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Introduction It is indispensable that the evolution of the world has been accompanied with various technological developments to the extent that the world can longer do without them. There is always increasing need to make various changes to keep abreast with the demand of the society. As far as electronics is concerned, these developments are not disputable. The changing times have seen new materials discovered, and the application of such material to change the outlook of the environment has been enormous, needless to mention improved locking system of the door, safety and performance for sustainable development.
One pivotal area that technology has found a lot of applicability is that pertaining to application revolving doors fitted with motion sensors. It is worth noting currently there are a number of door available as options to architects whenever they wish to design commercial, educational or public buildings. The doors range includes both manual, automatic and both manual and automatic combined. One thing to content with is that the underlying needs are most likely the same for instance when considering ease of use, their effectiveness, or their safety for the user.
Revolving doors first appeared in the market in a New York Restaurant way back in 1899 though it is said that the idea was conceived by the Philadelphia residents about ten years earlier. Today, revolving doors are quite relevant hence widely used. Basically, the revolving doors are made of a number of three to four panels often referred to as leaves or wings. These panels the rotate around a vertical shaft upon which they are attached. As often is the case, the entire revolving door structure is enclosed in the cylindrical structure with panels being spaced in a manner that during normal operation, the door can never open and hence has no clear passage right from the street to the building for bypassing the panel.
Panels and the enclosure both incorporate glass for purposes of safety and for reasons of aesthetic. In this regard, the glass provides an allowance for people to observe others through the door and the serve to regulate movements. Most of the revolving door automatic version consists of a powered central shaft, as well as sensors used for purposes of stopping and starting the door in potential unsafe situations. Generally, there is the presence of speed control characteristics, which makes the doors to be folded back in a way to create a clear space in the opening for purposes of emergency, and for moving objects that are large in and out of the building.
The direction for revolving of the doors constricting the revolving door often differs with countries. For example, in the UK, the predominant movement of the revolving doors is said to be in the clockwise direction using a right hand side as an entry. In New Zealand and in Australia, this is in reverse. Since the 1940s fire that occurred in a night club, in which many lives were lost because of having one revolving door as means of exit, revolving doors were made to be collapsible. In most case, therefore, hinged doors of an equivalent capacity are often placed next to a revolving door with the other door assisting in case of disabled access.
The modern doors lock system, has been made to include an array of electronic components including sensors. This way, it is designed such that it can sense, decide and act accordingly (Arkalgud, 2005). In this regard, sensors, as used in this
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