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.
PIR sensors detect general movement, but do not give information on who or what moved. For that purpose, an imaging IR sensor is required.
PIR sensors are commonly called simply "PIR", or sometimes "PID", for "passive infrared detector". The term passive refers to the fact that PIR devices do not radiate energy for detection purposes. They work entirely by detecting infrared radiation (radiant heat) emitted by or reflected from objects.
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A passiveinfraredsensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are...
(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...
Infrared photography Ora, a 2011 3D film shot in HD thermography Passiveinfraredsensor Thermal imaging camera (firefighting) Thermal weapon sight Thermography...
Janesville, Wisconsin from 1992 to 2002. It has a passiveinfraredsensor, and a magnetic influence sensor which allow it to be used as a demolition munition...
light sensor. Infraredsensors detect infrared energy that is emitted by one’s body heat. When hands are placed in the proximity of the sensor, the infrared...
sub-components. The passiveinfrared (PIR) motion detector is one of the most common sensors found in household and small business environments. This sensor does not...
active near-infrared illumination allow people or animals to be observed without the observer being detected. Infrared astronomy uses sensor-equipped telescopes...
photoelectric sensor is a device used to determine the distance, absence, or presence of an object by using a light transmitter, often infrared, and a photoelectric...
improvising their own solutions that took advantage of how the passiveinfraredsensors on the IEDs reacted to heat signatures. One unnamed soldier proposed...
Infrared signature, as used by defense scientists and the military, is the appearance of objects to infraredsensors. An infrared signature depends on...
automatic mode of windscreen wipers. The rain sensor works on the principle of total internal reflection. An infrared light shone at a 45 degree angle on a clear...
sensor or CO2 sensor is an instrument for the measurement of carbon dioxide gas. The most common principles for CO2 sensors are infrared gas sensors (NDIR)...
Identifier, a field in a MPEG transport stream packet Passiveinfrared detector, a passiveinfraredsensor Payload Interface Document (used on space engineering...
Partners in Research, Canadian bio-medical research charity Passiveinfraredsensor, detects infrared emission Peak information rate, a burstable rate set on...
The F-35 equipped infrared search and track system AN/AAQ-37 Distributed Aperture System (DAS), which consists of six IR sensors around the aircraft...
source of radiation measured by passivesensors. Examples of passive remote sensors include film photography, infrared, charge-coupled devices, and radiometers...
infrared). The most common types are InSb, InGaAs, HgCdTe and QWIP FPA. The newest technologies use low-cost, uncooled microbolometers as FPA sensors...
Sensors are classified into three categories: passive, omnidirectional sensors; passive, narrow-beam sensors; and active sensors. Passivesensors sense...
Common sensors include combustible gas sensors, photoionization detectors, infrared point sensors, ultrasonic sensors, electrochemical gas sensors, and...
non-contact infrared thermometer is useful for measuring temperature under circumstances where thermocouples or other probe-type sensors cannot be used...
radio control, TV or IR remote controls, or remote arming with a passiveinfraredsensor, or via a pair of ordinary cell phones. EFPs can be deployed singly...
is sufficiently bright. Other designs also feature a built-in passiveinfraredsensor to detect motion, and only switch on when somebody is passing by...
active, passive or hybrid types. Autofocus systems rely on one or more sensors to determine correct focus. Some AF systems rely on a single sensor, while...
semiconductor image sensors, including the charge-coupled device (CCD) and later the active-pixel sensor (CMOS sensor). The passive-pixel sensor (PPS) was the...
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