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Invisible Fence Inc. (commonly referred to as Invisible Fence Brand) is a company that designs radio pet fences for cats and dogs. Manufactured and distributed by Radio System Corporation, the company sells wireless and fenceless systems that were first introduced in 1973. [ 1 ]
An example of detector applied on a perimeter fence is the mems accelerometer. The advantages of having a perimeter intrusion detection system are various, and of great importance, for example we obtain a remarkable capacity to analyse the information produced by each sensor, without the need to increase the resources at the centre.
Other pet fences are wireless. Rather than using an underground wire, they emit a radio signal from a central unit, and activate when the pet travels beyond a certain radius from the unit. In another type, the collar uses GPS signals to determine proximity to a predetermined "virtual fence", without the need for any physical installation at all.
Two geofences defined in a GPS application. A geofence is a virtual "perimeter" or "fence" around a given geographic feature. [1] A geofence can be dynamically generated (as in a radius around a point location) or match a predefined set of boundaries (such as school zones or neighborhood boundaries).
In 1998 Magal acquired Perimeter Products Inc., a manufacturer of fence-mounted sensors and bistatic microwave sensors, where it remained as a separate entity. In 2003 Senstar, via Perimeter Products Inc., acquired Dominion Wireless, a manufacturer of personal duress systems, [ 20 ] with all three organizations being consolidated in 2009 at the ...
In the context of a perimeter fence, [10] MEMS sensors can be attached to the fenced area. These sensors could detect changes in pressure or vibration caused by someone attempting to climb over or cut through the fence. The sensors then transmit an alert to a security system, allowing security personnel to respond quickly to the attempted breach.
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