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[[File:Robot_sensors.jpg|thumb|right|size|300px|Types of [[robot]] sensors ([[Light]] and [[Sound]] sensors)]]
''Robot sensors'' measure [[robot]] '''configuration''' or '''condition''' and its environment and send such information to robot controller as [[electronics|electronic]] signal for example arm position, presence of toxic gas.<ref>{{cite web | url=http://www.robotstorehk.com/sensor.html | title=Automation and Robotics ( Robot Store ) | publisher=Robot Store (HK) | accessdate=23 January 2015}}</ref>
Robot sensors Provide '''awareness''' of surroundings, allows interaction with environment, Protection & Self-Preservation, Safety, Damage Prevention, Stairwell sensor, Gives the [[robot]] capability to goal-seek, Find colorful objects, seek goals and finally makes robots “interesting”.
Robots often need information that is beyond 5 human senses (e.g., ability to: see in the dark, detect tiny amounts of invisible radiation, measure movement that is too small or fast for the human eye to see).<ref>{{cite web | url=http://www.active-robots.com/sensors | title=Robotics sensors (Active) | publisher=Active Robots | accessdate=23 January 2015}}</ref>
=== Part-Picking= ==
Robot can handle work pieces that are randomly piled by using 3-D vision sensor. Since alignment operation, a special parts feeder, and an alignment pallete are not required, an automatic system can be constructed at low cost. Vision Sensors for example to pick bins, perform inspection, etc. In parts fitting and insertion Robots can do precise fitting and insertion of machine parts by using force sensor. A robot can insert parts that have the phases after matching their phases in addition to simply inserting them. It can automate high-skill jobs.<ref>{{cite web | url=http://www.universalrobotics.com/random-bin-picking | title=Random Bin Picking & Automated Assembly | publisher=Universal | accessdate=23 January 2015}}</ref>
=== Robot Sensation= ==
* Light: Presence, color, intensity, content (mod), direction.
* Sound: Presence, frequency, intensity, content (mod), direction.