Takardar Bayani na Fasaha ta LTP-22157M - Nunin LED Dot Matrix - Tsawon 2.2-inch (57.22mm) - Tsari 5x7 - LED Ja-Orange & Kore - Takardar Fasaha ta Turanci

1. Bayyani Game da Samfur

LTP-22157M wani tsari ne na nunin dot matrix mai launi daya, wanda aka tsara don nuna haruffa da lambobi. Aikinsa na asali shine samar da hanyar sadarwa ta gani ta hanyar haskaka takamaiman tsarin fitilun LED a cikin grid na ginshiƙai 5 da layuka 7. Na'urar ta haɗa fasahohin guda biyu na LED guda a cikin kunshin guda: LED na ja-orange da LED na kore. Wannan ikon launuka biyu, ko da yake ba zai ba da damar launuka da yawa a kowane ɗigo ba, yana ba da damar zaɗen launin kunshin ko tsare-tsare masu sauƙi na nuna halaye biyu. Nunin yana da farantin fuska mai launin toka tare da ɗigoɗigo fari, wanda ke ƙara bambanci da karantawa ƙarƙashin yanayin haske daban-daban. Aikinsa na farko shine a cikin kayan aikin masana'antu, kayan aikin ma'auni, na'urorin siyarwa, da sauran tsarin da ke buƙatar karatun haruffa mai sauƙi, amintacce.

Babban fa'idar wannan nunin yana cikin ginin sa mai ƙarfi, yana ba da babban aminci da dogon rayuwar aiki idan aka kwatanta da tsofaffin fasahohi kamar nunin da ke da filament. Yana buƙatar ƙaramin wutar lantarki kuma an tsara shi don sauƙin haɗawa da lantarki, yana dacewa da daidaitattun lambobin ASCII da EBCDIC. Ƙirar injiniyan ta ba da damar tara a kwance, yana ba da damar ƙirar nunin haruffa da yawa.

2. Fassarar Maƙasudin Ma'auni na Fasaha

2.1 Halayen Haskakawa da na Gani

An ƙayyade aikin gani daban don abubuwan LED na kore da ja-orange. GaLED na Kore, matsakaicin ƙarfin haske na yau da kullun shine 4800 µcd lokacin da aka tuka shi da kololuwar halin yanzu (Ip) na 80mA a cikin zagayowar aiki 1/16. Tsawon zango mai rinjaye (λd) yawanci shine 569 nm, kuma kololuwar tsawon zango (λp) shine 565 nm, yana sanya shi a cikin yankin kore mai tsabta na bakan. Rabin faɗin layin bakan (Δλ) shine 30 nm, yana nuna matsakaicin ƙunci na fitarwa.

GaLED na Ja-Orange, matsakaicin ƙarfin haske na yau da kullun shima shine 4800 µcd ƙarƙashin yanayin tuƙi iri ɗaya na 80mA, zagayowar aiki 1/16. Tsawon zango mai rinjaye yawanci shine 621 nm, kuma kololuwar fitarwa tana a 630 nm, yana siffanta launinsa na ja-orange. Rabin faɗin layin bakan ya fi fadi a 40 nm. Wani muhimmin ma'auni don daidaiton nunin shine Matsakaicin Daidaiton Ƙarfin Haskakawa (IV-m), wanda aka ƙayyade a matsayin 2:1 mafi girma. Wannan yana nufin ƙarfin haske na ɗigo mafi rauni a cikin jeri ba zai zama ƙasa da rabin ƙarfin haske na ɗigo mafi haske ba ƙarƙashin yanayin gwaji iri ɗaya (IF=10mA), yana tabbatar da yarda da daidaiton gani a cikin harafin.

2.2 Ma'auni na Lantarki

Halayen lantarki suna ayyana iyakokin aiki da aikin yau da kullun.Matsakaicin Ma'auni Mafi Girma suna daidai ga launuka biyu: matsakaicin raguwar wutar lantarki a kowane ɗigo shine 36 mW, kololuwar halin yanzu na gaba a kowane ɗigo shine 100 mA, kuma matsakaicin halin yanzu na gaba a kowane ɗigo dole ne a rage shi a layi daya daga 13 mA a 25°C da 0.17 mA/°C. Matsakaicin ƙarfin lantarki na baya a kowane sashe shine 5V. Wucewa waɗannan ma'auni na iya haifar da lalacewa ta dindindin.

