CN110492266A - A kind of non-contact electricity testing Integral earthing wire clamp - Google Patents
A kind of non-contact electricity testing Integral earthing wire clamp Download PDFInfo
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- CN110492266A CN110492266A CN201910725489.1A CN201910725489A CN110492266A CN 110492266 A CN110492266 A CN 110492266A CN 201910725489 A CN201910725489 A CN 201910725489A CN 110492266 A CN110492266 A CN 110492266A
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- 230000005611 electricity Effects 0.000 title claims abstract description 37
- 238000012360 testing method Methods 0.000 title claims abstract description 16
- 230000005684 electric field Effects 0.000 claims abstract description 22
- 230000006698 induction Effects 0.000 claims abstract description 22
- 239000003990 capacitor Substances 0.000 claims description 90
- 239000004065 semiconductor Substances 0.000 claims description 21
- 238000009434 installation Methods 0.000 abstract description 2
- 238000012795 verification Methods 0.000 description 7
- 239000004020 conductor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000000505 pernicious effect Effects 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
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- 230000033228 biological regulation Effects 0.000 description 1
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- 230000002708 enhancing effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
- H01R11/12—End pieces terminating in an eye, hook, or fork
- H01R11/14—End pieces terminating in an eye, hook, or fork the hook being adapted for hanging on overhead or other suspended lines, e.g. hot line clamp
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The present invention discloses a kind of non-contact electricity testing Integral earthing wire clamp, including earthing clamp ontology and the nearly electrical induction device for being fixed on earthing clamp ontology, wherein nearly electrical induction device includes power supply, electric field induction device, voltage follower circuit, voltage doubling rectifing circuit, magnification at high multiple filter circuit, comparison circuit and circuit of warning, one end of inductance sensor connects power supply, the connection of the input terminal of its other end and voltage follower circuit, the output end of voltage follower circuit and the input terminal of voltage doubling rectifing circuit connect, the output end of voltage doubling rectifing circuit is connect with the input terminal of magnification at high multiple filter circuit, the output end of magnification at high multiple filter circuit and the input terminal of comparison circuit connect, the output end of comparison circuit is connect with the input terminal for circuit of warning.The present invention is not easy for installation and improves the safety that earthing clamp uses.
Description
Technical field
The present invention relates to earthing clamp fields, more particularly, to a kind of non-contact electricity testing Integral earthing wire clamp.
Background technique
Current earthing clamp is mainly by enhancing shell, piercing blade, gasket, waterproof silicone grease, high-strength bolt, torque
Nut and cable termination cap sleeve composition.When cable need to do branch or connect, cable branch line terminal is inserted into waterproof terminal cap
Set, after determining main line branch location, twists the torque battle array nut on wire clamp with box spanner, and electricity can be pierced through by contacting blade in the process
Cable insulating layer, contacts with conductor, and gasket ring voltage cable is pierced around position, and silicone grease overflows in shell, when torque reaches
When setting value, nut moment explosive separation, main line and branch line are switched on, and waterproof performance and electrical effects have reached standard requirements
Parameter.
But present power failure-electrical verification-hanging earthing conductor operating instruction, when electrical verification, should use relevant voltage grade and qualification
Electroscope, power failure equipments two sides and need the position of short circuit grounding to each phase distinguish electrical verification.There should be electricity to set before electrical verification
It is tested on standby, confirmation electroscope is good.After identification equipment true no-voltage, repair apparatus should be grounded immediately and three-phase is short
Road.If the electrical verification of earthing clamp and hanging earthing conductor operate two processes it cannot be guaranteed that synchronous progress, can bring certain peace
Full hidden danger, such as: when carrying out electrical verification step, measurand is not charged, but in a few minutes clock time of electrical verification to hanging earthing conductor,
If interim anti-power transmission occurs, it will lead to serious " live connection of ground wire " pernicious maloperation event；Often can also occur due to
Operating personnel seeks convenient or leakage band electroscope to reasons such as scenes, and non-electrical verification is operated against regulations with regard to the pernicious of direct hanging earthing conductor.
Summary of the invention
The present invention in order to overcome at least one of the drawbacks of the prior art described above (deficiency), provides a kind of non-contact electricity testing one
Body formula earthing clamp.
