Takardar Bayanin Fasaha ta LTP-747KD - Nunin LED Mai Tsarin Digo (Dot Matrix) - Tsayin Lamba 0.7 Inch (17.22mm) - Jan Hyper (650nm) - Ƙarfin Wutar Gaba 2.6V - Ragewar Wutar 40mW - Takardar Fasaha ta Turanci

1. Bayyani Game da Samfur

LTP-747KD wani na'ura ne mai nuna lamba ɗaya, wanda aka gina ta amfani da tsarin digo 5x7. Babban aikinsa shi ne samar da haruffa da alamomi masu bayyana ta hanyar kunna digogin LED daban-daban. Ana amfani da shi a wuraren da ake buƙatar nuna bayanai cikin ƙarami, amintacce, da haske, kamar a cikin na'urorin aunawa na masana'antu, allunan na'urorin lantarki na mabukaci, da kuma alamun sanarwa na asali.

Babban fa'idar wannan na'urar nunawa shine amfani da fasahar guntu na LED ta Aluminium Indium Gallium Phosphide (AlInGaP), musamman a cikin tsayin raƙuman ruwa na Hyper Red. Wannan tsarin kayan sanannen ne saboda ingantaccen aiki da kyakkyawan aiki a cikin yankunan haske na ja zuwa amber, wanda ke ba da gudummawa kai tsaye ga haske mai ƙarfi da bambanci da aka tallata na na'urar. Na'urar nunawa tana da fuskar launin toka tare da fararen digo, wanda ke haɓaka bambanci da karantawa a ƙarƙashin yanayin haske daban-daban. Sassa masu ci gaba da kama juna suna tabbatar da bayyanannen halayen haruffa cikin ƙwararru.

2. Ma'auni na Fasaha: Cikakken Bayani na Haƙiƙa

2.1 Halayen Gani

Aikin gani shine tsakiyar aikin na'urar nunawa. Matsakaicin Ƙarfin Hasken (Iv)an ƙayyade mafi ƙarancinsa a 630 µcd, ƙimar al'ada a 1238 µcd, kuma babu iyaka a ƙarƙashin yanayin gwaji na igiyar bugun wutar lantarki 32mA da cikakken aiki na 1/16. Wannan hanyar tuƙi ta bugun guda yawanci ana amfani da ita don nunawa masu yawa don cimma haske mai gani yayin da ake sarrafa wutar lantarki da zafi. Matsakaicin Tsayin Raƙuman Ruwa (λp)shi ne 650 nanometers (nm), yana sanya shi a cikin yankin hyper-red na bakan haske. Mafi Girman Tsayin Raƙuman Ruwa (λd)shi ne 639 nm. Yana da mahimmanci a lura da bambanci: matsakaicin tsayin raƙuman ruwa shine mafi girman ƙarfin bakan haske, yayin da mafi girman tsayin raƙuman ruwa shine hasashen launi ɗaya na idon ɗan adam. Rabin Faɗin Layin Bakan Hasken (Δλ)shi ne 20 nm, yana nuna tsaftar bakan haske ko yaduwar hasken da aka fitar a kusa da matsakaicin tsayin raƙuman ruwa. Matsakaicin Daidaitawar Ƙarfin Hasken (Iv-m)na 2:1 mafi girma an ƙayyade, ma'ana bambancin haske tsakanin mafi haske da mafi duhu a cikin na'ura bai kamata ya wuce wannan rabo ba, yana tabbatar da bayyananna iri ɗaya.

2.2 Halayen Wutar Lantarki

Ma'auni na wutar lantarki suna ayyana iyakokin aiki da yanayi don na'urar. Ƙarfin Wutar Gaba kowane digo (Vf)ya kasance daga 2.0V (mafi ƙanƙanta) zuwa 2.6V (mafi girma) a gwajin wutar lantarki na 20mA DC. Wannan shine raguwar wutar lantarki a kan LED lokacin da yake gudana. Ƙarfin Wutar Baya kowane digo (Ir)shi ne mafi girma na 100 µA lokacin da aka yi amfani da bambancin baya na 5V, yana nuna matakin ɗigon ruwa lokacin da LED ba a nufin ya kunna ba.

2.3 Cikakkun Ma'auni na Iyaka

Waɗannan ma'auni suna ayyana iyakokin damuwa waɗanda sama da su lalacewa na dindindin na iya faruwa. Ba don aikin al'ada ba ne. Manyan iyakoki sun haɗa da: Matsakaicin Ragewar Wutar Lantarki kowane digona 40mW, Matsakaicin Ƙarfin Wutar Gaba kowane digona 90mA, da kuma Matsakaicin Ƙarfin Wutar Gaba kowane digona 15mA a 25°C, yana raguwa a layi daya da 0.2 mA/°C sama da 25°C. Wannan raguwa yana da mahimmanci don sarrafa zafi. Mafi girma Ƙarfin Wutar Baya kowane digoshi ne 5V. Na'urar na iya aiki kuma ana adana ta a cikin Yankin Zafin Jikina -35°C zuwa +85°C. An ƙayyade yanayin zafin jiki na gida: 260°C na dakika 3 a 1/16 inch (kusan 1.6mm) a ƙasa da matakin wurin zama.

