IR Emitter LED 5mm Mai Bayyanawa - Girman 5mm Dia - Ƙarfin Wutar Gaba 1.8V - Ƙarfin Radiant 4.81mW/sr - Takardar Bayanin Fasaha ta Hausa

1. Bayanin Samfur

Wannan takarda ta yi cikakken bayani game da ƙayyadaddun ƙaramin fitilar LED infrared (IR) mai ƙarfi wanda aka sanya a cikin fakitin filastik mai bayyanawa. Na'urar ita ce fitilar da ake kallo ta ƙarshe wacce aka tsara don aikace-aikacen da ke buƙatar hasken infrared mai dogaro. Babban aikinta shi ne canza wutar lantarki zuwa hasken infrared, galibi don amfani a cikin tsarin tsinkaya, gano abubuwa, da sadarwa inda ake haɗa ta tare da mai gano hoto mai dacewa.

2. Bincike Mai zurfi na Sigogi na Fasaha

2.1 Madaidaicin Iyaka

An tsara na'urar don yin aiki cikin aminci a cikin ƙayyadaddun iyakokin muhalli da na lantarki. Wuce waɗannan ƙayyadaddun na iya haifar da lalacewa na dindindin.

• Rushewar Wutar Lantarki:150 mW. Wannan shine matsakaicin adadin wutar lantarki da na'urar za ta iya fitarwa a matsayin zafi a kowane yanayi na aiki.
• Matsakaicin Ƙarfin Gaba:2 A. Wannan shine matsakaicin ƙarfin bugun da aka yarda, wanda aka ƙayyade a ƙarƙashin sharuɗɗan bugun 300 a kowace daƙiƙa tare da faɗin bugun na mikrosekond 10. Ya fi girma sosai fiye da ƙimar ci gaba, yana ba da damar fitar da haske mai ƙarfi na ɗan gajeren lokaci.
• Ci gaba da Ƙarfin Gaba:100 mA. Wannan shine matsakaicin ƙarfin DC da za a iya amfani da shi ga LED har abada ba tare da haɗarin lalacewa ba.
• Ƙarfin Wutar Lantarki na Baya:5 V. Yin amfani da ƙarfin lantarki na baya wanda ya fi wannan ƙimar na iya rushe haɗin semiconductor.
• Kewayon Zafin Aiki:-40°C zuwa +85°C. An tabbatar da cewa na'urar za ta yi aiki a cikin wannan kewayon zafin muhalli.
• Kewayon Zafin Ajiya:-55°C zuwa +100°C. Ana iya adana na'urar ba tare da aiki ba a cikin wannan kewayon zafin mafi faɗi.
• Zafin Solder na Jagora:260°C na daƙiƙa 5, wanda aka auna 1.6mm daga jikin fakitin. Wannan yana bayyana juriyar yanayin zafi don hanyoyin haɗawa.

2.2 Halayen Lantarki & Na Gani

Ana auna waɗannan sigogi a daidaitaccen zafin muhalli na 25°C kuma suna bayyana aikin na'urar a ƙarƙashin yanayin aiki na yau da kullun. Yanayin gwaji don yawancin sigogi na gani shine ƙarfin gaba (I_F) na 20 mA.

