CN215681800U - Power taking circuit, control panel and control system - Google Patents
Power taking circuit, control panel and control system Download PDFInfo
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- CN215681800U CN215681800U CN202121535893.1U CN202121535893U CN215681800U CN 215681800 U CN215681800 U CN 215681800U CN 202121535893 U CN202121535893 U CN 202121535893U CN 215681800 U CN215681800 U CN 215681800U
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Abstract
The application provides a get electric circuit, control panel and control system, get electric module, first rectifier bridge and second rectifier bridge including AC-DC. The first input end of the first rectifier bridge is connected with a zero line of commercial power, the second input end of the first rectifier bridge is connected with a live line of the commercial power, the first output end of the first rectifier bridge is connected with the first end of the AC-DC power taking module, and the second output end of the first rectifier bridge is connected with the second end of the AC-DC power taking module; a first input end of the second rectifier bridge is connected with a live wire of a mains supply, a second input end of the second rectifier bridge is connected with the load connecting wire, a first output end of the second rectifier bridge is connected with a first end of the AC-DC power taking module, and a second output end of the second rectifier bridge is connected with a second end of the AC-DC power taking module; the AC-DC power taking module is used for outputting the voltage on the live wire when the zero line and the live wire of the commercial power supply provide alternating current for the first rectifier bridge, and outputting the voltage on the load connecting wire and the live wire when the live wire and the load connecting wire of the commercial power supply provide alternating current for the second rectifier bridge. By adopting the circuit, the power can be taken by the load connected on the load connecting line no matter whether the load is in a working state or not.
Description
Technical Field
The application relates to the technical field of electronics, concretely relates to get electric circuit, control panel and control system.
Background
At present, induction switches such as infrared induction, acousto-optic control and touch delay switches and various household detectors, such as smoke detection alarms and infrared alarms, which are common in the market, are powered by a single-live-wire switching circuit. Because only one power supply source is arranged in the single-live-wire switch circuit, the power supply voltage of the switch circuit is greatly changed when the load lamp is switched on or switched off. And when the power supply circuit is closed, a power supply source cannot be provided for the detectors, so that the power supply circuit is provided, and the power supply circuit can supply power to the household detectors, the inductive switches and the like no matter the load is in a working state or a non-working state, so that the technical problem to be solved urgently is solved.
Disclosure of Invention
Content of application
In view of the above problems, the present application provides an electricity taking circuit, a control panel and a control system, which have simple structures and can take electricity when a load is in a working state or a non-working state.
The embodiment of the application is realized by adopting the following technical scheme:
an electricity taking circuit comprising: the power supply device comprises an AC-DC power taking module, a first rectifier bridge and a second rectifier bridge. The first input end of the first rectifier bridge is connected with a zero line of commercial power, the second input end of the first rectifier bridge is connected with a live line of the commercial power, the first output end of the first rectifier bridge is connected with the first end of the AC-DC power taking module, and the second output end of the first rectifier bridge is connected with the second end of the AC-DC power taking module; the first input end of the second rectifier bridge is connected with the live wire of the commercial power, the second input end of the second rectifier bridge is connected with a load connecting wire, the first output end of the second rectifier bridge is connected with the first end of the AC-DC power taking module, the second output end of the second rectifier bridge is connected with the second end of the AC-DC power taking module, the load connecting wire is a connecting wire connected between the first end of the load and the live wire, and the second end of the load is used for being connected with the zero line; the AC-DC power taking module is used for outputting voltage on a live wire when the zero line and the live wire of the commercial power supply provide alternating current for the first rectifier bridge, and outputting voltage on the load connecting wire and the live wire when the live wire and the load connecting wire of the commercial power supply provide alternating current for the second rectifier bridge.
In an implementation manner, the power-taking circuit further includes a first switching device, and the first switching device is connected between the live wire and the load connection line.
In one implementation, the power-taking circuit further comprises an on-state power-taking module, the on-state power-taking module is connected between the live wire and the load connecting wire, and is used for switching on the first switch device and enabling the live wire and the load connecting wire of the mains supply to provide alternating current for the second rectifier bridge, so that the output voltage of the on-state power-taking module is obtained.
