无线集散型分布式测试系统及其定时与同步研究
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摘要
针对野外中远程分布式测试的应用,介绍了无线集散型分布式测试系统(WSG-DTS)的结构。提出WSG-DTS的关键是无线扩展仪器,它主要由总线桥、模块化仪器构成。介绍了总线桥的软件无线电和SOPC的实现方法。给出了WXI的定时与同步原理,理论和仿真表明无线扩展仪器的定时与同步性能好于B类LXI,能够满足大多数野外中远程分布式测试的要求。
The wireless scatter/gather distributed testing system(WSG-DTS) framework which refers to the field remote distributed tests was introduced.The wireless extensions for instumentaion(WXI) was the key component to the WSG-DTS,and it mainly consisted of the bus bridges and the modular instruments.The methods of wireless bus bridges implementation based on the soft defined radio(SDR) and system on programmed chip(SOPC) were presented.Discussing the principle of WXI's timing and synchronization(T & S),the theoretical research and simulation shows that the WXI's T & S performance is better than LXI B class.Hence,in many case this WXI can meet the field remote distributed test requirements.
The wireless scatter/gather distributed testing system(WSG-DTS) framework which refers to the field remote distributed tests was introduced.The wireless extensions for instumentaion(WXI) was the key component to the WSG-DTS,and it mainly consisted of the bus bridges and the modular instruments.The methods of wireless bus bridges implementation based on the soft defined radio(SDR) and system on programmed chip(SOPC) were presented.Discussing the principle of WXI's timing and synchronization(T & S),the theoretical research and simulation shows that the WXI's T & S performance is better than LXI B class.Hence,in many case this WXI can meet the field remote distributed test requirements.
引文
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[2]孙玉滨,叶柳.桥梁检测数据的GPRS无线传输.黑龙江水利科技,2006,34(5):5-7.
[3]张又进,唐光武,黄福伟.桥梁测试无线遥测同步数据采集系统.公路交通技术,2002(3):46-48.
[4]陈永江,徐纯森,蔡敏,等.基于WSN技术的燃气表远程抄表.仪表技术与传感器,2007(4):66-67,75
[5]DANY C.Instrument connectivity through mixed I/O test systems.AUTOTESTCON2003 Proceedings,IEEE:502-504.
[6]National Instruments T-Clock Technology for Timing and synchroniza-tion of Modular Instruments[EB/OL].http://zone.ni.com/dev-zone/cda/tut/p/id/3675.
[7]FFTMegaCore Function User Guide[EB/OL].http://www.altera.com
[8]WEIBEI H,BECHAZ D.Implementation and performance of timestamping techniques.2004 Conference on IEEE 1588.
[9]JASPEMEITE J,SHEHAB K,WEBER K.Enhancements to the timesynchronization standard IEEE-1588 for a System of Cascaded Bridg-es.IEEE International Workshop on Factory Communication SystemsProceedings,2004.IEEE:239-244.
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