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基于LabVIEW软件平台开发了便携式锚杆长度检测系统。该系统包括一个带有信号激励接收功能的便携式工控机、探头和上层控制软件。首先通过软件设置硬件参数,TB-1000信号激励接收卡在探头上激励出超声导波信号并采集反射回波,经模拟滤波器处理后进入NIPCI-5102数据采集卡,将模拟信号转换为数字信号输入PC计算机。本系统软件可对激励接收卡设置激励信号参数,并具有对采集到的信号进行频域变换、希尔伯特变换、小波降噪、快速傅利叶变换(STFT)、扫频成像等处理功能。通过实验,证明了该软件系统具有较高的实时性和可操作性,较好地实现了锚杆长度的快速检测,扩大了超声导波在此领域的应用。
Based on LabVIEW software platform, a portable bolt length detection system was developed. The system includes a portable IPC with signal excitation reception, probe and upper control software. First set the hardware parameters through software, TB-1000 signal excitation receiver card in the probe excitation of the ultrasonic guided wave signal and the acquisition of reflected echoes, the analog filter processing into the NIPCI-5102 data acquisition card, the analog signal is converted to digital signals Enter the PC computer. The system software can set excitation signal parameters for the excitation receiving card, and has processing functions such as frequency domain transform, Hilbert transform, wavelet denoising, fast Fourier transform (STFT) and sweep imaging on the collected signals. Through experiments, it is proved that the software system has high real-time and operability, and the rapid detection of the length of the anchor rod is realized well. The application of the ultrasonic guided wave in this field is expanded.