LTP-2557KS 5x7 Dot Matrix LED Display Datasheet - Tsawon 2-inch - AlInGaP Yellow - Takardar Fasaha ta Turanci

1. Bayyani Game da Samfur

LTP-2557KS na'urar nuni ce ta lamba daya, mai iya nuna haruffa da lambobi, wacce aka tsara don aikace-aikacen da ke bukatar fitar da haruffa masu bayyana da karantawa. Babban aikinta shi ne wakiltar haruffan ASCII da EBCDIC ta hanyar grid na diodes masu haskakawa (LEDs) da za'a iya sarrafa su kai tsaye.

1.1 Fa'idodi na Asali da Kasuwar da Ake Nufi

Wannan na'urar tana ba da fa'idodi masu mahimmanci ga masu tsarin tsarin. Babbar fa'idarta ita ceƙarancin buƙatar wutar lantarki, wanda ya sa ta dace da aikace-aikacen da ake amfani da baturi ko masu kula da makamashi. Ƙarfin amincin ƙwaƙƙwaran jikina fasahar LED yana tabbatar da tsawon rayuwar aiki da juriya ga girgiza da rawar jiki idan aka kwatanta da na'urorin nuni na filament. Fadin kusurwar kallodaginin jirgin sama gudasuna ba da bayyanar daidai daga matsayi daban-daban. Yana damai iya tara a kwance, wanda ke ba da damar ƙirƙirar na'urorin nuni masu haruffa da yawa. A ƙarshe, kasancewarfakitin da ba shi da gubar wanda ya bi ka'idojin RoHSya sa ya dace da masana'antar lantarki ta zamani tare da la'akari da ka'idojin muhalli. Kasuwar da ake nufi ta haɗa da kwamfutocin sarrafa masana'antu, kayan aikin ma'auni, kayan aikin gwaji, na'urorin siyarwa a wurin, da sauran tsarin da aka haɗa inda ake buƙatar nuni na haruffa mai ƙarfi, mai ƙarancin wutar lantarki.

2. Zurfin Bincike na Bayanan Fasaha

Wannan sashe yana ba da cikakken bincike na gaskiya game da mahimman sigogi na aikin na'urar kamar yadda aka ayyana a cikin takardar bayani.

2.1 Halayen Hoto da na Gani

Na'urar nuni tana amfani dakayan semiconductor na Aluminium Indium Gallium Phosphide (AlInGaP)don guntun LED ɗinta na rawaya. Wannan tsarin kayan sananne ne don ingantacciyar inganci da kyakkyawan tsaftar launi a cikin bakan amber/rawaya/ja. Na yau da kulluntsawon zangon fitarwa mafi girma (λp)shi ne 588 nm, tare datsawon zangon da ya fi rinjaye (λd)na 587 nm, yana sanya shi cikin yankin rawaya. rabin faɗin layin bakan (Δλ)shi ne 15 nm, yana nuna ƙunƙuntaccen bandwidth na bakan wanda ke taimakawa wajen tsaftar launi.

Mahimmin sigar haske shi neMatsakaicin Ƙarfin Haskakawa (Iv). A ƙarƙashin ƙayyadaddun yanayin gwaji na kololuwar na'ura mai ƙarfi na 32 mA da zagayowar aiki na 1/16, ƙarfin yana kewayo daga mafi ƙanƙanta na 800 μcd zuwa mafi girma na 3600 μcd, tare da ƙimar da aka bayar na yau da kullun. Takardar bayanin kuma ta ƙayyadeMatsakaicin Daidaitawar Ƙarfin Haskakawana 2:1 mafi girma don ɗigo a cikin yanki mai haske iri ɗaya, wanda shine ma'auni na daidaiton haske a cikin matrix ɗin nuni.

2.2 Sigogi na Lantarki

Halayen lantarki suna ayyana iyakokin aiki da yanayi don na'urar. Matsakaicin Ƙimar Matsakaicisuna saita iyakoki don aiki lafiya:70 mW matsakaicin ɓarnawar wutar lantarki kowace ɗigo, 60 mA kololuwar gaba na gaba kowace ɗigo, da kumamatsakaicin gaba na gaba kowace ɗigo na 25 mA a 25°C, yana raguwa da layi da 0.33 mA/°C yayin da zafin jiki ya ƙaru. Matsakaicinjuzu'in juzu'i kowace ɗigo shine 5 V.

A ƙarƙashin yanayin aiki na yau da kullun,ƙarfin gaba (Vf)don kowane ɗigon LED guda ɗaya yana kewayo daga 2.05V zuwa 2.6V lokacin da aka tuƙa shi a 20 mA. juzu'in juzu'i (Ir)an ƙayyade a matsakaicin 100 μA lokacin da aka yi amfani da 5V a cikin juzu'i. Yankin zafin aiki da ajiya yana da faɗi, daga-35°C zuwa +105°C.

