【正文】 為溫度 ， ?、 ? 為待定參數(shù)。系統(tǒng)采用集 A/D 轉(zhuǎn)換器為一體的 PCF8951 芯片，通過單片機(jī)處理進(jìn)行顯示。,利用 8位 AD轉(zhuǎn)換芯片對傳感器采集 的模擬信號數(shù)字化產(chǎn)生相對準(zhǔn)確的溫度和濕度數(shù)字?jǐn)?shù)據(jù) ,從而減少外部干擾有效的提高精度。 在環(huán)境控制系統(tǒng)中 ,環(huán)境中的溫濕度控制和紅外檢測對高精度環(huán)境下的做業(yè)、影響最為直接，因而實(shí)現(xiàn)環(huán)境中溫濕度的優(yōu)化控制和紅外檢測尤為重要，溫濕度的檢測和控制一直工業(yè)監(jiān)控中的重點(diǎn)。完成諸如升溫到特定溫度、降溫到特定溫度、在溫度上下限范圍內(nèi)保持恒溫等多種控制方式，在濕度控制和紅外控制方面也是如此。溫濕度控制對于單片機(jī)的應(yīng)用具有一定的實(shí)際意義，它代表了一類自動控制的方 法。 measurement。而本文就是針對這種缺陷而研究的一種系統(tǒng)，設(shè)計(jì)一種造價低廉、使用方便且測量 系統(tǒng)結(jié)構(gòu)簡單、實(shí)用，提高了測量精度和效率 。s Degree Design for STC 89C52based sensor control system Heilongjiang Institute of Technology 202006Harbi黑龍江工程學(xué)院本科生畢業(yè)設(shè)計(jì) I 摘 要 本設(shè)計(jì)實(shí)現(xiàn) 的是單片機(jī)溫濕度測量與紅外開關(guān)控制系統(tǒng) ,以 STC89C52單片機(jī)為控制核心 ， 采用集 A/D、 D/A 為一體的 PCF859151T 芯片進(jìn)行模數(shù)轉(zhuǎn)換， 通過數(shù)碼管顯示所測量的溫濕度，紅外傳感器采集的紅外信號用單片機(jī)檢測高低電平進(jìn)而控制 繼電器開關(guān)電路 。 關(guān)鍵詞： 單片機(jī)；傳感器；控制 ； 測量 ；系統(tǒng) 黑龍江工程學(xué)院本科生畢業(yè)設(shè)計(jì) II ABSTRACT The design and implementation of measurement and control temperature humidity and infrared is MCU system, STC89C52 microcontroller as control core, using set A/D and D/A for the integration of PCF859151T chips for frequencyfield, as measured by digital pipe display of temperature and humidity, infrared sensors to collect infrared signal detection height level and MCU control relay switching applications. Describe the hardware structure and principle, and analyzes the corresponding software design and main points, including software design process and procedure of implementation. The traditional temperature and humidity measurement method is to use humidity table, hair humidity table, dual metal type gauge and humidity dipstick test equipment, such as by artificial detection, the traditional switch circuit are artificially clicked switch implementation, this artificially method, the low efficiency, timeconsuming and testing temperature and humidity error is big, the randomness. This paper is aimed at the defects and research system, design a kind of low cost, use convenient and measurement system structure is simple, practical, and improve the measuring precision and efficiency. Key words: microcontroller。 system 黑龍江工程學(xué)院本科生畢業(yè)設(shè)計(jì) 目 錄 摘要 .................................................................................................................. I Abstract ........................................................................................................... II 第 1章 緒論 ................................................................................................... 1 課題研究的目的和意義 ............................................................................................ 1 課題現(xiàn)狀和發(fā)展趨勢 ................................................................................................ 1 主要內(nèi)容和研究方法 ................................................................................................ 2 第 2章 系統(tǒng)總體分析與硬件設(shè)計(jì) ................................................................ 4 系統(tǒng)功能及系統(tǒng)的組成和工作原理 ........................................................................ 4 技術(shù)指標(biāo)及設(shè)計(jì)方案 ...................................................................................... 4 硬件系統(tǒng)設(shè)計(jì) .................................................................................................. 4 主要組件簡介 ................................................................................................. 7 模塊的 設(shè)計(jì) .............................................................................................................. 14 溫度采集模塊 ............................................................................................... 14 濕度采集模塊 ............................................................................................... 15 紅外采集模塊 ............................................................................................... 17 單片機(jī)處理模塊 ........................................................................................... 18 本章小結(jié) .................................................................................................................. 18 第 3章 軟件系統(tǒng)設(shè)計(jì) ................................................................................... 19 軟件的仿真和編譯 .................................................................................................. 19 仿真軟件介紹 ............................................................................................... 19 軟件的編譯過程 ........................................................................................... 21 軟件的模塊化設(shè)計(jì) .................................................................................................. 21 采樣轉(zhuǎn)換與控制 ........................................................................................... 21 顯示結(jié)果 ....................................................................................................... 22 本章小結(jié) .................................................................................................................. 22 第 4章 硬件調(diào)試方案 ................................................................................... 23 硬件電路的調(diào)試 ...................................................................................................... 23 功能模塊的調(diào)試方案 ............................................................................................ 24 本章小結(jié) .................................................................................................................. 25 黑龍江工程學(xué)院本科生畢業(yè)設(shè)計(jì) 結(jié)論 ................................................................................................................ 26 參考文獻(xiàn) ........................................................................................................ 27 致謝 ................................................................................................................ 28 附錄 ................................................................................................................ 29 黑龍江工程學(xué)院本科生畢業(yè)設(shè)計(jì) 1 第 1章 緒 論 隨著社會經(jīng)濟(jì)的快速發(fā)展以及人們生活水平的日益提 高，人們希望日常生活不僅更便利而且更快捷。而且其