Lamp strip path number automatic switching circuit

Abstract

The utility model relates to the technical field of control circuits, in particular to a lamp strip path number automatic switching circuit which comprises a management circuit, an input voltage detection unit and a lamp strip state detection unit, one end of the management circuit is electrically connected with a voltage input end, the other end of the management circuit is connected with a lamp strip access end, and the management circuit is connected with a management unit. One end of the management unit is connected with a first resistor, and the other end is connected with an MCU; the input voltage detection unit is electrically connected to the voltage input end and is electrically connected to the MCU; the lamp strip state detection unit is electrically connected to the lamp strip access end and is electrically connected to the MCU; the management unit realizes automatic connection and disconnection of the management circuit through the MCU according to data transmitted by the input voltage detection unit and the lamp strip state detection unit in real time; the multiple management circuits are connected in parallel, and the ends, away from the lamp strip access end, of the multiple management circuits are electrically connected to the voltage input end. The utility model aims to quickly, stably and automatically switch the number of output circuits.

Description

Technical Field

[0001] This utility model relates to the field of control circuit technology, and in particular to an automatic switching circuit for the number of LED strips. Background Technology

[0002] LED light strips are long, strip-shaped light sources formed by connecting multiple LED chips in series. Their long, strip-like structure makes them easy to install, leading to their widespread use in indoor and outdoor decoration. To decorate specific areas, multi-channel light strips are often used. For multi-channel light strips to function properly, they require multiple power outputs. Related technologies often use automatic multi-output switching devices with output channel switching buttons. Users can press different buttons to select the desired number of outputs and then connect the light strip to the output circuit. However, users may make errors in determining the number of outputs, and if a connected light strip is damaged, the output circuit may not detect the problem immediately and take protective measures. Utility Model Content

[0003] The main purpose of this invention is to provide an automatic switching circuit for the number of LED strip channels, which aims to quickly and stably switch the number of output circuit channels.

[0004] To achieve the above objectives, this utility model proposes an automatic switching circuit for the number of LED strips, including a management circuit, an input voltage detection unit, and an LED strip status detection unit. One end of the management circuit is electrically connected to a voltage input terminal, and the other end is connected to an LED strip input terminal. A management unit is connected to the management circuit, and one end of the management unit is connected to a first resistor, and the other end is connected to an MCU.

[0005] The input voltage detection unit is electrically connected to the voltage input terminal and also electrically connected to the MCU;

[0006] The LED strip status detection unit is electrically connected to the LED strip input terminal and also electrically connected to the MCU;

[0007] The management unit uses the MCU to automatically control the on / off state of the circuit based on the data transmitted in real time from the input voltage detection unit and the LED strip status detection unit.

[0008] The management circuit has multiple circuits connected in parallel, and one end of each management circuit away from the LED strip input terminal is electrically connected to the voltage input terminal.

[0009] In one embodiment of this application, the management unit is a first MOS transistor, which is located between the voltage input terminal and the LED strip input terminal, and the base of the first MOS transistor is electrically connected to the MCU.

[0010] In one embodiment of this application, the management circuit is electrically connected to a branch control unit, and the branch control unit and the management unit are connected in parallel.

[0011] The branch control unit is connected to a second resistor and is electrically connected to the MCU.

[0012] In one embodiment of this application, the resistance value of the second resistor is much greater than the resistance value of the first resistor.

[0013] In one embodiment of this application, the branch control unit is a second MOS transistor, which is located between the voltage input terminal and the lamp strip input terminal, and the base of the second MOS transistor is electrically connected to the MCU.

[0014] In one embodiment of this application, the management circuit is connected to a circuit breaker protection unit, one end of which is connected to the voltage input terminal and the other end is connected to the management unit.

[0015] By adopting the above technical solution, this utility model has the following advantages:

[0016] 1. The management circuit is equipped with a management unit for controlling the on / off state. The management unit is controlled by the MCU. One end of the management circuit is connected to the voltage input terminal, and the other end is a light strip access terminal for connecting the light strip. The light strip access terminal is connected to the light strip and is equipped with a light strip status detection unit to detect the voltage and current after the light strip is connected to determine the connection status and working status of the light strip. When the light strip is not connected, the management unit is in an open circuit state, which can effectively reduce power consumption and avoid energy waste. When the light strip is connected, the light strip status detection unit will detect the connection status and current status of the light strip and send information to the MCU. The MCU will send a signal to the management unit to turn on the management circuit, so that the light strip can work normally and stably.

[0017] 2. The voltage input terminal is connected to an input voltage detection unit, which can detect the voltage status of the input circuit in real time, ensuring the safety of the circuit. When too many LED strips are connected, resulting in low input voltage, the MCU will record the maximum number of LED strips that can be connected when the input voltage is normal and issue an alarm. Users can record the maximum number of LED strips that the power supply can accommodate based on the input voltage detection unit, which facilitates the layout and management of LED strips and improves the protection effect of the circuit.

