Sweden’s longest bridge
Ølandsbroen is one of the longest bridges in Europe with its 6072 meters. The bridge was built for the Swedish Transport Administration (Trafikverket) in 1972 to connect Øland with Kalmar on the mainland. It was originally dimensioned for one lane in each direction, but with heavy traffic it has later been extended to two lanes. There are over 30,000 cars passing the bridge per day. The infrastructure therefore requires suitable technical installations.
In 2013, the Swedish Transport Administration had its first dynamically controlled lighting system and LED lighting was installed on the bridge. It turned out that the supplier failed to satisfy their needs. In 2016 Datek Light Control delivered a new system that met their safety requirements.
In close collaboration with the Swedish Transport Administration and the contractor One Nordic, we developed a special solution based on our existing IoT platform. The sensors measure traffic density and determine the level of light depending on it.
The system operates autonomously. All 412 luminaires are equipped with radio nodes, which via three gateways with SIM card for mobile communication continuously report the status to our cloud service.
In case of errors, the system automatically reports this to Trafikverket’s locally installed SCADA system. At the same time, detailed event logs and status parameters are reported to the cloud service. The contractor One Nordic can quickly make detailed troubleshooting and effectively take the necessary measures.