CN109188054A - A kind of device for extra-high voltage current detecting - Google Patents
A kind of device for extra-high voltage current detecting Download PDFInfo
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- CN109188054A CN109188054A CN201811126290.9A CN201811126290A CN109188054A CN 109188054 A CN109188054 A CN 109188054A CN 201811126290 A CN201811126290 A CN 201811126290A CN 109188054 A CN109188054 A CN 109188054A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
Abstract
The invention discloses a kind of devices for extra-high voltage current detecting; the device under extra-high current voltage for being detected; including conducting copper, insulating protective sleeve, connecting terminal and sensor module; the present invention is sensed using hall effect current sensor; it can test direct current, exchange and irregular waveform; at low cost, cost performance is high；Use the polytetrafluoroethylene material of high insulation resistance, the sheath of composition isolation high-pressure section and Sensor section；Sensor is using metal shell and is grounded, and when generating high pressure arcing, shields high pressure, protects circuit；Add protective device in power supply, device and output end, it is suppressed that damage of the magnetic interference to circuit.
Description
Technical field
The present invention relates to a kind of devices for extra-high voltage current detecting, belong to intelligent measurement field.
Background technique
Currently, being detected under high voltage and current, the prior art uses the Rogowski coil of import, but such is produced
Product can only detect the signal of alternating current, it is also necessary to carry out integral reduction to secondary singal and need to carry out secondary treatment, and this kind
Coil price is more expensive.In addition, the environment under high voltage also needs to solve the problems, such as electrical isolation, the safety problem of sensor and magnetic
Field interference problem, needs to solve the problems, such as that three existing detection structures are often more complicated simultaneously, needs to find a new height
Measure voltage & current mode and device are detected accordingly.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of devices for extra-high voltage current detecting.
In order to achieve the above object, the invention adopts the following technical scheme: a kind of device for extra-high voltage current detecting,
The device for extra-high voltage current detecting under extra-high current voltage for being detected, it is characterised in that: including conducting copper,
Insulating protective sleeve, connecting terminal and sensor module, the insulating protective sleeve are made of polytetrafluoroethylene (PTFE), are cube knot
Structure, center are equipped with through-hole, and the shortest distance of the insulating protective sleeve and through-hole four surfaces to through-holes that open up direction parallel is equal
Greater than 50mm, the length of the through-hole is greater than 600mm, and the insulating protective sleeve is used for high-pressure section is exhausted with sensor module
Edge can reach the insulation effect of 3000KV；The conducting copper passes through in the through-hole, for connecting the master of tested equipment
Circuit, the both ends that the conducting copper is exposed to outside the insulating protective sleeve are respectively equipped with several fixedly connected holes, described to lead
The fixedly connected hole at electrolytic copper row both ends connect to form electrical circuit with the positive and negative anodes of main loop circuit respectively；The connecting terminal
It is mounted on the middle part of the insulating protective sleeve and the through-hole outer surface that open up direction parallel, the connection terminal is equipped with power end
Mouth, input port and output port, the power port connect to power supply, and the signal of the input port and sensor module is defeated
Outlet connection, for the output signal of receiving sensor component, the input port of the output port and master control room is connected, and is used for
Signal is transmitted to master control room；The sensor module is placed in outside insulating protective sleeve, passes through adder by several Hall sensors
Connection composition, the sensor module are equipped with source current input terminal and signal output end, the source current input terminal and electricity
Source connection, the signal output end are used to transmit signal to connection terminal.
Preferably, the connecting terminal is equipped with ground line mouth, 4 shell of sensor module uses metal shell knot
Structure, ground wire is connected on the metal shell of sensor module by the ground line mouth, for protecting the route of sensor module.
Preferably, the connecting terminal is equipped with location hole, the sensor module is fixed on the location hole.
Preferably, input port and the institute of the fixedly connected hole at the conducting copper both ends, the connection terminal
The source current input terminal for stating sensor module is respectively connected with explosion stack, the explosion stack another port ground connection.
