Power supply system of single live wire switch and control method thereof, single live wire switch

Abstract

The present invention relates to a power taking system for a single live wire switch and a control method thereof, and a single live wire switch, wherein the power taking system is connected to an electrical device and a wireless controller, and the wireless controller controls a switch module for changing the operating state of the electrical device. The power taking system comprises: a power taking module connected between a power supply and a wireless controller, and the power supply supplies power to the wireless controller and the electrical device, wherein the power taking module is configured to obtain electric energy from the power supply during power-on of the electrical device, and provide the obtained electric energy to the wireless controller; and a control module connected to the power taking module, configured to detect the energy consumption of the wireless controller, and provide a control signal to the power taking module according to the change of the energy consumption of the wireless controller, so as to adjust the electric energy obtained by the power taking module from the power supply.

Description

Technical Field

[0001] The invention relates to a power taking system of a single live wire switch and a control method thereof, and a single live wire switch. Background Art

[0002] With the development of science and technology and the improvement of living standards, consumers have put forward new requirements for home use. For example, for electrical appliances with lighting functions, consumers not only require convenient control of the lighting time and brightness of the lighting device, but also require that the lighting device can cooperate with other systems in the home to meet consumers' requirements for lighting scenes in different life situations. Consumers need intelligent switch control systems to improve the quality of life and hope to ensure convenience and comfort in life.

[0003] In this regard, the traditional switch has obvious defects. It does not have a remote control function and cannot meet consumers' lighting needs for different scenes. In comparison, the electronic switch has a broad application prospect. On the one hand, since the installation and replacement of the electronic switch are very convenient and simple, the electronic switch can be used to directly replace the traditional wall switch that is very popular in traditional homes; on the other hand, the electronic switch can also be used to conveniently realize remote control or intelligent control. For example, the ZigBee smart switch in the smart home has functions such as wireless remote control and touch sensing. However, when the electronic switch is closed, the voltage across the electronic switch is not enough to provide power for its own electronic device. For this reason, an off-state power supply module is provided in the electronic switch to take power for the electronic switch when the load (such as a lighting device) controlled by the electronic switch is turned off. In addition, since the load controlled by the electronic switch is uncertain, for example, the electronic switch can be used to control non-dimmable LEDs, dimmable LEDs, smart lights, incandescent lamps, etc., it becomes difficult to solve the power supply problem of the electronic switch. Summary of the invention

[0004] The present invention provides a power supply system for a single live wire switch, wherein the power supply system is connected to an electrical device and a wireless controller, the wireless controller controls a switch module for changing the operating state of the electrical device, and the power supply system comprises: a power supply module connected between a power supply and a wireless controller, the power supply supplies power to the wireless controller and the electrical device, wherein the power supply module is configured to obtain electric energy from the power supply during the period when the electrical device is powered on, and provide the obtained electric energy to the wireless controller; and a control module connected to the power supply module, configured to detect the energy consumption of the wireless controller, and according to the energy consumption change of the wireless controller, provide a control signal to the power supply module to adjust the electric energy obtained by the power supply module from the power supply. The power supply system according to the present invention can dynamically adjust the electric energy obtained from the power supply according to the energy consumption of the wireless controller as a load, so that, for example, more and sufficient electric energy can be obtained in a two-wire electrical appliance control system to meet the use requirements of both high-energy-consuming wireless controllers (such as WIFI or WIFI / BLE dual mode) and low-energy-consuming wireless controllers.

[0005] According to an embodiment of the power taking system of the present invention, the control module detects the energy consumption of the wireless controller, including detecting the voltage representing the energy consumption of the wireless controller, and gradually adjusting the duty cycle of the control signal according to the change of the detected voltage. This provides a simple way to detect the energy consumption of the wireless controller, so as to dynamically determine the current energy consumption of the wireless controller, and then prepare for the power taking system to determine whether to draw more or less electric energy.

