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,然后 5。拉是拉電阻器的電流限制在同一時(shí)間通過嵌入在高的地方,阻力不確定性的信號。在同時(shí)主芯片也可以是外部的現(xiàn)場報(bào)警蜂鳴器。 DS18B20 與主芯片連接圖。在無煙或無燃燒,收集受到碰撞電離電流的統(tǒng)計(jì)波動,保持平衡的 潛力。技術(shù)參數(shù)如表 1。 煙霧信號處理芯片的選擇,是摩托羅拉公司的 MC14468, DIP16 管腳封裝的MC14468,包含振蕩器,定時(shí)器,閂鎖,當(dāng)沒有檢測到煙霧報(bào)警控制邏輯電路,高輸入阻抗比較等, MC14468 內(nèi)部振蕩器,振蕩周期 。這一切都保持除了指示燈閃爍,電池電壓報(bào)警器,煙霧報(bào)警器檢測到任何煙霧。 在圖 3中, MC144681 針聯(lián)合 PD1 引腳單片機(jī)作為弱側(cè)蔓延檢獲 15 MC14468 內(nèi)部的邏輯處理電路處理,現(xiàn)場煙霧探測和變化,產(chǎn)生電壓變化的離子電流的離子室時(shí),煙霧檢測引腳輸出高微控制器處理。 在圖 3中, MC144681 針聯(lián)合 PD1 引腳單片機(jī)作為弱側(cè)蔓延檢獲 15 MC14468 內(nèi) 部的邏輯處理電路處理,現(xiàn)場煙霧探測和變化,產(chǎn)生電壓變化的離子電流的離子室時(shí),煙霧檢測引腳輸出高微控制器處理。 圖 3。單片機(jī)和撥號管理過程中建立的模塊可以為用戶提供的各種信號輸入和輸出端口,防盜報(bào)警,信號采集,自動控制,遠(yuǎn)程通信和信息傳輸領(lǐng)域,如 靈活的應(yīng)用。電話線路狀態(tài)檢測,自動故障信號輸出 。觸發(fā)時(shí)間, 9次循環(huán)撥號預(yù)設(shè)號碼 。 EX1 接線圖,在圖 4 所示,將 PD4 引腳連接主芯片氚,模塊開始撥號報(bào)警臺PD4 輸出高電平信號, PD5 連接 ON/ OFF 端子 輸入是高電平信號打開撥號設(shè)置,輸入不工作時(shí),此引腳變低,錯(cuò)誤連接引腳 PD6單片機(jī)引腳 PD6 輸出 1開始測試是否完成電話線路故障, READY 引腳連接單片機(jī)的 PD7引腳檢測和報(bào)警,報(bào)警結(jié)束當(dāng) PD7引腳是高的。主程序流程圖 因?yàn)樵诨馂?zāi)和陰燃階段的早期階段會產(chǎn)生大量的氣溶膠粒子和煙霧粒子。當(dāng)檢測到煙霧 R0為 1,不吸煙, R0 為 0。這煙霧傳感器和溫度傳感器配合使用,大大提高了檢測的可靠性,防止漏報(bào),誤報(bào),程序流程圖如圖 5 所示。所以它的應(yīng)用可以大大減少火 災(zāi)損失,提高了倉庫的安全可靠性比以前單一的火災(zāi)報(bào)警設(shè)備,并防止失敗的報(bào)告和誤導(dǎo)。 參考文獻(xiàn) [1] 苗順兵,熊光明,李永平等等火災(zāi)自動報(bào)警系統(tǒng)的設(shè)計(jì)與研究,機(jī)械制造技術(shù), 2021( 2), p909。 [3] 周倜。 [4] 霍尼韋爾 ,建筑設(shè)備監(jiān)控系統(tǒng),智能建筑與城市信息, 2021( 4) [5] 德里克 [6] 張華中,火災(zāi)自動報(bào)警及消防指揮系統(tǒng)基于因特網(wǎng)的聯(lián)動控制,計(jì)算機(jī)工程,2021 年。 附件 2:外文原文(復(fù)印件) Automatic fire alarm system based on MCU Abstract: The paper introduced an automatic warehouse fire a1arm system based on MCU. The system was mainly made up of ATmega16, temperature sensors, smoke sensors, and EX1 auto dialed alarm module. In the system, temperature signals were transformed to serial data, and smoke signals were transformed to voltage signals. All the data were processed by MCU. When the surveillance system checked fire in warehouse, alarm signal was turn on, meanwhile the messages were transmitted to managers through EX1. Application of the system was convenient to deal with fire intime, efficiently by warehouse manager. Keywords: fire alarm transducer。ATmega16。smoke sensor I. INTRODUCTION Automatic fire alarm control system has experienced a process from the simple to the plex and intelligence system increasingly in China. The characteristic is automatic fire detection and alarm technology has a great progress along with puting and detection technology development. At present, automatic fire alarm control system was used in bulk storage plant, shopping malls, highlevel office buildings, hotels and other places. They were used in a number of collections focused on one area of intelligent alarm control method with higher levels of bustype alarm control system, and in some residential areas and mercial buildings were installed by a single automatic fire alarm detection device. These alarm detection devices fail to report sometimes, or misinformation. Its reliability is not high because of using single sensor. Therefore, it is needed to develop a simple structure, low cost, high reliability, fast responding, automatic fire detection system. II. GENERAL PROJECT OF THE SYSTEM The hardware block diagram shown in Figure 1, hardware by temperature sensors, smoke sensors, signal processing module, MCU modules and automatic alarm module. Non electrical quantity that is through the sensing element sensors (smoke sensors and temperature sensors) will be onsite temperature, smoke and other nonelectrical signal into an electrical signal, as well as signals for signal processing to convert analog quantity to digital quantity. Finally, the sampled data were processed and pared with the limits by MCU system. This system can produce local and remote autoalarm signals. Temperature Ionization Transducer smoke detector signal processing PD0 PD1 SCM auto alarm module