The present invention also provides a kind of circuits using the above-mentioned device for extra-high voltage current detecting, it is characterised in that: packet
Positive electricity source circuit, negative electricity source circuit, detection circuit, signal amplification circuit and protection circuit are included,
The positive electricity source circuit is located at the connecting pin of the anode of the conductive bronze medal (1) and tested equipment, including first integrates
IC circuit 1, first capacitor C1, the second capacitor C2, the 5th capacitor C5, the 6th capacitor C6, the first anti-thunder tube D1 and third anti-thunder tube
D3, first Integrated circuit IC 1 be 78 series voltage-stabiliser tubes, the first capacitor C1, the second capacitor C2, the 5th capacitor C5 and
6th capacitor C6 is filter capacitor, the model SMA4750A of the first anti-thunder tube D1, breakdown voltage 27V, and described
The model SMA4746A of three anti-thunder tube D3, breakdown voltage 18V, the first capacitor C1, the second capacitor C2 and the first anti-thunder tube
One end of D1 is grounded, and the other end is connect with VCC+ respectively, and the input port of the first Integrated circuit IC 1 is connect with VCC+, output end
Mouthful connect with VDD+, one end of the 5th capacitor C5, the 6th capacitor C6 and third anti-thunder tube D3 are grounded, the other end respectively with
VDD+ connection；
The negative electricity source circuit is located at the connecting pin of the cathode of the conductive bronze medal (1) and tested equipment, including second integrates
IC circuit 2, third capacitor C3, the 4th capacitor C4, the 7th capacitor C7, the 8th capacitor C8, the second anti-thunder tube D2 and the 4th anti-thunder tube
D4, second Integrated circuit IC 2 be 79 series voltage-stabiliser tubes, the third capacitor C3, the 4th capacitor C4, the 7th capacitor C7 and
8th capacitor C8 is filter capacitor, the model SMA4750A of the second anti-thunder tube D2, breakdown voltage 27V, and described
The model SMA4746A of four anti-thunder tube D4, breakdown voltage 18V, the third capacitor C3, the 4th capacitor C4 and the second anti-thunder tube
One end of D2 is grounded, and the other end is connect with VCC- respectively, and the input port of the second Integrated circuit IC 2 is connect with VCC-, output end
Mouthful connect with VDD-, one end of the 7th capacitor C7, the 8th capacitor C8 and the 4th anti-thunder tube D4 are grounded, the other end respectively with
VDD- connection；
The detection circuit includes constant-current circuit and Hall detection circuit,
The constant-current circuit includes first resistor R1, second resistance R2, the first zener diode DZ1, the 5th diode D5, first
Triode Q1, the output end of the first zener diode DZ1 are connect with 12V power supply, and input terminal concatenates first resistor R1, described
The other end of first resistor R1 is grounded, and one end of the second resistance R2 is connect with 12V power supply, the other end and the first triode Q1
Collector connection, the input terminal of the 5th diode D5 connect with the base stage of the first triode Q1, and output end and first is surely
The input terminal connection of diode DZ1 is pressed, the emitter of the first triode Q1 is connect with the input terminal of Hall detection circuit, institute
Constant-current circuit is stated for powering to Hall detection circuit；
The Hall detection circuit includes the first Hall element H1, the second Hall element H2, third Hall element H3, the 4th Hall
Element H4 is formed a whole four Hall elements by adder；
The signal amplification circuit includes third Integrated circuit IC 3, adder circuit, zeroing circuit and modulation circuit,
The adder circuit is by 3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7,
Eight resistance R8, the 9th resistance R9 and the tenth resistance R10 composition, one end of the 3rd resistor R3 and the 4th resistance R4 are respectively with the
The output end of one Hall element H1 connects, one end of the 5th resistance R5 and the 6th resistance R6 respectively with the second Hall element H2
Output end connection, one end of the 7th resistance R7 and the 8th resistance R8 respectively with the output end of third Hall element H3 connect