[0006] According to an embodiment of the power supply system of the present invention, the control module is configured to: when the detected voltage is greater than a first threshold, adjust the duty cycle of the control signal to a first predetermined duty cycle; when the detected voltage is less than a second threshold, reduce the duty cycle of the control signal from the first predetermined duty cycle to a second predetermined duty cycle, wherein the second threshold is less than the first threshold; and when the detected voltage is less than a third threshold, reduce the duty cycle of the control signal from the second predetermined duty cycle to a third predetermined duty cycle, wherein the third threshold is less than the second threshold. The present invention determines the energy consumption of the wireless controller by adopting an open-loop control logic, and will not immediately or suddenly draw electrical energy because of the large energy consumption of the load, thereby avoiding affecting the normal use of electrical equipment (e.g., lighting devices) due to excessively fast or drastic power withdrawal, so that the power supply system is suitable for a variety of different types of electrical equipment.

[0007] According to an embodiment of the power taking system of the present invention, the control module is configured to gradually reduce the duty cycle of the control signal by a predetermined amount. The control module can achieve a smooth change in the duty cycle by setting a small predetermined change amount, so that the power taking system will not cause a drastic change in voltage due to the change in energy consumption of the wireless controller.

[0008] According to an embodiment of the power extraction system of the present invention, the power extraction module includes: a power extraction load, which is connected in series with the electrical device. The power extraction load can be used to provide a stable impedance to the electrical load, so that the power extraction module can obtain stable and sufficient electrical energy. The power extraction load can be implemented as a single component or a circuit including multiple components. The power extraction load provided according to the present invention can not be disconnected when the electrical device is running but can be continuously turned on to absorb electrical energy.

[0009] According to an embodiment of the power taking system of the present invention, the power taking module further includes: a plurality of switch units connected in parallel with the power taking load, wherein the plurality of switch units are switched according to control signals. By adjusting the closing time of the plurality of switch units, the power drawn by the power taking module can be effectively adjusted, thereby adjusting the power provided to the load of the wireless controller.

[0010] According to an embodiment of the power extraction system of the present invention, the power extraction module further includes: a rectifier circuit configured to work together with a plurality of switch units to obtain electrical energy in the positive half cycle and the negative half cycle of the power supply. The power extraction module can maximize the use of the electrical energy provided by the alternating current and improve the power extraction efficiency.

[0011] According to an embodiment of the power taking system of the present invention, the plurality of switch units include two MOS tubes connected in reverse series. Depending on the energy consumption of the wireless controller, the control signal provided to the two MOS tubes in series, such as a pulse width modulation signal, is adjusted.

[0012] According to an embodiment of the power taking system of the present invention, the electrical device is a lighting device. Therefore, the power taking system of the present invention can prevent the lighting device from flickering during operation due to too fast or too intense power taking.

[0013] According to another aspect of the present invention, the present invention also provides a single live wire switch, which includes: a power supply system according to the above description; a power converter, configured to convert the voltage output by the power supply system into a supply voltage; and a wireless controller, configured to obtain electrical energy from the supply voltage to control the operating state of the electrical equipment.

[0014] According to another aspect of the present invention, the present invention also provides a method for controlling a power-taking system of a single-live-wire switch, wherein the power-taking system is connected to an electrical device and a wireless controller, the wireless controller controls a switch module for changing the operating state of the electrical device, and the power-taking system includes a power-taking module and a control module, and the method includes: during power-on of the electrical device, the power-taking module obtains electrical energy from a power source and provides the obtained electrical energy to the wireless controller; and the control module detects the energy consumption of the wireless controller, and according to the energy consumption change of the wireless controller, provides a control signal to the power-taking module to adjust the electrical energy obtained by the power-taking module from the power source. The present invention can dynamically adjust the electrical energy obtained from the power source, thereby meeting the use requirements of both high-energy-consuming wireless controllers and low-energy-consuming wireless controllers.

[0015] According to the method for controlling the power taking system of a single live wire switch of the present invention, the control module detects the energy consumption of the wireless controller, including: the control module detects the voltage representing the energy consumption of the wireless controller, and gradually adjusts the duty cycle of the control signal according to the change of the detected voltage. Thus, the energy consumption of the current wireless controller can be dynamically determined, and then the power taking system is prepared to determine whether to draw more or less electric energy.

[0016] According to the method for controlling the power-taking system of a single live wire switch of the present invention, gradually adjusting the duty cycle of the control signal includes: when the detected voltage is greater than the first threshold, the control module adjusts the duty cycle of the control signal to the first predetermined duty cycle; when the detected voltage is less than the second threshold, the control module reduces the duty cycle of the control signal from the first predetermined duty cycle to the second predetermined duty cycle, wherein the second threshold is less than the first threshold; and when the detected voltage is less than the third threshold, the control module reduces the duty cycle of the control signal from the second predetermined duty cycle to the third predetermined duty cycle, wherein the third threshold is less than the second threshold. Thus, electric energy will not be drawn immediately or suddenly due to the large energy consumption of the load, thereby avoiding the use of electrical equipment being affected by drawing power too quickly or too violently, such as causing the lighting device to flicker.

