Self-adaptive low-voltage lamp strip circuit

Abstract

The invention relates to the technical field of power supply control, in particular to a self-adaptive low-voltage lamp strip circuit, which comprises a PWM (Pulse Width Modulation) control circuit, a transformer, a rectifying circuit, a switching circuit, an output port, a detection execution circuit and a sensor control circuit, the output end of the PWM control circuit is electrically connected with the input end of the transformer; the output end of the transformer is electrically connected with the input end of the rectifying circuit, the output end of the rectifying circuit is electrically connected with the input end of the switching circuit, the output end of the switching circuit is electrically connected with the input end of the output port, and the output end of the switching circuit is further electrically connected with the input end of the detection execution circuit; the output end of the detection execution circuit is electrically connected with the input end of the output port, and is also electrically connected with the input end of the sensor control circuit. The device has the characteristics that the structural design is simpler and more reasonable, and the voltage required by the light source can be automatically identified and matched.

Description

Technical Field

[0001] This invention relates to the field of power control technology, and in particular to an adaptive low-voltage LED strip circuit. Background Technology

[0002] Currently, most LED strip power supplies on the market use DIP switches to control the components in the sampling circuit to achieve output voltage conversion. The disadvantage of this circuit is that it cannot achieve automatic conversion and requires manual control. The duty cycle during circuit operation is very large, the component parameters are difficult to control, and the power cannot be consistent.

[0003] This makes it inconvenient to disassemble LED strip power supplies, especially for cabinet lights, due to the unique installation of the light source and power supply. When the power supply or light source fails, and the voltage range of the replacement light source or power supply is unknown, manual adjustment to match the voltage is cumbersome and prone to errors. Incorrect matching can prematurely or instantly burn out the light source. Therefore, a power supply that can automatically identify and match the required voltage of the light source is needed to extend its lifespan. Summary of the Invention

[0004] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is how to provide a self-adaptive low-voltage LED strip circuit with a simpler and more reasonable structural design that can automatically identify and match the voltage required by the light source.

[0005] To achieve the above objectives, the present invention provides an adaptive low-voltage LED strip circuit, characterized in that it includes a PWM control circuit, a transformer, a rectifier circuit, a switching circuit, an output port, a detection and execution circuit, and a sensor control circuit; the output terminal of the PWM control circuit is electrically connected to the input terminal of the transformer; the output terminal of the transformer is electrically connected to the input terminal of the rectifier circuit, the output terminal of the rectifier circuit is electrically connected to the input terminal of the switching circuit, the output terminal of the switching circuit is electrically connected to the input terminal of the output port, and the output terminal of the switching circuit is also electrically connected to the input terminal of the detection and execution circuit; the output terminal of the detection and execution circuit is electrically connected to the input terminal of the output port, and the output terminal of the detection and execution circuit is also electrically connected to the input terminal of the sensor control circuit.

[0006] Thus, in the aforementioned self-adaptive low-voltage LED strip circuit, the PWM control circuit is used for system power supply; the transformer is used to convert the input high voltage into low voltage; the rectifier circuit is used to convert the input AC voltage into DC voltage through devices; the switching circuit receives instructions from the detection circuit to realize the switching execution of the circuit, and the switching circuit realizes the voltage change of the output port through the opening and closing of internal devices; the detection execution circuit is used for signal detection and judgment; the sensor control circuit is used to receive external sensor signals and send them to the detection execution circuit, and the output port is used to output voltage and connect to the load.

[0007] As an optimization, the rectifier circuit includes a first rectifier circuit and a second rectifier circuit. The output terminals of the transformers are electrically connected to the input terminals of the first rectifier circuit and the second rectifier circuit, respectively, and the output terminals of the first rectifier circuit and the second rectifier circuit are electrically connected to the input terminal of the switching circuit.

[0008] In this structure, the rectifier circuit receives energy from the transformer and converts it into low-voltage DC power using the characteristics of its components. The inclusion of both a first and a second rectifier circuit makes the entire circuit more reliable.

[0009] As an optimization, the PWM control circuit includes a rectifier and filter circuit and a PWM chip. The input terminal of the PWM control circuit is used to connect to an external 220V power supply circuit. The rectifier and filter circuit in the PWM control circuit can complete rectification and filtering. The PWM chip establishes a PWM signal and control by starting up, and then supplies energy to the transformer.

[0010] Furthermore, after receiving energy from the PWM control circuit, the transformer outputs an amount of energy lower than the input voltage through its own transformer transformation ratio.

