Abstract
Public lighting represents a large part of the energy consumption of towns and cities. Efficient management of public lighting can entail significant energy savings. This work presents a smart system for managing public lighting networks based on wireless communication and the DALI protocol. Wireless communication entails significant economic savings, as there is no need to install new wiring and visual impacts and damage to the facades of historical buildings in city centers are avoided. The DALI protocol uses bidirectional communication with the ballast, which allows its status to be controlled and monitored at all times. The novelty of this work is that it tackles all aspects related to the management of public lighting: a standard protocol, DALI, was selected to control the ballast, a wireless node based on the IEEE 802.15.4 standard with a DALI interface was designed, a network layer that considers the topology of the lighting network has been developed, and lastly, some user-friendly applications for the control and maintenance of the system by the technical crews of the different towns and cities have been developed.
Highlights
Public lighting installations are important sources of energy consumption that are affected by certain factors, such as regulation and maintenance
This study considers communication systems such as those based on power line communication (PLC) and ZigBee, and describe and compare their features
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Summary
Public lighting installations are important sources of energy consumption that are affected by certain factors, such as regulation and maintenance. Several recommendations exist to reduce the electric energy consumption of public lighting [6] One of these actions is to control the on-off timespan of the lighting. A second action is to reduce light output (dimming) during hours with reduced traffic by reducing the voltage applied to each lamp, which reduces electric energy consumption Another proposed action is to use high-performance lamps and lighting devices. This consists of installing smart, adjustable electronic ballasts that are able to automatically detect electric failures and lamp problems; measure and send data, such as on the state of the lighting, the lighting level, the energy consumption, voltage, current, and power factor; and receive interruption and lighting control commands. The paper is organized as follows: Section 2 provides a short review of the state of the art in lighting control systems; Section 3 presents an overview on the architecture of the system; Section 4 describes the hardware and software implementation of the wireless node; Section 5 shows the results of some of the implemented tests and installations; and Section 6 provides conclusions
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