基于VC++的超声探伤仪发射端信号测量与处理系统  

Ultrasonic Flaw Detector Transmitter Output Signal Measurement and Processing System Based on VC++

作　　者：肖定国[1,2] 徐春广[1,2] 王敬瑞[3] 廉小亲[3] 张晓力[3] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]北京理工大学先进加工技术国防重点学科实验室,北京100081 [3]北京工商大学计算机与信息工程学院,北京100048

出　　处：《仪表技术与传感器》2013年第4期13-15,共3页Instrument Technique and Sensor

基　　金：北京市教委科技创新平台项目(201151)

摘　　要：为提高超声波探伤仪在使用中的可靠性和准确性,设计了探伤仪发射端性能参数测量系统,实现探伤仪发射端输出特性各项参数的测量和校准。系统以工控机(IPC)为核心,采用PCI-5124采集卡进行探伤仪发射端输出信号的采集。基于VC++平台,设计了测量系统人机交互界面,实现了数据采集控制及各项测量参数的信号处理算法。测试结果表明:系统可对超声探伤仪发射端输出的脉冲峰峰值、脉冲上升时间与持续时间、脉冲重复频率、中心频率、带宽以及发射端等效输出阻抗等特性参数进行测量与校准。In order to improve the reliability and accuracy in using ultrasonic flaw detector,a measurement system for characterizing the performance of ultrasonic flaw detector＇s transmitter was designed,it achieved the testing and calibration of parameters for detector output characteristics of the transmitter.The core of the system was the IPC,it used acquisition card PCI-5124 to collect the transmitter output signal.The interactive interface of measurement system was designed based on VC＋ ＋,to achieve the control of data acquisition and signal processing algorithms for the measurement parameters.Through measurement and signal processing the system can provide such parameters as pulse peak,pulse rise time,pulse duration,pulse repetition frequency,center frequency,bandwidth,and output impedance to characterize the transmitter performance.

关 键 词：超声探伤仪 测量 输出特性 信号处理 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]