An adaptive power supply circuit and controller thereof

Abstract

The utility model discloses a kind of self-adaptive power supply circuit and its controller, comprising: identification unit, including first detection pipe, second detection pipe and third detection pipe, the input end of first detection pipe is connected with zero line, the input end of second detection pipe is connected with fire line, the input end of third detection pipe is connected with the power output end of self-adaptive power supply circuit;Power supply unit, including load power supply control circuit and system power supply circuit, first switch tube and second switch tube are connected between fire line and power output end in series;Processing unit is connected with first switch tube by first control pipe, processing unit is connected with second switch tube by second control pipe.By setting identification unit and processing unit, identification unit can accurately identify whether single fire power supply, to transmit corresponding identification signal to processing unit, processing unit adaptively controls first switch tube and second switch tube to open or close, to make power output end can adaptively zero fire power supply or single fire power supply and output stable voltage.

Description

Technical Field

[0001] This utility model relates to the field of power supply circuit technology, and in particular to an adaptive power supply circuit and its controller. Background Technology

[0002] Single-wire power supply is a technology that uses a smart switch connected in series with the light fixture to form a circuit, continuously drawing current in both the off and on states. This technology utilizes the live wire as the sole power supply circuit, eliminating the need for an additional neutral wire to power the smart switch control circuit. Currently, some home wiring still uses a live-neutral power supply method, or a neutral wire is pre-installed in the switch box, making it difficult for users to quickly determine whether to choose a single-wire or neutral-wire switch when purchasing power switches. Most existing power switches only support either single-wire or neutral-wire power supply; if the user selects the wrong power supply method, the switch will malfunction. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this invention is to provide an adaptive power supply circuit and its controller, which can automatically and stably output voltage according to the power supply status of the live and neutral wires, thereby improving the compatibility and operational stability of the adaptive power supply circuit.

[0004] The technical solution adopted by this utility model to solve its problem is: In a first aspect, this application discloses an adaptive power supply circuit, comprising: an identification unit including a first detection transistor Q1, a second detection transistor Q2, and a third detection transistor Q3, wherein the input terminal of the first detection transistor Q1 is connected to the neutral wire, the input terminal of the second detection transistor Q2 is connected to the live wire, and the input terminal of the third detection transistor Q3 is connected to the power supply output terminal of the adaptive power supply circuit; and a power supply unit including a load power supply control circuit and a system power supply circuit, wherein the load power supply control circuit includes a first switch transistor V1 and a second switch transistor V2, the first switch transistor V1 and the second switch transistor V2 being connected in series between the live wire and the power supply output terminal; and the system power supply circuit including a filter device and a charging capacitor CE1, wherein one end of the filter device is connected to the neutral wire, the live wire, or the power supply output terminal, and the other end of the filter device is connected to... The charging capacitor CE1 is connected to a processing unit, which is connected to the system power supply circuit, the output terminal of the first detection tube Q1, the output terminal of the second detection tube Q2, and the output terminal of the third detection tube Q3. The processing unit is also connected to a control port. The processing unit is connected to the first switch tube V1 through a first control tube Q4, and to the second switch tube V2 through a second control tube Q5. In response to the control signal received by the control port, the processing unit controls the first switch tube V1 and the second switch tube V2 to turn on or off respectively through the first control tube Q4 and the second control tube Q5 according to the output signals of the first detection tube Q1, the second detection tube Q2, and the third detection tube Q3, so as to output a stable voltage at the power supply output terminal.

[0005] The aforementioned adaptive power supply circuit has at least the following beneficial effects: By setting up an identification unit and a processing unit, the identification unit can accurately identify whether it is powered by a single wire and send the corresponding identification signal to the processing unit. The processing unit adaptively controls the first switching transistor V1 and the second switching transistor V2 to turn on or off, so that the power supply output terminal outputs a stable voltage, thereby improving the compatibility of the adaptive power supply circuit. By setting up a power supply unit and a processing unit, the power supply unit can adaptively provide a stable DC power supply to the processing unit according to the identification signal from the identification unit, thereby improving the operational stability of the adaptive power supply circuit and enhancing the user experience.

