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Active control noise reduction method and system for interior noise of automobile

An active control system, active control technology, applied in vehicle components, circuits or fluid pipelines, transportation and packaging, etc., can solve the problem of inability to eliminate, inability to reduce vehicle structure noise, wind noise, and inability to effectively reduce vehicle interior noise. and other problems, to achieve the effect of improving sound quality, reducing interference, and comfortable riding environment

Inactive Publication Date: 2018-08-21
上海迪彼电子科技有限公司
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Problems solved by technology

[0003] The current active noise reduction technology focuses on the contribution of engine noise to the interior noise, but it is still impossible to eliminate the interior noise of the vehicle caused by road noise and wind noise.
Patent announcement number CN106089361, announcement date 2016.11.9, titled "An Active Noise Reduction System and Method for In-vehicle Engines", which reduces the interior noise generated by the engine by extracting the engine speed, but cannot also reduce noise from the road surface The structural noise of the vehicle generated by the excitation, the wind noise generated by the air flow on the surface of the vehicle body, etc., cannot effectively reduce the noise inside the vehicle in all directions

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Embodiment Construction

[0031] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0032] An active control noise reduction system for vehicle interior noise, which includes: a vehicle information identification system, which is used to receive signals from various systems in the CAN network communication of the vehicle, judge the vehicle status, complete initialization detection, and transmit the ANC start signal to the active Control system; vehicle interior environment monitoring system, used to monitor the sound energy of each key point in the vehicle, and real-time monitoring of the noise inside the vehicle; vehicle vibration collection system, used to collect vibration signals of key points of the vehicle body, and input the collected vibration signals to The active control system is used as a reference input for active con...

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Abstract

The invention discloses an active control noise reduction method and system for interior noise of an automobile. The system comprises a vehicle information identification system, an interior environment monitoring system, a vehicle vibration collecting system and an active control system. By utilizing an active control method, the disturbance of structural noise caused by engine excitation and road excitation to interior passengers is effectively reduced, the interior sound quality of the automobile is greatly improved, and more comfortable riding environment is provided for the passengers.

Description

technical field [0001] The invention relates to the technical field of automobile active noise reduction, in particular to an active control noise reduction method and system for automobile interior noise. Background technique [0002] As the car becomes one of the main means of transportation for personal travel, the car increasingly carries passengers' higher expectations for comfort. Powertrain noise, road noise, and especially wind noise have become the focus of customers' attention. In the current car design process, active control has become a new technology car to reduce the noise inside the car, and it is possible to further improve the noise inside the car. [0003] The current active noise reduction technology focuses on the contribution of engine noise to the interior noise, but it is still impossible to eliminate the interior noise of the vehicle caused by road noise and wind noise. Patent announcement number CN106089361, announcement date 2016.11.9, titled "An...

Claims

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Application Information

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IPC IPC(8): B60R16/037
CPCB60R16/0373
Inventor 台卫华代意坤庞立红朱丽平张正
Owner 上海迪彼电子科技有限公司
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