CN109975645A - A kind of optical isolation wide-voltage range electric leakage monitoring, alarming module - Google Patents

A kind of optical isolation wide-voltage range electric leakage monitoring, alarming module Download PDF

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Publication number
CN109975645A
CN109975645A CN201910264560.0A CN201910264560A CN109975645A CN 109975645 A CN109975645 A CN 109975645A CN 201910264560 A CN201910264560 A CN 201910264560A CN 109975645 A CN109975645 A CN 109975645A
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China
Prior art keywords
resistance
mould group
connect
electric leakage
alarm signal
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CN201910264560.0A
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CN109975645B (en
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朱健
陈松
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Chongqing Beimeting Technology Co Ltd
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Chongqing Beimeting Technology Co Ltd
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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
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

The invention discloses a kind of optical isolation wide-voltage range electric leakage monitoring, alarming modules, mould group is monitored including electric leakage, electrical resistance collection electric bridge mould group and alarm signal export mould group, electric leakage monitoring mould group includes first input end P4, second input terminal P5 and neon bulb LED1, electric leakage monitoring mould group is used to connect the shell of tested equipment, electrical resistance collection electric bridge mould group is oppositely arranged with electric leakage monitoring mould group, electrical resistance collection electric bridge mould group includes resistance R1, resistance R2, amplifier U1A, first power supply V1, photo resistance RG1 and resistance R8, for detecting the intensity of illumination of neon bulb LED1, to acquire the variation of photo resistance RG1, alarm signal output mould group is connect with electrical resistance collection electric bridge mould group, it includes triode Q1 that alarm signal, which exports mould group, second source V2, relay K1, phonetic alarm, with In output leakage-current alarm signal, realize that circuit structure is simple to the leakage tests of casing, it is at low cost, and detection range is wide.

Description

A kind of optical isolation wide-voltage range electric leakage monitoring, alarming module
Technical field
The present invention relates to electric leakage observation and control technology field more particularly to a kind of optical isolation wide-voltage range electric leakage monitoring, alarming moulds Block.
Background technique
Detection of electrical leakage alarm module is broadly divided into current detecting and two kinds of voltage detecting by testing principle.Current detecting principle The electric current that module is generally flowed through using Current Mutual Inductance coil or Hall element detection is to determine whether electric leakage, belongs to isolated inspection It surveys, but it needs to be determined that the path that leakage current flows through just can be carried out detection before detecting, the detection whether leaked electricity for casing is not It is too applicable.Voltage detecting principle divides transformation and partial pressure isolation two ways again, and voltage changing module generally passes through transformer or voltage High pressure is switched to low pressure and detected by mutual inductor, and this method is at high cost, and partial pressure isolation generally uses optocoupler by electric resistance partial pressure again The voltage range of isolation, this method detection is influenced by optocoupler parameter, and detection voltage range is narrow, and practical casing leaks electricity Or the voltage range of induction electric leakage from tens volts to kilovolt range the case where all there may be easy to happen safety accident.
Summary of the invention
The purpose of the present invention is to provide a kind of optical isolation wide-voltage range electric leakage monitoring, alarming modules, it is intended to solve electric leakage It is complicated to detect alarm module circuitry, at high cost, the narrow problem of detection range.
