提升小波包变换技术在工程爆破远程测振系统中的应用研究

Research on Application of Lifting Wavelet Packet Transformation in Remote Measurement System for Blasting Engineering

为适应工程爆破精细化、数字化要求,建立了具有完善信号采集功能的工程爆破远程测振系统。为提升该系统对爆破振动实测数据的信号分析能力引入了提升小波包变换技术。在算法基本原理的基础上,通过算法复杂度分析表明其相对传统小波算法运算速度提高约100%,运算速度快。通过提升小波包算法在爆破振动实测信号能量、时频特征提取中的应用研究表明,基于插值细分的提升小波SGW(6,6)占用资源少、分析精度高,能够满足数字爆破测振及高精度信号分析的需求。

To meet the refinement and digital requirements of engineering blasting, the remote measuring system for blasting engineering was built with perfect signal acquisition function. In order to improve signal analysis ability of the system for measured blasting vibration signal, the lifting wavelet packet transform technique was introduced. On the basis of basic principle of lifting wavelet packet transform, complexity of the algorithm was compared with the tra- ditional wavelet algorithm, the operation speed was improved about 100%. The blasting vibration signal energy and time-frequency feature were worked out. Results show that, based on interpolation subdivision, the SGW （6,6） showed advantages such as less resource analysis and high precision, which met the requirements of blasting vibration signal analysis and digital high precision.