新型本安分布式矿井三分量地震仪的研制

Development of New Essential Safety Distributed Mine 3-component Seismograph

为适应矿井地震勘探的新技术的需要,研制一种新型本安分布式矿井三分量地震数据采集系统,该地震仪由便携式控制主机和多个数字三分量检波器构成,其中控制主机采用高性能32位嵌入式微处理器芯片PXA270,通过配套开发的软件,实现了对数字检波器的监控管理及一定的适时数据处理功能;数字检波器内部带有基于单片机的高性能地震数据采集电路,可实现三分量地震信号的数据采集和数字化输出。系统采用分布式控制方式,通过RS-485总线构成的网络进行信息传递,具有抗干扰性强、道组合方便灵活等特点,并具本质安全性,可以用于煤矿井下或其他爆炸性气体环境进行高精度三分量地震数据采集。

In order to meet with the needs of the new technology in seism exploration,a new essential safety distributed mine 3-component seismograph is designed .The seismograph is composed of a portable host computer and several digital 3-compoented geophones.The host computer is designed in high performance 32-bit embedded microprocessor PXA270,it has the ability to monitor and manage the digital geophones and has the ability of some timely data processing by the correspond software.The digital geophone is embedded in high performance seism data sampling circuit based on singlechip,it has the ability to sample data of the three-component seismic signal and transmit the data out.The system adapts the distributed control manner and the information is transmitted by network based on the RS-485 bus.The system has the strong ability of anti-interference and the geophones can be easily assembled or take down.Furthermore,the whole system is essential safety and it can be used in mine or other explosive atmosphere to sample high precision 3-componnents seismic data.