msp430運(yùn)放特性檢測畢業(yè)設(shè)計(jì)篇一：畢業(yè)設(shè)計(jì)：基于MSP430的溫濕度檢測系統(tǒng)設(shè)計(jì)

摘要

本次設(shè)計(jì)內(nèi)容為基于MSP430單片機(jī)的溫濕度檢測系統(tǒng)。溫度和濕度是藥

房、糧倉、溫室大棚等場所的重要的環(huán)境因子，本文提出了一種基于MSP430F149單片機(jī)的溫濕度檢測系統(tǒng)設(shè)計(jì)，該系統(tǒng)設(shè)計(jì)方案具有測量準(zhǔn)確、調(diào)試方便、可實(shí)時(shí)記錄信息等特點(diǎn)，并可廣泛應(yīng)用于條件惡劣、人員不便進(jìn)入的場合。

本次設(shè)計(jì)以MSP430F149單片機(jī)為基礎(chǔ)，在分析其工作原理及相應(yīng)管腳作

用的基礎(chǔ)上，結(jié)合我國現(xiàn)有氣候的特點(diǎn)，進(jìn)行溫度、濕度參數(shù)的檢測系統(tǒng)設(shè)計(jì)，完成了溫濕度檢測系統(tǒng)的方案，包括溫度檢測系統(tǒng)、濕度檢測系統(tǒng)，使檢測所得的數(shù)據(jù)量達(dá)到生產(chǎn)等環(huán)節(jié)過程中的精確要求。溫濕度檢測系統(tǒng)的控制方案共有5個(gè)主要部分；其中包括溫度檢測系統(tǒng)、濕度檢測系統(tǒng)、顯示電路、電源電路。本次設(shè)計(jì)對溫濕度檢測系統(tǒng)組態(tài)采用美國德州儀器開發(fā)的MSP430單片機(jī)，并在設(shè)計(jì)內(nèi)容里詳細(xì)介紹了MSP430單片機(jī)的相應(yīng)優(yōu)勢及工作原理。

此次設(shè)計(jì)共分5章內(nèi)容，主要包括溫濕度檢測系統(tǒng)簡介、基本硬件介紹、

硬件電路設(shè)計(jì)、軟件程序設(shè)計(jì)等內(nèi)容，全方位解析溫濕度檢測系統(tǒng)及其相應(yīng)顯示的方案，根據(jù)精度對生產(chǎn)等環(huán)節(jié)的要求進(jìn)行各

種精度的確定，包括傳感器及運(yùn)算電路，以實(shí)現(xiàn)系統(tǒng)最優(yōu)且安全可靠。

關(guān)鍵詞：MSP430F149單片機(jī)；溫度檢測；濕度檢測

I

Abstract

ThecontentofthisdesignisthehumidityandtemperaturemonitoringsystembasedonMSP430Single-ChipMicroxxputer.Temperatureandhumidityaretwoimportantenvironmentalfactorsinsomeplaceslikepharmacies,granariesandgreenhouses.ThedesignforthehumidityandtemperaturemonitoringsystembasedontheMSP430F149Single-ChipMicroxxputerispresentedinthisthesis.Thedesignofthesystemischaracterizedbyaccuracyinmensuration,convenienceindebuggingandrealtimeinformation-recordingandalsowidelyusedintheplaceswhicharetooharshforpeopletoenter.

ThedesigngroundedontheMSP430F149Single-ChipMicroxxputer,consideringexsitingclimatecharacteristicsinourcountry,isplannedindetectingsystemaboutparametersofhumidityandtemperatureonthepremisethathasanalyzingtheworkingprincipleandpinfunction.Thedesignhasxxpletedtheschemesofhumidityandtemperaturemonitoringsystem,includingtemperaturedetectingsystemandhumiditydetectingsystem,tomakesurethedatasizeofthedetectioncanmeetthepreciserequestinproductionandotherlinks.Therearefivemajorpartsintheschemeofhumidityandtemperaturemonitoringsystem,xxprisingtemperaturedetectingsystem,humiditydetectingsystem,displaycircuitandpowercircuit.ThedesignadoptstheMSP430Single-ChipMicroxxputerconfigurationbyTexasU.SintheconfigurationofhumidityandtemperaturemonitoringsystemandtheadvantagesandtheworkingprincipleofMSP430areintroducedinthedesignindetail.