TheHalayen Lantarki na Yau da Kullun suna nuna ƙarfin lantarki na gaba (VF). Ga LED na Kore, VF yawanci shine 2.6V a 20mA kuma 3.7V yawanci a 80mA. Ga LED na Ja-Orange, VF yawanci shine 2.6V a 20mA kuma 3.4V yawanci a 80mA. Halin yanzu na baya (IR) ga kowane ɗigo shine mafi girman 100 µA a VR=5V. Waɗannan ƙimomi suna da mahimmanci don ƙirar da'irar iyakance halin yanzu da wutar lantarki.

3. Halayen Zafi

An ƙayyade na'urar don kewayon zafin aiki na -35°C zuwa +85°C da kewayon zafin ajiya iri ɗaya. Lanƙwasa don matsakaicin halin yanzu na gaba ma'auni ne na zafi kai tsaye; yayin da zafin yanayi ya tashi sama da 25°C, dole ne a rage halin yanzu na ci gaba da izini don hana zafi da ƙara lalacewa. An ƙayyade zafin gishiri a matsayin mafi girman 260°C na mafi ƙanƙanin dakika 3, wanda aka auna 1.6mm ƙasa da farantin zama, wanda yake da mahimmanci ga hanyoyin haɗa PCB.

4. Bayanin Tsarin Rarraba

Takardar bayani tana nuna cewa na'uraran rarraba ta don ƙarfin haske. Wannan yana nuna cewa ana rarraba raka'o'i bisa ga hasken da aka auna. Ko da yake ba a ba da takamaiman lambobin rarrabuwa a cikin wannan takarda ba, irin wannan tsarin yana tabbatar da cewa masu ƙira za su iya zaɗar nunin tare da tabbataccen mafi ƙanƙanin haske ko matsakaicin kewayon haske, wanda ke da mahimmanci ga daidaiton samfur, musamman lokacin da ake amfani da nunai da yawa tare. Ba a ambaci rarrabuwar ƙarfin lantarki ko tsawon zango a cikin wannan takardar bayani ba; tsayin zango mai rinjaye/kololuwar ana ba da su azaman ƙimomi na yau da kullun.

5. Bincike na Lanƙwasa Aiki

Takardar bayani tana nuni gaLanƙwasa Halayen Lantarki/Gani na Yau da Kullun. Ko da yake ba a ƙididdige takamaiman lanƙwasa a cikin rubutun da aka bayar ba, irin waɗannan jadawali da aka haɗa a cikin cikakkun takardun bayani za su kwatanta dangantakar tsakanin halin yanzu na gaba (IF) da ƙarfin lantarki na gaba (VF), dangantakar tsakanin halin yanzu na gaba da ƙarfin haske, da bambancin waɗannan ma'auni tare da zafin yanayi. Bincika waɗannan lanƙwasa yana ba masu ƙira damar inganta halin yanzu na tuƙi don haske da inganci da ake so, da kuma fahimtar yadda aikin zai canza a cikin kewayon zafin aiki.

6. Bayanin Injiniya da Kunshin

Nunin yana da tsayin matrix na 2.2 inches (57.22 mm). An ba da girman kunshin a cikin zane tare da duk raka'o'i a cikin milimita da matsakaicin jurewa na ±0.25 mm sai dai idan an faɗi. Na'urar tana da tsarin pins 18. An ayyana tsarin pins a sarari: Pins 1-4 da 9-12 sune layukan anode (1-7). Pins 5-9 sune ginshiƙan cathode na LED na Kore (ginshiƙai 1-5). Pins 13-17 sune ginshiƙan cathode na LED na Ja-Orange (ginshiƙai 5-1, a jere na baya). Pin 18 ba shi da haɗi. Wannan tsari yana sauƙaƙa tuƙin da yawa, inda mai sarrafa yake aika kowane layi (anode) a jere yayin da yake ba da bayanan ginshiƙi (cathode) na wannan layin.

7. Jagororin Gishiri da Haɗawa

Babban jagorar haɗawa shine bayanin zafin gishiri: jikin kayan bai kamata a fallasa shi ga zafin da ya wuce 260°C na fiye da dakika 3 ba yayin sake kwarara ko gishirin igiyar ruwa. Ma'aunin ma'auni shine 1.6mm (ƙasa da inci 1/16) ƙasa da farantin zama, wanda ya yi daidai da saman PCB. Yakamata a kiyaye matakan kariya na ESD (Fitarwa na Lantarki Mai Tsauri) yayin sarrafawa, saboda LED suna da hankali ga lantarki mai tsauri. Don ajiya, ana ba da shawarar kewayon -35°C zuwa +85°C a cikin yanayi mai ƙaramin zafi.