In an implementation mode, the power taking circuit further comprises a third rectifier bridge and a second switch device, the first input end of the third rectifier bridge is connected with the live wire of the mains supply, the second input end of the mains supply is connected with the load connecting line, the first output end of the third rectifier bridge is connected with the first end of the power taking module of the AC-DC, the second output end of the third rectifier bridge is connected with the second end of the power taking module of the AC-DC, and the first end of the second switch is connected with the load connecting line and the second end of the second switch is connected with the first switch device and the on-state power taking module.
In one possible embodiment, the third rectifier bridge and the second switching device are respectively multiple, and each third rectifier bridge corresponds to one second switching device.
In one implementation mode, the on-state power taking module comprises a power taking unit and a protection unit, wherein the power taking unit comprises an MOS transistor; the on-state electricity taking module comprises an electricity taking unit and a protection unit, and the electricity taking unit comprises an MOS (metal oxide semiconductor) tube; the protection unit comprises a voltage stabilizing diode, a resistor and a capacitor;
the drain electrode of the MOS tube is connected with the live wire, the source electrode of the MOS tube is connected between the first switching device and the second end of the second rectifier bridge, the grid electrode of the MOS tube is connected with the first end of the resistor and the first end of the capacitor, the second end of the resistor and the second end of the capacitor are respectively connected with the live wire, the anode of the voltage stabilizing diode is connected between the first end of the resistor and the first end of the capacitor, the cathode of the voltage stabilizing diode is connected with the second end of the second rectifier bridge, and the diode is connected between the source electrode of the MOS tube and the second end of the second rectifier bridge.
In an implementation manner, the power taking circuit further includes a voltage reducing circuit, an input end of the voltage reducing circuit is connected to the first output end of the first rectifier bridge and the first output end of the second rectifier bridge respectively, and an output end of the voltage reducing circuit is connected to the first input end of the AC-DC power taking module.
In one possible embodiment, the rectifier bridge includes four rectifier diodes, and every two rectifier diodes are connected in parallel after being connected in series.
The embodiment of the application further provides a control panel, including touch-control display screen, treater and foretell get the electric circuit, the AC-DC that treater and touch-control display screen and get in the electric circuit gets the electric module and is connected respectively.
The embodiment of the application further provides a control system, which comprises a communication module and the control panel, wherein the communication module is associated with electronic equipment, and the control panel is used for sending a control signal to the electronic equipment through the communication module so as to control the working state of the electronic equipment.
The power taking circuit, the control panel and the control system provided by the embodiment of the application are characterized in that an AC-DC power taking module, a first rectifier bridge and a second rectifier bridge are arranged. The first input end of the first rectifier bridge is connected with a zero line of commercial power, the second input end of the first rectifier bridge is connected with a live line of the commercial power, the first output end of the first rectifier bridge is connected with the first end of the AC-DC power taking module, and the second output end of the first rectifier bridge is connected with the second end of the AC-DC power taking module; a first input end of the second rectifier bridge is connected with a live wire of a mains supply, a second input end of the second rectifier bridge is connected with the load connecting wire, a first output end of the second rectifier bridge is connected with a first end of the AC-DC power taking module, and a second output end of the second rectifier bridge is connected with a second end of the AC-DC power taking module; the AC-DC power taking module is used for outputting the voltage on the live wire when the zero line and the live wire of the commercial power supply provide alternating current for the first rectifier bridge, and outputting the voltage on the load connecting wire and the live wire when the live wire and the load connecting wire of the commercial power supply provide alternating current for the second rectifier bridge. By adopting the circuit, power can be taken on the circuit connected with the load no matter whether the load is in a working state or not.
These and other aspects of the present application will be more readily apparent from the following description of the embodiments.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 shows a block diagram of a power taking circuit provided in an embodiment of the present application.
Fig. 2 shows a schematic circuit diagram of a load provided by the embodiment of the present application connected to a commercial power through a load connection line.
Fig. 3 shows a schematic circuit diagram of a rectifying module according to an embodiment of the present application.
Fig. 4 shows a schematic diagram of a package structure of a rectifier module according to an embodiment of the present application.
