發(fā)布時間：2018-08-26 14:36

【摘要】：隨著社會經(jīng)濟(jì)的發(fā)展,人們在生產(chǎn)、生活和工作中對各方面的要求不斷提高,有許許多多的問題亟待解決,其中距離測量技術(shù)的重要性日益被人們重視。70年代在美國的貝爾實驗室線陣CCD(Charge Coupled Device)光電測量儀的出現(xiàn),使測量技術(shù)有了很大的提高。相比于其他的測距儀,線陣CCD構(gòu)成的傳感測距系統(tǒng)不僅能實現(xiàn)非接觸測量,而且在測量的速度、準(zhǔn)確度、重復(fù)性等方面具有優(yōu)勢,安裝調(diào)節(jié)也很便捷。本論文廣泛調(diào)研了國內(nèi)外測距技術(shù)的現(xiàn)狀,分析了激光三角測距的原理和線陣CCD的基本原理。以激光三角法為前端,以線陣CCD為核心光電轉(zhuǎn)換器件,設(shè)計了性能先進(jìn)的一款激光三角測距系統(tǒng)。包含前端設(shè)置模塊、CCD光電轉(zhuǎn)化模塊、CCD驅(qū)動模塊、信號二值化模塊、單片機(jī)信號識別處理模塊以及最終的數(shù)碼管顯示模塊。本系統(tǒng)的激光筆固定在游標(biāo)卡尺上,激光筆發(fā)射出的激光照射在CCD表面的一層遮光布上,經(jīng)過光積分和光生電荷轉(zhuǎn)移階段后,將光信號轉(zhuǎn)化為電信號輸出,對輸出電信號進(jìn)行預(yù)處理、二值化處理后,單片機(jī)識別激光照射位置的信息量,最終由數(shù)碼管顯示出激光筆在游標(biāo)卡尺上移動的距離。設(shè)計的硬件電路主要有CCD驅(qū)動電路、信號處理電路、LED顯示電路、中央處理電路,編寫了相應(yīng)軟件程序,經(jīng)過一系列的軟硬件調(diào)試過程和實驗過程,系統(tǒng)能實時的顯示激光位置的信息量,實現(xiàn)對距離的測量。激光三角測距系統(tǒng),相對與傳統(tǒng)方式有了很大的突破,其特點主要表現(xiàn)在測量準(zhǔn)確度高,系統(tǒng)結(jié)構(gòu)簡單,性能穩(wěn)定,有利于廣泛推廣使用。
[Abstract]:With the development of social economy, people's demands on all aspects of production, life and work have been raised constantly, and there are many problems to be solved. Among them, the importance of distance measurement technology has been paid more and more attention to. The appearance of Bell Labs linear array CCD (Charge Coupled Device) photoelectric measuring instrument in America in the 1970s has greatly improved the measurement technology. Compared with other rangefinders, linear CCD sensor ranging system not only can realize non-contact measurement, but also has advantages in measuring speed, accuracy, repeatability and so on, and it is also convenient to install and adjust. In this paper, the current situation of ranging technology at home and abroad is investigated, and the principle of laser triangulation ranging and the basic principle of linear CCD are analyzed. A laser triangulation ranging system with advanced performance is designed with laser triangulation as the front end and linear CCD as the core photoelectric conversion device. It includes a front-end setting module, a CCD photoelectric conversion module, a CCD driving module, a signal binarization module, a single-chip microcomputer signal recognition and processing module and a final digital tube display module. The laser pen of the system is fixed on the Vernier caliper. The laser emitted by the laser pen is illuminated on a layer of shading cloth on the surface of the CCD. After the stage of optical integration and photogenerated charge transfer, the light signal is converted into the output of electrical signal. After preprocessing the output electric signal, the single-chip computer can recognize the information of the laser irradiation position, and finally display the distance of the laser pen moving on the Vernier caliper by the digital tube. The hardware circuit is mainly composed of CCD drive circuit, signal processing circuit, CCD display circuit, central processing circuit, the corresponding software program is written, after a series of software and hardware debugging process and experimental process, The system can display the information of laser position in real time and measure the distance. The laser triangulation ranging system has made a great breakthrough in comparison with the traditional method. Its characteristics are high measurement accuracy, simple system structure and stable performance, which is conducive to wide application.
【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN249

【共引文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 鄒澤華;基于光子晶體濾波和量子點光譜轉(zhuǎn)換的日盲紫外成像裝置研究[D];太原理工大學(xué);2015年

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本文編號：2205175