[0006] Furthermore, the load power supply control circuit also includes a first diode D1 and a second diode D2; the first diode D1 is connected in parallel with the first switching transistor V1, and the second diode D2 is connected in parallel with the second switching transistor V2. By setting the first diode D1 and the second diode D2, the processing unit can control the first switching transistor V1 and the second switching transistor V2 to turn on or off to provide positive single-cycle or negative single-cycle AC power supply, ensuring the compatibility of the adaptive power supply circuit.

[0007] Furthermore, the filtering device includes a third diode D3, a fourth diode D4, and a fifth diode D5. The anode of the third diode D3 is connected to the neutral wire, the anode of the fourth diode D4 is connected to the live wire, and the anode of the fifth diode D5 is connected to the power supply output terminal. The cathodes of the third diode D3, the fourth diode D4, and the fifth diode D5 are all connected to the charging capacitor CE1. By setting the third diode D3, the fourth diode D4, and the fifth diode D5, the filtering device can perform full-wave rectification of the mains power, enabling the charging capacitor CE1 to charge quickly and stably before supplying power to the processing unit, thus improving the operational stability of the adaptive power supply circuit.

[0008] Furthermore, the system power supply circuit also includes a voltage conversion module. The input terminal of the voltage conversion module is connected to the third diode D3, the fourth diode D4, the fifth diode D5, and the charging capacitor CE1, and the output terminal of the voltage conversion module is connected to the processing unit. By setting up the voltage conversion module, the system power supply circuit can stably output DC voltage to the processing unit, ensuring the operational stability of the adaptive power supply circuit.

[0009] Furthermore, a first voltage limiting element Z1 is provided between the power supply output terminal and the input terminal of the third detection tube Q3. By setting the first voltage limiting element Z1, the output signal of the second detection tube Q2 is delayed, causing the first switching tube V1 to turn on later, ensuring that the charging capacitor CE1 receives sufficient charging time and improving the power supply stability of the adaptive power supply circuit.

[0010] Furthermore, a second voltage limiting element Z2 is provided between the live wire and the input terminal of the second detection tube Q2. By setting the second voltage limiting element Z2, the output signal of the third detection tube Q3 can be delayed, causing the second switching tube V2 to turn on later, ensuring that the charging capacitor CE1 receives sufficient charging time and improving the power supply stability of the adaptive power supply circuit.

[0011] Furthermore, the first switching transistor V1 and the second switching transistor V2 are thyristors. Thyristors can be used as contactless switches to quickly connect or disconnect the circuit, ensuring that the first switching transistor V1 and the second switching transistor V2 can quickly switch between on and off states, so that the power supply unit can meet different power supply states and improve the compatibility of the adaptive power supply circuit.

[0012] Furthermore, the first detection transistor Q1, the second detection transistor Q2, the third detection transistor Q3, the first control transistor Q4, and the second control transistor Q5 are all transistors. Transistors are semiconductor devices that control current, amplifying weak signals into larger amplitude electrical signals, and can be used as contactless switches. The fact that the first detection transistor Q1, the second detection transistor Q2, the third detection transistor Q3, the first control transistor Q4, and the second control transistor Q5 are all transistors enables the power supply unit to respond quickly, ensuring the operational stability of the adaptive power supply circuit.

[0013] Furthermore, the control port is connected to a wired controller or a wireless controller. Triggering the control port via wired or wireless control improves the ease of use and compatibility of the adaptive power supply circuit.

[0014] A second aspect of this application is a controller that includes the adaptive power supply circuit of the first aspect.

