摘要
轨道梁检测是高速列车安全运行的重要保证。轨道梁检测要求检测频率达到200—1000HZ，同时要求所有32路通道同步采集数据，并且要达到16位的A／D转换精度。通过对系统参数的分析，使用单张32通道单A／D数据采集卡进行伪同步数据采集，即使在1000HZ的采集频率下其一个周期的采集范围也不超过激光探头的光斑直径。这样就不必采用昂贵的同步设备，从而大大节约了数据采集系统的费用。
Guideway inspection is very important to keep safe in the running of high speed train. Special requirement in high speed guide way inspection including inspection frequency up to 200-1000HZ, synchronization in 32 channels and 16 bits A/D conversion are considered in this paper. After system parameter analysis, we found it＇s possible to limit acquisition range not exceeding light spot of laser sensor by psudo-synchronous data acquisition with a single A/D converter, 32-channel card, even under acquisition frequency of 1000HZ. Thus, expensive synchronous equipment is not necessary and large expense is saved.
出处
《微计算机信息》
2009年第14期69-70,66,共3页
Control & Automation
关键词
数据采集
同步
多通道
高速列车
data acquisition
synchronization
multi-channel
high speed train
guide way
