射频信号调节车载多媒体音量系统的设计和实现

Design and implementation of RF signal regulated vehicle multimedia volume system

设计了一个信号驱动控制装置和系统,通过感应电路与放大电路,接收手机射频信号,同时也将信号进行放大,进而实现自动调节车载多媒体音量。通过实验发现,该系统能自动降低车载多媒体音量,成功率达98%以上。同时,将该系统在现代汽车上实现。该系统的实现可避免乘车人员因车载多媒体音量过大而漏接电话,保证通话质量,避免驾驶员手动操作音量旋钮,提高行驶安全性。

We designed a drive signal control devices and systems,by sensing circuit and the amplification circuit for receiving cell phone radio signal,but also amplifies the signal,and then automatically adjust the volume of car multimedia.Experiments found that the car multimedia system can automatically reduce the volume,the success rate of98%.At the same time,the system is implemented on a modern automobile.Implementation of the system can be avoided due to the passenger car multimedia sound and excessive dropped calls,call quality assurance,to avoid the driver＇s manual operation of the volume knob,improve driving safety.