{"id":24033,"date":"2023-10-18T23:36:51","date_gmt":"2023-10-18T22:36:51","guid":{"rendered":"http:\/\/indolighting.com\/?p=24033"},"modified":"2026-09-29T20:15:19","modified_gmt":"2026-09-29T19:15:19","slug":"fotometrija-absoluta-vai-relativa","status":"publish","type":"post","link":"https:\/\/indolighting.com\/lv\/fotometrija-absoluta-vai-relativa\/","title":{"rendered":"Fotometrija: absol\u016bt\u0101 vai relat\u012bv\u0101?"},"content":{"rendered":"

Lawrence Baynham un Toby Penter apl\u016bko divas pieejas, k\u0101 ielu apgaismojuma ra\u017eot\u0101ji sniedz fotometriskos datus.<\/span><\/h4>\n

Projekt\u0113jot ielu apgaismojuma sist\u0113mu, fotometrisko datu kvalit\u0101tei un precizit\u0101tei ir \u0101rk\u0101rt\u012bgi liela noz\u012bme. J\u016bs dro\u0161i vien zin\u0101t, ka ra\u017eot\u0101ju datus var sniegt divos form\u0101tos: absol\u016bt\u0101 fotometrija un relat\u012bv\u0101 fotometrija. Bet kuru form\u0101tu izmantot? Vai viens ir prec\u012bz\u0101ks par otru?<\/strong><\/p>\n

\u012as\u0101 atbilde: n\u0113, abi dod vien\u0101dus rezult\u0101tus. Apl\u016bkosim abas pieejas s\u012bk\u0101k, lai saprastu, k\u0101p\u0113c t\u0101 ir.<\/p>\n

Relat\u012bv\u0101 fotometrija: elementi pa vienam<\/strong><\/h4>\n

Relat\u012bv\u0101s fotometrijas pamat\u0101 ir atsevi\u0161\u0137s gaismas avota (jeb \u201espuldzes\u201d) m\u0113r\u012bjums un p\u0113c tam visa gaismek\u013ca gaismas pl\u016bsmas m\u0113r\u012bjums. No tiem apr\u0113\u0137ina gaismek\u013ca lietder\u012bbas koeficientu (LOR) jeb optisko efektivit\u0101ti.<\/p>\n

Relat\u012bv\u0101s fotometrijas failos nor\u0101d\u012bta gan \u201espuldzes\u201d gaismas pl\u016bsma, gan gaismek\u013ca gaismas pl\u016bsma. \u0160\u012b pieeja pier\u0101d\u012bjusi sevi \u012bpa\u0161i labi spuld\u017eu tehnolo\u0123ij\u0101, kur spuldzi vispirms p\u0101rbauda atsevi\u0161\u0137i un p\u0113c tam, ievietotu korpus\u0101, p\u0101rbauda goniofotometr\u0101, lai noteiktu atstarot\u0101ju, p\u0101rsegu u. c. rad\u012btos zudumus. Tas noz\u012bm\u0113, ka, zinot gaismek\u013ca gaismas sadal\u012bjumu un spuldzes gaismas pl\u016bsmu, ir vienk\u0101r\u0161i saprast, k\u0101 spuldzes gaismas pl\u016bsmas palielin\u0101\u0161ana vai samazin\u0101\u0161ana ietekm\u0113 gaismek\u013ca gaismas pl\u016bsmu. \u0160\u012b iesp\u0113ja joproj\u0101m redzama fotometrijas programmat\u016br\u0101, kur lietot\u0101js var redz\u0113t avota \u201espuldzes l\u016bmenus\u201d (bez optiskajiem zudumiem) un p\u0113c tam \u201egaismek\u013ca l\u016bmenus\u201d, t. i., gaismas pl\u016bsmu p\u0113c optiskajiem zudumiem.<\/p>\n

INDO ar goniofotometru \u013coti prec\u012bzi m\u0113ra spuldzes l\u016bmenus (t. i., modu\u013ca gaismas pl\u016bsmu bez l\u0113cas) un visa gaismek\u013ca gaismas pl\u016bsmu.<\/p>\n

<\/h4>\n

Absol\u016bt\u0101 fotometrija: gaismeklis, viss gaismeklis un nekas cits k\u0101 gaismeklis<\/strong><\/h4>\n

Turpret\u012b absol\u016bt\u0101 fotometrija ir metode, kur\u0101 vienk\u0101r\u0161i m\u0113ra visu gaismekli un ieg\u016bst rezult\u0101tus tie\u0161i \u0161ai konfigur\u0101cijai.<\/p>\n