[0018] 3. The system features multiple management circuits connected in parallel to prevent interference. Each circuit is connected to a single power supply and controlled by a single input voltage detection unit. Each independent management circuit is powered off when no LED strip is connected, preventing energy waste and reducing power consumption. When an LED strip is detected by the LED strip status detection unit, the MCU checks the input voltage detection unit's status. If the input voltage is stable, the management unit will activate, allowing the LED strip to operate normally. The multiple management circuits eliminate the need for manual switching. As long as the power supply can handle the load and the LED strip itself is undamaged, the corresponding management circuit will automatically activate with the help of the MCU, automatically switching the number of output circuits and effectively improving the user experience. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an automatic switching circuit for the number of LED strips according to this utility model;

[0021] Figure 2 This is a schematic diagram of the management circuit of the automatic switching circuit for the number of LED strips according to this utility model.

[0022] Explanation of icon numbers:

[0023] 1. Management circuit; 11. Management unit; 12. First resistor; 13. Branch control unit; 14. Second resistor; 2. Circuit break protection unit; 3. Input voltage detection unit; 4. LED strip status detection unit.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0026] Reference Figures 1 to 2To achieve the above objectives, this utility model proposes an automatic switching circuit for the number of LED strips, including a management circuit 1, an input voltage detection unit 3, and an LED strip status detection unit 4. One end of the management circuit 1 is electrically connected to a voltage input terminal, and the other end is connected to an LED strip input terminal. A management unit 11 is connected to the management circuit 1. One end of the management unit 11 is connected to a first resistor 12, and the other end is connected to an MCU.

[0027] The input voltage detection unit 3 is electrically connected to the voltage input terminal and also electrically connected to the MCU;

[0028] The LED strip status detection unit 4 is electrically connected to the LED strip input terminal and also electrically connected to the MCU;

[0029] The management unit 11 uses the MCU to realize the automatic on / off management circuit 1 based on the data transmitted in real time from the input voltage detection unit 3 and the light strip status detection unit 4;

[0030] The management circuit 1 has multiple circuits, which are connected in parallel. The end of the multiple management circuits 1 that is furthest from the light strip input terminal is electrically connected to the voltage input terminal.

[0031] The management circuit 1 is equipped with a management unit 11 for controlling the on / off state. The management unit 11 is controlled by the MCU. One end of the management circuit 1 is connected to the voltage input terminal, and the other end is a light strip access terminal for connecting the light strip. The light strip access terminal is connected to the light strip and is equipped with a light strip status detection unit 4 to detect the voltage and current after the light strip is connected to determine the connection status and working status of the light strip. When the light strip is not connected, the management unit 11 is in an open circuit state, which can effectively reduce power consumption and avoid energy waste. When the light strip is connected, the light strip status detection unit 4 will detect the connection status and current status of the light strip and send information to the MCU. The MCU will send a signal to the management unit 11 to turn on the management circuit 1, so that the light strip can work normally and stably.

[0032] The voltage input terminal is connected to an input voltage detection unit 3, which can detect the voltage status of the input circuit in real time, ensuring the safety of the circuit. When too many light strips are connected, resulting in low input voltage, the MCU will record the maximum number of light strips that can be connected when the input voltage is normal and issue an alarm. Users can record the maximum number of light strips that the power supply can accommodate based on the input voltage detection unit 3, which facilitates the layout and management of light strips and improves the protection effect of the circuit.

[0033] The management circuit 1 has multiple circuits, which are connected in parallel to prevent interference. Each management circuit 1 is connected to a single power supply and can be controlled and managed by an input voltage detection unit 3. Each independent management circuit 1 is in a power-off state when no light strip is connected, which can avoid energy waste and reduce power consumption. When the connected light strip is detected by the light strip status detection unit 4, the MCU will check the status of the input voltage detection unit 3. If the input voltage is stable, the management unit 11 will be turned on, enabling the light strip to work normally. The multi-channel management circuit 1 does not require the user to manually switch the branch circuits. As long as the power supply can withstand it and the light strip itself is not damaged, the corresponding management circuit 1 will be automatically turned on with the help of the MCU, realizing automatic switching of the number of output circuits and effectively improving the user experience.

[0034] See also Figure 2 The management unit 11 is the first MOSFET, which is located between the voltage input terminal and the LED strip input terminal. The base of the first MOSFET is electrically connected to the MCU.

[0035] The first MOSFET is a P-type MOSFET, with its source connected to the voltage input terminal and its drain connected to the LED strip input terminal. When the gate is connected to the MCU, the management circuit 1 works normally when the gate is low and cannot work when the gate is high. This structure allows the MCU to easily control the management circuit 1 and flexibly switch the number of output channels.