• Ƙarfin Radiant na Budewa (E_e):0.64 mW/cm² (Min). Wannan yana auna ƙarfin haske a kowace yanki na yanki a budewar fitilar. Sigogi ne mai mahimmanci don aikace-aikacen da aka sanya fitilar kusa da mai gano.
• Ƙarfin Radiant (I_E):4.81 mW/sr (Min). Wannan shine ƙarfin haske da ake fitarwa a kowane kusurwar ƙarfi (steradian). Shi ne babban ma'auni na "haske" na fitowar LED a cikin bakan infrared kuma yana da mahimmanci don ƙididdige haske a nesa.
• Matsakaicin Tsawon Tsawon Fitowa (λ_Peak):880 nm (Typ). Na'urar tana fitar da hasken infrared a kusa da wannan tsawon tsayi. Wannan yana cikin yankin kusa-da-infrared (NIR), wanda ba a iya gani da idon ɗan adam amma ana iya gano shi cikin sauƙi ta hanyar masu gano hoto na silicon.
• Rabin Faɗin Layin Bakan (Δλ):50 nm (Max). Wannan yana ƙayyade kewayon tsawon tsayi wanda ƙarfin gani da aka fitar ya kasance aƙalla rabin ƙimar kololuwar sa. Ƙimar 50 nm tana nuna faɗin fitowar bakan matsakaici, wanda ya zama ruwan dare ga LED na IR na yau da kullun.
• Ƙarfin Wutar Lantarki na Gaba (V_F):1.3 V (Min), 1.8 V (Max) a I_F=20mA. Wannan shine faɗuwar wutar lantarki a kan LED lokacin aiki. Yana da mahimmanci don ƙirar da'irar iyakancewa na yanzu.
• Ƙarfin Wutar Lantarki na Baya (I_R):100 µA (Max) a V_R=5V. Wannan shine ƙaramin ƙarfin lantarki na yoyo wanda ke gudana lokacin da aka sanya na'urar a baya.
• Kusurwar Dubawa (2θ_1/2):40° (Typ). Wannan shine cikakken kusurwar da ƙarfin haske ya faɗi zuwa rabin matsakaicin ƙimarsa (a kan-axis). Kusurwar 40° tana ba da katako mai faɗi, wanda ya dace da aikace-aikacen da ke buƙatar ɗaukar yanki mai faɗi.

3. Binciken Lanƙwasa na Aiki

Takardar bayanin tana ba da ɗimbin hotunan hali na na'urar a ƙarƙashin yanayi daban-daban.

3.1 Rarraba Bakan

Lanƙwasa fitowar bakan (Hoto na 1) yana nuna matsakaicin ƙarfin haske dangane da tsawon tsayi. Yana tabbatar da fitowar kololuwa a kusan 880 nm tare da lanƙwasa mai siffar kararrawa, yana raguwa a kowane gefe. Ana iya ƙididdige rabin faɗin ta hanyar gani daga wannan jadawali.

3.2 Ƙarfin Gaba vs. Ƙarfin Wutar Lantarki na Gaba

Lanƙwasa I-V (Hoto na 3) yana kwatanta alaƙar da ba ta layi ba tsakanin ƙarfin wutar lantarki na gaba da sakamakon ƙarfin lantarki. Yana nuna halayen kunna na yau da kullun na diode. Ƙayyadaddun V_Fkewayon a 20mA ana iya yin kwatance akan wannan lanƙwasa.

3.3 Matsakaicin Ƙarfin Radiant vs. Ƙarfin Gaba

Wannan lanƙwasa (Hoto na 5) yana nuna yadda ƙarfin fitowar gani ke ƙaruwa tare da ƙarfin tuƙi. Gabaɗaya yana layi a cikin babban kewayon amma yana iya nuna jikewa ko raguwar inganci a ƙarfin lantarki mai girma sosai. Wannan jadawalin yana da mahimmanci don tantance ƙarfin tuƙin da ake buƙata don cimma matakin fitarwa da ake so.

3.4 Matsakaicin Ƙarfin Radiant vs. Zafin Muhalli

Lanƙwasa dogaro da zafin jiki (Hoto na 4) yana nuna cewa ƙarfin fitarwa na LED yana raguwa yayin da zafin haɗin ya ƙaru. Wannan shine ainihin halayen tushen haske na semiconductor. Jadawalin yana ba masu ƙira damar rage ƙimar fitarwa da ake tsammani don yanayin aiki mai zafi.

