False alarms of the contact glass-break detectors caused by the multi-chamber window

Abstract

The contact glass-break detector is very often marked as very unreliable and these models are not very popular in a security application. The aim of this article is to find out the bottleneck of the glass-break detectors and try to improve their functionality and reliability. The main function is based on the vibration caused by the impact on the glass panel and these vibrations are detected by the detector. However, the biggest issue is the absorption of the vibration by the glass panels and the plastic windows itself. This article should show the vibration transfer difference between the inner and outer glass panels in the multi-chamber window. This experiment should be done according to the current standardization by the two accelerometers on each side of the window. The results should be used for the further improvement of the design and reliability of the contact glass-break detectors on the market. © 2020 Danube Adria Association for Automation and Manufacturing, DAAAM. All rights reserved.