TunnelGuard is a covert system that uses seismic sensors, buried near the walls or foundations

of a structure, to detect tunneling attempts nearby protected assets.

TunnelGuard can recognize the seismic footprint of a variety of activities (digging, drilling, scraping,

jack-hammering, etc.), measure their intensity and duration. The proprietary detection algorithms

intelligently filter out non-threatening vibrations, from traffic on nearby roads and underground

subways, in order to minimize false alarms.

Markets

TunnelGuard is a robust and modular solution for detecting any tunneling and digging nearby any

infrastructure early enough before the actual breach occurs. It is typically used to protect bank

vaults, prisons, museums and other cultural heritage sites.

How it works

Basic sensing unit

The core of the protection system is the TunnelGuard Sensor Unit (TGSU), which consists of a

digital signal processor connected to four geophones by shielded cables. The digital signal

processor is housed in an IP66 water proof enclosure that can be installed near the protected

structure. The geophones are designed to be installed in variety types of soils.

System layout

A typical TunnelGuard system will consist of up to four TGSUs, connected to a Distribution Box – a

hub for power and communication. A computer collects the serial data from each TGSU trough the

Distribution Box. The computer typically hosts a dedicated SMS (Security Management System) application. Integration to a 3rd party SMS can be done through dry contacts.