555 timely checking circuit b, display and push-button unit c and interface circuit d, wireless transceiver circuit a, display and push-button unit c, interface circuit d；
555 timely checking circuits include multi-resonant oscillating circuit, as in figure 2 it is shown, multi-resonant oscillating circuit includes 555 intervalometers, the first resistance R1, the second resistance R2, the first electric capacity C1, the second electric capacity C2, the first relay K 1 and the second relay K 2；First resistance R1 is connected to the reset terminal RST and discharge end DIS of 555 intervalometers, reset terminal RST connects power end VCC, relay K the 1, second resistance R2 is connected to the discharge end DIS of 555 intervalometers and triggers between end TRI after being connected in series, trigger end TRI, threshold value end THR to be connected, first electric capacity C1, relay K 2 are connected between triggering end TRI and the earth terminal GND of 555 intervalometers after being connected in series, the second electric capacity C2 is connected between control voltage end CON and the earth terminal GND of 555 intervalometers.Second electric capacity C2 is 100nF.
Wireless transceiver circuit a is Zigbee module, Zigbee module integrates enhancement mode 8051CPU and ZigBee radio receiving transmitting module, scheme relative to traditional CPU+ radio transmitting and receiving chip, decrease peripheral hardware quantity, reduce system cost, additionally as receiving 555 intervalometer OUT terminal output pulses, in order to calculate resistance and the capacitance of test.Then test result is uploaded to data processing server and make prompting, it is determined that the safety of sensor.
This utility model office puts sensor safe testing circuit and includes the resistance measurement over the ground of core end and the capacitance measurement over the ground of core end.
As shown in Figure 3, when to the resistance measurement over the ground of core end, disconnect the first relay K 1, the core end that office puts sensor is connected to the discharge end of 555 intervalometers, office puts the shell end of sensor and is connected to triggering end, and the resistance measured between discharge end and triggering end is measure the resistance of core end resistance RX over the ground；
555 intervalometer monostable circuit 555 timely checking circuits produce impulse waveform, and the trigger within 555 intervalometers overturns, and outfan obtains continually varying oscillating impulse waveform；
Read the low and high level of the outfan of 555 intervalometers, obtain the resistance value of core end resistance RX over the ground.
As shown in Figure 4, when measuring core end capacitance over the ground, disconnect the second relay K 2, the core end that office puts sensor is connected to the triggering end of 555 intervalometers, office puts the shell of sensor and is connected to earth terminal, and triggering the capacitance measured between end and earth terminal is the capacitance measuring core end direct-to-ground capacitance CX；
555 intervalometer monostable circuit 555 timely checking circuits produce impulse waveform, trigger within 555 intervalometers overturns, obtaining continually varying oscillating impulse waveform at outfan, the outfan low and high level reading 555 intervalometers obtains out the capacitance of core end electric capacity CX over the ground.
The above is only preferred implementation of the present utility model; it is noted that, for those skilled in the art; under the premise without departing from this utility model principle, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (3)
1. sensor safe testing circuit is put in an office, it is characterized in that, including wireless transceiver circuit (a), 555 timely checking circuits (b), display and push-button unit (c) and interface circuit (d), described wireless transceiver circuit (a), display and push-button unit (c), interface circuit (d) are all connected with described 555 timely checking circuits (b)；
Described 555 timely checking circuits include multi-resonant oscillating circuit, and described multi-resonant oscillating circuit includes 555 intervalometers, the first resistance R1, the second resistance R2, the first electric capacity C1, the second electric capacity C2, the first relay K 1 and the second relay K 2；First resistance R1 is connected to the reset terminal RST and discharge end DIS of 555 intervalometers, reset terminal RST connects power end VCC, described relay K the 1, second resistance R2 is connected to the discharge end DIS of 555 intervalometers and triggers between end TRI after being connected in series, described triggering end TRI, threshold value end THR are connected, described first electric capacity C1, relay K 2 are connected between triggering end TRI and the earth terminal GND of 555 intervalometers after being connected in series, described second electric capacity C2 is connected between control voltage end CON and the earth terminal GND of 555 intervalometers.
2. sensor safe testing circuit is put in a kind of office according to claim 1, it is characterised in that described wireless transceiver circuit (a) is Zigbee module.
3. sensor safe testing circuit is put in a kind of office according to claim 1, it is characterised in that described second electric capacity C2 is 100nF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520768966.XU CN205374643U (en) | 2015-09-30 | 2015-09-30 | Sensor security detection circuitry is put in office |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520768966.XU CN205374643U (en) | 2015-09-30 | 2015-09-30 | Sensor security detection circuitry is put in office |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205374643U true CN205374643U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520768966.XU Active CN205374643U (en) | 2015-09-30 | 2015-09-30 | Sensor security detection circuitry is put in office |
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| Country | Link |
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| CN (1) | CN205374643U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158635A (en) * | 2015-09-30 | 2015-12-16 | 国家电网公司 | Partial-discharge sensor safety detection circuit and method |
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2015
- 2015-09-30 CN CN201520768966.XU patent/CN205374643U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158635A (en) * | 2015-09-30 | 2015-12-16 | 国家电网公司 | Partial-discharge sensor safety detection circuit and method |
| CN105158635B (en) * | 2015-09-30 | 2018-06-01 | 国家电网公司 | A kind of partial discharge sensor safe detection circuit and method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210000, Jiangsu, Jiangning Development Zone, Nanjing, the source of the road, No. 58, -5 Co-patentee after: JIANGSU ELECTRIC POWER Co. Patentee after: State Grid Corporation of China Co-patentee after: STATE GRID JIANGSU ELECTRIC POWER Co.,Ltd. MAINTENANCE BRANCH Address before: 210000, Jiangsu, Jiangning Development Zone, Nanjing, the source of the road, No. 58, -5 Co-patentee before: JIANGSU ELECTRIC POWER Co. Patentee before: State Grid Corporation of China Co-patentee before: MAINTENANCE DIVISION OF STATE GRID JIANGSU ELECTRIC POWER Co. Address after: 210000, Jiangsu, Jiangning Development Zone, Nanjing, the source of the road, No. 58, -5 Co-patentee after: JIANGSU ELECTRIC POWER Co. Patentee after: State Grid Corporation of China Co-patentee after: MAINTENANCE DIVISION OF STATE GRID JIANGSU ELECTRIC POWER Co. Address before: 210000, Jiangsu, Jiangning Development Zone, Nanjing, the source of the road, No. 58, -5 Co-patentee before: JIANGSU ELECTRIC POWER Co. Patentee before: State Grid Corporation of China Co-patentee before: JIANGSU ELECTRIC POWER COMPANY MAINTENANCE BRANCH |