It connects, one end of the 9th resistance R9 and the tenth resistance R10 is connect with the output end of the 4th Hall element H4 respectively, the third
Resistance R3, the 5th resistance R5, the 7th resistance R7 and the 9th resistance R9 the other end connect with the cathode of third Integrated circuit IC 3,
The other end and third Integrated circuit IC 3 of the 4th resistance R4, the 6th resistance R6, the 8th resistance R8 and the tenth resistance R10
Anode connection, the adder circuit are used to integrate the electric signal of Hall detection circuit；
The zeroing circuit is by eleventh resistor R11, twelfth resistor R12, the 15th resistance R15, the 16th resistance R16,
17 resistance R17, the second zener diode DZ2, third zener diode DZ3 and the second rheostat TR2, the eleventh resistor
One end of R11 is connect with 12V power supply, and the other end is connect with the output end of the second zener diode DZ2, the second zener diode
The input end grounding of DZ2, the output end of the second zener diode DZ2 are sequentially connected in series twelfth resistor R12, the second rheostat TR2
It is connect with one end of the 16th resistance R16, the 15th resistance R15 with 12V power supply, the other end and third zener diode
The input terminal of DZ3 connects, the output end ground connection of third zener diode DZ3, the other end of the 16th resistance R16 and third pressure stabilizing
The input terminal of diode DZ3 connects, and one end of the 17th resistance R17 is connected to the variable resistance on piece of the second rheostat TR2, separately
One end is connect with the cathode of third Integrated circuit IC 3；
The modulation circuit includes thirteenth resistor R13, the 14th resistance R14 and the first variable resistance piece TR1, the thirteenth resistor
R13 is feedback resistance, the anode of the third Integrated circuit IC 3 be sequentially connected in series thirteenth resistor R13, the first variable resistance piece TR1 and
The other end of 14th resistance R14, the 14th resistance R14 are grounded, and the variable resistance piece of the first variable resistance piece TR1 is connected to third collection
On output port at IC circuit 3；
The protection circuit includes the 6th anti-thunder tube D6 and the 7th anti-thunder tube D7, the model of the 6th anti-thunder tube D6
The signal of SMA4734A, breakdown voltage 5.6V, the 7th anti-thunder tube D7 are SMA4740A, breakdown voltage 10V, the described 6th
One end of anti-thunder tube D6 is connected to the input port of Hall detection circuit, and the other end is grounded, for being protected to Hall element,
The 7th anti-thunder tube D7 is connected on the output port of third Integrated circuit IC 3, other end ground connection；
The output port of the third Integrated circuit IC 3 connects the 18th resistance R18, the other end connection of the 18th resistance R18
Master control room, for being protected to output signal.
The utility model has the advantages that compared with prior art, the invention has the following advantages that the present invention is sensed using Hall effect current
Device can test direct current, exchange and irregular waveform, at low cost, and cost performance is high；Use the polytetrafluoroethylene (PTFE) of high insulation resistance
Material, the sheath of composition isolation high-pressure section and Sensor section；Sensor is using metal shell and is grounded, and is generating high pressure
When arcing, high pressure is shielded, protects circuit；Add protective device in power supply, device and output end, it is suppressed that magnetic interference is to circuit
Damage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the insulating protective sleeve in the present invention；
Fig. 2 is structure chart of the invention；
Fig. 3 is circuit structure diagram of the invention；
Wherein, 1, conducting copper, 2, insulating protective sleeve, 3, connecting terminal, 4, sensor module, 101, fixedly connected hole, 201,
Through-hole, 301, power port, 302, input port, 303, output port, 304, ground line mouth, 305, location hole.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate
It the present invention rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention each
The modification of kind equivalent form falls within the application range as defined in the appended claims.
