浅海底瞬变电磁探测发射系统研究  

Study of Transmitting System in Transient Electromagnetic Exploration on Shallow Seafloor

作　　者：周国华[1] 林君[1] 周逢道[1] 王艳[1] 

机构地区：[1]吉林大学,吉林长春130061

出　　处：《电力电子技术》2006年第5期58-61,共4页Power Electronics

基　　金：国家高新技术发展计划(2002AA615030)~~

摘　　要：研究了瞬变电磁探测发射系统中的几项关键技术,包括发射桥路的对比和选择,发射驱动电路的设计、缓冲吸收电路的设计以及过流保护电路的设计等。针对浅海底探测这一应用环境的特殊性,设计了一套浅海底拖曳式瞬变电磁探测的发射系统,给出仪器系统总体框图。系统实现了小型化、无人操作、大电流、短关断时间及小过冲电流的发射。给出了发射波形的实测结果。This paper analyzes and researches several key techniques in the transmitter,including the comparison and choice of transmitting bridge,the designs of driving circuit,snubber circuit,and over-cuIrent protection circuit.A suit of transmitter met to shallow seafloor TEM（Transient Electromagnetic Method） exploration is designed successfully according to the particular requests and considering the actual application environment.The collective sketch is given.This system achieves miniaturization,large transmitting cuirent,short ramp time, small transitor cuirent and telecontrol.The measure result is also given.

关 键 词：驱动电路/浅海底 瞬变电磁法 发射桥路 

分 类 号：P742[天文地球—海洋科学]