基于STM32的电磁探伤仪便携式地面控制系统  

Portable Ground Control System of Electromagnetic Detector Tool based on STM32

作　　者：张雄 杨玲 张生林 许林康 党博[1] Zhang Xiong;Yang Ling;Zhang Shenglin;Xu Linkang;Dang Bo(Xi’an Shiyou University,Key Laboratory of Education Ministry for Photoelectric Logging and Detecting of Oil and Gas,Xi’an Shaanxi,710065)

机构地区：[1]西安石油大学光电油气测井与检测教育部重点实验室,陕西西安710065

出　　处：《电子测试》2018年第3期99-100,93,共3页Electronic Test

基　　金：国家自然科学基金"瞬变电磁法三分量过套管储层探测方法研究"(51504194)资助

摘　　要：针对电磁探伤地面系统结构复杂、误码率高等问题,设计了基于STM32的电磁探伤仪便携式地面控制系统。首先,采用STM32F103的定时器正交编码模块实现测井绞车马丁代克系统深度计量,然后通过并行I/O端口传输至STM32F407。在此基础上,采用STM32F407内部高速A/D对井下遥传信号进行实时采集,提出了高精度数字曼彻斯特码解调算法。最后,将汇总后的数据通过高速串口发送至上位机。实验结果表明,相对于传统硬件曼彻斯特解码电路,该系统可有效降低传输误差,并具有结构简单、体积小等优点。Aiming at the complicated structure and serious bit error rate of electromagnetic flaw detection ground system,a portable ground control system of electromagnetic flaw detector based on STM32 is designed.Firstly,the depth measurement of the logging winch Martin Decker system is implemented using the timer orthogonal coding module of the STM32F103.Then,the depth information is sent to the STM32F407 via the parallel I/O port.On this basis,downhole power line communication data are acquired with internal high-speed A/D of STM32F407,where a high-precision digital Manchester code demodulation algorithm is also presented.Finally,all data are sent through the high-speed serial port to the host computer for further processing.The experimental results show that the system can effectively reduce the transmission error with simple structure and small size.

关 键 词：电磁探伤 STM32 正交编码 曼彻斯特 

分 类 号：TE937[石油与天然气工程—石油机械设备]