6ES7307-1EA00-0AA0
6ES7307-1EA00-0AA0
6ES7307-1EA00-0AA0
6ES7307-1EA00-0AA0
目前日益流行的智能建筑(InbligentBuidings)是建筑技術(shù)與計(jì)算機(jī)信息技術(shù)相結(jié)合的產(chǎn)物，是信息社會(huì)的需要，也是未來建筑發(fā)展的方向。智能建筑主要由樓宇自動(dòng)化系統(tǒng)(BuidingAutomationSystem，縮寫為BAS)、通信自動(dòng)化系統(tǒng)(CAS)和辦公自動(dòng)化系統(tǒng)(OAS)三大系統(tǒng)組成。其中，
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樓宇自動(dòng)化系統(tǒng)是智能建筑中最基本和最重要的組成部分。樓宇自動(dòng)化系統(tǒng)是利用計(jì)算機(jī)及其網(wǎng)絡(luò)技術(shù)、自動(dòng)控制技術(shù)和通信技術(shù)構(gòu)建的高度自動(dòng)化的綜合管理和控制系統(tǒng)，將大樓內(nèi)部各種設(shè)備連接到一個(gè)控制網(wǎng)絡(luò)上，通過網(wǎng)絡(luò)對(duì)其進(jìn)行綜合的控制，這些設(shè)備包括空調(diào)、照明設(shè)備、電梯、消防設(shè)備、安防設(shè)備等等。它確保建筑物內(nèi)的舒適和安全的辦公環(huán)境，同時(shí)實(shí)現(xiàn)高效節(jié)能的要求。
2 現(xiàn)場(chǎng)控制系統(tǒng)FCS的出現(xiàn)以及在樓宇自控中的應(yīng)用
上個(gè)世紀(jì)七八十年代，伴隨著計(jì)算機(jī)可靠性提高，價(jià)格大幅下降，出現(xiàn)了由多個(gè)計(jì)算機(jī)遞階構(gòu)成的集中、分散相結(jié)合的分布式控制系統(tǒng)(Distributed Control System，簡(jiǎn)稱DCS)。DCS是利用計(jì)算機(jī)技術(shù)對(duì)生產(chǎn)過程進(jìn)行集中監(jiān)視、操作、管理和分散控制的一種綜合控制系統(tǒng)。它的測(cè)量變送儀表一般是模擬儀表，因此它屬于一種模擬數(shù)字混合控制系統(tǒng)，這種系統(tǒng)較以前的各種控制系統(tǒng)有了較大的進(jìn)步。DCS在工業(yè)自動(dòng)化控制領(lǐng)域獲得了廣泛的應(yīng)用，也開始應(yīng)用到樓宇自動(dòng)化控制領(lǐng)域，但是DCS存在如下一些缺點(diǎn)：
(1)安裝費(fèi)用高。采用一臺(tái)儀表、一對(duì)傳輸線的接線方式，導(dǎo)致接線龐雜、工程周期長(zhǎng)、安裝費(fèi)用高、維護(hù)困難；
(2)可靠性差。模擬信號(hào)傳輸精度低，而且抗干擾性差；
(3)系統(tǒng)封閉。各廠家的產(chǎn)品自成系統(tǒng)，系統(tǒng)封閉、不開放，難以實(shí)現(xiàn)產(chǎn)品的互換與互操作以及組成更大范圍的網(wǎng)絡(luò)系統(tǒng)。
上個(gè)世紀(jì)90年代以來，隨著控制技術(shù)、計(jì)算機(jī)技術(shù)、通信技術(shù)的發(fā)展，出現(xiàn)了基于現(xiàn)場(chǎng)總線的控制系統(tǒng)(FCS)，F(xiàn)CS克服了DCS的缺點(diǎn)，它是一種全數(shù)字化的、全分散的、全開放、可互操作和開放式互連的新一代控制系統(tǒng)。
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SAFTRONICS AA1234 PCB
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SAFTRONICS AA1262 CA262 SR/CL BOARD
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SAFTRONICS AA1049 ISOLATION BOARD
SAFTRONICS AA1069 DANCER BOARD
SAFTRONICS AA1080-1 CONTROL BOARD
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SAFTRONICS AA1085 DUAL P/S
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SAFTRONICS AA1103 RAMP OPTION BOARD
SAFTRONICS AA1107-1 POWER SUPPLY
SAFTRONICS AA1123 POWER BOARD
SAFTRONICS AA1128-A DG2P15 CONTROL BOARD
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SAFTRONICS AA1185 DG2 CONTROL BOARD
SAFTRONICS AA1200 CONTROL BOARD
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SAFTRONICS AA1246 WINDER BOARD
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