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Passive infrared sensor

A passive infrared sensor (PIR sensor) is an electronic device that measures infrared (IR) radiation emitted by objects in its field of view. They are most commonly used in motion detectors, including security alarms and automatic lighting systems.

PIR-based motion detector, Overview & Operating principles

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Operating principles

PIR-based motion detector

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Passive infrared sensor

Nodes36
Edges35
Triples4
Avg. degree1.94
Density0.055556
Components1

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pir sensor infrared used energy detector motion radiation window also lighting temperature objects relay circuit may view device alarm sensors

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SubjectPredicateObjectConfidenceSrc
a relay or a data loggerinstance ofIn order to implement this output signal for a practical triggering of a load0.80text
or an alarminstance ofIn order to implement this output signal for a practical triggering of a load0.80text
the differential signal is rectified using a bridge rectifierinstance ofIn order to implement this output signal for a practical triggering of a load0.80text
fed to a transistorized relay driver circuitinstance ofIn order to implement this output signal for a practical triggering of a load0.80text

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