CN107861016A - One kind ground wire disconnects automatic failure alarm device - Google Patents
One kind ground wire disconnects automatic failure alarm device Download PDFInfo
- Publication number
- CN107861016A CN107861016A CN201711110374.9A CN201711110374A CN107861016A CN 107861016 A CN107861016 A CN 107861016A CN 201711110374 A CN201711110374 A CN 201711110374A CN 107861016 A CN107861016 A CN 107861016A
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- emitting diode
- light emitting
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- pin
- resistance
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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 Protection Circuit Devices (AREA)
Abstract
One kind ground wire disconnects automatic failure alarm device and is divided into three parts：1st, circuit is picked up in inspection, and 2, negative logic output circuit, 3, execution circuit.The light emitting diode that circuit is picked up in inspection sends light after high value resistor current limliting, and the grounded line of electric current of light emitting diode releases cause greatly；Therefore photo resistance in negative logic output circuit receives irradiation and exports low level, so as to not drive alarm element to work.If the ground wire section after examining the light emitting diode picked up in circuit disconnects or ground wire resistance to earth is excessively huge, the light emitting diode that then inspection is picked up in circuit does not light, photo resistance in negative logic circuit loses illumination, then its resistance becomes very big, negative logic output circuit exports high level, the buzzer and LED operation in execution circuit are driven, is grounded fault alarm function, while the RCCB on alternating current circuit trips therewith.
Description
Technical field
The present invention relates to the technical scheme of monitoring 220V alternating current circuits equipment ground line ground state.
Background technology
There is the probability for taking dangerous voltage in the shell of 220V alternating current circuits access device, when setting access because of electric leakage
On standby shell band during dangerous voltage, in order to ensure human-body safety, ground wire need to be connected between shell and the earth, reduces shell leakage
Piezoelectric voltage is to protect human body.If ground wire disconnects or the access resistance between ground wire and the earth becomes too much, protection work(is lost
Can be, it is necessary to there is related monitoring device to be alerted and disconnect circuit general switch, present invention seek to address that this demand.
The content of the invention
Apparatus of the present invention are divided into three parts：1st, circuit is picked up in inspection；2nd, negative logic output circuit；3rd, execution circuit.
The composition of circuit is picked up in inspection：Resistance R1 and light emitting diode D1 series connection, the remaining another pin of resistance R1 snap into circuit
Phase wiretap S1 on, the remaining another pin of light emitting diode D1 are connected on ground wire.
Negative logic output circuit：Using NE555P integrated packages as core circuit, 4 pin of the integrated package, 8 pin and photo resistance R2
A certain pin and the switch S2 concatenated with 5 volts of DC power anodes another pin be connected to altogether a bit, that is, interconnect；It is described
A certain pin and the electrochemical capacitor C2 of 2 pin of NE555P integrated packages, 6 pin and resistance R3 positive pole pin is connected to a bit altogether, i.e., is mutually connected
Connect；Ceramic disc capacitor C3 bipod is connected with 1 pin of the integrated package and 5 pin respectively；Certain of the negative pole pin of electrochemical capacitor and resistance R4
1 pin of one pin and the integrated package is commonly connected on the negative pole of 5 volts of dc sources；Resistance R4 another pin, photo resistance R2 it is another
Pin, resistance R3 another pin are interconnected in a bit.3 pin of the integrated package are connected with the switch a certain pin of S3.
Execution circuit：The switch S3 described above a certain pin of another pin, buzzer, light emitting diode D2 anode is connected to altogether
A bit, that is, interconnect；Another pin of buzzer is connected to+5V DC power cathodes；Light emitting diode D2 negative electrode is connected to
Electrochemical capacitor C3 positive pole pin, light emitting diode D2 negative electrode are also connected to the primary of the ZCT of RCCB simultaneously
Coil（Can the circle of coiling 15）Certain one end, electrochemical capacitor C4 negative pole pin and the ZCT primary line of the RCCB
The other end of circle is connected to the negative pole of+5V dc sources altogether.