[0015] The beneficial effects of the aforementioned controller are as follows: By setting up an identification unit and a processing unit, the identification unit can accurately identify whether it is powered by a single wire and transmit the corresponding identification signal to the processing unit. The processing unit adaptively controls the first switch V1 and the second switch V2 to turn on or off, so that the power supply output terminal outputs a stable voltage, improving the compatibility of the adaptive power supply circuit. By setting up a power supply unit and a processing unit, the power supply unit can adaptively provide a stable DC power supply to the processing unit according to the identification signal from the identification unit, improving the operational stability of the adaptive power supply circuit and enhancing the user experience. By setting up a first diode D1 and a second diode D2, the processing unit can control the first switch V1 and the second switch V2 to turn on or off to provide positive single-cycle or negative single-cycle AC power supply, ensuring the compatibility of the adaptive power supply circuit. By setting up a third diode D3, a fourth diode D4, and a fifth diode D5, the filtering devices can perform full-wave rectification of the mains power, enabling the charging capacitor CE1 to charge quickly and stably before supplying power to the processing unit, improving the working stability of the adaptive power supply circuit. By setting up a voltage conversion module, the system power supply circuit can stably output DC voltage to the processing unit, ensuring the working stability of the adaptive power supply circuit.

[0016] Additional aspects and advantages of this invention 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 the invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an adaptive power supply circuit according to an embodiment of the present invention; Figure 2 This is a circuit diagram of an adaptive power supply circuit according to an embodiment of the present invention. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of the 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 utility model, and should not be construed as limiting this utility model.

[0019] Reference Figure 1 and Figure 2 This utility model embodiment provides an adaptive power supply circuit, including: an identification unit 100, including a first detection tube Q1, a second detection tube Q2, and a third detection tube Q3, wherein the input terminal of the first detection tube Q1 is connected to the neutral wire, the input terminal of the second detection tube Q2 is connected to the live wire, and the input terminal of the third detection tube Q3 is connected to the power supply output terminal of the adaptive power supply circuit; and a power supply unit 200, including a load power supply control circuit 210 and a system power supply circuit 220, wherein the load power supply control circuit 210 includes a first switching tube V1 and a second switching tube V2, which are connected in series between the live wire and the power supply output terminal; and the system power supply circuit 220 includes a filter device and a charging capacitor CE1, wherein one end of the filter device is connected to the neutral wire, the live wire, or the power supply output terminal. The other end of the component is connected to the charging capacitor CE1; the processing unit 300 is connected to the system power supply circuit 220, the output terminal of the first detection tube Q1, the output terminal of the second detection tube Q2, and the output terminal of the third detection tube Q3. The processing unit is also connected to the control port 310; the processing unit 300 is connected to the first switch tube V1 through the first control tube Q4, and the processing unit is connected to the second switch tube V2 through the second control tube Q5; in response to the control signal received by the control port 310, the processing unit 300 controls the first switch tube V1 and the second switch tube V2 to turn on or off respectively through the first control tube Q4 and the second control tube Q5 according to the output signals of the first detection tube Q1, the second detection tube Q2, and the third detection tube Q3, so as to output a stable voltage at the power supply output terminal.

[0020] By setting up an identification unit 100 and a processing unit 300, the identification unit 100 can accurately identify whether it is powered by a single wire and send a corresponding identification signal to the processing unit 300. The processing unit 300 adaptively controls the first switching transistor V1 and the second switching transistor V2 to turn on or off, so that the power supply output terminal outputs a stable voltage, improving the compatibility of the adaptive power supply circuit. By setting up a power supply unit 200 and a processing unit 300, the power supply unit 200 can adaptively provide a stable DC power supply to the processing unit 300 according to the identification signal of the identification unit 100, improving the operational stability of the adaptive power supply circuit and enhancing the user experience.

[0021] In another embodiment, the load power supply control circuit 210 further includes a first diode D1 and a second diode D2; the first diode D1 is connected in parallel with the first switching transistor V1, and the second diode D2 is connected in parallel with the second switching transistor V2. By setting the first diode D1 and the second diode D2, the processing unit 300 can control the first switching transistor V1 and the second switching transistor V2 to turn on or off to provide positive single-cycle or negative single-cycle AC power supply, ensuring the compatibility of the adaptive power supply circuit.