2.3 Halayen Zafi da Solder

Lankwasa raguwa don matsakaicin gaba na gaba shine mahimmin sigar zafi, yana nuna cewa matsakaicin izinin ci gaba yana raguwa yayin da zafin yanayi ya tashi sama da 25°C. Don haɗawa, takardar bayanin ta ƙayyade yanayin solder: ana iya sanya na'urar zuwa260°C na dakika 3, wanda aka auna 1/16 inch (kusan 1.59 mm) a ƙasan jirgin saman fakitin. Wannan shine daidaitaccen jagorar bayanin sake kunnawa solder.

3. Bayanin Tsarin Binning

Takardar bayanin tana nuna cewa na'urorinan rarraba su don ƙarfin haskakawa. Wannan yana nuna tsarin binning inda ake rarraba raka'a da lakabi bisa ga ƙimar fitar hasken da aka auna (Iv) a ƙarƙashin ƙayyadaddun yanayin gwaji. Masu zane-zane na iya zaɓar kwandon don tabbatar da daidaiton haske a cikin na'urorin nuni da yawa a cikin tsarin ko don biyan takamaiman buƙatun haske don aikace-aikace. Yankin ƙarfin da aka bayar (800-3600 μcd) yana ayyana kwandon da za a iya samu.

4. Bincike na Lankwasa Aiki

Yayin da takardar bayanin ta yi nuni da lankwasan halaye na yau da kullun, ba a yi cikakken bayani game da takamaiman makircin a cikin rubutun da aka bayar ba. Yawanci, irin waɗannan lankwasan don na'urar nuni LED za su haɗa da:

• Lankwasa Gaba na Gaba (If) vs. Ƙarfin Gaba (Vf):Yana nuna alaƙar ma'auni, mai mahimmanci don ƙirƙirar da'irar iyakance na'ura mai ƙarfi.
• Lankwasa Ƙarfin Haskakawa (Iv) vs. Gaba na Gaba (If):Yana nuna yadda fitar haske ke ƙaruwa tare da na'ura mai ƙarfi, har zuwa matsakaicin ƙima.
• Lankwasa Ƙarfin Haskakawa (Iv) vs. Zafin Yanayi (Ta):Yana kwatanta raguwar fitar haske yayin da zafin haɗin gwiwa ya tashi, mai mahimmanci don sarrafa zafi.
• Lankwasa Rarraba Bakan:Jadawali wanda ke tsara ƙarfin dangi akan tsawon zango, yana nuna kololuwa a ~588 nm da rabin faɗin 15 nm.

Waɗannan lankwasan suna da mahimmanci don hasashen aiki a ƙarƙashin yanayin da ba daidai ba da kuma don ƙirar da'ira mai ƙarfi.

5. Bayanin Injiniya da Fakitin

LTP-2557KS fakitin rami ne. tsawon matrix shine 2 inches (50.8 mm). Fakitin yana dafuskar launin tokadalaunin ɗigo faridon mafi kyawun bambanci lokacin da LEDs ɗin suka kashe. Cikakken zanen girma ya nuna fakitin layi biyu mai ƙafafu 14. Duk girmansu suna cikin milimita tare da daidaitaccen haƙuri na ±0.25 mm sai dai idan an lura daban. An ƙayyade ƙimar canjin ƙarshen ƙafar a matsayin ±0.4 mm, wanda ke da mahimmanci don ƙirar rami na PCB.

6. Haɗin Ƙafa da Da'irar Ciki

Na'urar tana amfani datsari na 5x7 tare da zaɓin X-Yginin gine-gine. Jadawalin da'irar ciki da teburin haɗin ƙafa sun bayyana ƙirar da aka haɗa. An sanya ƙafafu zuwa takamaiman layukan anode (1-7) da ginshiƙan cathode (1-5). Wannan haɗakar yana rage adadin ƙafafun direba da ake buƙata daga 35 (don sarrafa kowane mutum) zuwa 12 (layuka 7 + ginshiƙai 5), yana sauƙaƙa da'irar mu'amala. Pinout kamar haka ne: Ƙafa 1: Anode Layi 5, Ƙafa 2: Anode Layi 7, Ƙafa 3: Cathode Ginshiƙi 2, Ƙafa 4: Cathode Ginshiƙi 3, Ƙafa 5: Anode Layi 4, Ƙafa 6: Cathode Ginshiƙi 5, Ƙafa 7: Anode Layi 6, Ƙafa 8: Anode Layi 3, Ƙafa 9: Anode Layi 1, Ƙafa 10: Cathode Ginshiƙi 4, Ƙafa 11: Cathode Ginshiƙi 3 (Lura: Ginshiƙi 3 ya bayyana sau biyu, mai yiwuwa kuskuren rubutu ne a cikin takardar bayani; ɗayan ya kamata ya zama Ginshiƙi 1 ko wani ginshiƙi), Ƙafa 12: Anode Layi 4 (kwafi na Ƙafa 5, mai yiwuwa kuskuren rubutu ne), Ƙafa 13: Cathode Ginshiƙi 1, Ƙafa 14: Anode Layi 2. Fassarar daidai wannan tebur yana da mahimmanci don shimfidar PCB daidai da software ɗin direba.