8. Shawarwarin Aikace-aikace

8.1 Yanayin Aikace-aikace na Yau da Kullun

Wannan nunin yana da kyau ga aikace-aikacen da ke buƙatar karatun haruffa da lambobi masu sauƙi, ƙanan farashi. Misalai sun haɗa da: nunin yanayi akan allunan sarrafa masana'antu, karatun asali akan kayan aikin gwaji da ma'auni, saƙon saƙo mai sauƙi akan kayan amfani na mabukaci, da alamomin tushen haruffa a cikin tsofaffin tsarin ko tsarin da ke da hankali ga farashi. Siffar tara a kwance tana ba da damar ƙirar nunin lambobi da yawa don ƙidaya, na'urorin ƙidayar lokaci, ko gabatarwar bayanai ta asali.

8.2 Abubuwan da ake la'akari da ƙira

Da'irar Tuƙi:Nunin yana buƙatar da'irar tuƙi ta waje. Ana kaiwa kowane ɗigo LED ta layinsa (anode) da ginshiƙinsa (cathode). Dole ne direban ya samar da isasshen kololuwar halin yanzu (har zuwa 80mA da aka ƙayyade don cikakken haske) a cikin ƙanan bugun jini, saboda matsakaicin halin yanzu yana iyakance ta hanyar zagayowar aiki. Masu iyakance halin yanzu da suka dace ko direbobi na halin yanzu na dindindin suna da mahimmanci ga kowane layin cathode don saita halin yanzu da kare LED.

Haɗuwa da Microcontroller:Ana iya sarrafa tuƙin da yawa ta hanyar microcontroller tare da isassun fil ɗin I/O ko ta hanyar takamaiman IC na direban nunin (misali, MAX7219). Dole ne farashin sabuntawa ya yi yawa sosai (yawanci >60Hz) don guje wa kiftawa da ake iya gani.

Zaɗen Launi:Dole ne mai ƙira ya zaɗi ko dai ya yi amfani da LED na kore ko ja-orange ta hanyar haɗawa da pins na cathode da suka dace. Ba za a iya haɗa su a matakin ɗigo ɗaya ba.

Kusurwar Dubawa:Takardar bayani ta ambaci \"kusurwar dubawa mai faɗi,\" amma ba ta ƙayyade ƙima ba. Don aikace-aikacen kusurwar dubawa mai mahimmanci, yakamata a tabbatar da wannan ko a gwada shi.

9. Kwatancen Fasaha

Idan aka kwatanta da nunin graphic OLED ko TFT na zamani, wannan dot matrix yana da iyakancewa sosai a cikin ƙuduri, ikon launi, da yawan bayanai. Fa'idodinsa sunesauƙi sosai, ƙarfi, faɗin kewayon zafin aiki, ƙanan farashi, da babban haske. Idan aka kwatanta da sauran nunin LED dot matrix na zamani guda, babban abin da ya bambanta shi ne haɗa launukan LED guda biyu daban-daban a cikin kunshin guda, yana ba da sassauci na ƙira. Tsayin harafin 2.2-inch yana da girma sosai, yana sa ya dace da aikace-aikacen da karantawa daga nesa ke da mahimmanci.

10. Tambayoyin da ake yawan yi (Bisa Ma'auni na Fasaha)

Tambaya: Shin zan iya tuƙa LED na ja da kore a lokaci guda don ƙirar rawaya?

Amsa: A'a. LED na ja-orange da kore sune ƙanan na'urori daban-daban waɗanda aka haɗa su da pins na cathode daban-daban ga kowane ginshiƙi. Kuna iya kunna saitin launi ɗaya kawai ga dukan nunin a lokaci guda. Ba za ku iya haɗa launuka a kowane ɗigo ba.

Tambaya: Me \"1/16 Duty\" ke nufi a cikin yanayin gwajin ƙarfin haske?

Amsa: Yana nufin LED ana buga shi don 1/16 na jimlar lokacin zagayowar. Ƙarfin haske da aka ƙayyade (4800 µcd) shine matsakaicin ƙarfi a duk zagayowar. Kololuwar ƙarfin haske na ƙan lokaci yayin lokacin kunna yana da girma sosai. Wannan daidai ne ga nunin da yawa.

Tambaya: Ta yaya zan iya ƙididdige resistor na iyakance halin yanzu da ake buƙata?

