一种油管缺陷无损检测系统的实现

Implement of Non-destructive Testing System for Oil-well Tubing Defects

针对油管腐蚀、磨损穿孔、破裂甚至断裂等诸多问题,设计一个油管缺陷无损检测系统。利用一种新型的油管缺陷磁性检测传感器采集缺陷信号,信号经运算放大、A/D转换后上传至PC,使用C++Builder 6.0软件制作了一个上位机界面,可以实时显示油管的各种缺陷。整个系统分为三个部分,即信号采集、信号处理和实时显示,为了提高与PC的通讯速度以达到实时显示的精确性,利用USB接口芯片CH375将信号处理部分设计成一个USB设备,实现了与PC机的USB通讯。系统主控芯片采用增强型51单片机STC12C5404AD。经现场应用证明,采用该系统可以快速准确地检测出油管的各种缺陷,而且操作简单。

The non-destructive flaw detection system for oil well tubing is designed to solve a lot of problems in oil well tubing as corrosion, wear and tear perforation, rupture or even fracture, etc. And the new magnetic detector for inspection of defects in oil well tubing is used to acquire signals,and then the signals are magnified and transferred to PC after A/D conversion. Software C^＋＋ Builder6.0 is used to produce a host computer interface and a variety of oil well tubing defects can be displayed in real - time. The whole system is divided into three parts, namely, signal acquisition, signal processing and real - time display. In order to increase the speed of communication with the PC and to obtain accurate real - time display,a USB interface chip CH375 is used to make the signal processing part as a USB device,in this way communications with PC is built up through Universal Serial Bus. An enhanced 51 single- chip STC12C5404AD is used as a system microcontroller. Proved by the practical application on site,this system can detect various defects in the oil well tubing quickly and accurately,and it is easy to operate.