[0022] In another embodiment, the filtering device includes a third diode D3, a fourth diode D4, and a fifth diode D5. The anode of the third diode D3 is connected to the neutral wire, the anode of the fourth diode D4 is connected to the live wire, and the anode of the fifth diode D5 is connected to the power supply output terminal. The cathodes of the third diode D3, the fourth diode D4, and the fifth diode D5 are all connected to the charging capacitor CE1. By setting the third diode D3, the fourth diode D4, and the fifth diode D5, the filtering device can perform full-wave rectification of the mains power, enabling the charging capacitor CE1 to charge quickly and stably before supplying power to the processing unit 300, thereby improving the operational stability of the adaptive power supply circuit.

[0023] In another embodiment, the system power supply circuit 220 is further provided with a voltage conversion module 230. The input terminal of the voltage conversion module 230 is connected to the third diode D3, the fourth diode D4, the fifth diode D5, and the charging capacitor CE1, and the output terminal of the voltage conversion module 230 is connected to the processing unit 300. By setting up the voltage conversion module 230, it is ensured that the system power supply circuit 220 can stably output DC voltage to the processing unit 300, thus ensuring the operational stability of the adaptive power supply circuit.

[0024] In another embodiment, a first voltage limiting element Z1 is provided between the power supply output terminal and the input terminal of the third detection tube Q3. By setting the first voltage limiting element Z1, the output signal of the second detection tube Q2 is delayed, causing the first switching tube V1 to turn on later, ensuring that the charging capacitor CE1 receives sufficient charging time and improving the power supply stability of the adaptive power supply circuit.

[0025] In another embodiment, a second voltage limiting element Z2 is provided between the live wire and the input terminal of the second detection tube Q2. By setting the second voltage limiting element Z2, the output signal of the third detection tube Q3 can be delayed, causing the second switching tube V2 to turn on later, ensuring that the charging capacitor CE1 receives sufficient charging time. When the power supply is neutral or live, no delay is required, thus improving the power supply stability of the adaptive power supply circuit.

[0026] In another embodiment, the first switching transistor V1 and the second switching transistor V2 are silicon controlled rectifiers (SCRs). SCRs can be used as contactless switches to quickly connect or disconnect the circuit, ensuring that the first switching transistor V1 and the second switching transistor V2 can quickly switch between on and off states, so that the power supply unit 200 can meet different power supply states and improve the compatibility of the adaptive power supply circuit. In some embodiments, the first switching transistor V1 and the second switching transistor V2 can also be MOS devices.

[0027] In another embodiment, the first detection transistor Q1, the second detection transistor Q2, the third detection transistor Q3, the first control transistor Q4, and the second control transistor Q5 are all transistors. Transistors are semiconductor devices that control current, amplifying weak signals into larger amplitude electrical signals, and can be used as contactless switches. The fact that the first detection transistor Q1, the second detection transistor Q2, the third detection transistor Q3, the first control transistor Q4, and the second control transistor Q5 are all transistors enables the power supply unit 200 to respond quickly, ensuring the operational stability of the adaptive power supply circuit. In some embodiments, the first detection transistor Q1, the second detection transistor Q2, the third detection transistor Q3, the first control transistor Q4, and the second control transistor Q5 can also be MOSFETs.

[0028] In another embodiment, control port 310 is connected to a wired controller or a wireless controller. Triggering control port 310 via wired or wireless control improves the ease of use and compatibility of the adaptive power supply circuit. In practical applications, control port 310 is a control interface that directly transmits control data to pin IN4 of processing unit 300.

[0029] This utility model embodiment also provides a controller, including the adaptive power supply circuit described above.

[0030] The working principle of this utility model will be further explained below.

