CN108663564A - A kind of two-in-one sensor for high voltage electroscope - Google Patents
A kind of two-in-one sensor for high voltage electroscope Download PDFInfo
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- CN108663564A CN108663564A CN201810748406.6A CN201810748406A CN108663564A CN 108663564 A CN108663564 A CN 108663564A CN 201810748406 A CN201810748406 A CN 201810748406A CN 108663564 A CN108663564 A CN 108663564A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
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Abstract
The invention belongs to electroscope fields, are related to a kind of two-in-one sensor for high voltage electroscope, are mainly made of electric-field sensor, contact probe, non-contact type signal modulate circuit and touch signal conditioning circuit.Electric-field sensor is mainly made of middle layer and electric field induction electrode, for measuring electric field strength；Contact probe is mainly made of Metal contact electrode and suspension earth polar, verifies whether that there are high pressures by contacting electrical body；Non-contact type signal modulate circuit is mainly made of reduction voltage circuit, filter circuit and rectification circuit, is connected with electric-field sensor signal output lead, the induced voltage for improving electric-field sensor output；Contact signal conditioning circuit is mainly made of current-limiting circuit, scaling circuit and filter circuit, is connected with contact probe signal output lead.Compact of the present invention is portable, can realize contact electrical verification and non-contact type electricity checking under hyperbaric environment, substantially increases the reliability and safety coefficient of electrical verification result.
Description
Technical field
The invention belongs to electroscope technical fields, are related to a kind of two-in-one sensor for high voltage electroscope.
Background technology
Electric power overhaul industry is a high risk industries, and electric power safety accident happens occasionally.High voltage electroscope is electric power overhaul
Most common tool, presently most used high voltage electroscope are capacitive high voltage electroscope, currently on the market common capacitance point
Pressure type electroscope, working mechanism be will flow through in equipment over the ground the size of current of stray capacitance as judging whether electrical body stops
The foundation only powered is detected by way of holding telescopic insulating bar, exports the alarm signal of acoustooptic form.Due to capacitive
The equipotential line distribution that the contact probe head of high voltage electroscope is crossed over is different, and capacitive high voltage electroscope has wrong report police region and refuses to submit
Police region.
The research hotspot in current electroscope field is contactless high voltage electroscope, and common scheme has based on UV detection
Method, the electric-field sensor based on Pockel effects, the electric-field sensor based on MEMS technology, however not based on UV detection method
Suitable for low-voltage-grade, the electric-field sensor based on Pockel effects and the electric-field sensor based on MEMS technology are then of high cost
It is high, and stability is not high.And common double copper sheet electric-field sensors then due between copper sheet medium with apart from unstable, surely
It is qualitative inadequate.
Therefore that there are stability is insufficient, safety coefficient is inadequate for high voltage electroscope sensor in the prior art, with high costs,
It is also easy to produce false alarm, refuses to submit the defects of alert.
Invention content
It is an object of the present invention to solve the above-mentioned problems, provide a kind of two-in-one sensing for high voltage electroscope
Whether device can pass sequentially through non-contact object of being verified with the mode contacted with high-voltage electricity under hyperbaric environment.The present invention can be big
The big reliability for improving electrical verification, reduces the cost of sensor.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of two-in-one sensor for high voltage electroscope, mainly by electric-field sensor, contact probe, contactless
Signal conditioning circuit and touch signal conditioning circuit composition；
The electric-field sensor is mainly made of middle layer 2 and electric field induction electrode 3, for measuring electric field strength；Institute
The middle layer 2 stated is cylindrical structure, and center is provided with and 1 matched through-hole of Metal contact electrode；The electric field induction electricity
Pole 3 is circular ring shape laminated structure, is pasted onto the upper and lower surface of middle layer 2, upper and lower two electric field inductions electrode 3 respectively with electricity
Field sensor signal output lead 6 is connected；
The contact probe is mainly made of Metal contact electrode 1 and suspension earth polar 5, by contacting electrification experience
Card whether there is high pressure；The Metal contact electrode 1 is the column construction with round end, and the lower end of Metal contact electrode 1 is stretched
Going out the through-hole of middle layer 2 and connects contact probe signal output lead 7, Metal contact electrode 1 is arranged vertically with middle layer 2,
And the bottom end of Metal contact electrode 1 is fixed on electric-field sensor by fixing nut 4 and metal gasket；The suspension
Pole 5 is located at the underface of Metal contact electrode 1, and is connect with contact probe signal output lead 7；
The non-contact type signal modulate circuit, is mainly made of reduction voltage circuit, filter circuit and rectification circuit；It is non-to connect
Touch signal is connected with electric-field sensor signal output lead 6, the induced voltage for improving electric-field sensor output；
The contact signal conditioning circuit is mainly made of current-limiting circuit, scaling circuit and filter circuit；Contact
Signal conditioning circuit is connected with contact probe signal output lead 7.
The material of the middle layer 2 is epoxy resin, and the material of the electric field induction electrode 3 is copper foil.
