I'm considering adding break glass detection to our intruder alarm (the rear of our garden backs onto a public footpath). I'm reasoning that break glass would enable the system to detection intrusion that bit faster & possibly even deter entry into the building. (Detection inside the rooms is by dualtechs).
My question relates to the railway beyond the path - it carries mostly freight trains (coal) but does carry passenger trains at weekends. We get a fair amount of vibration from these trains, both low frequency from the heavy, slow coal trains & higher frequency from the faster passenger services.
I know that break glass works by detecting a particular signature of frequencies when the glass flexes & breaks - but would it/could it be conned by the vibrations from the trains & hence lead to false alarms?
My question relates to the railway beyond the path - it carries mostly freight trains (coal) but does carry passenger trains at weekends. We get a fair amount of vibration from these trains, both low frequency from the heavy, slow coal trains & higher frequency from the faster passenger services.
I know that break glass works by detecting a particular signature of frequencies when the glass flexes & breaks - but would it/could it be conned by the vibrations from the trains & hence lead to false alarms?