7. Jagorar Solder da Haɗawa

Kamar yadda Matsakaicin Ƙimar Matsakaici ya nuna, yanayin solder da aka ba da shawarar shine260°C na dakika 3, wanda aka auna a wani wuri 1.59mm ƙasan jikin fakitin. Wannan ya yi daidai da yanayin sake kunnawa mara gubar. Ya kamata a kula don guje wa wuce wannan zafin ko lokaci don hana lalata guntun LED ko fakitin filastik. Yayin sarrafawa, ya kamata a kiyaye matakan rigakafin ESD (Electrostatic Discharge) na yau da kullun don na'urorin semiconductor. Ajiya ya kamata ya kasance a cikin ƙayyadadden yanayin zafin jiki na -35°C zuwa +105°C a cikin yanayi mai ƙarancin zafi.

8. Shawarwari na Aikace-aikace

8.1 Yanayin Aikace-aikace na Yau da Kullun

• Kwamfutocin Sarrafa Masana'antu:Nuna saitin saiti, lambobin matsayi, ko saƙonnin kuskure.
• Kayan Aikin Gwaji da Ma'auni:Nuna karatun lambobi ko masu gano tashoshi.
• Samfuran Tsarin Da aka Haɗa:A matsayin mafi sauƙin fitarwa don microcontrollers.
• Haɓaka Tsarin Tsoho:Maye gurbin tsofaffin na'urorin nuni na incandescent ko na filastik.

8.2 Abubuwan da ake la'akari da Zane

• Da'irar Direba:Yana buƙatar da'irar direba mai haɗawa (misali, ta amfani da tsararrun transistor ko na'urorin direba na LED) waɗanda ke iya fitarwa/karkatar da kololuwar na'urori (har zuwa 60 mA kowace ɗigo, amma yawanci ana tuƙa ƙasa don haɗawa).
• Iyakance na'ura mai ƙarfi:Masu juriya na waje suna da mahimmanci don saita gaba na gaba don kowane ginshiƙi ko layi, wanda aka ƙididdige shi bisa ga ƙarfin wutar lantarki da ƙarfin gaba na LED.
• Ƙimar Sabuntawa:Tsarin haɗakar yana buƙatar isasshen ƙimar bincike (yawanci >100 Hz) don guje wa kyan gani.
• Tushen Wutar Lantarki:Dole ne ya iya ɗaukar buƙatun kololuwar na'ura mai ƙarfi yayin haɗawa.
• Software:Yana buƙatar taswirar font ɗin haruffa (pixel 5x7) da aka adana a cikin ƙwaƙwalwar ajiya da tsari don aiwatar da layukan da ginshiƙan da suka dace a jere don samar da haruffa.

9. Kwatancin Fasaha da Bambance-bambance

Idan aka kwatanta da na'urorin nuni na 5x7 dot matrix na zamani da ke amfani da fasaha daban-daban, LED rawaya na AlInGaP yana ba da fa'idodi daban-daban. Idan aka kwatanta da tsohonLED ja GaAsP, AlInGaP yana ba da inganci mafi girma da fitarwa mai haske. Idan aka kwatanta daLED na GaN kore ko shuɗi na yau da kullun, launin rawaya yana ba da kyakkyawar bayyana a cikin yanayi daban-daban na hasken yanayi kuma galibi ana zaɓar shi don taka tsantsan ko alamun matsayi. Fakitin rami ya bambanta shi da madadin da'irar saman, yana sa ya dace da ƙirar samfuri, ayyukan masu sha'awar, ko aikace-aikacen inda aka fi son haɗa rami don ƙarfin injiniya.

10. Tambayoyin da ake yawan yi (Bisa Sigogi na Fasaha)

Q: Me ake nufi da \"1/16 zagayowar aiki\" a cikin yanayin gwajin ƙarfin haskakawa?

A: Yana nufin kowane ɗigon LED yana kunna wutar lantarki kawai na 1/16 na jimlar lokacin zagayowar ma'auni. Wannan wakilci ne na tsarin tuƙi mai haɗawa inda layi ɗaya kawai ke aiki a kowane lokaci a cikin tsarin layi 16 (ko rabon lokaci na matrix 5x7). Ƙayyadadden ƙarfin shine ƙimar \"matsakaici\" akan cikakken zagayowar.