To achieve the above object, described the present invention provides a kind of optical isolation wide-voltage range electric leakage monitoring, alarming module Optical isolation wide-voltage range electric leakage monitoring, alarming module includes that electric leakage monitoring mould group, electrical resistance collection electric bridge mould group and alarm signal are defeated Depanning group, the electric leakage monitoring mould group are used to connect the shell of tested equipment, the electrical resistance collection electric bridge mould group and the leakage Pyroelectric monitor mould group is oppositely arranged, and the alarm signal output mould group is connect with the electrical resistance collection electric bridge mould group, for exporting leakage Electric alarm signal；
Wherein, electric leakage monitoring mould group includes first input end P4, the second input terminal P5 and neon bulb LED1, and described first Input terminal P4 is for connecting cabinet zero curve, and the second input terminal P5 is for connecting casing, the anode of the neon bulb LED1 It is connect with the first input end P4, the cathode of the neon bulb LED1 is connect with the second input terminal P5；
The electrical resistance collection electric bridge mould group includes resistance R1, resistance R2, amplifier U1A, the first power supply V1, photo resistance RG1 and resistance R8, the first end of the resistance R1, the first end of the resistance R2, the amplifier U1A the 8th end with it is described First power supply V1 connection, the photo resistance RG1 are oppositely arranged with the neon bulb LED1, the first end of the photo resistance RG1 It is connect with the second end of the second end of resistance R1 and the amplifier U1A, the first end of the resistance R8 is with the resistance R2's Second end connection, the second end of the photo resistance RG1, the second end of the resistance R8, the 4th end of the amplifier U1A are equal Connect ground terminal；
Alarm signal output mould group includes triode Q1, second source V2, relay K1, phonetic alarm, described The base stage of triode Q1 is connect with the first end of the amplifier U1A, the collector of the triode Q1, the relay K1 Anode and cathode are connect with the second source V2, the output end P1 connection phonetic alarm of the relay K1.
Wherein, electric leakage monitoring mould group further includes resistance R3, resistance R4, resistance R9 and resistance R10, the resistance R3's First end is connect with the first input end P4, and the first end of the resistance R4 is connect with the second end of the resistance R3, described The second end of resistance R4 is connect with the anode of the neon bulb LED1, and the first end of the resistance R9 is connect with the second input terminal P5, The first end of the resistance R10 is connect with the second end of resistance R9, and the second end of the resistance R10 is negative with the neon bulb LED1's Pole connection.
Wherein, electric leakage monitoring mould group further includes resistance R7, and the of the first end of the resistance R7 and the resistance R4 The anode connection at two ends and the neon bulb LED1, second end and the second end of the resistance R10 and the cathode of the neon bulb LED1 Connection.
Wherein, the electric leakage monitoring mould group further includes adjustable resistance R6, and the adjustable resistance R6 is in parallel with the resistance R7.
Wherein, the alarm signal output mould group further includes resistance R5, the first end of the resistance R5 and the amplifier The first end of U1A connects, and second end is connect with the base stage of the triode Q1.
Wherein, the alarm signal output mould group further includes resistance R11, the first end of the resistance R11 and the resistance The second end of R5 is connected with the base stage of the triode Q1, and second end connects ground terminal.
Wherein, the alarm signal output mould group further includes diode D1, anode and three pole of the diode D1 The collector of pipe Q1 is connected with the cathode of the relay K1, the cathode of the diode D1 and the second source V2 and described The anode connection of relay K1.
Wherein, alarm signal output mould group further includes Internet of Things collector, the Internet of Things collector and it is described after The output end P3 connection of electric appliance K1.
A kind of optical isolation wide-voltage range electric leakage monitoring, alarming module of the invention, monitoring mould group by the electric leakage includes The first input end P4, the second input terminal P5 and the neon bulb LED1, the electric leakage monitoring mould group are tested for connecting The shell of measurement equipment, the electrical resistance collection electric bridge mould group are oppositely arranged with electric leakage monitoring mould group, the electrical resistance collection electric bridge Mould group include the resistance R1, the resistance R2, the amplifier U1A, the first power supply V1, the photo resistance RG1 and The resistance R8, for detecting the intensity of illumination of the neon bulb LED1, so that the variation of the photo resistance RG1 is acquired, it is described Alarm signal output mould group is connect with the electrical resistance collection electric bridge mould group, and the alarm signal output mould group includes the triode Q1, the second source V2, the relay K1, the phonetic alarm are realized for exporting leakage-current alarm signal to cabinet The leakage tests of shell, circuit structure is simple, at low cost, and detection range is wide.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.
