系統(tǒng)以AT89C2051為核心,基于DS18B20的單總線模式設(shè)計(jì)了一個(gè)多點(diǎn)環(huán)境溫度采集系統(tǒng),解決了傳統(tǒng)測(cè)溫系統(tǒng)的結(jié)構(gòu)復(fù)雜,功耗高,不適應(yīng)野外無(wú)人值守環(huán)境溫度檢測(cè)的問(wèn)題。文章給出了各模塊的硬件電路,軟件設(shè)計(jì)流程以及程序編制中的注意事項(xiàng)。經(jīng)實(shí)驗(yàn),該系統(tǒng)工作穩(wěn)定可靠,功耗低,非常適合無(wú)人值守情況下的野外環(huán)境溫度檢測(cè)。
標(biāo)簽: 環(huán)境 多點(diǎn) 溫度 自動(dòng)
上傳時(shí)間: 2013-10-30
上傳用戶:truth12
CTP單層多點(diǎn)設(shè)計(jì)
上傳時(shí)間: 2013-11-15
上傳用戶:banyou
簡(jiǎn)單介紹了單層多點(diǎn)的實(shí)現(xiàn)
上傳時(shí)間: 2013-10-26
上傳用戶:Bert520
多功能智能溫室監(jiān)控系統(tǒng)設(shè)計(jì)
標(biāo)簽: 多功能 智能溫室 監(jiān)控 系統(tǒng)設(shè)計(jì)
上傳時(shí)間: 2013-11-04
上傳用戶:Altman
以詳細(xì)的步驟講解教你做一款屬于自己的手機(jī)遙控車(chē)!
標(biāo)簽: 手把手 手機(jī) 重力感應(yīng) 遙控車(chē)
上傳時(shí)間: 2013-10-27
上傳用戶:lbbyxmoran
智能巡線小車(chē)的多模式速度控制系統(tǒng)
標(biāo)簽: 智能巡線小車(chē) 多模式 速度控制
上傳時(shí)間: 2013-10-27
上傳用戶:253189838
聲源檢測(cè)與定位的多分辨處理的原理!
上傳時(shí)間: 2013-10-24
上傳用戶:yzy6007
基于紅外探測(cè)原理的多路無(wú)線安防系統(tǒng)設(shè)計(jì)
標(biāo)簽: 紅外探測(cè) 多路 無(wú)線安防 系統(tǒng)設(shè)計(jì)
上傳時(shí)間: 2013-11-15
上傳用戶:semi1981
多遠(yuǎn)程二極管溫度傳感器-Design Considerations for pc thermal management Multiple RDTS (remote diode temperature sensing) provides the most accurate method of sensing an IC’s junction temperature. It overcomes thermal gradient and placement issues encountered when trying to place external sensors. PCB component count decreases when using a device that provides multiple inputs.Better temperature sensing improves product performance and reliability. Disk drive data integrity suffers at elevated temperatures. IBM published an article stating that a 5°C rise in operating temperature causes a 15% increase in the drive’s failure rate. The overall performance of a system can be improved by providing a more accurate temperature measurement of the most critical devices allowing them to run just a few degrees hotter.The LM83 directly senses its own temperature and the temperature of three external PN junctions. One is dedicated to the CPU of choice, the other two go to other parts of your system that need thermal monitoring such as the disk drive or graphics chip. The SMBus-compatible LM83 supports SMBus timeout and logic levels. The LM83 has two interrupt outputs; one for user-programmable limits and WATCHDOG capability (INT), the other is a Critical Temperature Alarm output (T_CRIT_A) for system power supply shutdown.
標(biāo)簽: Considerat Design 遠(yuǎn)程 二極管
上傳時(shí)間: 2014-12-21
上傳用戶:ljd123456
提出一種融合Ad hoc網(wǎng)絡(luò)、GPRS/GSM和PSTN的遠(yuǎn)程分布式環(huán)境狀況實(shí)時(shí)監(jiān)測(cè)系統(tǒng)設(shè)計(jì)方案。由IEEE 802.15.4標(biāo)準(zhǔn)組建的Ad hoc無(wú)線傳感器網(wǎng)絡(luò)負(fù)責(zé)監(jiān)測(cè)環(huán)境溫濕度、光照度、煤氣及CO濃度等;采用GPRS/GSM模塊和嵌入式Modem構(gòu)造無(wú)線網(wǎng)關(guān),實(shí)現(xiàn)Ad hoc網(wǎng)絡(luò)與GPRS/GSM和PSTN的無(wú)縫連接,將無(wú)線傳感器網(wǎng)絡(luò)采集的數(shù)據(jù)發(fā)送到手機(jī)或遠(yuǎn)端計(jì)算機(jī)。系統(tǒng)具有小、遠(yuǎn)和散的特點(diǎn),可實(shí)現(xiàn)多點(diǎn)分布、中央管理、多層報(bào)警和遠(yuǎn)程監(jiān)測(cè)。
標(biāo)簽: 多網(wǎng)融合 環(huán)境 實(shí)時(shí)監(jiān)測(cè) 遠(yuǎn)程
上傳時(shí)間: 2013-11-08
上傳用戶:semi1981
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