LED fantasy color lamp band control circuit

Abstract

The utility model discloses a control circuit of an LED fantasy color lamp band. The control circuit comprises a communication circuit, a working circuit and a light-emitting circuit. The working environment comprises a controller and a lamp strip, the controller is connected with the lamp strip through a transmission line, a main control chip and a communication circuit are arranged in the controller, and a working circuit and a light-emitting circuit are arranged in the lamp strip. The controller controls the lamp strip to work by means of a DMX512 protocol through a transmission line, and a working circuit in the lamp strip controls the light-emitting circuit through a TTL protocol, so that the long-distance control of the controller and the lamp strip has relatively strong anti-interference capability, external electromagnetic interference can be effectively resisted, and the stability and accuracy of color control of the LED lamp strip in a complex electromagnetic environment are ensured.

Description

Technical Field

[0001] This utility model relates to the field of lighting fixtures, and in particular to a control circuit for LED RGB light strips. Background Technology

[0002] In the current lighting market, LED light strips are widely used in commercial displays, home decoration, stage performances, and many other fields due to their advantages such as energy saving, long lifespan, and rich colors. As people's requirements for lighting effects continue to increase, LED light strips that can achieve iridescent effects are receiving more and more attention.

[0003] However, traditional LED color-changing light strips have many problems with signal transmission. Currently, LED color-changing light strips on the market use TTL signal transmission, achieving basic light color changes by directly connecting the controller to the light strip. However, TTL signal transmission has poor anti-interference capabilities. In environments with electromagnetic interference sources (such as large electrical equipment, wireless communication equipment, etc.), the signal is prone to distortion, seriously affecting the lighting effect and failing to meet the requirements of places with high lighting stability. Utility Model Content

[0004] The main purpose of this utility model is to provide an LED color strip control circuit that uses the DMX512 protocol for data transmission and control, thereby having strong anti-interference capabilities, effectively resisting external electromagnetic interference, ensuring the stability and accuracy of LED strip color control in complex electromagnetic environments, and avoiding problems such as color abnormalities and flickering.

[0005] This utility model proposes an LED RGB light strip control circuit, including a communication circuit, a working circuit, and a light-emitting circuit;

[0006] The communication circuit includes a communication chip U1, resistors R1, R2, R3, R4, R5 and R6, and a capacitor C8. The VDD pin of the communication chip U1 is connected to the power supply circuit through resistor R1, and the VDD pin of the communication chip U1 is also grounded through capacitor C8. The three input pins of the communication chip U1, BI, AI and ADRI, are connected to the main control chip of the controller. The two output pins of the communication chip U1, ADRO and DO, are connected to one end of resistors R2 and R3, respectively.

[0007] The working circuit includes a control chip U2, resistors R7, R9 and R31, and capacitor C2. The VDD pin of the control chip U2 is connected to the power supply circuit through resistor R9. The VDD pin of the control chip U2 is also grounded through capacitor C2. The DIN and DOUT input pins of the control chip U2 are connected to the other ends of resistors R3 and R2 through resistors R37 and R31, respectively, thereby connecting the control chip U2 to the communication chip U1.

[0008] The light-emitting circuit includes three groups of LED light-emitting beads in red, green and blue colors. The three output pins of the control chip U2, OUTR, OUTG and OUTB, are connected to the three groups of LED light-emitting beads, and the control chip U2 can control the operation of the three groups of LED light-emitting beads.

[0009] The communication circuit and the working circuit transmit data via the DMX512 protocol, and the working circuit and the light-emitting circuit transmit data via the TTL protocol.

[0010] Preferably, the communication chip U1 is model TM512AC0.

[0011] Preferably, the control chip U2 is model SM16703.

[0012] Preferably, the LED light-emitting lamp bead group includes multiple lamp beads and a protection resistor, and the lamp beads and the protection resistor are connected in series.

[0013] The beneficial effects of the LED color-changing light strip control circuit of this utility model are as follows:

[0014] 1. The transmission distance between the communication circuit and the working circuit is longer. The use of the DMX512 protocol for data transmission can effectively resist external electromagnetic interference and ensure the stability and accuracy of LED light strip color control in complex electromagnetic environments.

[0015] 2. Data transmission between the working circuit and the light-emitting circuit is performed using the TTL protocol, which is compatible with existing light-emitting circuits. Attached Figure Description

[0016] Figure 1 This is a structural block diagram of the LED color-changing light strip control circuit of this utility model;

[0017] Figure 2 This is a circuit diagram of the communication circuit of the LED RGB light strip control circuit of this utility model;

[0018] Figure 3 The circuit diagram shows the working circuit of the LED RGB light strip control circuit of this utility model.

