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)
“... in love, barriers cannot be destroyed from the outside by the one to whom the cause despair, no matter what he does; and it is only when he is no longer concerned with them that, suddenly, as a result of work coming from elsewhere, accomplished within the one who did not love him, these barriers, formerly attacked without success, fall futilely.”
—Marcel Proust (1871–1922)