The present invention is directed to solve above-mentioned technical problem at least to a certain extent.
In order to reach above-mentioned technical effect, technical scheme is as follows:
A kind of non-contact electricity testing Integral earthing wire clamp including earthing clamp ontology and is fixed on the close of earthing clamp ontology
Electrical induction device, wherein nearly electrical induction device includes power supply, electric field induction device, voltage follower circuit, voltage doubling rectifing circuit, high power
Filtering and amplifying circuit, comparison circuit and circuit of warning, one end of inductance sensor connect power supply, the other end and voltage follow electricity
The input terminal on road connects, and the output end of voltage follower circuit and the input terminal of voltage doubling rectifing circuit connect, voltage doubling rectifing circuit
Output end is connect with the input terminal of magnification at high multiple filter circuit, the input of the output end and comparison circuit of magnification at high multiple filter circuit
End connection, the output end of comparison circuit are connect with the input terminal for circuit of warning.
Preferably, the voltage follower circuit includes capacitor C1, inductance L1, capacitor C4, capacitor C10, C11, operation amplifier
Device U1A, operational amplifier U1B, resistance R1, R18, R19, R20, R21, electric field induction device pass through capacitor C1 and inductance L1 and C4
The other end of connecting pin, inductance L1 and C4 is grounded respectively, the connecting pin of input terminal connection the inductance L1 and C4 of R18, the output of R18
5 feet of end connection operational amplifier U1,5 feet of operational amplifier U1B are also connected with the input terminal of resistance R19, and the output end of R19 connects
1 foot and 2 feet of operational amplifier U1A are connect, the input terminal of resistance R20 and R21 series connection, resistance R20 connects power supply, resistance R21's
Output end ground connection, the connecting pin of resistance R20 and R21 are connect with 3 feet of operational amplifier U1A, and one end of R1 connects operation amplifier
6,7 feet of device U1B connect, and the other end of R1 is the output end of voltage follower circuit, and 4 feet of operational amplifier U1A are grounded, and 8
Foot connects power supply VCC, and capacitor C10, C11 are connected in parallel, 4 feet of connection operational amplifier U1A in one end in parallel, the other end
Connect 8 feet of operational amplifier U1A.
Preferably, the voltage doubling rectifing circuit includes capacitor C2, C3, C5, C6, diode D1, D2, D3, D4, capacitor C2 mono-
The output end of end connection voltage follower circuit, the other end connect the anode and capacitor C3 of the cathode of diode D1, diode D2
One end, one end of the anode connection capacitor C5 of diode D1, the one of the other end connection cathode of diode D2 of C5, capacitor C3
The cathode of end connection diode D2, the anode of the other end connection diode D3 of capacitor C3, one end of capacitor C6 connects diode
The cathode of D3, the anode of the other end connection diode D4 of capacitor C6 and the output end V1+ as voltage doubling rectifing circuit.
Preferably, the magnification at high multiple filter circuit include resistance R2, R4, R5, R7, R8, R12, R17, capacitor C7, C7,
C9, C16, C17, operational amplifier U2A, operational amplifier U2B, the output end ground connection of resistance R4, input terminal connection operation are put
One end of 6 feet of big device U2B, resistance R7 is connect with voltage doubling rectifing circuit output V1+, the input terminal of the other end and resistance R8,
The 5 feet connection of one end, operational amplifier U2B of capacitor C8, the output end of resistance R8, the other end of capacitor C8 are connected to operation and put
1 foot of big device U2A, the output end of resistance R8 are also connected with 2 feet of operational amplifier U2A, and resistance R12 connects with resistance R17, resistance
The input terminal of R12 connects power supply VCC, the output end ground connection of resistance R17, the input terminal of the output end of resistance R12 and resistance R17 with
3 feet of operational amplifier U2A connect, resistance R2 shunt capacitance C7, and one end connects 6 feet of operational amplifier U2B, the other end
7 feet of operational amplifier U2B are connected, 7 feet of operational amplifier U2B are also connected with one end of resistance R5, and the other end of resistance R5 connects
It connecing one end of capacitor C9 and connects comparison circuit as the output end of magnification at high multiple filter circuit, the other end of capacitor C9 is grounded,
Capacitor C16 is in parallel with capacitor C17,4 feet of connection operational amplifier U2B in one end in parallel, other end connection in parallel
8 feet of operational amplifier U2B.
