基于精密时钟同步技术的微震监测分站
Micro-seismic monitoring substation based on precision clock synchronization technology
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摘要: 研发了基于精密时钟(PTP)同步技术的KJ768-F微震监测分站。介绍了分站的软、硬件设计及精密时钟同步协议原理与实现;对分站的等效输入噪声及时间同步精度进行测试:结论表明分站的最大等效输入噪声为10.04 μV;分站与授时服务器的同步精度为320 ns;分站与分站间的同步精度为120 ns。基于该分站的KJ768微震监测系统井下定点爆破试验定位误差小于10 m,定位精度满足对冲击地压矿井监测的需要。Abstract: A micro-seismic monitoring substation based on precision clock (PTP) synchronization technology was developed. This article introduces the software and hardware design of substation and the principle and implementation of precision clock synchronization protocol. The equivalent input noise and time synchronization accuracy of the substation are tested. The conclusion shows that the maximum equivalent input noise of the substation is 10.04 μV; the synchronization accuracy of the substation and the time server is 320 ns; the synchronization between the substation and the substation is 120 ns. The positioning error of the underground fixed-point blasting test of the KJ768 micro-seismic monitoring system based on this substation is less than 10 m, which is convenient for on-site installation and meets the needs for monitoring of rock burst mines.
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