Microwave Barriers
The operation of a microwave barrier is very simple. This type of device produces an electromagnetic beam using high frequency waves that pass from the transmitter to the receiver, creating an invisible but sensitive wall of protection. When the receiver detects a difference of condition within the beam (and hence a possible intrusion), the system begins a detailed analysis of the situation. If the system considers the signal a real intrusion, it provides an alarm signal that can be treated in analog or digital form.
- pros:low cost, easy to install, invisible perimeter barrier, unknown perimeter limits to the intruder.
- cons:extremely sensitive to weather as rain, snow and fog for example would cause the sensors to stop working, need sterile perimeter line because trees, bushes or anything that blocks the beam would cause false alarm or lack of detection.
Read more about this topic: Burglar Alarm, Sensor Types
Famous quotes containing the words microwave and/or barriers:
“The New Age? It’s just the old age stuck in a microwave oven for fifteen seconds.”
—James Randi (b. 1928)
“Emancipation should make it possible for woman to be human in the truest sense. Everything within her that craves assertion and activity should reach its fullest expression; all artificial barriers should be broken, and the road towards greater freedom cleared of every trace of centuries of submission and slavery.”
—Emma Goldman (1869–1940)