Preferably, the comparison circuit include resistance R3, R11, R6, capacitor C18, C19, C20, C21, comparator U3, late
One end connection of 3 feet, resistance R3 and resistance R11 of stagnant reverser U4, comparator U3, the other end of resistance R3 connect power supply VCC,
The other end of resistance R11 is grounded, and the 4 feet ground connection of comparator U3,8 feet of comparator U3 connect power supply VCC, capacitor C18, C19 phase
Parallel connection, 8 feet of connection comparator U3 in one end in parallel, 4 feet of other end connection comparator U3 in parallel, the one of resistance R6
8 feet of end connection comparator U3, the other end are separately connected 1 foot of comparator U3 and 1 foot of sluggish reverser, sluggish reverser
7 feet ground connection, output Alarm of 2 feet of sluggish reverser as comparison circuit.
Preferably, the circuit of warning includes resistance R9, R10, R13, R14, R15, R16, metal-oxide-semiconductor Q1, Q2, light-emitting diodes
Pipe D5, buzzer LS1, capacitor C12, C13, C14 and C15, the output Alarm of one end connection comparison circuit of resistance R13 are another
One end connects one end, one end of resistance R15 and the gate pole of metal-oxide-semiconductor Q1 of capacitor C14, the other end of capacitor C14 and resistance R15's
The source electrode of the other end and metal-oxide-semiconductor Q1 ground connection, the cathode of the drain electrode connection diode D5 of metal-oxide-semiconductor Q1, the anode connection of diode D5
One end of resistance R9, the other end of resistance R9 connect power supply VCC, the output Alarm of one end connection comparison circuit of resistance R14,
Its other end connects one end, one end of resistance R16 and the door of metal-oxide-semiconductor Q2 of capacitor C15, the other end, the resistance R16 of capacitor C15
The other end and metal-oxide-semiconductor Q2 source electrode ground connection, metal-oxide-semiconductor Q2 drain electrode connection buzzer LS1 one end, buzzer LS1's is another
End is connect with one end of resistance R10, and the other end of resistance R10 connects power supply VCC, and capacitor C12, capacitor C13 are in parallel, in parallel
A terminating resistor R10 the other end or power supply VCC, other end ground connection in parallel.
Preferably, the electric field induction device uses alternating electric field inductor.
Preferably, the output area of the magnification at high multiple filter circuit voltage is 0~1.5V.
Preferably, the threshold value of the comparator U3 is 1.5V.
Compared with prior art, the beneficial effect of technical solution of the present invention is: the present invention by power supply, electric field induction device,
Voltage follower circuit, voltage doubling rectifing circuit, magnification at high multiple filter circuit, comparison circuit and connecting and composing for circuit of warning are applied to
The nearly electrical induction device of earthing clamp, the electric field signal around electric field induction sensor sensing, by resonance circuit by needs
Electric field signal amplifies, and feeding follows circuit, then will be obtained faint ac signal multiplication of voltage by voltage doubling rectifing circuit
Voltage signal input magnification at high multiple filter circuit, filter out High-frequency Interference part, low frequency d.c. component be amplified to output area
Comparison circuit is inputted for 0~1.5V, direct current signal is compared with the threshold value 1.5V of comparator U3, according to direct current signal size
Output has electricity, without electric two kinds of signals, and when having electricity, comparator exports low level, and comparator exports high level when no electricity, then through sluggishness
Reverser is reversed, and driving MOSFET pipe sending sound, light are warned.In this way, earthing clamp is contacted not direct with high pressure carrying device
In the case of, it can verify whether high-tension line charges using the electric field near high-voltage line, by warning, circuit issues warning,
The present invention is not only easy for installation but also improves the safety that earthing clamp uses.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the invention；
Fig. 2 is the circuit diagram of voltage follower circuit and voltage doubling rectifing circuit of the invention；
Fig. 3 is the circuit diagram of magnification at high multiple filter circuit and comparison circuit of the invention；
Fig. 4 is the circuit diagram of circuit of warning of the invention.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；
In order to better illustrate this embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent actual product
Size；
To those skilled in the art, it is to be understood that certain known features and its explanation, which may be omitted, in attached drawing
's.
