A pet fence or unlimited limits is an electronic system designed to keep pets or other pets within a set of predetermined limits without the use of a physical barrier. A light electronic shock is delivered by an electronic collar if the warning sound is ignored. The system was first discovered and patented by Richard Peck in 1973 and held until 1990 by Invisible Fence Co., now known as Invisible Fence Inc.
Video Pet fence
Technology
Pet wearing a light collar that emits sound warning when the pet is approaching the limit. If warnings are ignored and pets cross the fence limit, the pet receives a light electric shock from the collar. Stimulus sent to pets can be applied more frequently and to larger strengths as the animal approaches the limit. Pets soon learn to avoid the invisible fence location, making it an effective virtual barrier. Animals (including humans) that do not wear collars are not affected by the specified limits.
Although called a "fence", this fence lacks a more appropriate limiting system called the electronic pet containment system. In cost analysis, they prove to be much cheaper and more aesthetic than physical fences. However, electronic fencing may not be effective if an animal crosses a temporary boundary in a state of joy. Pet fences are also used occasionally to contain livestock in circumstances where ordinary agricultural fences are uncomfortable or legal, as in British common lands.
Variant
In some pet fencing systems, there are wires (which may be buried) that emit radio signals to activate the receiver's collar. Other pet fences are wireless. Instead of using underground cables, they emit radio signals from central units, and activate when pets run outside a certain radius of the unit.
In another type, the collar uses a GPS signal to determine the proximity to a predefined "virtual fence", without the need for a physical installation at all. This system allows some additional flexibility, such as simpler "island" integration within the containment area, and easier to limit changes, although the boundary location is not as precise as possible due to GPS tolerance.
In addition, some collars have multiple settings, allowing owners to have a tone-emitting collar, or one of several static shock levels, with higher levels used to contain larger and stronger dogs.
Underground fence
An underground fence is an electronic system to prevent pets from leaving the yard. Wire buried around the area to be used is energized with coded signals. The surprise collar in pets receives these signals. When a pet approaches a buried fence, its collar makes a warning sound and then gives a harmless electric shock to the pet. One famous brand claims more than three million installations.
The first commercial underground enclosure system containing a pet home in a designated area was patented by Richard Peck, the owner of an Invisible Fence Company in 1974. Peck's basement was also the first indefinite detention system used to house cattle. In 1987 Peck successfully contained domestic goats to a restricted area using RF receiver collars intended for domestic dogs. Invisible Fence, Inc. currently owned by Radio Systems Corporation.
Maps Pet fence
Weakness
Underground fences can not exclude other animals from a predetermined limit. A dog inside an underground fence can still fall prey to larger dogs or coyotes, or even someone who wants to harass or steal animals. This type of fence has no warning mechanism for humans that may accidentally run on the perimeter, making them more vulnerable to dog bites. This type of detention is also not maintenance-free; this system can only operate if the battery in the animal collar works properly. Finally the underground fence is not effectively accepted by any animal. Some pets get too scared to get into their yard for fear of being shocked.
According to lawyer Kenneth Phillips, electronic fences have weaknesses because children or others may still be able to approach dogs or other animals bounded by such fences, and fences can cause limited animal behavior to perform better than I actually do. In addition, electronic fencing may not be effective if an animal crosses a temporary boundary in a state of joy.
See also
- Electrical fence
- Surprise collar
References
External links
- Pet Fence in HowStuffWorks
- The Pros and Cons of Invisible Fence
- Owner's Guide to Dog Fencing
Source of the article : Wikipedia
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