3. Bayanin Tsarin Rarraba

Takardar bayanin ta nuna cewa an rarraba na'urar don ƙarfin haske. Wannan yana nuna tsarin rarrabawa inda aka tsara raka'o'in da aka kera (bin) bisa ga ƙimar hasken da aka auna. Wannan yana ba masu ƙira damar zaɓar sassa masu daidaitattun matakan haske don aikace-aikacensu, yana tabbatar da daidaiton gani a cikin nunawa da yawa a cikin samfur. Duk da cewa ba a bayyana takamaiman lambobin kwandon a cikin wannan ɓangaren ba, kwanduna na yau da kullun za su haɗa LED tare da ƙimar ƙarfin haske iri ɗaya (misali, kewayon kusa da 1238 µcd na al'ada).

4. Bincike na Lanƙwasa Aiki

Takardar bayanin tana magana akan Lanƙwasan Halayen Wutar Lantarki/Haske na Al'ada. Ko da yake ba a ba da takamaiman jadawali a cikin rubutun ba, irin waɗannan lanƙwasa a cikin takardun bayanin LED yawanci sun haɗa da:

• Ƙarfin Wutar Gaba da Ƙarfin Wutar Gaba (Lanƙwasa I-V): Yana nuna alaƙar da ba ta dace ba, mai mahimmanci don ƙira na'urar iyakance wutar lantarki.
• Ƙarfin Hasken da Ƙarfin Wutar Gaba: Yana nuna yadda fitar da haske ke ƙaruwa tare da wutar lantarki, yawanci a cikin yanayin ƙasa da layi a manyan wutar lantarki saboda dumama.
• Ƙarfin Hasken da Zafin Yanayi: Yana nuna raguwar fitar da haske yayin da zafin jiki ya tashi, wani muhimmin abu don ƙirar zafi.
• Rarraba Bakan Hasken: Wani jadawali na ƙarfin dangi da tsayin raƙuman ruwa, yana nuna matsakaicin tsayin raƙuman ruwa da mafi girma da faɗin bakan haske a gani.

Waɗannan lanƙwasa suna da mahimmanci don fahimtar halayen na'urar a ƙarƙashin yanayin da ba daidai ba da kuma don inganta yanayin tuƙi don inganci da tsawon rai.

5. Bayanin Injiniya da Marufi

An gabatar da na'urar tare da cikakken zanen girma. Manyan fasalolin injiniya sun haɗa da tsayin lamba gabaɗaya na 0.7 inches (17.22mm). Marufin tsari ne na tsarin na'urar nunawa ta LED. Zanen ya haɗa da mahimman girma kamar tsayi gabaɗaya, faɗi, tazarar sassa, da tazarar jagora. An ƙayyade ƙimar ƙima a matsayin ±0.25mm sai dai idan an faɗi akasin haka. Zanen Da'irar Cikiya nuna tsarin matrix: ginshiƙan anode 5 da layukan cathode 7. Wannan tsari ne na gama-gari na layin cathode don haɗawa da yawa.

6. Haɗin Fitila da Mu'amala

An ayyana fitilun fitila tare da tsarin fitila 12. Haɗin kai ya haɗu da ginshiƙan anode da layukan cathode: Fitila 1: Ginshiƙi na Anode 1, Fitila 2: Layi na Cathode 3, Fitila 3: Ginshiƙi na Anode 2, Fitila 4: Layi na Cathode 5, Fitila 5: Layi na Cathode 6, Fitila 6: Layi na Cathode 7, Fitila 7: Ginshiƙi na Anode 4, Fitila 8: Ginshiƙi na Anode 5, Fitila 9: Layi na Cathode 4, Fitila 10: Ginshiƙi na Anode 3, Fitila 11: Layi na Cathode 2, Fitila 12: Layi na Cathode 1. Dole ne a bi wannan tsari na musamman a cikin shimfidar PCB da software na direba don magance kowane digo a cikin matrix daidai. Yawan lambar fitila yana yiwuwa a jere tare da gefe ɗaya na marufi.

