Line Following Autonomous Office Assistant Robot with PID Algorithm

The involvement of assistive robot in every aspect of our life is immensely increasing in today's world. In this paper, a line following robot to assist an office is developed which can securely transfer hard copy of office file, tea snacks etc from one table to another inside an office autonomously as per user direction. Anybody can call the robot from any table by pressing a PUSH button. As a response of calling, the robot will come to the caller table following a path and a locker placed in the robot will be unlocked automatically. The caller then placed the file or any other materials in the locker and can direct the robot to another table by pressing another push button. The locker will not open until the robot reach at directed table to ensure the security. The robot also can detect obstacles and can produce alarm if someone stands in its path. The robot smoothly follows the path with the PID algorithm. The main components that are used to construct the robot are microcontroller, IR sensor module, RF Tx-Rx module, ultrasonic sensor, buzzer and DC motor. In every office there required a peon to transfer the files or other materials whereas they have to perform other tasks too. This robot can be useful to decrease the workload of office peons to involve him with more essential works.