[0011] As an optimization, the output port is used to connect to and power the lamp strip connection terminal.

[0012] In this way, the detection and execution circuit detects the voltage of the LED strip connected to the output port of the MCU through internal components. After the MCU's internal code performs judgment and analysis, it transmits the corresponding specification to the switching circuit to realize the corresponding switching action, and outputs the voltage corresponding to the LED strip from the output port. The sensor control circuit realizes different functions of the circuit by connecting different external sensors and performs corresponding actions. The output port receives the voltage sent by the switching circuit and transmits it to the LED strip.

[0013] As an optimization, the detection execution circuit includes a microcontroller and a MOSFET. A first connecting line, a second connecting line, and a third connecting line are respectively provided at the first, second, and third terminals of the MOSFET. A resistor R38 and a diode R39 are provided on the first connecting line, with the middle and far ends of the first connecting line forming connection terminals. A resistor R56 and a diode D8 are provided on the second connecting line, and an electrolytic capacitor EC8 is also connected between the resistor R56 and the diode D8 on the second connecting line; the far end of the second connecting line forms a connection terminal. A resistor R42 is provided on the third connecting line, with the far end of the third connecting line being a connection terminal. A first pair of wires, a second pair of wires, and a third pair of wires are connected between the distal ends of the first and second connecting lines. A resistor R39 is installed on the first connecting line. A capacitor C11 is installed on the second connecting line. A resistor R39 is installed on the third connecting line, and a transistor Q5 is also installed on the third connecting line. One terminal of transistor Q5 is connected to a resistor R41, and the other end of resistor R41 is connected to the distal end of the third wire. A first intermediate line and a second intermediate line are connected between the second and third connecting lines. A resistor R34 is installed on the first intermediate line. A transistor Q3 is installed on the second intermediate line, and a connecting wire is connected to the other terminal of transistor Q3. A resistor R35 is connected between the connecting wire and the third connecting line, and a resistor R36 is installed on the connecting wire. Furthermore, the far end of the connecting line is a terminal; a first external connection is also provided on the connecting line, and a resistor R37 is provided on the first external connection; a second external connection is also connected to the third connecting line, and the far ends of the first external connection and the far ends of the second external connection are used to connect to the sensor control circuit; and the connection terminals formed by the middle and far ends of the first connecting line, the far end of the second connecting line, the far end of the third connecting line, and the far end of the connecting line are each used to connect to the microcontroller.

[0014] As an optimization, the far ends of the first connecting line, the second connecting line, the third connecting line, and the connecting line each form a POWERADC terminal, a V+ terminal, a MOSE Ctrl1 terminal, and a MOSE Ctrl-A terminal; the microcontroller includes an MCU chip, which has POWER ADC terminals, V+ terminals, MOSE Ctrl1 terminals, and MOSE Ctrl-A terminals, and each of these terminals is connected to the corresponding POWER ADC terminal, V+ terminal, MOSE Ctrl1 terminal, and MOSE Ctrl-A terminal.

[0015] As an optimization, the seventh and eleventh terminals on the MCU chip are connected; and two external connection wires are provided for the paired connection of the seventh terminal, with resistors R50 and R51 respectively on the two external connection wires, and the far ends of the two external connection wires respectively form a 5V terminal and a G terminal; the ninth and tenth terminals on the MCU chip are each connected with an extension connection wire, with resistors R58 and R59 respectively on the two extension connection wires, and LED-B and LED-R respectively on the far ends of the two extension connection wires, and the far ends of the two extension connection wires are connected; the twelfth and thirteenth terminals on the MCU chip respectively form a POWER ADC terminal and a MOSE Ctrl1 terminal; the first and sixteenth terminals on the MCU chip are connected by a phase connection wire, with capacitor C3 provided on the phase connection wire, and a 5V terminal is formed on the phase connection wire.

[0016] As an optimization, a voltage regulator IC is also included. Each voltage regulator IC has an upper connection, a middle connection, and a lower connection. A resistor R49 is provided on the upper connection, and the far end of the upper connection forms a 12V terminal, which is connected to the sensor control circuit. The far end of the middle connection forms a ground connection. An electrolytic capacitor EC7 is provided on the lower connection, and a +5V terminal is provided on the lower connection.