[0017] According to the method for controlling the power supply system of a single live wire switch of the present invention, gradually adjusting the duty cycle of the control signal includes: gradually reducing the duty cycle of the control signal by a predetermined amount, and achieving a smooth change of the duty cycle by setting a small predetermined change amount.

[0018] According to another aspect of the present invention, the present invention further provides a storage medium, which includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the method described above.

[0019] According to another aspect of the present invention, the present invention further provides a processor, wherein the processor is used to run a program, wherein the program executes the method described above when running.

[0020] According to another aspect of the present invention, the present invention also provides a computer program product, which is tangibly stored on a computer-readable medium and includes computer-executable instructions, which, when executed, cause at least one processor to perform the method described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constitute a part of this specification and are used to help further understand the present invention. These drawings illustrate embodiments of the present invention and are used together with the specification to explain the principles of the present invention. In the accompanying drawings, the same components are represented by the same reference numerals. The drawings show:

[0022] Figure 1 A functional block diagram of a power extraction system for a single live wire switch according to an embodiment of the present invention is shown.

[0023] Figure 2 A circuit diagram of a power extraction system according to an embodiment of the present invention is shown.

[0024] Figure 3 A circuit diagram of a single live wire switch according to an embodiment of the present invention is shown.

[0025] Figure 4 A schematic flow chart of a method for controlling a power taking system of a single live wire switch according to an embodiment of the present invention is shown.

[0026] Figure 5 A schematic diagram of a process of adjusting the electric energy obtained by a power taking module from a power source according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other solutions obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not listed or inherent to these processes, methods, products or devices.

[0029] Figure 1 A functional block diagram of a power taking system 10 for a single live wire switch according to an embodiment of the present invention is shown. The power taking system 10 according to this embodiment is connected to a wireless controller 20 and an electrical device 30, wherein the wireless controller 20 is used to control a switch module for changing the operating state of the electrical device 30. The power taking system 10 is connected in series with the switch module and the electrical device 30. The wireless controller 20 controls the current / voltage of the load by controlling the switch module to realize functions such as on, off, and dimming. For example, the switch module is a relay, a TRIAC thyristor, a MOS tube, and the like. For example, the wireless controller 20 is implemented as a microprocessor or a module with a radio frequency function (for example, a WIFI radio frequency communication module, a BLE radio frequency communication module, a Zigbee radio frequency communication module, and the like). For example, the electrical device is an LED lamp, a traditional incandescent lamp, a halogen lamp, a motor device, a household appliance, and the like. For example, in this embodiment, the electrical device is implemented as a lighting device. Preferably, the power extraction system 10 according to the embodiment of the present invention includes a power extraction module 13 and a control module 15, wherein the power extraction module 13 is connected between a power source and a wireless controller 20, wherein the power source supplies power to the wireless controller 20 and the electrical device 30. The power extraction module 13 is configured to obtain electrical energy during the full cycle of the AC power source including the positive half cycle and the negative half cycle during the power-on period of the electrical device 30, and provide the obtained electrical energy to the wireless controller 20. The control module 15 is connected to the power extraction module 13, and the control module 15 is configured to detect the energy consumption of the wireless controller 20, and according to the change of the energy consumption of the wireless controller 20, provide a control signal to the power extraction module 13 to adjust the electrical energy obtained by the power extraction module 13 from the power source. The control module 15 is also configured to detect the energy consumption of the wireless controller 20 by detecting the voltage representing the energy consumption of the wireless controller 20, and gradually adjust the duty cycle of the control signal sent to the power extraction module 13 according to the change of the detected voltage.

