CN113541460A - Power supply circuit, remote controller and system - Google Patents
Power supply circuit, remote controller and system Download PDFInfo
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- CN113541460A CN113541460A CN202110820371.4A CN202110820371A CN113541460A CN 113541460 A CN113541460 A CN 113541460A CN 202110820371 A CN202110820371 A CN 202110820371A CN 113541460 A CN113541460 A CN 113541460A
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- 238000001914 filtration Methods 0.000 claims abstract description 50
- 238000010521 absorption reaction Methods 0.000 claims abstract description 36
- 239000003990 capacitor Substances 0.000 claims description 35
- 230000006641 stabilisation Effects 0.000 claims description 27
- 238000011105 stabilization Methods 0.000 claims description 27
- 230000000087 stabilizing effect Effects 0.000 description 8
- 238000002955 isolation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
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- Engineering & Computer Science (AREA)
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Abstract
The application provides a power supply circuit, a remote controller and a system. The power supply circuit comprises a power supply module, a first power supply end and a second power supply end; the first voltage-stabilizing filtering module is provided with an input end and an output end, and the input end of the first voltage-stabilizing filtering module is electrically connected with the first power supply end of the power supply module; the high-power module is electrically connected with the output end of the first voltage-stabilizing filtering module; the interference absorption module is provided with an input end and an output end, the input end of the interference absorption module is electrically connected with the second power supply end of the power supply module, and the interference absorption module is used for absorbing interference generated by the high-power module; and the micro control module is electrically connected with the output end of the interference absorption module. After the interference generated by the high-power module passes through the first voltage-stabilizing filtering module and the power supply module, the interference is absorbed again by the interference absorption module, and the path of the power supply direction interference which is transmitted to the micro-control module through the power supply line is blocked, so that the micro-control module is not interfered by the high-power module.
Description
Technical Field
The present application relates to the field of electronic circuits, and in particular, to a power supply circuit, a remote controller, and a system.
Background
At present household appliances have highly popularized, for the use of convenient electrical apparatus, generally have supporting remote controller, and people pass through the remote control electrical apparatus of remote controller, have further promoted the electrical apparatus and have used and experienced. Most of remote controllers are powered by batteries and are limited by the output power of the batteries, the stability of a power supply (batteries) of the remote controllers can be influenced by a high-power module on the remote controllers, and particularly, when the high-power module runs, interference can be generated on a micro-control system, other functions of the remote controllers cannot be normally realized, so that the reliability of the remote controllers is reduced, and the phenomenon of insensitivity of remote control and even the resetting of the remote controllers occur.
The power supply circuit of the remote controller in the prior art is shown in fig. 1, a power supply is connected with a voltage stabilizing and filtering module, the voltage stabilizing and filtering module is connected with a high-power module and a micro-control system, and the high-power module often generates interference to the micro-control system during operation.
Disclosure of Invention
The main purpose of this application is to provide a supply circuit, remote controller and system to can produce the interference to micro control system when solving high-power module operation among the prior art, cause the unable problem of normally realizing of other functions of remote controller.
In order to achieve the above object, according to one aspect of the present application, there is provided a power supply circuit including: the power supply module is provided with a first power supply end and a second power supply end; the first voltage-stabilizing filtering module is provided with an input end and an output end, and the input end of the first voltage-stabilizing filtering module is electrically connected with the first power supply end of the power supply module; the high-power module is electrically connected with the output end of the first voltage-stabilizing filtering module; the interference absorption module is provided with an input end and an output end, the input end of the interference absorption module is electrically connected with the second power supply end of the power supply module, and the interference absorption module is used for absorbing interference generated by the high-power module; and the micro control module is electrically connected with the output end of the interference absorption module.
Further, the circuit further comprises: and the second voltage-stabilizing filtering module is connected in series between the interference absorption module and the micro control module.
Further, the interference absorption module comprises a first capacitor submodule and a first resistor submodule, the first capacitor submodule and the first resistor submodule are connected in parallel, the first capacitor submodule comprises at least one first capacitor, and the first resistor submodule comprises at least one first resistor.
Further, the interference absorption module is a second resistance submodule, and the second resistance submodule at least comprises a second resistor.