Beneficial effects of the present invention：The present invention can realize contact electrical verification under hyperbaric environment and contactless test
Electricity.The induced voltage of the non-contact type signal modulate circuit conditioning electric-field sensor output of the present invention, contact probe passes through miscellaneous
Spurious capacitance divides to obtain voltage signal, and it is high that dual sensor combination judges that electrical verification logic judges according to the signal after two circuits conditionings
Pressure zone electricity situation substantially increases the reliability and safety coefficient of electrical verification result.The present invention solves condensing type electroscope and refuses to submit
The shortcomings that alert and false alarm.The electric-field sensor of the present invention overcomes the stability deficiency of double copper sheet sensors, is based on Pockel
The electric-field sensor of effect defect with high costs.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the present invention；
Fig. 2 is the operation principle schematic diagram of the present invention；
Fig. 3 is the principle schematic of electric-field sensor of the present invention；
Fig. 4 is the dimensional structure diagram of contact probe head of the present invention；
Fig. 5 is the operation principle schematic diagram of contact probe head of the present invention；
Fig. 6 is the circuit diagram of the contactless modulate circuit of the present invention；
Fig. 7 is the circuit diagram of contact modulate circuit of the present invention；
Fig. 8 is the workflow block diagram that sensor of the invention judges electrical verification logic.
In figure：1 Metal contact electrode；2 middle layers；3 electric field induction electrodes；4 fixing nuts；5 suspension earth polars；6 electric fields pass
Sensor signal output lead；7 contact probe signal output leads；8~15 pins.
Specific implementation mode
Below in conjunction with attached drawing and technical solution, the specific implementation mode that further illustrates the present invention.
As shown in Figure 1, a kind of two-in-one sensor for high voltage electroscope, it includes Metal contact electrode 1, middle layer
2, electric field induction electrode 3, fixed screw 4, suspension earth polar 5, electric-field sensor signal output lead 6 and contact probe signal are defeated
Go out conducting wire 7.
As shown in Fig. 2, a kind of operation principle of two-in-one sensor for high voltage electroscope, electric-field sensor probe is defeated
Go out signal to export to Micro-processor MCV, contact probe head output signal after the conditioning of reduction voltage circuit, filter circuit and rectification circuit
It is exported to Micro-processor MCV after current-limiting circuit, scaling circuit and filter circuit conditioning.
As shown in figure 3, the principle schematic of the electric-field sensor in the present invention, upper and lower two electric field induction electrodes 3 are copper
Foil, intermediate middle layer 2 is epoxy resin, under the action of electric field strength E, 3 inductive output voltage difference U of electric field induction electrode.
As shown in figure 4, the contact probe head in the present invention is mainly made of Metal contact electrode 1 and suspension earth polar 5, and respectively
It is connect with contact probe signal output lead 7.
As shown in figure 5, the contact probe electrical verification principle schematic in the present invention.The two-in-one sensor of the present invention is installed on
The front end of electroscope.When contacting electrical verification, forms and be connected back between electrical body and electroscope ontology, human body, air, the earth
Road, the wherein Metal contact electrode 1 in contact probe and there are stray capacitance C1, suspension earth polar 5 and people between suspension earth polar 5
There are stray capacitance C2 between body, electroscope, the earth.Stray capacitance C1 and stray capacitance C2 is formed between the earth and electrical body
Pressure divider circuit, stray capacitance C1 partial pressure gained voltage outputs give contact signal conditioning circuit.
As shown in fig. 6, for the non-contact type electricity checking modulate circuit in the present invention.When electric-field sensor is close to high-voltage charged body
When, the bleeder circuit that electric-field sensor signal is formed by R1 and R2 after the protection circuit of D1 and D2 compositions, send to U1 and is formed
Voltage follower, after the filter circuit formed by U2, R3, R4, R5, R6, C1 and C2,11 filtering signal of pin is accurate
Rectifier circuit rectifies send the ADC1 pins that microprocessor is finally given to pin 12 at direct current.
As shown in fig. 7, for the contact electrical verification modulate circuit in the present invention.When contact probe touches high-voltage charged body
When, since stray capacitance divides, a voltage can be got between Metal contact electrode 1 and suspension earth polar 5 and is sent to pin 13, R1 is
The big resistance of current limliting, the voltage of pin 13 can make PNP triode Q1 be connected so that pin 14 obtains high level, by C1, R5,
After the filter circuit of pressure-stabilizing of R6, C2 composition, output to pin 15 obtains a high level.The ADC2 to microprocessor is finally sent to draw
Foot.
As shown in figure 8, the dual sensor combination for the present invention judges electrical verification logical flow chart.The mould of ADC1 and ADC2 inputs
Quasi- voltage signal is calculated the effective voltage value in 1 period of DC voltage after rectification by timer TIM1 after ADC is converted, when
The ADC2 input voltages being calculated are high level, then send out low-frequency sound and light alarm signal, otherwise then judge that ADC1 is inputted
Send out high-frequency sound-light alarm if it is high level when voltage for high level, otherwise continue to read calculate ADC1 and
The voltage effective value of ADC2.
