本文選題：有害氣體　切入點(diǎn)：STM32L　出處：《華南理工大學(xué)》2013年碩士論文

【摘要】：火災(zāi)是威脅公共安全，危害人們生命財(cái)產(chǎn)安全的最主要的災(zāi)害之一。我國已處于工業(yè)化發(fā)展中期，城市化水平已進(jìn)入快速發(fā)展階段，火災(zāi)損失也急速上升，平均12年翻一番。要減少火災(zāi)危害，必須在火災(zāi)發(fā)生早期發(fā)現(xiàn)并撲滅，甚至即將發(fā)生但還未發(fā)生的前期積極主動(dòng)采取措施防止其發(fā)生。對火災(zāi)自動(dòng)探測特別是提前預(yù)測是是預(yù)防火災(zāi)的關(guān)鍵。隨著城市建筑、工廠等結(jié)構(gòu)和功能越來越復(fù)雜，現(xiàn)有的火災(zāi)探測技術(shù)無法滿足這些新的火災(zāi)探測的需求。為此，在火災(zāi)監(jiān)測監(jiān)控技術(shù)層面上迫切需要研發(fā)滿足現(xiàn)代城市和工礦企業(yè)的需求的新的火災(zāi)監(jiān)控系統(tǒng)。這對于保障人民生命財(cái)產(chǎn)安全，構(gòu)建和諧社會具有重大的社會意義和經(jīng)濟(jì)效益。 本課題的主要思路是對有害氣體以及溫度進(jìn)行實(shí)時(shí)監(jiān)測，然后對信號進(jìn)行處理做出相應(yīng)的響應(yīng)動(dòng)作來預(yù)防火災(zāi)的發(fā)生。整個(gè)系統(tǒng)由手操器，變送器，智能傳感器部分組成。由于系統(tǒng)由多部分組成，所以通信方式成為重中之重。系統(tǒng)采用智能傳感器收集相應(yīng)的氣體、溫度信息，通過自定義的通信協(xié)議傳輸給其相對應(yīng)的變送器，變送器對信號進(jìn)行判斷做出相應(yīng)動(dòng)作。再通過Modbus與上位機(jī)進(jìn)行有效通信，也可以采用手操器對變送器進(jìn)行信號采集，功能設(shè)置。手操器對變送器采用Modbus與紅外通信相結(jié)合的方式進(jìn)行通信。 在具體的硬件方面，我們考慮到系統(tǒng)需要長期運(yùn)行并且在易燃易爆環(huán)境中使用。所以采用了ST公司出品的STM32L系列低功耗單片機(jī)，圍繞STM32L系列芯片我們設(shè)計(jì)了供電電路，觸碰按鍵，液晶顯示器，flash電路，，傳感器處理電路等電路。最后運(yùn)行整個(gè)系統(tǒng)，實(shí)現(xiàn)了整個(gè)系統(tǒng)的全部工作。
[Abstract]:Fire is one of the threats to public safety, endangering people's lives and property safety of the main disasters. China is in the middle of industrialization, city level has entered the stage of rapid development, the fire damage has rapidly increased, the average 12 years doubled. To reduce fire hazards, fire must be found early and even to be extinguished but early hasn't happened to take proactive measures to prevent its occurrence. The automatic fire detection especially is predicted in advance is the key to prevention of fire. With the development of city construction, plant structure and function more and more complex, the existing fire detection technology cannot meet the new requirements of fire detection. Therefore, in the aspect of fire monitoring monitoring technology research and development to meet the urgent need of modern city and industrial and mining enterprises demand new fire monitoring system. This is to protect people's lives and property safety, constructing harmonious Society has great social and economic benefits.
The main idea of this paper is to conduct real-time monitoring of harmful gases and temperature, then the signal is processed in response to appropriate action to prevent fire. The whole system consists of manipulator, transmitter, intelligent sensor parts. Because the system has many parts, so communication becomes the priority among priorities. The system adopts intelligent the corresponding gas sensors to collect temperature information, and the user-defined communication protocol is transmitted to the transmitter of the corresponding transmitter, judgment to make the appropriate action of the signal. And then through the Modbus and PC for effective communication, also can use the manipulator for signal acquisition, the transmitter function settings. Manipulator of transmitter using Modbus with the combination of infrared communication communication.
In the aspect of hardware, we consider the system need long-term operation and use in flammable and explosive environment. So the use of STM32L series low power MCU produced by ST company, the STM32L series chip we designed the power supply circuit, touch button, LCD display, flash circuit, sensor processing circuit and so on. At the end of operation of the whole system. To realize all the work of the whole system.

【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：X932;TP274

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本文編號：1695198