Thedesignconsistsoffivechapters,includingintroductionoftemperatureandhumiditydetectionsystem,thebasichardware,thehardwarecircuitdesign,softwareprogramming,whichanalyzesthehumidityandtemperaturemonitoringsystemandshownschemesrelated.Italsodeterminestheaccuracyconsideringtheimportanceofexactnessinproduction,includingthesensorandarithmeticcircuit,toachieveoptimizationandreliablenessofthesystem.

Keywords:MSP430F149;temperaturedetection;humiditydetection

II

目錄

第1章引言.................................................................................................................1

1.1課題的目的和意義..........................................................................................1

1.2國內(nèi)、外現(xiàn)狀及發(fā)展趨勢..............................................................................2

1.2.1國內(nèi)現(xiàn)狀及發(fā)展趨勢............................................................................2

1.2.2國外現(xiàn)狀及發(fā)展趨勢............................................................................2

第2章溫濕度檢測系統(tǒng)簡介.....................................................................................3

2.1溫度測量部分.................................................................................................3

2.2濕度測量部分.................................................................................................3

2.3顯示部分.........................................................................................................3

2.4電源部分.........................................................................................................3

第3章基本硬件介紹.................................................................................................4

3.1MSP430單片機(jī)...............................................................................................4

3.1.1處理能力強(qiáng)............................................................................................4

3.1.2運(yùn)算速度快............................................................................................4

3.1.3超低功耗................................................................................................4

3.1.4方便高效的開發(fā)環(huán)境............................................................................5

3.1.5MSP430F149系列.................................................................................5

3.1.6MSP430F149各管腳.............................................................................5

3.2DS18B20溫度傳感器.....................................................................................8

3.2.14個(gè)主要的數(shù)據(jù)部件.............................................................................9

3.2.2技術(shù)性能描述.....................................................................................11

3.2.3應(yīng)用范圍..............................................................................................12

3.2.4DS18B20工作原理.............................................................................12

3.2.5DS18B20引腳定義.............................................................................13

3.3HM1500濕度傳感器..............................................................................13

3.3.1HM1500內(nèi)部結(jié)構(gòu)...............................................................................13

3.3.2額定參數(shù).............................................................................................13

3.3.3特性.....................................................................................................13

3.3.4環(huán)境適應(yīng)性.........................................................................................14

3.3.5HM1500濕度測量...............................................................................14

3.3.6HM1500模擬線性電壓輸出...............................................................14

第4章硬件電路的設(shè)計(jì)...........................................................................................16

4.1基礎(chǔ)電路設(shè)計(jì)電路設(shè)計(jì)...............................................................................16

4.2重要模塊電路的設(shè)計(jì)...................................................................................16

4.2.1溫度檢測電路的設(shè)計(jì).........................................................................16

4.2.2濕度測量電路的設(shè)計(jì).........................................................................18

III

4.2.3電源轉(zhuǎn)換電路的設(shè)計(jì).........................................................................19

4.2.4顯示電路的設(shè)計(jì).................................................................................20

第5章軟件程序設(shè)計(jì)...............................................................................................23

5.1軟件開發(fā)環(huán)境IARFORMSP430................................................................23

5.2程序設(shè)計(jì)整體方案.......................................................................................23

5.3溫度測量程序...............................................................................................25

5.3.1DS18B20溫度傳感器的驅(qū)動(dòng).............................................................25

5.3.2溫度的測量與顯示程序.....................................................................25

5.4濕度測量程序...............................................................................................25

第6章結(jié)論...............................................................................................................27

參考文獻(xiàn)...............................................................................................................28

致謝.....................................................................................................................29

附錄.....................................................................................................................30

附圖.....................................................................................................................46

IV

第1章引言

1.1課題的目的和意義

這次畢業(yè)設(shè)計(jì)選題的目的主要是讓生活在信息時(shí)代的我們，將所學(xué)知識(shí)應(yīng)用于生產(chǎn)生活當(dāng)中，掌握溫、濕度測量系統(tǒng)設(shè)計(jì)的流程，方案的論證，選擇，實(shí)施與完善。通過對溫、濕度測量系統(tǒng)的設(shè)計(jì)、制作、了解信息采集測試、控制的全過程，提高在電子工程設(shè)計(jì)和實(shí)際操作方面的綜合能力，初步培養(yǎng)在完成項(xiàng)目過程中所應(yīng)具備的基本素質(zhì)和要求。培養(yǎng)研發(fā)能力，通過對電子電路的設(shè)計(jì)，初步掌握在給定條件和要求的情況下，如何巧妙合理地去設(shè)計(jì)系統(tǒng)中的各部分電路，并將它們有序的連接起來。提高查閱資料、語言表達(dá)能力和理論聯(lián)系實(shí)際的技能。

