CN216959838U - Micro-power-consumption power-down sampling circuit of electronic switch with single-live-wire relay structure - Google Patents
Micro-power-consumption power-down sampling circuit of electronic switch with single-live-wire relay structure Download PDFInfo
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- CN216959838U CN216959838U CN202220565841.7U CN202220565841U CN216959838U CN 216959838 U CN216959838 U CN 216959838U CN 202220565841 U CN202220565841 U CN 202220565841U CN 216959838 U CN216959838 U CN 216959838U
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Abstract
The utility model discloses a micro-power-consumption power-down sampling circuit of an electronic switch with a single-live-wire relay structure, relates to the electronic technology, and solves the technical problems of high cost and high power consumption of the existing power-down acquisition mode. The circuit comprises a rectifier bridge D1, a resistor R1 and a photoelectric coupler U1; one input end of the rectifier bridge D1 is connected with the live wire input end of the relay, the other input end of the rectifier bridge D1 is grounded, the positive output end of the rectifier bridge D1 is connected with the light source input end of the photoelectric coupler U1 through a resistor R1, and the light source output end of the photoelectric coupler U1 is connected with the negative output end of the rectifier bridge D1; the input end of a light receiver of the photoelectric coupler U1 is connected with a direct-current power supply, the output end of the light receiver of the photoelectric coupler U1 is used as a sampling signal output end, and the sampling signal output end is connected with the positive output end of the off-state rectification structure through a resistor RA. The utility model has the characteristics of micro power consumption, simple circuit structure, strong universality and wide application range.
Description
Technical Field
The utility model relates to the electronic technology, in particular to a micro-power-consumption power-down sampling circuit of an electronic switch with a single-live-wire relay structure.
Background
In modern daily life of people, the requirement on intellectualization of household appliances is higher and higher, the intelligent household appliance is preferably used for controlling various appliances in hotel rooms, and the aspects of electronization, intellectualization, networking, remote control and the like of the appliances in the rooms are the main trend of future development in order to achieve the purposes of home experience and energy conservation of customers. A plurality of intelligent electronic switches controlled by single live wires in networking mode such as radio frequency, Bluetooth and ZIGBEE are appeared in the market at present. The control structure of the switch is mainly divided into two major categories, namely, a silicon controlled rectifier control category and a relay control category. The relay control is divided into a common relay and a magnetic latching relay.
For relay control type switches, it is actually a single live wire type of intelligent switch. In order to realize linkage between the switch and other electrical appliances (such as an electric curtain, an air conditioner, a television and the like) when power failure caused by closing a switch or external power supply power failure occurs, the live wire input end of the relay is required to be sampled. The current single-live-wire type intelligent switch power-down sampling circuit mostly samples the live-wire end circuit of the relay through a circuit structure based on a single chip microcomputer.
When the power supply of the intelligent switch is normal, a sampling signal is output to the control circuit based on the circuit structure of the single chip microcomputer, and the control circuit does not link other electrical appliances. When the intelligent switch is powered normally, the use state of the intelligent switch has two states of an on state and an off state. When the intelligence switch is in the on-state, relay live wire input and live wire intercommunication in the intelligence switch, the circuit structure based on the singlechip that is connected with relay live wire input this moment gets electric work. When the intelligent switch is in an off state, the off-state rectifying structure supplies power to the circuit structure based on the single chip microcomputer, and the output of a sampling signal is ensured.
When the intelligent switch is powered off, the circuit structure based on the single chip microcomputer is powered off, and no sampling signal is sent out. At the moment, the control circuit works through a built-in battery of the control circuit, and the control circuit sends out a linkage signal after receiving no corresponding sampling signal so as to realize linkage action on other electrical appliances.
However, the sampling mode through the single chip microcomputer is high in cost, and the circuit structure needs more components, so that power consumption is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a micro-power-consumption power-down sampling circuit of an electronic switch with a single-live-wire relay structure, aiming at overcoming the defects of the prior art, and solving the problems of high cost and high power consumption of the conventional power-down acquisition mode.
The utility model relates to a micro-power consumption power-down sampling circuit of an electronic switch of a single-live-wire relay structure, which comprises a rectifier bridge D1, a resistor R1 and a photoelectric coupler U1; one input end of the rectifier bridge D1 is connected with the live wire input end of the relay, the other input end of the rectifier bridge D1 is grounded, the positive output end of the rectifier bridge D1 is connected with the light source input end of the photoelectric coupler U1 through a resistor R1, and the light source output end of the photoelectric coupler U1 is connected with the negative output end of the rectifier bridge D1; the input end of a light receiver of the photoelectric coupler U1 is connected with a direct-current power supply, the output end of the light receiver of the photoelectric coupler U1 serves as a sampling signal output end, and the sampling signal output end is connected with the positive output end of the off-state rectifying structure through a resistor RA.
And a filter capacitor C1 is connected between the two ends of the luminous source of the photoelectric coupler U1.
The sampling signal output end is grounded through a resistor RB.
The resistor RB is connected with a filter capacitor CA in parallel.