As shown in Fig. 1-2, a kind of device for extra-high voltage current detecting, this is used for the device of extra-high voltage current detecting
For being detected under extra-high current voltage, including conducting copper 1, insulating protective sleeve 2, connecting terminal 3 and sensor module 4,
Insulating protective sleeve 2 is made of polytetrafluoroethylene (PTFE), is cube structure, and center is equipped with through-hole 201, insulating protective sleeve 2 and logical
The shortest distance that hole 201 opens up four parallel surfaces to through-holes 201 of direction is all larger than 50mm, and the length of through-hole 201 is greater than
600mm, insulating protective sleeve 2 can reach the insulation effect of 3000KV for high-pressure section and sensor module 4 to insulate；It leads
Electrolytic copper row 1 passes through in through-hole 201, for connecting the major loop of tested equipment, by the copper bar, can pass through the electricity of 0 ~ 3000A
Stream, and with the presence of high voltage on the copper bar.The both ends that conducting copper 1 is exposed to outside insulating protective sleeve 2 are respectively equipped with several
The fixedly connected hole 101 of fixedly connected hole 101,1 both ends of conducting copper connect to form electricity with the positive and negative anodes of main loop circuit respectively
Circuit；Connecting terminal 3 is mounted on the middle part of insulating protective sleeve 2 and through-hole 201 outer surface that open up direction parallel, connection terminal 3
It is equipped with power port 301, input port 302, output port 303, ground line mouth 304 and location hole 305, power port 301
It connects to power supply, input port 302 is connect with the signal output end of sensor module 4, the output for receiving sensor component 4
Signal, output port 303 are connect with the input port of master control room, for transmitting signal to master control room, are grounded mouth 304 for ground wire
It is connected on the metal shell of sensor module 4, for protecting the route of sensor module 4, sensor module 4 is fixed on positioning
On hole 305, so that positional shift does not occur during the work time for sensor module 4, guarantee the safety and measuring accuracy of sensor.
Sensor module 4 is made up of several Hall sensors 401 adder connection, and it is defeated that sensor module 4 is equipped with source current
Enter end and signal output end, source current input terminal connects to power supply, and signal output end is used to transmit signal to connection terminal.This
Outside, the fixedly connected hole 101 at 1 both ends of conducting copper, the input port 302 of connection terminal and sensor module 4 source current
Input terminal is respectively connected with explosion stack, explosion stack another port ground connection.
In use, hall effect sensor collects the magnetic field that electric current generation is flowed through in circuit to the present apparatus,
It is processed into the electric signal of standard through amplifying circuit, is transferred to control system governor circuit, is shown or is controlled.
The circuit structure of the present apparatus is as shown in figure 3, be analyzed as follows circuit module each in figure:
It is located at including positive electricity source circuit, negative electricity source circuit, detection circuit, signal amplification circuit and protection circuit, positive electricity source circuit
The connecting pin of conductive bronze medal 1 and the anode of tested equipment, by the first Integrated circuit IC 1, first capacitor C1, the second capacitor C2,
5th capacitor C5, the 6th capacitor C6, the first anti-thunder tube D1 and third anti-thunder tube D3 composition, the first Integrated circuit IC 1 are 78 series
Voltage-stabiliser tube, first capacitor C1, the second capacitor C2, the 5th capacitor C5 and the 6th capacitor C6 are filter capacitor, the first anti-thunder tube
The model SMA4750A of D1, breakdown voltage 27V, the model SMA4746A of third anti-thunder tube D3, breakdown voltage 18V, the
One end of one capacitor C1, the second capacitor C2 and the first anti-thunder tube D1 are grounded, and the other end is connect with VCC+ respectively, the first integrated circuit
The input port of IC1 is connect with VCC+, and output port is connect with VDD+, the 5th capacitor C5, the 6th capacitor C6 and third anti-thunder tube
One end of D3 is grounded, and the other end is connect with VDD+ respectively；
Negative electricity source circuit is located at the connecting pin of conductive bronze medal 1 and the cathode of tested equipment, by the second Integrated circuit IC 2, third
Capacitor C3, the 4th capacitor C4, the 7th capacitor C7, the 8th capacitor C8, the second anti-thunder tube D2 and the 4th anti-thunder tube D4 composition, the second collection
It is the voltage-stabiliser tube of 79 series at IC circuit 2, third capacitor C3, the 4th capacitor C4, the 7th capacitor C7 and the 8th capacitor C8 are filter
Wave capacitor, the model SMA4750A of the second anti-thunder tube D2, breakdown voltage 27V, the model of the 4th anti-thunder tube D4
