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  2. Electro-optical sensor - Wikipedia

    en.wikipedia.org/wiki/Electro-optical_sensor

    An optical sensor converts light rays into electronic signals. It measures the physical quantity of light and then translates it into a form readable by an instrument. An optical sensor is generally part of a larger system that integrates a source of light, a measuring device, and the optical sensor. This is often connected to an electrical ...

  3. Photoelectric sensor - Wikipedia

    en.wikipedia.org/wiki/Photoelectric_sensor

    Remote photoelectric sensors used for remote sensing contain only the optical components of a sensor. The circuitry for power input, amplification, and output switching is located elsewhere, typically in a control panel. This allows the sensor, itself, to be very small. Also, the controls for the sensor are more accessible, since they may be ...

  4. Position sensitive device - Wikipedia

    en.wikipedia.org/wiki/Position_sensitive_device

    PSDs can be divided into two classes which work according to different principles: In the first class, the sensors have an isotropic sensor surface that supplies continuous position data. The second class has discrete sensors in an raster-like structure on the sensor surface that supply local discrete data.

  5. Presence sensing device - Wikipedia

    en.wikipedia.org/wiki/Presence_Sensing_Device

    One category of presence sensing devices is Photoelectric Sensors. Light Curtains also fall into this category. Light curtains use many infrared light beams to form a perimeter around machinery. When two or more consecutively adjacent beams are interrupted, a kill-switch stops the machine until the boundary is reset.

  6. Photodetector - Wikipedia

    en.wikipedia.org/wiki/Photodetector

    Photodetectors, also called photosensors, are sensors of light or other electromagnetic radiation. [1] There are a wide variety of photodetectors which may be classified by mechanism of detection, such as photoelectric or photochemical effects, or by various performance metrics, such as spectral response.

  7. How an AI granny is combating phone scams - AOL

    www.aol.com/ai-granny-combating-phone-scams...

    At first glance, Daisy looks like your stereotypical grandmother: She loves knitting and talking about her family, has a cat named Fluffy, is technologically inept and has plenty of time to shoot ...

  8. Proximity sensor - Wikipedia

    en.wikipedia.org/wiki/Proximity_sensor

    An infrared proximity sensor Optical proximity sensor in a 2016 Samsung smartphone.A proximity sensor is a standard feature of most smartphones, disabling the touchscreen when positioned near an ear during phone calls; more recent (late 2019-early 2020) smartphones with OLED displays may have the sensor mounted under the display.

  9. Deal alert! Sam's Club memberships are only $20 for ... - AOL

    www.aol.com/lifestyle/sams-club-cyber-monday...

    This $20 Club membership promo — it's typically $50 — sets you up for even more savings through the holidays and into 2025. Even if you only shopped at Sam's Club for your holiday needs, the ...