An LED light bar detection circuit

Abstract

The utility model discloses a kind of LED light bar detection circuit, including main power supply voltage reduction circuit, single-chip microcontroller, detection circuit, light bar voltage conversion circuit and light bar interface circuit;The output end of the main power supply voltage reduction circuit is connected with the power input end of single-chip microcontroller, light bar voltage conversion circuit input end respectively, the I / O interface end of single-chip microcontroller is connected with detection circuit input end, the output end of detection circuit is connected with light bar interface circuit input end, the serial port end of single-chip microcontroller is connected with light bar interface circuit, the output end of the light bar voltage conversion circuit is connected with light bar interface circuit, light bar interface circuit is connected with the light bar to be detected.The utility model can automatically detect each index of LED light bar by single-chip microcontroller, reduce artificial error, improve product quality, improve detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of LED light strip detection technology, specifically to an LED light strip detection circuit. Background Technology

[0002] After LED light strips are manufactured, their current, light intensity, color temperature, and other indicators need to be tested to ensure quality. Currently, this testing is mainly done manually using tools such as multimeters. This method is highly subjective, labor-intensive, prone to errors, and produces many defective products, so improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide an LED light strip detection circuit to solve the problems existing in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an LED strip detection circuit, comprising a main power supply step-down circuit, a microcontroller, a detection circuit, a strip voltage conversion circuit, and a strip interface circuit; the output terminal of the main power supply step-down circuit is connected to the power input terminal of the microcontroller and the input terminal of the strip voltage conversion circuit, respectively; the I / O interface terminal of the microcontroller is connected to the input terminal of the detection circuit; the output terminal of the detection circuit is connected to the input terminal of the strip interface circuit; the serial port terminal of the microcontroller is connected to the strip interface circuit; the output terminal of the strip voltage conversion circuit is connected to the strip interface circuit; and the strip interface circuit is connected to the strip to be detected.

[0005] As a preferred embodiment of this technical solution, it also includes an external conversion circuit and an external device interface. The input terminal of the external conversion circuit is connected to the output terminal of the main power supply step-down circuit, the output terminal of the external conversion circuit is connected to the external device interface, and the I / O interface terminal of the microcontroller is connected to the external device interface.

[0006] As a preferred embodiment of this technical solution, the detection circuit uses a transistor to amplify the detection signal of the light strip, uses a diode to prevent reverse current, and uses a diode in the light strip interface circuit for signal isolation protection.

[0007] As a preferred embodiment of this technical solution, the microcontroller is equipped with a reset circuit.

[0008] As a preferred embodiment of this technical solution, the microcontroller's serial port is connected to an external detection computer to achieve remote monitoring, data transmission, and statistics.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. It can automatically detect various indicators of LED light strips through a microcontroller, reducing human error and improving detection efficiency.

[0011] 2. Reduce labor intensity, decrease defect rate, achieve automated monitoring, and improve product quality and production efficiency.

[0012] 3. Implement hierarchical power conversion to ensure stable power supply to each part, and prevent mutual interference by isolating different power modules.

[0013] 4. The detection circuit improves the sensitivity of the light bar signal detection, ensuring safe and reliable detection.

[0014] 5. The LED strip interface circuit enables independent power supply and data communication, ensuring that each module operates independently without interference, thus improving system stability. Attached Figure Description

[0015] Figure 1 This is a connection diagram of the present invention.

[0016] Figure 2 This is the main power supply step-down circuit diagram of this utility model.

[0017] Figure 3 This is a schematic diagram of the microcontroller of this utility model.

[0018] Figure 4 This is a circuit diagram of the LED strip voltage conversion circuit of this utility model.

[0019] Figure 5 This is the detection circuit diagram of this utility model.

[0020] Figure 6 This is the external conversion circuit diagram of this utility model.

[0021] Figure 7 This is a diagram of the external device interface of this utility model. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-7This utility model discloses an LED strip detection circuit, comprising a main power supply step-down circuit, a microcontroller, a detection circuit, a strip voltage conversion circuit, and a strip interface circuit. The main power supply step-down circuit is used to step down the external power input to this utility model. The output terminal of the main power supply step-down circuit is connected to the power input terminal of the microcontroller and the input terminal of the strip voltage conversion circuit, respectively, for powering the microcontroller and the strip voltage conversion circuit. The I / O interface terminal of the microcontroller is connected to the input terminal of the detection circuit, the output terminal of the detection circuit is connected to the input terminal of the strip interface circuit, the serial port terminal of the microcontroller is connected to the strip interface circuit, the output terminal of the strip voltage conversion circuit is connected to the strip interface circuit, and the strip interface circuit is connected to the strip to be detected.

[0024] In this specific implementation, the main power supply step-down circuit uses a CL7805, the microcontroller uses an STC8G1K08, the transistor is a 3904, Q1 is a MOSFET, and the LED strip voltage conversion circuit uses a PW6218A30 chip. It also includes an external conversion circuit and an external device interface. The input terminal of the external conversion circuit is connected to the output terminal of the main power supply step-down circuit, and the output terminal of the external conversion circuit is connected to the external device interface. The I / O interface of the microcontroller is connected to the external device interface. The detection circuit uses a transistor to amplify the LED strip signal, a diode to prevent reverse current, and a resistor for current limiting and voltage division. Those skilled in the art can connect the detection circuit according to the attached drawings; it will not be described in detail here. The LED strip interface circuit uses a diode for signal isolation protection and adopts existing technology. The microcontroller has a reset circuit. The microcontroller's serial port connects to an external detection computer to achieve remote monitoring, data transmission, and statistics.

[0025] Finally, it should be noted that the above-described embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model. These modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An LED light strip detection circuit, characterized in that: It includes a main power supply step-down circuit, a microcontroller, a detection circuit, a lamp strip voltage conversion circuit, and a lamp strip interface circuit. The output of the main power supply step-down circuit is connected to the power input of the microcontroller and the input of the lamp strip voltage conversion circuit. The I / O interface of the microcontroller is connected to the input of the detection circuit. The output of the detection circuit is connected to the input of the lamp strip interface circuit. The serial port of the microcontroller is connected to the lamp strip interface circuit. The output of the lamp strip voltage conversion circuit is connected to the lamp strip interface circuit. The lamp strip interface circuit is connected to the lamp strip to be detected.

2. The LED strip detection circuit according to claim 1, characterized in that: It also includes an external conversion circuit and an external device interface. The input terminal of the external conversion circuit is connected to the output terminal of the main power supply step-down circuit, the output terminal of the external conversion circuit is connected to the external device interface, and the I / O interface terminal of the microcontroller is connected to the external device interface.

3. The LED strip detection circuit according to claim 1, characterized in that: The detection circuit uses a transistor to amplify the detection signal of the light strip, and a diode to prevent reverse current. The light strip interface circuit also uses a diode for signal isolation protection.

4. The LED strip detection circuit according to claim 1, characterized in that: The microcontroller is equipped with a reset circuit.

5. The LED strip detection circuit according to claim 1, characterized in that: The microcontroller's serial port is connected to an external testing computer to enable remote monitoring, data transmission, and statistics.

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