Further, the second resistance submodule satisfies the following condition: imax is less than or equal to Vhl, and Imax2 is less than or equal to WR, wherein Imax represents the maximum current output by the power supply module when the power supply circuit works, Rx represents the resistance value of the second resistance submodule, Vhl represents the high-low level tolerance of the micro control module, and WR represents the rated power output by the power supply module.
Further, the first voltage stabilizing and filtering module comprises a second capacitor submodule and a third capacitor submodule, the second capacitor submodule and the third capacitor submodule are connected in parallel, the second capacitor submodule comprises at least one second capacitor, and the third capacitor submodule comprises at least one third capacitor.
Furthermore, the number of the high-power modules is multiple, the micro-control module is in communication connection with each high-power module, and the micro-control module is further used for controlling the working time of each high-power module.
According to another aspect of the present application, there is provided a remote controller including any one of the power supply circuits.
According to yet another aspect of the present application, there is provided a system comprising: the remote controller; and the remote controller is used for remotely controlling the electric appliance.
Further, the appliance is one of: air conditioner, TV set, electric fan, air purifier. .
By applying the technical scheme, the micro control module and the high-power module are supplied with power in two paths, so that the power supply isolation of the micro control module and the high-power module is realized, and the interference generated by the high-power module is prevented from directly entering the micro control module to influence the normal work of the micro control module. The electric signal after being subjected to voltage stabilization filtering by the first voltage stabilization filtering module can meet the normal working requirement of the high-power module, the first voltage stabilization filtering module can preliminarily absorb the interference generated by the high-power module, the interference generated by the high-power module is absorbed again by the interference absorption module after passing through the first voltage stabilization filtering module and the power supply module, and the path of the power supply direction interference transmitted to the micro control module through the power supply line is blocked, so that the micro control module cannot be interfered by the high-power module. And a more stable and pure power supply is provided for the micro control module.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 shows a schematic diagram of a power supply circuit for a prior art remote control;
FIG. 2 shows a schematic diagram of a power supply circuit for a remote control according to an embodiment of the present application;
fig. 3 shows a schematic diagram of a power supply circuit of another remote control according to an embodiment of the application.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
As introduced in the background art, in the prior art, when the high-power module operates, interference may be generated on the micro control system, which may cause that other functions of the remote controller may not be normally implemented. The embodiment of the application provides a power supply circuit, a remote controller and a system.
In an exemplary embodiment of the present application, there is provided a power supply circuit, as shown in fig. 2, including:
the power supply module is provided with a first power supply end and a second power supply end;
the first voltage-stabilizing filtering module is provided with an input end and an output end, and the input end of the first voltage-stabilizing filtering module is electrically connected with the first power supply end of the power supply module;
the high-power module is electrically connected with the output end of the first voltage-stabilizing filtering module;
the interference absorption module is provided with an input end and an output end, the input end of the interference absorption module is electrically connected with the second power supply end of the power supply module, and the interference absorption module is used for absorbing interference generated by the high-power module;
and the micro control module is electrically connected with the output end of the interference absorption module.
Specifically, in the remote controller, the power supply module generally adopts a battery to supply power, that is, the power supply voltage of the power supply module is relatively low.
In the scheme, the micro control module and the high-power module are supplied with power in two paths, so that the power supply isolation of the micro control module and the high-power module is realized, and the interference generated by the high-power module is prevented from directly entering the micro control module to influence the normal work of the micro control module. The electric signal after being subjected to voltage stabilization filtering by the first voltage stabilization filtering module can meet the normal working requirement of the high-power module, the first voltage stabilization filtering module can preliminarily absorb the interference generated by the high-power module, the interference generated by the high-power module is absorbed again by the interference absorption module after passing through the first voltage stabilization filtering module and the power supply module, and the path of the power supply direction interference transmitted to the micro control module through the power supply line is blocked, so that the micro control module cannot be interfered by the high-power module. And a more stable and pure power supply is provided for the micro control module.
In an alternative embodiment, the mains supply is used for supplying power to the control equipment (including the remote controller) after rectification, filtering and voltage reduction, although the power supply to the remote controller can also be realized, the rectification, filtering and voltage reduction circuit is high in cost, and the control equipment is inconvenient to use due to the fact that the control equipment is provided with a connecting wire.
