数据采集系统中子样脉冲顶部斜率变化预测技术
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
该技术应用在石油地震勘探仪器的瞬时浮点放大器(以下简称主放大器)中,瞬时浮点放大器对采集到的每个子样脉冲都能选择一个最佳增益值,从而把幅度相差悬殊的地震信号放大至最佳值(2~8V),由于过零点子样脉冲采自信号幅度为零附近,因此子样顶部有较大的斜率,当主放大器最终选定增益值时,子样幅度却在不断增加,如何预测子样幅度的变化趋势,使主放大器准确选择放大倍数,是要讨论的问题。
The technology is applied in the 7-bands instantaneous floating point amplifier in the oil exploration equipment,which selects a extensive gain value from the sampling pulse,then magnifies the quake signal broadly to the extensive value.Because the sampling pulse of the across zero comes from the zero magnitude nearby,the frequency of the top pulse is big.When the main amplifier confirms the gain,the magnitude of the pulse is increasing.How to forecast the changing tendency of the pulse magnitude and to select exactly the magnifying times is discussed in this paper.
引文
[1]谢红,等.模拟电子技术基础[M].哈尔滨:哈尔滨工业大学出版社,2001.
    [2]傅丰林,等.电子线路基础[M].西安:西安电子科技大学出版社,2001.
    [3]数字地震仪编写组.数字地震仪[M].北京:石油工业出版社,1979.
    [4]尤桃如.SN338数字地震仪的操作、调试与维修[M].北京:地址出版社,1986.
    [5]SN-38HR PORTABLE DIGITAL SEISMIC DATA ACQUISITIONSYSTEM[M].OPERATION AND MAINTENANCE MANUAL.
    [6]李清泉,黄昌宁.集成运算放大器原理与应用[M].北京:科学出版社,1980.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心