The invention relates to the technical field of automobile noise reduction, in particular to an automobile intelligent partition active noise reduction control system and method. The automobile intelligent partition active noise reduction control system comprises a vehicle-mounted power supply, a CAN bus, a noise reduction reference signal, an error microphone signal and a position information recognition device. An error microphone signal is obtained through an error microphone, in-vehicle noise information is provided for the system, the in-vehicle noise state is monitored in real time, and the position information recognition device is used for providing vehicle driver and passenger position information for the system part and selecting a proper noise reduction mode; an active noise reduction convergence coefficient suitable for the noise reduction mode and weight coefficients of all positions are matched through a self-adaptive intelligent partition noise reduction algorithm, noise reduction sound wave signals with the same frequency, the same amplitude and the opposite phase as the noise in the vehicle are generated, and the noise reduction sound wave signals are provided for the output part to make sounds; and intelligent partition active noise reduction control according to the position information of the driver and passengers is realized, so that the optimal active noise reduction effect of the vehicle under the condition of different drivers and passengers is obtained, the energy consumption of the vehicle is greatly reduced, and the product durability is improved.
本发明涉及汽车降噪技术领域,具体是汽车智能分区主动降噪控制系统及方法。包括车载电源、CAN总线、降噪参考信号、误差麦克信号和位置信息识别装置;通过误差麦克获取误差麦克信号,为系统提供车内噪声信息,实时监测车内噪声状态,位置信息识别装置,用于为系统部分提供车辆驾乘人员位置信息,选择合适的降噪模式;通过自适应智能分区降噪算法匹配适合该降噪模式的主动降噪收敛系数和各位置权重系数,产生与车内噪声频率相同、幅值相同、相位相反的降噪声波信号,并提供给输出部分发出声音,实现根据驾乘人员位置信息的智能分区主动降噪控制,以获得车辆在不同驾乘人员情况下的最优主动降噪效果,大幅降低汽车能耗,提升产品耐久性。
Automobile intelligent partition active noise reduction control system and method
汽车智能分区主动降噪控制系统及方法
2021-11-02
Patent
Electronic Resource
Chinese
IPC: | G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION , Übertragung digitaler Information, z.B. Telegrafieverkehr |
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