摘要
新型强震仪采用高速信号处理器为控制核心,24位Σ-ΔA/D转换器与数字滤波器构成的3通道信号采集系统。仪器采用大容量CF卡记录采集数据,具有TCP/IP协议的网络通信接口,内置GSM通信模块,内置嵌入式网页服务器,可以通过浏览器与发送中文短信的方式对仪器进行监控。详细分析了仪器所采用的烈度算法与触发滤波器的特性和设计方法。通过性能测试,结果表明仪器具有高精度与低功耗的特性,完全满足强震观测的要求。
New type seismograph is developed on the basis of TMS3202812 DSP controller,24-bit Σ-ΔA/D converter and digital filter,which is a data acquiring system with three channels.This instrument uses large capacity CF card as data logger,net chip AX88796B with TCP/IP prototype as network communication interface,and build-in GSM module to send and receive short message command.With the embedded web-server,this instrument can be remote-controlled through web browser.Instrument intensity algorithm and trigger filter are designed and analyzed in detail.Results of the testing show that the instrument has the characteristic of high precision and low power consumption.
出处
《地震工程与工程振动》
CSCD
北大核心
2011年第6期153-158,共6页
Earthquake Engineering and Engineering Dynamics
基金
中国地震局工程力学研究所基本科研业务费专项项目(2008B009)