3.5 Zanen Radiation

Tsarin radiation na polar (Hoto na 6) yana ba da hoton kusurwar dubawa. Yana zana matsakaicin ƙarfi dangane da kusurwa daga tsakiyar axis, yana nuna kusurwar rabin 40° inda ƙarfin ya faɗi zuwa 50%.

4. Bayanin Injiniya & Fakitin

4.1 Girman Fakitin

Na'urar tana amfani da daidaitaccen diamita na 5mm, mai kallon ƙarshe, fakitin filastik mai bayyanawa (wanda ake kira da fakitin T-1 3/4). Muhimman bayanan girma sun haɗa da:

• Duk girmansu ana bayar da su a cikin milimita tare da daidaitattun inci.
• Daidaitaccen juriya na ±0.25mm ya shafi sai dai idan an ƙayyade.
• Matsakaicin tsayin guduro a ƙarƙashin flange shine 1.5mm.
• Ana auna tazarar jagora a wurin da jagororin suka fita daga jikin fakitin.

Fakitin yana da bayyananne, yana ba da damar hasken infrared ya wuce tare da ɗanɗano kaɗan. Jagororin galibi an yi su ne da gawa na tagulla.

4.2 Gano Polarity

Don wannan salon fakitin, dogon jagora yawanci yana nuna anode (haɗin tabbatacce), kuma ɗan gajeren jagora yana nuna cathode (haɗin mara kyau). Bugu da ƙari, fakitin na iya samun wuri mai lebur a gefen gefen kusa da jagoran cathode. Dole ne a lura da polarity daidai don na'urar ta fitar da haske.

5. Jagororin Solder & Haɗawa

Matsakaicin iyaka don solder na jagora shine 260°C na tsawon daƙiƙa 5, wanda aka auna 1.6mm daga jikin fakitin. An yi nufin wannan ƙimar don hanyoyin solder na hannu ko solder na igiyar ruwa.

• Solder na Reflow:Duk da yake ba a ƙayyade shi a sarari don sake kunnawa ba, iyakar 260°C tana nuna cewa yana iya jure wasu bayanan sake kunnawa. Duk da haka, ana ba da shawarar sosai bayanin martaba tare da ƙaramin zafin jiki (misali, 245°C) da ƙayyadaddun ƙimar hawan don rage matsin lamba na zafi akan fakitin filastik da haɗin wayoyi na ciki.
• Gabaɗaya Tsare-tsare:Kauce wa matsin lamba na injiniya mai yawa akan jagororin. Kada ku lanƙwasa jagororin a tushen fakitin. Yi amfani da daidaitaccen zafin zafi yayin solder idan ya cancanta.
• Yanayin Ajiya:Ajiye a cikin busasshiyar muhalli, anti-static a cikin ƙayyadaddun kewayon zafin jiki (-55°C zuwa +100°C) don hana ɗaukar danshi da sauran lalacewa.

6. Shawarwari na Aikace-aikace

6.1 Yanayin Aikace-aikace na Yau da Kullun

Wannan fitilar IR ta dace da aikace-aikace daban-daban na gani, gami da:

• Gano Abubuwa & Tsinkaya:Ana amfani da su a cikin na'urori masu gano kusanci, ƙididdiga na abubuwa, da tsarin gano matakin, galibi ana haɗa su tare da phototransistor kamar jerin LTR-3208 da aka ambata don samar da mai katsewar gani ko mai gano haske.
• Tsarin Sarrafa Nesa:Yana aiki azaman mai watsawa a cikin sarrafa infrared na nesa don kayan lantarki na masu amfani.
• Haɗin Bayanan Gani:Yana ba da damar sadarwar bayanai ta serial mara waya, ɗan gajeren zango.
• Tsarin Tsaro:Ana amfani da su a cikin hasken infrared don kyamarori na dare ko a matsayin wani ɓangare na katakon gano kutsawa.