Fig. 5 shows another block diagram of a power-taking circuit according to another embodiment of the present application.
Fig. 6 shows a schematic circuit diagram of an on-state power-taking module according to an embodiment of the present application.
Fig. 7 shows another block diagram of a power taking circuit provided in an embodiment of the present application.
Fig. 8 shows a connection block diagram of a control panel provided in an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1, fig. 1 schematically illustrates a power-taking circuit 100 provided in an embodiment of the present application, which includes an AC-DC power-taking module 110, a first rectifier bridge 120, and a second rectifier bridge 130.
A first input end of the first rectifier bridge 120 is connected with a zero line of commercial power, a second input end of the first rectifier bridge is connected with a live line of the commercial power, a first output end of the first rectifier bridge is connected with a first end of the AC-DC power taking module 110, and a second output end of the first rectifier bridge is connected with a second end of the AC-DC power taking module 110; a first input end of the second rectifier bridge 130 is connected with a live wire of the commercial power, a second input end of the second rectifier bridge is connected with a load connecting wire, a first output end of the second rectifier bridge is connected with a first end of the AC-DC power taking module 110, a second output end of the second rectifier bridge is connected with a second end of the AC-DC power taking module 110, the load connecting wire is a connecting wire connected between a first end of a load and the live wire, and the second end of the load is used for being connected with the zero wire; the AC-DC power taking module 110 is configured to output a voltage on the live wire when the zero line and the live wire of the commercial power provide the alternating current to the first rectifier bridge 120, and output a voltage on the load connection line and the live wire when the live wire and the load connection line of the commercial power provide the alternating current to the second rectifier bridge 130.
As shown in fig. 2, there is a schematic diagram of the neutral wire, the live wire and the load connecting wire, wherein the load is usually connected in series between the neutral wire and the live wire, and a first switching device K1 is usually connected in series between the load connecting wire and the neutral wire, and the first switching device K1 is used for controlling the working state of the load and controlling whether the neutral wire, the live wire and the load connecting wire in the commercial power supply provide alternating current to the first rectifying bridge 120 and the second rectifying bridge 130.
Specifically, when the first switching device K1 is turned off (i.e., the zero line is in an idle connection state, the load is not connected, and the load is in a non-operating state), the zero line and the live line of the utility power supply AC power to the first rectifier bridge 120, so that the AC-DC power supply module 110 outputs voltage on the live line; and when the first switching device K1 is connected (the zero line is connected to the load connection line, and the load is in a working state), the live line and the load connection line of the utility power supply the second rectifier bridge 130 with AC power, so that the AC-DC power-taking module 110 outputs voltages on the load connection line and the live line.
The AC-DC power obtaining module 110 may include an AC-DC converter, where AC (Alternating current) DC (Direct current), AC/DC conversion is to convert Alternating current into Direct current, the AC/DC converter is a device to convert Alternating current into Direct current, power flow direction of the AC/DC converter may be bidirectional, power flow from a power supply to a load is called rectification, and power flow from the load back to the power supply is called "active inversion".
The term rectification is the colloquial term for the work done by the principle of unidirectional conduction of diodes that are forward conducting and reverse blocking, i.e. a diode allows only its positive pole to be charged positively and its negative pole to be charged negatively. Diodes allow current to pass through them only in one direction so that when they are connected to an ac circuit they allow current to flow in the circuit only in one direction, so-called "rectification".
In this embodiment, the first rectifier bridge 120 and the second rectifier bridge 130 are both bridge rectifier circuits, wherein the first rectifier bridge 120 may be a full-bridge rectifier circuit or a half-bridge rectifier circuit; the second rectifying circuit may be a full-bridge rectifying circuit or a half-bridge rectifying circuit.
In an implementation manner, the first rectifying bridge 120 and the second rectifying bridge 130 are full-bridge rectifying circuits, wherein the full-bridge rectifying circuit is composed of four rectifying diodes, and every two rectifying diodes are connected in series and then connected in parallel for rectifying the alternating current into the direct current.
