CN203326551U - Magnetic latching non-stick over-voltage and under-voltage protector - Google Patents
Magnetic latching non-stick over-voltage and under-voltage protector Download PDFInfo
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- CN203326551U CN203326551U CN2013200333015U CN201320033301U CN203326551U CN 203326551 U CN203326551 U CN 203326551U CN 2013200333015 U CN2013200333015 U CN 2013200333015U CN 201320033301 U CN201320033301 U CN 201320033301U CN 203326551 U CN203326551 U CN 203326551U
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Abstract
The utility model discloses a magnetic latching non-stick over-voltage and under-voltage protector for a dwelling house low voltage power supply system. According to the magnetic latching non-stick over-voltage and under-voltage protector, a control circuit comprises a surge protection circuit, a double-voltage power source circuit, a line voltage sampling circuit, a reference voltage circuit, a single-chip computer circuit, a work state indication circuit, a double-coil driving circuit and an output state feedback circuit, wherein comparison on a sampling voltage is carried out by a single-chip computer, output control is carried out according to a comparison result, a feedback signal is fed back to the single-chip computer according to a control output result, determination is carried out by the single-chip computer according to the feedback result, second-time driving control is carried out, or output control driving is successive, work state indication is outputted to realize a closed loop control circuit of output and control; a double-coil magnetic latching relay is employed, almost no electricity is consumed during normal work, a scheme above is the effective solution scheme of a zero consumption product, a problem that a single-coil magnetic latching relay only employs bridge-type driving is solved, a motion voltage value and time-delay time have high precision, no adjustment is needed, production processing is easy, cost is low, consumption loss is low, energy saving and environmental protection are realized, safety and reliability of products are improved, and safety and reliability are guaranteed for power supply.
Description
Technical field:
The utility model relates to a kind of line voltage protective device, belongs to the low voltage electrical apparatus technology field.
Background technology:
Along with the develop rapidly of national economy, residential electricity consumption is more and more, but, in power supply, often some accident of power supplys can occur, and causes that line voltage is too high or too low, causes various electrical equipment to damage because of overvoltage/undervoltage.Overvoltage-undervoltage protector has following three kinds of forms in the market: a kind of is to increase the overvoltage/undervoltage shunt release on circuit breaker foundation; such protector can be protected when overvoltage/undervoltage occurs; deenergization, but voltage recover normal after, can not runback; need user's closing by hand; use inconvenience, when the user stays out, can not power in time; cause the interior food of refrigerator in user family to occur to go bad, affected user's electricity consumption.Two kinds is to adopt the overvoltage-undervoltage protector that common relay is the master control device, and it is less that common relay exists rated current, and relay coil needs long-term energising, and power consumption is large, not energy-conserving and environment-protective, poor reliability.Three kinds is to adopt the overvoltage-undervoltage protector that monocoil magnetic latching relay is the master control device, although the magnetic latching relay rated operational current is larger, coil does not need long-term energising, and power consumption is little, energy-conserving and environment-protective, but owing to being that what to adopt is unicoil, need to adopt four triodes to form bridge drive circuit, could drive the magnetic protection relay, due to the existence of the continuous electric current of coil and back-emf, very easily cause bridge-type to drive triode to damage, performance is unreliable; Magnetic protection relay when work is instantaneously to coil electricity, due to the existence of sporadic fault, very easily to cause the translation function of magnetic latching relay unreliable, loses protective effect.
Content while sending out:
The purpose of this utility model is exactly the above-mentioned shortcoming that pin product in the market exists, and a kind of magnetic provided keeps Self-recover overvoltage-undervoltage protector.
