Self-powered switch control circuit
The self-powered switch control circuit solves the problems of battery dependence and single signal in traditional switch control circuits by using a press-to-generate unit and a signal switching module. It achieves environmental protection and diversified control, and improves the applicability and environmental benefits of the switch control circuit.
Patent Information
- Application Number
- CN202520816235.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-05-01
- Estimated Expiration
- 2035-04-27
AI Technical Summary
Traditional switch control circuits rely on battery power, which results in limited power and frequent replacements, increasing costs and causing environmental pollution from discarded batteries. In addition, the limited signal types make it difficult to meet diverse control needs.
It adopts a self-powered switch control circuit, which converts mechanical energy into electrical energy by pressing the power generation unit. Combined with power management and signal generation circuits, it achieves a stable power supply and changes the signal type by switching modules to meet the control needs of different devices and scenarios.
It achieves self-powered operation, avoiding the hassle of battery replacement and the pollution from discarded batteries, improving the environmental benefits and versatility of the switch control circuit, and meeting diverse control needs.
Smart Images
Figure CN224191651U_ABST
Abstract
Description
A self-powered switch control circuit Technical Field
[0001] This application relates to the field of switch product technology, and in particular to a self-powered switch control circuit. Background Technology
[0002] In fields such as smart homes and industrial automation, traditional switch control circuits typically rely on battery power, which brings a series of problems. Firstly, batteries have limited capacity and require regular replacement, increasing operating costs and potentially causing equipment malfunction if replacement is not timely, especially in scenarios where frequent battery replacement is difficult. Furthermore, improper disposal of discarded batteries can pollute the environment. Secondly, traditional switch control circuits offer only a single signal type, making it difficult to meet diverse control needs. For example, different devices or scenarios may require different types of signals to achieve precise control. Summary of the Invention
[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a self-powered switch control circuit, which can improve the environmental benefits of products and enhance the versatility of switch control through self-powering.
[0004] This application provides a self-powered switch control circuit, including:
[0005] Press-to-generate unit;
[0006] A power management circuit, comprising a rectifier module and a power management chip, wherein the input terminal of the rectifier module is connected to the output terminal of the press-to-generate unit, and is used to convert the AC voltage generated by the press-to-generate unit into DC voltage; the output terminal of the rectifier module is connected to the input terminal of the power management chip.
[0007] A signal generation circuit is provided, comprising a switching module and a wireless radio frequency (RF) transmitter chip. The input and control terminals of the RF transmitter chip are respectively connected to the output terminal of the power management chip and the switching module. The switching module is used to change the signal type emitted by the RF output terminal of the RF transmitter chip.
[0008] The self-powered switch control circuit according to the embodiments of this application has at least the following beneficial effects: When the user presses the switch, the press-generated power unit converts the mechanical energy generated by the press into AC electrical energy, and the rectifier module converts the AC voltage generated by the press-generated power unit into DC voltage. The output terminal of the rectifier module is connected to the input terminal of the power management chip to ensure a stable DC power supply. The input terminal of the wireless radio frequency transmitter chip in the signal generation circuit is connected to the output terminal of the power management chip to obtain a stable power supply. Its control terminal is connected to the switching module. The switching module can change the signal type emitted by the radio frequency output terminal of the wireless radio frequency transmitter chip according to the user's needs, thereby realizing diversified signal output. The self-powered switch control circuit converts mechanical energy into electrical energy through the press-generated power unit, realizing self-powering, avoiding the trouble and cost of periodically replacing batteries, and also reducing the pollution of the environment by discarded batteries, improving the environmental benefits of the product; at the same time, by changing the signal type through the switching module, it can meet the diversified control needs of different devices and scenarios, improving the versatility and applicability of the switch control circuit.
[0009] According to some embodiments of this application, the control terminal of the wireless radio frequency transmitting chip includes multiple function selection pins, and the switching module includes at least one switching unit, wherein one of the function selection pins is grounded, and some of the function selection pins are grounded through corresponding switching units.
[0010] According to some embodiments of this application, the switching unit includes at least one switching element.
[0011] According to some embodiments of this application, the signal generation circuit includes an impedance matching module, the power supply isolation terminal of the impedance matching module is connected to the output terminal of the power management circuit, the input terminal of the impedance matching module is connected to the radio frequency output terminal of the wireless radio frequency transmitting chip, and the output terminal of the impedance matching module is used to connect to an external transmitting antenna.
