摘要
为适应某高炮靶场试验需要,设计了一种基于GPS守时的多通道数据采集标时系统,通过串口接收数据的同时为数据打上时间戳。系统通过多通道采集数据,支持RS232、RS422、RS485、光纤等多串口协议,且各通道波特率可分别设置;系统由GPS获得精确的秒级时间,毫秒级时间采用分频技术由内部定时器提供,并由GPS秒脉冲实时校正。试验表明,该系统能够满足多通道数据采集与标时的要求,性能安全、可靠。
According to the requirements of the range test,a real time data acquisition and time labeled system is designed in this paper.Every byte acquired from the serial ports can be labeled the accurate time.Multi-channel data can be acquired synchronous and asynchronous by multi serial ports communication protocol,such as RS232,RS422 and RS485,and it＇s channel baud rate can be set respectively.In the system,the time got from GPS can be accurated at second level,and the millisecond time can be obtained from the internal timer.The internal timer is adjusted by the pulses per second（PPS）signals of GPS.The experiment indicateds that this system can satisfy multi-channel serial data acquisition and label the real time on the data,and its performance is secure and reliable.
出处
《国外电子测量技术》
2011年第3期29-32,36,共5页
Foreign Electronic Measurement Technology
