1、 摘 要 根据超声波脉冲反射来进行厚度测量的， 当探头发射的超声波脉冲通过被测 物体到达材料分界面时，脉冲被反射回探头，通过精确测量超声波在材料中传播 的时间来确定被测材料的厚度。 凡能使超声波以一恒定速度在其内部传播的各种 材料均可采用此测量。按此设计的可对各种板材和各种加工零件作精确测量，也 可以对生产设备中各种管道和压力容器进行监测， 监测它们在使用过程中受腐蚀 后的减薄程度。可广泛应用于石油、化工、冶金、造船、航空、航天等各个领域 仪器采用最新的高性能、低功耗微处理器技术，基于超声波测量原理，可以测量 金属及其它多种材料的厚度，并可以对材料的声速进行测量。本机利用单片机技 术应用液晶显
2、示测量厚度值,并同时显示声速,自动校准实现了已知声速测量厚 度及已知厚度测量声速两大功能.操作简单,稳定可靠,是无损检测工作者的理想 检测工具. 【关键词】超声波脉冲反射；电涡流传感器；数据采集系统；CCD输出信号。 Abstract Thickness measurement, according to the ultrasonic pulse reflection when the launch of the ultrasonic pulse probe through the material object to be tested interface, the pulse is ref
3、lected back to the probe, through the accurate measurement of ultrasonic wave propagation in the material time to determine the thickness of the material being tested. Those that make the ultrasonic wave at a constant speed in its internal communications can adopt the measure of various materials. A
4、ccording to this design can accurately measure about all kinds of plates and all kinds of machining parts, can be all kinds of pipeline and pressure vessel in the production equipment to monitor, monitor them in the process of using the degree of corrosion after thinning. Can be widely used in petro
5、leum, chemical industry, metallurgy, shipbuilding, aviation, aerospace and other fields， Equipment using the latest high performance and low power consumption microprocessor technology, based on ultrasonic measuring principle, can measure the thickness of the metal and other a variety of materials,
6、and can be conducted on the material of the sound velocity measurement. The machine using the single chip microcomputer technology application of measuring the thickness of the liquid crystal display (LCD) value, and at the same time shows that sound velocity, implements the automatic calibration known sound velocity measuring thickness and thickness measuring sound velocity known two big functions. The operation is simple, stable and reliable, and is an ideal testing too