Amsa: Yi amfani da dabara: R = (Vcc - VF - Vdrop) / IF. Inda Vcc shine ƙarfin lantarkin ku, VF shine ƙarfin lantarki na gaba na LED daga takardar bayani (yi amfani da mafi girman ƙima don aminci, misali, 3.7V don kore a 80mA), Vdrop shine duk wani raguwar ƙarfin lantarki a kan transistor ɗin tuƙi, kuma IF shine halin yanzu na gaba da kuke so (misali, 20mA don ƙanan haske). Tabbatar cewa matakin wutar lantarki na resistor ya isa: P = IF^2 * R.

Tambaya: Tsarin pins yana nuna ginshiƙan cathode na ja da kore suna cikin jere na baya. Shin wannan kuskure ne?

Amsa: A'a. Wannan shine haɗin pin da aka rubuta. Zanen da'irar ciki (wanda aka ambata a cikin takardar bayani) zai nuna yadda anodes da cathodes suka haɗu. Dole ne mai ƙira ya bi wannan tsarin pins daidai lokacin ƙirar PCB da rubuta software ɗin tuƙi.

11. Yanayin Amfani na Aiki

Hali: Karatun Mai Sarrafa Zafin Jiki na Masana'antu.Tsarin yana sa ido kan zafin tanda kuma yana buɗatar nuna shi akan panel da ake iya gani daga mita da yawa. Ana amfani da nunin LTP-22157M guda biyu, an tara su a kwance. Microcontroller yana karanta firikwensin zafin jiki, yana canza ƙimar zuwa haruffan ASCII, kuma yana tuƙa nunin ta hanyar tsarin tuƙi da yawa. An zaɗi LED na ja-orange saboda babban ganinsu. An saita halin yanzu na tuƙi zuwa 60mA a kowane ɗigo a cikin zagayowar aiki 1/8, yana ba da lambobi masu haske, bayyananne waɗanda suka cika buɗatar ƙarfi. Ƙirar tana amfani da faɗin kewayon zafin aiki don tabbatar da aminci a cikin akwatin masana'antu.

12. Gabatarwar Ka'ida

Nunin dot matrix 5x7 grid ne na LED 35 waɗanda ake iya kaiwa da kansu. Don nuna harafi, ana haskaka takamaiman tsarin waɗannan ɗigoɗigo. Saboda iyakokin pin, ba a haɗa LED ɗaya ɗaya. Maimakon haka, an tsara su a cikintsarin matrix. Duk LED a cikin layi guda suna raba haɗin anode guda ɗaya, kuma duk LED a cikin ginshiƙi guda suna raba haɗin cathode guda ɗaya (don launi da aka ba da). Don haskaka takamaiman ɗigo, ana tuƙa layinsa da ya dace zuwa sama (anode ya kunna), kuma ana tuƙa layin ginshiƙinsa zuwa ƙasa (cathode ya kunna). Don nuna cikakken harafi, mai sarrafa yana sake zagayowa cikin sauri ta kowane layi (1-7), yana kunna shi yayin da yake ba da bayanan tsarin na wannan layi akan layukan ginshiƙi biyar. Wannan dabarar tuƙi da yawa tana ba da damar sarrafa ɗigoɗigo 35 tare da pins 12 kawai (layuka 7 + ginshiƙai 5).

13. Trends na Ci Gaba

Nunai kamar LTP-22157M suna wakiltar fasaha mai girma, ta gado. Trends a cikin nunin haruffa da lambobi ya ƙaura zuwamafi girman haɗawa da hankali. Na'urori na zamani sau da yawa sun haɗa da IC direban, mai sarrafa, wani lokacin ma har da ɗakin karatu na rubutu a cikin kunshin nunin, suna sadarwa ta hanyoyin sadarwa masu sauƙi (I2C, SPI). Wannan yana rage rikitarwar ƙira sosai ga injiniyan tsarin. Bugu da ƙari, akwai sauyi zuwaikon launuka da yawa da cikakken hotoa cikin kunshuna masu girman iri ɗaya, kamar nunin OLED, waɗanda za su iya nuna hotuna na al'ada, layukan rubutu da yawa, da launuka daban-daban. Koyaya, don aikace-aikacen da ke buɗatar babban haske sosai, ƙarfin muhalli mai tsanani, mafi ƙanƙan farashi, ko sauƙin maye gurbin a cikin ƙirorin da suka wanzu, tsofaffin nunin LED dot matrix kamar wannan sun kasance mafita mai aminci kuma mai aminci.