中南大学学报（自然科学版）2023，Vol.54Issue(11)：4403-4412,10.DOI:10.11817/j.issn.1672-7207.2023.11.018
井孔三分量时间域电磁探测自适应恒压钳位发射技术
Adaptive constant voltage clamping transmitting technology for borehole three-component time domain electromagnetic detection system
摘要
Abstract
In order to meet the needs of remote borehole detection,an adaptive constant voltage clamping transmitting technology was proposed for borehole three-component time domain electromagnetic detection system.The three-component dynamic launch coil was designed,which realized three-component electromagnetic launch through dynamic control of borehole full space exploration.The multi-dimensional three-dimensional space time domain electromagnetic remote detection in borehole space was realized through miniaturized high-power launch circuit,passive adaptive constant voltage clamping method,and three-component dynamic launch coil.The electromagnetic pulse transmitter and the three-component transmitting coil were developed,and the integration and testing of the borehole detection instrument were completed.The results show that under the condition of small space and limited power,this technology breaks through the limitation of the traditional clamping method which clamping voltage and turn-off time are nonadjustable.The adaptive clamping shaping function is realized through real-time acquisition feedback of emission parameters and corresponding control strategies,the process of emission current falling edge is automatically optimized and controlled,and the adaptive adjustment of the turn off rate is realized.The transmitting system can realize the stable and high-power transmission of three-component dynamic high-quality current pulses,and the current turn off rate can be adaptively controlled and adjusted.关键词
时间域电磁法/井孔电磁探测/无源自适应恒压钳位/三分量发射线圈Key words
time domain electromagnetic method/borehole electromagnetic detection/passive adaptive constant pressure clamping/three-component transmitting coil分类
天文与地球科学引用本文复制引用
赵子杨,刘丽华,柯振,晏使楚,刘小军,肖占山..井孔三分量时间域电磁探测自适应恒压钳位发射技术[J].中南大学学报（自然科学版）,2023,54(11):4403-4412,10.基金项目
国家自然科学基金资助项目(61827803)(Project(61827803)supported by the National Natural Science Foundation of China) （61827803）
