本文選題：折光儀　切入點：全反射　出處：《上海工程技術大學》2015年碩士論文

【摘要】：折射率是透明、半透明材料的一個重要特性參數,折射率測量被廣泛應用于食品、制糖、石油、化工、環(huán)保等領域,以及眼鏡、珠寶鑒定行業(yè)。傳統(tǒng)阿貝折射儀由于其純光學機械結構的原因,無法滿足當前工業(yè)技術對精度和效率的要求。市場上引進的數字式折射率測量產品,大多光學結構設計復雜,價格昂貴,最大的缺陷是不能兼測固、液體材料的折射率,不能滿足市場的廣大需求。本文以工業(yè)自動化生產為應用背景,以高精度、自動快速測量為目的,研發(fā)一種基于線陣CCD圖像傳感器,能兼測固、液體材料折射率的智能數顯折光儀。按照光的全反射原理,以等腰梯形折射棱鏡為棱鏡主體,采用線陣CCD圖像傳感器取代目視觀察,根據量程和分辨率,分析、設計了儀器的光學系統(tǒng)。采用單色光源以避免被測材料色散的影響。采用線陣CCD圖像傳感器檢測明暗分界線的位置,提高了儀器的測量精度和自動化程度。以高性能微處理器C8051F060為核心,設計了整機的硬件電路,對所用各相關器件進行了選型,采用Altium Designer完成了硬件電路原理圖的繪制與PCB板的布局。采用C語言編程,設計了儀器的軟件系統(tǒng),包括控制軟件和圖像處理軟件。進行整機軟硬件調試,可完成預定的各項功能。對儀器原理樣機進行測試實驗。實驗結果表明光學系統(tǒng)設計總體合理,硬件電路符合要求,人機界面使用方便,可對透明及半透明固體材料和液體材料進行折射率測量,有著良好開發(fā)和應用前景。
[Abstract]:Refractive index is an important characteristic parameter of transparent and translucent materials. Refractive index measurement is widely used in food, sugar, petroleum, chemical, environmental protection and other fields, as well as glasses, jewelry identification industry.Because of its pure optical mechanical structure, the traditional Abbe refractometer can not meet the requirements of precision and efficiency of current industrial technology.Most of the digital refractive index measurement products introduced in the market are complicated in design and expensive in price. The biggest defect is that the refractive index of liquid materials can not be simultaneously measured and the refractive index of liquid materials can not meet the broad demand of the market.In this paper, an intelligent digital display refractometer based on linear CCD image sensor, which can measure both solid and refractive index of liquid materials, is developed for the purpose of high precision and automatic fast measurement.According to the principle of total reflection of light, the isosceles trapezoidal refraction prism is used as the main prism, and the linear array CCD image sensor is used to replace the visual observation. According to the range and resolution, the optical system of the instrument is designed.The monochromatic light source is used to avoid the influence of the dispersion of the measured material.Linear CCD image sensor is used to detect the position of light and dark boundary, which improves the precision and automation of the instrument.Based on the high performance microprocessor C8051F060, the hardware circuit of the whole machine is designed, and the related devices are selected. The schematic drawing of the hardware circuit and the layout of the PCB board are completed by using Altium Designer.The software system of the instrument is designed with C language, including control software and image processing software.Carry on the whole machine hardware and software debugging, can complete the scheduled functions.The instrument principle prototype is tested and tested.The experimental results show that the optical system design is reasonable, the hardware circuit meets the requirements, the man-machine interface is convenient to use, and the refractive index of transparent and semitransparent solid and liquid materials can be measured. It has a good prospect of development and application.
【學位授予單位】：上海工程技術大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TH744

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本文編號：1721500