[0012] According to some embodiments of this application, the ground terminal of the wireless radio frequency transmitting chip is grounded and connected to the output terminal of the power management circuit through a first capacitor, and the output terminal of the impedance matching module is grounded through a second capacitor.
[0013] According to some embodiments of this application, the impedance matching module includes a first inductor, a second inductor, and a third capacitor. One end of the first inductor is connected to the output terminal of the power management circuit, and the other end is connected to one end of the third capacitor and the radio frequency output terminal of the wireless radio frequency transmitter chip. The other end of the third capacitor is connected to one end of the second inductor, and the other end of the second inductor is used to connect to an external transmitting antenna.
[0014] According to some embodiments of this application, the rectifier module includes a first diode, a second diode, a third diode, a fourth diode, and a fifth diode. The first output terminal of the press-to-generate unit is connected to the anode of the first diode and the cathode of the second diode, respectively. The second output terminal of the press-to-generate unit is connected to the anode of the third diode and the cathode of the fourth diode, respectively. The cathodes of the first diode and the third diode are connected to the input terminal of the power management chip. The anodes of the second diode and the fourth diode are connected to the ground terminal of the power management chip. The anode of the fifth diode is connected between the anode of the second diode and the cathode of the fourth diode, and the cathode is connected to the enable terminal of the power management chip.
[0015] According to some embodiments of this application, the power management circuit further includes a first filtering module, which includes a first resistor, a second resistor, and a fourth capacitor. The cathode of the fifth diode is connected to the enable terminal of the power management chip through the first resistor. The cathode of the fifth diode and the first resistor are grounded through the fourth capacitor. The first resistor and the enable terminal of the power management chip are grounded through the second resistor.
[0016] According to some embodiments of this application, the power management circuit further includes a second filtering module, which includes a fifth capacitor, a polarized capacitor, and a sixth diode. One end of the fifth capacitor, the positive terminal of the polarized capacitor, and the negative terminal of the sixth diode are respectively connected between the output terminal of the rectifier module and the input terminal of the power management chip. The other end of the fifth capacitor, the negative terminal of the polarized capacitor, and the anode terminal of the sixth diode are respectively grounded.
[0017] According to some embodiments of this application, the power management circuit further includes a third filtering module, which includes a third inductor, a sixth capacitor, and a third resistor. The output terminal of the power management chip is connected to the input terminal of the wireless radio frequency transmitter chip through the third inductor. One end of the sixth capacitor and the third resistor are respectively connected between the third inductor and the wireless radio frequency transmitter chip, and the other end is respectively grounded. The output terminal of the power management chip is also connected to the feedback terminal of the power management chip through a fourth resistor, and the feedback terminal of the power management chip is grounded through a fifth resistor.
[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0019] Additional aspects and advantages of this application will become apparent and readily understood in conjunction with the following description of the embodiments, in which:
[0020] Figure 1 is a circuit block diagram of a self-powered switch control circuit provided in some embodiments of this application;
[0021] Figure 2 is a circuit diagram of a self-powered switch control circuit provided in some embodiments of this application. Detailed Implementation
[0022] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0023] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0024] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.
[0025] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.
[0026] In fields such as smart homes and industrial automation, traditional switch control circuits typically rely on battery power, which brings a series of problems. Firstly, batteries have limited capacity and require regular replacement, increasing operating costs and potentially causing equipment malfunction if replacement is not timely, especially in scenarios where frequent battery replacement is difficult. Furthermore, improper disposal of discarded batteries can pollute the environment. Secondly, traditional switch control circuits offer only a single signal type, making it difficult to meet diverse control needs. For example, different devices or scenarios may require different types of signals to achieve precise control.
[0027] Based on this, this application provides a self-powered switch control circuit to solve the above-mentioned technical problems. The technical solution provided by this application will be described in detail below.
[0028] Referring to Figure 1, this application provides a self-powered switch control circuit, including: a press-to-generate unit, a power management circuit, and a signal generation circuit. The power management circuit includes a rectifier module and a power management chip U2. The input terminal of the rectifier module is connected to the output terminal of the press-to-generate unit and is used to convert the AC voltage generated by the press-to-generate unit into DC voltage. The output terminal of the rectifier module is connected to the input terminal of the power management chip U2. The signal generation circuit includes a switching module and a wireless radio frequency transmitter chip U1. The input terminal and control terminal of the wireless radio frequency transmitter chip U1 are respectively connected to the output terminal of the power management chip U2 and the switching module. The switching module is used to change the signal type transmitted by the radio frequency output terminal of the wireless radio frequency transmitter chip U1.
