Boom Barrier, automatic gate, vehicle detection system скачать в хорошем качестве

Boom Barrier, automatic gate, vehicle detection system

#boombarrier #automation #autogatesystem #malayalam www.unnistechvlog.com 8848240442 A boom barrier, also known as a boom gate,[1] is a bar, or pole pivoted to allow the boom to block vehicular or pedestrian access through a controlled point.[2] Typically, the tip of a boom gate rises in a vertical arc to a near vertical position. Boom gates, especially manually operated ones, are often counterweighted,[3] so the pole is easily tipped. Boom gates are often paired either end to end, or offset appropriately to block traffic in both directions. Some boom gates also have a second arm which hangs 300 to 400 mm below the upper arm when lowered, to increase approach visibility, and which hangs on links, so it lies flat with the main boom as the barrier is raised. Some barriers also feature a pivot roughly half way, where as the barrier is raised, the outermost half remains horizontal, with the barrier resembling an upside-down L (or gamma Γ) when raised.