CN204758745U - It connects instead and unusual detection circuitry of ground wire to exchange electrical zero live wire - Google Patents
It connects instead and unusual detection circuitry of ground wire to exchange electrical zero live wire Download PDFInfo
- Publication number
- CN204758745U CN204758745U CN201520462128.XU CN201520462128U CN204758745U CN 204758745 U CN204758745 U CN 204758745U CN 201520462128 U CN201520462128 U CN 201520462128U CN 204758745 U CN204758745 U CN 204758745U
- Authority
- CN
- China
- Prior art keywords
- resistance
- ground wire
- connects
- live wire
- electric capacity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model provides an it connects instead and unusual detection circuitry of ground wire to exchange electrical zero live wire mainly includes: zero live wire connects anti - detection loop, the unusual detection loop of ground wire, signal output return circuit, and zero live wire meets anti - detection loop's signal output end, the unusual detection loop's of ground wire the equal and signal output loop connection of output, and the unusual detection loop's of ground wire PE input is connected with L input, N input respectively, and the signal output return circuit is connected with the consumer controller. Collect zero live wire and connect anti - discernment, the unusual recognition function of ground wire in an organic whole, zero live wire zero live wire connect turn over and/or the condition that the ground wire is unusual under, can accurate judge the trouble and give the controller of consumer with signal output, and then the outage in time of taking measures of the controller of consumer, effectively ensure user electrical safety, reduce the injured and fatality accident.
Description
Technical field
The utility model relates to testing circuit technical field, particularly relates to a kind of electrical zero live wire that exchanges and connects anti-and ground wire abnormal detection circuit.
Background technology
In the widely used modern life of household electrical appliance, China's household electricity Environmental Status more and more allows of no optimist, and the situations such as zero live wire connects instead, ground wire abnormal (comprising no ground, ground wire electrification unreliable with ground connection) have become produced problem often.In this case use household electrical appliance once electric leakage, will Outer Casing of Home Electric Appliance Being Live be made, and finally will certainly cause electric shock casualty accident.Have in prior art and judge that separately zero live wire connects anti-circuit or judges separately the circuit of ground wire exception, two kinds of circuit output signal respectively by the different way of outputs, complex structure and simultaneously can not detect various faults.For overcoming above-mentioned defect, anti-and ground wire abnormal detection circuit being connect to interchange electrical zero live wire and develops.
Summary of the invention
Technical problem to be solved in the utility model to provide a kind of electrical zero live wire that exchanges to connect anti-and ground wire abnormal detection circuit, it is simple that it has structure, integrate zero live wire and connect anti-identification, ground wire anomalous identification function, when zero live wire connects instead and/or ground wire is abnormal, can accurately judge various fault and signal be exported to the controller of consumer, and then the controller of consumer is taken measures timely power-off, effectively guarantees user power utilization safety, reduce human casualty accident.
The technical scheme that the utility model solves the employing of its technical matters is: comprise zero live wire and connect anti-measure loop, ground wire abnormality detection loop, signal output loop, zero live wire connects the L input end of anti-measure loop, N input end respectively with power firestreak, zero line connects, the PE input end in ground wire abnormality detection loop is connected with power ground, zero live wire connects the signal output part of anti-measure loop, the output terminal in ground wire abnormality detection loop is all connected with signal output loop, the PE input end in ground wire abnormality detection loop connects the L input end of anti-measure loop respectively with zero live wire, N input end connects, signal output loop is connected with consumer controller.
Zero described live wire connects anti-measure loop and comprises the resistance R37, resistance R38, the diode D21 that are sequentially connected in series between L input end and N input end, and the positive pole of diode D21 is connected with zero-power line, and the negative pole of diode D21 is connected with signal output loop.
Described signal output loop comprises resistance R40, photoelectrical coupler U8, resistance R41, resistance R42, electric capacity C30, the negative pole of positive pole the 1st pin contact resistance R40 to diode D21 of the light emitting source of photoelectrical coupler U8, negative pole the 2nd pin of the light emitting source of photoelectrical coupler U8 connects the zero line of power supply, the 3rd pin ground connection of photoelectrical coupler U8, the 4th pin contact resistance R41 of photoelectrical coupler U8 outputs signal to the 4th pin of+5V, photoelectrical coupler U8 by connecting electric capacity C30 and series resistor R42.