[0029] When the user presses the switch, the press-generator unit converts the mechanical energy generated by the press into AC electrical energy. The rectifier module converts the AC voltage generated by the press-generator unit into DC voltage. The output of the rectifier module is connected to the input of the power management chip U2 to ensure a stable DC power supply. The input of the wireless radio frequency transmitter chip U1 in the signal generation circuit is connected to the output of the power management chip U2 to obtain a stable power supply. Its control terminal is connected to the switching module. The switching module can change the signal type emitted by the radio frequency output of the wireless radio frequency transmitter chip U1 according to the user's needs, thereby realizing diversified signal output. The self-powered switch control circuit converts mechanical energy into electrical energy through the press-generator unit, realizing self-powering and avoiding the trouble and cost of periodically replacing batteries. It also reduces the pollution of waste batteries to the environment and improves the environmental benefits of the product. At the same time, by changing the signal type through the switching module, it can meet the diversified control needs of different devices and scenarios, improving the versatility and applicability of the switch control circuit.
[0030] Referring to Figure 2, it can be understood that the control terminal of the wireless RF transmitter chip U1 includes multiple function selection pins, and the switching module includes at least one switching unit. One function selection pin is grounded, and some function selection pins are grounded through corresponding switching units. The control terminal of the wireless RF transmitter chip U1 typically has multiple function selection pins. Different combinations of these pin levels determine the chip's operating mode and the type of signal transmitted by the RF output. By setting up a switching module and grounding some function selection pins through corresponding switching units (e.g., function selection pins K1 and K3 of the wireless RF transmitter chip U1 are grounded through their corresponding switching units, while one function selection pin is fixed to ground, such as function selection pin K2), a specific implementation method for changing the signal type is provided. When the switching unit is closed, the corresponding function selection pin is grounded and exhibits a low level; when the switching unit is open, the pin is floating. By controlling the on / off combinations of different switching units, the level combinations of the function selection pins can be changed, thereby controlling the wireless RF transmitter chip U1 to transmit different types of signals.
[0031] Referring to Figure 2, it can be understood that the switching unit includes at least one switching element. For example, in a switching unit connected to the function selection pin K1 of the wireless RF transmitter chip U1, there is a first switching element S1 and a second switching element S2. That is, the user can make the function selection pin K1 present a low level by closing either the first switching element S1 or the second switching element S2, thereby changing the level combination of the function selection pin and controlling the wireless RF transmitter chip U1 to transmit different types of signals. This provides a redundancy mechanism for control signal types. When one switching element fails, the user can still control the level of the function selection pin through the other switching element, ensuring the normal operation of the circuit. Furthermore, in actual products, the first switching element S1 and the second switching element S2 can be placed at relatively far apart, improving the flexibility of product application.
[0032] Referring to Figure 1, it can be understood that the signal generation circuit includes an impedance matching module. The power supply isolation terminal of the impedance matching module is connected to the output terminal of the power management circuit, the input terminal of the impedance matching module is connected to the RF output terminal of the wireless RF transmitter chip U1, and the output terminal of the impedance matching module is used to connect to an external transmitting antenna. During signal transmission, different circuit modules and devices have different impedance characteristics. The signal output by the wireless RF transmitter chip U1 has its specific output impedance, while the transmitting antenna also has its own input impedance. If the impedances of the two are mismatched, the signal will be reflected during transmission, and some signal energy cannot be effectively transmitted to the transmitting antenna, resulting in signal loss. The function of the impedance matching module is to adjust the impedance of the signal transmission path so that the output impedance of the wireless RF transmitter chip U1 matches the input impedance of the transmitting antenna, ensuring that the signal can be efficiently transmitted from the transmitter chip to the transmitting antenna.
