地电观测专用高精度数据采集器研制  

The develop of specific high precision data acquisition system used on geoelectric observation

作　　者：张宇[1] 王兰炜[1] 朱旭[1] 张兴国[1] 张世中[1] 胡哲[1] 

机构地区：[1]中国地震局地壳应力研究所,中国北京100085

出　　处：《地震地磁观测与研究》2014年第5期258-265,共8页Seismological and Geomagnetic Observation and Research

基　　金：中国地震局地壳应力研究所基本科研业务专项(编号:ZDJ2012-04);国家自然科学基金资助项目地电阻率观测干扰及干扰抑制方法研究(41374127)联合资助

摘　　要：针对地震地电前兆观测,研制基于ARM9平台和32位模数转换器ADS1281的地电观测高精度数据采集系统,实现了高精度和低噪声采样。本文给出地电观测高精度数据采集系统的硬件设计、软件实现和系统指标测试结果。该系统采样率可设置为1次/s至100次/s,1至6通道任意配置,通信协议符合中国地震局地震前兆台网专用设备网络通信规程,可以满足地震地电传感器信号采集和网络接入需求。To fulfill the requirements of earthquake precursor geoelectric observation, a high preci- sion data acquisition system based on ARM9 platform and 32 bit A/D converter ADS1281 is developed. This system realizes high precision and low noise. In this paper, the details on hardware design, the software implementation and test results are presented. The sampling rate from 1 times a second to 100 times a second can be set and 1 to 6 channels can be con- figured. Communication protocol conforms to the stipulation on net communication for de- vices used for earthquake precursor observatory network in China.

关 键 词：地震前兆 数据采集器 ARM ADS1281 高精度 

分 类 号：P315.722[天文地球—地震学] P319.3[天文地球—固体地球物理学]