Fig. 1 is the flow diagram of optical isolation wide-voltage range electric leakage monitoring, alarming module of the present invention；
Fig. 2 is the circuit diagram of optical isolation wide-voltage range electric leakage monitoring, alarming module of the present invention；
In figure: 100- electric leakage monitoring mould group, 200- electrical resistance collection electric bridge mould group, 300- alarm signal export mould group.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " length ", " width ", "upper", "lower", "front", "rear", The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention System.In addition, in the description of the present invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
Fig. 1 to Fig. 2 is please referred to, the present invention provides a kind of optical isolation wide-voltage range electric leakage monitoring, alarming module, the light It includes electric leakage monitoring mould group 100, electrical resistance collection electric bridge mould group 200 and alarm signal that wide-voltage range electric leakage monitoring, alarming module, which is isolated, Number output mould group 300, the electric leakage monitoring mould group 100 are used to connect the shell of tested equipment, the electrical resistance collection electric bridge mould Group 200 is oppositely arranged with electric leakage monitoring mould group 100, the alarm signal output mould group 300 and the electrical resistance collection electric bridge Mould group 200 connects, for exporting leakage-current alarm signal；
Wherein, electric leakage monitoring mould group 100 includes first input end P4, the second input terminal P5 and neon bulb LED1, described First input end P4 is used to connect casing for connecting cabinet zero curve, the second input terminal P5, the neon bulb LED1's Positive to connect with the first input end P4, the cathode of the neon bulb LED1 is connect with the second input terminal P5；
The electrical resistance collection electric bridge mould group 200 includes resistance R1, resistance R2, amplifier U1A, the first power supply V1, photosensitive electricity Hinder RG1 and resistance R8, the first end of the resistance R1, the first end of the resistance R2, the 8th end of the amplifier U1A and institute The first power supply V1 connection is stated, the photo resistance RG1 is oppositely arranged with the neon bulb LED1, and the first of the photo resistance RG1 End is connect with the second end of the second end of resistance R1 and the amplifier U1A, the first end of the resistance R8 and the resistance R2 Second end connection, the second end of the photo resistance RG1, the second end of the resistance R8, the amplifier U1A the 4th end It is all connected with ground terminal；
The alarm signal output mould group 300 includes triode Q1, second source V2, relay K1, phonetic alarm, institute The base stage for stating triode Q1 is connect with the first end of the amplifier U1A, the collector of the triode Q1, the relay K1 Anode and cathode connect with the second source V2, the output end P1 connection phonetic alarm of the relay K1.
In the present embodiment, the neon bulb LED1 is a kind of luminous tube of colourless inert gas, the energy under electric field excitation The projection very strong Chinese red aura of power is generated, for operating current in 0.015~10mA, receivings voltage is 60V-1500V, and when 60V is sent out Brightness, the first input end P4 are connect with cabinet zero curve, and the second input terminal P5 is connect with casing, casing electrification When, forming circuit has electric current to pass through the neon bulb LED1.When input terminal has 60V alternating voltage, flow through the neon bulb LED1's Electric current is about 0.064mA, and when input terminal has 1500V alternating voltage, the electric current for flowing through the neon bulb LED1 is about 1.607mA, The range can make the neon bulb LED1 hair brightness.The photo resistance RG1 is based on inner photoeffect, the i.e. current-carrying of illumination generation Son is involved in conduction, makees drift motion under the action of extra electric field, and electronics marches on towards the anode of power supply, and hole marches on towards the negative of power supply Pole, so that the resistance value of the photo resistance RG1 be made to decline rapidly, illumination is stronger, and resistance value is lower, with the liter of intensity of illumination Height, resistance value reduce rapidly.The photo resistance RG1 is oppositely arranged with the neon bulb LED1, and dark is adjusted under part, the photosensitive