6.2 Abubuwan Ƙira

• Iyakancewa na Yanzu:LED na'urar ce mai tuƙi na yanzu. Koyaushe yi amfani da resistor mai iyakancewa na jeri ko da'irar direba mai ci gaba don hana wuce matsakaicin ƙarfin gaba na ci gaba, musamman tun da ƙarfin wutar lantarki na gaba yana da kewayon (1.3V-1.8V).
• Gudanar da Zafi:Duk da yake ƙarfin wutar lantarki yana da ƙasa, yin aiki a babban ƙarfin lantarki na ci gaba ko a cikin yanayin zafi mai girma zai rage fitarwa da tsawon rai. Tabbatar da isasshen iska idan ya cancanta.
• Daidaitawar Gani:Takardar bayanin ta lura cewa na'urar ta dace da injiniya da bakan ga takamaiman phototransistors. Yin amfani da mai gano da aka ba da shawarar yana tabbatar da mafi kyawun hankali a matsakaicin tsawon tsayi na 880nm da daidaitawar jiki a cikin ƙirar ƙira.
• Kariyar Da'ira:Yi la'akari da ƙara kariya daga ƙarfin wutar lantarki na baya ko fitarwa na electrostatic (ESD), tun da matsakaicin ƙarfin wutar lantarki na baya shine 5V kawai.

7. Kwatancen Fasaha & Bambance-bambance

Muhimman fasalulluka waɗanda ke bambanta wannan fitilar IR sun haɗa da:

• Zaɓaɓɓun Kewayon Ƙarfi:Ana bin na'urori ko zaɓe su don cika takamaiman ƙayyadaddun ƙarfin haske, suna tabbatar da daidaito a cikin samarwa.
• Babban Ƙarfin Fitowa:Matsakaicin ƙarfin haske na 4.81 mW/sr a 20mA yana gasa don daidaitaccen fakitin 5mm, yana ba da ingantaccen ƙarfin siginar.
• Faɗin Kusurwar Dubawa (40°):Yana ba da ɗaukar faɗi, wanda ke da fa'ida don tsinkayar kusanci da tsinkayar haske inda daidaitawa ba shi da mahimmanci.
• Fakitin Bayyananne:Ba kamar fakitin da aka yi launi ko watsawa ba, ruwan tabarau mai bayyanawa yana haɓaka fitowar haske na gaba kuma yana tsaka tsaki ga launin hasken da aka fitar, wanda ya dace da aikace-aikacen IR.
• Daidaita zuwa Jerin Mai Gano:Wannan yana sauƙaƙa ƙira da saye don tsarin da ke amfani da phototransistor ɗin da aka haɗa, yana tabbatar da dacewar gani da na injiniya.

8. Tambayoyin da ake yawan yi (Dangane da Sigogi na Fasaha)

8.1 Wane ƙimar resistor ya kamata in yi amfani da shi tare da samar da 5V?

Yin amfani da Dokar Ohm (R = (V_supply- V_F) / I_F) kuma ana ɗauka manufa I_Fna 20mA, ƙimar resistor ya dogara da ainihin V_F. Don ƙirar mafi munin yanayi wanda ke tabbatar da cewa ƙarfin lantarki ba zai taɓa wuce 20mA ba, yi amfani da mafi ƙarancin V_F(1.3V). R = (5V - 1.3V) / 0.02A = 185 Ohms. Mafi kusancin ƙimar daidaitaccen shine 180 Ohms. Wannan yana ba da matsakaicin ƙarfin lantarki na ~20.6mA, wanda yake da aminci. Ƙimar wutar lantarki: P = I²R = (0.02)² * 180 = 0.072W, don haka resistor na 1/8W ko 1/4W ya isa.

