基于LabVIEW的激光超声测量虚拟仪器研究  

Study on Virtual Instrument for Laser Ultrasound Measurement Based on LabVIEW

作　　者：刘霞[1] 王三民[1] 李素灵[2] 单宁[3] 

机构地区：[1]西北工业大学机电学院,陕西西安710072 [2]五洲工程设计研究院,北京100053 [3]武警工程学院,陕西西安710086

出　　处：《压电与声光》2010年第1期67-69,共3页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(50275125);航空科学基金资助项目(2006ZB53016)

摘　　要：给出了一种确定超声信号直达声时的方法,建立激光超声测量实验装置,研制了基于LabVIEW测量系统可视化虚拟仪器,用于材料物理参数的测量。实验结果表明,该系统操作简单,易实现,软件界面友好,可扩展性强;具有较高测量精度,测量材料厚度时,相对误差为2.51%,测量材料声速时,相对误差为2.57%。A method, which is used to confirm the direct sonic-time of ultrasound, is given. The experimental setup for detecting laser ultrasound is established. The visualization virtual instrument of measurement system is developed based on LabVIEW software. It is used to measure the physical parameters of materials. The experimental results show the system is characterized by simple operation, easy realization. The software has a friendly interface and good expansibility. This system has higher measurement precision. Relative error is 2.51% for measuring material thickness. Relative error is 2.57% for measuring sound material velocity.

关 键 词：超声学 激光超声 测量 虚拟仪器 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]