Infrared Motion Detector
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a proposed project or thesis about PIR alarm system?
design projects from different schools or even in companies proposing a design using passive infrared (PiR) motion detector for alarm system
I think you may be a bit confused on the term "passive" all IR systems are passive. If you mean that you want a detector that needs no IR illumination that is different. The sensitivity of a IR detector is in direct relationship to the temperture of the sensor relative to the targets heat. Most home alarm systems have IR motion detectors in use. You can buy the sensors at any Radio Shack. These are not all that sensitive and are limited in range/distance. The more sensitive the more expensive. Ask the military. For even more sensitive IR detectors ask NASA or any of the big optical telescope operators/users. They use deep space or liquid nitrogen to cool there sensors to detect faint IR from very distant objects.
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Infrared Motion Sensing Light
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