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  2. Passive infrared sensor - Wikipedia

    en.wikipedia.org/wiki/Passive_infrared_sensor

    A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors . PIR sensors are commonly used in security alarms and automatic lighting applications.

  3. Parking pawl - Wikipedia

    en.wikipedia.org/wiki/Parking_pawl

    The parking pawl locks the transmission's output shaft to the transmission casing by engaging a pawl (a pin) that engages in a notched wheel on the shaft, stopping it (and thus the driven wheels) from rotating. The main components of a parking pawl mechanism are the parking gear, parking pawl, actuator rod, cam collar, cam plate, pivot pin, and ...

  4. Shift-by-wire - Wikipedia

    en.wikipedia.org/wiki/Shift-by-wire

    Park-by-wire can be considered a part of a shift by wire system, as it shifts the transmission into park mode. [1] The main components of a park by wire system include the driver interface which could be a lever, switch, or knob; an electronic control unit ; and actuators which are capable of driving the parking pawl into and out of the locking ...

  5. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    Reed Switch. The hermetically sealed reed switch is a common type of two-piece sensor. This switch operates with an electrically conductive switch that is either normally open or normally closed when under the influence of a magnetic field in respect to proximity to the second piece, which contains a magnet. When the magnet moves away from the ...

  6. Transmission control unit - Wikipedia

    en.wikipedia.org/wiki/Transmission_Control_Unit

    The TPS sensor along with the vehicle speed sensor are the two main inputs for most TCUs. Older transmissions use this to determine engine load, with the introduction of drive-by-wire technology, this is often a shared input between the ECU and TCU. The input is used to determine the optimum time and characteristics for a gear change according ...

  7. Peripheral Sensor Interface 5 - Wikipedia

    en.wikipedia.org/wiki/Peripheral_Sensor_Interface_5

    Peripheral Sensor Interface (PSI5) is a digital interface for sensors. PSI5 is a two-wire interface, used to connect peripheral sensors to electronic control units in automotive electronics . Both point-to-point and bus configurations with asynchronous and synchronous data transmission are supported.

  8. Occupancy sensor - Wikipedia

    en.wikipedia.org/wiki/Occupancy_sensor

    Occupancy sensor types include: PIR sensors, which work on heat difference detection, measuring infrared radiation.Inside the device is a pyroelectric sensor which can detect the sudden presence of objects (such as humans) who radiate a temperature different from the temperature of the background, such as the room temperature of a wall.

  9. Category:Speed sensors - Wikipedia

    en.wikipedia.org/wiki/Category:Speed_sensors

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