8.2 Shin zan iya tuƙa shi da fil ɗin microcontroller kai tsaye?

Yawanci, a'a. Yawancin filayen GPIO na microcontroller suna da iyakar samar da ƙarfin lantarki/ nutsewa na 20-40mA, wanda ke kan gefen wurin aikin wannan LED. Ko da a cikin iyaka, ƙarfin wutar lantarki na fil ɗin zai faɗi ƙarƙashin kaya, yana sa sarrafa ƙarfin lantarki ya zama mara daidaito. Ana ba da shawarar koyaushe a yi amfani da transistor (misali, NPN BJT ko N-channel MOSFET) azaman maɓalli wanda fil ɗin microcontroller ke tuƙa don sarrafa ƙarfin lantarki na LED da kansa.

8.3 Ta yaya zafin jiki ke shafar aiki?

Kamar yadda aka nuna a Hoto na 4, matsakaicin ƙarfin haske yana raguwa yayin da zafin muhalli ya ƙaru. A +85°C, fitarwa na iya zama kawai 60-80% na ƙimarsa a 25°C. Akasin haka, a ƙananan zafin jiki sosai, fitarwa na iya zama mafi girma. Dole ne a yi la'akari da wannan a cikin ƙididdigar hankali na tsarin, musamman don aikace-aikacen waje ko babban dogaro. Ƙarfin wutar lantarki na gaba (V_F) shima yana da ƙimar zafin jiki mara kyau, ma'ana yana raguwa kaɗan yayin da zafin jiki ya tashi.

8.4 Menene bambanci tsakanin Ƙarfin Radiant da Ƙarfin Radiant?

Ƙarfin Radiant (I_E, mW/sr)ma'auni ne na kusurwar ƙarfi—yana bayyana nawa ƙarfi ake fitarwa zuwa takamaiman shugabanci (kowace steradian). Ba shi da alaƙa da nisa.Ƙarfin Radiant na Budewa (E_e, mW/cm²)ma'auni ne na yanki na yawan ƙarfi—yana bayyana nawa ƙarfi ke wucewa ta yanki na yanki a budewar tushen. E_eya fi dacewa da aikace-aikacen kusa sosai inda mai gano yake ainihin a saman fitilar, yayin da I_Eana amfani da shi tare da dokar murabba'i na baya don ƙididdige haske a nesa.

9. Nazarin Shari'ar Ƙira & Amfani

Yanayi: Ƙirar Ƙididdigar Takarda don Firi.

Ana buƙatar na'urar gano mai katsewar gani don ƙidaya takardun da ke wucewa ta hanyar injin firi. Siffar U tana riƙe da fitilar IR a gefe ɗaya kuma daidaitaccen phototransistor a ɗayan. Lokacin da babu takarda, hasken IR daga fitilar ya buga mai gano kai tsaye, yana sa shi ya gudanar. Lokacin da takarda ta wuce ta cikin rata, ta toshe katakon IR, yana sa gudanar da mai gano ya ragu.

Dalilin Zaɓin Bangaren:

• An zaɓi wannan fitilar IR sabodababban ƙarfin haske (4.81 mW/sr min), yana tabbatar da cewa ƙaƙƙarfan siginar zai iya isa ga mai gano ko da daidaitawar maƙallan ba ta da kyau ko kuma idan ƙura ta taru.
• Dafaɗin kusurwar dubawa na 40°yana da fa'ida saboda yana ba da juriya don ƙananan kuskuren injiniya tsakanin fitilar da mai gano da ke cikin hannaye daban-daban na maƙallan U.
• Dadaidaitawar bakan ga phototransistor na LTR-3208yana tabbatar da cewa mai gano yana da mafi hankali a tsawon tsayi na 880nm da ake fitarwa, yana haɓaka rabo na siginar zuwa amo.
• Dafakitin bayyananneya dace sosai saboda ba ya rage hasken IR ba dole ba.

Aiwatar da Da'ira:Ana tuƙa fitilar ta hanyar tushen ƙarfin lantarki na 20mA na yau da kullun don daidaitaccen fitarwa. An haɗa phototransistor a cikin tsarin gama-emitter tare da resistor mai ja. Mai kwatanta ko fil ɗin ADC na microcontroller yana lura da ƙarfin wutar lantarki a mai tattara phototransistor. Takardar da ke wucewa tana haifar da canjin ƙarfin wutar lantarki, wanda firmware na microcontroller ke ƙidaya.