[0017] In this way, the aforementioned detection and execution circuit uses internal components to detect the voltage of the LED strip connected to the MCU's output port. After the MCU's internal code performs judgment and analysis, it transmits the corresponding specification to the switching circuit to achieve the corresponding switching action, outputting the voltage corresponding to the LED strip from the output port. The entire detection and execution circuit design is simpler and more reasonable, and can better complete the detection and execution.

[0018] As an optimization, the switching circuit includes two switching lines arranged in parallel. One switching line houses a relay JQ1A and a transistor Q6, while the other switching line houses a relay JQ2A and a transistor Q11.

[0019] The two ends of the two switching lines are connected by an upper connecting line and a lower connecting line, and the middle of the upper connecting line and the middle of the lower connecting line respectively form a 12V terminal and a grounding terminal;

[0020] Diodes D14 and D15 are respectively installed at the two outer ends of the upper connecting line, and the two ends of the upper switching line are respectively connected to the middle position of the two switching lines.

[0021] Resistors R60 and R62 are respectively provided at the two outer ends of the lower connecting line, and the two outer ends of the lower connecting line are respectively connected to transistors Q6 and Q11; and external wires are also connected to transistors Q6 and Q11, with resistors R61 and R63 respectively provided on the external wires, and the outer ends of the external wires respectively form the first external terminal LIN2 and the first external terminal LIN1.

[0022] In this way, the aforementioned switching circuit can better realize voltage changes in the output circuit, thereby better solving the technical problems of existing technologies using DIP switches, such as large duty cycles, inconsistent power, low sampling accuracy, and difficulty in controlling device parameters. This makes the entire circuit easier to control, reduces the duty cycle during circuit operation, results in higher sampling accuracy, and allows for better control of device parameters.

[0023] In summary, the circuit described above has the advantages of simpler and more reasonable structural design, and the ability to automatically identify and match the voltage required by the light source. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the circuit module connection of the self-adaptive low-voltage LED strip circuit in a specific embodiment of the present invention.

[0025] Figure 2 yes Figure 1 A schematic diagram of the connection of the left half of the switching circuit.

[0026] Figure 3 yes Figure 1 A schematic diagram of the connection of the right half of the switching circuit.

[0027] Figure 4 yes Figure 1 The diagram shows the connection of the PWM control circuit, transformer, rectifier circuit, switching circuit, and output port.

[0028] Figure 5 yes Figure 1 A schematic diagram of the switching circuit in the diagram. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and for 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 manner. Therefore, they should not be construed as limitations on the present invention. Terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] like Figures 1 to 5 As shown, the self-adaptive low-voltage LED strip circuit includes a PWM control circuit 1, a transformer 2, a rectifier circuit 3, a switching circuit 4, an output port 5, a detection and execution circuit 6, and a sensor control circuit 7. The output terminal of the PWM control circuit is electrically connected to the input terminal of the transformer; the output terminal of the transformer is electrically connected to the input terminal of the rectifier circuit; the output terminal of the rectifier circuit is electrically connected to the input terminal of the switching circuit; the output terminal of the switching circuit is electrically connected to the input terminal of the output port; the output terminal of the switching circuit is also electrically connected to the input terminal of the detection and execution circuit; the output terminal of the detection and execution circuit is electrically connected to the input terminal of the output port; and the output terminal of the detection and execution circuit is also electrically connected to the input terminal of the sensor control circuit.

[0031] Thus, in the aforementioned self-adaptive low-voltage LED strip circuit, the PWM control circuit is used for system power supply; the transformer is used to convert the input high voltage into low voltage; the rectifier circuit is used to convert the input AC voltage into DC voltage through devices; the switching circuit receives instructions from the detection circuit to realize the switching execution of the circuit, and the switching circuit realizes the voltage change of the output port through the opening and closing of internal devices; the detection execution circuit is used for signal detection and judgment; the sensor control circuit is used to receive external sensor signals and send them to the detection execution circuit, and the output port is used to output voltage and connect to the load.

[0032] In this specific embodiment, the rectifier circuit includes a first rectifier circuit 8 and a second rectifier circuit 9. The output terminals of the transformers are electrically connected to the input terminals of the first and second rectifier circuits, respectively, and the output terminals of the first and second rectifier circuits are electrically connected to the input terminal of the switching circuit.

[0033] In this structure, the rectifier circuit receives energy from the transformer and converts it into low-voltage DC power using the characteristics of its components. The inclusion of both a first and a second rectifier circuit makes the entire circuit more reliable.