[0033] Referring to Figure 2, it can be understood that the ground terminal of the wireless RF transmitter chip U1 is grounded and connected to the output terminal of the power management circuit through the first capacitor C1, while the output terminal of the impedance matching module is grounded through the second capacitor C2. The grounding of the wireless RF transmitter chip U1 and its connection to the output terminal of the power management circuit through the first capacitor C1 allows the first capacitor C1 to filter the DC power output from the power management circuit, thus providing a cleaner and more stable DC power supply for the power management chip U2. During signal transmission, especially in the RF band, some high-frequency noise and spurious signals may be introduced. The output terminal of the impedance matching module is grounded through the second capacitor C2, which bypasses these high-frequency components to ground, preventing them from being transmitted to the transmitting antenna along with the signal, thereby ensuring a cleaner signal output from the transmitting antenna.
[0034] Referring again to Figure 2, the impedance matching module includes a first inductor L1, a second inductor L2, and a third capacitor C3. One end of the first inductor L1 is connected to the output of the power management circuit, and the other end is connected to one end of the third capacitor C3 and the RF output of the wireless RF transmitter chip U1. The other end of the third capacitor C3 is connected to one end of the second inductor L2, and the other end of the second inductor L2 is used to connect to an external transmitting antenna. The first inductor L1 and the third capacitor C3 form an LC circuit, which can change the impedance of the signal transmission path to make it as close as possible to the input impedance of the transmitting antenna at the operating frequency, thus achieving impedance matching. The second inductor L2, in conjunction with the third capacitor C3, further fine-tunes the impedance matching effect, allowing the signal output from the wireless RF transmitter chip U1 to be transmitted to the transmitting antenna with minimal reflection and loss. Through impedance matching, signal reflection during transmission is reduced, allowing more signal energy to be transmitted from the wireless RF transmitter chip U1 to the transmitting antenna. This improves signal transmission efficiency and enhances the strength and quality of the transmitted signal.
[0035] Referring to Figure 2, it can be understood that the rectifier module includes a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, and a fifth diode D5. The first output terminal of the press-to-generate unit is connected to the anode of the first diode D1 and the cathode of the second diode D2, respectively. The second output terminal of the press-to-generate unit is connected to the anode of the third diode D3 and the cathode of the fourth diode D4, respectively. The cathodes of the first diode D1 and the third diode D3 are connected to the input terminal of the power management chip U2. The anodes of the second diode D2 and the fourth diode D4 are connected to the ground terminal of the power management chip U2. The anode of the fifth diode D5 is connected between the anode of the second diode D2 and the cathode of the fourth diode D4, and the cathode is connected to the enable terminal of the power management chip U2.
[0036] A full-wave rectifier bridge is formed by diodes D1, D2, D3, and D4. When the push-to-generate unit generates AC voltage, during the positive half-cycle of the AC voltage, the first output terminal of the push-to-generate unit is positive and the second output terminal is negative. At this time, diode D1 is turned on, and diode D3 is turned off. Current flows from the first output terminal through diode D1 to the input terminal of the power management chip U2. Simultaneously, diode D2 is turned off and diode D4 is turned on, forming a current loop. During the negative half-cycle of the AC voltage, the first output terminal of the push-to-generate unit is negative and the second output terminal is positive. At this time, diode D3 is turned on, and diode D1 is turned off. Current flows from the second output terminal through diode D3 to the input terminal of the power management chip U2. Simultaneously, diode D4 is turned off and diode D2 is turned on, again forming a current loop. In this way, the AC voltage generated by the push-to-generate unit is converted into DC voltage, providing a stable DC input to the power management chip U2.
[0037] The anode of the fifth diode D5 is connected between the anode of the second diode D2 and the cathode of the fourth diode D4, and the cathode is connected to the enable terminal of the power management chip U2. When the power generation unit generates sufficient voltage, the fifth diode D5 conducts, transmitting an enable signal to the enable terminal of the power management chip U2, thus enabling the power management chip U2 to start working. This means that the power management chip U2 is only activated when the power generation unit generates a valid voltage, preventing the power management chip U2 from consuming unnecessary power when there is no valid input.
