Določevanje optimalne prostorske porazdelitve svetilnosti svetilke s svetlečimi diodami za uporabo v cestnih svetilkah

KACIN, MATIJA (author), Kobav, Matej Bernard (mentor)

Diplomsko delo obravnava področje svetlobne tehnike, ki se ukvarja z zunanjo in cestno razsvetljavo. Zunanja in cestna razsvetljava pripomoreta k večji varnosti, boljšemu počutju uporabnikov ter boljši vidljivosti v temi in slabi svetlobi. Najpogosteje se omenjena razsvetljava uporablja v nočnem času, pa tudi podnevi, kadar pride do različnih dejavnikov, zaradi katerih na zunanjih površinah ni dovolj svetlobe. Zaradi množičnega menjavanja stare cestne razsvetljave z novo LED razsvetljavo, kljub obstoječi cestni geometriji, nastane problem, saj nova razsvetljava ne izpolnjuje zahtev standardov in priporočil. Zato smo izdelali program, ki pri obstoječi poljubni cestni geometriji izdela datoteko svetilke z optimalno prostorsko porazdelitvijo svetilnosti za dane pogoje. Prvi del diplomskega dela opisuje osnovni namen cestne razsvetljave, pregled standardov ter predstavitev projektiranja. Ta del je namenjen razumevanju principa ustrezne cestne razsvetljave in njenega namena. Seznanimo se z osnovnimi parametri in pojmi cestne razsvetljave. V drugem delu je predstavljena fotometrija. Opisali smo s čim se fotometrija ukvarja ter navedli glavne fotometrične enote, ki se uporabljajo. Predstavljena je tabela prostorske porazdelitve svetilnosti, ki je osnova za datoteko svetilke, ki jo uporabimo v simulacijskih programih. Opisali smo tudi tri glavne fotometrične veličine, ki se jih uporablja v praksi. V tretjem delu smo opisali program za optimalno prostorsko porazdelitev svetilnosti, ki je predstavljen v štirih delih. V tem delu so opisani tudi postopki izračunov, ki smo jih uporabljali. V četrtem delu je podana simulacija s programom DIALux, ki primerja rezultate naše optimalne svetilke v danih pogojih ter konkretne cestne svetilke, ki se uporablja za cestno razsvetljavo. Rezultati so podani v tabelah in slikah.

• Language: Slovenian
• Keywords: LED razsvetljava, prostorska porazdelitev svetilnosti, fotometrija
• Work type: Undergraduate thesis
• Organization: FE - Faculty of Electrical Engineering
• Year: 2016
• PID: 20.500.12556/RUL-83214
• Publication date in RUL: 07.06.2016

Secondary language

• Language: English
• Title: Determination of the optimal spatial distribution of luminous intensity in luminaries with LEDs used for street lighting

Abstract

The thesis addresses the field of lighting technology, which is engaged in outdoor and street lighting. Outdoor and street lighting contribute to greater safety and better comfort of the users and better visibility in darkness and low light conditions. Street lighting is most often used in night time, but also during the day, when it comes to specific circumstances affecting lack of light on traffic area. Due to massive replacement process of the old street lighting with new LED lighting, despite the existing road geometry, the problem arises when the new lighting does not satisfy requirements of the standards and recommendations. Therfore, we made a program that creates optimal spatial light distribution for conditions of any existing road geometry. The first part of thesis describes the basic purpose of street lighting, overview of standards and presentation of the road lighting design. This part is dedicated to understand principle of proper street lighting. We're introduced with basic parameters and concepts of street lighting, which helps us understand street lighting basics. In the second part we described photometry and it's main photometric values which are most often used in practice. There is given table of the spatial distribution of light intensity which is used in the simulation programs. Third part describes our program for optimal spatial distribution of light intensity which includes four parts. There are also calculations of the parameters we have used. Fourth part of this thesis presents the simulation program that we have used, DIALux. We've made comparison of our optimal lamp and specific street lamp which is used in street lighting. Results are given in tables and charts.

• Keywords: LED lighting, spatial distribution of light intensity, photometry