畢業(yè)論文-基于at89c51單片機(jī)的火災(zāi)報(bào)警器設(shè)計(jì)(已修改)
2025-01-24 11:53 本頁面
【正文】 四川師范大學(xué)成都學(xué)院課程設(shè)計(jì)報(bào)告 I 基于單片機(jī)的 火災(zāi)報(bào)警器 設(shè)計(jì) 內(nèi)容摘要： 多少年來，火災(zāi)一直是人們所遭遇的最主要災(zāi)害之一，曾對人類的文明造成了重大破壞，許多著名的建筑大都?xì)в诨馂?zāi)。 由火災(zāi) 引發(fā)的重大安全事故比 比 皆是，所以人類一直也未停止過對它的研究。 本 文介紹了一種適用于多種公共場所的基于單片機(jī)火災(zāi)報(bào)警系統(tǒng)。 本系統(tǒng)以 AT89C51 為主控制器， DS18B20 溫度傳感器 為感溫器件， 離子感煙傳感器 為感煙元件，將煙霧和溫度等信號轉(zhuǎn)化為可檢測的電信號。然后 將傳感器輸出的電信號送入 A/D 轉(zhuǎn)換電路 ,完成煙霧傳感器和溫度傳感器輸出的模擬信號到數(shù)字信號的轉(zhuǎn)換， 再由 單片機(jī)判斷現(xiàn)場是否發(fā)生火災(zāi)。若發(fā)生火災(zāi)，系統(tǒng)會(huì)驅(qū)動(dòng)蜂鳴器和 LED 指示燈報(bào)警。 該 系統(tǒng)主要由煙感數(shù)據(jù)采集模塊、單片機(jī)控制模塊、驅(qū)動(dòng)聲光報(bào)警模塊組成 ， 采用高性能的單片機(jī)芯片為核心 和高靈敏度的離子感煙傳感器 和溫度傳感器，而且利用聲音和指示燈兩種報(bào)警形式進(jìn)行報(bào)警提示，大大的提高 了系統(tǒng)的精確性和可靠性。 關(guān)鍵詞： 火災(zāi)報(bào)警器 離子感煙探測器 AT89C51 單片機(jī) DS18B20 四川師范大學(xué)成都學(xué)院課程設(shè)計(jì)報(bào)告 II Fire Alarm Abstract: For many years, fire was people encountered the main disasters, had to human civilization caused major damage. Many famous buildings mostly destroyed in the fire. A major safety accident caused by a fire can be found everywhere, so human beings have never stopped studying it. This paper introduces a kind of fire alarm system based on single chip microputer, which is suitable for many kinds of public places. The system takes the AT89C51 as the main controller, and the DS18B20 temperature sensor is a temperature sensor, the ion sensor is a sensor, and the signal can be converted into a detectable signal. Then the sensor output of the electrical signal into the A/D conversion circuit, plete the smoke sensor and temperature sensor output analog signal to digital signal conversion, and then by the microcontroller to determine whether the scene of fire. If a fire occurs, the system will drive the buzzer and LED indicator alarm. The system mainly by the smoke sense data collection module, MCU control module, drive the sound and light alarm module, as the core and high sensitivity of ion smoke sensor and temperature sensor with high performance single chip, and the use of sound and the indicator lamp two types of alarm, alarm, greatly improve the accuracy and reliability of the system. Key words: fire alarm smoke detector AT89C51 MCU DS18B20 四川師范大學(xué)成都學(xué)院課程設(shè)計(jì)報(bào)告 III 目 錄 1 緒論 ................................................................................................................ 1 課題研究背景 ......................................................................................... 1 國內(nèi)外火災(zāi)報(bào)警器研究歷史 ............................................................................................... 1 火災(zāi)報(bào)警技術(shù)的發(fā)展趨勢 ................................................................................................... 3 2 火災(zāi)報(bào)警器系統(tǒng)總體方案設(shè)計(jì) ..................... 3 火災(zāi) 產(chǎn)生的原理 ................................................................................................................... 4 系統(tǒng)設(shè)計(jì)要求 ....................................................................................................................... 4 3 系統(tǒng)硬件設(shè)計(jì) ................................... 5 煙感傳感器 .......................................................................................................................... 5 煙感傳感器選擇 ....................................................................................................... 5 離子式感煙探測器介紹 ........................................................................................... 5 溫度傳感器 .......................................................................................................................... 6 溫度傳感器選擇 ....................................................................................................... 6 DS18B20 工作原理 ..................................................................................
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