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A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact.
An infrared proximity sensorOptical proximity sensor in a 2016 Samsungsmartphone. 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.Smartphone optical proximity sensor without the phone's casing. The sensor itself is the black object on top of the yellow block below it; this block is actually a printed circuit board serving as an interposer.
Proximity sensors can have a high reliability and long functional life because of the absence of mechanical parts and lack of physical contact between the sensor and the sensed object.
Proximity sensors are also used in machine vibration monitoring to measure the variation in distance between a shaft and its support bearing. This is common in large steam turbines, compressors, and motors that use sleeve-type bearings.
A proximity sensor adjusted to a very short range is often used as a touch switch.
Proximity sensors are commonly used on mobile devices.[1] When the target is within nominal range, the device lock screen user interface will appear, thus emerging from what is known as sleep mode. Once the device has awoken from sleep mode, if the proximity sensor's target is still for an extended period of time, the sensor will then ignore it, and the device will eventually revert into sleep mode. For example, during a telephone call, proximity sensors play a role in detecting (and skipping) accidental touchscreen taps when mobiles are held to the ear.[2]
Proximity sensor installed on the front of an iPhone 5 next to the earpiece automatically turning off the touchscreen when the sensor comes within a predefined range of an object (such as a human ear) when using the handset
Parking sensors, systems mounted on car bumpers that sense distance to nearby cars for parking
^O'Brien, Daniel J. (2021-03-22). "A guide for incorporating e-teaching of physics in a post-COVID world". American Journal of Physics. 89 (4): 403–412. doi:10.1119/10.0002437. ISSN 0002-9505. S2CID 221139614.
^ ab"Proximity sensor on Android smartphones". TheCodeArtist.
^Phillips, Jon. "Can a $100 iPad Case Improve 3G Data Power? Lab Test!". Wired.
Wikimedia Commons has media related to Proximity sensors.
January 01, 1970
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This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Proximity sensor news newspapers books scholar JSTOR September 2008 Learn how and when to remove this message You can help expand this article with text translated from the corresponding article in French Click show for important translation instructions View a machine translated version of the French article Machine translation like DeepL or Google Translate is a useful starting point for translations but translators must revise errors as necessary and confirm that the translation is accurate rather than simply copy pasting machine translated text into the English Wikipedia Consider adding a topic to this template there are already 6 178 articles in the main category and specifying topic will aid in categorization Do not translate text that appears unreliable or low quality If possible verify the text with references provided in the foreign language article You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation A model attribution edit summary is Content in this edit is translated from the existing French Wikipedia article at fr Capteur de proximite see its history for attribution You may also add the template Translated fr Capteur de proximite to the talk page For more guidance see Wikipedia Translation A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact 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 Smartphone optical proximity sensor without the phone s casing The sensor itself is the black object on top of the yellow block below it this block is actually a printed circuit board serving as an interposer A proximity sensor often emits an electromagnetic field or a beam of electromagnetic radiation infrared for instance and looks for changes in the field or return signal The object being sensed is often referred to as the proximity sensor s target Different proximity sensor targets demand different sensors For example a capacitive proximity sensor or photoelectric sensor might be suitable for a plastic target an inductive proximity sensor always requires a metal target citation needed Proximity sensors can have a high reliability and long functional life because of the absence of mechanical parts and lack of physical contact between the sensor and the sensed object Proximity sensors are also used in machine vibration monitoring to measure the variation in distance between a shaft and its support bearing This is common in large steam turbines compressors and motors that use sleeve type bearings A proximity sensor adjusted to a very short range is often used as a touch switch Contents 1 Use with smartphones and tablet computers 2 Types of sensors 3 Applications 4 See also 5 ReferencesUse with smartphones and tablet computers editProximity sensors are commonly used on mobile devices 1 When the target is within nominal range the device lock screen user interface will appear thus emerging from what is known as sleep mode Once the device has awoken from sleep mode if the proximity sensor s target is still for an extended period of time the sensor will then ignore it and the device will eventually revert into sleep mode For example during a telephone call proximity sensors play a role in detecting and skipping accidental touchscreen taps when mobiles are held to the ear 2 Proximity sensors can be used to recognise air gestures and hover manipulations An array of proximity sensing elements can replace vision camera or depth camera based solutions for hand gesture detection nbsp The pulsing proximity sensor of a BlackBerry Leap source source source source source source source source Video of the pulsing proximity sensor of a BlackBerry LeapTypes of sensors editCapacitive Capacitive displacement sensor Doppler effect sensor based on doppler effect Inductive Magnetic including magnetic proximity fuse Optical Photoelectric Photocell reflective Laser rangefinder Passive such as charge coupled devices Passive thermal infrared Radar Reflection of ionizing radiation Sonar typically active or passive Ultrasonic sensor Fiber optics sensor Hall effect sensorApplications edit nbsp Proximity sensor installed on the front of an iPhone 5 next to the earpiece automatically turning off the touchscreen when the sensor comes within a predefined range of an object such as a human ear when using the handset Parking sensors systems mounted on car bumpers that sense distance to nearby cars for parking Inductive sensors Ground proximity warning system for aviation safety Vibration measurements of rotating shafts in machinery citation needed Top dead centre TDC camshaft sensor in reciprocating engines Sheet break sensing in paper machine Anti aircraft warfare Roller coasters Conveyor systems Beverage and food can making lines Mobile devices Touch screens that come in close proximity to the face 2 Attenuating radio power in close proximity to the body in order to reduce radiation exposure 3 Automatic faucetsSee also editMotion detector Occupancy sensor Range imaging Time of flight detectorReferences edit O Brien Daniel J 2021 03 22 A guide for incorporating e teaching of physics in a post COVID world American Journal of Physics 89 4 403 412 doi 10 1119 10 0002437 ISSN 0002 9505 S2CID 221139614 a b Proximity sensor on Android smartphones TheCodeArtist Phillips Jon Can a 100 iPad Case Improve 3G Data Power Lab Test Wired nbsp Wikimedia Commons has media related to Proximity sensors Retrieved from https en wikipedia org w index php title Proximity sensor amp oldid 1143978113, wikipedia, wiki, book, books, library,
