摘要
浅层地震仪的关键技术在于如何解决信号测量的大动态范围问题,国内外解决这个问题的主流技术浮点放大技术和24位A/D采集技术都存在一定的缺陷。针对这些缺陷将虚拟仪器技术应用于地震仪,并尝试使用16位A/D和增益自动控制电路(AGC),成功设计了一种成本较低的而动态范围优于120dB且维修升级方便的地震仪。把地球物理学和虚拟仪器技术结合,开创了地学仪器研究开发的新思路、新方法。
The key technique of shallow seismograph lies in how to resolve the large dynamic scope of signal measurement. The domestic and international instrument company had two kinds of essential techniques to resolve this problem, one was the floatamplify electric circuit technique, another was 24 A/Ds of △-∑ technique, but both had some shortcomings. This design applied virtual instrument technique to solve these problems, and used 16 A/Ds technique and automatic gain control electric circuit （AGC） , succeeded in designing a kind of seismograph. It is cheaper and has large dynamic scope of signal measurement. This design combines the virtual instrument technique and geophysics technique, so founds a new way to design geosciences instrument.
出处
《仪表技术与传感器》
CSCD
北大核心
2008年第8期31-32,56,共3页
Instrument Technique and Sensor
基金
中国地质大学(武汉)优秀青年教师基金资助
关键词
浅层地震仪
虚拟仪器技术
增益自动控制电路
shallow seismograph
virtual instrument technique
automatic gain control electric circuit