[0031] In this embodiment, the controller is directly connected to the neutral wire, live wire, and power output terminal of the mains power supply. Specifically, as shown... Figure 2 As shown, IN_ACL connects to the live wire, IN_ACN connects to the neutral wire, and OUT_L1 is the power output terminal connected to the electrical load, and is connected to the control port 310 on the processing unit 300.

[0032] In the case of neutral-live power supply, the output signals of the first detection tube Q1, the second detection tube Q2, and the third detection tube Q3 are acquired. At this time, the first detection tube Q1 is connected to the neutral wire, and the output terminal of the first detection tube Q1 outputs a low-level signal to the processing unit 300. That is, the processing unit 300 detects a low level of SN and determines that it is neutral-live power supply. When the wired controller or the wireless controller is triggered, the processing unit 300 responds to the control signal received by the control port 310 and outputs a high-level signal to the first control tube Q4 and the second control tube Q5. The first control tube Q4 and the second control tube Q5 send conduction signals to the first switch tube V1 and the second switch tube V2, respectively. After the first switch tube V1 and the second switch tube V2 are turned on, the power supply output terminal OUT_L1 can supply power to the electrical load. At the same time, the mains power is rectified by the first diode D1 and the third diode D3 to charge the charging capacitor CE1, so as to stably output a 5V DC voltage to the processing unit 300 through the voltage conversion module 230.

[0033] Furthermore, when the first detection tube Q1 is connected to the neutral wire, its output terminal outputs a high-level signal to the processing unit 300. That is, the processing unit 300 detects a high level on SN and determines that it is powered by a single wire. When the wired controller or the wireless controller is triggered, the processing unit 300 responds to the control signal received by the control port 310 and acquires the output signals of the first detection tube Q1, the second detection tube Q2, and the third detection tube Q3. During the positive half-cycle of the mains power, when the processing unit 300 detects a low-level signal at the output of the second detection transistor Q2, it sends a low (high) level signal to the first control transistor Q4, thereby turning on the first switch transistor V1 and turning off the second switch transistor V2. At this time, the power supply output terminal OUT_L1 can provide positive single-cycle AC power to the electrical load. During the negative half-cycle of the mains power, when the processing unit 300 detects a low-level signal at the output of the third detection transistor Q3, it sends a high (low) level signal to the second control transistor Q5, thereby turning on the second switch transistor V2 and turning off the first switch transistor V1. At this time, the power supply output terminal OUT_L1 can provide negative single-cycle AC power to the electrical load. Due to the presence of the first voltage limiting element Z1 and the second voltage limiting element Z2, the output signals of the second detection transistor Q2 and the third detection transistor Q3 are delayed. Specifically, the delay time is determined by the parameters of the first voltage limiting element Z1 and the second voltage limiting element Z2. Therefore, the opening or closing of the first switch V1 and the second switch V2 is also performed with a lag. Before the first switch V1 and the second switch V2 are turned on, the mains power is rectified by the first diode D1, the second diode D2, the fourth diode D4 and the fifth diode D5 to charge the charging capacitor CE1, so as to stably output a 5V DC voltage to the processing unit 300 through the voltage conversion module 230.

[0034] As can be seen from the above description, the adaptive power supply circuit and its controller of this utility model, by setting up an identification unit 100 and a processing unit 300, enable the identification unit 100 to accurately identify whether single-wire power supply is required and transmit the corresponding identification signal to the processing unit 300. The processing unit 300 adaptively controls the first switching transistor V1 and the second switching transistor V2 to turn on or off, so that the power supply output terminal outputs a stable voltage, thereby improving the compatibility of the adaptive power supply circuit. By setting up a power supply unit 200 and a processing unit 300, the power supply unit 200 can adaptively provide a stable DC power supply to the processing unit 300 according to the identification signal from the identification unit 100, thereby improving the operational stability of the adaptive power supply circuit and enhancing the user's experience. User experience; By setting the first diode D1 and the second diode D2, the processing unit 300 can control the first switch V1 and the second switch V2 to turn on or off to provide positive single-cycle or negative single-cycle AC power supply, ensuring the compatibility of the adaptive power supply circuit; By setting the third diode D3, the fourth diode D4 and the fifth diode D5, the filtering device can perform full-wave rectification of the mains power, so that the charging capacitor CE1 can be charged quickly and stably before supplying power to the processing unit 300, improving the working stability of the adaptive power supply circuit; By setting the voltage conversion module 230, it is ensured that the system power supply circuit 220 can stably output DC voltage to the processing unit 300, ensuring the working stability of the adaptive power supply circuit.