[0034] In this specific embodiment, the PWM control circuit includes a rectifier and filter circuit and a PWM chip. The input terminal of the PWM control circuit is used to connect to an external 220V power supply circuit. The rectifier and filter circuit in the PWM control circuit can complete rectification and filtering. The PWM chip establishes a PWM signal and control by starting up, and then supplies energy to the transformer.

[0035] Furthermore, after receiving energy from the PWM control circuit, the transformer outputs an amount of energy lower than the input voltage through its own transformer transformation ratio.

[0036] In this specific embodiment, the output port is used to connect to and supply power to the lamp strip electrical connection terminal.

[0037] In this way, the detection and execution circuit detects the voltage of the LED strip connected to the output port of the MCU through internal components. After the MCU's internal code performs judgment and analysis, it transmits the corresponding specification to the switching circuit to realize the corresponding switching action, and outputs the voltage corresponding to the LED strip from the output port. The sensor control circuit realizes different functions of the circuit by connecting different external sensors and performs corresponding actions. The output port receives the voltage sent by the switching circuit and transmits it to the LED strip.

[0038] In this specific embodiment, the detection execution circuit includes a microcontroller 111 and a MOSFET 112. A first connecting line 113, a second connecting line 114, and a third connecting line 115 are respectively connected to the first, second, and third terminals of the MOSFET. A resistor R38 and a diode R39 are provided on the first connecting line, with the middle and far ends of the first connecting line forming connection terminals. A resistor R56 and a diode D8 are provided on the second connecting line, and an electrolytic capacitor EC8 is connected between the resistor R56 and the diode D8 on the second connecting line; the far end of the second connecting line forms a connection terminal. A resistor R42 is provided on the third connecting line, with the far end of the third connecting line being a connection terminal. A first pair of wires 116, a second pair of wires 117, and a third pair of wires 118 are connected between the distal ends of the first and second connecting lines. A resistor R39 is installed on the first connecting line. A capacitor C11 is installed on the second connecting line. A resistor R39 is installed on the third connecting line, and a transistor Q5 is also installed on the third connecting line. One terminal of the transistor Q5 is connected to a resistor R41, and the other end of the resistor R41 is connected to the distal end of the third connecting line. A first intermediate line 119 and a second intermediate line 120 are connected between the second and third connecting lines. A resistor R34 is installed on the first intermediate line. A transistor Q3 is installed on the second intermediate line, and a connecting line 121 is connected to the other terminal of the transistor Q3. A resistor R35 is connected between the connecting line and the third connecting line, and a resistor R36 is installed on the connecting line. Furthermore, the far end of the connecting line is a terminal; a first external connection 122 is also provided on the connecting line, and a resistor R37 is provided on the first external connection; a second external connection 123 is also connected to the third connecting line, and the far ends of the first and second external connections are used to connect to the sensor control circuit; and the connection terminals formed by the middle and far ends of the first connecting line, the far end of the second connecting line, the far end of the third connecting line, and the far end of the connecting line are each used to connect to the microcontroller.

[0039] In this specific embodiment, the far ends of the first connecting line, the second connecting line, the third connecting line, and the connecting line each form a POWER ADC terminal, a V+ terminal, a MOSE Ctrl1 terminal, and a MOSE Ctrl-A terminal; the microcontroller includes an MCU chip 124, which has POWER ADC terminals, V+ terminals, MOSE Ctrl1 terminals, and MOSE Ctrl-A terminals, and each of these terminals is connected to the corresponding POWER ADC terminal, V+ terminal, MOSE Ctrl1 terminal, and MOSE Ctrl-A terminal.

[0040] In this specific embodiment, the seventh and eleventh terminals on the MCU chip are connected; and two external connection wires 125 are provided in pairs at the seventh terminal, with resistors R50 and R51 respectively provided on the two external connection wires, and the far ends of the two external connection wires each form a 5V terminal and a G terminal; the ninth and tenth terminals on the MCU chip are each connected with an extension connection wire 126, with resistors R58 and R59 respectively provided on the two extension connection wires, and LED-B and LED-R respectively provided at the far ends of the two extension connection wires, and the far ends of the two extension connection wires are connected; the twelfth and thirteenth terminals on the MCU chip each form a POWER ADC terminal and a MOSE Ctrl1 terminal; the first and sixteenth terminals on the MCU chip are connected through a phase connection wire 127, with a capacitor C3 provided on the phase connection wire, and a 5V terminal is formed on the phase connection wire.

