基于ARM的车载声像记录仪的设计

The design of sound and image recorder for coach based on ARM

在分析比较当前国内外汽车行驶状态记录仪的基础上,提出了应用于长途客运班车的车载声像记录仪方案。基于ARM平台移植了Linux操作系统,并使用MJPEG运动图像压缩算法,将采集的JPEG图像合成为AVI格式的流媒体,从而完成了声像信息的实时采集。

On the basis of the comparison with domestic and foreign auto car driving status recorder, this paper proposes blue print of sound and image recorder for coach which can be applied to management of long-distance passenger transport regular bus.Then transplant Linux to ARM, Together with the use of compressing algorithm of MJPEG moving image, the sampled image is compose to flow media of AVI format, which complete the real-time sampling of audio and image information.