LTP-3862JS Takardar Bayanin Fasaha na Nuni na LED Mai Lambobi Biyu, Mai Lamba 17, Tsawon Lamba 0.3-inch (7.62mm) - Haske Mai Raɗaɗi (587nm) - Ƙarfin Wutar Gaba 2.6V

1. Bayyani Game da Samfur

LTP-3862JS babban tsarin nuni ne mai lambobi biyu, mai lamba, wanda aka ƙera don aikace-aikacen da ke buƙatar karanta haruffa masu haske da haske. Babban aikinsa shine nuna haruffa masu lamba (haruffa da lambobi) ta amfani da tsarin lamba 17 a kowace lamba, yana ba da sassauci mafi girma fiye da daidaitattun nunin lamba 7. Babban fa'idar wannan na'urar yana cikin amfani da ci-gaban guntu na AS-AlInGaP (Aluminum Indium Gallium Phosphide) LED da aka girma akan tushen GaAs, waɗanda aka sani da ingantaccen inganci da ingantaccen launi a cikin bakan raɗaɗi. Nuni yana da fuska baƙi tare da sassan fari, yana ba da babban bambanci don mafi kyawun karantawa. Kasuwarsa ta haɗa da na'urorin sarrafa masana'antu, kayan aikin gwaji da aunawa, na'urorin likita, kayan aiki, da kowane tsarin da aka haɗa inda ake buƙatar nuni mai lamba, mai aminci, da haske.

2. Bincike Mai Zurfi na Sigogi na Fasaha

2.1 Halaye na Haske da Gani

Aikin gani shine tsakiyar aikin nuni. A daidaitaccen ƙarfin gwaji na 1mA a kowane ɓangare, matsakaicin ƙarfin haske (Iv) yana kewayo daga mafi ƙanƙanta na 320 µcd zuwa ƙimar al'ada na 800 µcd. Wannan babban haske yana tabbatar da ganuwa a cikin yanayi daban-daban na hasken yanayi. Na'urar tana fitar da hasken raɗaɗi tare da babban tsayin raƙuman ruwa (λd) na 587 nanometers (nm) da mafi girman tsayin raƙuman fitarwa (λp) na 588 nm, wanda aka auna a ƙarfin tuƙi na 20mA. Rabin faɗin layin bakan (Δλ) shine 15 nm, yana nuna launin raɗaɗi mai tsafta da cikakke. Muhimmin sigogi don daidaiton nuni shine ma'aunin daidaiton ƙarfin haske, wanda aka ƙayyade a 2:1 matsakaici. Wannan yana nufin cewa bambancin haske tsakanin mafi haske da mafi duhun ɓangare a ƙarƙashin yanayi ɗaya ba zai wuce sau biyu ba, yana ba da gudummawa ga daidaitaccen bayyanar gani a duk haruffa.

2.2 Sigogi na Lantarki da Zafi

Halayen lantarki suna ayyana iyakokin aiki da buƙatun wutar lantarki. Matsakaicin matsakaicin ƙididdiga ya saita iyakokin don aiki mai aminci: ɓarnar wutar lantarki a kowane ɓangare shine 70 mW, mafi girman ƙarfin gaba a kowane ɓangare (a 1kHz, aikin aiki 10%) shine 60 mA, kuma ci gaba da ƙarfin gaba a kowane ɓangare shine 25 mA a 25°C. Wannan ƙarfin yana raguwa a layi daya a 0.33 mA a kowace digiri Celsius sama da 25°C, wannan muhimmin abu ne don sarrafa zafi a cikin ƙirar aikace-aikace. Matsakaicin ƙarfin wutar baya a kowane ɓangare shine 5V. A ƙarƙashin yanayin aiki na yau da kullun (I_F=20mA), ƙarfin wutar gaba (V_F) a kowane ɓangare yana kewayo daga 2.0V zuwa 2.6V. Ƙarfin baya (I_R) shine matsakaicin 100 µA a cikakken ƙarfin wutar baya na 5V. An ƙididdige na'urar don kewayon zafin aiki da ajiya daga -35°C zuwa +85°C, yana sa ya dace da yanayi mai yawa.