The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples.
As shown in Figs 1-4, a kind of non-contact electricity testing Integral earthing wire clamp, including earthing clamp ontology and it is fixed on ground connection
The nearly electrical induction device of wire clip body, wherein nearly electrical induction device includes power supply, electric field induction device, voltage follower circuit, multiplication of voltage
Rectification circuit, magnification at high multiple filter circuit, comparison circuit and circuit of warning, one end of inductance sensor connects power supply, another
End is connect with the input terminal of voltage follower circuit, and the output end of voltage follower circuit and the input terminal of voltage doubling rectifing circuit connect,
The output end of voltage doubling rectifing circuit is connect with the input terminal of magnification at high multiple filter circuit, the output end of magnification at high multiple filter circuit with
The input terminal of comparison circuit connects, and the output end of comparison circuit is connect with the input terminal for circuit of warning.
In embodiments of the present invention, as shown in Figure 1, electric field signal around electric field induction sensor sensing and converting it
It for alternation piezoelectric voltage signal, is sent into voltage follower circuit forward bias and filters, then pass through voltage doubling rectifing circuit for faint friendship
Galvanic electricity signal voltage multiplying rectifier is d. c. voltage signal, and d. c. voltage signal is inputted magnification at high multiple filter circuit, it is dry to filter out high frequency
Part is disturbed, comparison circuit is inputted after low frequency d.c. component is amplified, direct current signal is compared with the threshold value of comparator U3, root
There is electricity, without electric two kinds of signals according to the output of direct current signal size, when having electricity, comparator exports low level, and comparator exports when no electricity
High level, then it is reversed through sluggish reverser, driving MOSFET pipe sending sound, light are warned.In this way, earthing clamp does not need contact band
Whether electrical cables or the operation for stopping live electric cable capable of being in electriferous state to live electric cable and carry out on-site identification.
Preferably, the voltage follower circuit includes capacitor C1, inductance L1, capacitor C4, capacitor C10, C11, operation amplifier
Device U1A, operational amplifier U1B, resistance R1, R18, R19, R20, R21, electric field induction device pass through capacitor C1 and inductance L1 and C4
The other end of connecting pin, inductance L1 and C4 is grounded respectively, the connecting pin of input terminal connection the inductance L1 and C4 of R18, the output of R18
5 feet of end connection operational amplifier U1,5 feet of operational amplifier U1B are also connected with the input terminal of resistance R19, and the output end of R19 connects
1 foot and 2 feet of operational amplifier U1A are connect, the input terminal of resistance R20 and R21 series connection, resistance R20 connects power supply, resistance R21's
Output end ground connection, the connecting pin of resistance R20 and R21 are connect with 3 feet of operational amplifier U1A, and one end of R1 connects operation amplifier
6,7 feet of device U1B connect, and the other end of R1 is the output end of voltage follower circuit, and 4 feet of operational amplifier U1A are grounded, and 8
Foot connects power supply VCC, and capacitor C10, C11 are connected in parallel, 4 feet of connection operational amplifier U1A in one end in parallel, the other end
Connect 8 feet of operational amplifier U1A.
In embodiments of the present invention, as shown in Fig. 2, an implementation of the specific connection structure of voltage follower circuit of the invention
Example, electric-field sensor is indicated with E1, is connect by C1 capacitor with inductance L1 and C4, the electric field signal frequency of 50HZ is passed through resonance
Mode is effectively selected, then the ac voltage signal of output is sent into operational amplifier U1.The both ends R19 are connected respectively to operation
The pin of amplifier U1A and U1B constitute add circuit, the ac voltage signal of input are raised.
Preferably, the voltage doubling rectifing circuit includes capacitor C2, C3, C5, C6, diode D1, D2, D3, D4, capacitor C2 mono-
The output end of end connection voltage follower circuit, the other end connect the anode and capacitor C3 of the cathode of diode D1, diode D2
One end, one end of the anode connection capacitor C5 of diode D1, the one of the other end connection cathode of diode D2 of C5, capacitor C3
The cathode of end connection diode D2, the anode of the other end connection diode D3 of capacitor C3, one end of capacitor C6 connects diode
The cathode of D3, the anode of the other end connection diode D4 of capacitor C6 and the output end V1+ as voltage doubling rectifing circuit.
