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1、隨著工農(nóng)業(yè)牛產(chǎn)對溫濕度的要求越來越高,準(zhǔn)確測量溫度變得至關(guān)重要。木文設(shè)計主要是針對惡劣環(huán)境下的工業(yè)現(xiàn)場以及高科技大范圍的農(nóng)業(yè)現(xiàn)場,布線困難,浪費資源,占用空間,可操作性差等問題做岀的一個解決方案。該方案主要是利用熱電偶采集外界的溫度,利用無線傳輸實現(xiàn)在上位機顯示采集到的溫度,并對數(shù)據(jù)進行相應(yīng)的對比和處理。本文主要利用兩路熱電偶采集溫度的模擬量,并且利用熱電偶吊行模數(shù)轉(zhuǎn)換器實現(xiàn)信號放大、冷端補償和A/D轉(zhuǎn)換,再由單片機進行處理,并通過無線傳輸模塊將測量的數(shù)值傳輸給PC機,在PC機上實現(xiàn)數(shù)據(jù)的對比,從而可以對工業(yè)現(xiàn)場和農(nóng)業(yè)現(xiàn)場的環(huán)境溫度進行實
2、時監(jiān)測,并且利用該設(shè)計還可以實現(xiàn)對熱電偶測量準(zhǔn)確度的現(xiàn)場檢測。本設(shè)計結(jié)構(gòu)簡單,但應(yīng)用范圍廣泛,使用方便,而且節(jié)約資源,同時可以進行遠距離的監(jiān)控。關(guān)鍵詞:溫度數(shù)據(jù)采集,無線傳輸,熱電偶,單片機,PC機AbstractWiththemoreandmorerequestofindustryandagricultureproductioninthetemperature,itbecomeveryimportanttosurveythetemperatureaccurately?Thisarticleisdesignedforharshenviro
3、nmentsandhigh-techindustriesatthesceneoflarge-scaleagricultureatthescene,wiringproblems,wasteofresources,space,andmakeoperationalapoorsolution.Thisdesignismainlytousethethermocoupletogathertemperature,andthenusethewirelesstransmissiontorevealthegatheredtemperatureonthepos
4、itionmachine,andcomparisonofdataandprocessingthecorresponding?ThisdesignmainlyusestwothermocoupletogathertheanalogquantityofthetemperatureandusesthethermocoupleserialADCtoachievesignalamplification,coldjunctioncompensationandtheA/Dconversion,andthenthedigitalquantitywillb
5、eabletobedistinguishedbythemicrochipandthentransmittedthroughthewirelesstransmissionmoduletothePC,andtoachievethecompareofdata,thenthetemperatureofthesceneofindustrialandagriculturalcanbemonitoredinanytime,andthroughthisdesignwecandetecttheaccuracyofthermocoupleatthescene
6、ofmeasurements?Thissystemisofsimplestructure,butinextensiveapplicationrange,easybeingused.Moreover,itsavesresourcesandalso,thelongrangemonitormaybecarriedonatthesametime?Keywords:temperaturedataacquisition,wirelesstransmission,thermocouple,single-chip,PC摘要IAbstractII目錄III
7、第一章引言11.1課題的背景和意義11.2無線溫度采集原理21.3無線溫度采集的發(fā)展?fàn)顩r41.4無線溫度采集系統(tǒng)的研究內(nèi)容6第二章總體方案設(shè)計72.1任務(wù)要求72.2總體方案的論證72.3總體方案的選擇10第三章單元電路的設(shè)計123.1溫度傳感器信號調(diào)理電路123.1.1熱電偶123.1.2溫度數(shù)據(jù)采集部分的放大電路183.1.3自動檢測部分的信號放大器213.2無線收發(fā)模塊263.2.1無線收發(fā)芯片的選擇263.2.2PTR8000無線數(shù)據(jù)傳輸模塊283.2.4PTR8000的工作過程313.3單片機與PC機接口數(shù)據(jù)傳輸電路323>4"
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