[0041] In this specific embodiment, a voltage regulator IC is also included. The voltage regulator IC is connected to an upper terminal 128, a middle terminal 129, and a lower terminal 130. A resistor R49 is provided on the upper terminal, and the far end of the upper terminal forms a 12V terminal, which is connected to the sensor control circuit. The far end of the middle terminal forms a ground connection terminal. An electrolytic capacitor EC7 is provided on the lower terminal, and a +5V terminal is provided on the lower terminal.

[0042] In this way, the aforementioned detection and execution circuit uses internal components to detect the voltage of the LED strip connected to the MCU's output port. After the MCU's internal code performs judgment and analysis, it transmits the corresponding specification to the switching circuit to achieve the corresponding switching action, outputting the voltage corresponding to the LED strip from the output port. The entire detection and execution circuit design is simpler and more reasonable, and can better complete the detection and execution.

[0043] In this specific embodiment, the switching circuit includes two switching lines 131 arranged in parallel. A relay JQ1A and a transistor Q6 are installed on one switching line, and a relay JQ2A and a transistor Q11 are installed on the other switching line.

[0044] The two ends of the two switching lines are connected by an upper connecting line 132 and a lower connecting line 133, and the middle of the upper connecting line and the middle of the lower connecting line respectively form a 12V terminal and a grounding terminal;

[0045] Diodes D14 and D15 are respectively installed at the two outer ends of the upper connecting line, and the two ends of the upper switching line are respectively connected to the middle position of the two switching lines.

[0046] Resistors R60 and R62 are respectively provided at the two outer ends of the lower connecting line, and the two outer ends of the lower connecting line are respectively connected to transistors Q6 and Q11; and external wires are also connected to transistors Q6 and Q11, with resistors R61 and R63 respectively provided on the external wires, and the outer ends of the external wires respectively form the first external terminal LIN2 and the first external terminal LIN1.

[0047] In this way, the aforementioned switching circuit can better realize voltage changes in the output circuit, thereby better solving the technical problems of existing technologies using DIP switches, such as large duty cycles, inconsistent power, low sampling accuracy, and difficulty in controlling device parameters. This makes the entire circuit easier to control, reduces the duty cycle during circuit operation, results in higher sampling accuracy, and allows for better control of device parameters.

[0048] In summary, the circuit described above has the advantages of simpler and more reasonable structural design, and the ability to automatically identify and match the voltage required by the light source.

[0049] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A self-adaptive low-voltage LED strip circuit, characterized in that; It includes a PWM control circuit, a transformer, a rectifier circuit, a switching circuit, an output port, a detection and execution circuit, and a sensor control circuit. The output of the PWM control circuit is electrically connected to the input of the transformer. The output of the transformer is electrically connected to the input of the rectifier circuit. The output of the rectifier circuit is electrically connected to the input of the switching circuit. The output of the switching circuit is electrically connected to the input of the output port. The output of the switching circuit is also electrically connected to the input of the detection and execution circuit. The output of the detection and execution circuit is electrically connected to the input of the output port. The output of the detection and execution circuit is also electrically connected to the input of the sensor control circuit.

2. The self-adaptive low-voltage LED strip circuit as described in claim 1, characterized in that; The rectifier circuit includes a first rectifier circuit and a second rectifier circuit. The output terminals of the transformers are electrically connected to the input terminals of the first rectifier circuit and the second rectifier circuit, respectively. The output terminals of the first rectifier circuit and the second rectifier circuit are electrically connected to the input terminal of the switching circuit, respectively.

3. The self-adaptive low-voltage LED strip circuit as described in claim 1, characterized in that; The PWM control circuit includes a rectifier and filter circuit and a PWM chip. The input terminal of the PWM control circuit is used to connect to an external 220V power supply circuit. The rectifier and filter circuit in the PWM control circuit can complete rectification and filtering. The PWM chip establishes a PWM signal and control by starting up, and then supplies energy to the transformer.

4. The self-adaptive low-voltage LED strip circuit as described in claim 1, characterized in that; The output port is used to connect to and supply power to the lamp strip electrical connection terminal.

