摘要
为了消除地电测量中的感应耦合干扰,并显著减少有效信息的损伤,设计一种以STM32为控制核心的基于cole-cole模型数值拟合的抗耦系统.通过对电源电路、阻抗匹配、双T滤波、单端输入转差分输出等模块电路进行详细的理论分析与具体设计实现信号采集与调理;通过抗耦时间点定位、cole-cole模型数值拟合等算法实现抗耦处理;通过在RLC电路模型和水槽模型上进行某斩波去耦系统和抗耦系统的对比测试验证系统有效性.结果表明:同等条件下,相较于某斩波系统,该抗耦系统在消除感应耦合的同时将有效信息损伤降低了10%以上.系统具有实用价值.
In order to eliminate the electromagnetic induction coupling interference in geoelectric detection and significantly reduce the damage to effective information,a numerical fitting anti-coupling system based on cole-cole model with STM32 as the control core is designed.Signal acquisition and conditioning was investigated through the detailed theoretical analysis and specific design of power circuit,impedance matching,double-T filter and single input to differential output module circuit.Based on the algorithm of determination of anti-coupling time point and cole-cole model numerical fitting,anti-coupling processing is realized.To verify the effectiveness of the system,a comparison test on RLC circuit model and water tank model was conducted beteween a chopping-wave decoupling system and this system.The results show this system can eliminate the inductive coupling and reduce the effective information damage by more than 10% compared with a chopping-wave decoupling system under the same conditions.It is concluded that system has practical value.
作者
唐冬梅
杨振
魏丽君
TANG Dong-mei;YANG Zhen;WEI Li-jun(Department of Elec trical Engineering,Hunan Electromechanical Vocational and Technical College,Changsha 410151,China;Hunan Zhongda Testing Technology Group Limited Company,Changsha 410006,China;Hunan Railway Professional Technology College,Zhuzhou 412001,China)
出处
《数学的实践与认识》
2022年第3期121-131,共11页
Mathematics in Practice and Theory
基金
国家自然科学基金(41804073)
湖南省教育厅科学研究项目(18C1379)。