Fig. 3 is a schematic diagram of a full-bridge rectifier circuit, wherein the full-bridge rectifier circuit is composed of four diodes (e.g. four rectifier diodes VD1, VD2, VD3 and VD4 in fig. 3), wherein VD2 and VD4 form a set of positive polarity full-wave rectifier circuit, VD1 and VD3 form another set of negative polarity full-wave rectifier circuit, B3 is rectified positive output, C4 is rectified negative output, and a1 and a2 together serve as an ac input terminal.
Specifically, the cathode of the rectifying diode VD1 is connected to the anode of the rectifying diode VD2, and serves as the first input end of the full-bridge rectifying circuit; the cathode of the rectifying diode VD3 is connected with the anode of the rectifying diode VD4 and serves as a second input end of the full-bridge rectifying circuit; the cathode of the rectifying diode VD2 is connected with the cathode of the rectifying diode VD4 and serves as a first output end of the full-bridge rectifying circuit; the anode of the rectifying diode VD1 is connected to the anode of the rectifying diode VD3, and serves as a second output terminal of the full-bridge rectifying circuit.
As shown in fig. 4, which is a physical product diagram of the full-bridge rectifier circuit, a1 and a2 are integrated at the middle position, and the positive and negative electrodes (B3 and C4) are at the outermost sides. It should be understood that fig. 4 is only an exemplary one, and the physical product structure after the full-bridge rectifier circuit is packaged may be in more forms, and is not limited in detail here.
By adopting the power taking circuit 100 of the application, when the load connecting line is not connected with the zero line (namely, the zero line is in a null connection state, and the load is in a non-working state), the zero line and the live line of the commercial power can provide alternating current for the first rectifier bridge 120, so that the AC-DC power taking module 110 outputs the voltage on the live line; and when the load connection line is connected to the zero line (the zero line is in a connection state, and the load is in a working state), the live line and the load connection line of the commercial power supply provide alternating current to the second rectifier bridge 130, so that the AC-DC power taking module 110 outputs voltages on the load connection line and the live line. Therefore, when the load is powered or not powered by the mains supply, the power taking circuit 100 can achieve power taking, and the circuit structure is simple and easy to achieve.
In an implementation manner, the power taking circuit 100 may further include a voltage conversion module, which may be specifically a voltage boosting module or a voltage reducing module, and may be set according to actual requirements.
For example, if the voltage extracted by the power-taking module is used for supplying power to a low-power device, such as a sound detection sensor, a light detection sensor, a harmful gas detection sensor, and the like, since the voltage of the utility power is usually higher, only a lower voltage is needed when the low-power device is supplied, the voltage conversion module is a voltage-reducing module. If the power taking module is used for supplying power to a high-power device, such as a device with a working voltage greater than 220V, the voltage conversion module is a boosting module.
It should be understood that the power-taking circuit 100 may further include more or fewer sub-circuits or components, such as one or more sub-circuits of a filter circuit, a voltage regulator circuit, a voltage protection circuit, and the like, and it should be understood that the voltage regulator circuit, the voltage protection circuit, and the like may specifically include one or more electrical components of a voltage regulator tube, a switch, a capacitor, a resistor, and the like.
As an implementation manner, if the power-taking circuit 100 further includes a filter circuit, the filter circuit may be connected to the output end of the AC-DC power-taking module 110, and the filter circuit may connect the capacitor C or the inductor L in parallel or in series with the load RL of the rectifier circuit by using the property that the voltage across the capacitor C or the current passing through the inductor L cannot change suddenly, so that the AC component in the output of the rectifier circuit may be filtered to obtain a relatively smooth DC power.
As another possible implementation manner, if the power-taking circuit 100 further includes a voltage stabilizing circuit, an input end of the voltage stabilizing circuit may be connected to an output end of the AC-DC power-taking module 110, and the voltage stabilizing circuit may be configured to enable the output direct-current voltage of the power-taking circuit 100 to be substantially unchanged with the change of the commercial power current.
Referring to fig. 5, another embodiment of the present application provides a power-taking circuit 100, where the power-taking circuit 100 includes: the AC-DC power-taking module 110, the first rectifier bridge 120, the second rectifier bridge 130, the first switching device K1 and the on-state power-taking module 140.
