光栅谐振子检测地震波的理论和方法研究  

Study on the Method and Theory of Seismic Survey with Grating Vibrator

作　　者：李淑清[1] 南忠良[1] 门长峰[2] 李建良[1] 付连昆[1] 陶知非[3] 

机构地区：[1]天津科技大学自动化系,天津300222 [2]天津职业技术师范学院,天津300222 [3]石油地球物理勘探局装备事业部,涿洲072751

出　　处：《仪器仪表学报》2004年第3期399-401,共3页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金 ( 4 0 1740 3 1)资助项目

摘　　要：提出了一种新的检波理论和方法 ,它是一种实现检测地震波信号的地震勘探技术。采用光栅谐振子为敏感元件 ,将大地震动的机械信号转换成光调制信号—莫尔条纹 ,再用光电接收器件将其转换成数字化电信号输出。光栅谐振子检测地震波的装置能够直接将大地震动的机械信号转化为脉冲数字信号输出 ;并以记数的形式采样 ,避免了器件的精度不同对传感器输出的数据质量的影响 ,从而简化了组装工艺。文中阐述了该方法的工作原理、参数计算。A new method and theory about seismic survey is presented . It is a new seismic exploration technology to detect seismic waves. As a sensory unit, grating vibrator translates mechanical vibration of seism into photo-modulating signal, called Moiré fringe, which is converted into digital electronic signal by photoelectric parts after them. Due to the direct digital output of geophone by the pulse style and sampling by pulse counting, the impact area to deferent data, coming from the different accuracy of devices, is turned away. And so the packaging technology is simplified. The working principle, parameter arithmetic, tested measurement, experimental result are given.

关 键 词：地震勘探 莫尔条纹 光栅谐振子 敏感元件 油气勘探 

分 类 号：TE122[石油与天然气工程—油气勘探] P631.4[天文地球—地质矿产勘探]