【摘要】：帶式輸送機(jī)是一種現(xiàn)代化生產(chǎn)中的連續(xù)運(yùn)輸設(shè)備,具有運(yùn)量大、運(yùn)距遠(yuǎn)、能耗小、運(yùn)費(fèi)低、裝卸方便、適合于散料運(yùn)輸?shù)忍攸c(diǎn),已廣泛應(yīng)用于煤炭、礦山、港口、電力、冶金、化工等領(lǐng)域。輸送帶是帶式輸送機(jī)的牽引和承載的關(guān)鍵部件。由于帶式輸送機(jī)安裝調(diào)整不當(dāng)、落料點(diǎn)落料不正、長(zhǎng)期在惡劣環(huán)境下使用等原因,會(huì)造成輸送帶發(fā)生跑偏、表面損傷和縱向撕裂等故障。如果這些故障得不到及時(shí)檢測(cè)和處理,會(huì)引發(fā)重大斷帶和縱向撕裂等安全事故,造成停產(chǎn)、運(yùn)輸物料的損耗、設(shè)備的損壞和人員的傷亡,嚴(yán)重影響安全生產(chǎn)。為了保證帶式輸送機(jī)運(yùn)輸?shù)陌踩?因此需要研究一種多視點(diǎn)輸送帶縱向撕裂檢測(cè)系統(tǒng),實(shí)現(xiàn)對(duì)輸送帶跑偏、表面損傷和縱向撕裂等故障的在線檢測(cè),避免重大縱向撕裂安全事故的發(fā)生,提高檢測(cè)的全面性。本文針對(duì)多視點(diǎn)輸送帶縱向撕裂檢測(cè)系統(tǒng)中視頻監(jiān)測(cè)終端的處理傳輸模塊進(jìn)行了研究,提出了一種多視點(diǎn)輸送帶縱向撕裂檢測(cè)系統(tǒng)視頻監(jiān)測(cè)終端的處理傳輸模塊的設(shè)計(jì)方案,采用四路線陣CCD傳感器同時(shí)采集輸送帶圖像,實(shí)現(xiàn)了對(duì)四路輸送帶圖像數(shù)據(jù)的獲取、壓縮編碼、處理及傳輸,提高了輸送帶圖像采集范圍;采用TI公司的DSP(TMS320C6748)設(shè)計(jì)了處理傳輸模塊的硬件電路,包括數(shù)據(jù)傳輸接口電路、數(shù)據(jù)處理器電路和以太網(wǎng)接口電路;根據(jù)輸送帶圖像的灰度特點(diǎn),提出了一種基于log變換的輸送帶圖像JPEG壓縮編解碼及特征增強(qiáng)算法,實(shí)現(xiàn)了對(duì)輸送帶圖像的壓縮編碼和縱向撕裂部分的特征增強(qiáng),并在MATLAB平臺(tái)上進(jìn)行了仿真實(shí)驗(yàn),驗(yàn)證了該算法的有效性;在CCS軟件開(kāi)發(fā)平臺(tái)上,利用C語(yǔ)言編寫(xiě)了基于SYS/BIOS操作系統(tǒng)的DSP軟件,搭建了多視點(diǎn)輸送帶縱向撕裂檢測(cè)系統(tǒng)中視頻監(jiān)測(cè)終端的處理傳輸模塊的實(shí)驗(yàn)平臺(tái),對(duì)所設(shè)計(jì)的處理傳輸模塊進(jìn)行了測(cè)試,結(jié)果表明該模塊能夠?qū)崿F(xiàn)對(duì)四路輸送帶圖像數(shù)據(jù)的采集、壓縮編碼、特征增強(qiáng)及以太網(wǎng)傳輸?shù)裙δ�。本課題研究的處理傳輸模塊可應(yīng)用于多視點(diǎn)輸送帶縱向撕裂檢測(cè)系統(tǒng)中,具有輸送帶圖像采集范圍大、壓縮效率高、實(shí)時(shí)性強(qiáng)等優(yōu)點(diǎn),在煤炭、礦山、港口、電力、冶金、化工等領(lǐng)域具有廣泛的應(yīng)用前景,能夠避免重大縱向撕裂安全事故的發(fā)生和人員傷亡,減少運(yùn)輸物料損耗、設(shè)備損壞和經(jīng)濟(jì)損失。
[Abstract]:Belt conveyor is a kind of continuous transportation equipment in modern production. It has the characteristics of large capacity, long distance, low energy consumption, low freight, convenient loading and unloading, suitable for bulk transportation and has been widely used in coal, mines, ports, electric power, metallurgy, etc. Chemical industry, etc. Conveyor belt is the key component of belt conveyor. Due to improper installation and adjustment of belt conveyer, improper blanking point, long term use in bad environment and other reasons, the belt will be run off, surface damage and longitudinal tear will occur. If these faults can not be detected and dealt with in time, it will lead to serious safety accidents such as broken belt and longitudinal tear, which will result in shutdown, material loss, equipment damage and casualties, which will seriously affect safety in production. In order to ensure the safety of belt conveyor transportation, it is necessary to study a multi-view belt longitudinal tear detection system to realize the on-line detection of belt deviation, surface damage and longitudinal tear. Avoid the occurrence of major longitudinal tear safety accident, improve the overall detection. In this paper, the processing and transmission module of the video monitoring terminal in the multi-view belt longitudinal tear detection system is studied, and a design scheme of the video processing transmission module of the multi-view belt longitudinal tear detection system is proposed. The four path array CCD sensor is used to collect the images of the conveyor belt at the same time. The image data of the four conveyors are obtained, compressed and coded, processed and transmitted, and the range of the image acquisition of the conveyer belt is improved. The hardware circuit of processing transmission module is designed by DSP (TMS320C6748) of TI Company, including data transmission interface circuit, data processor circuit and Ethernet interface circuit. In this paper, a JPEG compression coding and decoding algorithm and feature enhancement algorithm based on log transform for conveyor belt image are proposed. The feature enhancement of the compression coding and longitudinal tearing part of the conveyor belt image is realized, and the simulation experiment is carried out on the MATLAB platform. The validity of the algorithm is verified, and the DSP software based on SYS/BIOS operating system is programmed by C language on the CCS software development platform. The experiment platform of the processing and transmission module of video monitoring terminal in the longitudinal tear detection system of multi-view conveyor belt is built, and the designed processing transmission module is tested. The results show that the module can realize the functions of image data acquisition, compression and coding, feature enhancement and Ethernet transmission. The processing and transmission module studied in this paper can be used in the longitudinal tear detection system of multi-view conveyor belt. It has the advantages of large range of image collection, high compression efficiency, strong real-time, etc., in coal, mine, port, power, metallurgy, etc. Chemical industry and other fields have a wide application prospect, can avoid the occurrence of serious longitudinal tear safety accidents and casualties, reduce the loss of transport materials, equipment damage and economic losses.
【學(xué)位授予單位】：天津工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TH222;TP391.41

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