A kind of two-in-one sensor for high voltage electroscope of the present invention, when installation, Metal contact electrode 1 and electric field biography
Sensor is disposed vertically, and Metal contact electrode 1 is positioned over the center of electric-field sensor, Metal contact electrode 1 by with fixed spiral shell
Mother 4 and metal gasket connection are fixedly connected with electric-field sensor.
A kind of two-in-one sensor for high voltage electroscope of the present invention, in use, be equipped with the present invention for high
Press the electroscope of the two-in-one sensor of electroscope close to object, when apart from object 0.2-0.7m, electroscope sends out low frequency
Sound-light alarm, illustrate that object may charge, then make for high voltage electroscope two-in-one sensor contact probe head contact
Object, sends out high-frequency alarm sound, then illustrates that object charges really.Else if contact object posteriority electric appliance is not sent out
The alarm of high frequency, then testee may be not charged, it may be possible to which contact electrical verification false alarm needs detection other objects nearby
Determine whether that contact-type incorrect is alarmed.If electroscope is apart from object 0.2-0.7m, low frequency alarm is not sent out, then object
May be not charged, further shown if still not sending out alarm with the contact probe head of two-in-one sensor contact object
Object is really not charged, otherwise, then it represents that object charges.
The configuration of the present invention is simple, compact is portable, is provided simultaneously with two kinds of electrical verification modes, enhance electrical verification accuracy rate,
Safety and reliability has further ensured the personal safety of electrical verification person.
Claims (2)
1. a kind of two-in-one sensor for high voltage electroscope, which is characterized in that the two-in-one sensor is mainly by electricity
Field sensor, contact probe, non-contact type signal modulate circuit and touch signal conditioning circuit composition；
The electric-field sensor is mainly made of middle layer (2) and electric field induction electrode (3), for measuring electric field strength；Institute
The middle layer (2) stated is cylindrical structure, and center is provided with and Metal contact electrode (1) matched through-hole；The electric field sense
It is circular ring shape laminated structure to answer electrode (3), is pasted onto the upper and lower surface of middle layer (2), upper and lower two electric field induction electricity
Pole (3) is connected with electric-field sensor signal output lead (6) respectively；
The contact probe is mainly made of Metal contact electrode (1) and suspension earth polar (5), by contacting electrification experience
Card whether there is high pressure；The Metal contact electrode (1) is the column construction with round end, under Metal contact electrode (1)
End stretches out the through-hole of middle layer (2) and connects contact probe signal output lead (7), Metal contact electrode (1) and middle layer
(2) it is arranged vertically, and the bottom end of Metal contact electrode (1) is fixed on by electric field sensing by fixing nut (4) and metal gasket
On device；The suspension earth polar (5) is located at the underface of Metal contact electrode (1), and with contact probe signal output lead
(7) it connects；
The non-contact type signal modulate circuit, is mainly made of reduction voltage circuit, filter circuit and rectification circuit；It is contactless
Signal is connected with electric-field sensor signal output lead (6), the induced voltage for improving electric-field sensor output；
The contact signal conditioning circuit is mainly made of current-limiting circuit, scaling circuit and filter circuit；Contact signal
Modulate circuit is connected with contact probe signal output lead (7).
2. a kind of two-in-one sensor for high voltage electroscope according to claim 1, which is characterized in that in described
The material of interbed (2) is epoxy resin, and the material of the electric field induction electrode (3) is copper foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810748406.6A CN108663564B (en) | 2018-07-10 | 2018-07-10 | Two-in-one sensor for high-voltage electroscope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810748406.6A CN108663564B (en) | 2018-07-10 | 2018-07-10 | Two-in-one sensor for high-voltage electroscope |
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| CN108663564A true CN108663564A (en) | 2018-10-16 |
| CN108663564B CN108663564B (en) | 2023-09-19 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884561A (en) * | 2019-03-29 | 2019-06-14 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Magnetic field detection module and magnet field probe |
| CN109991464A (en) * | 2019-03-15 | 2019-07-09 | 国网辽宁省电力有限公司电力科学研究院 | It is a kind of to use contact and noncontacting proximity sensor and its electricity-testing method |
| CN111257654A (en) * | 2020-01-22 | 2020-06-09 | 深圳成智达科技有限公司 | Alternating current electric field measuring device |
| CN112595864A (en) * | 2020-12-11 | 2021-04-02 | 国网江苏省电力有限公司徐州供电分公司 | Novel full-voltage telescopic electroscope |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109991464A (en) * | 2019-03-15 | 2019-07-09 | 国网辽宁省电力有限公司电力科学研究院 | It is a kind of to use contact and noncontacting proximity sensor and its electricity-testing method |
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| CN111257654A (en) * | 2020-01-22 | 2020-06-09 | 深圳成智达科技有限公司 | Alternating current electric field measuring device |
| CN111257654B (en) * | 2020-01-22 | 2020-10-27 | 深圳成智达科技有限公司 | Alternating current electric field measuring device |
| CN112595864A (en) * | 2020-12-11 | 2021-04-02 | 国网江苏省电力有限公司徐州供电分公司 | Novel full-voltage telescopic electroscope |
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| CN108663564B (en) | 2023-09-19 |
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