本文選題：車載系統(tǒng) + 上下位機(jī)控制　； 參考：《合肥工業(yè)大學(xué)》2017年碩士論文

【摘要】：隨著汽車工業(yè)的高速發(fā)展,如何提高車輛的智能化,拓展車輛的功能來改善人們的駕駛體驗(yàn)和駕駛樂趣成為汽車技術(shù)的重要研究方向。本文研究并設(shè)計(jì)了一種可安裝在車輛上的裝置,實(shí)現(xiàn)駕乘者在車內(nèi)看窗外景象時(shí),可以任意設(shè)定其所看到的車外視覺環(huán)境且不影響駕駛安全,從而通過在視覺上對車外環(huán)境進(jìn)行改善來提升駕乘者的駕駛體驗(yàn)及駕駛樂趣。并且利用該設(shè)備還能便于其它智能功能的實(shí)現(xiàn),具有一定的擴(kuò)展性。本文主要對車外視覺改善系統(tǒng)的研究設(shè)計(jì)過程做出分析闡述。首先明確了總體設(shè)計(jì)思路為使用攝像頭對前方景物進(jìn)行拍攝,并將經(jīng)過處理的畫面顯示在擋風(fēng)玻璃顯示屏上。針對方案中會(huì)出現(xiàn)的畫面錯(cuò)位問題進(jìn)行分析,提出了使用基于人臉識(shí)別定位的可活動(dòng)多攝像頭的解決方法,即根據(jù)人臉位置確定攝像頭的轉(zhuǎn)角,使每個(gè)攝像頭軸線通過人眼。之后根據(jù)設(shè)計(jì)所要達(dá)到的功能,按照電動(dòng)機(jī)、傳感器、控制芯片的選型規(guī)則,確定設(shè)計(jì)以PC為上位機(jī),STC89C52RC為下位機(jī)主控芯片,結(jié)合PCF8591、ULN2003、步進(jìn)電機(jī)、直線位移傳感器等器件而成的一套反饋控制系統(tǒng)。該系統(tǒng)是一個(gè)軟硬件相結(jié)合的綜合性系統(tǒng),包括攝像頭活動(dòng)平臺(tái)、攝像頭固定平臺(tái)、雙攝像頭人臉識(shí)別定位程序、步進(jìn)電機(jī)控制程序、傳感器信號處理程序、串口通信及數(shù)據(jù)處理程序、視頻采集處理程序等。本文對最終所搭建的實(shí)物平臺(tái)進(jìn)行了標(biāo)定與調(diào)試工作,保證整套系統(tǒng)可正常運(yùn)行并進(jìn)行試驗(yàn),驗(yàn)證了本設(shè)計(jì)方案的可行性和實(shí)用性,對于該裝置未來的研究發(fā)展方向具有一定指導(dǎo)意義。
[Abstract]:With the rapid development of automobile industry, how to improve the intelligence of vehicles and expand the functions of vehicles to improve people's driving experience and driving fun has become an important research direction of automotive technology. This paper studies and designs a device that can be installed on a vehicle. When a driver looks out of the window of a car, he can set the visual environment he sees outside the vehicle without affecting the driving safety. Thus, the driver's driving experience and driving pleasure can be improved through visual improvement of the external environment. And the device can also facilitate the realization of other intelligent functions, and has a certain expansibility. In this paper, the research and design process of the external vision improvement system is analyzed and expounded. First, the overall design idea is to use the camera to shoot the front scene, and display the processed images on the windscreen display. Based on the analysis of the problem of image dislocation in the scheme, a new method is proposed to solve the problem of moving multi-camera based on face recognition, that is, to determine the rotation angle of the camera according to the position of the face, so that each axis of the camera can pass through the human eye. Then, according to the function to be achieved, according to the selection rules of motor, sensor and control chip, it is determined that the design takes PC as upper computer and STC89C52RC as master control chip of lower computer, combined with PCF8591 / ULN2003, step motor, A set of feedback control system composed of linear displacement sensor and other devices. The system is a software and hardware integrated system, including camera moving platform, camera fixed platform, dual camera face recognition and positioning program, step motor control program, sensor signal processing program. Serial communication and data processing procedures, video acquisition and processing procedures. In this paper, the calibration and debugging of the final physical platform are carried out to ensure the normal operation and test of the whole system, and the feasibility and practicability of the design scheme are verified. It has certain guiding significance for the future research and development of the device.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U463.6;TP391.41

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