摘要
基于虚拟仪器的信号处理程序直观、易懂,有利于专业测试人员掌握,代表了未来仪器技术的发展方向。采用虚拟仪器硬件平台和LabVIEW软件开发平台,为小尺度沉积物声学测试系统的信号处理编写了开放的信号分析与数据处理软件。由虚拟仪器硬件平台采集卡完成超声信号的采集工作,编程读取信号初至,并设计和改进了判读方法,利用虚拟仪器LabVIEW编程实现原始信号滤波、相关分析、频谱分析等信号处理功能,使沉积物声学特性的测量和计算成为一体,提高了效率,使声信号信息的提取更为直观、准确。
The signal-processing program based on the virtual instrument is intuitive and lucid. It represents the direction of future virtual instrument development and is easy for professional testing person- nel to master. The virtual instrument hardware platform and LabVIEW software platform are used to pro- gram the signal processing and data handing for the small-scale sediment acoustic testing system. Ultra- sound signals are collected using the Data Acquisition Card, and then the initial value, design, and devel- opment of the method of reading are programmed. The original signal filter, correlation analysis, frequen- cy analysis, and so on, are completed, the sediments of sound velocity characteristics measuring and calcu- lating are integrated, and efficiency is raised.
出处
《浙江理工大学学报（自然科学版）》
2012年第6期827-832,共6页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
基金
国家海洋局第二海洋研究所基本科研业务费专项资助(JT0802)
海洋公益性行业科研专项经费项目(200805005)
浙江省自然科学基金项目(Y1080690)
关键词
沉积物超声检测
虚拟仪器
相关分析
频谱分析
sediment acoustic testing
virtual instrument
correlation analysis
frequency domain analysis
