Acoustic vs Shock: Which Glass Break Detector is Best?

Glass Break Detectors are specialised security sensors designed to detect the distinctive sounds and vibrations produced when glass is shattered. These devices serve as a crucial component of comprehensive security systems, offering an additional layer of protection for windows, glass doors, and other vulnerable glass surfaces.
By continuously monitoring for the characteristic sounds associated with broken glass, Glass Break Detectors provide an immediate alert to any attempted intrusion through glass, enabling prompt action by occupants or security personnel. This proactive approach significantly enhances overall security and deters potential intruders.

1. Sound-Based Detection (Acoustic Glass-Break Sensors)

Acoustic glass-break detectors, at their core, rely on sensitive microphones that carefully monitor for the distinctive sounds produced by shattering glass. These devices effectively capture and analyse these sounds, making them a highly effective solution for small rooms where a single, centrally placed sensor can adequately cover all windows.
The simplest acoustic detectors are expertly tuned to specific frequency ranges characteristic of breaking glass. More advanced models employ a sophisticated two-step detection process. Initially, the sensor is triggered when the sound intensity reaches a pre-defined threshold. Subsequently, the sensor meticulously analyses the captured sound, comparing it against a database of recorded glass-breaking sounds to identify statistical similarities.
Only when a strong match is found does the detector generate an alert. This two-step approach not only enhances accuracy but also significantly conserves battery life by allowing the sensor to enter a low-power sleep mode between detections. The Hikvision Wired Glass Break Detector DS-PDBG8-EG2 serves as an excellent example of this advanced technology.

2. Vibration-Based Detection (Shock Glass Break Sensors)

In contrast to acoustic glass break detectors, which rely on sound detection, shock glass break detectors operate by directly monitoring vibrations transmitted through the glass itself. These detectors are typically mounted directly onto the surface of the window or door.
An electrical wire is attached to the detector, which is designed to detect any minute vibrations or movements of the glass. This allows for the detection of various threats, including not only the shattering of glass but also attempts to physically impact or compromise the glass surface, such as forceful strikes or attempts to climb.
The detector's sensitivity level can be adjusted to suit the specific environment and application to ensure optimal performance and minimise false alarms. The Hikvision Wired Shock Detector DS-PDSK-P is an excellent example of this technology, providing reliable and effective protection against a wide range of glass-related threats.