In embodiments of the present invention, as shown in Fig. 2, an implementation of the specific connection structure of voltage doubling rectifing circuit of the invention
Example, by capacitor C2, C3, C5 and C6, diode D1, D2, D3 and D4 constitute 4 voltage doubling rectifing circuits.
Preferably, the magnification at high multiple filter circuit include resistance R2, R4, R5, R7, R8, R12, R17, capacitor C7, C7,
C9, C16, C17, operational amplifier U2A, operational amplifier U2B, the output end ground connection of resistance R4, input terminal connection operation are put
One end of 6 feet of big device U2B, resistance R7 is connect with voltage doubling rectifing circuit output V1+, the input terminal of the other end and resistance R8,
The 5 feet connection of one end, operational amplifier U2B of capacitor C8, the output end of resistance R8, the other end of capacitor C8 are connected to operation and put
1 foot of big device U2A, the output end of resistance R8 are also connected with 2 feet of operational amplifier U2A, and resistance R12 connects with resistance R17, resistance
The input terminal of R12 connects power supply VCC, the output end ground connection of resistance R17, the input terminal of the output end of resistance R12 and resistance R17 with
3 feet of operational amplifier U2A connect, resistance R2 shunt capacitance C7, and one end connects 6 feet of operational amplifier U2B, the other end
7 feet of operational amplifier U2B are connected, 7 feet of operational amplifier U2B are also connected with one end of resistance R5, and the other end of resistance R5 connects
It connecing one end of capacitor C9 and connects comparison circuit as the output end of magnification at high multiple filter circuit, the other end of capacitor C9 is grounded,
Capacitor C16 is in parallel with capacitor C17,4 feet of connection operational amplifier U2B in one end in parallel, other end connection in parallel
8 feet of operational amplifier U2B.
In embodiments of the present invention, as shown in figure 3, a reality of the specific connection structure of magnification at high multiple filter circuit of the invention
Example is applied, High-frequency Interference part is filtered out by magnification at high multiple filter circuit, low frequency d.c. component is amplified into input comparison circuit.
Preferably, the comparison circuit include resistance R3, R11, R6, capacitor C18, C19, C20, C21, comparator U3, late
One end connection of 3 feet, resistance R3 and resistance R11 of stagnant reverser U4, comparator U3, the other end of resistance R3 connect power supply VCC,
The other end of resistance R11 is grounded, and the 4 feet ground connection of comparator U3,8 feet of comparator U3 connect power supply VCC, capacitor C18, C19 phase
Parallel connection, 8 feet of connection comparator U3 in one end in parallel, 4 feet of other end connection comparator U3 in parallel, the one of resistance R6
8 feet of end connection comparator U3, the other end are separately connected 1 foot of comparator U3 and 1 foot of sluggish reverser, sluggish reverser
7 feet ground connection, output Alarm of 2 feet of sluggish reverser as comparison circuit.
In embodiments of the present invention, as shown in figure 3, an embodiment of the specific connection structure of comparison circuit of the invention, than
Compared with circuit by the output area of low-frequency d signal compared with the threshold value of comparator U3, judge direct current signal whether have electricity or
Without electricity, and output has electricity or the judgement signal without electricity, if there is electricity, comparator exports low level, if comparator output is high electric without electricity
Pressure, it is reversed through sluggish reverser.
Preferably, the circuit of warning includes resistance R9, R10, R13, R14, R15, R16, metal-oxide-semiconductor Q1, Q2, light-emitting diodes
Pipe D5, buzzer LS1, capacitor C12, C13, C14 and C15, the output Alarm of one end connection comparison circuit of resistance R13 are another
One end connects one end, one end of resistance R15 and the gate pole of metal-oxide-semiconductor Q1 of capacitor C14, the other end of capacitor C14 and resistance R15's
The source electrode of the other end and metal-oxide-semiconductor Q1 ground connection, the cathode of the drain electrode connection diode D5 of metal-oxide-semiconductor Q1, the anode connection of diode D5
One end of resistance R9, the other end of resistance R9 connect power supply VCC, the output Alarm of one end connection comparison circuit of resistance R14,
Its other end connects one end, one end of resistance R16 and the door of metal-oxide-semiconductor Q2 of capacitor C15, the other end, the resistance R16 of capacitor C15
The other end and metal-oxide-semiconductor Q2 source electrode ground connection, metal-oxide-semiconductor Q2 drain electrode connection buzzer LS1 one end, buzzer LS1's is another
End is connect with one end of resistance R10, and the other end of resistance R10 connects power supply VCC, and capacitor C12, capacitor C13 are in parallel, in parallel
A terminating resistor R10 the other end or power supply VCC, other end ground connection in parallel.
