發(fā)布時間：2018-03-13 09:07

  本文選題：電化學(xué)氣體傳感器　切入點：氣體檢測儀　出處：《西安工業(yè)大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著人們生活水平的提高以及科技的進步,大氣中的有毒氣體也越來越多,我國要實施可持續(xù)發(fā)展道路的戰(zhàn)略思想,其中最關(guān)鍵的一步是必須減少空氣污染,就必須加大對環(huán)境大氣監(jiān)測的力度。本課題根據(jù)實際的需求,設(shè)計了一款基于ADuC7060的多功能手持式氣體檢測儀。對5種氣體(氧氣、一氧化碳、一氧化氮、二氧化氮、二氧化硫)的濃度和溫度進行實時檢測和監(jiān)控報警。本課題所用的傳感器是5種不同的電化學(xué)氣體傳感器,所設(shè)計的檢測儀能通過該傳感器對相應(yīng)的5種氣體進行含量的檢測,把相應(yīng)的濃度值實時在LCD液晶顯示屏上顯示出來。當(dāng)所檢測到的氣體濃度值達到所設(shè)定的值時,產(chǎn)生聲光報警。為了提供給用戶一個良好的視圖和良好的人機交互界面,系統(tǒng)硬件電路還包括有鍵盤電路、還有從電化學(xué)傳感器所接收的信號的信號調(diào)理電路、聲光報警電路、供電電路、數(shù)據(jù)存儲電路等等。檢測儀的控制芯片采用ADI公司生產(chǎn)的ADuC7060芯片為其核心,把經(jīng)A/D轉(zhuǎn)換后的數(shù)據(jù)進行處理操作。為了方便管理和操作,還設(shè)計了數(shù)據(jù)存儲電路,把檢測到的數(shù)據(jù)經(jīng)ADuC7060處理后存儲在相應(yīng)的內(nèi)存單元里。在整個系統(tǒng)中,以嵌入式開發(fā)系統(tǒng)為平臺,在Keil4的開發(fā)環(huán)境下,完成程序的裝載,軟件采用模塊化的思想進行編寫,充分考慮系統(tǒng)的性能,對實現(xiàn)低功耗的方案進行討論分析。最后給出系統(tǒng)軟硬件的具體設(shè)計方案和框圖。最后給出系統(tǒng)詳細的軟硬件調(diào)試方法,本次所設(shè)計的檢測儀系統(tǒng)在實驗室已調(diào)試完成,實驗效果符合預(yù)期所要求的精度,并且系統(tǒng)的抗干擾能力強、性能穩(wěn)定。在論文的結(jié)尾給出系統(tǒng)設(shè)計的不足之處和展望以及仍需改進的幾個方面。
[Abstract]:With the improvement of people's living standard and the progress of science and technology, there are more and more toxic gases in the atmosphere. In order to implement the strategic idea of sustainable development, one of the most crucial steps is to reduce air pollution. According to the actual demand, we designed a multi-function hand-held gas detector based on ADuC7060. For five gases (oxygen, carbon monoxide, nitric oxide, nitrogen dioxide), The sensor used in this paper is five kinds of electrochemical gas sensors, through which the content of the corresponding five gases can be detected by the sensor. The corresponding concentration value is displayed on the LCD LCD in real time. When the detected gas concentration value reaches the set value, acousto-optic alarm is generated. In order to provide the user with a good view and a good human-computer interface, The hardware circuit of the system also includes keyboard circuit, signal conditioning circuit for signals received from electrochemical sensors, acousto-optic alarm circuit, power supply circuit, Data storage circuits and so on. The control chip of the tester uses ADuC7060 chip produced by ADI company as its core, and processes and operates the data after A- / D conversion. In order to facilitate management and operation, the data storage circuit is also designed. The detected data is processed by ADuC7060 and stored in the corresponding memory unit. In the whole system, the embedded development system is taken as the platform, the program is loaded in the Keil4 development environment, and the software is programmed with the idea of modularization. Considering the performance of the system, this paper discusses and analyzes the scheme of realizing low power consumption. Finally, the detailed design scheme and block diagram of the system software and hardware are given. Finally, the detailed debugging method of software and hardware of the system is given. The system has been debugged in the laboratory, and the experimental results are in line with the expected accuracy, and the anti-interference ability of the system is strong. At the end of the paper, the shortcomings and prospects of the system design and several aspects that need to be improved are given.
【學(xué)位授予單位】：西安工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X851

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本文編號：1605711