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  2. Wheel speed sensor - Wikipedia

    en.wikipedia.org/wiki/Wheel_speed_sensor

    Historically, magnetic sensor systems cost more than optical systems, but this difference is narrowing rapidly. Magnetic Hall and magnetoresistive sensor systems can be imbedded in plastic or potting material, which increases mechanical reliability and eliminates damage from water and grease. Wheel speed sensors can also include hysteresis ...

  3. Defect detector - Wikipedia

    en.wikipedia.org/wiki/Defect_detector

    The detectors are normally integrated into the tracks and often include sensors to detect several different kinds of problems that could occur. Defect detectors were one of the inventions which enabled American railroads to eliminate the caboose at the rear of the train, as well as various station agents placed along active routes to detect ...

  4. Telematics car insurance: Is the discount worth sharing your ...

    www.aol.com/finance/car-insurance-telematics...

    Uses your phone sensors and GPS to measure distance, acceleration, braking patterns and driving times. Download an app. Black box device. Mounts to the car’s interior. Self-install with adhesive ...

  5. Tilt detector - Wikipedia

    en.wikipedia.org/wiki/Tilt_detector

    Circuit diagram of a tilt sensor in the case of electronic components. There is a wide variety of technologies of this type of device. Here is a list of the main technologies : When the sensor is powered, a rolling ball drops to the bottom of the sensor to make an electrical connection with a conductive plate underneath.

  6. Alarm device - Wikipedia

    en.wikipedia.org/wiki/Alarm_device

    Alarm devices can be fitted to buildings as well as vehicles. Many buildings are fitted with fire alarms, ranging from a self-contained domestic smoke detector to a sophisticated alarm system that can operate building fire fighting systems automatically to extinguish fires with water or inert gases.

  7. Hall effect sensor - Wikipedia

    en.wikipedia.org/wiki/Hall_effect_sensor

    Hall sensors are used for proximity sensing, positioning, speed detection, and current sensing applications [1] and are common in industrial and consumer applications. Hundreds of millions of Hall sensor integrated circuits (ICs) are sold each year [ 2 ] by about 50 manufacturers, with the global market around a billion dollars .

  8. Parking sensor - Wikipedia

    en.wikipedia.org/wiki/Parking_sensor

    The electromagnetic parking sensor (EPS) was re-invented and patented in 1992 by Mauro Del Signore. [2] Electromagnetic sensors rely on the vehicle moving slowly and smoothly towards the object to be avoided. Once an obstacle is detected, the sensor continues to signal the presence of the obstacle even if the vehicle momentarily stops.

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