The purpose of this utility model realizes by following structure: surge protecting circuit 1, double-voltage electric power circuit 2, line voltage distribution sample circuit 3, reference voltage circuit 4, single chip circuit 5, working state indicating circuit 6, twin coil drive circuit 7, output state feedback circuit 8 totally eight parts form.City's voltage, after surge protecting circuit (1) monitoring and protection, through double-voltage electric power circuit (2), produces two voltages, and a voltage provides operating voltage for twin coil magnetic protection relay, and a voltage provides working power for each electronic circuit; Line voltage distribution sample circuit (3) provides power network line voltage comparison value for single chip circuit (5), reference voltage circuit (4) provides two benchmark comparing voltage value for monolithic, the voltage that supplies single-chip microcomputer and sample circuit (3) to provide compares, a reference voltage is as the overvoltage comparison value, a base voltage is as the under voltage comparison value, according to comparative result, single chip circuit (5) is exported to twin coil drive circuit (7) and is driven the action of twin coil magnetic protection relay; Output state feedback circuit (8) feeds back to single chip circuit (5) according to the output state of twin coil magnetic protection relay; single-chip microcomputer is made according to feedback states; driving or output services state are to working state indicating circuit (6) again, and the output services state is indicated.
Main feature of the present utility model is, single-chip microcomputer compares sampled voltage, export control according to comparative result, feed back to single-chip microcomputer according to controlling Output rusults again, monolithic is judged according to the result of feedback, whether successfully controls driving, makes again and drives and control, or the successful output services shape indication of output control driving, realized the closed control circuit of output with control.The operation voltage value, the delay time precision is high, adjustment-free, easily production and processing, cost is low, and low in energy consumption, energy-conserving and environment-protective have improved the safety and reliability of product.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of realizing of the present utility model.
Wherein 1 is surge protecting circuit, the 2nd, and double-voltage electric power circuit, the 3rd, line voltage distribution sample circuit, the 4th, reference voltage circuit, the 5th, single chip circuit, the 6th, working state indicating circuit, 7 twin coil drive circuits, the 8th, output state feedback circuit.
Embodiment
This magnetic maintenance Self-recover overvoltage-undervoltage protector, the employing single-chip microcomputer detects, compares, controls, feeds back, indicates, and twin coil magnetic protection relay is control element; Surge protecting circuit, double-voltage electric power circuit, line voltage distribution sample circuit, reference voltage circuit, single chip circuit, working state indicating circuit, twin coil drive circuit, output state feedback circuit totally eight parts form; At first power supply enters and monitors through surge protecting circuit, guarantees the safety of circuit voltage, by the double-voltage electric power circuit, for each circuit provides working power.The power circuit that is input as the surge protecting circuit monitoring of sample circuit, for line voltage, for single-chip microcomputer provides the sampling comparative voltage, provide the benchmark comparative voltage by reference voltage circuit for single-chip microcomputer, export control signal to the twin coil drive circuit by single-chip microcomputer again, by the twin coil drive circuit, drive corresponding closing coil or disconnect coil; To feed back signal to single-chip microcomputer by feedback circuit, be judged according to feedback signal by single-chip microcomputer, the indication of output services state.
Surge protecting circuit 1 is comprised of the cloudy R28 of pressure-sensitive electricity.
Double-voltage electric power circuit 2 is by capacitor C 10, C13, C12, resistance R 24, R21, R23, R29, and rectifier bridge D7, chip IC 1 form.
Line voltage distribution sample circuit 3 is by diode D5 resistance R 20, R27, and capacitor C 11 forms.
Reference voltage circuit 4 is comprised of resistance R 22, R25, R31.
Working state indicating circuit 6 is by resistance R 30, R25, and the common cathode diode (LED) forms.
Twin coil drive circuit 7 is by triode Q4, Q5, and twin coil magnetic latching relay K2 forms.
Output state feedback circuit 8 is by resistance R 33, R32, optocoupler U1, and diode D8 forms.
