sensors mark sensor • a sensor is one of the compnents of a robot is is very essential. it is used to percive the surroundings of the robot • The mark sensor was developed to detect a specific mark, change of color, or other process indication mark or bar. These units are used in the detection of labels on backgrounds, printing systems, etc where color and or height can influence the process operation. • Because the term marksense was originally a trade name, the Federal Government generally used the term electrographic. In the 1940s, 50s, and 60s, mark sense technology was widely used for applications like processing meter readings recordings on turnaround documents and recording long distance telephone calls. • Eye-mark sensor is a type of mark sensor used to sense the colour present on the paper and make the machine to cut on the place where the paper is marked. It has a transmitter and the receiver which the sends the light signal through transmitter and it senses the colour. The sensed signal is • As shown in Figure 1, there are typically four main components in a sensor node [1], i.e., a sensing unit, a processing unit, a communication unit, and power supply. The sensing unit may be composed of one or more sensors and Analog-to-Digital Converters (ADCs). • As shown in Figure 1, there are typically four main components in a sensor node [1], i.e., a sensing unit, a processing unit, a communication unit, and power supply. The sensing unit may be composed of one or more sensors and Analog-toDigital Converters (ADCs). advantages disadvantages