proximity sensor

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• Proximity sensor — A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact. A proximity sensor often emits an electromagnetic or electrostatic field, or a beam of electromagnetic radiation (infrared, for instance),… …   Wikipedia

• proximity fuze — ☆ proximity fuze n. an electronic fuze that detonates a bomb, missile, etc. when its sensor detects the target …   English World dictionary

• proximity fuze — a design for detonating a charge, as in a projectile, within a predesignated radius of a target. Also called variable time fuze, VT fuze. [1940 45] * * * also called  Vt Fuze, or Influence Fuze,         an explosive ignition device used in bombs …   Universalium

• proximity — noun closeness; the state of being near as in space, time, or relationship. The proximity of the heat source allowed it to be detected by the sensor. Syn: closeness, nearness See Also: approxim …   Wiktionary

• Position sensor — A position sensor is any device that enables position measurement. It can either be an absolute position sensor or a relative one (displacement sensor). Position sensors can be either linear or angular.Some position sensors available today: *… …   Wikipedia

• Magnetic proximity fuze — A Magnetic proximity fuze was patented by P.J. Eliomarkakis, (United States Patent US2434551 of January 13, 1948) [1] although similar devices had been in service for nearly a decade. It is a type of proximity fuze that initiates a detonator in a …   Wikipedia

• Inductive sensor — An inductive sensor is an electronic proximity sensor, which detects metallic objects without touching them. The sensor consists of an induction loop. Electric current generates a magnetic field, which collapses generating a current that falls… …   Wikipedia

• Photoelectric sensor — A photoelectric sensor, or photoeye, is a device used to detect the presence of an object by using a light transmitter, often infrared, and a photoelectric receiver. They are used extensively in industrial manufacturing.There are three different… …   Wikipedia

• Hall effect sensor — A Hall effect sensor is a transducer that varies its output voltage in response to changes in magnetic field. Hall sensors are used for proximity switching, positioning, speed detection, and current sensing applications.In its simplest form, the… …   Wikipedia

• Ground proximity warning system — (GPWS) is a system designed to alert pilots if their aircraft is in immediate danger of flying into the ground or an obstacle. Another common name for such a system is ground collision warning system (GCWS). Commercial aircraft The system… …   Wikipedia

• PSTF — • Proximity Sensor Test Facility ( > IEEE Standard Dictionary ) • Payload Spin Test Facility ( > IEEE Standard Dictionary ) …   Acronyms