[0030] In the implementation of the present invention, the control module 15 determines the energy consumption of the wireless controller 20 by adopting an open-loop control logic, and controls the electric energy obtained from the power supply by the power supply module 13 according to the determined energy consumption. To this end, the control module 15 is configured to: when the detected voltage is greater than the first threshold, adjust the duty cycle of the control signal to the first predetermined duty cycle; when the detected voltage is less than the second threshold, reduce the duty cycle of the control signal from the first predetermined duty cycle to the second predetermined duty cycle, wherein the second threshold is less than the first threshold; and when the detected voltage is less than the third threshold, reduce the duty cycle of the control signal from the second predetermined duty cycle to the third predetermined duty cycle, wherein the third threshold is less than the second threshold. Preferably, the difference between the second threshold and the first threshold is equal to the difference between the third threshold and the second threshold. Moreover, in order to adjust the electric energy obtained by the power supply module 13 in a smooth and as continuous manner as possible, the control module 15 is configured to gradually adjust the duty cycle of the control signal by a predetermined amount. For example, in order to reduce the electric energy obtained by the power taking module 13 from the power source, the duty cycle of the control signal may be gradually reduced by a change of 0.5%, so that the duty cycle is reduced from 100% to 90%, or from 90% to 80%.

[0031] Figure 2 FIG. 2 shows a circuit diagram of a power supply system according to an embodiment of the present invention. Figure 2 As shown, the power taking system according to the embodiment of the present invention includes a full-bridge rectifier circuit 131 constituting a power taking module 13, a power taking load 133 and a plurality of switch units 132, and a control circuit constituting a control module 15. The power taking load 133 can be implemented as a single component or a circuit including multiple components. Figure 2 In the embodiment of FIG. 1 , the power-drawing load 133 is implemented as a single component, such as Figure 2The resistor R1 shown. In other embodiments, the power-taking load 133 may also be implemented as a circuit including multiple components. The full-bridge rectifier circuit 131 is configured to work with multiple switch units 132 to obtain electrical energy in both the positive and negative half-cycles of the AC power supply, and the full-bridge rectifier circuit 131 provides a voltage supplied to the wireless controller via the left output terminal shown in the figure, for example, the voltage is 12V. The power-taking load 133 is implemented as a first resistor R1 with a predetermined impedance, which is connected in parallel with the full-bridge rectifier circuit 131 and is configured to provide an impedance connected in series with the electrical device. The multiple switch units 132 preferably include two MOS tubes Q1 and Q2 connected in reverse series, wherein the source of the first MOS tube Q1 is connected to the source of the second MOS tube Q2, and the first diode D1, the second resistor R2 and the first capacitor C1 are connected in parallel with each other between the first MOS tube Q1 and the second MOS tube Q2. The power-taking module 13 is connected to the control circuit of the control module 15 via a third resistor R3. The control circuit includes two transistors Q3 and Q4 connected in reverse series, wherein the first transistor Q3 is implemented as an NPN transistor, the second transistor Q4 is implemented as a PNP transistor, and the emitter of the first transistor Q3 is connected to the emitter of the second transistor Q4. The control circuit also includes a fourth resistor R4 and a third MOS tube Q5, wherein the fourth resistor R4 is connected to the base of the first transistor Q3, the base of the second transistor Q4 and the drain of the third MOS tube Q5. The gate of the third MOS tube Q5 is connected to the gates of the first MOS tube Q1 and the second MOS tube Q2 via the fifth resistor R5, for providing a control signal to the two MOS tubes connected in reverse series. In addition, a sixth resistor R6, a second capacitor C2 and a third transistor Q6 connected in parallel are provided between the third MOS tube Q5 and the fifth resistor R5.

[0032] Figure 3 FIG. 2 shows a circuit diagram of a single live wire switch according to an embodiment of the present invention. Figure 3 In the illustrated embodiment, the single live wire switch is installed in a wire box arranged in the wall, as shown by the dotted line box, including the above Figure 1 and Figure 2 The power taking system 10, the power converter 40 and the wireless controller 20 described in the embodiment of the present invention are connected to the power taking system 10, the power converter 40 and the wireless controller 20 as shown in FIG. Figure 3Between the live wire Lin and the neutral wire Nin shown. For example, in this embodiment, the power converter 40 is a switching power supply, a linear power supply, etc. During the period when the electrical device is powered on, the power supply system 10 obtains electrical energy from the live wire Lin, and the power converter is configured to convert the voltage output by the power supply system 10 into a supply voltage provided to the wireless controller 20, for example, the 12V output voltage output by the power supply system is stepped down to a 3.3V supply voltage supplied to the wireless controller 20. The wireless controller 20 is configured to obtain electrical energy from the supply voltage to control the operating state of the electrical device via a dimmer or a switch, such as turning on or off a lighting device, or adjusting the lighting brightness of the lighting device. The single live wire switch may also include a switch module 50, such as a dimmer or a switch, which may be implemented as a TRIAC, a MOS tube or a relay. In addition, for example, the wireless controller 20 is also configured to receive a wireless control signal from a user or a mobile terminal to control the operating state of the electrical device according to the requirements of the user or the mobile terminal. In this embodiment, when the power taking system 10 can obtain more power according to the energy consumption of the wireless controller 20, the dimmer of the single live wire switch can be designed to have more functions, such as providing cloud services, voice control, edge computing or various sensor functions. Figure 3 The single live wire switch shown in the embodiment may also include an AC / DC converter 60 for drawing power when the electrical device is turned off, converting the AC voltage of the live wire into a voltage that can be provided to the power converter, thereby powering the wireless controller 20.

