【正文】 } } if(KEY_INT==0) { KEY=ZLG7290_GetKey()。a[2]=39。 disp_buf[6]=31。 else 1++。 while(1) { uchar i,m。 /*跳過讀序號列號的操作 */ writebyte(0xBE)。 writebyte(0x4E)。 if(DQ) dat|=0x80。 DQ = 1。 ISendStr(zlg7290,0x07,Data,2)。 /*結(jié)束總線 */ return(1)。 Start_I2c()。 /*發(fā)送器件子地址 */ if(ack==0)return(0)。 _Nop()。 _Nop()。 SDA=1。 _Nop()。 _Nop()。 _Nop()。 uchar 1=1。其一是中斷方式，該方式的優(yōu)點是抗干擾能力強，缺點是要占用微控制器的一個外部中斷源。采用 I2C 總線方式，與微控制器的接口僅需兩根信號線。 DS18B20 的測溫原理是這這樣的 ,器件中低溫度系數(shù)晶振的振蕩頻率受溫度的影響很小，用于產(chǎn)生固定頻率的脈沖信號送給減法計數(shù)器１；高溫度系數(shù)晶振 隨溫度變化其振蕩頻率明顯改變，所產(chǎn)生的信號作為減法計數(shù)器２的脈沖輸入。該字節(jié)各位的定義如圖 3 所示。 本數(shù)字溫度計設(shè)計采用美國 DALLAS 半導(dǎo)體公司繼 DS1820 之后推出的一種改進(jìn)型智能溫度傳感器 DS18B20作為檢測元件，測溫范圍為 55~125℃，最高分辨率可達(dá) ℃。 ⑵掌握 RS232 串行總線通信 原理 及單片機 與 PC機通信方法 。 關(guān)鍵詞： 溫度、傳感器、 yeelink、物 聯(lián)網(wǎng)、遠(yuǎn)程采集 內(nèi)蒙古科技大學(xué) 信息工程學(xué)院實訓(xùn)報告 III Abstract With the rapid development of the Inter, many new industries emerged and flourished, it is in this wave of Inter of things platform emerge as the times require Yeelink. Yeelink is the universal substance an open work platform, mainly to provide sensor data access, storage and display services, open source software and hardware enthusiasts, all manufacturing enterprises, to provide a IOT project platform. The hardware and the manufacturer cannot care about server implementation details and operation, capability of electronic products have a IOT of delivery. The biggest characteristic of Yeelink platform, is not only to provide uplink data, also can realize the control function of household electrical appliances, want to wash a hot bath es before, or to turn on the air conditioner in advance? Very simple, intelligent mobile phone App, these are to lift a finger. Say simply, is that we can put your collected data submitted to the Yeelink, and the Yeelink will be displayed in a certain form. For example, we collect temperature data, and then submitted to go up, so, whether you are in where, as long as you can access the Inter, you can monitor realtime temperature value. This training contents is through digital temperature sensor will be realtime collection of temperature in the digital tube display, and send it to PC through the serial port, PC posted to the Inter through Yeelink serial port forwarding tool. Keys: Temperature Sensor Yeelink Fetishism Remote monitoring 內(nèi)蒙古科技大學(xué) 信息工程學(xué)院實訓(xùn)報告 1 目錄 實訓(xùn)任務(wù)書 .................................................................................................................................I 摘 要 ....................................................................................................................................... II Abstract ..................................................................................................................................... III 硬件電路 ..................................................................................................................... 2 背景知識 ........................................................................................................... 2 課題介紹 ........................................................................................................... 2 主要原理 ........................................................................................................... 2 主控制器 ................................................................................................ 2 顯示電路 ................................................................................................ 2 溫度傳感器 ............................................................................................ 2 DS18B20 溫度傳感器與單片機的接口電路 ........................................ 7 ZLG7290 芯片 ........................................................................................ 7 ZLG7290 作用及其功能介紹 ................................................. 7 ZLG7290 使用說明 ................................................................ 7 ZLG7290 工作原理 ................................................................................ 8 系統(tǒng)構(gòu)成框圖 ................................................................................................... 8 系統(tǒng)原理介紹 ................................................................................................... 8 軟件流程圖 ....................................................................................................... 9 軟件程序 ................................................................................................................... 10 程序清單及注釋 ............................................................................................. 10 實驗小結(jié) .................................