描述

MVME61006E-0173

?可編程控制器簡稱——PLC是以微處理器為基礎(chǔ)，綜合了計算機技術(shù)、自動控制技術(shù)和通訊技術(shù)發(fā)展而來的一種新型工業(yè)控制裝置。專家認為，可編程控制器將成為今后工業(yè)控制的主要手段和重要的基礎(chǔ)設(shè)備之一，PLC、機器人、CAD/CAM將成為工業(yè)生產(chǎn)的三大支柱。

? ? 可編程控制器簡稱——PLC是以微處理器為基礎(chǔ)，綜合了計算機技術(shù)、自動控制技術(shù)和通訊技術(shù)發(fā)展而來的一種新型工業(yè)控制裝置。它具有結(jié)構(gòu)簡單、編程方便、可靠性高等優(yōu)點，已廣泛用于工業(yè)過程和位置的自動控制中。據(jù)統(tǒng)計，可編程控制器是工業(yè)自動化裝置中應(yīng)用最多的一種設(shè)備。專家認為，可編程控制器將成為今后工業(yè)控制的主要手段和重要的基礎(chǔ)設(shè)備之一，PLC、機器人、CAD/CAM將成為工業(yè)生產(chǎn)的三大支柱。

? ? PLC是在繼電器控制邏輯基礎(chǔ)上，與3C技術(shù)（Computer,Control,Communication）相結(jié)合，不斷發(fā)展完善的。目前已從小規(guī)模單機順序控制，發(fā)展到包括過程控制、位置控制等場合的所有控制領(lǐng)域。

? ? PLC早期主要應(yīng)用于工業(yè)控制，但隨著技術(shù)的發(fā)展，其應(yīng)用領(lǐng)域正在不斷擴大下面就其在公路交通領(lǐng)域的應(yīng)用做一簡單介紹：

? ? PLC型交通燈控制器

? ? 將PLC用于對交通信號燈的控制，主要是考慮其具有對使用環(huán)境適應(yīng)性強的特性，同時其內(nèi)部定時器資源十分豐富，可對目前普遍使用的“漸進式”信號燈進行精確控制，特別對多岔路口的控制可方便的實現(xiàn)。目前大多品牌的PLC內(nèi)部均配有實時時鐘，通過編程控制可對信號燈實施全天候無人化管理。由于PLC本身具有通訊聯(lián)網(wǎng)功能，將同一條道路上的信號燈組成一局域網(wǎng)進行統(tǒng)一調(diào)度管理，可縮短車輛通行等候時間，實現(xiàn)科學化管理。

? ? 公路收費系統(tǒng)中的應(yīng)用—PLC型車道控制機

? ? 每個公路收費站，其車道機電設(shè)備配置、型號各有不同，因此用于控制這些設(shè)備的主機—車道控制器的結(jié)構(gòu)也不盡相同，通用性、可維護性較差，不利于使用及維修，以PLC作為主機開發(fā)出的新型車道控制機，不僅可使其通用性、維護性得到最大程度上的改善，還可以在使用壽命、穩(wěn)定性機控制功能方面獲得極大提高，具體敘述如下：

? ? 1.對棚燈及霧燈的控制

? ? 如前所述，由于PLC本身具有時鐘功能，通過軟件編程，可對棚燈、霧燈進行無人化、智能控制。

? ? 2.對費額顯示器的控制

? ? PLC本身具有上位機接口，可接收上位收費計算機下傳的數(shù)據(jù)，而PLC具有各種譯碼指令，可將接受的數(shù)據(jù)轉(zhuǎn)換成七段顯示碼，輸出給LED數(shù)碼管進行數(shù)據(jù)顯示。

? ? 3.對擋車器的控制

產(chǎn)品承諾：
保?證?全新原裝進口,
保?證?安全準時發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價格，大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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專業(yè)銷售進口DCS? PLC系統(tǒng)備件模塊

PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅

15天包退換一年質(zhì)保大量現(xiàn)貨? 國內(nèi)實力庫存商家

MVME61006E-0173

描述

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