Described ground wire abnormality detection loop comprises electric capacity C27, electric capacity C28, electric capacity C29, resistance R34, resistance R35, resistance R36, diode D20, NPN type triode Q5, NPN type triode Q6, resistance R39, PE input end one end is connected with ground wire, and the other end connects electric capacity C27, electric capacity C29, electric capacity C28, electric capacity C27, the other end of electric capacity C29 connects L input end and N input end respectively, the other end contact resistance R34 of electric capacity C28, resistance R34 other end contact resistance R35 successively, resistance R36 is to the zero line of power supply, diode D20 is in parallel with resistance R36, the negative pole of diode D20 is connected to the ground level of NPN type triode Q5, the emitting stage E of NPN type triode Q5 is connected to the zero line of power supply, the current collection level of NPN type triode Q5 is connected to the ground level of NPN type triode Q6 and one end of resistance R39 simultaneously, the other end of resistance R39 is connected to the current collection level C of NPN type triode Q6, the current collection level C of NPN type triode Q6 is connected to the negative pole of diode D21, and the emitting stage of NPN type triode Q6 is connected to the zero line of power supply.
Described ground wire abnormality detection loop also comprises the Zener diode D19 be serially connected between resistance R34 and resistance R35, and the negative pole of Zener diode D19 is connected with resistance R34, and the positive pole of Zener diode D19 is connected with resistance R35.
Described electric capacity C27, electric capacity C29, electric capacity C28 are safety Y capacitance.
Described resistance R37, resistance R38 are carbon resister.
Described diode D20, the model of diode D21 are 1N4004 or 1N4007.
The utility model compares produced beneficial effect with background technology: take to comprise zero live wire due to the utility model and connect anti-measure loop, ground wire abnormality detection loop, signal output loop, zero live wire connects the L input end of anti-measure loop, N input end respectively with power firestreak, zero line connects, the PE input end in ground wire abnormality detection loop is connected with power ground, it is characterized in that zero live wire connects the signal output part of anti-measure loop, the output terminal in ground wire abnormality detection loop is all connected with signal output loop, the PE input end in ground wire abnormality detection loop connects the L input end of anti-measure loop respectively with zero live wire, N input end connects, the scheme that signal output loop is connected with consumer controller, structure is simple, collect zero live wire and connect anti-identification, ground wire anomalous identification function is in one, at zero live wire when zero live wire connects instead and/or ground wire is abnormal, accurately can judge fault and signal be exported to the controller of consumer, and then the controller of consumer is taken measures timely power-off, effectively guarantee user power utilization safety, reduce human casualty accident.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model;
Ac power waveform when Fig. 2 is the utility model zero live wire, ground wire all connects normal and output signal diagram;
Fig. 3 is that the utility model zero live wire connects ac power waveform when normal, ground wire connects abnormal and output signal diagram;
Ac power waveform when Fig. 4 is that the utility model zero live wire connects instead, ground wire connects normal or zero live wire connects instead, ground wire connects exception and output signal diagram.
Embodiment
Referring to accompanying drawing 1, the present embodiment comprises the L input end, N input end, the PE input end that are connected with power firestreak, zero line, ground wire respectively, also comprise: zero live wire connects anti-measure loop, ground wire abnormality detection loop, signal output loop, zero live wire connects the signal output part of anti-measure loop, the output terminal in ground wire abnormality detection loop is all connected with signal output loop, the PE input end in ground wire abnormality detection loop connects the L input end of anti-measure loop respectively with zero live wire, N input end is connected, and signal output loop is connected with consumer controller.
Particularly, zero described live wire connects anti-measure loop and comprises the resistance R37, resistance R38, the diode D21 that are sequentially connected in series between L input end and N input end, the positive pole of diode D21 is connected with zero-power line, and the negative pole of diode D21 is connected with signal output loop.
Described signal output loop comprises resistance R40, photoelectrical coupler U8, resistance R41, resistance R42, electric capacity C30, the negative pole of positive pole the 1st pin contact resistance R40 to diode D21 of the light emitting source of photoelectrical coupler U8, negative pole the 2nd pin of the light emitting source of photoelectrical coupler U8 connects the zero line of power supply, the 3rd pin ground connection of photoelectrical coupler U8, the 4th pin contact resistance R41 of photoelectrical coupler U8 outputs signal to the 4th pin of+5V, photoelectrical coupler U8 by connecting electric capacity C30 and series resistor R42.