Claims (4)
1. a magnetic keeps Self-recover overvoltage-undervoltage protector, it is characterized in that this magnetic keeps Self-recover overvoltage-undervoltage protector to adopt single-chip microcomputer to detect, relatively, control, feedback, indicating status, the twin coil magnetic latching relay is as control element, and its control circuit is by surge protecting circuit (1), double-voltage electric power circuit (2), line voltage distribution sample circuit (3), reference voltage circuit (4), single chip circuit (5), working state indicating circuit (6), twin coil drive circuit (7), output state feedback circuit (8) forms, it is trouble free service voltage that electric power incoming line be take surge protecting circuit monitoring line voltage, be defeated by double-voltage electric power circuit and line voltage distribution sample circuit, provide working power by the double-voltage electric power circuit for each circuit, adopt the value of circuit (3) according to line voltage distribution and the fiducial value of reference voltage circuit (4) compares by single chip circuit, twin coil drive circuit (7) is exported in judgement, output state feedback circuit (8) feeds back to single chip circuit (5) by feedback signal, and working state indicating circuit (6) is exported in single chip circuit (5) judgement.
2. magnetic according to claim 1 keeps Self-recover overvoltage-undervoltage protector; it is characterized in that two-supply circuit (2) is by capacitor C 10, C13, C12; resistance R 24, R21, R23, R29; rectifier bridge D7, chip IC 1 form; capacitor C 13, C12 in two-supply circuit (2); the resistance R 21 flow point hematocrit sub-resistance that is limited; chip IC 1 forms voltage stabilizing circuit with resistance R 23, R29; can be by resistance R 21; be transformed to voltage stabilizing didoe, integrated regulator, or chip IC 1 is transformed to voltage stabilizing didoe, integrated regulator.
3. magnetic according to claim 1 keeps Self-recover overvoltage-undervoltage protector, it is characterized in that in twin coil drive circuit (7), triode Q4, Q5 are the switch control element, and twin coil magnetic protection relay K2 is for carrying out control element.
4. magnetic according to claim 1 keeps Self-recover overvoltage-undervoltage protector, it is characterized in that output state feedback circuit (8) is by resistance R 33, R32, optocoupler U1, and diode D8 forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200333015U CN203326551U (en) | 2013-01-23 | 2013-01-23 | Magnetic latching non-stick over-voltage and under-voltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200333015U CN203326551U (en) | 2013-01-23 | 2013-01-23 | Magnetic latching non-stick over-voltage and under-voltage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203326551U true CN203326551U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200333015U Expired - Fee Related CN203326551U (en) | 2013-01-23 | 2013-01-23 | Magnetic latching non-stick over-voltage and under-voltage protector |
Country Status (1)
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| CN (1) | CN203326551U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762549A (en) * | 2013-12-31 | 2014-04-30 | 安徽鑫龙电器股份有限公司 | Self-reset overvoltage and undervoltage protector |
| CN103779831A (en) * | 2014-02-10 | 2014-05-07 | 杨新宇 | Self-recovery over-voltage and under-voltage protection device based on single-chip microcomputer |
| CN105977908A (en) * | 2016-06-21 | 2016-09-28 | 中国电子科技集团公司第三十八研究所 | Automatic recovery DC overvoltage protection circuit of unmanned aerial vehicle |
-
2013
- 2013-01-23 CN CN2013200333015U patent/CN203326551U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762549A (en) * | 2013-12-31 | 2014-04-30 | 安徽鑫龙电器股份有限公司 | Self-reset overvoltage and undervoltage protector |
| CN103779831A (en) * | 2014-02-10 | 2014-05-07 | 杨新宇 | Self-recovery over-voltage and under-voltage protection device based on single-chip microcomputer |
| CN103779831B (en) * | 2014-02-10 | 2016-11-23 | 西安阿普顿电力技术有限公司 | SCM Based three-phase self-resetting type over voltage protector |
| CN105977908A (en) * | 2016-06-21 | 2016-09-28 | 中国电子科技集团公司第三十八研究所 | Automatic recovery DC overvoltage protection circuit of unmanned aerial vehicle |
| CN105977908B (en) * | 2016-06-21 | 2018-06-05 | 中国电子科技集团公司第三十八研究所 | Unmanned plane can recover DC over-voltage protection circuit automatically |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| EXPY | Termination of patent right or utility model |