In an embodiment of the present application, as shown in fig. 3, the circuit further includes a second voltage stabilizing and filtering module, and the second voltage stabilizing and filtering module is connected in series between the interference absorbing module and the micro control module. After the interference is absorbed by the interference absorption module, the electric signal obtained after the voltage stabilization filtering is carried out by the second voltage stabilization filtering module can meet the working requirement of the micro control module.
In an embodiment of the present application, the interference absorption module includes a first capacitor submodule and a first resistor submodule, the first capacitor submodule and the first resistor submodule are connected in parallel, the first capacitor submodule includes at least one first capacitor, and the first resistor submodule includes at least one first resistor. Preferably, the RC absorption scheme is adopted, so that the parameters need to meet the following requirements: r is less than or equal to 10 omega, and C is less than or equal to 100 Pf. R is the resistance value of the first resistance submodule, and C is the capacitance value of the first capacitance submodule.
In an embodiment of the present application, the interference absorption module is a second resistor submodule, and the second resistor submodule includes at least one second resistor.
In an embodiment of the present application, the second resistance submodule satisfies the following condition: and Imax is less than or equal to Vhl and Imax2 is less than or equal to WR, wherein Imax represents the maximum current output by the power supply module when the power supply circuit works, Rx represents the resistance value of the second resistance submodule, Vhl represents the high-low level tolerance of the micro control module, and WR represents the rated power output by the power supply module. Under the condition that the second resistance submodule meets the conditions that Imax multiplied by Rx is less than or equal to Vhl and Imax2 multiplied by Rx is less than or equal to WR, better absorption to interference can be realized, and the stability of the micro control module is ensured.
More preferably, Imax is less than or equal to 70% Vhl, Imax2 is less than or equal to 50% WR, and sufficient margin is reserved to ensure the reliable and normal operation of the equipment.
In an embodiment of the application, the first voltage stabilizing and filtering module includes a second capacitor sub-module and a third capacitor sub-module, the second capacitor sub-module is connected in parallel with the third capacitor sub-module, the second capacitor sub-module includes at least one second capacitor, and the third capacitor sub-module includes at least one third capacitor.
Preferably, the capacitance of the second capacitive sub-module is greater than or equal to 200 μ F, the equivalent resistance of the second capacitive sub-module is less than or equal to 1 Ω, and the capacitance of the third capacitive sub-module is less than or equal to 0.1 μ F. The capacitance values of the second capacitor sub-module and the third capacitor sub-module are preferably matched in a large-to-small mode so as to cover a wider frequency range.
Specifically, the withstand voltage of the capacitors of the second capacitor sub-module and the third capacitor sub-module is Vc, and the maximum voltage of the power supply is Vmax, so that the condition that Vc is more than or equal to Vmax is required, and more preferably, Vc 80% is more than or equal to Vmax is satisfied.
Specifically, the second voltage stabilizing filter module may select the same structure as the first voltage stabilizing filter module, except that the size of the capacitor may be set as required.
In an embodiment of the present application, as shown in fig. 2, there are a plurality of the high power modules, the micro control module is respectively in communication connection with each of the high power modules, and the micro control module is further configured to control the operating time of each of the high power modules. The high power module includes a first high power module and a second high power module. The micro control module sends a control signal to the high-power module to realize peak staggering work of the high-power module, avoid the phenomenon that interference generated by each high-power module is superposed, effectively reduce a single interference peak value and simultaneously reduce the requirement of the interference absorption module on interference suppression capability.
Specifically, as shown in fig. 2, when the first high-power module operates, the remaining high-power modules enter a low-power consumption or sleep mode, and when the second high-power module operates, the same principle is applied. The power supply module works orderly in time, and under the condition of normally realizing functions, the burden that a plurality of high-power modules work simultaneously to generate a superposition effect to increase the power supply and the interference absorption module is avoided. The high-power module has small fluctuation of the orderly working power supply in peak staggering, has low interference peak value and is beneficial to the stability of the power supply. Specifically, the first high-power module is a remote control signal transmitting module, the remote control signal transmitting module transmits corresponding remote control information according to a control instruction, the second high-power module is a voice module, and the voice module recognizes a voice signal or broadcasts corresponding voice according to the control instruction.