Described ground wire abnormality detection loop comprises electric capacity C27, electric capacity C28, electric capacity C29, resistance R34, resistance R35, resistance R36, diode D20, NPN type triode Q5, NPN type triode Q6, resistance R39, PE input end one end is connected with ground wire, and the other end connects electric capacity C27, electric capacity C29, electric capacity C28, electric capacity C27, the other end of electric capacity C29 connects L input end and N input end respectively, the other end contact resistance R34 of electric capacity C28, resistance R34 other end contact resistance R35 successively, resistance R36 is to the zero line of power supply, diode D20 is in parallel with resistance R36, the negative pole of diode D20 is connected to the ground level of NPN type triode Q5, the emitting stage E of NPN type triode Q5 is connected to the zero line of power supply, the current collection level of NPN type triode Q5 is connected to the ground level of NPN type triode Q6 and one end of resistance R39 simultaneously, the other end of resistance R39 is connected to the current collection level C of NPN type triode Q6, the current collection level C of NPN type triode Q6 is connected to the negative pole of diode D21, and the emitting stage of NPN type triode Q6 is connected to the zero line of power supply.
Preferably, described ground wire abnormality detection loop also comprises the Zener diode D19 be serially connected between resistance R34 and resistance R35, and the negative pole of Zener diode D19 is connected with resistance R34, and the positive pole of Zener diode D19 is connected with resistance R35.Zener diode D19 mainly plays the booster action of the measurement precision to ground strip piezoelectric voltage volt value in ground wire abnormality detection loop, namely during ground wire electrification, by Zener diode D19, charged value size can be embodied by the width exporting pulse in square wave, is convenient to fault handling.
Preferably, described electric capacity C27, electric capacity C29, electric capacity C28 are safety Y capacitance, adopt safety Y capacitance effectively can improve the security of integrated circuit.
Preferably, described resistance R37, resistance R38 are carbon resister, durable.
In the present embodiment, the Y capacitance value of electric capacity C27, electric capacity C28, electric capacity C29 is 102 ~ 222PF; The Standard resistance range of resistance R34, resistance R35, resistance R36 is >=2M Ω; The model of diode D20, diode D21 is 1N4004 or 1N4007; The Standard resistance range of resistance R37, resistance R38 is 10K ~ 30K Ω, and corresponding power is 2W or 3W; The resistance of resistance R39 is 4.7k, and corresponding power is 1/4W; The resistance of resistance R40, resistance R42 is 1K Ω, and corresponding power is 1/8W ~ 1/4W; The resistance of resistance R41 is 10K Ω, and corresponding power is 1/8W ~ 1/4W; The capacitance value range of electric capacity C30 is 100PF ~ 103nF.
The principle of work of the present embodiment is as follows:
Under normal circumstances, L input end, N input end, PE input end all normally connect, now NPN type triode Q5 is cut-off state, NPN type triode Q6 is then conducting state, the negative battery voltage of diode D21 is caused to be dragged down, thus cause the 1st pin voltage of photoelectrical coupler U8 to be dragged down, finally cause the 4th pin magnitude of voltage of photoelectrical coupler U8 unchanged and be+5V high level always.Its ac power waveform and output signal are referring to Fig. 2.
When ground wire PE does not connect, ground wire PE end then brings voltage by electric capacity C27, and NPN type triode Q5 is conducting then, and the ground level B voltage of NPN type triode Q6 is dragged down, and is finally cut-off state.Electric current flows through the 1st pin of resistance R40 and photoelectrical coupler U8 by live wire L input end, causes the 4th pin magnitude of voltage of photoelectrical coupler U8 to become low level from+5V high level, by alternating current dextrorotation waves alternation, thus produces square-wave signal output.Its ac power waveform and output signal are referring to Fig. 3.
Zero live wire connects under normal circumstances, the output waveform of ground wire electrification situation and ground wire do not connect output waveform in situation, and much the same (the following square-wave pulse width of 50VAC voltage is slightly distinguished, but overall consistent, therefore no longer distinguish), its ac power waveform and output signal are referring to Fig. 3.
When zero line N input end and live wire L input end connect mutually instead, when ground wire PE normally connects, when live wire L input end is sinusoidal wave negative half period, magnitude of voltage residing for ground wire PE input end is then high than the magnitude of voltage residing for live wire L input end, thus NPN type triode Q5 then conducting, the ground level B voltage of NPN type triode Q6 is dragged down, and is finally cut-off state.Electric current flows through the 1st pin of resistance R40 and photoelectrical coupler U8 by live wire L input end, causes the 4th pin magnitude of voltage of photoelectrical coupler U8 to become low level from+5V high level, by alternating current dextrorotation waves alternation, thus produces square-wave signal output.Its ac power waveform and output signal are referring to Fig. 4.
