20.500.12556/DKUM-82533 Možnosti zmanjševanja svetlobnega onesnaževanja z uporabo cestnih svetilk s spremenljivim spektrom svetlobe diplomsko delo Possibilities of reducing light pollution with use of street lamps with variable light spectrum Ljudje so začeli uporabljati umetne vire svetlobe, da so si podaljšali dan, ko ponoči ni zadoščala svetloba lune in zvezd. Sprva je bil ta vir ogenj, nato so začeli uporabljati razne sveče, oljne svetilke in čez nekaj stoletij tudi prve žarnice. Od takrat nas svetlobni viri spremljajo pri vsakdanjih opravilih. Svetloba na človeka ne vpliva le vizualno, temveč regulira tudi delovanje našega telesa. Z izločanjem hormonov kot so kortizol, melatonin, dopamin in serotonin se naš cirkadiani ritem uravnava glede na svetlobo, ki jo zaznavajo naši fotoreceptorji. Vsi hormoni vplivajo na naše razpoloženje, zdravje, sposobnosti in počutje. Svetlobni viri imajo raznorazne barve bele svetlobe, ki različno vplivajo na izločanje omenjenih hormonov. Barvo bele svetlobe opišemo z barvno temperaturo, od tople do hladne. Raznorazne barve bele svetlobe imajo raznovrstno spektralno sestavo in posledično različno učinkujejo na ljudi, živali in okolico. Z uporabo svetlobnih virov z nižjimi barvnimi temperaturami (toplejše barve svetlobe) razbremenimo okolico in zmanjšamo svetlobno onesnaževanje. V diplomskem delu je obravnavana razsvetljava cestnega odseka s svetilkami s spremenljivim barvnim spektrom. Narejena je primerjava izračuna in meritve z luksmetrom. V barvnem trikotniku sta na Planckovi krivulji prikazani barvni koordinati obeh barv in v grafu spektra svetlobnega vira z različnimi barvami bele svetlobe. Diplomsko delo vključuje anketo o posameznikovih preferencah svetlobe pri različnih opravilih in v prometu. Rezultati potrjujejo, da so ljudje osveščeni o svetlobnem onesnaževanju, vendar kljub temu pogosteje izbirajo svetlobne vire hladnejših barv. People began to use artificial light sources to extend their day when there was not enough light and stars at night. At first, this source was fire and later came various candles, oil lamps. The first light bulbs came into use after a few centuries.. Since then, light sources accompany us in everyday tasks. Light doesn't affect humans only visually but it also regulates our body's functions. Throught the secretion of hormones such as cortisol, melatonin, dopamine and serotonin, our circadian rhythm is regulated according to the light detected by our photoreceptors. The above mentioned hormones affect our mood, health, abilities and well-being. The color of white light is described with color temperature, from warm to cool. Different colors of white light have different spectral compositions and have different effects on hormonal secretion, people, animals and the environment. By using light sources with warmer colors of light, i.e. with lower color temperatures, we relieve the environment and reduce light pollution. This thesis includes an example of an outdoor projec t- a road which is lit with lamps with a variable color spectrum. A comparison was made between the simulation and measurements with a luxmeter. In the color triangle, the color coordiantes of the two colors are shown on Planck's curve and in the spectrum graph of the light source with different colors of white light. The thesis also includes a survey on people's preferences for different colors of white light in various tasks and in traffic. It has been shown that people are aware of light pollution but still prefer cooler colored light sources. svetlobno onesnaževanje spremenljiv spekter svetlobe zunanja razsvetljava barvna temperatura light pollution variable light spectrum outdoor lighting color temperature true true false [L. Plevnik] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2022-08-24 06:35:42 2022-11-07 13:59:23 2022-11-23 03:06:14 0000-00-00 00:00:00 2022 0 Maribor 0 Maribor 1 spletni vir (1 datoteka PDF (XIV, 60 f.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 628.971:535.241.43(043.2) 130403331 VS_Plevnik_Luka_2022.zip VS_Plevnik_Luka_2022.zip 1 9F5D38026250C69E7519C953953DFDA3 c9a8f22ed652558984ea9e2cc6395fd303dd40a5a5e9c5e02c423a0a881400ec 488e9abb-236b-11ed-81ca-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=160666 2022.08.24_diplomsko_delo-Luka_Plevnik.pdf 2022.08.24_diplomsko_delo-Luka_Plevnik.pdf 1 5FDC393E70327B12DFD79BD70C17B8C3 f970fdc8e37014a24f72698476336fe02e3661d2baf4db557a4282780854d890 e2607da7-5e9b-11ed-bc5b-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=164288 Fakulteta za elektrotehniko, računalništvo in informatiko 0 0 0