基于PTP和RTC的煤矿微震监测系统及应用  

Coal mine microseismic monitoring system based on PTP and RTC and its application

作　　者：张辉[1,2,3] 

机构地区：[1]煤炭科学技术研究院有限公司安全分院,北京100013 [2]煤炭资源高效开采与洁净利用国家重点实验室(煤炭科学研究总院),北京100013 [3]顶板与冲击地压灾害防治工程研究中心,北京100013

出　　处：《煤炭工程》2016年第1期107-109,113,共4页Coal Engineering

基　　金：国家自然科学基金项目(51174112);国家科技重大专项(2011ZX05040-002-004);国家国际科技合作专项(2011DFA61790)

摘　　要：为提高煤矿微震监测系统的震源定位精度,结合煤矿实际情况,研制一套具有自主知识产权的高精度煤矿微震监测系统。该系统井下布置多台分站,通过分站采集拾震传感器信号,然后分站通过以太环网将数据上传到地面主机。系统采用PTP(Precision Time Protocol)网络精密时钟同步协议给分站授时作为时间基准,同时采用RTC(Real Time Clock)作为PTP时钟的补充时钟,主机通过对拾取震动波的阈值、时窗和相关有效触发道数判断,对微震事件进行自动识别。系统运行情况表明,监测结果与实际现场情况较吻合,定位结果具有小于10m的精度。To improve the source location precision of mine microseismic monitoring system, a high precision mieroseismic monitoring system in coal mine is developed, considering the actual situation of the mine. Substations of the system are laid in the mining area floor to collect vibration wave signal, and transmit microseismic data through ethernet ring network to the center. To guarantee the time synchronization of the substations, PTP precision clock synchronization protocol is applied, to improve the reliability and stability of the system clock, and RTC （ Real Time Clock） is used as a complement to the PTP clock. Based on the characteristics analysis of the vibration wave threshold value, the window of time and triggering number, microseismic wave is identified automatically. The center measuring and controlling computer manages every substation by remote control, monitoring working condition of every substation. The operation of this system shows that the monitoring results are fully identical with the actual situation; and positioning results have a high accuracy （within10m）.

关 键 词：PTP RTC 时间同步 微震监测系统 

分 类 号：TD744[矿业工程—矿井通风与安全]