Design and Implementation of Cell-PhoneDetection based Line follower Robot

The Line follower robot is a mobile machine that can detect and follow the line drawn on the floor. Generally, the path is predefined and can be either visible like a black line on a white surface with a high contrasted colour. Light Dependent Resistor (LDR) sensors that installed under the robot.This paper presents a real time detection of mobile phone in restricted area. Mobile transmission detector can sense the presence of an activated mobile phone from distance of one anda-half metres. If anyone is using mobile is this range then it will give the alarm and robot will stop at that location. So it can be used to prevent use of mobile phones for spying and unauthorised video transmission.if a obstacle comes on the way of robot it gives alarm. A non contact proximity sensor is used which can measure the distance and orientation of a surface in a range of four to five centimeters.