[0036] See also Figure 2 The management circuit 1 is electrically connected to the branch control unit 13, and the branch control unit 13 is connected in parallel with the management unit 11;

[0037] The branch control unit 13 is connected to the second resistor 14 and is electrically connected to the MCU.

[0038] The branch control unit 13 has a similar structure to the management unit 11, and the branch control unit 13 is connected in parallel to the management unit 11. The branch management unit 11 is electrically connected to the MCU, and the MCU can control the on and off of the branch management unit 11. When there is a problem with the working status after the light strip is connected, the MCU can turn on the branch control unit 13 to make the circuit self-test, so as to avoid the light strip not working properly due to the damage of the management unit 11.

[0039] See also Figures 1 to 2 The resistance of the second resistor 14 is much greater than that of the first resistor 12.

[0040] The resistance of the second resistor 14 connected to the branch control unit 13 is much greater than that of the first resistor 12. After the light strip is connected to the light strip input terminal, the light strip status detection unit 4 detects the connected light strip, and the MCU will first turn on the branch control unit 13. Because the resistance of the second resistor 14 is large, the current value in the branch is small. Even if the circuit itself or the light strip is damaged, it will not cause damage to other components. It can effectively protect the entire circuit and the light strip. When the light strip status is stable and the input voltage is stable, the MCU will disconnect the branch and reopen the management unit 11 so that the light strip can work normally. Through the above structure, the switching of the number of output channels can be achieved automatically, efficiently and stably.

[0041] See also Figure 2 The branch control unit 13 is a second MOSFET, which is located between the voltage input terminal and the LED strip input terminal. The base of the second MOSFET is electrically connected to the MCU.

[0042] The second MOSFET is a P-type MOSFET, with its source connected to the voltage input terminal and its drain connected to the LED strip input terminal. When the gate is connected to the MCU, the branch control unit 13 works normally when the gate is low and cannot work when the gate is high. This structure allows the MCU to easily control the branch control unit 13, improving the stability of the circuit and ensuring that the LED strip works in a stable state.

[0043] See also Figure 1 The management circuit 1 is connected to the circuit breaker protection unit 2. One end of the circuit breaker protection unit 2 is connected to the voltage input terminal, and the other end is connected to the management unit 11.

[0044] The management circuit 1 is equipped with a circuit breaker protection unit 2, which is located at the input end of the power supply. In this embodiment, the structure of the circuit breaker protection unit 2 includes multiple sets of parallel capacitors. The main line of the circuit breaker protection unit 2 is connected to the management unit 11, which can prevent damage to the equipment caused by instantaneous voltage changes when the power supply is disconnected. This structure enables the entire management system to quickly and stably connect multiple light strips and protect normally functioning components when circuit problems occur.

[0045] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" 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 circuit or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0046] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic switching circuit for the number of LED strip channels, characterized in that, include: The management circuit has a voltage input terminal at one end and a light strip input terminal at the other end. A management unit is connected to the management circuit, and a first resistor is connected to one end of the management unit and an MCU is connected to the other end. An input voltage detection unit is electrically connected to the voltage input terminal and also electrically connected to the MCU. A light strip status detection unit is electrically connected to the light strip input terminal and also electrically connected to the MCU; The management unit uses the MCU to automatically control the on / off state of the circuit based on the data transmitted in real time from the input voltage detection unit and the LED strip status detection unit. The management circuit has multiple circuits connected in parallel, and one end of each management circuit away from the LED strip input terminal is electrically connected to the voltage input terminal.

2. The automatic switching circuit for the number of LED strip channels according to claim 1, characterized in that, The management unit is a first MOS transistor, which is located between the voltage input terminal and the LED strip input terminal. The base of the first MOS transistor is electrically connected to the MCU.

3. The automatic switching circuit for the number of LED strip channels according to claim 1, characterized in that, The management circuit is electrically connected to a branch control unit, and the branch control unit and the management unit are connected in parallel. The branch control unit is connected to a second resistor and is electrically connected to the MCU.

4. The automatic switching circuit for the number of LED strip channels according to claim 3, characterized in that, The resistance of the second resistor is much greater than that of the first resistor.

5. The automatic switching circuit for the number of LED strip channels according to claim 4, characterized in that, The branch control unit is a second MOSFET, which is located between the voltage input terminal and the LED strip input terminal. The base of the second MOSFET is electrically connected to the MCU.

6. The automatic switching circuit for the number of LED strip channels according to claim 1, characterized in that, The management circuit is connected to a circuit breaker protection unit, one end of which is connected to the voltage input terminal and the other end is connected to the management unit.

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