5. The self-adaptive low-voltage LED strip circuit as described in claim 1, characterized in that; The detection and execution circuit includes a microcontroller and a MOSFET. The first, second, and third terminals of the MOSFET are respectively connected with a first connection line, a second connection line, and a third connection line. A resistor R38 and a diode R39 are provided on the first connecting line, and the middle and far ends of the first connecting line each form a connecting terminal; A resistor R56 and a diode D8 are set on the second connection line, and an electrolytic capacitor EC8 is also connected between the resistor R56 and the diode D8 on the second connection line; and the far end of the second connection line forms a connection terminal. A resistor R42 is installed on the third connection line, and the far end of the third connection line is a terminal. A first pair of wires, a second pair of wires, and a third pair of wires are also connected and provided between the far ends of the first connecting line and the second connecting line; A resistor R39 is installed on the first mating line; A capacitor C11 is installed on the second docking line; A resistor R39 is provided on the third mating line, and a transistor Q5 is also provided on the third mating line. One of the terminals of the transistor Q5 is connected to a resistor R41, and the other end of the resistor R41 is connected to the far end of the third terminal. A first intermediate line and a second intermediate line are provided between the second connecting line and the third connecting line. A resistor R34 is placed on the first intermediate line; A transistor Q3 is installed on the second intermediate line. A connecting wire is connected to the other terminal of the transistor Q3. A resistor R35 is connected between the connecting wire and the third connecting wire. A resistor R36 is installed on the connecting wire, and the far end of the connecting wire is the terminal. A first external connection is also provided on the connecting line, and a resistor R37 is provided on the first external connection; a second external connection is also provided on the third connecting line, and the far end of the first external connection and the far end of the second external connection are used to connect to the sensor control circuit. Furthermore, the connection ends formed by the middle and far ends of the first connection line, the far end of the second connection line, the far end of the third connection line, and the far end of the connecting line are each used to connect to the microcontroller.

6. The self-adaptive low-voltage LED strip circuit as described in claim 5, characterized in that; The first connecting line, the second connecting line, the third connecting line, and the connecting line at their far ends each form a POWER ADC terminal, a V+ terminal, a MOSE Ctrl1 terminal, and a MOSE Ctrl-A terminal; the microcontroller includes an MCU chip, which has POWER ADC terminals, V+ terminals, MOSE Ctrl1 terminals, and MOSE Ctrl-A terminals, and each of these terminals is connected to the corresponding POWER ADC terminal, V+ terminal, MOSE Ctrl1 terminal, and MOSE Ctrl-A terminal.

7. The self-adaptive low-voltage LED strip circuit as described in claim 6, characterized in that; The seventh and eleventh terminals on the MCU chip are connected; and two external connection wires are set in the pair connection of the seventh terminal. Resistors R50 and R51 are set on the two external connection wires respectively, and the far ends of the two external connection wires form a 5V terminal and a G terminal respectively. The ninth and tenth terminals on the MCU chip are each connected to an extension connection. Resistors R58 and R59 are provided on the two extension connections, and LED-B and LED-R are provided at the far ends of the two extension connections, and the far ends of the two extension connections are connected together. The twelfth and thirteenth terminals on the MCU chip respectively form the POWER ADC terminal and the MOSE Ctrl1 terminal; The first and sixteenth terminals on the MCU chip are connected by a phase connection. A capacitor C3 is installed on the phase connection, and a 5V terminal is formed on the phase connection.

8. The self-adaptive low-voltage LED strip circuit as described in claim 7, characterized in that; It also includes voltage regulator ICs, each with an upper connection, a middle connection, and a lower connection. A resistor R49 is provided on the upper connection, and a 12V connection point is formed at the far end of the upper connection, so that the 12V connection point is connected to the sensor control circuit. The far end of the middle connection forms a ground connection terminal; an electrolytic capacitor EC7 is installed on the lower connection, and a +5V connection position is provided on the lower connection.

9. The self-adaptive low-voltage LED strip circuit as described in claim 1, characterized in that; The switching circuit includes two switching lines arranged in parallel. A relay JQ1A and a transistor Q6 are installed on one switching line, and a relay JQ2A and a transistor Q11 are installed on the other switching line. The two ends of the two switching lines are connected by an upper connecting line and a lower connecting line, and the middle of the upper connecting line and the middle of the lower connecting line respectively form a 12V terminal and a grounding terminal; Diodes D14 and D15 are respectively installed at the two outer ends of the upper connecting line, and the two ends of the upper switching line are respectively connected to the middle position of the two switching lines. Resistors R60 and R62 are respectively provided at the two outer ends of the lower connecting line, and the two outer ends of the lower connecting line are respectively connected to transistors Q6 and Q11; and external wires are also connected to transistors Q6 and Q11, with resistors R61 and R63 respectively provided on the external wires, and the outer ends of the external wires respectively form the first external terminal LIN2 and the first external terminal LIN1.

Images