3. Tsarin Rarrabawa da Rarrabuwa

Takardar bayanin ta bayyana cewa na'urorin "An Rarrabe su don Ƙarfin Haske." Wannan yana nuna cewa an rarraba na'urorin LTP-3862JS bisa ga ƙimar hasken da aka auna a daidaitaccen yanayin gwaji. Wannan tsarin rarrabawar yana tabbatar da cewa abokan ciniki suna karɓar nunin da ke da daidaitaccen matakin haske. Duk da yake ba a cika bayyana takamaiman lambobin rarrabawa ko kewayon ƙarfin haske a cikin wannan ɓangaren ba, rarrabawar yau da kullun don irin waɗannan nunin ya haɗa da rarraba su zuwa nau'ikan ƙarfin haske daban-daban (misali, daidaitaccen haske, haske mai ƙarfi). Masu ƙira ya kamata su tuntubi cikakken takardun rarrabawa na masana'anta don zaɓar daidaitaccen matakin don takamaiman buƙatunsu na bambanci da ganuwa, musamman lokacin da ake amfani da nunin da yawa a cikin samfur ɗaya.

4. Bincike na Lanƙwasa Aiki

Takardar bayanin tana nuni zuwa "Lanƙwasan Halaye na Lantarki / Gani na Yau da Kullun," waɗanda ke da mahimmanci don aikin ƙira mai zurfi. Ko da yake ba a ba da takamaiman jadawali a cikin rubutun ba, waɗannan lanƙwasan yawanci sun haɗa da:
Ƙarfin Gaba vs. Ƙarfin Wutar Gaba (Lanƙwasa I-V):Wannan jadawalin yana nuna alaƙar da ke tsakanin ƙarfin da ke gudana ta wani ɓangaren LED da ƙarfin wutar da ke kan shi. Ba layi daya bane, kuma lanƙwasa yana taimaka wa masu ƙira su zaɓi daidaitaccen ƙimar resistor mai iyakancewa ƙarfi don cimma hasken da ake so yayin da suke cikin ƙimar lantarki.
Ƙarfin Haske vs. Ƙarfin Gaba:Wannan lanƙwasa yana kwatanta yadda fitowar haske ke ƙaruwa tare da ƙarfin tuƙi. Gabaɗaya layi daya ne a cikin kewayon amma zai cika a manyan ƙarfi. Wannan bayanin yana da mahimmanci don ƙirar dusar ƙanƙara ta hanyar sarrafa faɗin bugun jini (PWM).
Ƙarfin Haske vs. Yanayin Yanayi:Wannan jadawalin yana nuna yadda fitowar haske ke raguwa yayin da zafin haɗuwa na LED ke ƙaruwa. Fahimtar wannan raguwar ƙarfi yana da mahimmanci don aikace-aikacen da ke aiki a manyan yanayin zafi don tabbatar da cewa nuni ya kasance mai isasshen haske.

5. Bayanin Injiniya da Kunshin

LTP-3862JS kunshin nuni ne ta hanyar rami. Jadawalin "Girman Kunshin" da aka bayar (cikakkun bayanai a millimita) yana da mahimmanci don shimfidar PCB (Allon Da'irar da aka Buga). Nuni yana da fil 20 da aka jera a cikin layuka biyu. Zanen girma ya haɗa da tsawon gabaɗaya, faɗi, da tsayin kunshin, tazarar tsakanin fil (pitch), nisan tsakanin layukan fil, da farantin zama. An ba da izini don duk girma ±0.25 mm sai dai idan an faɗi akasin haka. An ayyana fil a fili, tare da fil 4 da 10 suna aiki azaman anode gama-gari don Lamba 1 da Lamba 2, bi da bi. Duk sauran fil (ban da fil 14, wanda ba Haɗin ba) sune cathode don takamaiman sassa (A har zuwa U, DP). Bayanin "Rt. Hand Decimal" a cikin bayanin ɓangaren yana nuna haɗa maki goma na hannun dama, wanda ake sarrafa shi ta hanyar filin cathode DP.

