CN201867443U - Home appliance and mains supply strong current signal detection circuit thereof - Google Patents
Home appliance and mains supply strong current signal detection circuit thereof Download PDFInfo
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- CN201867443U CN201867443U CN2010205706969U CN201020570696U CN201867443U CN 201867443 U CN201867443 U CN 201867443U CN 2010205706969 U CN2010205706969 U CN 2010205706969U CN 201020570696 U CN201020570696 U CN 201020570696U CN 201867443 U CN201867443 U CN 201867443U
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Abstract
The utility model discloses a home appliance and a mains supply strong current signal detection circuit thereof. The circuit comprises a voltage-reducing unit, an isolation unit and an amplification unit, wherein the voltage-reducing unit can reduce the high voltage of alternating current to the low voltage; the isolation unit is connected with the voltage-reducing unit and used for isolating strong current signals; and the amplification unit is connected with the isolation unit and used for amplifying the current output by the isolation unit. By implementing the technical scheme, the voltage is reduced through conducting 50Hz mains supply by the voltage-reducing unit, the current output by the isolation unit is amplified by the amplification unit, and the signals output by the amplification unit are sent to a single chip microcomputer interface. The mains supply strong current signal detection circuit has low power consumption and simple design.
Description
Technical field
The utility model relates to civil power forceful electric power input field, relates in particular to a kind of household electrical appliance and civil power forceful electric power signal deteching circuit thereof.
Background technology
As shown in Figure 1, this civil power forceful electric power signal deteching circuit comprises resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, capacitor C 1, capacitor C 2, diode D1, photoelectrical coupler IC1 and triode Q1, should be noted that, the principle of work of photoelectrical coupler IC1 is that the light emitting diode of input end is lighted, the just conducting of the triode of output terminal.
Wherein, one end of resistance R 1 is connected with zero line, the other end of resistance R 1 is connected with the negative electrode of diode D1 and the anode of the light emitting diode of photoelectrical coupler IC1 respectively, diode D1 and photoelectrical coupler IC1 parallel connection, the negative electrode of the light emitting diode of photoelectrical coupler IC1 is connected with live wire respectively with the anode of diode D1, capacitor C 1 is in parallel with resistance R 2, one end of capacitor C 1 and an end of resistance R 2 are connected with the collector of the triode of photoelectrical coupler IC1 and an end of resistance R 4 respectively, the other end of capacitor C 1 is connected with 5V voltage respectively with the other end of resistance R 2, the base stage of triode Q1 is connected with the other end of resistance R 4, the collector of triode Q1 is connected with an end of resistance R 3 and an end of resistance R 5 respectively, the emitter of triode Q1 is connected with 5V voltage, the other end of resistance R 3 is connected with ground, the other end of resistance R 5 is connected with interface microcontroller with an end of capacitor C 2 respectively, and the other end of capacitor C 2 is connected with ground.
Foregoing circuit utilizes resistance R 1 to come step-down, and utilizes triode Q1 to come the amplified current signal, and those skilled in the art should understand, resistance R 1 and triode Q1 are the power consumption components and parts, in the use of reality, need to consume very big power, so this circuit and do not meet energy conservation standard.
The utility model content
The technical problems to be solved in the utility model is, do not meet the defective of energy conservation standard at the civil power forceful electric power signal deteching circuit of prior art, provides a kind of low-power consumption, the civil power forceful electric power signal deteching circuit of simplicity of design.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of civil power forceful electric power signal deteching circuit is provided, and described circuit comprises and is used for amplifying unit that the high pressure of alternating current is reduced to the pressure unit of low pressure, is connected and is used to isolate the isolated location of forceful electric power signal with described pressure unit and be connected and be used to amplify the electric current of described isolated location output with described isolated location.
In civil power forceful electric power signal deteching circuit described in the utility model, described pressure unit comprises resistance R 1 and capacitor C 2, wherein, one end of described resistance R 1 is connected with first power input of alternating current, the other end of described resistance R 1 is connected with an end of described capacitor C 2, and the other end of described capacitor C 2 is connected with described isolated location.