One end of SMA4746A, breakdown voltage 18V, third capacitor C3, the 4th capacitor C4 and the second anti-thunder tube D2 are grounded, other end difference
It being connect with VCC-, the input port of the second Integrated circuit IC 2 is connect with VCC-, and output port is connect with VDD-, the 7th capacitor C7,
One end of 8th capacitor C8 and the 4th anti-thunder tube D4 is grounded, and the other end is connect with VDD- respectively；
Detection circuit includes constant-current circuit and Hall detection circuit,
Constant-current circuit is by first resistor R1, second resistance R2, the first zener diode DZ1, the 5th diode D5, the first triode
Q1 composition, the output end of the first zener diode DZ1 are connect with 12V power supply, and input terminal concatenates first resistor R1, first resistor R1
Other end ground connection, one end of second resistance R2 connect with 12V power supply, and the other end is connect with the collector of the first triode Q1,
The input terminal of 5th diode D5 is connect with the base stage of the first triode Q1, the input of output end and the first zener diode DZ1
End connection, the emitter of the first triode Q1 are connect with the input terminal of Hall detection circuit, and constant-current circuit is used to detect to Hall
Circuit power supply；
Hall detection circuit is by the first Hall element H1, the second Hall element H2, third Hall element H3, the 4th Hall element H4
Composition, is formed a whole four Hall elements by adder；
Signal amplification circuit is made of third Integrated circuit IC 3, adder circuit, zeroing circuit and modulation circuit,
Adder circuit is by 3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th electricity
It hinders R8, the 9th resistance R9 and the tenth resistance R10 to form, one end of 3rd resistor R3 and the 4th resistance R4 are first with the first Hall respectively
The output end of part H1 connects, and one end of the 5th resistance R5 and the 6th resistance R6 connect with the output end of the second Hall element H2 respectively
Connect, one end of the 7th resistance R7 and the 8th resistance R8 are connect with the output end of third Hall element H3 respectively, the 9th resistance R9 and
One end of tenth resistance R10 is connect with the output end of the 4th Hall element H4 respectively, 3rd resistor R3, the 5th resistance R5, the 7th
The other end of resistance R7 and the 9th resistance R9 are connect with the cathode of third Integrated circuit IC 3, the 4th resistance R4, the 6th resistance R6,
The other end of 8th resistance R8 and the tenth resistance R10 is connect with the anode of third Integrated circuit IC 3, and adder circuit is used for will suddenly
The electric signal integration of your detection circuit；
Zeroing circuit is by eleventh resistor R11, twelfth resistor R12, the 15th resistance R15, the 16th resistance R16, the 17th
Resistance R17, the second zener diode DZ2, third zener diode DZ3 and the second rheostat TR2, the one of eleventh resistor R11
End is connect with 12V power supply, and the other end is connect with the output end of the second zener diode DZ2, the input of the second zener diode DZ2
End ground connection, the output end of the second zener diode DZ2 are sequentially connected in series twelfth resistor R12, the second rheostat TR2 and the 16th electricity
R16 is hindered, one end of the 15th resistance R15 is connect with 12V power supply, and the other end is connect with the input terminal of third zener diode DZ3,
The output end of third zener diode DZ3 is grounded, the input of the other end and third zener diode DZ3 of the 16th resistance R16
End connection, one end of the 17th resistance R17 are connected to the variable resistance on piece of the second rheostat TR2, the other end and third integrated circuit
The cathode of IC3 connects；
Modulation circuit is made of thirteenth resistor R13, the 14th resistance R14 and the first variable resistance piece TR1, and thirteenth resistor R13 is
Feedback resistance, the anode of third Integrated circuit IC 3 are sequentially connected in series thirteenth resistor R13, the first variable resistance piece TR1 and the 14th resistance
The other end of R14, the 14th resistance R14 are grounded, and the variable resistance piece of the first variable resistance piece TR1 is connected to the defeated of third Integrated circuit IC 3
In exit port；
Protection circuit is made of the 6th anti-thunder tube D6 and the 7th anti-thunder tube D7, and the model SMA4734A of the 6th anti-thunder tube D6 is hit
Voltage 5.6V is worn, the signal of the 7th anti-thunder tube D7 is SMA4740A, and one end of breakdown voltage 10V, the 6th anti-thunder tube D6 connect
In the input port of Hall detection circuit, other end ground connection, for protecting to Hall element, the 7th anti-thunder tube D7 is connected to
On the output port of third Integrated circuit IC 3, other end ground connection；
The output port of third Integrated circuit IC 3 connects the 18th resistance R18, and the other end of the 18th resistance R18 connects master control
Room, for being protected to output signal.
