高压水射流靶物探测的阵列改进和软件集成

发布时间：2018-01-13 20:06

本文关键词：高压水射流靶物探测的阵列改进和软件集成　出处：《安徽理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：目前高压水射流技术因其特有的优点已被广泛应用到各个领域,其主要的用途包括切割、清洗等工作。本课题组已对该新兴的技术进行了一定的研究,该研究内容主要是利用高压水射流技术与声音识别处理技术结合进行地雷等靶物的探测,创建了高压水射流靶物探测平台,利用高压水射流喷嘴和传声器分别组成相对应的直线型阵列,研究了高压水射流反射声信号处理的算法程序,编写了信号采集与处理的部分程序。但是,该项目的研究仍存在不足,直线型传声器阵列由于各个传声器接收信号的距离问题而使得接收信号失真严重,导致探测精度降低,同时系统各部分软件程序未能实现集成化。为了提高高压水射流靶物探测系统的探测精度,本文研究设计了圆弧型阵列结构,利用圆弧形阵列各个位置到达声源位置相同或相近的特点,解决了直线型传声器阵列探测精度不高的问题。搭建了直线型阵列结构与圆弧型阵列结构的探测精度对比仿真实验,设计了多组直线型和圆弧型结构参数进行实验。通过仿真实验结果可知,多组直线型阵列中探测误差最小达到88.89mm,而圆弧型阵列结构中,最优的结构探测误差为9.03mm。从而可知圆弧型阵列的探测精度高于直线型阵列,并对圆弧型阵列结构进行优化,确定最优的圆弧型阵列的结构参数是相邻传声器之间距离为200mm,圆周角为30°的结构。为了提高高压水射流靶物探测系统的探测效率,缩短信号处理的时间,达到实时观察探测结果的目的。本文利用LabVIEW作为高压水射流信号处理算法程序编写的软件平台,对各个信号处理算法子程序进行整合,解决了各个程序间不同数据类型之间的转换和不同表示法的数值类型之间的转换问题。本文通过对信号处理模块的程序进行集成,使得模块之间实现数据流通,达到探测处理一体化程序,实现了在探测过程中实时显示目标靶物相对位置的目的。本文主要解决了高压水射流靶物探测系统直线型传声器阵列结构探测精度低和系统程序未能集成化的问题,设计了圆弧型传声器阵列代替直线型传声器阵列,并对圆弧型阵列进行结构优化,使得靶物探测系统的精度得到很大的提高。通过对已有的软件程序进行改进实现软件程序集成化,达到实时监测探测结果的目的,极大地提高了探测系统的探测效率。
[Abstract]:At present, high pressure water jet technology has been widely used in various fields because of its unique advantages. Its main uses include cutting, cleaning and so on. The main content of this research is to use high pressure water jet technology and sound recognition technology to detect targets such as mines, and to create a high pressure water jet target detection platform. Using the corresponding linear array of high pressure water jet nozzles and microphones, the algorithm program of acoustic signal processing of high pressure water jet reflection is studied, and some programs of signal acquisition and processing are compiled. The research of this project is still insufficient. Because of the distance problem of the received signal of each microphone, the received signal distortion is serious and the detection accuracy is reduced. In order to improve the detection accuracy of the high pressure water jet target detection system, the circular arc array structure is studied and designed. The same or close position of the sound source is obtained by using the circular arc array. The problem of low detection accuracy of linear microphone array is solved. The simulation experiment of detection accuracy comparison between linear array structure and circular arc array structure is built. The experimental results show that the detection error is 88.89mm in the linear array and 88.89mm in the arc array. The optimal structure detection error is 9.03mm. thus, the detection accuracy of circular arc array is higher than that of linear array, and the structure of circular arc array is optimized. In order to improve the detection efficiency of high pressure water jet target detection system, the optimal structure parameters of circular arc array are determined to be 200 mm distance between adjacent microphones and 30 掳circumference angle in order to improve the detection efficiency of high pressure water jet target detection system. In order to shorten the time of signal processing and achieve the purpose of observing the detection results in real time, this paper uses LabVIEW as the software platform of the algorithm program of high pressure water jet signal processing. The subroutine of each signal processing algorithm is integrated. It solves the problem of conversion between different data types and numerical types of different representations. This paper integrates the program of signal processing module to realize the data circulation between modules. Integrated detection and processing procedures are achieved. The aim of displaying the relative position of the target in real time during the detection process is realized. This paper mainly solves the problem that the detection accuracy of the linear microphone array structure of the high pressure water jet target detection system is low and the system program is not integrated. Question. The arc microphone array is designed to replace the linear microphone array, and the structure of the circular arc microphone array is optimized. The precision of the target detection system is greatly improved. The software program integration is realized by improving the existing software program to achieve the purpose of real-time monitoring detection results. The detection efficiency of the detection system is greatly improved.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN641;TN912.3

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