10. Gabatarwar Ka'idar Aiki

Infrared Light Emitting Diode (IR LED) diode ne na semiconductor p-n junction. Lokacin da aka yi amfani da ƙarfin wutar lantarki na gaba wanda ya wuce yuwuwar haɗin gwiwa, electrons daga yankin n ana shigar da su a cikin haɗin gwiwa zuwa yankin p, kuma ramuka daga yankin p ana shigar da su zuwa yankin n. Waɗannan masu ɗaukar ƙananan ƙungiyoyi (electrons a cikin yankin p, ramuka a cikin yankin n) sun sake haɗuwa tare da masu ɗaukar mafi yawa. A cikin kayan semiconductor na bandgap kai tsaye kamar Gallium Arsenide (GaAs) ko mahaɗan makamancin haka da ake amfani da su don fitar da IR, babban ɓangare na waɗannan sake haɗuwa shinemai haskakawa.

Yayin sake haɗuwa mai haskakawa, ana fitar da makamashin haɗin gwiwar electron-ramu a cikin nau'in photon. Tsawon tsayi (λ) na wannan photon an ƙaddara shi ta hanyar makamashin bandgap (E_g) na kayan semiconductor, bisa ga lissafin λ = hc / E_g, inda h shine Planck's constant kuma c shine saurin haske. Don fitowar kololuwa a 880 nm, daidaitaccen makamashin bandgap shine kusan 1.41 eV. Fakitin epoxy mai bayyanawa yana ɗauke da guntu na semiconductor, yana ba da kariya ta injiniya, kuma yana aiki azaman ruwan tabarau don siffanta tsarin radiation na hasken da aka fitar.

11. Trends na Fasaha

Duk da yake ainihin ka'idar IR LEDs ta kasance barga, wasu trends suna tasiri ci gabansu da aikace-aikace:

• Ƙara Ƙarfi & Ingantacciyar Aiki:Ci gaban kimiyyar kayan aiki da ƙirar guntu na ci gaba yana haifar da na'urori tare da mafi girman ƙarfin haske da ingancin wutar lantarki (ƙarfin gani / wutar lantarki a ciki), yana ba da damar ko dai sigina masu haske ko ƙarancin amfani da wutar lantarki.
• Ƙananan Girma:Akwai babban yanayi zuwa fakitin na'urar da aka sanya a saman (SMD) (misali, 0805, 0603, ma'aunin guntu) don haɗawa ta atomatik, rage girma da farashi. Fakitin 5mm na rami ya kasance sananne don ƙirar ƙira, amfani da ilimi, da aikace-aikacen da ke buƙatar mafi girman fitarwa na na'ura ɗaya ko sauƙin haɗawa da hannu.
• Ƙwarewar Tsawon Tsayi:Bayan na kowa 850-940 nm LEDs, ana ƙara amfani da takamaiman tsawon tsayi don takamaiman aikace-aikace, kamar 810nm don oximetry na bugun jini na likita ko 1450nm don LiDAR mai aminci ga ido.
• Haɗin kai:Ana ƙara haɗa masu fitarwa tare da direbobi, masu daidaitawa, kuma wani lokacin har ma da masu gano cikin ƙira ɗaya ko ICs, yana sauƙaƙe ƙirar tsarin don sadarwar bayanai da tsinkaya.
• Faɗaɗa Aikace-aikace:Yaduwar Intanet na Abubuwa (IoT), na'urorin sawa, LiDAR na mota, da ci gaba da tsinkayar halittu (misali, gane fuska, gano jijiyoyi) yana ci gaba da haifar da buƙatar amintattun masu fitar da IR masu arha tare da takamaiman halaye na aiki.