GEF-Ⅱ地电场仪的研制及应用  

Development and Application of GEF-ⅡGeoelectric Field Instrument

作　　者：张兴国 王兰炜 张宇 胡哲 张世中 Zhang Xingguo;Wang Lanwei;Zhang Yu;Hu Zhe;Zhang Shizhong(Institute of Earthquake Forecasting,CEA,Beijing 100036,China)

机构地区：[1]中国地震局地震预测研究所,北京100036

出　　处：《中国地震》2024年第2期470-483,共14页Earthquake Research in China

基　　金：中国地震局地震预测研究所地震业务科技支撑项目(CEAIEF20220503)资助。

摘　　要：地电场观测是地球物理场观测的一种重要手段。利用ARM与FPGA技术研制了新型GEF-Ⅱ地电场观测仪,该仪器包括多通道数据采集、数字信号处理、控制与服务等几部分,具有输入阻抗大、测量精度高、短路噪声小的特点,实现了地电场的连续、自动测量,满足地震监测预测研究的需求。自2017年以来,该系统已广泛应用于我国地震监测台网中,为地震监测预测和科学研究提供了可靠的观测数据。Geoelectric field observation serves as a crucial method in geophysical field observation. Utilizing ARM and FPGA technology, a novel geoelectric field observation instrument has been developed. This instrument incorporates multi-channel data acquisition, digital signal processing, control, and service functionalities, boasting features such as large input impedance, high measurement accuracy, and low short-circuit noise. It enables continuous and automated measurement of geoelectric field signals,catering to the requirements of earthquake monitoring and prediction research. Since 2017, the system has been extensively utilized within earthquake monitoring network of China, providing dependable observation data for earthquake prediction and scientific research.

关 键 词：地电场 数字滤波 现场可编程 

分 类 号：P315[天文地球—地震学]