What are the turnstiles?
Turnstile is a mechanism that allows you to have control over input and output. Most turnstiles consist of a horizontal shoulder that reaches from the post and allows people to go through, since a specific condition has been met. It may be necessary to submit legitimate identification or make a payment for the passage through the turnstile. Other similar structures maintain the number of individuals that go through. Turnstiles provide security, inspection of crowds, prevent loss and acceptance control and/or access.
places that commonly use turnstiles include entertainment parks, public transport, airports and sports events. The design of the turnstile allows you to go through only one person at a time. The initial function of the turnstile was for farmers, but not animals to be able to go through. Another use of the turnstile is to maintain operation for pedestrians in one direction.
Most modern turnstiles are mechanical, allowing you to turn the arm one direction, not the other. Now there are many turnstiles electronicCH and some work with optical sensors that can scan leaves or badges. If the sensor does not recognize the ticket or badge, the sound of the sound alarm sounds.
turnstiles come in different sizes, from waist height to full height that are used for situations requiring maximum security. Variations include a string model of a strict arm, which is also good for conditions requiring higher security. The traditional three -bit model is good for tight spaces and even portable turnstiles.
For those on wheelchairs or those who have strollers or delivery trolleys, there is a variation of a turnstile with a fall of the shoulder. The US disability Act requires accommodation to be provided for those who have physical challenges to gain entry, which traditional turnstile generally does not allow. Some modern turnstiles look almost like a revode, with pure panels unlike traditionMetal arms.
Other methods used for direct operation and control of crowds include columns or vertical stripes such as those used to indicate the lane inside the banking lobby. These posts are often connected by chains or ropes and some have retractable belts.