\"\"<\/a><\/p>\n

Absol\u016bt\u0101 fotometrija sniedz konkr\u0113ta gaismek\u013ca gaismas pl\u016bsmu, ko katru reizi izm\u0113ra goniofotometrs. Gaismas pl\u016bsma attiecas tikai uz p\u0101rbaud\u0101mo gaismekli. T\u0101 k\u0101 spuldzes l\u016bmenu un gaismek\u013ca l\u016bmenu j\u0113dzienu \u0161eit nav, absol\u016bt\u0101s fotometrijas failos LOR vienm\u0113r ir 100 %.<\/p>\n

K\u0101 \u0161\u012b failu form\u0101ta at\u0161\u0137ir\u012bba ietekm\u0113 apgaismojuma projekt\u0113\u0161anu?<\/strong><\/h4>\n

Paties\u012bb\u0101 t\u0101 projekt\u0113\u0161anu neietekm\u0113 nemaz. K\u0101p\u0113c? Gan absol\u016btajos, gan relat\u012bvajos failos gaismek\u013ca efektivit\u0101te tiek \u0146emta v\u0113r\u0101 autom\u0101tiski.<\/p>\n

Absol\u016btajos failos nor\u0101d\u012bta tikai viena gaismas pl\u016bsma, un, t\u0101 k\u0101 LOR = 100 %, t\u0101 ir gaismek\u013ca gaismas pl\u016bsma. Relat\u012bvaj\u0101 fail\u0101 nor\u0101d\u012bti spuldzes l\u016bmeni, un apr\u0113\u0137iniem autom\u0101tiski piem\u0113ro efektivit\u0101tes koeficientu. B\u016btisks princips, kam j\u0101izpild\u0101s, lai relat\u012bv\u0101 fotometrija b\u016btu der\u012bga: spuldzes gaismas pl\u016bsmas m\u0113rogo\u0161ana nedr\u012bkst ietekm\u0113t spuldzes fotometrisko sadal\u012bjumu. LED gaismek\u013ciem tas patie\u0161\u0101m t\u0101 ir, ja gaismas pl\u016bsmu palielina, palielinot LED str\u0101vu, bet t\u0101 nav, ja liel\u0101ku gaismas pl\u016bsmu pan\u0101k, pievienojot vair\u0101k LED. T\u0101d\u0101 gad\u012bjum\u0101 nepiecie\u0161ama jauna fotometrisk\u0101 test\u0113\u0161ana.<\/p>\n

T\u0101p\u0113c projekt\u0113\u0161anas programmat\u016bra viena un t\u0101 pa\u0161a gaismek\u013ca absol\u016btos un relat\u012bvos m\u0113r\u012bjumus apstr\u0101d\u0101 vien\u0101di attiec\u012bb\u0101 uz gaismas sadal\u012bjumu, gaismas pl\u016bsmu un jaudas pat\u0113ri\u0146u. Tas noz\u012bm\u0113, ka neatkar\u012bgi no t\u0101, vai izmantojat absol\u016bto vai relat\u012bvo fotometriju, rezult\u0101ti b\u016bs identiski.<\/p>\n

\"\"<\/a><\/p>\n

A att\u0113l\u0101 (augst\u0101k) par\u0101d\u012bts apr\u0113\u0137ina piem\u0113rs ar INDO CHANCERY fotometriju absol\u016btaj\u0101<\/span> form\u0101t\u0101.<\/span><\/strong><\/em><\/p>\n

\"\"<\/a><\/p>\n

B att\u0113l\u0101 (augst\u0101k) par\u0101d\u012bts tas pats apr\u0113\u0137ins ar INDO CHANCERY fotometriju relat\u012bvaj\u0101<\/span> form\u0101t\u0101. Iev\u0113rojiet, ka apr\u0113\u0137ina r\u0101d\u012bt\u0101ji un rezult\u0101ti nemain\u0101s.<\/strong><\/em><\/span><\/p>\n

Bet ko saka standarti?<\/strong><\/h4>\n

Ko standarti saka par da\u017e\u0101d\u0101m m\u0113r\u012b\u0161anas metod\u0113m? IES LM-79-08 k\u0101 standarta test\u0113\u0161anas metodi nosaka absol\u016bto metodi, savuk\u0101rt IES LM-80-08 un IES LM-82-12 abos izmanto relat\u012bvo metodi. IES TM-21-11 ar\u012b izmanto relat\u012bv\u0101 form\u0101ta datus no LM-80 un ekstrapol\u0113 tos, lai apr\u0113\u0137in\u0101tu gaismek\u013ca kalpo\u0161anas laiku. Gaismek\u013ci j\u0101test\u0113 fotometriski saska\u0146\u0101 ar LM-79, ta\u010du citi standarti prasa cit\u0101du test\u0113\u0161anu.<\/p>\n

