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Conceptual through-beam system to detect unauthorized access to a secure door. If the beam is interrupted, the detector triggers an alarm. A 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 receiver.
DLP technology is used in DLP front projectors (standalone projection units for classrooms and business primarily), DLP rear projection television sets, and digital signs. It was also used in about 85% of digital cinema projection as of around 2011, and in additive manufacturing as a light source in some printers to cure resins into solid 3D ...
Electric eye for a garage door opener. An electric eye is a photodetector used for detecting obstruction of a light beam. An example is the door safety system used on garage door openers that use a light transmitter and receiver at the bottom of the door to prevent closing if there is any obstruction in the way that breaks the light beam.
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.
Devices that rely on 3G, including old smartphones, some medical and security alarms, some car navigation and entertainment services, and old tablets and e-readers, stopped working by the end of 2022.
The Kinect sensor is used to calibrate the system and projection. The projector displays a system of gray patterns and the Kinect camera reads the size of the pattern across the projection in order to map the 3D environment. Once calibrated, the Kinect sensor is no longer needed for the IllumiRoom system and can be used for gaming. [3]
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