本文關(guān)鍵詞：高壓水射流靶物探測的陣列改進和軟件集成　出處：《安徽理工大學》2017年碩士論文　論文類型：學位論文

  更多相關(guān)文章： 高壓水射流 直線型陣列 圓弧型陣列 數(shù)據(jù)流通 集成化

【摘要】：目前高壓水射流技術(shù)因其特有的優(yōu)點已被廣泛應用到各個領(lǐng)域,其主要的用途包括切割、清洗等工作。本課題組已對該新興的技術(shù)進行了一定的研究,該研究內(nèi)容主要是利用高壓水射流技術(shù)與聲音識別處理技術(shù)結(jié)合進行地雷等靶物的探測,創(chuàng)建了高壓水射流靶物探測平臺,利用高壓水射流噴嘴和傳聲器分別組成相對應的直線型陣列,研究了高壓水射流反射聲信號處理的算法程序,編寫了信號采集與處理的部分程序。但是,該項目的研究仍存在不足,直線型傳聲器陣列由于各個傳聲器接收信號的距離問題而使得接收信號失真嚴重,導致探測精度降低,同時系統(tǒng)各部分軟件程序未能實現(xiàn)集成化。為了提高高壓水射流靶物探測系統(tǒng)的探測精度,本文研究設(shè)計了圓弧型陣列結(jié)構(gòu),利用圓弧形陣列各個位置到達聲源位置相同或相近的特點,解決了直線型傳聲器陣列探測精度不高的問題。搭建了直線型陣列結(jié)構(gòu)與圓弧型陣列結(jié)構(gòu)的探測精度對比仿真實驗,設(shè)計了多組直線型和圓弧型結(jié)構(gòu)參數(shù)進行實驗。通過仿真實驗結(jié)果可知,多組直線型陣列中探測誤差最小達到88.89mm,而圓弧型陣列結(jié)構(gòu)中,最優(yōu)的結(jié)構(gòu)探測誤差為9.03mm。從而可知圓弧型陣列的探測精度高于直線型陣列,并對圓弧型陣列結(jié)構(gòu)進行優(yōu)化,確定最優(yōu)的圓弧型陣列的結(jié)構(gòu)參數(shù)是相鄰傳聲器之間距離為200mm,圓周角為30°的結(jié)構(gòu)。為了提高高壓水射流靶物探測系統(tǒng)的探測效率,縮短信號處理的時間,達到實時觀察探測結(jié)果的目的。本文利用LabVIEW作為高壓水射流信號處理算法程序編寫的軟件平臺,對各個信號處理算法子程序進行整合,解決了各個程序間不同數(shù)據(jù)類型之間的轉(zhuǎn)換和不同表示法的數(shù)值類型之間的轉(zhuǎn)換問題。本文通過對信號處理模塊的程序進行集成,使得模塊之間實現(xiàn)數(shù)據(jù)流通,達到探測處理一體化程序,實現(xiàn)了在探測過程中實時顯示目標靶物相對位置的目的。本文主要解決了高壓水射流靶物探測系統(tǒng)直線型傳聲器陣列結(jié)構(gòu)探測精度低和系統(tǒng)程序未能集成化的問題,設(shè)計了圓弧型傳聲器陣列代替直線型傳聲器陣列,并對圓弧型陣列進行結(jié)構(gòu)優(yōu)化,使得靶物探測系統(tǒng)的精度得到很大的提高。通過對已有的軟件程序進行改進實現(xiàn)軟件程序集成化,達到實時監(jiān)測探測結(jié)果的目的,極大地提高了探測系統(tǒng)的探測效率。
[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 擄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.
【學位授予單位】：安徽理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN641;TN912.3

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本文編號：1420329