【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。更多还原

【Abstract】 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-current protection circuit.A suit of transmitter met to shallow seafloor TEM(Transient Electromagnetic Method) exploration is designed successfully accord-ing to the particular requests and considering the actual application environment.The collective sketch is given.This system achieves miniaturization,large transmitting current,short ramp time,small transitor current and telecontrol.The measure result is also given.更多还原