A first input end of the first rectifier bridge 120 is connected with a zero line of a commercial power, a second input end of the first rectifier bridge is connected with a live line of the commercial power, a first output end of the first rectifier bridge is connected with a first end of the AC-DC power taking module 110, and a second output end of the first rectifier bridge is connected with a second end of the AC-DC power taking module 110; a first input end of the second rectifier bridge 130 is connected with a live wire of the commercial power, a second input end of the second rectifier bridge is connected with a load connecting wire, a first output end of the second rectifier bridge is connected with a first end of the AC-DC power taking module 110, a second output end of the second rectifier bridge is connected with a second end of the AC-DC power taking module 110, the load connecting wire is a connecting wire connected between a first end of a load and the live wire, and the second end of the load is used for being connected with the zero wire; the AC-DC power taking module 110 is configured to output a voltage on a live wire when a zero line and a live wire of a commercial power provide an alternating current to the first rectifier bridge 120, and output a voltage on a load connection line and a live wire when a live wire and a load connection line of the commercial power provide an alternating current to the second rectifier bridge 130; the first switching device K1 is connected between the live line and the load connection line; the on-state power taking module 140 is connected between the live wire and the load connection line, and is used for switching on the first switching device K1, and when the live wire and the load connection line of the commercial power provide alternating current to the second rectifier bridge 130, the on-state power taking module 140 outputs voltage.
The first switching device K1 may be an electronic switch, such as a relay, a triode, or a field effect, or may be a physical switch, which is not limited herein.
The on-state power taking module 140 is specifically configured to output voltages on the live line and the light line when the first switching device K1 is turned on (closed).
The on-state power taking module 140 may be formed by one or more devices of a resistor, a field effect transistor, a triode, a capacitor, and the like.
Referring to fig. 6, in an implementation manner, the on-state power-taking module 140 includes a power-taking unit 142 and a protection unit 144, where the power-taking unit 142 includes a MOS transistor; the on-state power taking module 140 includes a power taking unit 142 and a protection unit 144, and the power taking unit 142 includes an MOS transistor; the protection unit 144 includes a zener diode D2, a diode D1, a resistor R, and a capacitor C.
The drain of the MOS transistor is connected to the live wire, the source of the MOS transistor is connected between the first switching device K1 and the second end of the second rectifying bridge 130, the gate of the MOS transistor is connected to the first end of the resistor R and the first end of the capacitor C, the second end of the resistor R and the second end of the capacitor C are respectively connected to the live wire, the anode of the zener diode D1D2 is connected between the first end of the resistor R and the first end of the capacitor C, the cathode of the zener diode D1D2 is connected to the second end of the second rectifying bridge 130, and the diode D1 is connected between the source of the MOS transistor and the second end of the second rectifying bridge 130.
By adopting the on-state power taking module 140, when the first switching device K1 is turned off and the live line of the commercial power and the load connecting line supply alternating current to the second rectifier bridge 130, the AC-DC power taking module 110 outputs voltages on the load connecting line and the live line; and when the first switching device K1 is connected and the live line of the utility power and the load connection line supply ac power to the second rectifier bridge 130, the drain of the MOS transistor in the on-state power-taking module 140 outputs voltage to complete power-taking.
Referring to fig. 7, in an implementation manner, the power-taking circuit 100 further includes a third rectifier bridge 150 and a second switching device K2.
The first input end of the third rectifier bridge 150 is connected with the live wire of the commercial power, the second input end is connected with the load connecting line, the first output end is connected with the first end of the AC-DC power taking module 110, the second output end is connected with the second end of the AC-DC power taking module 110, the first end of the second switch is connected with the load connecting line, and the second end is connected between the first switch device K1 and the on-state power taking module 140.
For a detailed description of the third rectifier bridge 150, reference may be made to the foregoing detailed description of the first rectifier bridge 120 and the second rectifier bridge 130, which is not repeated herein. The number of the third rectifier bridges 150 may be one or more.
In one possible embodiment, the number of the third rectifier bridges 150 and the number of the second switching devices K2 are plural, and each third rectifier bridge 150 corresponds to one second switching device K2.
