【正文】 信息工程學(xué)院本科畢業(yè)論文 題 目 基于 Si4432 的溫濕度采集電路設(shè)計(jì)與實(shí)現(xiàn) 誠 信 承 諾 我謹(jǐn)在此承諾：本人所寫的畢業(yè)論文《 高靈敏度授時(shí)信號接收系統(tǒng) 》均系本人獨(dú)立完成，沒有抄襲行為，凡涉及其他作者的觀點(diǎn)和材料，均作了注釋，若有不實(shí)，后果由本人承擔(dān)。 承諾人（簽名）： 年 月 日 杭州電子科技大學(xué)本科畢業(yè)設(shè)計(jì) 摘 要 溫濕度的自動(dòng)測量和顯示記錄是工廠的一項(xiàng)常規(guī)監(jiān)測項(xiàng)目。以往的人工采集數(shù)據(jù)占用人力資源，可靠性低，容易發(fā)生差錯(cuò)已經(jīng)不適應(yīng)工業(yè)化生產(chǎn)的要求了。一般的溫濕度采集系統(tǒng)數(shù)據(jù)顯示單調(diào)，缺乏支持各種 PLC的通訊端口，而且溫濕度采集模塊布線繁瑣且受原有車間布局的約束。 本文采用目前應(yīng)用廣泛的 ARM系列微處理器 ATMEGA48作為平臺(tái)的核心構(gòu)建系統(tǒng)。 發(fā)射板： 溫濕度采集器以 ATMEGA88作為主控制芯片，采用數(shù)字溫濕度傳感器芯片 SHTl0采集外界溫濕度值。然后通過無線射頻收發(fā)器 SI4432將數(shù)據(jù)發(fā)送到 發(fā)射板 。 接收板：以 ATMEGA88作為主控制芯片使無線射頻收發(fā)器 SI4432所接收到的溫濕度 的 數(shù)據(jù)顯示在 LCD1602顯示屏上， 省去了冗長且鋪設(shè)不便的通訊電纜。 本項(xiàng)目的硬件設(shè)計(jì)任務(wù)包括：設(shè)計(jì)目標(biāo)，主機(jī)以及溫濕度采集模塊的器件選型以及原理圖設(shè)計(jì)， PCB板的設(shè)計(jì)指示，測試以及調(diào)試。 關(guān)鍵詞 ： ATMEGA48； SHT10； SI4432； LCD1602 杭州電子科技大學(xué)本科畢業(yè)設(shè)計(jì) ABSTRACT The automaticmeasure and the records display of temperature and humidity is one of the conventional monitoring projects in the factory. In the past, people collected data themselves. In this way, it needed much human resource with low reliability. Of course error is easy to happen. So this way was not fit to the requirements of industrial production. General temperature and humidity collection system display data monotonous and short of history data. Many of these systems also don?t support the munication with most of PLC. Furthermore, temperature and humidity collection module is difficult to layout as too many lines． It is restricted by the placement of plant also． This paper utilizes ARM microprocessor?ATMEGA48?as the core ofthe platform to buildup system, which is applied widely at board: temperature and humidity logger ATMEGA88 as the main control chip, digital temperature and humidity the sensor chip SHTl0 acquisition outside temperature and humidity valued. Then through the radio frequency transceiver SI4432 data will be sent to launch plate. Receiving plate: ATMEGA88 the wireless RF transceiver as the primary control chip SI4432 received by the temperature and humidity data LCD1602 display, eliminating the a lengthy and laying inconvenience munication cable. The hardware design tasks of the project include: design goals, the host, as well as temperature and humidity acquisition module device selection and schematic design, PCB board design instructions, testing, and debugging. Key words： ATMEGA48； SHT10； SI4432； LCD1602杭州電子科技大學(xué)本科畢業(yè)設(shè)計(jì) 目 錄 1 引言 ............................................................................................................................... 1 2 概述 ............................................................................................................................... 2 無線溫濕度采集概述 ......................................................................................... 2 本設(shè)計(jì)方案思路 ................................................................................................. 4 研發(fā)方向和技術(shù)關(guān)鍵 ......................................................................................... 4 3 總體設(shè)計(jì) ........................................................................................................................ 7 電源模塊 .............................................................................................................. 7 微控制器系統(tǒng) ...................................................................................................... 8 無線溫濕度檢測系統(tǒng) .......................................................................................... 8 4 硬件設(shè)計(jì) ...................................................................................................................... 10 電源轉(zhuǎn)換 ........................................................................................................... 10 微控制器系統(tǒng) ................................................................................................... 11 溫濕度采集模塊 ............................................................................................... 14 無線收發(fā)模塊 ................................................................................................... 18 5 軟件設(shè)計(jì) ........................................................................................................................ 21 總方案流程 ....................................................................................................... 21 程序流程圖 ....................................................................................................... 21 模塊說明 ........................................................................................................... 22 6 制作與調(diào)試 .................................................................................................................... 24 PCB 制作與程序編寫 ....................................................................................... 24 系統(tǒng)調(diào)試 ........................................................................................................... 25 其他 ................................................................................................................... 27 7 結(jié)束語 ............................................................................................................................ 28 致謝 .................................................................................................................................. 29 參考文獻(xiàn) ........................................................................................................................... 29 附錄一 .............................................................................................................................. 30 附錄二 .............................................................................................................................. 32 附錄三 .............................................................................................................................. 34 杭州電子科技大學(xué)本科畢業(yè)設(shè)計(jì) 1 1 引言 溫度和濕度與工農(nóng)業(yè)及人民的普通生活有著密切聯(lián)系。比如倉庫儲(chǔ)藏的食品，農(nóng)作物的生長 等都會(huì)受溫濕度變化的影響；工業(yè)中精密儀器，半導(dǎo)體器材都會(huì)