【正文】 按下呼梯按鈕，被呼層按鈕數(shù)字指示燈亮，到站后撤消記憶，指示燈滅。 ③層門機械門鎖功能每層門均有機械門鎖，當轎廂不在本層站停靠時，層門不能開啟，如特殊情況，可用本廠隨梯配帶的專用鑰匙開啟層門。 的剛性導軌之間。由于體積小很容易裝 入機械內(nèi)部，是實現(xiàn)機電一體化的理想控制設備 。 四、 系統(tǒng)的設計、建造工作量小，維護方便，容易改造 PLC 用存儲邏輯代替接線邏輯，大大減少了控制設備外部的接線，使控制系統(tǒng)設計及建造的周期大為縮短，同時維護也變得容易起來。加上 PLC 通信能力的增強及人機界面技術的發(fā)展，使用 PLC 組成各種控制系統(tǒng)變得非常容易。 二、 配套齊全，功能完善 適用性強 PLC 發(fā)展到今天，已經(jīng)形成了大、中、小各種規(guī)模的系列化產(chǎn)品。從 PLC 的機外電路來說，使用 PLC 構成控制系統(tǒng)，和同等規(guī)模的繼電接觸器系統(tǒng)相比，電氣接線及開關接點已減少到數(shù)百甚至數(shù)千分之一，故障也就大大降低。但可編程控制器產(chǎn)品并不針對某一具體工業(yè)應用，在實際應用時， 其硬件需根據(jù)實際需要進行選用配置，其軟件需根據(jù)控制要求進行設計編 制 。它采用一類可編程的存儲器，用于其內(nèi)部存儲程序，執(zhí)行邏輯運算 ,順序控制，定時，計數(shù)與算術操作等面向用戶的指令，并通過數(shù)字或模擬式輸入 /輸出控制各種類型的機械或生產(chǎn)過程。 B 在電梯上使用藍牙技術一定會使電梯控制系統(tǒng)大量使用最新最快微機，這將會進一步提高電梯整機可靠性，故障率大大降低，控制精度也進一步提高，帶來的結果是電梯更加舒適，平層更加準確。（ 2）藍牙技術在電梯上應用。電梯裝璜將采用無（少）環(huán)境污染材料。 電梯技術發(fā)展趨勢 （ 1）環(huán)保：綠色理念是電梯發(fā)展總趨勢。 “ 安全的升降梯 ” 發(fā)明成功了！一時間，奧的斯成了眾人注目的中心。此種方法一直沿用到近代直到瓦特發(fā)明了蒸汽機，約在 1800 年，煤礦主才能利用起重機把礦井中的煤輸送上來。而 PLC 控制系統(tǒng)由于運行可靠性高，使用維修方便，抗干擾性強 ,設計和調(diào)試周期較短等優(yōu)點，倍受人們重視等優(yōu)點，已成為目前在電梯控制系統(tǒng)中使用最多的控制方式，目前也廣泛用于傳統(tǒng)繼電器控制系統(tǒng)的技術改造。更新?lián)Q代生產(chǎn)更新型的電梯，電梯主要分為機械系統(tǒng)與控制系統(tǒng)兩大部份，隨著自動控制理論與微電子技術的發(fā)展，電梯的拖動方式與控制手段均發(fā)生了很大的變化，交流調(diào)速是當前電梯拖動的主要發(fā)展方向。 四層雜物電梯 PLC 控制 外文翻譯 Abstract microelectronic technology39。s technological transformations. The origin and development of the elevator Elevator in the Chinese dictionary explanation: building electricity powered lift, instead of walking up and down the stairs. When it es to lift from the origin of the 2600 BC Egyptians built in Pyramid using the original lifting system to start, but this kind of crane energy are human. By 1203, two French monastery installed a crane, the difference is just the machine is the use of donkey as power, load by around a large drum rope for hoisting. This method has been used to modern until Watt invented the steam engine, in about1800, mine owners can use the crane to mine in coal transportation. For hundreds of years, people made various types of elevators, they all have a mon defect: as long as the lifting rope snaps, lifting ladder he rapidly hit bottom layer. 1854 Otis design a brake: in the lift platform mounted on top of a truck with a spring and a brake lever and Lift Wells Road on both sides of the guide rail is connected with the lifting rope, wagon springs, this is only the lifting platform weight is sufficient to pull spring, avoid contact with the brake lever. If the rope breaks, truck spring will pull the ends of vertical weakened, and the brake lever occlusal, can be firmly fixed without in situ platform continues to fall. Safe lifting ladder invention success! For a time, Otis has bee the center of attention. The first lift not Otis invented, but he was the first safe lift the inventor. Security this concept not only create lift industry, but also for those who want to build more tall buildings to add more available space design are open thoroughfare. However it can be called the elevator ( electric energy to drive the elevator ) of the product should be at the beginning of the twentieth Century emerged. Elevator technology development trend (1): green environmental protection concept is the development trend of elevator. Have expert prophecy who first introduced green products and market of race to control, who will grasp the market petition initiative. Development trend to basically have : the continuous improvement of product design, production of environme