Q: Zan iya tuƙa wannan na'urar nuni tare da madaidaicin DC na'ura mai ƙarfi ba tare da haɗawa ba?

A: A zahiri i, amma ba shi da inganci kuma ba shine amfani da shi ba. Tuƙi duk ɗigo 35 a ci gaba a 20 mA zai buƙaci jimlar na'ura mai ƙarfi na 700 mA, wanda ya wuce iyakokin aiki kuma yana haifar da zafi mai yawa. Haɗawa shine daidaitaccen hanya mai inganci.

Q: Teburin haɗin ƙafar yana da kwafi (Ginshiƙi 3, Layi 4). Shin wannan kuskure ne?

A> Mafi yiwuwa, wannan kuskuren rubutu ne a cikin wannan sigar takardar bayani. A cikin daidaitaccen matrix 5x7, ya kamata a sami ƙafafun layin anode na musamman 7 da ƙafafun ginshiƙan cathode na musamman 5, jimlar ƙafafun siginar musamman 12 tare da yuwuwar ƙafafun wutar lantarki gama gari. Jadawalin pinout na zahiri shine tushen mai iko. Koyaushe a tabbatar da zanen fakitin.

11. Misalin Zane da Amfani

Harka: Nuni na Lamba Guda Mai Tushen Microcontroller.Mai zane yana amfani da microcontroller na Arduino don nuna lambobi 0-9. Layukan anode 7 an haɗa su da microcontroller ta hanyar masu juriya 7 na iyakance na'ura mai ƙarfi (ɗaya kowane layi). Ginshiƙan cathode 5 an haɗa su da transistors 5 na NPN (ko kuma IC na tsararren transistor kamar ULN2003) waɗanda tushensu direba ne ta hanyar ƙafafun microcontroller. Software yana gudana da madauki wanda: 1) Saita ƙafar layin anode ɗaya HIGH (misali, Layi 1), 2) Saita ƙafafun ginshiƙan cathode 5 masu dacewa LOW/HIGH bisa ga pixels da ake buƙata don wannan layin na harafin da ake so, 3) Jira ɗan gajeren lokaci (misali, 2ms), 4) Kashe Layi 1, da 5) Matsa zuwa Layi 2, maimaita tsarin. Wannan yana bincika duk layuka 7 cikin sauri, yana haifar da hoto mai dorewa. Na'ura mai ƙarfi don kowane LED mai haske an ƙaddara shi ta ƙarfin wutar lantarki (misali, 5V), LED Vf (~2.3V), da ƙimar resistor na jerin: R = (5V - 2.3V) / 0.020A = 135 Ohms (amfani da 150 Ohms na yau da kullun).

12. Ka'idar Aiki

LTP-2557KS yana aiki bisa ka'idar matrix LED mai haɗawa. ɗigon LED guda 35 an tsara su a cikin grid na layuka 7 a kwance (anodes) da ginshiƙai 5 a tsaye (cathodes). LED a mahadar layi da ginshiƙi zai haskaka kawai lokacin da wannan takamaiman layin aka saita shi zuwa ƙarfin lantarki mai kyau (anode high) kuma wannan takamaiman ginshiƙin an haɗa shi da ƙasa (cathode low). Ta hanyar kunna layi ɗaya a lokaci guda da saita ginshiƙan da suka dace don wannan layin, da yin haka cikin sauri (yawanci >60 Hz), idon ɗan adam yana ganin kwanciyar hankali, cikakken harafin saboda dorewar gani. Wannan hanyar tana rage adadin layukan sarrafawa da ake buƙata daga 35 zuwa 12.

13. Trends na Fasaha da Mahallin

Yayin da keɓaɓɓun na'urorin nuni na LED na rami 5x7 kamar LTP-2557KS suna wakiltar fasaha mai girma, har yanzu suna da alaƙa a cikin takamaiman ramuka masu buƙatar babban aminci, faɗin kusurwar kallo, da sauƙi. Trend a cikin fasahar nuni gaba ɗaya ya ƙaura zuwa ga ƙirar ƙira tare da masu sarrafawa na ciki (misali, LCDs na tushen HD44780), na'urorin nuni masu zane-zane mafi girma (OLED, TFT LCD), da na'urorin da'irar saman don ƙananan ƙira. Koyaya, fa'idar asali na LEDs—haskensu, tsawon rayuwa, da ƙarfi—sun tabbatar da ci gaba da amfani a cikin masana'antu, waje, da aikace-aikacen da za a iya gani inda wasu fasahohi zasu iya kasawa. Canjin zuwa AlInGaP daga tsofaffin kayan kamar GaAsP yana nuna ci gaba da inganta ingancin LED da aiki ko da a cikin wannan rukunin samfurin da aka kafa.