Showing papers on "Street light published in 2012"

Improving the energy efficiency of street lighting. A case in the South of Spain

Abstract: One of the objectives of the electricity market is to reduce energy demand, through efficient use. The street lighting sector is one of more consumption and less efficient. In recent years, many countries are promoting action plans to promote the reduction of energy consumption and pollutant gas. This paper analyzes the potential savings from outdoor lighting installations. Also, the different lighting systems and technologies are described, and the measures to be taken for energy savings, increasing the quality of the street light. Finally, a technical-economic solution is raised to renovate inefficient installations, through the incorporation of Energy Service Companies.

Street Light Monitoring System

Abstract: A street light monitoring and real time data management system and methodology for collecting information from geographical distributed locations or individual sensor nodes dedicated to individual street lights of a multi-light street light system.

System for controlling streetlight and remote controller thereof

Abstract: PURPOSE: A lighting pattern control system and remote control equipment of a street light are provided to enhance energy efficiency by separately controlling a main street light and a second street light. CONSTITUTION: A lighting pattern is set in main street lights(M1,M2,M3). The main street light transmits and receives a lighting control signal through local area wireless communications. Secondary street lights(N1-N7) are turned on by receiving the lighting control signal. The secondary street light transmits and receives the lighting control signal with a neighboring street light. A power supply supplies a driving power source. A GPS(Global Positioning System) receives a satellite signal from a satellite and creates and outputs time and location information. A moving object sensing sensor senses a moving object and outputs a moving object sensing signal.

Visualization and analysis of light pollution: a case study in hong kong

Abstract: . The effects of light pollution problems in metropolitan areas are investigated in this study. Areas of Hong Kong are used as the source of three typical study cases. One case represents the regional scale, a second represents the district scale, and a third represents the street scale. Two light pollution parameters, Night Sky Brightness (NSB) and Street Light Level (SLL), are the focus of the analyses. Light pollution visualization approaches in relation to the different scales include various light pollution maps. They provide straightforward presentations of the light pollution situations in the study areas. The relationship between light pollution and several social-economic factors such as land use, household income, and types of outdoor lighting in the scale areas given, are examined. Results show that: (1) Land use may be one factor affecting light pollution in the regional scale; (2) A relatively strong correlation exists between light pollution and household income in the district scale; (3) The heaviest light pollution in the street scale is created by spotlights and also the different types of lighting from shops. The impact of the latter is in relation to the shop profile and size.

A Simplified Life Cycle Assessment applied to a coupled Solar and Eolic street light

Abstract: The idea of a street light which would be independent of the power grid and which would be in the same time ‘ecological’ is to be demonstrated. To answer this question, the environmental impacts of a Solar and Eolic street light called SOLEOL are quantified using a simplified Life Cycle Assessment (i.e. using simplified inputs for the photovoltaic system and the generator). The chosen Functional Unit is: ‘the lighting during 25 years with LED lamps with a power of about 2500 lumens’. The data corresponding to the Life Cycle Inventory are divided into the classical four phases of the Life Cycle Assessment (LCA) methodology. The environmental impacts are valuated and aggregated; then a comparison is made with a conventional street light. It is shown that the SOLEOL and the conventional street lights are generally at the same level, except for the non-renewable energy consumption where the SOLEOL is better for the environment, and for aquatic toxicity where the SOLEOL street light has a greater impact. This study shows that a street light said to be environmentally friendly could have in fact a greater impact on the environment, but in our case, and even if no optimization has been made on it, the SOLEOL street light is honorably placed relatively to conventional street lights.

Led lighting system and method

Abstract: PURPOSE: An LED lighting system and a method thereof are provided to easily achieve bit synchronization by using the wireless telecommunication of a Manchester coding scheme. CONSTITUTION: A vehicle detector(7) senses vehicles approaching a preset section on a road(5). A street lighting controller controls is the lighting and flash of a lamp installed at each street light. Street lighting controllers are installed at each street light. A controlling device(2) controls the lighting and flash of street lights while being wirelessly communicated with the street lighting controllers if receiving vehicle perception data from the vehicle detector.