Through setting up third rectifier bridge 150 and second switching device K2 to the realization also can get the electricity through third rectifier bridge 150 in the condition that has second rectifier bridge 130 trouble, thereby has effectively improved the stability of getting electric circuit 100. Meanwhile, the magnitude of the voltage value or the current value output by the AC-DC power-taking circuit 100 and the on-state power-taking module 140 can be controlled by controlling the number of the third rectifier bridges 150.
Referring to fig. 8, another embodiment of the present application provides a control panel, which includes a processor 200, a touch display screen 300 and the power-taking circuit 100 in the foregoing embodiments, wherein the processor 200 is connected to the touch display screen 300 and the AC-DC power-taking module 110 in the power-taking circuit 100, respectively.
The control panel can be provided with an electric appliance, and the electric appliance is used for working under the voltage output by the power taking module. The electrical device may be a communication module, and the communication module may be associated with an electronic device, it should be understood that the electrical device may also be a sound detection sensor, an optical detection sensor, or other sensors, and may also be a relay, which are not described in detail herein.
The processor 200 may be implemented in at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The processor may integrate one or more of a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), a modem, and the like.
The control system comprises a communication module and the control panel, wherein the communication module is associated with electronic equipment, and the control panel is used for sending a control signal to the electronic equipment through the communication module so as to control the working state of the electronic equipment.
The electronic equipment can be electronic scales such as a weight scale and a body fat scale, or intelligent wearing products such as a bracelet and a watch, or household appliances such as a refrigerator, a floor sweeping robot, an air conditioner, a television and an intelligent closestool, or terminal equipment such as a mobile phone, a tablet personal computer, a notebook computer, a desktop computer and an upper computer, or internet of things equipment, or an earphone, an electronic cigarette, a mobile power supply and the like, and the type of the electronic equipment is not limited by the embodiment.
To sum up, the power-taking circuit 100, the control panel and the control system provided in the embodiment of the present application include an AC-DC power-taking module 110, a first rectifier bridge 120 and a second rectifier bridge 130. A first input end of the first rectifier bridge 120 is connected with a zero line of commercial power, a second input end is connected with a live line of the commercial power, a first output end is connected with a first end of the AC-DC power taking module 110, and a second output end is connected with a second end of the AC-DC power taking module 110; a first input end of the second rectifier bridge 130 is connected with a live wire of the commercial power, a second input end is connected with a load connecting wire, a first output end is connected with a first end of the AC-DC power taking module 110, and a second output end is connected with a second end of the AC-DC power taking module 110; when the load connecting line is not connected with the zero line (namely the zero line is in an idle connection state and the load is in a non-working state), the zero line and the live line of the commercial power supply provide alternating current for the first rectifier bridge 120, and further the AC-DC power taking module 110 outputs voltage on the live line; and when the load connection line is connected to the zero line (the zero line is in a connection state, and the load is in a working state), the live line and the load connection line of the commercial power supply provide alternating current to the second rectifier bridge 130, so that the AC-DC power taking module 110 outputs voltages on the load connection line and the live line. Therefore, when the load is powered or not powered by the mains supply, the power taking circuit 100 can achieve power taking, and the circuit structure is simple and easy to achieve.
Although the present application has been described with reference to the preferred embodiments, it is to be understood that the present application is not limited to the disclosed embodiments, but rather, the present application is intended to cover various modifications, equivalents and alternatives falling within the spirit and scope of the present application.
Claims (10)
1. A power-taking circuit is characterized by comprising:
an AC-DC power taking module;
the first input end of the first rectifier bridge is connected with a zero line of commercial power, the second input end of the first rectifier bridge is connected with a live line of the commercial power, the first output end of the first rectifier bridge is connected with the first end of the AC-DC power taking module, and the second output end of the first rectifier bridge is connected with the second end of the AC-DC power taking module;
a first input end of the second rectifier bridge is connected with a live wire of the commercial power, a second input end of the second rectifier bridge is connected with a load connecting wire, a first output end of the second rectifier bridge is connected with a first end of the AC-DC power-taking module, a second output end of the second rectifier bridge is connected with a second end of the AC-DC power-taking module, the load connecting wire is a connecting wire connected between the first end of the load and the live wire, and the second end of the load is used for being connected with the zero wire;
the AC-DC power taking module is used for outputting voltage on a live wire when the zero line and the live wire of the commercial power supply provide alternating current for the first rectifier bridge, and outputting voltage on the load connecting wire and the live wire when the live wire and the load connecting wire of the commercial power supply provide alternating current for the second rectifier bridge.