溫、濕度是工業(yè)對象中主要的被控參數(shù)之一，當(dāng)今社會(huì)溫、濕度的測量與測量系統(tǒng)在生產(chǎn)與生活的各個(gè)領(lǐng)域中扮演著越來越重要的角色，大到工業(yè)冶金、環(huán)境檢測、紡織廠、冷凍庫、糧倉、醫(yī)療衛(wèi)生等方面，小到浴霸、家庭冰箱、空調(diào)、電飯煲等方面都得到了廣泛的應(yīng)用。例如冶金、機(jī)械、食品、化工各類工業(yè)中，廣泛使用的各種加熱爐、熱處理爐、反應(yīng)爐等，對工件的處理溫、濕度都要求嚴(yán)格控制，而單片機(jī)溫、濕度測量系統(tǒng)使溫、濕度測量指標(biāo)得到了大幅度提高。其使用量日益增多，其地位和作用也倍顯重要。溫、濕度測量系統(tǒng)的廣泛應(yīng)用使得這方面的研究意義頗為必要。溫、濕度測量系統(tǒng)的結(jié)構(gòu)組成，測量原理使用維護(hù)等方面的基礎(chǔ)內(nèi)容已成為電子工程技術(shù)人員急需了解掌握的必要知識(shí)。

MSP430系列單片機(jī)是美國德州儀器公司推出的16位超低功耗、高性能產(chǎn)品，它具有處理能力強(qiáng)、運(yùn)行速度快、資源豐富、開發(fā)方便等優(yōu)點(diǎn)，有很高的性價(jià)比，在世界各國已得到廣泛的應(yīng)用，在國內(nèi)，也已經(jīng)進(jìn)人飛速發(fā)展階段，MSP430系列超低功耗16位單片機(jī)，越來越受到電子工程師親睞，并得到廣泛應(yīng)用。MSP430微控制器Single-ChipMicroxxputerOccurringofpulse:canoccurfourpulsewhichperiodandamountscanbe

amended.

Measuringofpulse:canmeasurethepulse’speriodandamounts.

Logicoscillograph:candisplaythesignalinthePCscreen.

Occurringofanalogvoltage:canoccurthevoltagewhosevalueisfrom0V

to3V.

ThedesignoftheMultipurposeMeasuringsystemisxxposedoftwoparts:

thehardwaredesignand;thesoftwaredesign.Inthispaperthehardwareandthe

softwaredesignismainlydiscussed.

Keywords:Occurringofpulse;Measuringofpulse;MSP430MCU

目錄

引言????????????????????????????????5

第1章概述????????????????????????????6

1.1智能儀器的發(fā)展概況??????????????????????6

1.2智能儀器發(fā)展趨勢??????????????????????????6

1.3智能儀器的工作原理??????????????????????????7

1.4課題背景??????????????????????????7

第2章MSP430F169多功能測試儀的硬件設(shè)計(jì)?????????????8

2.1系統(tǒng)的總體實(shí)現(xiàn)方案??????????????????????8

2.2單片機(jī)系統(tǒng)性能特點(diǎn)??????????????????????9

2.2.1單片機(jī)的選擇??????????????????????9

2.2.2MSP430的主要性能與特點(diǎn)?????????????????9

2.3脈沖發(fā)生電路???????????????????????11

2.4脈沖測量電路???????????????????????12

2.5串口通訊電路?????????????????????????13

2.5.1電平轉(zhuǎn)換??????????????????????????14

2.5.2串口通訊介紹????????????????????????14

2.5.3通訊設(shè)計(jì)?????????????????????????14

2.6LCD點(diǎn)陣顯示電路????????????????????????15

2.6.1LCD點(diǎn)陣LSD12864BSBO特性??????????????????15

2.6.2電路原理???????????????????????????15

第3章MSP430F169多功能測試儀的軟件設(shè)計(jì)?????????????17

3.1主程序設(shè)計(jì)??????????????????????????17

3.2按鍵中斷程序設(shè)計(jì)???????????????????????18

3.3脈沖輸出程序設(shè)計(jì)???????????????????????19

3.4脈沖測量程序設(shè)計(jì)????????????????????????20

3.5ADC采樣程序設(shè)計(jì)????????????????????????21

3.60--3V電壓直流電壓輸出程序設(shè)計(jì)??????????????????22

3.7LCD顯示程序設(shè)計(jì)采樣程序設(shè)計(jì)??????????????????23

第4章抗干擾的處理????????????????????????24

4.1干擾的形成原因及后果??????????