Street lighting management system using smart phone

Abstract: PURPOSE: A street light management system with a smart phone is provided to use a smart phone instead of high-priced terminal for managing the street lights. CONSTITUTION: A sensor unit(200) collects information of a street light(100). A wireless communication module(300) transmits the collected information from the sensor unit. A management server(400) stores the information and a GPS location of the street light. A smart phone(500) determines a state of the street light with the information of the management server. The smart phone displays a location of a street light with a problem. The information of the management server has the same identification number with the information of the street light within a fixed distance.

A feasibility analysis of retrofitting existing roadway lighting infrastructure with LED technology

Abstract: LED technology has advanced towards use in high intensity lighting purposes. LED luminaires have a significantly longer expected lifetime than traditional highintensity discharge lighting systems. Due to these recent improvements in LED technology, there is a growing need for a comprehensive method to analyze the applicability of LED luminaires for use on major routes and roadways. This research investigates the acceptability of LED luminaires for use on major roadways through a feasibility analysis using data collected at various LED street light testing sites. Nine distinct LED luminaires were analyzed in field testing. The field data was then analyzed and compared to manufacturer’s claims, or values produced by the manufacturer’s IES file. Sustainability was incorporated through an economic analysis, environmental impact analysis, and a stakeholder analysis. Each of the nine luminaires in the field feasibility study were also economically analyzed. An economic life cycle approach was used to analyze the economic requirements for each luminaire. The life cycle approach includes cradle to grave costs, including installation costs, operation and maintenance costs, and removal and disposal costs. A sensitivity analysis was also performed to identify the most critical variables within the life cycle analysis. The increased electrical efficiency provided by LED luminaires causes a decreased environmental impact through reductions in CO2 production and reduced water consumption. Social sustainability was analyzed through the discussions and interviews with the penultimate end users, state and local agencies. Plans for testing products for future implementation are also discussed.

A Study on Making Upward Lighting Ratio Regulation for Lighting Zone Based on the Light Distribution of Streetlight Site Survey

Abstract: There have been light pollution standards just for architectural lighting and sign in the "Light Pollution Abatement Law" so far. However, both of them regulate only one of the three main light pollution elements-"Glare". Therefore, it is imperative to do research on the other two light pollution elements-"Upward" and "Light Trespass" and make proper restriction. Subsequently, this study focuses on the upward light from the street light and suggests its analysis method. Eventually, this study aims to make viable management which is suitable for the nation and, in addition, to suggest appropriate level of restriction to "Light Pollution Abatement Law" by doing site survey.

The Design of Monitoring System for City Intelligent Street Lamp Based on GPRS-Internet Technology

Abstract: In view of the city lighting system management and the maintenance request, this article has developed one kind based on GPRS and Internet urban street light illumination intelligence control system, Design of the remote management plan which the street light monitors, this system plan effective solution real-time of street control , reliability, economy and other issues. Using an integrated control network terminal, the dynamic analysis of continuous lighting control, integrated advanced network access technology, Construction of super-layered structure monitoring system. Finally, the monitor terminal which designed to this article in the hardware aspect and the software aspect carries on the test, the test result had indicated that the monitor terminal each performance carried on the experiment, discovered that the system in the energy conservation aspect, has played the influential role.

가로등 배광의 실태조사를 통한 조명환경관리구역별 상향광속률 기준 마련을 위한 연구

Abstract: There have been light pollution standards just for architectural lighting and sign in the “Light Pollution Abatement Law” so far. However, both of them regulate only one of the three main light pollution elements-“Glare”. Therefore, it is imperative to do research on the other two light pollution elements-“Upward” and “Light Trespass” and make proper restriction. Subsequently, this study focuses on the upward light from the street light and suggests its analysis method. Eventually, this study aims to make viable management which is suitable for the nation and, in addition, to suggest appropriate level of restriction to “Light Pollution Abatement Law” by doing site survey.