7. Jagororin Gida da Haɗawa

Babban jagora da aka bayar shine zafin jiki na gidaƙayyadaddun: 260°C na dakika 3, an auna 1.6mm a ƙasa da matakin wurin zama. Wannan ma'auni ne na gida na sake kunnawa don abubuwan da ke cikin rami, wanda aka ƙera don tabbatar da haɗin gida mai aminci ba tare da fallasa guntu na semiconductor ga zafi mai yawa wanda zai iya lalata aiki ko haifar da gazawa ba. Don gida na hannu, yakamata a kusanci irin wannan yanayin zafi tare da ƙarfe mai sarrafawa. Yakamata a kiyaye matakan kariya na ESD (Fitowar Wutar Lantarki) yayin sarrafawa. Yankin zafin ajiya shine -35°C zuwa +85°C.

8. Shawarwarin Aikace-aikace

8.1 Yanayin Aikace-aikace na Al'ada

Wannan na'urar nunawa ta dace da aikace-aikacen da ke buƙatar lamba ɗaya, mai haske, da sauƙin karantawa ko iyakaccen saitin haruffa. Misalai sun haɗa da: mitocin panel na dijital don ƙarfin wutar lantarki, wutar lantarki, ko zafin jiki; ƙididdiga ko na'urorin ƙidayar lokaci masu sauƙi; allunan nuna matsayi akan kayan aiki ko kayan masana'antu; da nunin bayanai na asali a cikin na'urorin lantarki na mabukaci.

8.2 Abubuwan da ake la'akari da ƙira

• Da'irar Tuƙi: Ana buƙatar microcontroller tare da isassun fitilun I/O ko takamaiman IC direban LED don haɗa matrix 5x7. Dole ne direban ya samo wutar lantarki zuwa ginshiƙan anode kuma ya zubar da wutar lantarki daga layukan cathode.
• Iyakance Wutar Lantarki: Masu jure wutar lantarki na waje wajibi ne ga kowane ginshiƙi na anode (ko a haɗa su cikin direba) don saita wutar lantarki ta gaba zuwa ƙimar aminci, yawanci tsakanin 10-20mA kowane digo matsakaici, la'akari da cikakken aiki.
• Haɗawa da Yawa: An ƙera na'urar nunawa don aiki mai yawa. Dole ne ƙimar sabunta ta kasance mai girma sosai don guje wa flicker da ake iya gani (yawanci >60Hz). Matsakaicin wutar lantarki yayin lokacin KUNNA gajere zai fi girma fiye da matsakaicin wutar lantarki.
• Gudanar da Zafi: Tabbatar cewa ba a wuce matsakaicin ragewar wutar lantarki kowane digo ba, musamman a cikin yanayin zafi mai girma. Dole ne a yi la'akari da raguwar 0.2 mA/°C don wutar lantarki ta gaba.
• Kusurwar Dubawa: Faɗin kusurwar dubawa yana da amfani ga aikace-aikacen da za a iya duba na'urar nunawa daga wuraren da ba su da axis.

9. Kwatancen Fasaha da Bambance-bambance

Manyan abubuwan da suka bambanta na wannan na'urar nunawa shine amfani da fasahar AlInGaP Hyper Redda kuma takamaiman tsayin lamba 0.7-inch. Idan aka kwatanta da tsofaffin fasahohi kamar LED ja na GaAsP na daidaitaccen, AlInGaP yana ba da ingantaccen inganci sosai, yana haifar da haske mai girma don wutar lantarki iri ɗaya. Haɗin fuskar launin toka/farin digo an inganta shi don bambanci. Idan aka kwatanta da manyan ko ƙananan nunawa, girman 0.7-inch yana ba da daidaito tsakanin karantawa da sararin allon. Matrix 5x7 shine ma'auni don haruffa, yana ba da kyakkyawan ƙuduri don haruffa da lambobi.

10. Tambayoyin da ake yawan yi Dangane da Ma'auni na Fasaha

Q: Menene bambanci tsakanin matsakaicin tsayin raƙuman ruwa (650nm) da mafi girman tsayin raƙuman ruwa (639nm)?

A: Matsakaicin tsayin raƙuman ruwa shine madaidaicin wurin mafi girman fitar da haske daga LED. Mafi girman tsayin raƙuman ruwa shine launin da idon ɗan adam ya gane, wanda zai iya bambanta kaɗan saboda siffar bakan haske. Dukansu ƙayyadaddun ma'auni ne.

Q: Ta yaya zan fassara yanayin gwaji na Matsakaicin Ƙarfin Hasken (IP=32mA, 1/16 Duty)?

A: Ana buga LED da wutar lantarki 32mA, amma yana kunne ne kawai na 1/16 na lokaci a cikin zagayowar haɗawa. Hasken da aka auna matsakaici ne. Wutar lantarki ta nan take yayin lokacin KUNNA tana da girma, amma ana sarrafa matsakaicin wutar lantarki.

Q: Zan iya tuƙa wannan na'urar nunawa tare da wutar lantarki DC akai-akai ba tare da haɗawa ba?