[0033] Figure 4A flow chart of a method for controlling a power-taking system of a single live wire switch according to an embodiment of the present invention is shown. The control method according to an embodiment of the present invention includes: step S101, during the period when the electrical device is powered on, the power-taking module obtains electric energy from the power supply and provides the obtained electric energy to the wireless controller; and step S103, the control module detects the energy consumption of the wireless controller, and according to the change of the energy consumption of the wireless controller, provides a control signal to the power-taking module to adjust the electric energy obtained by the power-taking module from the power supply. Preferably, in step S103, the control module detects the energy consumption of the wireless controller, including the control module detecting the voltage representing the energy consumption of the wireless controller, and gradually adjusting the duty cycle of the control signal according to the change of the detected voltage. Moreover, in step S103, gradually adjusting the duty cycle of the control signal includes gradually reducing the duty cycle of the control signal by a predetermined amount, for example, gradually reducing the duty cycle of the control signal by a change of 0.5%, so that its duty cycle is reduced from 100% to 90%, or from 90% to 80%. Further, in step S103, gradually adjusting the duty cycle of the control signal includes: when the detected voltage is greater than a first threshold value, the control module adjusts the duty cycle of the control signal to a first predetermined duty cycle; when the detected voltage is less than a second threshold value, the control module reduces the duty cycle of the control signal from the first predetermined duty cycle to a second predetermined duty cycle, wherein the second threshold value is less than the first threshold value; and when the detected voltage is less than a third threshold value, the control module reduces the duty cycle of the control signal from the second predetermined duty cycle to a third predetermined duty cycle, wherein the third threshold value is less than the second threshold value.

[0034] Figure 5 FIG. 2 is a schematic diagram showing a process flow of adjusting the electric energy obtained by the power taking module from the power supply according to an embodiment of the present invention. Figure 5As shown, when the electrical equipment is powered on, the control module of the power taking system starts to provide a control signal with a duty cycle of 99% to the power taking module in a pulse width modulation (PWM) mode with a pulse frequency of 2KHz. Then the control module uses the ADC analog-to-digital converter to detect or sample the voltage representing the energy consumption of the wireless controller. If it is detected that the voltage is greater than a predetermined threshold voltage of 12V, the duty cycle of the control signal is adjusted to 100% so that the power supply system can obtain electrical energy as much as possible; if the voltage is detected to be less than 12V but greater than 10V, the duty cycle of the control signal is reduced to 90%, wherein, for example, the duty cycle is smoothly reduced from 100% to 90% by a predetermined amount of 0.5%; if the voltage is detected to be less than 10V but greater than 8V, the duty cycle of the control signal is reduced to 70%, wherein, for example, the duty cycle is smoothly reduced from 90% to 70% by a predetermined amount of 0.5%; if the voltage is detected to be less than 8V but greater than 6V, the duty cycle of the control signal is reduced to 40%, wherein, for example, the duty cycle is smoothly reduced from 70% to 40% by a predetermined amount of 0.5%; if the voltage is detected to be less than 6V, the duty cycle of the control signal is gradually reduced from 40% to 1% by a predetermined decrement of 0.5% to minimize power supply.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power supply system for a single live wire switch, wherein: The power taking system is connected to the electrical equipment and the wireless controller, and the wireless controller controls a switch module for changing the operating state of the electrical equipment. The power taking system includes: a power taking module connected between a power source and the wireless controller, the power source supplies power to the wireless controller and the electrical device, wherein the power taking module is configured to obtain electrical energy from the power source while the electrical device is powered on, and provide the obtained electrical energy to the wireless controller; and A control module is connected to the power taking module and is configured to detect the energy consumption of the wireless controller and provide a control signal to the power taking module according to the change of the energy consumption of the wireless controller to adjust the electric energy obtained by the power taking module from the power supply, wherein the control module detects the energy consumption of the wireless controller including detecting a voltage representing the energy consumption of the wireless controller and gradually adjusts the duty cycle of the control signal according to the change of the detected voltage.

