Audio rhythm lamp control circuit

Abstract

The utility model relates to the technical field of LED control circuits, and discloses an audio rhythm lamp control circuit, comprising a power supply module used for supplying power; the audio input module is used for audio input; the audio signal processing module is used for receiving an input audio signal and generating a pulse width modulation signal for controlling the LED lamp to flicker according to the audio signal; and the LED lamp control module is connected with the output end of the audio signal processing module and is used for controlling the brightness and flicker frequency of an LED lamp through the pulse width modulation signal, so that an audio rhythm effect is realized. According to the utility model, through the arrangement of the capacitance coupling module and through the characteristics of direct current isolation and alternating current connection of a capacitor, an audio signal is processed as an alternating current signal, an audio is coupled to the audio signal processing module through the capacitor, and then the audio is input to the vehicle lamp through the audio signal processing module, so that the synchronous interaction of the vehicle lamp and the audio is realized; the analysis process of the audio chip is simplified, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of LED control circuit technology, and in particular to an audio rhythm lamp control circuit. Background Technology

[0002] In today's society, with the continuous improvement of living standards, people's demand for multifunctional and high-quality audio equipment is also increasing, and various multifunctional audio playback devices have become the mainstream in the current audio market.

[0003] Existing solutions mainly use audio receiver chips or microphones to receive audio signals, which are then processed by an audio processing chip and input to the signal terminal of the lights to achieve synchronization between the car lights and the music rhythm. However, using an audio processing chip is relatively expensive. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing an audio rhythm light control circuit.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The audio rhythm light control circuit includes:

[0007] Power module, used for power supply;

[0008] Audio input module, used for audio input;

[0009] The audio signal processing module is used to receive the input audio signal and generate a pulse width modulation signal to control the blinking of the LED light based on the audio signal.

[0010] The LED light control module is connected to the output of the audio signal processing module. It controls the brightness and flashing frequency of the LED light through the pulse width modulation signal mentioned above, thereby achieving an audio rhythm effect.

[0011] A capacitive coupling module is provided, through which the audio input module is coupled to the input terminal of the audio signal processing module.

[0012] Preferably, the power supply module is electrically connected to the audio input module, the audio signal processing module, and the LED light control module through a filtering module.

[0013] Preferably, the audio signal processing module uses a microcontroller and is electrically connected to a microcontroller programming port.

[0014] Preferably, the capacitive coupling module includes a connector for connecting to the output of the audio input module and a capacitor connected to the output of the connector, wherein the audio signal of the audio input module is connected to the input of the audio signal processing module through the capacitor.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes a capacitor coupling module to treat audio signals as AC signals by taking advantage of the capacitor's DC blocking and AC passing characteristics. The audio signal is then coupled to the audio signal processing module via the capacitor, and then input to the vehicle headlights through the audio signal processing module, achieving synchronous interaction between the headlights and the audio. This method simplifies the audio chip's decoding process and reduces costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall composition of the audio rhythm lamp control circuit proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the audio signal processing module of the audio rhythm lamp control circuit proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the audio input module of the audio rhythm lamp control circuit proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the capacitive coupling module of the audio rhythm lamp control circuit proposed in this utility model;

[0021] Figure 5 This is a schematic diagram showing the connection of the audio rhythm light control circuit proposed in this utility model to the microcontroller's programming port.

[0022] Figure 6 A schematic diagram of the power supply for the audio signal processing module of the audio rhythm lamp control circuit proposed in this utility model;

[0023] Figure 7 This is a schematic diagram of the LED light control module of the audio rhythm light control circuit proposed in this utility model. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figures 1-7 The audio rhythm light control circuit includes:

[0026] Power module V5 is used for power supply;

[0027] Audio input module, used for audio input;

[0028] The audio signal processing module is used to receive the input audio signal and generate a pulse width modulation signal to control the blinking of the LED light. Specifically, it includes: a data acquisition chip U2, one end of which, VO, is connected to the power supply module V5 for power supply. The power supply module V5 is grounded to GND through capacitors C14, C15, and C18, which serves as a filter. The other end, VI, is connected to the audio input terminal VI N+ through diode D9 for audio acquisition and is also connected to the battery BATTERY through diode D4. The ground terminal GND of the data acquisition chip U2 is grounded to GND, and the grounding wire is connected to the wire connected to D9 and VI through capacitors C12, C13, C16, and C17, which also serves as a filter.

