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近年来,国外各主要电梯生产厂家,已开发了一系列微机控制电梯的新品种,部分产品已进入国内市场。国内电梯生产厂除迅达、奥的斯等中外合资厂引进技术生产微机控制电梯外,其余的中小型生产厂还很少有微机控制电梯投放到市场。应该说,目前以微机的逻辑功能,控制电梯的运行动作并非困难的事,关键的问题是电梯生产厂对国内设计生产的可靠性和稳定性,尚缺乏足够的信心。而笔者认为,把工业控制系统中国内外都广泛应用的可编程序控制器(Programmable Controller)简称PC,用于电梯控制系统里,既具备微机控制的一系列优点,又可以克服单纯应用微机存在的不足之
In recent years, major foreign elevator manufacturers have developed a series of new types of microcomputer-controlled elevators, some of which have entered the domestic market. In addition to the introduction of technology-controlled microcomputer-controlled elevators in Chinese and foreign joint ventures such as Schindler and Otis, domestic elevator manufacturers have few microcomputer-controlled elevators to put into the market. It should be said that at present, controlling the operation of elevators is not a difficult task with the logic function of the microcomputer. The key issue is the reliability and stability of elevator production plants for domestic design and production. There is still insufficient confidence in elevator production plants. The author believes that the PLC, which is widely used at home and abroad in industrial control systems, is abbreviated as PC and is used in elevator control systems. It not only possesses a series of advantages of microcomputer control, but also overcomes the existence of a simple application of a microcomputer. Insufficient