水下金属管线探测仪电磁信号发送机设计  

Design of signal transmitter for underwater metal pipe detector

作　　者：付国红[1] 李广[1] 黄良沛[2] 程辉[1,3] 杨天春[1] 

机构地区：[1]湖南科技大学先进矿山装备教育部工程研究中心,湘潭411201 [2]湖南科技大学机械设备健康维护湖南省重点实验室,湘潭411201 [3]中国科学院地质与地球物理研究所,北京100029

出　　处：《电子测量与仪器学报》2015年第4期584-590,共7页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(41274126;41164004);湖南省自然科学基金湘潭市联合基金(12JJ9008);湖南省自然科学基金(13JJ3088;12JJ6035);湖南省高校科技创新团队支持计划资助项目

摘　　要：针对江河水下金属管线埋深大、距离长等特点,专门设计了一种基于STM32和CPLD的电磁信号发送机,为电磁法探测水下金属管线提供人工场源。介绍了水下金属管线探测仪电磁信号发送机的设计方法,根据实际探测情况建立了发送机信号输出回路的物理模型,推导了输出回路的数学表达式并进行了仿真,描述了发送机电路结构与输出电流的测量方法,仿真和样机实验结果表明,发送机设计方法可行,输出信号频率稳定,最大输出功率可达1 000 W,电流测量相对误差约2%,可为水下金属管线的电磁测深提供能量充足且稳定的电磁信号。Aiming at the features of great buried depth and long distance, a more powerful electromagnetic signal transmitter was designed based on STM32 and CPLD, the transmitter was used for the detection of metal pipeline which was buried under rivers.This paper introduced the design method of the transmitter in detail.According to the actual situation, a physical model and the calculated mathematical expression of electromagnetic signal transmitting loop were established.A series of measurement experiment was carried out using the prototype transmitter.The simu-lation and experimental results show that the transmitter is reliable in work .The maximum output power can reach 1 000 watts and the relative error of current measurement is about 2%, it can provides powerful and stable electromag-netic signal for depth detecting of underwater metal pipe .

关 键 词：电磁法 管线探测 发送机 电流测量 

分 类 号：TH763[机械工程—仪器科学与技术] TN06[机械工程—精密仪器及机械]