So, I’ve been struggling for a while now to find any sort of source that goes in-depth on why and in what applications one would use each of the different types of glassbreaks:
- Passive piezo glassbreaks (piezo “window bugs” mounted on glass panes)
- Active glassbreaks (Vanderbilt/Acre makes them for the European market – they emit ultrasound into the pane and monitor the emitted signal to see if it’s still received – if the signal is lost, they go into alarm)
- And acoustic glassbreaks (which are mounted remotely from the window and pick up on the sound signature of breaking glass using a microphone – these are the most common type any more, as they’re the only ones available with UL listings for some reason?)
Do these different types differ meaningfully in their susceptibility to damage (from people rapping on a window for instance), probability of falsing from various factors (dropped keys, bells ringing, non-framed glass breaking, environmental effects such as lightning, and so on), or detection probability? Are there specific cases where one should be used over another, or is one technology considered superior enough to the others to be used for all-around usage no matter the application? Are there books/chapters or papers written on this topic that I should be reading to find out more?