Secin\u0101jums<\/strong><\/h4>\n

Da\u017ei var ieteikt ne tikai to, ka gaismek\u013cu m\u0113r\u012b\u0161anai j\u0101izmanto absol\u016bt\u0101 metode, bet ar\u012b to, ka tam pa\u0161am gaismeklim, kas darbojas ar maz\u0101ku jaudu, nepiecie\u0161ams atsevi\u0161\u0137s absol\u016btais tests. Tom\u0113r, ja LED skaits un izvietojums nemain\u0101s, nemain\u0101s ar\u012b fotometriskais sadal\u012bjums.<\/p>\n

\u0160aj\u0101 gad\u012bjum\u0101 relat\u012bv\u0101 fotometrija ir izmaksu zi\u0146\u0101 efekt\u012bv\u0101ks un \u0113rt\u0101k lietojams form\u0101ts, jo \u012bpa\u0161i t\u0101p\u0113c, ka t\u0101 \u013cauj \u0101tri m\u0113rogot apgaismojuma projektus. Aptum\u0161o\u0161anas kontekst\u0101, kad LED tiek aptum\u0161oti, apgaismojuma projekt\u0101 j\u0101\u0146em v\u0113r\u0101 tikai samazin\u0101t\u0101 gaismas pl\u016bsma.<\/p>\n

Ja viena un t\u0101 pa\u0161a gaismek\u013ca da\u017e\u0101diem gaismas pl\u016bsmas l\u012bme\u0146iem tiek sniegti atsevi\u0161\u0137i absol\u016bt\u0101s fotometrijas faili, tas noz\u012bm\u0113, ka projekt\u0113t\u0101jam katru reizi, izskatot aptum\u0161o\u0161anas re\u017e\u012bmu, b\u016btu j\u0101iel\u0101d\u0113 jauns fotometriskais sadal\u012bjums. Tas atkal rada nevajadz\u012bgu papildu darbu un izmaksas, kam vienk\u0101r\u0161i nav j\u0113gas.<\/p>\n

Lai izprastu fotometriskos datus, vispirms j\u0101sazin\u0101s ar ra\u017eot\u0101jiem: j\u0101noskaidro, k\u0101da veida fotometrija tiek sniegta, k\u0101 t\u0101 test\u0113ta un k\u0101p\u0113c test\u0113ta tie\u0161i t\u0101. Da\u017ei var teikt, ka viens form\u0101ts ir izdev\u012bg\u0101ks par otru un j\u0101izmanto tikai tas. Ta\u010du, k\u0101 redzat, paties\u012bbai nemaz nav j\u0101b\u016bt tik absol\u016btai!<\/p>\n

Avoti:<\/p>\n

https:\/\/www.lightingreality.com\/<\/a><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Lawrence Baynham un Toby Penter apl\u016bko divas pieejas, k\u0101 ielu apgaismojuma ra\u017eot\u0101ji sniedz fotometriskos datus. Projekt\u0113jot ielu apgaismojuma sist\u0113mu, fotometrisko datu kvalit\u0101tei un precizit\u0101tei ir \u0101rk\u0101rt\u012bgi liela noz\u012bme. J\u016bs dro\u0161i vien zin\u0101t, ka ra\u017eot\u0101ju datus var sniegt divos form\u0101tos: absol\u016bt\u0101 fotometrija un relat\u012bv\u0101 fotometrija. Bet kuru form\u0101tu izmantot? Vai viens ir prec\u012bz\u0101ks par otru? \u012as\u0101 […]<\/p>\n","protected":false},"author":6,"featured_media":8957,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[129],"tags":[131],"class_list":["post-24033","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-exterior-lighting"],"_links":{"self":[{"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/posts\/24033","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/comments?post=24033"}],"version-history":[{"count":1,"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/posts\/24033\/revisions"}],"predecessor-version":[{"id":24034,"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/posts\/24033\/revisions\/24034"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/media\/8957"}],"wp:attachment":[{"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/media?parent=24033"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/categories?post=24033"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/indolighting.com\/lv\/wp-json\/wp\/v2\/tags?post=24033"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}