When zero line N input end and live wire L input end connect mutually instead, when ground wire PE input end connects extremely.When live wire L input end is the positive half cycle of dextrorotation ripple, only forms live wire L and hold electric current through diode D21, resistance R38, resistance R37, the final zero line N that arrives holds, and signal output part magnitude of voltage is unchanged and be+5V high level always.When live wire L input end is the negative half period of dextrorotation ripple, the magnitude of voltage residing for ground wire PE holds is higher than the magnitude of voltage residing for live wire L input end, then NPN type triode Q5 then conducting, the ground level B voltage of NPN type triode Q6 is dragged down, and is finally cut-off state.Electric current flows through the 1st pin of resistance R40 and photoelectrical coupler U8 by live wire L input end, causes the 4th pin magnitude of voltage of photoelectrical coupler U8 to become low level from+5V high level, by alternating current dextrorotation waves alternation, thus produces square-wave signal output.Its ac power waveform and output signal are referring to Fig. 4.
This circuit integrates zero live wire and connects anti-identification, abnormal (not connecing or the ground wire electrification) recognition function of ground wire, zero live wire connects designature delivery outlet and ground wire abnormal signal exports as same delivery outlet, zero live wire connects that anti-various faults exists simultaneously and also can not affect the result of determination of this circuit to fault with ground wire exception etc., structure is simple, accuracy of judgement, cost are low, are applicable to various household electrical appliance.Output signal feeds back to the controller of consumer, controller just can cut out consumer, also can show corresponding failure code on the display of consumer, be convenient to maintenance personal's detection failure, finally effectively guarantee user power utilization safety, reduce human casualty accident.
Claims (8)
1. an interchange electrical zero live wire connects anti-and ground wire abnormal detection circuit, comprise zero live wire and connect anti-measure loop, ground wire abnormality detection loop, signal output loop, zero live wire connects the L input end of anti-measure loop, N input end respectively with power firestreak, zero line connects, the PE input end in ground wire abnormality detection loop is connected with power ground, it is characterized in that zero live wire connects the signal output part of anti-measure loop, the output terminal in ground wire abnormality detection loop is all connected with signal output loop, the PE input end in ground wire abnormality detection loop connects the L input end of anti-measure loop respectively with zero live wire, N input end connects, signal output loop is connected with consumer controller.
2. interchange electrical zero live wire according to claim 1 connects anti-and ground wire abnormal detection circuit, it is characterized in that zero described live wire connects anti-measure loop and comprises the resistance R37, resistance R38, the diode D21 that are sequentially connected in series between L input end and N input end, the positive pole of diode D21 is connected with zero-power line, and the negative pole of diode D21 is connected with signal output loop.
3. interchange electrical zero live wire according to claim 2 connects anti-and ground wire abnormal detection circuit, it is characterized in that described signal output loop comprises resistance R40, photoelectrical coupler U8, resistance R41, resistance R42, electric capacity C30, the negative pole of positive pole the 1st pin contact resistance R40 to diode D21 of the light emitting source of photoelectrical coupler U8, negative pole the 2nd pin of the light emitting source of photoelectrical coupler U8 connects the zero line of power supply, the 3rd pin ground connection of photoelectrical coupler U8, the 4th pin contact resistance R41 to+5V of photoelectrical coupler U8, 4th pin of photoelectrical coupler U8 outputs signal by connecting electric capacity C30 and series resistor R42.
4. interchange electrical zero live wire according to claim 3 connects anti-and ground wire abnormal detection circuit, it is characterized in that described ground wire abnormality detection loop comprises electric capacity C27, electric capacity C28, electric capacity C29, resistance R34, resistance R35, resistance R36, diode D20, NPN type triode Q5, NPN type triode Q6, resistance R39, PE input end one end is connected with ground wire, and the other end connects electric capacity C27, electric capacity C29, electric capacity C28, electric capacity C27, the other end of electric capacity C29 connects L input end and N input end respectively, the other end contact resistance R34 of electric capacity C28, resistance R34 other end contact resistance R35 successively, resistance R36 is to the zero line of power supply, diode D20 is in parallel with resistance R36, the negative pole of diode D20 is connected to the ground level of NPN type triode Q5, the emitting stage E of NPN type triode Q5 is connected to the zero line of power supply, the current collection level of NPN type triode Q5 is connected to the ground level of NPN type triode Q6 and one end of resistance R39 simultaneously, the other end of resistance R39 is connected to the current collection level C of NPN type triode Q6, the current collection level C of NPN type triode Q6 is connected to the negative pole of diode D21, and the emitting stage of NPN type triode Q6 is connected to the zero line of power supply.
5. interchange electrical zero live wire according to claim 4 connects anti-and ground wire abnormal detection circuit, it is characterized in that described ground wire abnormality detection loop also comprises the Zener diode D19 be serially connected between resistance R34 and resistance R35, the negative pole of Zener diode D19 is connected with resistance R34, and the positive pole of Zener diode D19 is connected with resistance R35.