2. The power extraction system according to claim 1, characterized in that: The control module is configured to: When the detected voltage is greater than a first threshold, adjusting the duty cycle of the control signal to a first predetermined duty cycle; When the detected voltage is less than a second threshold, reducing the duty cycle of the control signal from the first predetermined duty cycle to a second predetermined duty cycle, wherein the second threshold is less than the first threshold; and When the detected voltage is less than a third threshold, the duty cycle of the control signal is reduced from the second predetermined duty cycle to a third predetermined duty cycle, wherein the third threshold is less than the second threshold.

3. The power extraction system according to claim 2, characterized in that: The control module is configured to step down the duty cycle of the control signal by a predetermined amount.

4. The power extraction system according to claim 1, characterized in that: The power taking module comprises: An electrical load is connected in series with the electrical device.

5. The power extraction system according to claim 4, characterized in that: The power taking module also includes: A plurality of switch units are connected in parallel with the power taking load, wherein the plurality of switch units are switched according to the control signal.

6. The power extraction system according to claim 5, characterized in that: The power taking module also includes: The rectifier circuit is configured to cooperate with the plurality of switch units to obtain electrical energy during the positive half cycle and the negative half cycle of the power supply.

7. The power extraction system according to claim 5, characterized in that: The plurality of switch units include two MOS tubes connected in reverse series.

8. The power extraction system according to any one of claims 1 to 7, characterized in that: The electrical device is a lighting device.

9. A single live wire switch, characterized in that: include: The power extraction system according to any one of claims 1 to 8; A power converter, configured to convert the voltage output by the power taking system into a supply voltage; as well as The wireless controller is configured to obtain electrical energy from the supply voltage to control the operating state of the electrical device.

10. A method for controlling a power supply system of a single live wire switch, wherein: The power taking system is connected to the electrical equipment and the wireless controller, the wireless controller controls the switch module for changing the operating state of the electrical equipment, and the power taking system includes a power taking module and a control module, and is characterized in that the method includes: When the electrical device is powered on, the power taking module obtains electric energy from a power source and provides the obtained electric energy to the wireless controller; and The control module detects the energy consumption of the wireless controller, and provides a control signal to the power taking module according to the change of the energy consumption of the wireless controller, so as to adjust the electric energy obtained by the power taking module from the power supply, wherein the control module detects the energy consumption of the wireless controller including: the control module detects the voltage representing the energy consumption of the wireless controller, and gradually adjusts the duty cycle of the control signal according to the change of the detected voltage.

11. The method according to claim 10, characterized in that Stepwise adjusting the duty cycle of the control signal includes: When the detected voltage is greater than a first threshold, the control module adjusts the duty cycle of the control signal to a first predetermined duty cycle; When the detected voltage is less than a second threshold, the control module reduces the duty cycle of the control signal from the first predetermined duty cycle to a second predetermined duty cycle, wherein the second threshold is less than the first threshold; and When the detected voltage is less than a third threshold, the control module reduces the duty cycle of the control signal from the second predetermined duty cycle to a third predetermined duty cycle, wherein the third threshold is less than the second threshold.

12. The method according to claim 10, characterized in that Stepwise adjusting the duty cycle of the control signal includes: The duty cycle of the control signal is gradually reduced by a predetermined amount.

13. A storage medium, characterized in that The storage medium includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the method according to any one of claims 10 to 12.

14. A processor, characterized in that The processor is configured to run a program, wherein the program executes the method according to any one of claims 10 to 12 when running.

15. A computer program product, characterized in that The computer program product is tangibly stored on a computer readable medium and comprises computer executable instructions which, when executed, cause at least one processor to perform the method according to any one of claims 10 to 12.

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