electricity Resistance value >=3M the Ω for hindering RG1 is adjusted between the neon bulb LED1 and the photo resistance RG1 when the neon bulb LED1 sends out brightness Away from making the resistance value of the photo resistance between 25K Ω~50K Ω, formed between the neon bulb LED1 and the photo resistance RG1 Reliable isolation, it is ensured that safety.The resistance R1, the resistance R2, the resistance R8 and the amplifier U1A form electrical resistance collection Electric bridge, electrical resistance collection electric bridge are the instruments with the various resistance values of comparative method for measuring, and the amplifier U1A is dual operational amplifier, Inside includes that there are two the operational amplifiers that independent, high-gain, internal frequency compensate.Become by acquiring the photo resistance Change, the amplifier U1A output voltage variation, the triode Q1, the relay K1 and the phonetic alarm are relay Device driving output, it is when the variation of input quantity reaches prescribed requirement, electrical that the relay K1, which is a kind of electric control device, Make controlled variable that a kind of electric appliance of scheduled Spline smoothing occur in output circuit.Become by the amplifier U1A output voltage Change to drive the relay K1 to be attracted or disconnect, to play the role of alarm.The first power supply V1 is electrical resistance collection Electric bridge mould group 200 provides kinetic energy, and the second source V2 is that alarm signal output mould group 300 provides kinetic energy.Three pole It is small-signal to be zoomed into the biggish electric signal of range value that pipe Q1, which is a kind of semiconductor devices its effect for controlling electric current, is also used Make noncontacting switch.When having detected electricity, the triode Q1 is connected in the amplifier U1A output 12V, to drive institute It states relay K1 and is attracted output end P1 progress alert process；When detecting no electricity, the amplifier U1A output 0V, described three Pole pipe Q1 is not turned on, and the relay K1 is disconnected.The optical isolation wide-voltage range electric leakage monitoring, alarming module realizes circuit more Add simply, low cost, measure loop is more flexible, and detection range is wide, can substantially reduce detection of electrical leakage alarm cost of implementation, improve warp Ji benefit, either outdoor alternating current or factory's high pressure can realize detection and alarm.
A kind of optical isolation wide-voltage range electric leakage monitoring, alarming module of the invention, passes through the electric leakage and monitors mould group 100 Including the first input end P4, the second input terminal P5 and the neon bulb LED1, the electric leakage monitoring mould group 100 is for connecting The shell of tested equipment is connect, the electrical resistance collection electric bridge mould group 200 is oppositely arranged with electric leakage monitoring mould group 100, described Electrical resistance collection electric bridge mould group 200 includes the resistance R1, the resistance R2, the amplifier U1A, the first power supply V1, institute Photo resistance RG1 and the resistance R8 are stated, for detecting the intensity of illumination of the neon bulb LED1, to acquire the photo resistance The variation of RG1, the alarm signal output mould group 300 are connect with the electrical resistance collection electric bridge mould group 200, and the alarm signal is defeated Depanning group 300 includes the triode Q1, the second source V2, the relay K1, the phonetic alarm, for exporting Leakage-current alarm signal realizes that circuit structure is simple to the leakage tests of casing, at low cost, and detection range is wide.
Further, electric leakage monitoring mould group 100 further includes resistance R3, resistance R4, resistance R9 and resistance R10, described The first end of resistance R3 is connect with the first input end P4, and the second end of the first end of the resistance R4 and the resistance R3 connect It connects, the second end of the resistance R4 is connect with the anode of the neon bulb LED1, the first end and the second input terminal of the resistance R9 The first end of P5 connection, the resistance R10 is connect with the second end of resistance R9, the second end of the resistance R10 and the neon bulb The cathode of LED1 connects.In the present embodiment, the resistance R3, the resistance R4, the resistance R9 and the resistance R10 are Current-limiting resistance, while playing the role of rectification.