A: A fasaha, i, ta hanyar kunna duk digogin da ake so akai-akai. Duk da haka, wannan zai ƙara yawan amfani da wutar lantarki gabaɗaya da samar da zafi idan aka kwatanta da tuƙin haɗawa, kuma ba shine nufi ko mafi kyawun amfani don na'urar nunawa matrix ba.

Q: Menene ma'anar Matsakaicin Daidaitawar Ƙarfin Hasken 2:1 ga ƙirar ta?

A: Yana tabbatar da cewa a cikin na'urar nunawa guda ɗaya, babu wani yanki da zai fi haske fiye da sau biyu na mafi duhu. Wannan yana tabbatar da daidaiton gani na halin da aka kafa.

11. Ƙirar Aiki da Shari'ar Amfani

Yi la'akari da ƙira mai sauƙi na nunin ma'aunin zafin jiki na dijital. Microcontroller yana karanta firikwensin zafin jiki kuma yana tuƙa LTP-747KD don nuna ƙimomi daga -35 zuwa 85 (daidai da kewayon aikinsa). Firmware ɗin zai ƙunshi taswirar font, yana fassara kowane lamba (0-9 da watakila alamar ragi) zuwa tsarin da ya dace na digo don haskakawa akan grid 5x7. Tashoshin I/O na microcontroller, waɗanda aka tsara tare da damar zubar da wutar lantarki/samun wutar lantarki da ya dace, za su bincika cikin sauri ta cikin layukan cathode guda bakwai, yayin da ginshiƙan anode guda biyar na layin aiki an saita su zuwa tsari don halin da ake so. Za a ƙididdige masu jure wutar lantarki akan layukan anode bisa ga ƙarfin wutar lantarki, ƙarfin wutar gaba na LED, da matsakaicin wutar bugun da ake so (misali, mai niyyar ~20-30mA yayin lokacin KUNNA don cimma kyakkyawan haske yayin da yake cikin ƙima). Ƙirar akwati yana buƙatar yin la'akari da faɗin kusurwar dubawa don sauƙin karantawa.

12. Gabatarwar Ka'idar Aiki

LTP-747KD yana aiki bisa ka'idar matrix na diode mai fitar da haske (LED). Kowane digo 35 LED ne na AlInGaP na mutum ɗaya. Waɗannan LED ɗin an tsara su ta hanyar lantarki a cikin grid ginshiƙi 5 ta layi 7. Don haskaka takamaiman digo, dole ne a yi amfani da ƙarfin wutar lantarki mai kyau ga ginshiƙin anode ɗin da ya dace yayin da layin cathode ɗin da ya dace ya haɗa zuwa ƙasa (ko ƙaramin wutar lantarki). Don nuna hali, ana haskaka digogi da yawa a cikin tsari. Don sarrafa wutar lantarki da ƙididdigar fitila, haɗawa da yawaana amfani da shi: mai sarrafa yana kunna layin cathode ɗaya a lokaci ɗaya kuma yana amfani da tsarin wannan layi zuwa ginshiƙan anode guda biyar. Wannan zagayowar yana maimaitawa ta duk layuka bakwai cikin sauri har idon ɗan adam ya gane tsayayyen cikakken hali. Kayan AlInGaP suna fitar da haske lokacin da electrons suka sake haɗuwa tare da ramuka a kan bandgap na kayan, suna sakin makamashi a matsayin photons a cikin tsayin raƙuman ruwa na ja.

13. Trends na Fasaha da Mahallin

Fasahar LED ta AlInGaP tana wakiltar ci gaba mai mahimmanci akan tsofaffin kayan LED ja kamar GaAsP, tana ba da inganci mafi girma, haske, da kwanciyar hankali na zafin jiki. Duk da cewa wannan takardar bayanin ta fito ne daga 2002, ainihin fasahar ta kasance mai dacewa don takamaiman buƙatun launi da aiki. Trends na yanzu a cikin fasahar nunawa sun haɗa da canzawa zuwa marufi na Surface-mount device (SMD) don haɗawa ta atomatik, matrices masu yawan girma, da haɗa na'urorin lantarki na direba a cikin na'urar nunawa. Bugu da ƙari, don aikace-aikacen launi cikakke, masana'antu sun fi matsawa zuwa LED InGaN shuɗi tare da phosphors don farin haske ko haɗe tare da LED ja da kore. Duk da haka, don nunawa ja guda ɗaya waɗanda ke buƙatar inganci da aminci, musamman a cikin masana'antu ko waje, na'urorin tushen AlInGaP kamar wanda aka bayyana suna ci gaba da zama ingantaccen mafita mai ƙarfi. Matsar zuwa haɗawa mafi girma da nunawa masu hankali yana ci gaba, amma ƙananan na'urori na matrix digo suna taka muhimmiyar rawa a cikin aikace-aikacen da ke da hankali ko na al'ada.