In civil power forceful electric power signal deteching circuit described in the utility model, described isolated location comprises stabilivolt DW1, photoelectrical coupler IC1 and resistance R 4, wherein, described stabilivolt DW1 is in parallel with described photoelectrical coupler IC1, the negative electrode of described stabilivolt DW1 is connected with the other end of capacitor C 2 respectively with the anode of the light emitting diode of described photoelectrical coupler IC1, the anode of described stabilivolt DW1 is connected with the second source input end of alternating current respectively with the negative electrode of the light emitting diode of described photoelectrical coupler IC1, the collector of the triode of described photoelectrical coupler IC1 is connected with described amplifying unit with an end of described resistance R 4 respectively, the emitter of the triode of described photoelectrical coupler IC1 is connected with ground, and the other end of described resistance R 4 is connected with 5V voltage.
In civil power forceful electric power signal deteching circuit described in the utility model, described amplifying unit comprises electric capacity R6, first not gate and second not gate, wherein, the end of described electric capacity R6 is connected with the collector of the triode of an end of described resistance R 4, described photoelectrical coupler IC1 and the input end of described first not gate respectively, the other end of described electric capacity R6 is connected with ground, the output terminal of described first not gate is connected with the input end of described second not gate, and the output terminal of described second not gate is connected with interface microcontroller.
In civil power forceful electric power signal deteching circuit described in the utility model, a kind of household electrical appliance that comprise described civil power forceful electric power signal deteching circuit are also provided.
In civil power forceful electric power signal deteching circuit described in the utility model, described household electrical appliance comprise dish-washing machine, washing machine and air-conditioning.
Implement the technical solution of the utility model, come the civil power of conducting 50Hz by pressure unit, and play the effect of step-down, and the electric current that amplifies isolated location output by amplifying unit, the signal of amplifying unit output is sent to interface microcontroller, has realized the civil power forceful electric power signal deteching circuit of a kind of low-power consumption, simplicity of design.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, and in the accompanying drawing: Fig. 1 is the circuit diagram of the utility model civil power forceful electric power signal deteching circuit prior art; Fig. 2 is the structural representation of the utility model civil power forceful electric power signal deteching circuit embodiment one; Fig. 3 is the circuit diagram of the utility model civil power forceful electric power signal deteching circuit embodiment two.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 2, in the structural representation of the utility model civil power forceful electric power signal deteching circuit embodiment one, this circuit comprises pressure unit 100, the isolated location 200 that is connected with pressure unit 100 and the amplifying unit 300 that is connected with isolated location 200, wherein, pressure unit 100 is used for the high pressure of alternating current is reduced to low pressure, should be noted that, this alternating current can be 110V to the voltage between the 230V, the voltage of this alternating current is to be connected between live wire and the zero line.
Isolated location 200 is used to isolate the forceful electric power signal, though should be noted that pressure unit 100 high pressure of alternating current is reduced to low pressure, for the sake of security, needs the forceful electric power signal in the circuit is isolated.
Amplifying unit 300 is used to amplify the electric current of isolated location 200 outputs, should be noted that the current ratio of isolated location 200 outputs is less, can't drive single-chip microcomputer work, thus need to amplify this electric current, so that it drives single-chip microcomputer work.
As shown in Figure 3, in the circuit diagram of the utility model civil power forceful electric power signal deteching circuit embodiment two, pressure unit 100 in the present embodiment, isolated location 200 and amplifying unit 300 and the pressure unit of implementing in one 100, isolated location 200 and amplifying unit 300 are identical, do not repeat them here, this civil power forceful electric power signal deteching circuit specifically comprises resistance R 1, resistance R 4, capacitor C 2, capacitor C 6, stabilivolt DW1, photoelectrical coupler IC1, first not gate (U1A) and second not gate (U1B), wherein, one end of resistance R 1 is connected with first power input (L) of alternating current, the other end of resistance R 1 is connected with an end of capacitor C 2, the other end of capacitor C 2 respectively with the negative electrode of stabilivolt DW1, the anode of the light emitting diode of photoelectrical coupler IC1 connects, stabilivolt DW1 is in parallel with photoelectrical coupler IC1, the negative electrode of the anode of stabilivolt DW1 and the light emitting diode of photoelectrical coupler IC1 is connected with the second source input end (N) of alternating current respectively, should be noted that, in the present embodiment, first power input of alternating current is a zero line, the second source input end of alternating current is a live wire, the utility model is not limited to this kind connection, can with first power input of alternating current live wire also, the second source input end of alternating current is a zero line, those skilled in the art should understand, do not repeat them here, one end of resistance R 4 respectively with the collector of the triode of photoelectrical coupler IC1, the input end (1) of one end of capacitor C 6 and first not gate (U1A) connects, the other end of resistance R 4 is connected with 5V voltage, the other end of capacitor C 6 is connected with ground, the output terminal (2) of first not gate (U1A) is connected with the input end (3) of second not gate (U1B), and the output terminal (4) of second not gate (U1B) is connected with interface microcontroller.
