本文選題：深海照相 + MIPI　； 參考：《杭州電子科技大學》2015年碩士論文

【摘要】：隨著全球人口的不斷膨脹和有限資源的逐漸消耗,人類日益增加的資源需求與陸地上可開采資源有限的矛盾日益突出。而占據(jù)地球表面積71%的海洋是資源豐富的寶庫,不僅孕育了種類繁多的生物資源,而且蘊藏了豐富的礦產資源。進入21世紀以來,科技的高速發(fā)展,人類對資源勘探的腳步已經從陸地邁向礦產資源更加豐富的海洋領域。水下拍攝是海洋勘探中勘探海底礦產資源的一種重要的手段,能夠充當“眼睛”來直觀地觀察到水下的光影圖像信息。而深海照相機是一種用于在海底和在水中攝取地質、生物以及海水流動態(tài)的專門的照相機�，F(xiàn)如今國內外的深海相機產品種類很多,性能各有不同,功能用途也不一,如AXSUB公司的水下攝像機Ax SEE57,Kongsberg公司的水下高清照相機oe14-408等。但這些水下相機的功能單一,攝像機不支持高清拍照,照相機不支持遠端圖像預覽,造成深海照相設備在水下獲取的圖像數(shù)據(jù)信息大部分都是沒有研究意義的。本論文主要研究一種基于OMAP平臺上提供實時遠端圖像預覽功能的CMOS水下相機系統(tǒng)。其主要內容如下:1.系統(tǒng)總結歸納了關于深海相機的國內外發(fā)展現(xiàn)狀以及當前深海相機的特點,概述了本文的研究內容和主要工作,并對相關原理進行了闡述。2.分析了深海照相系統(tǒng)的組成,包括水下照明設計和水下圖像采集系統(tǒng)設計。對水下照明部分的設計包括前端耐壓玻璃透鏡的設計和水下光源選擇以及照明方式的選擇。對于水下圖像采集系統(tǒng)部分,采用嵌入式Linux操作系統(tǒng)為軟件運行平臺,以ARM內核處理器OMAP4460為硬件平臺核心,另外采用MIPI CSI2a接口作為成像部分與圖像處理控制部分的傳輸接口,采用TCP傳輸協(xié)議傳輸圖像數(shù)據(jù)來實現(xiàn)遠端圖像預覽,進而實現(xiàn)水下圖像采集系統(tǒng)整體功能。3.針對系統(tǒng)的功能對系統(tǒng)的硬件平臺進行模塊化設計,主要分成水下成像部分和圖像處理控制部分。水下成像部分主要包括圖像傳感器以及其接口模塊和電源模塊設計。圖像處理控制部分包括MIPI CSI2接口圖像采集模塊、以太網模塊、存儲模塊等。另外針對系統(tǒng)的水下照明部分進行了閃光燈驅動的硬件設計。4.針對軟件運行平臺的系統(tǒng)軟件層次結構,將整體軟件分為圖像傳感器驅動和圖像采集應用程序兩部分。描述了整個系統(tǒng)的軟件開發(fā)流程,闡述了整個系統(tǒng)的工作流程,并詳細說明了圖像采集部分和數(shù)據(jù)傳輸部分。5.針對水下的抗壓和密封性問題,研究了水下密封結構和深海環(huán)境下的抗壓結構。考慮到電子器件的大小,設計了深�？箟号擉w的整體結構和密封結構。測試結果表明本論文研究的基于OMAP平臺的深海照相系統(tǒng)可以實現(xiàn)實時遠端圖像顯示并可以通過控制快門進行拍照保存,達到設計要求。
[Abstract]:With the continuous expansion of global population and the gradual consumption of limited resources, the contradiction between the increasing demand of human resources and the limited resources on land is becoming increasingly prominent. The ocean, which occupies 71% of the earth's surface area, is rich in resources, which not only breeds a wide variety of biological resources, but also contains rich mineral resources. Since the 21st century, with the rapid development of science and technology, the pace of human exploration for resources has moved from land to mineral resources more abundant marine field. Underwater photography is an important means to explore seabed mineral resources in ocean exploration. It can act as an "eye" to directly observe the image information of underwater light and shadow. Deep-sea cameras are specialized cameras for capturing geological, biological, and sea-water flows at the bottom and in water. Nowadays, there are many kinds of deep-sea cameras at home and abroad, such as AXSUB underwater camera Ax SEE57, Kongsberg underwater high-definition camera oe14-408 and so on. But the function of these underwater cameras is single, the camera does not support high-definition photography, the camera does not support remote image preview, so most of the image data information acquired by deep-sea camera under water is meaningless. This paper mainly studies a CMOS underwater camera system based on OMAP platform which provides real-time remote image preview function. Its main content is as follows: 1. This paper systematically summarizes the development of deep-sea cameras at home and abroad and the characteristics of deep-sea cameras at present, summarizes the research contents and main work of this paper, and expounds the related principles. The composition of deep-sea photographic system is analyzed, including underwater illumination design and underwater image acquisition system design. The design of underwater lighting includes the design of front-end pressure-resistant glass lens, the choice of underwater light source and the choice of lighting mode. For the underwater image acquisition system, the embedded Linux operating system is used as the software running platform, the ARM kernel processor OMAP4460 as the hardware platform core, and the MIPI CSI2a interface as the transmission interface between the imaging part and the image processing control part. The remote image preview is realized by using TCP protocol to transmit image data, and the whole function of underwater image acquisition system is realized. 3. According to the function of the system, the hardware platform is modularized, which is divided into underwater imaging part and image processing control part. Underwater imaging mainly includes image sensor, its interface module and power module design. Image processing control part includes MIPI CSI2 interface image acquisition module, Ethernet module, storage module and so on. In addition, the hardware design of flash drive for the underwater lighting part of the system. 4. According to the software hierarchy of the software platform, the whole software is divided into two parts: image sensor driver and image acquisition application. The software development flow of the whole system is described, the work flow of the whole system is expounded, and the image acquisition part and data transmission part. 5 are described in detail. Aiming at the problem of underwater pressure resistance and sealing, the underwater seal structure and the deep sea structure are studied. Considering the size of electronic devices, the whole structure and sealing structure of deep-sea compression cabin are designed. The test results show that the deep-sea camera system based on OMAP platform in this paper can realize real-time remote image display and can be photographed and saved by controlling shutter to meet the design requirements.
【學位授予單位】：杭州電子科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P715.5

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本文編號：1968371