作　　者： ; ; ; ;

机构地区： 电子科技大学自动化工程学院

出　　处： 《测控技术》 2008年第10期29-32,共4页

摘　　要： 针对阵列声波测井中声波全波列信号的特点,设计了一种满足实际生产作业要求的井下信号采集与处理系统。该系统以80C186为控制核心,主要实现与地面系统的通信和整个井下系统的控制;采用多片TMS320VC5416构成多通道实时信号处理电路,用于实现数字滤波、波形叠加、首波到时提取等处理。同时,阐述了基于短窗-长窗能量比算法的首波提取技术及其实现。 Based on the characteristic of the array acoustic full waveform signal, a system of signal acquisition and processing, fitting for practical project, has been designed. In this system, 80C186 is at heart of the central control unit, mainly to communicate with o- ver-ground system and make whole system work successfully; data acquisition and processing can be accomplished by TMS320VC5416, with the functions of digital filtering, splicing of multiple waves, and calculating the arriving time of the head wave. Besides, a method of detecting head wave of acoustic array as the arithmetic of energy ratio of short-window and long-window, and its realization are also introduced.

关 键 词： 阵列声波 信号采集 首波

领　　域： [自动化与计算机技术] [自动化与计算机技术]