分布式测试系统中GPS同步方案研究
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摘要
时钟同步是分布式测试系统的核心技术之一,时钟同步的实现将使得各个分布式测试终端能够实现自主的数据采集,显著地提高测试的效率和精度。地下爆炸效能参数分布式测试范围广,需要分布在不同位置上的震动传感器异地同步采集震动数据,以GPS系统实时时钟为基础,将高精度计时信息叠加到所采集的数据中,使试验数据能进行时间对准,为数据的后期处理提供参数。该方案具有体积小巧、全天候、干扰小等优点,特别适宜于大范围多测点的地震动测试试验场合。
As a key technology in distributed systems clock synchronization allows all terminals to achieve data acquisition separately,which significantly improves the efficiency and accuracy of the measurement.Underground explosion performance parameter distributed test range is wide,which need the vibrations sensor distributed in different locations to collect vibration data synchronously,with GPS system in real time clock as the foundation,superimpose the high precision timing information to the collected data and make test data be the time alignment for data of post processing to provide parameter.The scheme has the advantages of compact size,all-weather,small interference etc.especially suitable for a wide range of multi-point ground vibration test situation.
As a key technology in distributed systems clock synchronization allows all terminals to achieve data acquisition separately,which significantly improves the efficiency and accuracy of the measurement.Underground explosion performance parameter distributed test range is wide,which need the vibrations sensor distributed in different locations to collect vibration data synchronously,with GPS system in real time clock as the foundation,superimpose the high precision timing information to the collected data and make test data be the time alignment for data of post processing to provide parameter.The scheme has the advantages of compact size,all-weather,small interference etc.especially suitable for a wide range of multi-point ground vibration test situation.
引文
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[2]林华.多传感器数据融合中的数据预处理技术[J].海军工程大学学报,2002,14(3):33-34.
[3]阳继军.基于GPS授时的地震采集系统同步系统设计[J].石油仪器,2009,23(1):82-87.
[4]周鹏,茹东生,赵时.世界主要几种卫星导航系统的性能对比[J].中国科技信息,2012(12):62.
[5]刘基余.GPS卫星导航定位原理与方法[M].北京:科学出版社,2003.
[6]Ublox Inc.RCB-4H ANTARIS4Programmable GPS Receiver Board with SuperSense[Z].http://img1.afzhan.com/5/20090709/633827509184843750.pdf.
[7]刘胜旋,林勇,黄辰虎.1PPS时间同步对多波束测深质量的影响[J].海洋测绘,2011,31(2):31-33.
[8]黄翔,江道灼.GPS同步时钟的高精度守时方案[J].电力系统自动化,2010,34(18):74-77.
[9]丁天宝,吕启元.用GPS技术实现试验数据同步采集[J].火炮发射与控制学报,2007(3):20-23.
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