本文選題：機器視覺 + 光纖環(huán)繞制　； 參考：《中北大學(xué)》2017年碩士論文

【摘要】：光纖環(huán)是由光纖絲按照一定的規(guī)則纏繞而成的圓環(huán)形線圈,它是干涉型光纖陀螺儀的核心部件,光纖環(huán)的繞制品質(zhì)是影響光纖陀螺性能的關(guān)鍵因素。由于光纖直徑誤差、靜電以及內(nèi)應(yīng)力等隨機因素的影響,光纖環(huán)在實際的繞制過程中會偶爾出現(xiàn)一些繞制缺陷。對光纖環(huán)繞制缺陷進行檢測既是光纖環(huán)生產(chǎn)過程中的一個重要環(huán)節(jié),也是保證光纖環(huán)繞制質(zhì)量的必要條件,因此開展基于機器視覺的光纖環(huán)繞制缺陷檢測研究具有重要的理論意義和工程實用價值。結(jié)合光纖繞制的特點和缺陷檢測的要求,完成了光纖繞制缺陷檢測系統(tǒng)的整體設(shè)計,其中對采集系統(tǒng)中的攝像機和鏡頭的選取以及對照明系統(tǒng)中光源的照明方式進行了科學(xué)分析,利用清晰度評價函數(shù)分析了不同光強對光纖環(huán)繞制圖像質(zhì)量的影響,為照明系統(tǒng)中光強的選擇提供了理論依據(jù)。為了消除光纖環(huán)繞制圖像中噪聲對后期的缺陷檢測的干擾,本文對圖像預(yù)處理展開了研究。通過實驗對比以及分析確定了最佳的光纖環(huán)繞制圖像預(yù)處理方法,然后經(jīng)過高斯濾波、灰度增強、圖像分割處理得到了理想的光纖輪廓目標(biāo)圖像。對光纖環(huán)的繞制方法進行了介紹,并根據(jù)繞制的特點提出了一種通用的光纖環(huán)繞制缺陷動態(tài)檢測算法,然后對其中的光纖輪廓邊緣精確定位算法以及缺陷判別算法展開了深入的研究。通過實驗分析了不同光照強度對系統(tǒng)檢測誤差的影響,并驗證了照明系統(tǒng)搭建的合理性。從誤檢率、檢測精度以及檢測速度三個方面對系統(tǒng)進行了實驗。實驗結(jié)果表明:系統(tǒng)的檢測精度可達0.03mm,誤檢率為8%,系統(tǒng)的檢測速度可以滿足實時性要求,從而證實了該系統(tǒng)具有一定的可行性和實用性。
[Abstract]:Fiber optic ring is a kind of ring coil which is made up of fiber optic wire winding according to certain rules. It is the core component of interferometric fiber optic gyroscope. The winding quality of fiber optic ring is the key factor to affect the performance of fiber optic gyroscope. Due to the influence of random factors, such as fiber diameter error, static electricity and internal stress, the fiber ring will occasionally appear some winding defects in the actual winding process. The detection of optical fiber ring defects is not only an important link in the production process of optical fiber ring, but also a necessary condition to ensure the quality of optical fiber ring making. Therefore, the research of optical fiber surround defect detection based on machine vision has important theoretical significance and practical value. According to the characteristics of optical fiber winding and the requirements of defect detection, the overall design of optical fiber wound defect detection system is completed. The selection of the camera and lens in the acquisition system and the illumination mode of the light source in the illumination system are analyzed scientifically, and the influence of different light intensity on the image quality of the optical fiber surround system is analyzed by using the definition evaluation function. It provides a theoretical basis for the choice of light intensity in lighting system. In order to eliminate the noise interference in the optical fiber surround image, the image preprocessing is studied in this paper. Through experimental comparison and analysis, the optimal preprocessing method of optical fiber surround mapping image is determined, and then the ideal optical fiber contour target image is obtained by Gao Si filtering, gray enhancement and image segmentation. In this paper, the winding method of optical fiber ring is introduced, and according to the characteristics of fiber winding, a universal algorithm for dynamic detection of defects in optical fiber encircling is proposed. Then, the optical fiber contour edge accurate location algorithm and defect discrimination algorithm are studied. The influence of different illumination intensity on the detection error of the system is analyzed experimentally, and the rationality of the lighting system is verified. The system is tested from three aspects: false detection rate, detection precision and detection speed. The experimental results show that the detection accuracy of the system can reach 0.03mm, the error detection rate is 8 and the detection speed of the system can meet the real-time requirements, which proves the feasibility and practicability of the system.
【學(xué)位授予單位】：中北大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP391.41

【參考文獻】

相關(guān)期刊論文 前10條

1 丁清;楊瑞峰;郭晨霞;張鵬;;光照度對光纖環(huán)繞制圖像清晰度影響分析[J];科學(xué)技術(shù)與工程;2016年27期

2 陳楚燕;解天鵬;;無參考圖像質(zhì)量評價算法性能分析[J];計算機與數(shù)字工程;2016年02期

3 杜培明;張自強;;基于亞像素精度的鋸齒角度測量[J];軟件導(dǎo)刊;2016年01期

4 李紅芳;;全參考的圖像質(zhì)量評價總結(jié)[J];無線互聯(lián)科技;2015年11期

5 張萬成;葉澤群;;一種用于光纖精密繞線的視覺識別技術(shù)[J];電子工藝技術(shù);2015年03期

6 李淼;;一種基于能量-灰度分布的圖像清晰度評價方法[J];宇航計測技術(shù);2014年02期

7 王麗琴;;光纖陀螺儀及其應(yīng)用[J];自動化與儀器儀表;2013年05期

8 陳亮;李衛(wèi)軍;諶琛;覃鴻;來疆亮;;數(shù)字圖像清晰度評價函數(shù)的通用評價能力研究[J];計算機工程與應(yīng)用;2013年14期

9 丁帥;匡海鵬;王德江;徐正平;丁亞林;;探測器采樣頻率與光學(xué)系統(tǒng)衍射截止頻率比值對航空圖像質(zhì)量的影響[J];光子學(xué)報;2013年07期

10 余燕飛;鄭p，

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