What the present apparatus solved first makes the Insulation Problems under high voltage environment, using polytetrafluoroethylene material, is done
It at an insulating protective sleeve, covers on the conducting copper of high voltage, then, sensor is mounted on to the outside of insulating protective sleeve,
High-pressure section and sensor are kept apart.Isolation voltage intensity >=60kv/mm of polytetrafluoroethylene (PTFE), polytetrafluoroethylsheath sheath
Thickness reaches 50mm, theoretically can reach the insulation of 3000KV.In general, when voltage is less than 10KV, air is non-conductive, electricity
Resistance is infinitely great, and when voltage is greater than 10KV, air will be breakdown and conductive.In a high voltage state, due to the electric isolution of air
Intensity not can guarantee the safety of sensor, and therefore, the present apparatus uses metal material using sensor outer housing, by the outer of metal material
Shell ground connection, once there is high pressure arcing contact sensor, electric current will be flowed out from ground wire；Meanwhile the circuit part installation of sensor
When far below metal shell sideline, prevent arcing from damaging to wiring board.Due to the work under high voltage and current state
Make, the interference of equipment major loop becomes not only more but also strong, and the failure rate of sensor is high.The present apparatus is anti-interference for circuit, removes
It is taken outside Anti-interference Design in PCB design, also adds anti-thunder tube in power input, device input and sensor output,
Using the voltage class of different anti-thunder tubes, inhibits influence of the interference to power supply, device etc., also demonstrate this method in practice
Feasibility.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. a kind of device for extra-high voltage current detecting, which is used in extra-high current voltage
Under detected, it is characterised in that: including conducting copper (1), insulating protective sleeve (2), connecting terminal (3) and sensor module
(4),
The insulating protective sleeve (2) is made of polytetrafluoroethylene (PTFE), is cube structure, center is equipped with through-hole (201), described
The shortest distance of insulating protective sleeve (2) and through-hole (201) four surfaces to through-hole (201) that open up direction parallel is all larger than
50mm, the length of the through-hole (201) are greater than 600mm, and the insulating protective sleeve (2) is used for high-pressure section and sensor module
(4) it insulate, can reach the insulation effect of 3000KV；
The conducting copper (1) passes through the through-hole (201), for connecting the major loop of tested equipment, the conducting copper
(1) both ends of the insulating protective sleeve (2) outside are exposed to and are respectively equipped with several fixedly connected holes (101), the conducting copper
(1) fixedly connected hole (101) at both ends connect to form electrical circuit with the positive and negative anodes of main loop circuit respectively；
The connecting terminal (3) is mounted on the insulating protective sleeve (2) and through-hole (201) and opens up in the parallel outer surface in direction
Portion, the connection terminal (3) are equipped with power port (301), input port (302) and output port (303), the power end
Mouth (301) connects to power supply, and the input port (302) connect with the signal output end of sensor module (4), passes for receiving
The output signal of sensor component (4), the output port (303) connect with the input port of master control room, for passing to master control room
Defeated signal；
The sensor module (4) is placed in insulating protective sleeve (2) outside, is connected by several Hall sensors (401) by adder
Composition is connect, the sensor module (4) is equipped with source current input terminal and signal output end, the source current input terminal and electricity
Source connection, the signal output end are used to transmit signal to connection terminal.
