本文選題：嵌入式系統(tǒng) + ARM�。� 參考：《北方工業(yè)大學(xué)》2015年碩士論文

【摘要】：隨著國民經(jīng)濟(jì)迅猛發(fā)展,人民生活需求逐步提高,對鋁的需求也與日俱增,鋁量的生產(chǎn)屢創(chuàng)新高�，F(xiàn)代電解鋁工業(yè)主要采用預(yù)配槽煉鋁的方法,這種煉鋁工藝對電能的要求很大,在對電解槽進(jìn)行加熱的過程中電能很大一部分轉(zhuǎn)化為熱能。然而在這種工藝要求電解液維持在一個較高的溫度范圍內(nèi),在這個溫度環(huán)境下,提煉出鋁晶體。如果能夠適當(dāng)?shù)慕档筒⑶铱s小這個溫度范圍,使電解液在一個合適的溫度環(huán)境的進(jìn)行結(jié)晶,對于大型電解鋁廠將會大大降低電能的消耗,對于可持續(xù)發(fā)展有重大的意義。 本課的主要目的是設(shè)計(jì)一款基于ARM的初晶溫度檢測的系統(tǒng),系統(tǒng)以Linux為嵌入式操作系統(tǒng),以ARM7系列Cortex-A8型號作為主處理器。通過前端熱偶測溫槍對電解槽中電解液溫度進(jìn)行測量,將溫度信號轉(zhuǎn)換為電壓信號,由于所產(chǎn)生的電壓信號較小,需要進(jìn)一步對電壓信號進(jìn)行調(diào)理,包括對傳輸?shù)碾妷盒盘栠M(jìn)行放大,濾波。在經(jīng)過A/D轉(zhuǎn)換器ADS8345將熱偶測溫槍所提取的電信轉(zhuǎn)換為數(shù)字信號,在經(jīng)過一系列處理后將所得到的數(shù)字?jǐn)?shù)據(jù)輸入到ARM Cortex-A8核心板中進(jìn)行存儲,進(jìn)而可以將信號通過線性的方式在電腦或者LCD屏上進(jìn)行顯示,這樣更容易發(fā)現(xiàn)初晶溫度點(diǎn)。其中整個過程中每一次對溫度提取用時10毫秒,這樣能夠充分的達(dá)到工業(yè)上電解鋁的要求,而且能夠?qū)㈦娊獠壑须娊赓|(zhì)的溫度即時的顯示出來,同時所設(shè)計(jì)的Linux操作系統(tǒng)簡單,方便工人使用,對工業(yè)制鋁會產(chǎn)生巨大的影響。 本文重點(diǎn)是嵌入式電路板的設(shè)計(jì),主要完成的工作有： (1)介紹初晶溫度處理的整體方案,分析嵌入式處理的基本原理。 (2)在溫度采集過程采用的測溫槍,介紹測溫槍的熱偶原理以及對信號的處理過濾電路。 (3)對溫度信號轉(zhuǎn)換為電信號的A/D轉(zhuǎn)換處理,其中包括A/D轉(zhuǎn)換ADS8345介紹,以及信號處理電路包括放大電路與濾波電路。 (4)ARM核心板設(shè)計(jì),介紹Cortex-A8核心板的接口電路設(shè)計(jì),同時包括USB外擴(kuò),LCD,無線接口設(shè)計(jì)等。 (5)通過測試程序以及現(xiàn)場測試實(shí)驗(yàn)驗(yàn)證的電路板的穩(wěn)定性與準(zhǔn)確性。
[Abstract]:With the rapid development of national economy, people's life demand gradually increased, the demand for aluminum aluminum production also grow with each passing day, and highs. Modern aluminum industry mainly uses the method of pre groove aluminum, the aluminum smelting process of large power requirements, in the process of heating the electrolytic tank in large power a part is converted to heat. However, in this process the electrolyte maintained at a higher temperature range, the temperature in the environment, refined aluminum crystal. If properly reduced and the narrow temperature range, the electrolyte in a suitable temperature for crystallization, for large aluminum electrolytic plant will be greatly reduced the electric energy consumption, is of great significance for sustainable development.
The main purpose of this course is to design a system based on the liquidus temperature detection of the ARM embedded operating system based on Linux, using ARM7 series Cortex-A8 model as the main processor. To measure the temperature of the electrolyte in the electrolytic tank through the front end of thermocouple gun, the temperature signal into a voltage signal, the voltage signal is small the need to further the voltage signal conditioning, including amplifier, voltage signal of transmission filter. After extraction conversion Telecom A/D converter ADS8345 will thermocouple gun into digital signal and digital data through a series of processing the input to the ARM Cortex-A8 core board for storage. Then will the signal through the linear way were displayed on the computer screen or LCD, it is easier to find the liquidus temperature. The whole process every time on the extraction temperature It takes 10 milliseconds, so that it can fully meet the requirements of electrolytic aluminum in industry, and it can instantly display the temperature of electrolytes in the electrolyzer. At the same time, the designed Linux operation system is simple and convenient for workers to use, which will have a huge impact on industrial aluminum.
This paper focuses on the design of the embedded circuit board, and the main tasks are as follows:
(1) the overall scheme of the initial crystal temperature treatment is introduced, and the basic principle of the embedded processing is analyzed.
(2) a temperature measuring gun used in the process of temperature collection is used to introduce the thermocouple principle of the temperature measuring gun and the filtering circuit for processing the signal.
(3) the conversion of the temperature signal to the A/D conversion of the electrical signal, including the introduction of the A/D conversion ADS8345, and the signal processing circuit including the amplifying circuit and the filter circuit.
(4) ARM core board design, introduces the interface circuit design of Cortex-A8 core board, including USB external expansion, LCD, wireless interface design and so on.
(5) the stability and accuracy of the circuit board verified by the test program and the field test experiment.