[0038] Referring to Figures 1 and 2, it can be understood that the power management circuit also includes a first filtering module. This first filtering module includes a first resistor R1, a second resistor R2, and a fourth capacitor C4. The cathode of the fifth diode D5 is connected to the enable terminal of the power management chip U2 through the first resistor R1. The cathode of the fifth diode D5 and the first resistor R1 are grounded through the fourth capacitor C4. The first resistor R1 and the enable terminal of the power management chip U2 are grounded through the second resistor R2. The first resistor R1 and the second resistor R2 form a voltage divider circuit. After the fifth diode D5 is turned on, the enable signal is divided by the first resistor R1 and the second resistor R2 and then applied to the enable terminal of the power management chip U2. By appropriately selecting the resistance values of the first resistor R1 and the second resistor R2, the voltage level of the enable terminal can be adjusted to meet the level requirements of the power management chip U2 for the enable signal. The fourth capacitor C4 is connected between the cathode of the fifth diode D5 and ground, acting as a filter to smooth the waveform of the enable signal, making the signal transmitted to the enable terminal of the power management chip U2 more stable and pure.
[0039] Referring again to Figures 1 and 2, it can be understood that the power management circuit also includes a second filtering module. This second filtering module includes a fifth capacitor C5, a polarized capacitor Cr, and a sixth diode D6. One end of the fifth capacitor C5, the positive terminal of the polarized capacitor Cr, and the negative terminal of the sixth diode D6 are connected between the output terminal of the rectifier module and the input terminal of the power management chip U2, respectively. The other end of the fifth capacitor C5, the negative terminal of the polarized capacitor Cr, and the anode terminal of the sixth diode D6 are grounded. The fifth capacitor C5 is connected in parallel between the input terminal of the power management chip U2 and ground, primarily used to filter out high-frequency noise and bypass high-frequency ripple in the power supply to ground, making the voltage input to the power management chip U2 cleaner. The polarized capacitor Cr is used to filter out low-frequency ripple and store energy. When the output voltage of the rectifier module fluctuates, the polarized capacitor Cr can release or absorb energy to maintain the stability of the input voltage of the power management chip U2, which is particularly suitable for scenarios where the output power of the power generation unit is unstable. When the output voltage polarity is reversed due to a fault in the rectifier module or external circuit, the sixth diode D6 will conduct in the forward direction, clamping the reverse voltage to ground potential and preventing reverse current from flowing into the power management chip U2. Through multiple mechanisms of "filtering + energy storage + protection", the stability, anti-interference capability and safety of the power management circuit are significantly improved, making it especially suitable for scenarios with unstable energy sources and high reliability requirements in self-powered systems.
[0040] Referring again to Figures 1 and 2, it can be understood that the power management circuit also includes a third filtering module. The third filtering module includes a third inductor L3, a sixth capacitor C6, and a third resistor R3. The output terminal of the power management chip U2 is connected to the input terminal of the wireless radio frequency transmitter chip U1 through the third inductor L3. One end of the sixth capacitor C6 and the third resistor R3 are respectively connected between the third inductor L3 and the wireless radio frequency transmitter chip U1, and the other end is grounded respectively. The output terminal of the power management chip U2 is also connected to the feedback terminal of the power management chip U2 through the fourth resistor, and the feedback terminal of the power management chip U2 is grounded through the fifth resistor.
[0041] The third inductor, L3, impedes current changes, further filtering and storing energy from the DC voltage output by the power management chip U2. When power output ripple or current fluctuations exist, L3 smooths current changes, reducing power supply noise's impact on the wireless RF transmitter chip U1 and providing a more stable power supply. The sixth capacitor, C6, is connected between L3 and U1 and grounded. It filters out high-frequency noise, ensuring a cleaner power supply to U1. Simultaneously, it works with resistor R3 to dissipate oscillation energy generated in the circuit, preventing instability and ensuring stable power supply.
[0042] The output of power management chip U2 is connected to the feedback terminal via a fourth resistor, and the feedback terminal is grounded via a fifth resistor. The main function of this feedback circuit is to allow power management chip U2 to monitor its output voltage in real time. Power management chip U2 adjusts its output based on the voltage value at the feedback terminal to ensure that the output voltage remains stable within the set range. When the output voltage changes, the voltage at the feedback terminal also changes accordingly. Power management chip U2 adjusts its internal switching control signal based on this change, thereby restoring the output voltage to a stable value.
[0043] The third filtering module and feedback circuit work together to significantly improve the stability of the output voltage of the power management chip U2. A stable power supply is crucial for the wireless RF transmitter chip U1, as RF chips are highly sensitive to power fluctuations. Unstable power can cause changes in the frequency, amplitude, and phase of the RF signal, thus affecting signal transmission quality and distance. Providing a stable power supply ensures the normal operation of the wireless RF transmitter chip U1, improving signal transmission quality and reliability.
