分布式多通道数据采集系统中的一种串行并发总线

A Serial Concurrent Bus Designed for Distributed Multi-channel Data Acquisition System

提出了一种适用于分布式多通道数据采集系统的串行并发总线,实现了系统的命令同步,数据有序实时传输。该总线具有同步性好、传输数据率高、物理实现简单、扩展性强等优点。实际测试结果显示,该总线在150 m距离上实现了12.288 MBps的传输数率,在13个间隔50 m分布的采集单元之间达到了好于80 ns的同步精度,充分证明了该总线方案的可行性、可靠性。经过简单的改动,该方案便可以应用于其他类似的数据采集系统中。

Introduced a Serial Concurrent Bus which can be applied to distributed multi--channel data ac- quisition system to ensure the synchronization, timeliness and ordering of the system. Serial Concurrent Bus has the advantages such as good synchronization, high data rates, simple realization, and strong ex- tensibility, Results of the tests show that the Serial Concurrent Bus implements data rates of 12. 288M Bps over 150 m, and achieves a less than 80 ns synchronous error between 13 sampling modules which are 50 m apart from each other, well proved the feasibility and the reliability of solution. With little modification, it can be applied to other similar data acquisition systems.