【學(xué)位授予單位】：北方工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TQ133.1;TP274

【共引文獻(xiàn)】

相關(guān)博士學(xué)位論文 前2條

1 陳湘濤;數(shù)據(jù)倉庫與數(shù)據(jù)挖掘技術(shù)在新型鋁電解控制系統(tǒng)中的應(yīng)用研究[D];中南大學(xué);2004年

2 袁艷;先進(jìn)控制理論在復(fù)雜工業(yè)控制系統(tǒng)中的應(yīng)用研究[D];中南大學(xué);2006年

相關(guān)碩士學(xué)位論文 前10條

1 高鋼;基于神經(jīng)網(wǎng)絡(luò)的電解鋁過程溫度與分子比的預(yù)測研究[D];北方工業(yè)大學(xué);2011年

2 李業(yè);初晶溫度檢測系統(tǒng)數(shù)據(jù)交換的研究與實(shí)現(xiàn)[D];北方工業(yè)大學(xué);2011年

3 趙法福;初晶溫度檢測系統(tǒng)數(shù)據(jù)采集和存儲的研究和開發(fā)[D];北方工業(yè)大學(xué);2011年

4 劉輝;便攜式智能軌道檢測系統(tǒng)的研究與設(shè)計(jì)[D];中南大學(xué);2011年

5 姚明星;預(yù)焙鋁電解槽電解溫度預(yù)測模型的研究[D];中南大學(xué);2011年

6 李乃海;試驗(yàn)臺數(shù)據(jù)采集與控制系統(tǒng)設(shè)計(jì)[D];哈爾濱工業(yè)大學(xué);2011年

7 郭天宇;生物傳感信號的可配置LXI儀器模塊關(guān)鍵技術(shù)研究[D];北京化工大學(xué);2011年

8 戴麗莉;基于ARM的嵌入式USB主機(jī)系統(tǒng)的研究[D];哈爾濱理工大學(xué);2011年

9 王賡;小口徑輸油管道內(nèi)檢測技術(shù)研究[D];沈陽工業(yè)大學(xué);2012年

10 張洋;被動紅外光譜儀中微弱信號檢測技術(shù)的研究[D];中北大學(xué);2012年

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本文編號：1731273