无线数据采集时间同步协议研究与工程应用

英文篇名：Research and application of the wireless data acquisition protocol
中文刊名：电子设计工程
英文刊名：Electronic Design Engineering
作者：任际周 ; 王洪辉 ; 庹先国 ; 张贵宇
英文作者：REN Ji-zhou1 ; WANG Hong-hui1 ; TUO Xian-guo1 ; 2 ; ZHANG Gui-yu1(1.College of Information Engineering ; Chengdu University of Technology ; Chengdu 610059 ; China ; 2.State Key Laboratory of Geohazard Prevention & Geoenvironment Protection ; Chengdu 610059 ; China)
中文关键词：地质勘探 ; 弹性波 ; 无线数据采集 ; 时间同步 ; nRF905
英文关键词：geological survey ; elastic wave ; wireless data acquisition ; time synchronization ; nRF905
出版日期：2011-01-20
机构：成都理工大学信息工程学院;地质灾害防治与地质环境保护国家重点实验室;
年：2011
期：02
出版单位：电子设计工程

摘要

无线通信技术给工程地质勘探带来便利的同时,也造成了各采集通道之间的时间同步难题,为此,采用nRF系列无线收发芯片组建工程地质勘探无线数据采集网络,并研究了无线同步协议。重点分析了无线时间同步误差来源,提出了提高时间同步精度的措施,并详细描述了配套的系统硬件、软件组成与实现方法,通过某地质调查项目实际工程应用对系统进行了检验。结果表明,实现了500 m近距离无误码无线数据采集,时间同步误差控制在2μs以内,同时提高了工作效率,工作时间缩短到有线方式的1/3。
Wireless communications technology not only brings the convenience to engineering geology exploration,but also causes the time synchronization problem in the acquisition channel.Therefore,the paper used the nRF series of wireless transceiver chip to establish wireless data acquisition net of engineering geology exploration,and studied the wireless network synchronization protocol.This paper analyzed sources of the wireless time synchronization error,put forward the measures to improve time synchronization accuracy,and introduced the system hardware and software component and realized method in details.The paper inspected the system through engineering application of a geological survey project.Results show that the paper realizes close wireless data collection without error in 500m,time synchronization error controls in 2μs.The work efficiency is improved,and working time is shortened to 1/3 times than that of cable mode.

引文

[1]罗维炳.新一代无线局域网技术在地震数据采集系统中的应用[J].石油仪器,2004,18(1):9-12,15.LUO Wei-bing.Application of new generation wireless localarea network technology to the telemetry seismic dataacquisition system[J].Petroleum Instruments,2004,18(1):9-12,15.
    [2]王莹,张大波.嵌入式无线智能家庭网络的远程控制[J].微计算机信息,2008(23):48-50.WANG Ying,ZHANG Da-bo.Remote control of embeddedwireless smart home network[J].Microcomputer Information,2008(23):48-50.
    [3]王建国,吕艳宗,王树杰,等.高精度无线同步技术及其在石油勘探中的应用[J].传感器技术,2005,24(8):74-76.WANG Jian-guo,LV Yan-zong,WANG Shu-jie,et al.Precise synchronization in wireless communication and itsapplication in petroleum reconnaissance technology[J].Journal of Transducer Technology,2005,24(8):74-76.
    [4]重庆地质仪器厂.DZQ48/24/12A高分辨地震仪(浅震仪)[EB/OL].(2008).http://www.cgif.com.cn.
    [5]王洪辉,庹先国,穆克亮,等.基于FPGA+MCU的全数字式滑移脉冲信号发生器的研制[J].核技术,2007,30(10):868-871.WANG Hong-hui,TUO Xian-guo,MU Ke-liang,et al.Develop-ment of digital slip pulse generator based on FPGA&MCU[J].Nuclear Techniques,2007,30(10):868-871.
    [6]岳桂军,叶湘滨,虞武华.基于USB2.0的多功能测试系统设计[J].微计算机信息,2008,24(28):21-25.YUE Gui-jun,YE Xiang-bin,YU Wu-hua.Design ofmultifunctional testing system based on USB 2.0[J].Control&Automation,2008,24(28):21-25.
    [7]Nordic公司单片无线收发器nRF905用户数据手册[M].挪威:Nordic半导体公司,2004.