[0035] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model 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 the present utility model.

Claims

1. An adaptive power supply circuit, characterized in that, include: The identification unit includes a first detection tube Q1, a second detection tube Q2, and a third detection tube Q3. The input terminal of the first detection tube Q1 is connected to the neutral wire, the input terminal of the second detection tube Q2 is connected to the live wire, and the input terminal of the third detection tube Q3 is connected to the power supply output terminal of the adaptive power supply circuit. The power supply unit includes a load power supply control circuit and a system power supply circuit. The load power supply control circuit includes a first switch V1 and a second switch V2, which are connected in series between the live wire and the power supply output terminal. The system power supply circuit includes a filter device and a charging capacitor CE1. One end of the filter device is connected to the neutral wire, the live wire, or the power supply output terminal, and the other end of the filter device is connected to the charging capacitor CE1. The processing unit is connected to the system power supply circuit, the output terminal of the first detection tube Q1, the output terminal of the second detection tube Q2, and the output terminal of the third detection tube Q3. The processing unit is also connected to a control port. The processing unit is connected to the first switch tube V1 through a first control tube Q4 and to the second switch tube V2 through a second control tube Q5. In response to the control signal received by the control port, the processing unit controls the first switch tube V1 and the second switch tube V2 to turn on or off respectively through the first control tube Q4 and the second control tube Q5 according to the output signals of the first detection tube Q1, the second detection tube Q2, and the third detection tube Q3, so as to output a stable voltage at the power supply output terminal.

2. The adaptive power supply circuit according to claim 1, characterized in that, The load power supply control circuit further includes a first diode D1 and a second diode D2; the first diode D1 is connected in parallel with the first switching transistor V1, and the second diode D2 is connected in parallel with the second switching transistor V2.

3. The adaptive power supply circuit according to claim 2, characterized in that, The filtering device includes a third diode D3, a fourth diode D4, and a fifth diode D5. The positive terminal of the third diode D3 is connected to the neutral wire, the positive terminal of the fourth diode D4 is connected to the live wire, and the positive terminal of the fifth diode D5 is connected to the power supply output terminal. The negative terminals of the third diode D3, the fourth diode D4, and the fifth diode D5 are all connected to the charging capacitor CE1.

4. The adaptive power supply circuit according to claim 3, characterized in that, The system power supply circuit also includes a voltage conversion module. The input terminal of the voltage conversion module is connected to the third diode D3, the fourth diode D4, the fifth diode D5 and the charging capacitor CE1, and the output terminal of the voltage conversion module is connected to the processing unit.

5. The adaptive power supply circuit according to claim 1, characterized in that, A first voltage limiting element Z1 is provided between the power supply output terminal and the input terminal of the third detection tube Q3.

6. The adaptive power supply circuit according to claim 5, characterized in that, A second pressure limiting element Z2 is provided between the fire wire and the input terminal of the second detection tube Q2.

7. The adaptive power supply circuit according to claim 1, characterized in that, The first switch V1 and the second switch V2 are thyristors.

8. The adaptive power supply circuit according to claim 1, characterized in that, The first detection tube Q1, the second detection tube Q2, the third detection tube Q3, the first control tube Q4, and the second control tube Q5 are all transistors.

9. The adaptive power supply circuit according to claim 1, characterized in that, The control port is connected to a wired controller or a wireless controller.

10. A controller, characterized in that, Includes the adaptive power supply circuit described in any one of claims 1-9.

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