2. The power taking circuit according to claim 1, further comprising a first switching device connected between the live line and the load connection line.
3. The power taking circuit according to claim 2, further comprising an on-state power taking module, wherein the on-state power taking module is connected between the live wire and the load connection line, and is configured to output a voltage through the on-state power taking module when the first switching device is turned on and the live wire and the load connection line of the commercial power provide the alternating current to the second rectifier bridge.
4. The power taking circuit according to claim 3, further comprising a third rectifier bridge and a second switch device, wherein a first input end of the third rectifier bridge is connected with a live wire of the commercial power, a second input end of the third rectifier bridge is connected with a load connection line, a first output end of the third rectifier bridge is connected with a first end of the AC-DC power taking module, a second output end of the third rectifier bridge is connected with a second end of the AC-DC power taking module, a first end of the second switch is connected with the load connection line, and a second end of the second switch is connected between the first switch device and the on-state power taking module.
5. The power-taking circuit according to claim 4, wherein the number of the third rectifier bridges and the number of the second switching devices are plural, and each third rectifier bridge corresponds to one second switching device.
6. The power taking circuit according to claim 3, wherein the on-state power taking module comprises a power taking unit and a protection unit, and the power taking unit comprises an MOS (metal oxide semiconductor) tube; the on-state electricity taking module comprises an electricity taking unit and a protection unit, and the electricity taking unit comprises an MOS (metal oxide semiconductor) tube; the protection unit comprises a voltage stabilizing diode, a resistor and a capacitor;
the drain electrode of the MOS tube is connected with the live wire, the source electrode of the MOS tube is connected between the first switching device and the second end of the second rectifier bridge, the grid electrode of the MOS tube is connected with the first end of the resistor and the first end of the capacitor, the second end of the resistor and the second end of the capacitor are respectively connected with the live wire, the anode of the voltage stabilizing diode is connected between the first end of the resistor and the first end of the capacitor, the cathode of the voltage stabilizing diode is connected with the second end of the second rectifier bridge, and the diode is connected between the source electrode of the MOS tube and the second end of the second rectifier bridge.
7. The power-taking circuit according to claim 1, further comprising a voltage-reducing circuit, wherein an input end of the voltage-reducing circuit is connected to the first output end of the first rectifier bridge and the first output end of the second rectifier bridge, and an output end of the voltage-reducing circuit is connected to the first input end of the AC-DC power-taking module.
8. The power taking circuit according to claim 1, wherein the rectifier bridge comprises four rectifier diodes, and every two rectifier diodes are connected in series and then connected in parallel.
9. A control panel, comprising a touch display screen, a processor and the power-taking circuit of any one of claims 1 to 8, wherein the processor is connected to the touch display screen and the AC-DC power-taking module in the power-taking circuit respectively.
10. A control system, comprising a communication module associated with an electronic device and the control panel of claim 9, wherein the control panel is configured to send a control signal to the electronic device through the communication module to control an operating state of the electronic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121535893.1U CN215681800U (en) | 2021-07-07 | 2021-07-07 | Power taking circuit, control panel and control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121535893.1U CN215681800U (en) | 2021-07-07 | 2021-07-07 | Power taking circuit, control panel and control system |
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| Publication Number | Publication Date |
|---|---|
| CN215681800U true CN215681800U (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121535893.1U Active CN215681800U (en) | 2021-07-07 | 2021-07-07 | Power taking circuit, control panel and control system |
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| Country | Link |
|---|---|
| CN (1) | CN215681800U (en) |
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2021
- 2021-07-07 CN CN202121535893.1U patent/CN215681800U/en active Active
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