2. the device according to claim 1 for extra-high voltage current detecting, it is characterised in that: the sensor module
(4) shell uses metal shell structure, and the connecting terminal (3) is equipped with ground line mouth (304), the ground line mouth (304)
Ground wire is connected on the metal shell of sensor module (4), for protecting the route of sensor module (4).
3. the device according to claim 1 for extra-high voltage current detecting, it is characterised in that: the connecting terminal (3)
It is equipped with location hole (305), the sensor module (4) is fixed on the location hole (305).
4. the device according to claim 1 for extra-high voltage current detecting, it is characterised in that: the conducting copper (1)
The electricity of the fixedly connected hole (101) at both ends, the input port (302) of the connection terminal and the sensor module (4)
Ource electric current input terminal is respectively connected with explosion stack, the explosion stack another port ground connection.
5. any device for extra-high voltage current detecting according to claim 1-4, uses a kind of specific circuit
Structure, it is characterised in that: including positive electricity source circuit, negative electricity source circuit, detection circuit, signal amplification circuit and circuit is protected,
The positive electricity source circuit is located at the connecting pin of the anode of the conductive bronze medal (1) and tested equipment, including first integrates
IC circuit 1, first capacitor C1, the second capacitor C2, the 5th capacitor C5, the 6th capacitor C6, the first anti-thunder tube D1 and third anti-thunder tube
D3, first Integrated circuit IC 1 be 78 series voltage-stabiliser tubes, the first capacitor C1, the second capacitor C2, the 5th capacitor C5 and
6th capacitor C6 is filter capacitor, the model SMA4750A of the first anti-thunder tube D1, breakdown voltage 27V, and described
The model SMA4746A of three anti-thunder tube D3, breakdown voltage 18V, the first capacitor C1, the second capacitor C2 and the first anti-thunder tube
One end of D1 is grounded, and the other end is connect with VCC+ respectively, and the input port of the first Integrated circuit IC 1 is connect with VCC+, output end
Mouthful connect with VDD+, one end of the 5th capacitor C5, the 6th capacitor C6 and third anti-thunder tube D3 are grounded, the other end respectively with
VDD+ connection；
The negative electricity source circuit is located at the connecting pin of the cathode of the conductive bronze medal (1) and tested equipment, including second integrates
IC circuit 2, third capacitor C3, the 4th capacitor C4, the 7th capacitor C7, the 8th capacitor C8, the second anti-thunder tube D2 and the 4th anti-thunder tube
D4, second Integrated circuit IC 2 be 79 series voltage-stabiliser tubes, the third capacitor C3, the 4th capacitor C4, the 7th capacitor C7 and
8th capacitor C8 is filter capacitor, the model SMA4750A of the second anti-thunder tube D2, breakdown voltage 27V, and described
The model SMA4746A of four anti-thunder tube D4, breakdown voltage 18V, the third capacitor C3, the 4th capacitor C4 and the second anti-thunder tube
One end of D2 is grounded, and the other end is connect with VCC- respectively, and the input port of the second Integrated circuit IC 2 is connect with VCC-, output end
Mouthful connect with VDD-, one end of the 7th capacitor C7, the 8th capacitor C8 and the 4th anti-thunder tube D4 are grounded, the other end respectively with
VDD- connection；
The detection circuit includes constant-current circuit and Hall detection circuit,
The constant-current circuit includes first resistor R1, second resistance R2, the first zener diode DZ1, the 5th diode D5, first
Triode Q1, the output end of the first zener diode DZ1 are connect with 12V power supply, and input terminal concatenates first resistor R1, described
The other end of first resistor R1 is grounded, and one end of the second resistance R2 is connect with 12V power supply, the other end and the first triode Q1
Collector connection, the input terminal of the 5th diode D5 connect with the base stage of the first triode Q1, and output end and first is surely
The input terminal connection of diode DZ1 is pressed, the emitter of the first triode Q1 is connect with the input terminal of Hall detection circuit, institute
