Acoustic sensors
Acoustic working principle
— sensors that monitor ambient sounds during operation and give an alarm when suspicious noise is detected.This principle of operation is found exclusively in break sensors (see "Intended use"). Breaking glass produces a very distinctive sound (bang, then ringing), and even relatively simple electronics can distinguish this sound from extraneous noise. At the same time, a whole set of sound samples from glasses of different types and thicknesses is often entered into the sensor’s memory, and the most advanced models are able to respond to other suspicious noises, such as the grinding of a glass cutter.
Compared to contact break sensors, acoustic ones are much more convenient — they can be installed almost anywhere in the room, and one sensor is able to cover all the windows in the room (or even in several neighboring rooms). True, such devices are more expensive than contact ones.
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