[0019] Figure 4 This is a circuit diagram of the light-emitting circuit of the LED color-changing light strip control circuit of this utility model;

[0020] Figure 5 This is a schematic diagram of the wiring connections between the LED strips in the LED color-changing light strip control circuit of this utility model;

[0021] The diagram is labeled as follows: 1. Controller, 2. LED strip, 11. Main control chip, 12. Communication circuit, 21. Working circuit, 22. Light-emitting circuit.

[0022] 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

[0023] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0024] Reference Figures 1 to 5 An embodiment of the LED RGB light strip control circuit of this utility model is proposed:

[0025] An LED color-changing light strip control circuit includes a communication circuit 12, a working circuit 21, and a light-emitting circuit 22.

[0026] The working environment includes a controller 1 and multiple light strips 2. The controller 1 is connected to the light strips 2 through a transmission line. The controller 1 is equipped with a main control chip 11 and a communication circuit 121. The light strips 2 are equipped with a working circuit 21 and a light-emitting circuit 22.

[0027] The communication circuit 12 includes a communication chip U1, resistors R1, R2, R3, R4, R5, and R6, and a capacitor C8. The VDD pin of the communication chip U1 is connected to the power supply circuit through resistor R1, and is also grounded through capacitor C8. The BI, AI, and ADRI input pins of the communication chip U1 are connected to the output pins of the main control chip 11. The ADRO and DO output pins of the communication chip U1 are connected to one end of resistors R2 and R3, respectively. The communication chip U1 is a TM512AC0.

[0028] The working circuit 21 includes a control chip U2, resistors R7, R9 and R31, and capacitor C2. The VDD pin of the control chip U2 is connected to the power supply circuit through resistor R9. The VDD pin of the control chip U2 is also grounded through capacitor C2. The DIN and DOUT input pins of the control chip U2 are connected to one end of the transmission line through resistors R37 and R31, respectively. The other end of the transmission line is connected to the other end of resistors R3 and R2 of the communication circuit 12, thereby connecting the control chip U2 and the communication chip U1.

[0029] The light-emitting circuit 22 includes three LED light-emitting lamp groups of red, green, and blue colors. Each LED light-emitting lamp group includes multiple lamps and a protection resistor, which are connected in series. The three output pins OUTR, OUTG, and OUTB of the control chip U2 are connected to the three LED light-emitting lamp groups, enabling the control chip U2 to control the operation of the three LED light-emitting lamp groups.

[0030] The controller 1 drives the communication chip U1 to control the light strip 2 through the transmission line using the DMX512 protocol. The working circuit 21 inside the light strip 2 controls the light-emitting circuit 22 through the TTL protocol. This gives it strong anti-interference capability in long-distance control of the controller 1 and the light strip 2, effectively resisting external electromagnetic interference and ensuring the stability and accuracy of LED light strip color control in complex electromagnetic environments.

[0031] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. An LED fantasy lamp strip control circuit, characterized in that, it comprises a communication circuit, a working circuit and a light-emitting circuit; the communication circuit comprises a communication chip U1, resistors R1, R2, R3, R4, R5 and R6, and a capacitor C8, the VDD pin of the communication chip U1 is connected with a power supply circuit through the resistor R1, the VDD pin of the communication chip U1 is also grounded through the capacitor C8, the BI, AI and ADRI three input pins of the communication chip U1 are connected with a master control chip of a controller, the ADRO and DO two output pins of the communication chip U1 are respectively connected with one end of the resistors R2 and R3; the working circuit comprises a control chip U2, resistors R7, R9 and R31, and a capacitor C2, the VDD pin of the control chip U2 is connected with the power supply circuit through the resistor R9, the VDD pin of the control chip U2 is also grounded through the capacitor C2, the DIN and DOUT two input pins of the control chip U2 are respectively connected with the other end of the resistors R3 and R2 through the resistor R37 and the resistor R31, so as to connect the control chip U2 with the communication chip U1; the light-emitting circuit comprises three LED light-emitting lamp bead groups of red, green and blue colors, the OUTR, OUTG and OUTB three output pins of the control chip U2 are connected with the three LED light-emitting lamp bead groups, so as to control the three LED light-emitting lamp bead groups to work through the control chip U2; the communication circuit and the working circuit transmit data through the DMX512 protocol, and the working circuit and the light-emitting circuit transmit data through the TTL protocol.

2. The LED fantasy light string control circuit of claim 1, wherein, The model of the communication chip U1 is TM512AC0.

3. The LED fantasy light string control circuit of claim 1, wherein, The model of the control chip U2 is SM16703.

4. The LED fantasy light string control circuit of claim 3, wherein, The LED light-emitting lamp bead group comprises a plurality of lamp beads and a protection resistor, and the lamp beads and the protection resistor are connected in series.

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