6. Jagororin Solder da Haɗawa

Takardar bayanin tana ba da takamaiman yanayin solder don hana lalata abubuwan LED yayin haɗawa. Yanayin da aka ba da shawarar shine solder a 260°C na matsakaicin dakika 3, tare da sharadin cewa wannan ya shafi maki 1/16 inch (kusan 1.59 mm) a ƙasa da farantin zama na nuni. Wannan daidaitaccen jagora ne na solder ko solder da hannu da aka yi niyya don iyakance zafin da aka canza zuwa guntu na LED mai hankali da gidan filastik. Don hanyoyin sake kunnawa solder, ya kamata a yi amfani da man solder mai dacewa da bayanin martaba wanda ba zai wuce matsakaicin zafin ajiya na 85°C na jikin na'urar ba. Daidaitaccen sarrafawa don guje wa fitar da wutar lantarki (ESD) shima ana nufinsa, kamar yadda yake tare da duk na'urorin semiconductor.

7. Da'irar Ciki da Haɗin Fil

"Zanen Da'irar Ciki" da teburin "Haɗin Fil" sune tushe don fahimtar yadda ake tuƙi nuni. LTP-3862JS yana amfani datsarin anode gama-gari mai yawaWannan yana nufin cewa duk anodes na sassa don Lamba 1 an haɗa su tare zuwa fil 4, kuma duk anodes don Lamba 2 an haɗa su zuwa fil 10. An fitar da cathode na kowane ɓangare (misali, ɓangaren A, B, C) zuwa fil daban kuma ana raba shi tsakanin lambobi biyu. Don haskaka takamaiman ɓangare akan takamaiman lamba, mai ƙira dole ne:
1. Aiwatar da ƙarfin wutar lantarki mai kyau (ta hanyar resistor mai iyakancewa ƙarfi) zuwa filin anode gama-gari na lambar da ake so (4 ko 10).
2. Zubar da ƙarfi zuwa ƙasa ta hanyar filin cathode da ya dace da ɓangaren da ake so.
Wannan dabarar haɗawa tana ba da damar sarrafa sassa 34 (17 a kowace lamba) tare da fil 20 kawai, yana rage adadin filin I/O da ake buƙata daga microcontroller mai tuƙi sosai. Lokacin sauyawa tsakanin lambobi biyu dole ne ya yi sauri sosai don guje wa ƙyalli mai gani, yawanci sama da 60 Hz.

8. Shawarwarin Aikace-aikace da Abubuwan Ƙira

8.1 Yanayin Aikace-aikace na Yau da Kullun

Wannan nuni ya dace da kowane tsarin da aka haɗa da ke buƙatar karantawa mai lamba biyu, mai ƙarami. Aikace-aikacen gama gari sun haɗa da: mitocin lantarki na lamba da na manne, ƙididdiga na mitoci, masu sarrafa tsari (nuna saiti ko ƙimomi), na'urorin wutar lantarki, nunin yanayin kayan aikin sadarwa, kayan aikin bincike na mota, da kayan aikin dakin gwaje-gwaje.

8.2 Abubuwan Ƙira Masu Muhimmanci

• Iyakancewa Ƙarfi:Resistors na iyakancewa ƙarfi na waje wajibi ne ga kowane layin cathode ko layin anode gama-gari don hana wuce matsakaicin ci gaba da ƙarfin gaba da kuma saita hasken da ake so. Ana ƙididdige ƙimar resistor ta amfani da R = (V_wadata- V_F) / I_F.
• Da'irar Tuƙi Mai Yawa:Ana buƙatar microcontroller tare da isassun fil ɗin I/O ko IC mai tuƙi na waje (kamar tuƙi na nunin LED na musamman ko mai rikodin motsi tare da fitarwa mai ƙarfi) don sarrafa haɗawa.
• Gudanar da Zafi:A cikin yanayi mai zafi ko lokacin tuƙi a manyan ƙarfi, tabbatar da cewa ɓarnar wutar lantarki a kowane ɓangare bai wuce 70mW ba. Yi la'akari da lanƙwasa raguwar ƙarfi don ƙarfin gaba.
• Kusurwar Dubawa:Siffar "Kusurwar Duba Mai Faɗi" tana da amfani, amma ya kamata a ɗora PCB don daidaita mafi kyawun alkiblar nuni tare da layin gani na yau da kullun na mai amfani na ƙarshe.

