【正文】 or, MCU system and the corresponding external circuit, and so on. Photoelectric detection system is used to track solar. Sensors use photosensitive resistance. The two same photosensitive resistances were placed in east and west direction of the bottom edge .When the two photosensitive resistances received different light at the same time, the signal from parison circuit is sent to MCU in order to rotate stepping motors. Keywords ： Solar energy Tracking Photosensitive resistance SCM Stepping motor 畢業(yè)設(shè)計說明書 第 1 頁 目錄 1 緒論 .............................................................................................................................................. 1 課題來源 ................................................................................................................................ 1 課題背景 ................................................................................................................................ 1 能源現(xiàn)狀及發(fā)展 .............................................................................................................. 1 我國太陽能資源 .............................................................................................................. 1 目前太陽能的開發(fā)和利用 .............................................................................................. 1 太陽能的特點 .................................................................................................................. 1 課題研究的目的 ................................................................................................................. 2 研究課題的意義 .................................................................................................................... 2 新環(huán)保能源 ...................................................................................................................... 2 提高太陽能的利用率 ...................................................................................................... 3 太陽能利用的國內(nèi)外發(fā)展現(xiàn)狀 ............................................................................................ 3 太陽追蹤系統(tǒng)的國內(nèi)外研究現(xiàn)狀 ........................................................................................ 4 論文的研究內(nèi)容 .................................................................................................................... 5 論文結(jié)構(gòu) ................................................................................................................................ 5 2 太陽能自動跟蹤系統(tǒng)總體設(shè)計 .................................................................................................. 6 本課題的機械設(shè)計方案 ....................................................................................................... 6 跟蹤方案的比較選擇 ............................................................................................................ 7 本設(shè)計的跟蹤方案 .......................................................................................................... 7 3 機械設(shè)計部分 .............................................................................................................................. 8 太陽能自 動跟蹤系統(tǒng)機械設(shè)計方案 .................................................................................... 8 電池板的選擇及布局分析 .................................................................................................... 8 太陽能電池板的發(fā)展及種類 .......................................................................................... 8 電池板的參數(shù)和選擇 .................................................................................................... 10 太陽能電池板的布局和分析 ..................................................................................