[0029] The LED light control module is connected to the output of the audio signal processing module. It controls the brightness and flashing frequency of the LED light through the pulse width modulation signal mentioned above, thereby achieving an audio rhythm effect.

[0030] A capacitive coupling module is provided, through which the audio input module is coupled to the input terminal of the audio signal processing module.

[0031] In this embodiment, the power supply module is electrically connected to the audio input module, the audio signal processing module, and the LED light control module through the filtering module.

[0032] In this embodiment, a reset circuit module is also included, which is electrically connected to the power supply module and the audio signal processing module, and the reset circuit module is also electrically connected to the power supply module through a filter module.

[0033] In this embodiment, the capacitive coupling module includes a connector P2 for connecting to the output of the audio input module and a capacitor C6 connected to the output of connector P2. The audio signal of the audio input module is connected to the input of the audio signal processing module SI through capacitor C6. Connector P2 is compatible with the acquisition chip U2 and can use a matching 3.5mm audio plug or USB as the plug structure (i.e., the plug is on the acquisition chip U2 and the plug is on the capacitive coupling module). A diode D3, a transient suppression diode TVS1, a capacitor C10, and a resistor R6 can be connected between connector P2 and capacitor C6. The other end of capacitor C6 is connected to resistor R7. The other ends of diode D3, transient suppression diode TVS1, capacitor C10, and resistors R6 and R7 are connected together to ground GND to protect the circuit and stabilize the circuit.

[0034] After being coupled through capacitor C6 and connected to the audio signal processing module (which can be a microcontroller), the microcontroller converts the audio signal into a digital signal to control the light rhythm.

[0035] In this embodiment, the power supply module is electrically connected to the audio input module, the audio signal processing module, and the LED light control module through the filtering module. When the power supply module is connected to the audio signal processing module, the filtering module includes capacitors C24, C25, and C26. When connected to the LED light control module, the filtering module includes capacitors C59 and C60.

[0036] In this embodiment, the audio signal processing module uses a microcontroller and is electrically connected to the microcontroller programming port J1 through ports SWD-D IO and SWD-CLK. The programmed program or data is programmed into the microcontroller's internal memory so that the microcontroller can execute the program or process the data.

[0037] The LED light control module includes a processing chip U7, which connects to multiple LEDs. The power supply module V5 is connected to the processing chip U7 and the microcontroller's FLT port via resistors R23 and R38, to the processing chip U7 and the microcontroller's SCL1 port via resistors R24 and R40, and to the processing chip U7 and the microcontroller's SDA1 port via resistors R25 and R41. The resistors limit current to prevent damage to the chips.

[0038] In use, this circuit utilizes a capacitor coupling module. Leveraging the capacitor's DC-blocking and AC-passing characteristics, when an audio signal is input, it is treated as an AC signal. The audio signal is then coupled to the audio signal processing module via the capacitor, and subsequently input to the vehicle headlights (i.e., the LEDs shown in the diagram) through the audio signal processing module and the LED control module. This achieves synchronous interaction between the headlights and the audio signal. This method simplifies the audio chip's processing, eliminating the need for a specific audio chip module; it can be implemented using a microcontroller, thus reducing costs.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An audio beat lamp control circuit, characterized by: The utility model relates to a kind of audio frequency pulsating LED lamp, including: Power module for power supply; Audio input module for audio input; Audio signal processing module for receiving input audio signal, and according to audio signal, generate pulse width modulation signal for controlling LED lamp to flash; LED lamp control module is connected with the output end of audio signal processing module, and the brightness and the flashing frequency of LED lamp are controlled by the above-mentioned pulse width modulation signal, so as to realize audio rhythm effect; Capacitive coupling module, the audio input module is coupled to the input end of audio signal processing module by capacitive coupling module.

2. The audio beat light control circuit according to claim 1, characterized in that: The power module is electrically connected with audio input module, audio signal processing module and LED lamp control module respectively by filtering module.

3. The audio beat light control circuit according to claim 1, characterized in that: The audio signal processing module uses single-chip microcomputer, and is electrically connected with single-chip microcomputer burning port.

4. The audio beat light control circuit according to claim 1, characterized in that: The capacitive coupling module includes a plug-in part for connecting the output end of audio input module and a capacitor connected to the output end of plug-in part, and the audio signal of audio input module is connected to the input end of audio signal processing module through the capacitor.

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