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A people counter is an electronic device that is used to measure the number of people traversing a certain passage or entrance. Examples include simple manual clickers, smart-flooring technologies, infrared beams, thermal imaging systems, WiFi trackers and video counters using advanced machine learning algorithms.
At concerts, stadiums, etc., a person will stand by the door with a tally counter recording the number of people that enter. At amusement parks, the rides can only hold a certain number of people, so the operator may use a tally counter to keep track of the number of people who get on the ride. They are also used for traffic analysis ...
In most cases, an optical triangulation sensor is mounted near the top of the swinging door frame, inside a long extruded aluminum tube with an optical window facing the floor. An 880 nm LED light source emits a collimated, near-infrared light beam .
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Common applications include search and rescue, surveillance, and customer analytics (for example, people counters). Modern technologies proposed or deployed for human sensing include: [1] Acoustic sensors; Image recognition of human shapes; Infrared detectors; Pressure-sensitive floor tiles; Radar; Chemical sensors
A revolving door in Turkey (counter-clockwise rotation) A revolving door typically consists of three or four doors that hang on a central shaft and rotate around a vertical axis within a cylindrical enclosure. To use a revolving door, a person enters the enclosure between two of the doors and then moves continuously to the desired exit while ...
11. A memory phone can store photos with names and contact information. 12. Puzzles and activity books stimulate the brain and promote cognitive sharpness.. 13. Card games and board games ...
Tensions mounted over the following week as sit-in demonstrations spread to other cities and race riots broke out in nearby Chattanooga. [29] [30] On February 27, the Nashville student activists held a fourth sit-in at the Woolworths, McLellan's, and Walgreens stores. Crowds of white youths again gathered in the stores to taunt and harass the ...
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