The elevator is an important vertic

The elevator is an important vertical platform for high-rise buildings. With the development of society, the scale of construction is getting larger and larger, and more and more floors put forward higher requirements for the static and dynamic characteristics of elevator speed regulation and speed regulation range. The elevator is a complex system that integrates mechatronics. It involves not only mechanical transmission, electrical control and civil engineering, but also reliability, comfort and aesthetics. For modern elevators, it should be highly safe. In fact, the elevator has taken many security measures. When designing an elevator, a large safety factor and insurance factor are applied to the mechanical components and electrical components. However, only the manufacture, installation and commissioning of the elevator, after-sales service and maintenance can guarantee the highest quality of the elevator. In foreign countries, the “Regulations” implemented the integration of elevator manufacturing, installation and maintenance, and established a maintenance unit of a professional installation team recognized by a number of manufacturing companies, and standardized, installed and commissioned, regular maintenance and inspection tests. It ensures the reliable operation and safety of the elevator [1]. Therefore, it can be said that it is safer to take the elevator.
An American insurance company carefully investigated and scientifically calculated the safety of the elevator. The conclusion is that taking the elevator is five times safer than walking the stairs. According to statistics, the number of other transport vehicles in the United States is about 8 billion, and the number of people taking elevators is 5.4 billion. At present, an elevator operation logic control system composed of a programmable logic controller (PLC) and a microcomputer is rapidly developing. PLC-controlled elevators have the advantages of high reliability, easy maintenance and short development cycle. The elevator is more reliable and has more flexibility to complete more complex control tasks, which has become the development direction of elevator control [2].