Further, the electric leakage monitoring mould group 100 further includes resistance R7, the first end of the resistance R7 and the resistance The anode connection of the second end of R4 and the neon bulb LED1, the second end and the neon bulb LED1 of second end and the resistance R10 Cathode connection.In the present embodiment, the resistance R7 is in parallel with the neon bulb LED1, to shunt, prevents circuital current It is excessive, burn out the neon bulb LED1.
Further, the electric leakage monitoring mould group 100 further includes adjustable resistance R6, the adjustable resistance R6 and the resistance R7 is in parallel.In the present embodiment, the adjustable resistance R6 is the adjustable resistance of resistance value, to meet the needs of circuit, Resistance adjustment, the neon bulb LED1 and resistance R7 described in divided current are carried out to adjust resistance value according to circuital current size.
Further, alarm signal output mould group 300 further includes resistance R5, the first end of the resistance R5 with it is described The first end of amplifier U1A connects, and second end is connect with the base stage of the triode Q1.In the present embodiment, the resistance R5 avoids circuital current excessive to current limliting, damages the amplifier U1A.
Further, the alarm signal output mould group 300 further includes resistance R11, the first end of the resistance R11 and institute The second end for stating resistance R5 is connected with the base stage of the triode Q1, and second end connects ground terminal.In the present embodiment, the electricity R11 is hindered to shunt, and when circuital current is excessive, directly side is connected to ground, avoids burning out the triode Q1, improves component Service life.
Further, the alarm signal output mould group 300 further includes diode D1, the anode of the diode D1 and institute The collector for stating triode Q1 is connected with the cathode of the relay K1, the cathode of the diode D1 and the second source V2 With the anode connection of the relay K1.In the present embodiment, the diode D1 only allows electric current to be passed through by single direction, It is blocked when reversed.After the triode Q1 conducting, electric current can only be from the anode of the diode D1 bearing to the diode D1 Pole, then to the anode flow of the relay K1, the cathode of the relay K1 is flowed to, it is formed into a loop, the second source V2 Also kinetic energy can only be provided to alarm signal output mould group 300 to the anode flow of the relay K1.
Further, alarm signal output mould group 300 further includes Internet of Things collector, the Internet of Things collector with The output end P3 connection of the relay K1.In the present embodiment, when leakage conductance indoor in cabinet causes outer casing electrification, the report Alert signal output mould group 300 exports closure signal and excites the phonetic alarm, while the Internet of Things collector uploads data It notifies personnel to handle in time to monitoring center, effectively avoids accident.
Above disclosed is only a preferred embodiment of the present invention, cannot limit the power of the present invention with this certainly Sharp range, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and weighs according to the present invention Benefit requires made equivalent variations, still belongs to the scope covered by the invention.

Claims (8)

  1. The monitoring, alarming module 1. a kind of optical isolation wide-voltage range leaks electricity, which is characterized in that
    Mould group is exported including electric leakage monitoring mould group, electrical resistance collection electric bridge mould group and alarm signal, the electric leakage monitoring mould group is used for The shell of tested equipment is connected, the electrical resistance collection electric bridge mould group is oppositely arranged with electric leakage monitoring mould group, the alarm Signal output mould group is connect with the electrical resistance collection electric bridge mould group, for exporting leakage-current alarm signal；
    Wherein, the electric leakage monitoring mould group includes first input end P4, the second input terminal P5 and neon bulb LED1, first input End P4 is for connecting cabinet zero curve, and the second input terminal P5 is for connecting casing, the anode of the neon bulb LED1 and institute First input end P4 connection is stated, the cathode of the neon bulb LED1 is connect with the second input terminal P5；
    The electrical resistance collection electric bridge mould group include resistance R1, resistance R2, amplifier U1A, the first power supply V1, photo resistance RG1 and Resistance R8, the first end of the resistance R1, the first end of the resistance R2, the amplifier U1A the 8th end and described first Power supply V1 connection, the photo resistance RG1 are oppositely arranged with the neon bulb LED1, the first end and electricity of the photo resistance RG1 The second end of resistance R1 is connected with the second end of the amplifier U1A, and the second of the first end of the resistance R8 and the resistance R2 End connection, the second end of the photo resistance RG1, the second end of the resistance R8, the amplifier U1A the 4th end be all connected with Ground terminal；
    The alarm signal output mould group includes triode Q1, second source V2, relay K1, phonetic alarm, three pole The base stage of pipe Q1 is connect with the first end of the amplifier U1A, the anode of the collector of the triode Q1, the relay K1 It is connect with cathode with the second source V2, the output end P1 connection phonetic alarm of the relay K1.
