IR sensor for line following robot

• Main Authors: Zulkifli, Badrul Hisham, Abdul Rahim, Ruzairi, Mohammad Din, Sharulnizahani, Ahmad, Anita, Abas, Khairul Hamimah, Ahmad, Nasarudin
• Format: Book Section
• Language: English
• Published: Penerbit UTHM 2016
• Subjects: TJ210.2-211.47 Mechanical devices and figures. Automata. Ingenious mechanisms. Robots (General); TK7800-8360 Electronics
• Online Access: http://eprints.uthm.edu.my/4148/1/Chapter%201_SIS_S1.pdf; http://eprints.uthm.edu.my/4148/

Generally, in a line following robot as shown in Figure 1.1, IR sensor is used for the robot to detect the line either white or black. The line can either be black on a white surface and white on a black surface. The sensors are installed at the bottom of a front part of the robot. Multiple IR sensors are needed in order to get a more accurate output. The IR sensors come with pair that is a receiver and also a transmitter, we called it Tx and Rexford this application, the transmitter and the receiver is placed near to each other to make it easier to detect the line. When the IR sensor is supplied with certain voltage, the transmitter will transmit the infrared ray. Receiver will receive it. It is usually use to detect an object and also to detect a line on a surface.