【摘要】：中國(guó)作為世界第一的鮮辣椒生產(chǎn)大國(guó),辣椒加工生產(chǎn)的機(jī)械有收獲機(jī)、清洗機(jī)、色選機(jī)、去核機(jī)以及去把機(jī),然而對(duì)辣椒分級(jí)的機(jī)械還是空白。辣椒等級(jí)分選機(jī)是利用機(jī)器視覺(jué)對(duì)辣椒的大小和病殘識(shí)別進(jìn)行分選,將辣椒分為大中小三個(gè)等級(jí),并且剔除病殘辣椒。為了實(shí)現(xiàn)辣椒等級(jí)分選的機(jī)械自動(dòng)化,本文提出一種基于機(jī)器視覺(jué)的辣椒等級(jí)分選機(jī)械方案,完成對(duì)辣椒的分選。研究?jī)?nèi)容如下：(1)通過(guò)研究辣椒的外形大小和物理特性,得出辣椒的外觀參數(shù)為辣椒的果長(zhǎng)和寬度,確定了辣椒分級(jí)的評(píng)定指標(biāo)為辣椒分選合格率和辣椒分選效率。(2)通過(guò)機(jī)器視覺(jué)研究辣椒的外觀大小,提出了基于最小外接矩形的算法求出辣椒的大小,識(shí)別的正確率為95%,能夠滿足分選生產(chǎn)的要求。選擇RGB和HSI顏色模型對(duì)辣椒的外觀缺陷進(jìn)行檢測(cè)識(shí)別。(3)根據(jù)辣椒的外形大小和實(shí)際要求對(duì)辣椒等級(jí)分選試驗(yàn)平臺(tái)進(jìn)行了整體方案的設(shè)計(jì),介紹了試驗(yàn)平臺(tái)的三個(gè)部分的機(jī)構(gòu)原理和設(shè)計(jì)參數(shù),對(duì)整機(jī)進(jìn)行了干涉仿真,保證了試驗(yàn)平臺(tái)的可靠性。(4)通過(guò)制造整機(jī)并對(duì)其參數(shù)進(jìn)行單因素試驗(yàn)和二次正交旋轉(zhuǎn)回歸試驗(yàn),得到了辣椒分選機(jī)構(gòu)輸送帶的輸送速度與傾斜角度最佳參數(shù)組合。
[Abstract]:As the world's first fresh pepper production country, the machine for processing the hot pepper has a harvester, a cleaning machine, a color sorter, an enucleating machine and a de-centering machine. Hot pepper and other fractions are selected by the machine vision to identify the size of the pepper and the identification of the disease, and the hot pepper is divided into three levels of large and small, and the red pepper is removed. In order to realize the mechanical automation of the extraction of such fractions, a mechanical scheme based on the machine vision was proposed in this paper to complete the separation of the hot pepper. The results of the study are as follows: (1) By studying the shape and physical characteristics of the pepper, it is concluded that the appearance parameter of the pepper is the fruit length and the width of the pepper, and the evaluation index of the classification of the pepper is determined as the yield of the hot pepper and the efficiency of the separation of the hot pepper. (2) The appearance and size of the pepper are studied by machine vision, and a minimum circumscribed rectangle algorithm is proposed to determine the size of the pepper. The correct rate of identification is 95%, which can meet the requirements of the separation and production. And the color model of the RGB and the HSI is selected to detect the appearance defect of the pepper. (3) According to the shape and size of the pepper and the actual requirement, the experiment platform of the grade of the hot pepper is designed, the mechanism principle and the design parameters of the three parts of the test platform are introduced, and the interference simulation of the whole machine is carried out, and the reliability of the test platform is ensured. And (4) carrying out single factor test and secondary orthogonal rotation regression test on the parameters of the whole machine, and obtaining the optimal parameter combination of the conveying speed and the inclination angle of the conveying belt of the pepper sorting mechanism.
【學(xué)位授予單位】：湖南農(nóng)業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TP391.41;S641.3

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