[0044] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.
Claims
1. A self-powered switch control circuit, characterized in that, include: Press-to-generate unit; A power management circuit includes a rectifier module and a power management chip. The input terminal of the rectifier module is connected to the output terminal of the press-to-generate unit, and is used to convert the AC voltage generated by the press-to-generate unit into DC voltage. The output terminal of the rectifier module is connected to the input terminal of the power management chip. A signal generation circuit includes a switching module and a wireless radio frequency (RF) transmitter chip. The input terminal and control terminal of the RF transmitter chip are respectively connected to the output terminal of the power management chip and the switching module. The switching module is used to change the signal type emitted by the RF output terminal of the RF transmitter chip.
2. The self-powered switch control circuit according to claim 1, characterized in that, The control terminal of the wireless radio frequency transmitter chip includes multiple function selection pins, and the switching module includes at least one switching unit, one of the function selection pins is grounded, and some of the function selection pins are grounded through the corresponding switching units.
3. The self-powered switch control circuit according to claim 2, characterized in that, The switching unit includes at least one switching element.
4. The self-powered switch control circuit according to claim 1, characterized in that, The signal generation circuit includes an impedance matching module. The power supply isolation terminal of the impedance matching module is connected to the output terminal of the power management circuit. The input terminal of the impedance matching module is connected to the radio frequency output terminal of the wireless radio frequency transmitter chip. The output terminal of the impedance matching module is used to connect to an external transmitting antenna.
5. The self-powered switch control circuit according to claim 4, characterized in that, The ground terminal of the wireless radio frequency transmitter chip is grounded and connected to the output terminal of the power management circuit through a first capacitor, while the output terminal of the impedance matching module is grounded through a second capacitor.
6. The self-powered switch control circuit according to claim 4, characterized in that, The impedance matching module includes a first inductor, a second inductor, and a third capacitor. One end of the first inductor is connected to the output terminal of the power management circuit, and the other end is connected to one end of the third capacitor and the radio frequency output terminal of the wireless radio frequency transmitter chip. The other end of the third capacitor is connected to one end of the second inductor, and the other end of the second inductor is used to connect to an external transmitting antenna.
7. The self-powered switch control circuit according to claim 1, characterized in that, The rectifier module includes a first diode, a second diode, a third diode, a fourth diode, and a fifth diode. The first output terminal of the push-to-power generation unit is connected to the anode of the first diode and the cathode of the second diode, respectively. The second output terminal of the push-to-power generation unit is connected to the anode of the third diode and the cathode of the fourth diode, respectively. The cathodes of the first and third diodes are connected to the input terminal of the power management chip. The anodes of the second and fourth diodes are connected to the ground terminal of the power management chip. The anode of the fifth diode is connected between the anode of the second diode and the cathode of the fourth diode, and the cathode is connected to the enable terminal of the power management chip.
8. The self-powered switch control circuit according to claim 7, characterized in that, The power management circuit further includes a first filtering module, which includes a first resistor, a second resistor, and a fourth capacitor. The cathode of the fifth diode is connected to the enable terminal of the power management chip through the first resistor. The cathode of the fifth diode and the first resistor are grounded through the fourth capacitor. The first resistor and the enable terminal of the power management chip are grounded through the second resistor.
9. The self-powered switch control circuit according to claim 1, characterized in that, The power management circuit further includes a second filtering module, which includes a fifth capacitor, a polarized capacitor, and a sixth diode. One end of the fifth capacitor, the positive terminal of the polarized capacitor, and the negative terminal of the sixth diode are respectively connected between the output terminal of the rectifier module and the input terminal of the power management chip. The other end of the fifth capacitor, the negative terminal of the polarized capacitor, and the anode terminal of the sixth diode are respectively grounded.
10. The self-powered switch control circuit according to claim 1, characterized in that, The power management circuit further includes a third filtering module, which includes a third inductor, a sixth capacitor, and a third resistor. The output terminal of the power management chip is connected to the input terminal of the wireless radio frequency transmitter chip through the third inductor. One end of the sixth capacitor and the third resistor are respectively connected between the third inductor and the wireless radio frequency transmitter chip, and the other end is respectively grounded. The output terminal of the power management chip is also connected to the feedback terminal of the power management chip through a fourth resistor, and the feedback terminal of the power management chip is grounded through a fifth resistor.