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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.
Another possible definition is a person who called to literally do a head count, presumably on behalf of either the town council or the house owners. This is rumoured to have occurred in Liverpool, in the years after the First World War. Mechanical tally counters can make such head counts easier, by removing the need to make any marks.
An axle counter detection point in the UK Axle counter for automatic railway crossing (Slovenia) An axle counter is a system used in railway signalling to detect the clear or occupied status of a section of track between two points. The system generally consists of a wheel sensor (one for each end of the section) and an evaluation unit for ...
Automatic heads succeeded manual heads, and differ from them in two main areas. Firstly, the automatic head will always display the drive mode when the vehicle is in motion, regardless of the setting of the mode switch. For this reason, the drive mode is no longer available to be selected by the mode switch.
Counter-IED equipment are created primarily for military and law enforcement. They are used for standoff detection of explosives and explosive precursor components and defeating the Improvised Explosive Devices (IEDs) devices themselves as part of a broader counter-terrorism , counter-insurgency , or law enforcement effort.
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Also, wires leave a trace all the way to the target, which could help find the source of the fire. Note that almost all (unless counter counter measures are installed) wire/radio link guided ATGMs can be jammed with electro-optical interference emitters such as "Shtora-1" on the T-90a. Examples
Several mechanical counters Mechanical counter wheels showing both sides. The bump on the wheel shown at the top engages the ratchet on the wheel below every turn. Early IBM tabulating machine using mechanical counters. Mechanical counters are counters built using mechanical components. They typically consist of a series of disks mounted on an ...