A control method and device for sporadic abnormal noise applied to vehicle acoustic devices

A technology of an acoustic device and a control method, which is applied in general control systems, program control, control/regulation systems, etc., and can solve problems such as complex automotive systems
CN112506171BActive Publication Date: 2022-02-15SHANGHAI HEQIAN ELECTRONICS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI HEQIAN ELECTRONICS TECH CO LTD
Publication Date
2022-02-15

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Abstract

The present invention provides a control method and device for sporadic abnormal noise applied to vehicle acoustic devices. After the vehicle is powered on through the ACC or the CAN wakes up the MCU, the MCU executes the power amplifier and the DSP is initialized, and after the mute is performed, the MCU releases the DSP. And the mute of the power amplifier, the monitoring process monitors the signal traffic received by the MCU in real time and performs traffic statistics within a preset time period, and compares the traffic statistics results with the preset threshold to determine whether to enforce the normal dog feeding process Dog feeding operation: the present invention can solve the technical problem of the abnormal sound caused by the abnormal reset of the watchdog because the dog feeding process cannot be executed in time, but the system is under normal operating conditions.
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Description

technical field

[0001] The invention relates to the field of automobile acoustics, in particular to a control method and device for sporadic abnormal noise applied to vehicle acoustic devices. Background technique

[0002] With the increasing demand for comfort, informatization, and intelligent functions of automobiles, the requirements for in-vehicle infotainment are also getting higher and higher. Many high-end automobiles are equipped with luxury audio systems. In the multiple array speaker system test platforms, although the product has been tested hundreds to thousands of times before leaving the factory, the sound of the entire system is displayed normally, and there is no abnormal sound problem. The tested acoustics are assembled into the vehicle After hundreds of tests, it still shows normal. However, due to some sporadic and unpredictable factors, the vehicle will make abnormal noise. For example, after the vehicle is powered on through the ACC, after the person l...

Claims

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