  2. The monitoring, alarming module 2. optical isolation wide-voltage range as described in claim 1 leaks electricity, which is characterized in that
    Electric leakage monitoring mould group further includes resistance R3, resistance R4, resistance R9 and resistance R10, the first end of the resistance R3 with The first input end P4 connection, the first end of the resistance R4 are connect with the second end of the resistance R3, the resistance R4's Second end is connect with the anode of the neon bulb LED1, and the first end of the resistance R9 is connect with the second input terminal P5, the resistance The first end of R10 is connect with the second end of resistance R9, and the second end of the resistance R10 is connect with the cathode of the neon bulb LED1.
  3. The monitoring, alarming module 3. optical isolation wide-voltage range as claimed in claim 2 leaks electricity, which is characterized in that
    Electric leakage monitoring mould group further includes resistance R7, the second end of the first end of the resistance R7 and the resistance R4 and described The anode connection of neon bulb LED1, second end are connect with the cathode of the second end of the resistance R10 and the neon bulb LED1.
  4. The monitoring, alarming module 4. optical isolation wide-voltage range as claimed in claim 3 leaks electricity, which is characterized in that
    The electric leakage monitoring mould group further includes adjustable resistance R6, and the adjustable resistance R6 is in parallel with the resistance R7.
  5. The monitoring, alarming module 5. optical isolation wide-voltage range as described in claim 1 leaks electricity, which is characterized in that
    The alarm signal output mould group further includes resistance R5, and the first of the first end of the resistance R5 and the amplifier U1A End connection, second end are connect with the base stage of the triode Q1.
  6. The monitoring, alarming module 6. optical isolation wide-voltage range as claimed in claim 5 leaks electricity, which is characterized in that
    The alarm signal output mould group further includes resistance R11, the second end of the first end of the resistance R11 and the resistance R5 It is connected with the base stage of the triode Q1, second end connects ground terminal.
  7. The monitoring, alarming module 7. optical isolation wide-voltage range as described in claim 1 leaks electricity, which is characterized in that
    The alarm signal output mould group further includes diode D1, the current collection of the anode and the triode Q1 of the diode D1 Pole is connected with the cathode of the relay K1, and the cathode of the diode D1 is with the second source V2's and relay K1 Anode connection.
  8. The monitoring, alarming module 8. optical isolation wide-voltage range as described in claim 1 leaks electricity, which is characterized in that
    The alarm signal output mould group further includes Internet of Things collector, and the Internet of Things collector is defeated with the relay K1's Outlet P3 connection.
CN201910264560.0A 2019-04-03 2019-04-03 Optical isolation wide voltage range electric leakage monitoring alarm module Active CN109975645B (en)

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CN112217499A (en) * 2020-11-06 2021-01-12 成都扭了么网络科技有限公司 Drive control apparatus, method and storage medium for a plurality of electromechanical interlocks
CN114708714A (en) * 2022-04-02 2022-07-05 重庆交通职业学院 Visual environmental protection equipment service management system based on big data

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CN112217499A (en) * 2020-11-06 2021-01-12 成都扭了么网络科技有限公司 Drive control apparatus, method and storage medium for a plurality of electromechanical interlocks
CN114708714A (en) * 2022-04-02 2022-07-05 重庆交通职业学院 Visual environmental protection equipment service management system based on big data

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