According to another exemplary embodiment of the present application, there is provided a remote controller including any one of the above-described power supply circuits. The remote controller comprises the power supply circuit, the micro control module and the high-power module are supplied with power in two paths, power supply isolation of the micro control module and the high-power module is achieved, electric signals after being subjected to voltage stabilization filtering through the first voltage stabilization filtering module can meet normal working requirements of the high-power module, interference generated by the high-power module is absorbed by the interference absorption module after passing through the first voltage stabilization filtering module and the power supply module, and therefore the micro control module cannot be interfered by the high-power module.
In another exemplary embodiment of the present application, there is provided a system including: the remote controller; and the remote controller is used for remotely controlling the electric appliance. According to the remote controller in the system, the micro control module and the high-power module are supplied with power in two ways, power supply isolation of the micro control module and the high-power module is achieved, an electric signal after being subjected to voltage stabilization filtering through the first voltage stabilization filtering module can meet the normal working requirement of the high-power module, interference generated by the high-power module is absorbed by the interference absorption module after passing through the first voltage stabilization filtering module and the power supply module, and the micro control module cannot be interfered by the high-power module.
In an embodiment of the present application, the electrical appliance is one of the following: air conditioner, TV set, electric fan, air purifier. Of course, other electric appliances than air conditioners, televisions, electric fans, and air cleaners may be used.
From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:
1) according to the power supply circuit, the micro control module and the high-power module are supplied with power in two paths, so that power supply isolation of the micro control module and the high-power module is realized, and interference generated by the high-power module is prevented from directly entering the micro control module to influence normal work of the micro control module. The electric signal after being subjected to voltage stabilization filtering by the first voltage stabilization filtering module can meet the normal working requirement of the high-power module, the first voltage stabilization filtering module can preliminarily absorb the interference generated by the high-power module, the interference generated by the high-power module is absorbed again by the interference absorption module after passing through the first voltage stabilization filtering module and the power supply module, and the path of the power supply direction interference transmitted to the micro control module through the power supply line is blocked, so that the micro control module cannot be interfered by the high-power module. And a more stable and pure power supply is provided for the micro control module.
2) The remote controller comprises a power supply circuit, the micro control module and the high-power module are supplied with power in two ways, power supply isolation of the micro control module and the high-power module is achieved, the electric signal after being subjected to voltage stabilization filtering through the first voltage stabilization filtering module can meet the normal working requirement of the high-power module, interference generated by the high-power module is absorbed by the interference absorption module after passing through the first voltage stabilization filtering module and the power supply module, and the micro control module cannot be interfered by the high-power module.
3) The system comprises a micro control module and a high-power module, wherein the micro control module and the high-power module are supplied with power in two ways, the micro control module and the high-power module are isolated from each other in power supply, the electric signal after being subjected to voltage stabilization filtering by a first voltage stabilization filtering module can meet the normal working requirement of the high-power module, and the interference generated by the high-power module is absorbed by an interference absorption module after passing through the first voltage stabilization filtering module and a power supply module, so that the micro control module cannot be interfered by the high-power module.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A power supply circuit, comprising:
the power supply module is provided with a first power supply end and a second power supply end;
the first voltage-stabilizing filtering module is provided with an input end and an output end, and the input end of the first voltage-stabilizing filtering module is electrically connected with the first power supply end of the power supply module;
the high-power module is electrically connected with the output end of the first voltage-stabilizing filtering module;
the interference absorption module is provided with an input end and an output end, the input end of the interference absorption module is electrically connected with the second power supply end of the power supply module, and the interference absorption module is used for absorbing interference generated by the high-power module;
and the micro control module is electrically connected with the output end of the interference absorption module.
2. The power supply circuit of claim 1, wherein the circuit further comprises:
and the second voltage-stabilizing filtering module is connected in series between the interference absorption module and the micro control module.
