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| 折扣與優(yōu)惠：團(tuán)購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要:隨著“信息時代”的到來，傳感器技術(shù)得到了顯著的進(jìn)步，其應(yīng)用領(lǐng)域越來越廣泛，對其要求越來越高，需求越來越迫切，它在各個領(lǐng)域都有著舉足輕重的作用。本文是針對現(xiàn)實(shí)生活的需要，設(shè)計(jì)出一個多傳感器檢測平臺，采用模塊化的思想，以單片機(jī)STC12C5A60S2為核心，包含壓力、酒精、濕度、溫度傳感器，以12864液晶顯示屏作顯示，構(gòu)建成一個多功能的檢測平臺。 本系統(tǒng)利用STC12C5A60S2單片機(jī)為核心，配合單電源軌到軌運(yùn)放LMV324、阻抗型乙醇濃度傳感器、由惠斯登電橋構(gòu)成的壓力傳感器、高分子材料濕度傳感器，數(shù)字型溫度傳感器18B20、12864LCD顯示屏、蜂鳴器模塊組成一個多傳感器平臺，蜂鳴器模塊負(fù)責(zé)乙醇濃度上限報(bào)警。硬件電路設(shè)計(jì)使用Altium.Designer.2009。軟件方面采用C語言編程，使用Keil C51集成開發(fā)環(huán)境。 通過測試后可知，采用該平臺可以有效的測量出具有一定精度的數(shù)據(jù)。而且，該平臺簡化了電源模塊，精簡了電路設(shè)計(jì)，節(jié)省了成本。另外設(shè)計(jì)中同時采用了多種數(shù)據(jù)采集處理與電路設(shè)計(jì)方法，使得其可以在日后擴(kuò)展使用其它傳感器，適應(yīng)不同場合需要。 關(guān)鍵詞: 傳感器；STC12C5A60S2；單電源；運(yùn)放
Abstract:With the arrival of "information times", the sensor technology has got remarkable progress, its application field is more and more extensive and its requirement is more and more high .It plays an important role in various fields.This article is based on the real life needs, using the idea of modular and the core of STC12C5A60S2 single-chip, including pressure, alcohol, humidity, temperature sensor, with12864 LCD display to construct a multifunctional detecting platform. The system uses the STC12C5A60S2 chip as the core,with the single supply rail-to-rail operational amplifier LMV324, impedance type ethanol concentration sensor, the pressure sensors exerted by the Wheatstone bridge , polymer humidity sensors, temperature digital sensor18B20,12864LCD display, a buzzer module consists of a sensor platform, a buzzer module responsible for ethanol concentration limit alarm. Hardware circuit design of Altium.Designer.2009. Software using C language programming, the use of Keil C51 integrated development environment. Through the test result, the platform can measure with certain accuracy data effectively. Moreover, the platform simplifies the power module, simplify the circuit design, saves the cost. The other , the design is by the method of using a variety of data collection and processing so that it can be used in the future extension of the other sensor, adapted to the needs of different occasions. Key words：Sensor；STC12C5A60S2；Single Power; Operational Amplifier
傳感器是一種把非電量轉(zhuǎn)變的電信號的器件，而檢測設(shè)備一般是包括傳感器、檢測點(diǎn)取樣設(shè)備及放大器(進(jìn)行抗干擾處理及信號傳輸)，當(dāng)然還有電源及現(xiàn)場顯示部分，電信號一般分連續(xù)量、離散量兩種。數(shù)字化過程中，檢測設(shè)備變化比較大，經(jīng)過幾個階段，近來多采用ASIC專用集成電路，而且把傳感器和微處理器及網(wǎng)絡(luò)接口封裝在一個器件中，完成信息獲取、處理、傳輸、存貯等功能。在自動化儀表中經(jīng)常把檢測儀稱為變送器，如溫度變送器、壓力變送器等。 因?yàn)閭鞲衅饔糜诟餍懈鳂I(yè)，加之這些年來，家用電器、汽車、信息產(chǎn)業(yè)三方面的飛速發(fā)展，對傳感器需求大增，所以研究一個多傳感器，可測量多種數(shù)據(jù)，并可在此基礎(chǔ)上可作擴(kuò)展的多傳感器平臺顯得很有意義。同時作為畢業(yè)設(shè)計(jì)選題，也切合本專業(yè)學(xué)習(xí)要求。
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