In embodiments of the present invention, as shown in figure 4, an embodiment of the specific connection structure of circuit of warning of the invention, shows
Alert circuit has electricity or low and high level without electricity according to output, passes through metal-oxide-semiconductor and exports corresponding warning signal.
Preferably, the electric field induction device uses alternating electric field inductor.
Preferably, the output area of the magnification at high multiple filter circuit voltage is 0~1.5V.
Preferably, the threshold value of the comparator U3 is 1.5V.
The same or similar label correspond to the same or similar components；
Described in attached drawing positional relationship for only for illustration, should not be understood as the limitation to this patent；
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (9)
1. a kind of non-contact electricity testing Integral earthing wire clamp, which is characterized in that including earthing clamp ontology and be fixed on ground line
The nearly electrical induction device for pressing from both sides ontology, wherein nearly electrical induction device includes power supply, electric field induction device, voltage follower circuit, times repoussage
One end of current circuit, magnification at high multiple filter circuit, comparison circuit and circuit of warning, inductance sensor connects power supply, the other end
It being connect with the input terminal of voltage follower circuit, the output end of voltage follower circuit and the input terminal of voltage doubling rectifing circuit connect, times
The output end of voltage rectifier is connect with the input terminal of magnification at high multiple filter circuit, the output end of magnification at high multiple filter circuit with than
Input terminal compared with circuit connects, and the output end of comparison circuit is connect with the input terminal for circuit of warning.
2. non-contact electricity testing Integral earthing wire clamp as described in claim 1, which is characterized in that the voltage follower circuit packet
Include capacitor C1, inductance L1, capacitor C4, capacitor C10, C11, operational amplifier U1A, operational amplifier U1B, resistance R1, R18,
R19, R20, R21, electric field induction device pass through the connecting pin of capacitor C1 and inductance L1 and C4, and the other end of inductance L1 and C4 connect respectively
Ground, the connecting pin of input terminal connection the inductance L1 and C4 of R18,5 feet of the output end connection operational amplifier U1 of R18, operation are put
5 feet of big device U1B are also connected with the input terminal of resistance R19,1 foot and 2 feet of the output end connection operational amplifier U1A of R19, resistance
R20 and R21 series connection, the input terminal of resistance R20 connect power supply, the output end ground connection of resistance R21, the connecting pin of resistance R20 and R21
It is connect with 3 feet of operational amplifier U1A, 6, the 7 feet connection of one end connection operational amplifier U1B of R1, the other end of R1 is electricity
Pressure follows the output end of circuit, the 4 feet ground connection of operational amplifier U1A, and 8 feet connect power supply VCC, and capacitor C10, C11 parallel connection connects
It connects, 4 feet of connection operational amplifier U1A in one end in parallel, the other end connects 8 feet of operational amplifier U1A.
3. non-contact electricity testing Integral earthing wire clamp as described in claim 1, which is characterized in that the voltage doubling rectifing circuit packet
Capacitor C2, C3, C5, C6, diode D1, D2, D3, D4 are included, the one end capacitor C2 connects the output end of voltage follower circuit, another
Cathode, the anode of diode D2 and one end of capacitor C3 of end connection diode D1, the anode connection capacitor C5's of diode D1
One end, the cathode of other end connection diode D2 of C5, one end of capacitor C3 connect the cathode of diode D2, and capacitor C3's is another
The anode of end connection diode D3, the cathode of one end connection diode D3 of capacitor C6, the other end of capacitor C6 connect diode
The anode of D4 and output end V1+ as voltage doubling rectifing circuit.
