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  2. Defect detector - Wikipedia

    en.wikipedia.org/wiki/Defect_detector

    They register the radiation from every journal bearing that passes over them. If a bearing reaches the maximum temperature for safe travel, the detector will flag and count it as a defect. Because bearings can burn off in as little as three minutes, hotbox detector installations are extremely common on many railroads.

  3. Rear Occupant Alert - Wikipedia

    en.wikipedia.org/wiki/Rear_Occupant_Alert

    Rear Occupant Alert (ROA) is motor vehicle manufacturer Hyundai Motor Company's automated vehicle alert system to detect the presence of an occupant in the rear seat of a passenger motor vehicle. [1] The basic system uses door logic. [2] If a rear door is opened and closed and the vehicle is turned on, a dashboard alert will activate when the ...

  4. List of sensors - Wikipedia

    en.wikipedia.org/wiki/List_of_sensors

    Attitude control (spacecraft): Horizon sensor, Earth sensor, Moon sensor, Satellite Sensor, Sun sensor; Catadioptric sensor; Chemoreceptor; Compressive sensing; Cryogenic particle detectors; Dew warning; Diffusion tensor imaging; Digital holography; Electronic tongue; Fine Guidance Sensor; Flat panel detector; Functional magnetic resonance ...

  5. Leak detection - Wikipedia

    en.wikipedia.org/wiki/Leak_detection

    A leak appearing within an analytic region (a rule added to the camera) is immediately analyzed for its attributes, including thermal temperature, size, and behaviour (e.g. spraying, pooling, spilling). When a leak is determined to be valid based on set parameters, an alarm notification with leak video is generated and sent to a monitoring station.

  6. Tell-tale (automotive) - Wikipedia

    en.wikipedia.org/wiki/Tell-tale_(automotive)

    A group of tell-tales showing lights for "brake fluid", "stop lamp" and "check engine" Graphical tell-talesA tell-tale, sometimes called an idiot light [1] or warning light, is an indicator of malfunction or operation of a system, indicated by a binary (on/off) illuminated light, symbol or text legend.

  7. Airborne particulate radioactivity monitoring - Wikipedia

    en.wikipedia.org/wiki/Airborne_particulate...

    Radiation monitors in general have a number of process-control applications in nuclear power plants; [9] a major CPAM application in this area is the monitoring of the air intake for the plant control room. In the event of an accident, high levels of airborne radioactivity could be brought into the control room by its HVAC system; the CPAM ...

  8. Leak detector - Wikipedia

    en.wikipedia.org/wiki/Leak_detector

    Leak detector may refer to: Leak noise correlator; Helium mass spectrometer; Water detector; Gas detector; See also. Water sensor This page was last edited on 16 ...

  9. Electric eye - Wikipedia

    en.wikipedia.org/wiki/Electric_eye

    Electric eye for a garage door opener. An electric eye is a photodetector used for detecting obstruction of a light beam. An example is the door safety system used on garage door openers that use a light transmitter and receiver at the bottom of the door to prevent closing if there is any obstruction in the way that breaks the light beam.