Controller for an elevator system

The project is about building an elevator that can perform a basic operation. The elevator body was designed from acrylic and fitted inside a base in order to fix the placement of the structure. The use of steel is to make sure that it will balance the main structure. The elevator is being control by a CQM1H Programmable Logic Controller (PLC), which is an integrated circuit that can be programmed [1]. The input variables for the controller are such as photoelectric sensors and limit switches. Sensor plays an important role in this project which is the controlling part of the elevator depends on a sensor that detects any conditions that are set upon. The elevator has to complete it basic function. All the movements either stop to pick and place the passenger or move will depend on the ability of a sensor to detect the car.