Constant-current circuit is stated for powering to Hall detection circuit；
The Hall detection circuit includes the first Hall element H1, the second Hall element H2, third Hall element H3, the 4th Hall
Element H4 is formed a whole four Hall elements by adder；
The signal amplification circuit includes third Integrated circuit IC 3, adder circuit, zeroing circuit and modulation circuit,
The adder circuit is by 3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7,
Eight resistance R8, the 9th resistance R9 and the tenth resistance R10 composition, one end of the 3rd resistor R3 and the 4th resistance R4 are respectively with the
The output end of one Hall element H1 connects, one end of the 5th resistance R5 and the 6th resistance R6 respectively with the second Hall element H2
Output end connection, one end of the 7th resistance R7 and the 8th resistance R8 respectively with the output end of third Hall element H3 connect
It connects, one end of the 9th resistance R9 and the tenth resistance R10 is connect with the output end of the 4th Hall element H4 respectively, the third
Resistance R3, the 5th resistance R5, the 7th resistance R7 and the 9th resistance R9 the other end connect with the cathode of third Integrated circuit IC 3,
The other end and third Integrated circuit IC 3 of the 4th resistance R4, the 6th resistance R6, the 8th resistance R8 and the tenth resistance R10
Anode connection, the adder circuit are used to integrate the electric signal of Hall detection circuit；
The zeroing circuit is by eleventh resistor R11, twelfth resistor R12, the 15th resistance R15, the 16th resistance R16,
17 resistance R17, the second zener diode DZ2, third zener diode DZ3 and the second rheostat TR2, the eleventh resistor
One end of R11 is connect with 12V power supply, and the other end is connect with the output end of the second zener diode DZ2, the second zener diode
The input end grounding of DZ2, the output end of the second zener diode DZ2 are sequentially connected in series twelfth resistor R12, the second rheostat TR2
It is connect with one end of the 16th resistance R16, the 15th resistance R15 with 12V power supply, the other end and third zener diode
The input terminal of DZ3 connects, the output end ground connection of third zener diode DZ3, the other end of the 16th resistance R16 and third pressure stabilizing
The input terminal of diode DZ3 connects, and one end of the 17th resistance R17 is connected to the variable resistance on piece of the second rheostat TR2, separately
One end is connect with the cathode of third Integrated circuit IC 3；
The modulation circuit includes thirteenth resistor R13, the 14th resistance R14 and the first variable resistance piece TR1, the thirteenth resistor
R13 is feedback resistance, the anode of the third Integrated circuit IC 3 be sequentially connected in series thirteenth resistor R13, the first variable resistance piece TR1 and
The other end of 14th resistance R14, the 14th resistance R14 are grounded, and the variable resistance piece of the first variable resistance piece TR1 is connected to third collection
On output port at IC circuit 3；
The protection circuit includes the 6th anti-thunder tube D6 and the 7th anti-thunder tube D7, the model of the 6th anti-thunder tube D6
The signal of SMA4734A, breakdown voltage 5.6V, the 7th anti-thunder tube D7 are SMA4740A, breakdown voltage 10V, the described 6th
One end of anti-thunder tube D6 is connected to the input port of Hall detection circuit, and the other end is grounded, for being protected to Hall element,
The 7th anti-thunder tube D7 is connected on the output port of third Integrated circuit IC 3, other end ground connection；
The output port of the third Integrated circuit IC 3 connects the 18th resistance R18, the other end connection of the 18th resistance R18
Master control room, for being protected to output signal.
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Cited By (1)
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| CN110208598A (en) * | 2019-05-29 | 2019-09-06 | 上海空间电源研究所 | A kind of Hall current sensor circuit of double Hall element structures |
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Application publication date: 20190111 |