【正文】 跳過(guò)這一子任務(wù)；如果有多個(gè)激活條件出現(xiàn)，主調(diào)度負(fù)責(zé)仲裁．系統(tǒng)初始化的功能是建立系統(tǒng)使用環(huán)境，包括 CAN 總線接口初始化、時(shí)鐘芯片 初始化等． CAN 信息幀處理模塊主要實(shí)現(xiàn)利用 CAN 總線實(shí)現(xiàn)控制臺(tái)和各控制節(jié)點(diǎn)之間的通信．鍵盤按鍵處理模塊主要用來(lái)實(shí)現(xiàn)鍵盤的輸入按鍵的識(shí)別及相關(guān)處理．顯示處理和報(bào)警模塊則實(shí)現(xiàn)根據(jù)數(shù)據(jù)時(shí)間處理模塊處理的結(jié)果傳送至 LCD 顯示，并控制報(bào)警系統(tǒng)．?dāng)?shù)據(jù)和時(shí)間處理模塊主要是實(shí)現(xiàn)對(duì)從CAN 總線接口接受來(lái)的數(shù)據(jù)進(jìn)行處理并保存到 AT24C128 中，并根據(jù)系統(tǒng)時(shí)間和溫度報(bào)警設(shè)定值做相應(yīng)的處理．最后的中斷控制模塊用實(shí)現(xiàn) CAN 總線接以口實(shí)時(shí)通信和鍵盤按鍵實(shí)時(shí)響應(yīng)． 3． 2 控制節(jié)點(diǎn)軟件設(shè)計(jì) 控制節(jié)點(diǎn)的主要功能是和控制臺(tái)通信，檢測(cè)分布在每 個(gè)房問(wèn)中的 DSl8820 的溫度值，如果超過(guò)限定值，則向控制臺(tái)報(bào)警并控制該房間的空調(diào)風(fēng)門．同時(shí)通過(guò) CAN 總線向控制臺(tái)報(bào)告房間號(hào)和溫度值．根據(jù) DSl8820 的通信協(xié)議，節(jié)點(diǎn)單片機(jī)控制 DSl8820 完成溫度轉(zhuǎn)換必須經(jīng)過(guò)三個(gè)步驟：每一次讀寫(xiě)之前都要對(duì) DSl8820 進(jìn)行復(fù)位，復(fù)位成功后發(fā)送～條 ROM 指令，最后發(fā)送 RAM 指令嘲，這樣才能對(duì) DSl8820 進(jìn)行預(yù)定的操作．復(fù)位要求單片機(jī)將數(shù)據(jù)線下拉500μs，然后釋放， DSl8820 收到信號(hào)后等待 16～ 60μs左右，后發(fā)出 60— 240μs 的存在低脈沖，單片機(jī)收到此信號(hào)表示復(fù) 位成功． 當(dāng)單片機(jī)執(zhí)行 傳感器 DS18B20 測(cè)量溫度 程序的流程時(shí)，它會(huì)發(fā)出溫度變換命令。單片機(jī)會(huì) 等待傳感器 DS18B20 變?yōu)?低信號(hào)。 一旦與傳感器 DS18B20 連接的總線不好或者損壞，單片機(jī)將無(wú)法讀取低信號(hào)，并進(jìn)入無(wú)限循環(huán)等待。 因此，我們 通過(guò) 單片機(jī)的定時(shí)器中斷系統(tǒng)來(lái)解決這個(gè)的問(wèn)題。 4. 結(jié)論 實(shí)地測(cè)試后，該系統(tǒng)可 以有效的 實(shí)現(xiàn) 樓宇 溫度檢測(cè)與控制 .并且 該系統(tǒng)可以應(yīng)用到其他設(shè)備 的 檢測(cè)和控制，以實(shí)現(xiàn) 樓宇 智能化管理。雖然 CAN 總線是一種用于分布式工業(yè)控制的串行通信網(wǎng)絡(luò)， 但 該系統(tǒng)還可以廣泛應(yīng)用于其他需要實(shí)時(shí)多點(diǎn)測(cè)量和控制 的地區(qū) 。 圖 4 控制臺(tái)程 序結(jié)構(gòu)圖 共 4 頁(yè) 第 4 頁(yè) 指 導(dǎo) 教 師 評(píng) 語(yǔ) 外文翻譯成績(jī)： 指導(dǎo)教師簽字： 年 月 日 注： 1。 指導(dǎo)教師對(duì)譯文進(jìn)行評(píng)閱時(shí)應(yīng)注意以下幾個(gè)方面：①翻譯的外文文獻(xiàn)與畢業(yè)設(shè)計(jì)（論文）的主題是否高度相關(guān)，并作為外文參考文獻(xiàn)列入畢業(yè)設(shè)計(jì)（論文）的參考文獻(xiàn)；②翻譯的外文文獻(xiàn)字?jǐn)?shù)是否達(dá)到規(guī)定數(shù)量（ 3 000 字以上）；③譯文語(yǔ)言是否準(zhǔn)確、通順、具有參考價(jià)值。 2。 外文原文應(yīng)以附件的方 式置于譯文之后。 共 4 頁(yè) 第 5 頁(yè) Distributed Building Temperature Control System Based on CAN Bus Abstract This paper proposed a kind of distributed buildingtemperature control system based on CAN Bus, and has produced the system of hardware structure design, the software design, can examine the building temperature and control the exceptional on the realtime, be indicated through experiment that system is reliable and save energy. KeyWords: temperature control； CAN Bus； energy saving 1 Introduction Gradually climbs along with the temperature, electric power industry weled has used electricity once a year most seasons: The electric power weles a peak summer. Since 2021, the power supplied has bee more and more serious in china. And more and more people appeal for building energy conservation. Air conditioning?s energy conservation is one of the most important ponents of building energy conservation[1]. Many public buildings air conditioning is one of highest energy consumption sources in China. Take Beijing as the example, in 2021, although the Beijing largescale public building only accounts for the whole city civil construction total area %, but whole year the total power consumption actually achieved billion kilowatts[2], approach all inhabitants to live use electricity one half, according to the preliminary understanding, Beijing39。s public building generally can achieved to energy saving for 30% to 50%through technology transformation, One of most important method is through the realtime examination building interior temperature to control building in air conditioning. 2 The principle of system structure and hardware design Regarding the different building, its internal room distributes and constructs is different, in order to realize the system construct conveniently, the system uses the distributional structure, Based on the SJA1000 CAN munications platform in order to realize various pitch points reliable munication。 In this foundation, the console set each pitch point temperature value setting for every room, and realize the entire building temperature realtime examination, by the LCD demonstration examination result, the unusual situation is reported by the warning through speech Property by the signal and controlled through the gate of air conditioning?s system , realization energy conservation goal. The system design goal is measure and control temperature in a building each room, because measured the temperate point and control point is dispersion, therefo