Design and Implementation of Automatic Door using PLC

Project Description:

1. PLC: A PLC is an industrial digital computer which receives information from connected sensors or input devices, processes the data, and triggers outputs based on pre-programmed parameters. Depending on the inputs and outputs, a PLC can monitor and record run-time data such as machine productivity or operating temperature, automatically start and stop processes, generate alarms if a machine malfunction, and more.
2. IR sensor: An Infrared sensor can measure the heat of an object as well as detects the motion. These types of sensors measure only infrared radiation, rather than emitting it that is called a passive IR sensor. Usually, in the infrared spectrum, all the objects radiate some form of thermal radiations. In this project, you will use this sensor to detect the presence of human and their movement towards the door.
3. Servo Motor: Motor is a rotary actuator or linear actuator that is capable of carrying out precise control of angular or linear position, velocity, and acceleration. It uses a suitable motor coupled to a sensor for position feedback. The motor drives the door when the input is given.
4. Limit Switch: A limit switch is an electromechanical device that consists of an actuator mechanically linked to a set of contacts. When an object comes into contact with the actuator, the device operates the contacts to make or break an electrical connection. This device will be used to restrict or control the movement of the door.

Project Implementation:

1. At 1st install LOGO! Soft comfort v8.0 in your PC. Then draw circuit and write code with proper logic to import into PLC.
2. Then design your door and fabricate it using plywood.
3. Connect IR sensor, Limit switch and Servo motor properly keeping in mind the design of your door. Do proper calibration of the sensors.
4. Upload the code in PLC and test your prototype.
5. If you observe any error correct your program and test your prototype again.
6. According to the design and hardware used write VDHL code and test it by implementing in your prototype.

Software requirements:

• PLC
• IR sensor
• servo motor
• limit switch
• plywood

• PLC
• automatic door using plc
• electronic