Advantageous effects
The utility model has the advantages that: through the setting of rectifier bridge and optoelectronic coupler, realized the signal of telecommunication collection to single live wire in the intelligence switch, its simple structure is ingenious, need not to adopt the singlechip to sample, great reduction the circuit cost, but also avoided adopting too much components and parts to lead to the problem of consumption increase. In addition, the photoelectric coupler is used for electrically isolating the alternating current at the relay end and the direct current at the off-state rectifying structure end, so that the influence of an alternating current part on a direct current part in the sampling circuit is effectively avoided, and the sampling circuit can work more stably and reliably.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
The utility model is further described below with reference to examples, but not to be construed as being limited thereto, and any number of modifications which can be made by anyone within the scope of the claims are also within the scope of the claims.
Referring to fig. 1, the micro-power consumption power-down sampling circuit of the electronic switch with the single-live-wire relay structure comprises a rectifier bridge D1, a resistor R1 and a photoelectric coupler U1. An input end of the rectifier bridge D1 is connected with the live wire input end of the relay, the other input end of the rectifier bridge D1 is grounded, the positive output end of the rectifier bridge D1 is connected with the light source input end of the photoelectric coupler U1 through the resistor R1, and the light source output end of the photoelectric coupler U1 is connected with the negative output end of the rectifier bridge D1. The input end of a light receiver of the photoelectric coupler U1 is connected with a direct-current power supply, the output end of the light receiver of the photoelectric coupler U1 is used as a sampling signal output end, and the sampling signal output end is connected with the positive output end of the off-state rectifying structure through a resistor RA.
Rectification through rectifier bridge D1, resistance R1 after stepping down the signal of telecommunication of gathering from the relay live wire, enable the effectual light emitting source that acts on optoelectronic coupler U1 of signal of telecommunication, make its normal luminous to make the photic ware switch on, regard as the sampling signal with the signal of telecommunication input of gathering from the relay live wire, thereby realized the sample to single live wire in the intelligent switch. Because the rectifier bridge D1 and the required power of optoelectronic coupler U1 are very little in the course of the work, and can play the effect of electrical isolation, therefore the whole consumption of the sampling circuit of this embodiment will be great and less than the mode that the resistance is connected in series and steps down, have realized the micro-power consumption and sampled.
Preferably, a filter capacitor C1 is connected between two ends of the light source of the photocoupler U1 to avoid the influence of high-frequency noise in the alternating current on the photocoupler U1.
The sampling signal output end is grounded through a resistor RB to avoid the problem that the control circuit is influenced by overhigh voltage of an output signal of the sampling signal output end.
Preferably, a filter capacitor CA is connected in parallel to the resistor RB to stabilize the sampled signal.
The working principle of the utility model is as follows: when the intelligent switch is normally used and is in an on state, the sampling circuit rectifies alternating current in a single live wire through the rectifier bridge D1 and then transmits the rectified alternating current to the photoelectric coupler U1, and a sampling signal is obtained after conversion of the photoelectric coupler U1. When the intelligent switch is in an off state, an output signal of the off-state rectifying structure is reduced through the resistor RA and then serves as a sampling signal. The sampling signal is output to the control circuit, and the control circuit does not link other electrical appliances under the condition of receiving the electric signal. When the intelligent switch is in the back of falling the electricity, relay live wire input and off-state rectification structure are the output, and sampling circuit can not gather any signal of telecommunication, and its sampling signal output will no longer export sampling signal, and control circuit this moment can not receive the signal of telecommunication of sampling circuit feedback, will carry out the combined action to other electrical apparatus.
The above is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that several variations and modifications can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (4)
1. A micro-power consumption power-down sampling circuit of an electronic switch with a single-live-wire relay structure is characterized by comprising a rectifier bridge D1, a resistor R1 and a photoelectric coupler U1; one input end of the rectifier bridge D1 is connected with the live wire input end of the relay, the other input end of the rectifier bridge D1 is grounded, the positive output end of the rectifier bridge D1 is connected with the light source input end of the photoelectric coupler U1 through a resistor R1, and the light source output end of the photoelectric coupler U1 is connected with the negative output end of the rectifier bridge D1; the input end of a light receiver of the photoelectric coupler U1 is connected with a direct-current power supply, the output end of the light receiver of the photoelectric coupler U1 serves as a sampling signal output end, and the sampling signal output end is connected with the positive output end of the off-state rectifying structure through a resistor RA.
2. The micro-power-consumption power-down sampling circuit of the electronic switch with the single-live-wire relay structure as claimed in claim 1, wherein a filter capacitor C1 is connected between two ends of a light source of the optoelectronic coupler U1.
3. The single live wire relay structure electronic switch micro-power consumption power-down sampling circuit as claimed in claim 1, wherein the sampling signal output terminal is grounded through a resistor RB.
4. The single live wire relay structure electronic switch micro-power consumption power-down sampling circuit as claimed in claim 3, wherein a filter capacitor CA is connected in parallel to the resistor RB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220565841.7U CN216959838U (en) | 2022-03-15 | 2022-03-15 | Micro-power-consumption power-down sampling circuit of electronic switch with single-live-wire relay structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220565841.7U CN216959838U (en) | 2022-03-15 | 2022-03-15 | Micro-power-consumption power-down sampling circuit of electronic switch with single-live-wire relay structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216959838U true CN216959838U (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220565841.7U Active CN216959838U (en) | 2022-03-15 | 2022-03-15 | Micro-power-consumption power-down sampling circuit of electronic switch with single-live-wire relay structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216959838U (en) |
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2022
- 2022-03-15 CN CN202220565841.7U patent/CN216959838U/en active Active
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