摘要
介绍了根据中国船级社《船载航行数据记录仪检验指南》而设计的VDR音频采集记录子系统.主要由混音电路板、多通道语音采集卡和传声器功能自检模块组成,系统实现语音信号采集、编码、压缩后,由主控制器控制音频数据存储至受保护的存储单元,并定时对语音通道进行自检,若发生故障,则通过报警模块显示报警.
This paper introduces the design of VDR audio sampling and recording subsystem according to Test Guide of Voyage Data Recorder of CCS. The system mainly consists of audio mixer,multi-channel acquiring card and microphone self-test module. After being audio acquired ,coded ,compressed, its main controller saves audio data in protected storage unit. And it tests the audio channels periodically. If an error occurs, alarm will be driven on alarm unit.
出处
《武汉理工大学学报（交通科学与工程版）》
2005年第4期610-612,共3页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
湖北省科技攻关项目资助(批准号:2003101C02)
