According to media reports, a wireless control network consisting of 15,000 lamps will turn the City of London into a "smart city."
In addition to lighting control (including dimming), the system also supports applications such as traffic and parking monitoring, occupancy sensing, environmental monitoring, and asset management.
It is reported that the platform is provided by Itron and Urban Control and is a set of open source networks based on the Wi-Sun Alliance mesh standard.
The system sends radio frequency signals to the nodes of each street light through a few access points. Each node has its own IP address and acts as a relay for every other node, thus forming a "mesh".
"Five years ago, the metering equipment was a headache, and we needed light reconnaissance aircraft to check for malfunctions. Now we are looking to add a range of innovative smart city applications," said Giles Radford, highway manager in London.
With the addition of a wireless control network, there is a better balance between light and dark: it meets both functional and aesthetic needs.
At the same time, there is a variable color temperature strategy. The illumination of the main road is 4000K, the illumination of the bypass is 3000K, and the illumination of traditional lamps and "emphasis areas" is 2700K. The dimming settings and lighting levels are adaptive and can be modified through interactive techniques.
Street lights also include pollution and air quality sensors, and car flow sensors for monitoring real-time traffic data.
To ensure the continuity of the strategy and the continued upgrading of lighting, the City of London has established a streetlight committee to carry out continuous upgrades and developments.