Connected City Lighting
This case is applicable only to city street lamps, and does not involve lighting for buildings bridges, tunnels, or highways.
Huawei Connected City Lighting Solution uses short- and long-distance communication technologies to control street lamps and promote the value-added service using lamp post resources, decreasing energy consumption and maintenance costs. Huawei Connected City Lighting Solution leverages the value-added service of lamp posts to promote the development of the smart city. The solution provides the following features: automated lighting adjustment, remote lighting control, proactive fault alarm, and anti-theft lamp cable. These features allow the solution to save energy, reduce emissions, offer emergency lighting, decrease maintenance costs, and evolve towards the smart city.
Currently, most cities control their street lamps in groups, with on-and-off switches but without dimmer switches. Along with the increased use of LED street lamps, some cities control street lamps individually to reduce energy consumption, detect faults, and maintain a power supply when the lamps are turned off (to supply power to other devices, for example, cameras). Currently, individual control mainly uses programmable logic controller (PLC), ZigBee or radio frequency (RF) connection. This control mode has the following problems:
• High costs caused by the lack of standards: Street lamps using different protocols such as PLC, ZigBee, IPv6 over Low-power wireless Personal Area Networks (6LowPan), RF and Telensa must be adapted for each other.
• High interference and low reliability: PLC communication is susceptible to deterioration of power distribution cables and electromagnetic interference. ZigBee, 6LowPan and RF signals may be blocked by trees and buildings and be subject to interference from Wi-Fi signals.
• High network construction and maintenance costs: Construction costs caused by fiber layout, and maintenance costs of transmission and network devices.
Huawei provides two solutions. One is the one-hop individual-control Narrow Band IoT (NB-IoT) solution, in which customers do not need to build networks themselves. Instead, the carrier builds and operates networks for them. The other solution is the two-hop individual-control AR+RF solution, in which customers need to build and operate networks by themselves.
NB-IoT Enables Smart Lighting
NB-IoT is included in the 3rd Generation Partnership Project (3GPP) standard, unifying access protocols. The Agent program on the IoT platform is loaded to compensate for differences between control interfaces of street lamps, unifying the control layer protocols.
NB-IoT features wide coverage and a large number of connections, satisfying the requirements for discrete distribution of street lamps to reduce the carrier's costs of installation and maintenance. Because NB-IoT uses a licensed spectrum, it eliminates network interference.
The IoT platform provides basic connection management, data management, and device management capabilities for Huawei Connected City Lighting Solution applications while enabling flexible and rapid deployment through an open standard interface.
AR Router Enables Smart Lighting
The solution integrates the 6LowPAN module, supports more mesh nodes, and reduces the number of gateways. It supports one-click mesh network configuration and allows mesh nodes to rapidly access the network, reducing maintenance costs.
The solution uses the carrier's 2G, 3G, and 4G networks, eliminating network interference. It uses the AR to open Application Programming Interfaces (APIs), which allows users to develop local applications on the AR, facilitating local O&M tasks, such as controlling street lamps, setting parameters, and querying faults, logs and lamp condition. The AR can also connect to the IoT platform to unify management of gateway data.
Users can manage ARs at the platform layer. The platform layer also provides open APIs, allowing customized development of street lamp applications.
Cooperating with the Czech ESL Company, Huawei deploys the two-hop individual-control AR+RF solution to upgrade old street lamps, helping the Czech Republic reduce their energy consumption by 80%.