Zühlke based its approach on DECT, a real-time location system (RTLS) and HTML5. The first step involved implementing a location solution, including infrastructure monitoring and system status reporting.
A contemporary HTML5 single page application was used to provide the user interface, which was accessible from anywhere in the tunnel network. This ensures that all changes in position are recorded immediately and are visible in the user interface. The solution incorporates two different location models – coarse location at the tunnel segment level via DECT and a more precise location to approaching 1 metre accuracy using RTLS.
A clear visual display design helps users when making safety decisions. The system allows manual changes to relevant parameters to be made at any time. These changes are visible throughout the network, ensuring that the displayed view of the tunnel site is the same across all devices at all locations.