需要金幣： 1000 個金幣 |
資料包括：完整論文，開題報告，任務(wù)書 |  |
 |
| 轉(zhuǎn)換比率：金額 X 10=金幣數(shù)量， 例100元=1000金幣 | 論文字?jǐn)?shù)：16141 |  | |
| 折扣與優(yōu)惠：團(tuán)購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要:剩余電流就是低壓配電線路中各相(含中性線)電流矢量和不為零的電流。當(dāng)今，單片機的技術(shù)已經(jīng)非常成熟了，它集成度高、功能強、存儲量大、速度快、抗干擾性強和指令豐富等的優(yōu)點，使它的應(yīng)用遍及各個領(lǐng)域。本文設(shè)計的系統(tǒng)就是單片機應(yīng)用于火災(zāi)監(jiān)控的一個例子。本系統(tǒng)是一種高精度、測控速度快的應(yīng)用性比較強的剩余電流式火災(zāi)智能監(jiān)控系統(tǒng)。 本系統(tǒng)以AT89S52單片機為控制核心，通過硬件電路的制作和軟件程序的編制，實現(xiàn)一個火災(zāi)監(jiān)控系統(tǒng)。本系統(tǒng)主要包括信號采集模塊、溫度采集調(diào)理模塊、A/D轉(zhuǎn)換模塊、外部顯示模塊、時鐘模塊、報警模塊和存儲模塊。在前向通道一路通過熱敏電阻（PT100）對溫度進(jìn)行采集，另一路用剩余電流互感器測電流，轉(zhuǎn)化成直流電壓，這兩路采集到的數(shù)據(jù)通過A/D轉(zhuǎn)換模塊轉(zhuǎn)換成數(shù)字信號，通過單片機處理，顯示屏顯示電流值和溫度值，當(dāng)電流超過設(shè)定值時蜂鳴器將報警。 本系統(tǒng)的軟件采用C語言進(jìn)行模塊化編程。本系統(tǒng)響應(yīng)速度比較迅捷，還具有功耗低，可靠性好的特點。所以本系統(tǒng)具有很強的應(yīng)用性，適合建筑電氣火災(zāi)監(jiān)控。 關(guān)鍵詞：單片機；剩余電流；A/D轉(zhuǎn)換；熱敏電阻（PT100）
Abstract:Residual current of each phase in the low-voltage distribution lines (including neutral) current vector sum of the current is not zero. Nowadays, computer technology is already very mature, of its high integration, strong function, large storage capacity, fast speed, strong anti-interference and rich in instruction and other advantages, it is applied widely in various fields. The system is designed in single chip microcomputer application in fire monitoring as an example. This system is a kind of high precision, fast speed control in the application of relatively strong residual current fire monitoring system. The design uses the AT89S52 single-chip microcomputer as the control core, through the production of the hardware circuits and software programming, the realization of a fire control system. The system includes a signal acquisition module, the temperature acquisition conditioning module, A / D conversion module, an external display module, clock module, the alarm module and storage module.In the forward channel through a thermistor ( PT100) on the temperature of the collection. Another way, the residual current mutual inductor current to be measured, is converted into DC voltage. The two road collected data into a digital signal converted by the A/D converter module, single-chip processing, the display shows the current value and temperature value, the buzzer will alarm when the current exceeds the set value. The system software uses C language modular programming. The response speed of the system is relatively quick, but also has the advantages of low power consumption, good reliability. So this system has very strong application, suitable for building electric fire monitor. Key words：single-chip microcomputer, residual current, A/D convert, thermistor(PT100)
|