6. interchange electrical zero live wire according to claim 4 connects anti-and ground wire abnormal detection circuit, it is characterized in that described electric capacity C27, electric capacity C29, electric capacity C28 are safety Y capacitance.
7. interchange electrical zero live wire according to claim 2 connects anti-and ground wire abnormal detection circuit, it is characterized in that described resistance R37, resistance R38 is carbon resister.
8. interchange electrical zero live wire according to claim 4 connects anti-and ground wire abnormal detection circuit, it is characterized in that described diode D20, the model of diode D21 is 1N4004 or 1N4007.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520462128.XU CN204758745U (en) | 2015-06-27 | 2015-06-27 | It connects instead and unusual detection circuitry of ground wire to exchange electrical zero live wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520462128.XU CN204758745U (en) | 2015-06-27 | 2015-06-27 | It connects instead and unusual detection circuitry of ground wire to exchange electrical zero live wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204758745U true CN204758745U (en) | 2015-11-11 |
Family
ID=54473440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520462128.XU Withdrawn - After Issue CN204758745U (en) | 2015-06-27 | 2015-06-27 | It connects instead and unusual detection circuitry of ground wire to exchange electrical zero live wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204758745U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898015A (en) * | 2015-06-27 | 2015-09-09 | 佛山市顺德万和电气配件有限公司 | Alternating-current null-line and firing-line reverse connection and ground line abnormality detection circuit |
| CN114459137A (en) * | 2022-01-11 | 2022-05-10 | 珠海格力电器股份有限公司 | Zero-line and fire-line conditioning device of air conditioner, control method of zero-line and fire-line conditioning device and air conditioner |
-
2015
- 2015-06-27 CN CN201520462128.XU patent/CN204758745U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898015A (en) * | 2015-06-27 | 2015-09-09 | 佛山市顺德万和电气配件有限公司 | Alternating-current null-line and firing-line reverse connection and ground line abnormality detection circuit |
| CN114459137A (en) * | 2022-01-11 | 2022-05-10 | 珠海格力电器股份有限公司 | Zero-line and fire-line conditioning device of air conditioner, control method of zero-line and fire-line conditioning device and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104898015A (en) | Alternating-current null-line and firing-line reverse connection and ground line abnormality detection circuit | |
| CN202676816U (en) | Photoelectric coupling device, photoelectric isolation detection circuit and notification circuit | |
| CN201697990U (en) | Detecting circuit for power transmission and failure states of electric energy meter | |
| CN204758745U (en) | It connects instead and unusual detection circuitry of ground wire to exchange electrical zero live wire | |
| CN204439824U (en) | A kind of electric energy meter electric source abnormal detection circuit | |
| CN104635194B (en) | Three-phase metering loop online fault monitoring timing device | |
| CN205121826U (en) | Electron detection alarm circuit arrangement | |
| CN107632198A (en) | A kind of dual power supply electric quantity collector and its application method | |
| CN204989434U (en) | LED lamp and LED power detecting and display device | |
| CN204720702U (en) | A kind of voltage fluctuation protection alarm socket | |
| CN203455453U (en) | Oil pressure relay detection testing device | |
| CN103116075B (en) | Intelligent phase-checking device for P-type power distribution station | |
| CN202383228U (en) | Intelligent combiner box testing system | |
| CN203658518U (en) | Intelligent cell polarity reversal connection resistance alarm device | |
| CN203535153U (en) | PE detection device | |
| CN207588428U (en) | A kind of power-off automatic protection circuit | |
| CN108418284B (en) | Working power supply circuit | |
| CN108631394B (en) | Internal resistance detection sensor | |
| CN202903859U (en) | AC current detection alarm circuit | |
| CN201215579Y (en) | Weft detecting electric cable detection device of Picanol OMNI-800 weaving machine | |
| CN110702962A (en) | Universal meter pen of digital multimeter with anti-error measurement function | |
| CN203181322U (en) | Intelligent self-check device for LED lamps | |
| CN207037039U (en) | A kind of accumulator internal resistance Online Transaction Processing | |
| CN205229337U (en) | High -tension apparatus trouble early warning device | |
| CN205080243U (en) | 400 series seismic data collection system power low -voltage warning protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170418 Address after: 528325 Guangdong Province, Foshan city Shunde District Xingtan town De Fu Road No. 71 Patentee after: Guangdong Vanward heat energy technology Co., Ltd. Address before: 528305 Foshan, Shunde District, Ronggui street, Hongqi Road, No. 80 Patentee before: Foshan Shunde Wanhe Electrical Fittings Co., Ltd. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151111 Effective date of abandoning: 20171121 |