9. Kwatancen Fasaha da Bambance-bambance

LTP-3862JS ya bambanta kansa ta hanyar siffofi masu mahimmanci da yawa. Idan aka kwatanta da tsohuwar fasaha kamar daidaitattun LED na GaAsP ko GaP, tsarin kayan AlInGaP yana ba da ingantaccen inganci na haske sosai, yana haifar da nunin masu haske a ƙananan ƙarfi. Tsarin lamba 17 yana ba da damar lamba ta gaskiya, sabanin nunin lamba 7 waɗanda ke da iyaka a cikin haruffan da za su iya wakilta a fili. Fuska baƙi tare da sassan fari yana haɓaka ma'auni na bambanci, yana inganta karantawa a cikin hasken yanayi mai haske idan aka kwatanta da nunin da ke da fuska mai launin toka ko bayyananne. Ƙirar anode gama-gari mai yawa tana ba da daidaito mai kyau tsakanin rage adadin fil da rikitarwar tuƙi, yana mai da shi mafi inganci fiye da tsarin tuƙi na tsaye (ba mai yawa ba) wanda zai buƙaci ƙarin fil ɗin I/O.

10. Tambayoyin da Ake Yawan Yi (Bisa Sigogi na Fasaha)

Q: Ta yaya zan iya ƙididdige ƙimar resistor don wani ɓangare?
A: Yi amfani da Dokar Ohm: R = (V_CC- V_F) / I_F. Don wadata 5V, V na yau da kullun_Fna 2.3V, da kuma I da ake so_Fna 10mA: R = (5 - 2.3) / 0.01 = 270 Ohms. Koyaushe yi amfani da matsakaicin V_Fdaga takardar bayanin (2.6V) don ƙira mai ra'ayin mazan jiya don tabbatar da cewa ƙarfin bai wuce iyaka ba.

Q: Zan iya tuƙa wannan nuni tare da tushen ƙarfi na dindindin maimakon resistor?
A: Eh, tushen ƙarfi na dindindin hanya ce mai kyau don tuƙi LED kamar yadda yake tabbatar da daidaitaccen haske ba tare da la'akari da ƙananan bambance-bambance a cikin V ba_Ftsakanin sassa ko tare da zafin jiki. Yawancin ana amfani dashi a cikin ƙira masu ƙwarewa.

Q: Me "anode gama-gari mai yawa" ke nufi ga software na?
A: Dole ne software ɗin ku ya canza cikin sauri tsakanin kunna Lamba 1 da Lamba 2. Yayin da anode na Lamba 1 ke aiki, kuna saita ƙirar cathode don sassan da kuke son haskaka akan Lamba 1. Sa'an nan, kuna canzawa zuwa anode na Lamba 2 kuma kuna saita ƙirar cathode don Lamba 2. Dole ne wannan zagayowar ya maimaita cikin sauri don ƙirar hoto mai dorewa (>>60Hz).

Q: An ba da ƙarfin haske a 1mA, amma ina so in tuƙa shi a 20mA. Yaya haske zai yi?
A: Hasken LED yana kusan layi daya tare da ƙarfi a cikin kewayon. Tuƙi a 20mA zai iya haifar da kusan sau 20 na ƙarfin haske na yanayin gwaji na 1mA, amma dole ne ku tuntubi I_Vvs. I_Flanƙwasa don daidaito kuma tabbatar da cewa ba ku wuce matsakaicin matsakaicin ƙididdiga ba.

11. Misalin Ƙira da Amfani na Aiki

Yi la'akari da ƙira mai sauƙi na nunin mitar wutar lantarki mai lamba biyu. Microcontroller tare da mai canza dijital zuwa analog (ADC) yana karanta wutar lantarki. Software ɗin yana canza wannan ƙimar zuwa lambobi goma biyu (misali, "12"). Yana amfani da teburin nema don fassara kowane lamba (0-9) zuwa daidaitaccen ƙirar cathode don sassa 17 don samar da wannan lamba. Microcontroller ɗin yana amfani da fil ɗin I/O guda biyu a matsayin layin zaɓin lamba (an haɗa su zuwa anodes gama-gari ta hanyar transistors, kamar yadda fil ɗin MCU mai yiwuwa ba zai iya samar da isasshen ƙarfi ba) kuma yana amfani da har zuwa 17 wasu fil ɗin I/O (ko ƙarami tare da masu rikodin motsi na waje) don sarrafa cathode na ɓangaren. Lambar ta shiga cikin madauki wanda: yana kunna transistor don anode lamba goma, yana fitar da ƙirar cathode don lambar "1\