The light of the exiting surface and the photo resistance R2 in negative logic output circuit of the light emitting diode D1 in circuit is picked up in inspection
Face face is close to and encapsulated, and light leak is not also water-tight.
Above-described negative logic output circuit and execution circuit share same+5V dc sources.
Operation principle of the present invention:If the phase line of power frequency circuit is lasting powered, and the earthing of casing line of each electrical equipment of circuit
It is connected with the earth good（Grounding resistance is less than 10 Ω）, then power frequency line phase, closure switch S1, resistance R1, light-emitting diode
Pipe D1, ground wire, the earth, and the ground connection of phase line direct-to-ground capacitance or supply station form loop and Light-Emitting Diode D1 is lighted,
Light is irradiated on photo resistance R2 smooth surface, and photo resistance R2 resistance becomes minimum, causes in negative logic output circuit
Core parts NE555P integrated packages 3 pin output low level（OV）, then the buzzer in execution circuit, light emitting diode D2 are equal
Do not work, RCCB ZCT primary coil does not have electric current by the way that the breaker does not trip.
In the case of power frequency circuit normal power supply, if section of the ground wire described above after light emitting diode D1
Disconnect or it is much larger than 10 Ω with the earth contact resistance, then light emitting diode D1 stops luminous, the light in negative logic output circuit
Quick resistance R1 is not illuminated, then photo resistance becomes very big, core parts NE555P collection in negative logic output circuit
Blocking 3 pin output high level（+5V）, so as to drive buzzer and the light emitting diode D2 work in execution circuit, to people
Alarm earth fault has occurred and that, while the RCCB tripping operation on alternating current circuit described above.
Accompanying drawing Fig. 1：This figure disconnects automatic failure alarm schematic diagram of device for a kind of ground wire
Circuit is picked up in inspection：1M Ω resistance R1, light emitting diode D1（LED 3V）, switch S1, ac capacitor C1（400V）.
Negative logic output circuit：NE555P integrated packages, 10K Ω resistance R3,100K Ω resistance R4, electrochemical capacitor C2（25V、
10 uF）, ceramic disc capacitor C3（0.01 uF）, 1K Ω photo resistance R2
Execution circuit：Switch S3, light emitting diode D2（LED 3V）, RCCB ZCT primary coil L, electricity
Solve electric capacity C4（6.3V 4.7 uF）, buzzer HA.
Embodiment：Turned on the electricity as shown in accompanying drawing 1, carry out External Insulation, ensure, then successively closure switch S1, S2,
S3.
Claims (2)
1. switch S1, resistance R1 its Standard resistance range for 33K Ω to 1M Ω between, certain pin series connection of both and light emitting diode, open
Another pin closed is snapped into the phase line of power frequency circuit, and another pin of light emitting diode is snapped on ground wire, apparatus of the present invention
Monitoring is implemented to the ground wire section after the light emitting diode, implements to disconnect failure or the excessive alarm of grounding resistance；It is described
The light-emitting area of light emitting diode and tight as the photo resistance smooth surface face in the negative logic circuit of core using NE555P integrated packages
Paste and seal；3 pin of NE555P integrated packages are connected with the switch a certain pin of S3, a certain pin of another pin, buzzer of the switch S3,
Light emitting diode D2 anode is connected to a bit altogether, that is, is interconnected；Another pin of buzzer is connected to+5V DC power cathodes；
Light emitting diode D2 negative electrode is connected to electrochemical capacitor C4 positive pole pin, and light emitting diode D2 negative electrode is also connected to electric leakage simultaneously
The primary coil of the ZCT of breaker（Can the circle of coiling 15）Certain one end, electrochemical capacitor C3 negative pole pin and the electric leakage
The other end of the ZCT primary coil of breaker is connected to the negative pole of+5V dc sources altogether.
