【正文】 內(nèi)核。由于其先進(jìn)的 指令集 以及單時(shí)鐘周期指令執(zhí)行時(shí)間，ATmega16 的 數(shù)據(jù)吞吐率 高達(dá) 1 MIPS/MHz，從而可以減緩系統(tǒng)在功耗和處理速度之間的矛盾，且其跟 51 類單片機(jī)相比，具有超低功耗和 內(nèi)置晶振等特點(diǎn)。 系統(tǒng)方案設(shè)計(jì) 主控芯片方案 方案一：采用宏晶科技有限公司的 STC90C52Rc 單片機(jī)作為主控芯片。紅外模塊可用于監(jiān)測(cè)各監(jiān)測(cè)節(jié)點(diǎn)附近有無(wú)老鼠，試驗(yàn)中未做出。而無(wú) 線 方式的 測(cè)溫濕 度系統(tǒng)不存在以上的這些問(wèn)題，為此，采用無(wú)線實(shí)時(shí)的 溫濕 度檢測(cè)系統(tǒng)， 對(duì)數(shù)據(jù)進(jìn)行采集、 裝載、 發(fā)送、并 由終端 對(duì)無(wú)線采集來(lái)的數(shù)據(jù)進(jìn)行相應(yīng)處理，以控制監(jiān)測(cè)設(shè)備的運(yùn)行情況， 可大大的 減少不必要的線路設(shè)備開支 (張玉建， 20xx)。 隨著嵌入式技術(shù)，短距離無(wú)線通信技術(shù)、傳感器網(wǎng)絡(luò)技術(shù)等的不斷發(fā)展，電子設(shè)備檢測(cè)技術(shù)可以大大的降低糧倉(cāng)的管理成本。 關(guān)鍵字： ATmega16 AM2301 無(wú)線傳輸 nRF24L01 Wireless Temperature and Humidity Monitoring System in Barn Shi Jianzhu (College of Engineering, South China Agricultural University, Guangzhou 510642, China) Abstract:Temperature and humidity is a very important parameter. In many places, such as the industrial, medical, and military, you need the temperature and humidity measurement device to monitor temperature and humidity. Direct wiring measurement does not meet the requirements, especially in some environments, such as, harsh industrial environments and outdoor environments. Therefore, the wireless transmission of temperature and humidity information is particularly necessary. At present, some devices can be used to monitor wireless temperature and humidity, but the price is the biggest drawback, the price is too high. The system must be stable, realtime and low power consumption in actual control. Therefore, the design of a lowpower consumption wireless temperature and humidity monitoring system makes sense. This paper presents a solution for wireless data transmission, the program is based on the nRF24L01 to design the monitorint system of wireless temperature and humidity. The system uses the traditional microcontroller ATmega16 and digital temperature and humidity sensor AM2301 to form multipoint, realtime wireless temperature and humidity monitoring system. Through a simple wireless munication protocols, bring about reliability and power balance. The system is a remote wireless temperature and humidity monitoring system. The system uses wireless munication technology to build a distributed wireless sensor works. The temperature and humidity data acquisition and transmission based on sensor nodes, with a simple work, easy maintenance, low operation cost. The system can be applied to a large granary temperature and humidity monitoring. Key word: ATmega16 AM2301 Wireless Transmission nRF24l01 目 錄 1 前言 .......................................................................................................................................1 2 系統(tǒng)方案分析與選擇論證 ...................................................................................................1 系統(tǒng)最終方案 ................................................................................................................... 1 系統(tǒng)方案設(shè)計(jì) ................................................................................................................... 2 主控芯片方案 ................................................................................................................ 2 無(wú)線通信模塊方案 ........................................................................................................ 2 溫濕度傳感器方案 ........................................................................................................ 3 顯示模塊方案 ................................................................................................................ 3 3 主要芯片介紹和系統(tǒng)模塊硬件設(shè)計(jì) ...................................................................................4 ATmega16L8AI 單片機(jī) .................................................................................................. 4 nRF24L01 無(wú)線模塊 ........................................................................................................ 5 nRF24L01 模塊電路圖 ................................................................................................. 5 nRF24L01 模塊接口電路 ............................................................................................. 5 nRF24L01 模塊供電電源 ............................................................................................. 6 nRF24L01 模塊工作模式 ............................................................................................. 6 nRF24L01 模塊工作原理 ............................................................................................. 7 nRF24L01 配置字 ......................................................................................................... 8 數(shù)字溫濕度傳感器 AM2301 .......................................................................................... 8 AM2301 概述 ................................................................................................................ 8 AM2301 接口及溫濕采集電路 .................................................................................... 9 AM2301 工作原理 ........................................................................................................ 9 顯示模塊 TFTLCD ....................................................................................................... 10 4 系統(tǒng)軟件設(shè)計(jì) .....................................................................................................................11 單片機(jī)軟件設(shè)計(jì) ............................................................................................................. 11 發(fā)送端流程 .................................................................................................................. 11 接收端流程 .................................................................................................................. 12 5 硬件電路 ...............................................................................................................