3. The power supply circuit of claim 1, wherein the interference absorption module comprises a first capacitor submodule and a first resistor submodule connected in parallel, wherein the first capacitor submodule comprises at least one first capacitor, and wherein the first resistor submodule comprises at least one first resistor.
4. The power supply circuit of claim 1 wherein said interference-absorbing module is a second resistor submodule, said second resistor submodule comprising at least a second resistor.
5. The power supply circuit of claim 4, wherein the second resistive submodule satisfies the condition:
Imax×Rx≤Vhland Imax 2×Rx≤WRWherein, ImaxRepresents the maximum current output by the power supply module when the power supply circuit works, RxRepresenting the resistance, V, of said second sub-module of resistorshlIndicating a high-low level tolerance, W, of said micro-control moduleRRepresenting the rated power output by the power supply module.
6. The power supply circuit according to any one of claims 1 to 5, wherein the first voltage stabilization filtering module comprises a second capacitive submodule and a third capacitive submodule, the second capacitive submodule and the third capacitive submodule being connected in parallel, the second capacitive submodule comprising at least one second capacitor and the third capacitive submodule comprising at least one third capacitor.
7. The power supply circuit according to any one of claims 1 to 5, wherein there are a plurality of said high power modules, said micro control module is connected to each of said high power modules in communication, and said micro control module is further configured to control the operation time of each of said high power modules.
8. A remote control comprising a power supply circuit as claimed in any one of claims 1 to 7.
9. A system, comprising:
the remote controller of claim 8;
and the remote controller is used for remotely controlling the electric appliance.
10. The system of claim 9, wherein the appliance is one of:
air conditioner, TV set, electric fan, air purifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110820371.4A CN113541460A (en) | 2021-07-20 | 2021-07-20 | Power supply circuit, remote controller and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110820371.4A CN113541460A (en) | 2021-07-20 | 2021-07-20 | Power supply circuit, remote controller and system |
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| Publication Number | Publication Date |
|---|---|
| CN113541460A true CN113541460A (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110820371.4A Pending CN113541460A (en) | 2021-07-20 | 2021-07-20 | Power supply circuit, remote controller and system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101388505A (en) * | 2008-09-26 | 2009-03-18 | 方家立 | Remote control socket |
| CN202127294U (en) * | 2011-07-06 | 2012-01-25 | 烟台正信电气有限公司 | Electric power control device |
| CN102573188A (en) * | 2010-12-22 | 2012-07-11 | 海洋王照明科技股份有限公司 | Remote control circuit of lamp |
| CN104467811A (en) * | 2014-10-31 | 2015-03-25 | 许继电气股份有限公司 | Anti-interference on-off input circuit |
| CN204615633U (en) * | 2015-04-28 | 2015-09-02 | 广州视源电子科技股份有限公司 | A kind of power circuit |
| CN205070994U (en) * | 2015-10-21 | 2016-03-02 | 厦门格绿能光电股份有限公司 | Power -line carrier communication system's terminal control unit |
| WO2020000844A1 (en) * | 2018-06-25 | 2020-01-02 | 格力电器（武汉）有限公司 | Switching power supply circuit |
-
2021
- 2021-07-20 CN CN202110820371.4A patent/CN113541460A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101388505A (en) * | 2008-09-26 | 2009-03-18 | 方家立 | Remote control socket |
| CN102573188A (en) * | 2010-12-22 | 2012-07-11 | 海洋王照明科技股份有限公司 | Remote control circuit of lamp |
| CN202127294U (en) * | 2011-07-06 | 2012-01-25 | 烟台正信电气有限公司 | Electric power control device |
| CN104467811A (en) * | 2014-10-31 | 2015-03-25 | 许继电气股份有限公司 | Anti-interference on-off input circuit |
| CN204615633U (en) * | 2015-04-28 | 2015-09-02 | 广州视源电子科技股份有限公司 | A kind of power circuit |
| CN205070994U (en) * | 2015-10-21 | 2016-03-02 | 厦门格绿能光电股份有限公司 | Power -line carrier communication system's terminal control unit |
| WO2020000844A1 (en) * | 2018-06-25 | 2020-01-02 | 格力电器（武汉）有限公司 | Switching power supply circuit |
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Application publication date: 20211022 |