4. non-contact electricity testing Integral earthing wire clamp as described in claim 1, which is characterized in that the magnification at high multiple filtered electrical
Road includes resistance R2, R4, R5, R7, R8, R12, R17, capacitor C7, C7, C9, C16, C17, operational amplifier U2A, operation amplifier
The output end of device U2B, resistance R4 are grounded, and input terminal connects 6 feet of operational amplifier U2B, one end of resistance R7 and times repoussage
Current circuit exports V1+ connection, and 5 feet of the other end and the input terminal of resistance R8, one end of capacitor C8, operational amplifier U2B connect
It connects, the output end of resistance R8, the other end of capacitor C8 are connected to 1 foot of operational amplifier U2A, and the output end of resistance R8 is also connected with
2 feet of operational amplifier U2A, resistance R12 connect with resistance R17, and the input terminal of resistance R12 connects power supply VCC, resistance R17's
Output end ground connection, the output end and the input terminal of resistance R17 and 3 feet of operational amplifier U2A of resistance R12 are connect, and resistance R2 is simultaneously
Join capacitor C7, one end connects 6 feet of operational amplifier U2B, and the other end connects 7 feet of operational amplifier U2B, operation amplifier
7 feet of device U2B are also connected with one end of resistance R5, and one end of the other end connection capacitor C9 of resistance R5 is simultaneously filtered as magnification at high multiple
The output end of circuit connects comparison circuit, the other end ground connection of capacitor C9, and capacitor C16 is in parallel with capacitor C17, and in parallel one
4 feet of end connection operational amplifier U2B, 8 feet of other end connection operational amplifier U2B in parallel.
5. non-contact electricity testing Integral earthing wire clamp as described in claim 1, which is characterized in that the comparison circuit includes electricity
Hinder R3, R11, R6, capacitor C18, C19, C20, C21, comparator U3,3 feet of sluggish reverser U4, comparator U3, resistance R3 and
One end of resistance R11 connects, and the other end of resistance R3 connects power supply VCC, the other end ground connection of resistance R11,4 feet of comparator U3
8 feet of ground connection, comparator U3 connect power supply VCC, and capacitor C18, C19 are in parallel, and the 8 of connection comparator U3 in one end in parallel
Foot, 4 feet of other end connection comparator U3 in parallel, 8 feet of one end connection comparator U3 of resistance R6, other end difference
Connect 1 foot of comparator U3 and 1 foot of sluggish reverser, the 7 feet ground connection of sluggish reverser, 2 feet of sluggish reverser be used as than
Compared with the output Alarm of circuit.
6. non-contact electricity testing Integral earthing wire clamp as described in claim 1, which is characterized in that the circuit of warning includes electricity
Hinder R9, R10, R13, R14, R15, R16, metal-oxide-semiconductor Q1, Q2, light emitting diode D5, buzzer LS1, capacitor C12, C13, C14 and
The output Alarm of one end connection comparison circuit of C15, resistance R13, the other end connect one end of capacitor C14, resistance R15
The source electrode of the gate pole of one end and metal-oxide-semiconductor Q1, the other end of capacitor C14 and the other end of resistance R15 and metal-oxide-semiconductor Q1 ground connection, metal-oxide-semiconductor
The cathode of the drain electrode connection diode D5 of Q1, one end of the anode connection resistance R9 of diode D5, the other end connection of resistance R9
The output Alarm of one end connection comparison circuit of power supply VCC, resistance R14, the other end connect one end of capacitor C15, resistance
One end of R16 and the door of metal-oxide-semiconductor Q2, the source electrode ground connection of the other end of capacitor C15, the other end of resistance R16 and metal-oxide-semiconductor Q2, MOS
One end of the drain electrode connection buzzer LS1 of pipe Q2, the other end of buzzer LS1 are connect with one end of resistance R10, resistance R10's
The other end connects power supply VCC, and capacitor C12, capacitor C13 are in parallel, the other end or power supply of a terminating resistor R10 in parallel
VCC, other end ground connection in parallel.
7. non-contact electricity testing Integral earthing wire clamp as described in claim 1, which is characterized in that the electric field induction device uses
Alternating electric field inductor.
8. non-contact electricity testing Integral earthing wire clamp as described in claim 1, which is characterized in that the magnification at high multiple filtered electrical
The output area of road voltage is 0~1.5V.
9. non-contact electricity testing Integral earthing wire clamp as described in claim 1, which is characterized in that the thresholding of the comparator U3
Value is 1.5V.
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