Should be noted that; in foregoing circuit; the resistance of resistance R 1 is 0; capacitor C 2 is as the decompression device of present embodiment; compared to existing technology as the decompression device resistance R 1 among Fig. 1; has characteristic low in energy consumption; in the present embodiment; the highest withstand voltage of capacitor C 2 is 630V; stabilivolt DW1 plays the effect of clamping down on voltage in the present embodiment; be used to protect photoelectrical coupler IC1; the parameter of this stabilivolt is adjustable; those skilled in the art should understand; do not repeat them here; the model that photoelectrical coupler IC1 adopts in the present embodiment is PC817; also can be the photoelectrical coupler of other models; capacitor C 6 has been the effect of filtering in the present embodiment; first not gate (U1A) and second not gate (U1B) model in the present embodiment are 4069; also can be the not gate of other models; the principle of work of foregoing circuit is: after these circuit process capacitor C 2 step-downs; when if the voltage after the step-down surpasses the rated voltage of stabilivolt DW1; then stabilivolt DW1 is breakdown; thereby protected photoelectrical coupler IC1, all right operate as normal of circuit is not when reaching the rated voltage of stabilivolt DW1 as if the voltage after the step-down; then not conducting of stabilivolt DW1; circuit, can't drive single-chip microcomputer and handle accordingly because of this electric current is very little through photoelectrical coupler IC1 output current; so; in the present embodiment, increased by two not gates and amplified this current signal, handled accordingly so that drive single-chip microcomputer.
Should be noted that, above-mentioned civil power forceful electric power signal deteching circuit can be used in a lot of household electrical appliances occasions, such as on the Based Intelligent Control plate of dish-washing machine, washing machine, air-conditioning or the like, above-mentioned detection civil power forceful electric power signal deteching circuit can be judged the whether power down of this circuit, if this circuit power down, then single-chip microcomputer can detect at once and obtain; Can also detect the load signal of some forceful electric power, such as electric motor, door lock or the like, if after detecting above-mentioned load signal, then single-chip microcomputer will be made corresponding processing, those skilled in the art should understand, and does not repeat them here.Because this civil power forceful electric power signal deteching circuit has characteristic low in energy consumption, so can be used on the household appliances of outlet European Union.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present utility model.
Claims (6)
1. civil power forceful electric power signal deteching circuit, it is characterized in that described circuit comprises and is used for amplifying unit that the high pressure of alternating current is reduced to the pressure unit of low pressure, is connected and is used to isolate the isolated location of forceful electric power signal with described pressure unit and be connected and be used to amplify the electric current of described isolated location output with described isolated location.
2. civil power forceful electric power signal deteching circuit according to claim 1, it is characterized in that, described pressure unit comprises resistance R 1 and capacitor C 2, wherein, one end of described resistance R 1 is connected with first power input of alternating current, the other end of described resistance R 1 is connected with an end of described capacitor C 2, and the other end of described capacitor C 2 is connected with described isolated location.
3. civil power forceful electric power signal deteching circuit according to claim 2, it is characterized in that, described isolated location comprises stabilivolt DW1, photoelectrical coupler IC1 and resistance R 4, wherein, described stabilivolt DW1 is in parallel with described photoelectrical coupler IC1, the negative electrode of described stabilivolt DW1 is connected with the other end of capacitor C 2 respectively with the anode of the light emitting diode of described photoelectrical coupler IC1, the anode of described stabilivolt DW1 is connected with the second source input end of alternating current respectively with the negative electrode of the light emitting diode of described photoelectrical coupler IC1, the collector of the triode of described photoelectrical coupler IC1 is connected with described amplifying unit with an end of described resistance R 4 respectively, the emitter of the triode of described photoelectrical coupler IC1 is connected with ground, and the other end of described resistance R 4 is connected with 5V voltage.
