sensor(redirected from Optical sensor)
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Related to Optical sensor: proximity sensor
a device that detects and responds to a signal or stimulus: A smoke alarm is an essential sensor in case of fire.
1. A device, such as a photoelectric cell, that receives and responds to a signal or stimulus.
2. See sense organ.
(Electronics) anything, such as a photoelectric cell, that receives a signal or stimulus and responds to it
[C19: from Latin sēnsus perceived, from sentīre to observe]
sen•sor(ˈsɛn sɔr, -sər)
1. a mechanical device sensitive to light, temperature, radiation level, or the like, that transmits a signal to a measuring or control instrument.
2. sense organ.
A device that responds to a physical stimulus and converts the stimulus into a signal conveyed to another device. For example, a sensor in a printer detects that the paper tray is empty and sends a signal to the digital display that the tray is out of paper.
An equipment which detects, and may indicate, and/or record objects and activities by means of energy or particles emitted, reflected, or modified by objects.
A device for sensing and measuring light, pressure, or temperature, and sending information back to a computer.
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|Noun||1.||sensor - any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner|
device - an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water"
metal detector - detector that gives a signal when it detects the presence of metal; used to detect the presence of stray bits of metal in food products or to find buried metal
mine detector - detector consisting of an electromagnetic device; used to locate explosive mines
electric eye, magic eye, photocell, photoconductive cell, photoelectric cell - a transducer used to detect and measure light and other radiations
trace detector - a screening device for traces of explosives; used at airline terminals