2. apparatus of the present invention use unique dc source（+5V）, switch S2 is installed at its positive pole top；Initially enabling this dress
When putting monitoring grounding wire connection the earth situation, closure switch S1, S2, S3 successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711110374.9A CN107861016A (en) | 2017-11-12 | 2017-11-12 | One kind ground wire disconnects automatic failure alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711110374.9A CN107861016A (en) | 2017-11-12 | 2017-11-12 | One kind ground wire disconnects automatic failure alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107861016A true CN107861016A (en) | 2018-03-30 |
Family
ID=61700203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711110374.9A Pending CN107861016A (en) | 2017-11-12 | 2017-11-12 | One kind ground wire disconnects automatic failure alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107861016A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646164A (en) * | 2018-07-26 | 2018-10-12 | 大力电工襄阳股份有限公司 | High-pressure thyristor on-Line Monitor Device |
| CN108845238A (en) * | 2018-07-26 | 2018-11-20 | 大力电工襄阳股份有限公司 | High-pressure thyristor on-Line Monitor Device and multiple groups high-pressure thyristor monitoring device |
| CN109462208A (en) * | 2018-12-28 | 2019-03-12 | 韦明肯 | A kind of electrical shock circuit breaker design |
Citations (8)
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| CN101046490A (en) * | 2007-04-24 | 2007-10-03 | 刘锦泰 | Alarm device for abnormality in earthing system |
| CN101452035A (en) * | 2007-12-04 | 2009-06-10 | 肖秋贵 | Electric appliance earthing status monitoring circuit |
| US20120242494A1 (en) * | 2011-03-23 | 2012-09-27 | Hon Hai Precision Industry Co., Ltd. | Power-saving reminder circuit for computer |
| CN202906133U (en) * | 2012-11-19 | 2013-04-24 | 重庆盾之王实业有限公司 | Leakage protective socket |
| CN103076488A (en) * | 2013-01-04 | 2013-05-01 | 丁希庆 | Non-contact-induction-type voltage tester |
| CN103606234A (en) * | 2013-11-13 | 2014-02-26 | 苏州天擎电子通讯有限公司 | An antitheft alarm device used in a desk drawer |
| CN103837475A (en) * | 2012-11-27 | 2014-06-04 | 深圳市海洋王照明工程有限公司 | Alarm circuit |
| CN107290617A (en) * | 2017-07-30 | 2017-10-24 | 苏州星阁星诚机电工程有限公司 | A kind of receptacle grounds electric-leakage detection circuit |
-
2017
- 2017-11-12 CN CN201711110374.9A patent/CN107861016A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101046490A (en) * | 2007-04-24 | 2007-10-03 | 刘锦泰 | Alarm device for abnormality in earthing system |
| CN101452035A (en) * | 2007-12-04 | 2009-06-10 | 肖秋贵 | Electric appliance earthing status monitoring circuit |
| US20120242494A1 (en) * | 2011-03-23 | 2012-09-27 | Hon Hai Precision Industry Co., Ltd. | Power-saving reminder circuit for computer |
| CN202906133U (en) * | 2012-11-19 | 2013-04-24 | 重庆盾之王实业有限公司 | Leakage protective socket |
| CN103837475A (en) * | 2012-11-27 | 2014-06-04 | 深圳市海洋王照明工程有限公司 | Alarm circuit |
| CN103076488A (en) * | 2013-01-04 | 2013-05-01 | 丁希庆 | Non-contact-induction-type voltage tester |
| CN103606234A (en) * | 2013-11-13 | 2014-02-26 | 苏州天擎电子通讯有限公司 | An antitheft alarm device used in a desk drawer |
| CN107290617A (en) * | 2017-07-30 | 2017-10-24 | 苏州星阁星诚机电工程有限公司 | A kind of receptacle grounds electric-leakage detection circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646164A (en) * | 2018-07-26 | 2018-10-12 | 大力电工襄阳股份有限公司 | High-pressure thyristor on-Line Monitor Device |
| CN108845238A (en) * | 2018-07-26 | 2018-11-20 | 大力电工襄阳股份有限公司 | High-pressure thyristor on-Line Monitor Device and multiple groups high-pressure thyristor monitoring device |
| CN109462208A (en) * | 2018-12-28 | 2019-03-12 | 韦明肯 | A kind of electrical shock circuit breaker design |
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| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180330 |
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| WD01 | Invention patent application deemed withdrawn after publication |