4. civil power forceful electric power signal deteching circuit according to claim 3, it is characterized in that, described amplifying unit comprises electric capacity R6, first not gate and second not gate, wherein, the end of described electric capacity R6 is connected with the collector of the triode of an end of described resistance R 4, described photoelectrical coupler IC1 and the input end of described first not gate respectively, the other end of described electric capacity R6 is connected with ground, the output terminal of described first not gate is connected with the input end of described second not gate, and the output terminal of described second not gate is connected with interface microcontroller.
5. household electrical appliance is characterized in that, comprise each described civil power forceful electric power signal deteching circuit of claim 1 to 4.
6. household electrical appliance according to claim 5 is characterized in that, described household electrical appliance are dish-washing machine, washing machine or air-conditioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205706969U CN201867443U (en) | 2010-10-21 | 2010-10-21 | Home appliance and mains supply strong current signal detection circuit thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205706969U CN201867443U (en) | 2010-10-21 | 2010-10-21 | Home appliance and mains supply strong current signal detection circuit thereof |
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| CN201867443U true CN201867443U (en) | 2011-06-15 |
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| CN2010205706969U Expired - Fee Related CN201867443U (en) | 2010-10-21 | 2010-10-21 | Home appliance and mains supply strong current signal detection circuit thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890205A (en) * | 2011-07-20 | 2013-01-23 | 珠海格力电器股份有限公司 | Data acquiring analyzing instrument for variable frequency air conditioner |
| CN103424598A (en) * | 2013-06-25 | 2013-12-04 | 深圳市英威腾电气股份有限公司 | Output voltage detection circuit for inverter system and inverter system |
| CN103645395A (en) * | 2013-11-15 | 2014-03-19 | 四川圣维信息技术有限公司 | Isolation and protection circuit for high-voltage live-line monitoring |
| CN106645903A (en) * | 2017-03-03 | 2017-05-10 | 福建星网视易信息系统有限公司 | Detection method and system for multi-channel alternating current strong current signal |
| CN106658805A (en) * | 2016-10-28 | 2017-05-10 | 广东美的厨房电器制造有限公司 | On-board microwave oven and control method of on-board microwave |
| CN114966187A (en) * | 2022-07-27 | 2022-08-30 | 华录易云科技有限公司 | Commercial power voltage monitoring circuit and method and application in traffic signal machine |
-
2010
- 2010-10-21 CN CN2010205706969U patent/CN201867443U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890205A (en) * | 2011-07-20 | 2013-01-23 | 珠海格力电器股份有限公司 | Data acquiring analyzing instrument for variable frequency air conditioner |
| CN102890205B (en) * | 2011-07-20 | 2015-05-13 | 珠海格力电器股份有限公司 | Data acquiring analyzing instrument for variable frequency air conditioner |
| CN103424598A (en) * | 2013-06-25 | 2013-12-04 | 深圳市英威腾电气股份有限公司 | Output voltage detection circuit for inverter system and inverter system |
| CN103424598B (en) * | 2013-06-25 | 2016-04-27 | 深圳市英威腾电气股份有限公司 | Inversion system output voltage detecting circuit and inversion system |
| CN103645395A (en) * | 2013-11-15 | 2014-03-19 | 四川圣维信息技术有限公司 | Isolation and protection circuit for high-voltage live-line monitoring |
| CN106658805A (en) * | 2016-10-28 | 2017-05-10 | 广东美的厨房电器制造有限公司 | On-board microwave oven and control method of on-board microwave |
| CN106645903A (en) * | 2017-03-03 | 2017-05-10 | 福建星网视易信息系统有限公司 | Detection method and system for multi-channel alternating current strong current signal |
| CN114966187A (en) * | 2022-07-27 | 2022-08-30 | 华录易云科技有限公司 | Commercial power voltage monitoring circuit and method and application in traffic signal machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20161021 |