Lub hauv paus tsim qauv ntawm coj zaub screen hauv subway tsheb ciav hlau
Lub hauv paus tsim qauv ntawm subway coj zaub screen;Raws li cov ntaub ntawv qhia txog pej xeem nthuav dav dav dav hauv subway, sab hauv tsev coj zaub muaj ntau yam ntawm pej xeem thiab kev lag luam tus nqi.
Tam sim no, subway tsheb khiav lag luam hauv Suav teb feem ntau yog nruab nrog sab hauv tsev coj zaub, tab sis muaj ob peb lub luag haujlwm ntxiv thiab ib qho screen qhia cov ntsiab lus.Txhawm rau koom tes nrog kev siv cov ntaub ntawv xov xwm metro neeg caij tsheb tshiab, peb tau tsim lub tsheb npav tshiab ntau lub tsheb npav metro LED dynamic zaub screen.
Lub vijtsam zaub tsis tsuas yog muaj ntau lub tsheb npav sib txuas hauv kev sib txuas lus sab nraud, tab sis kuj tseem siv lub tsheb npav ib leeg thiab I2C tsheb npav hauv kev tswj xyuas hauv Circuit Court tsim.
Muaj ob homLED cov ntxaij vab tshausnyob rau hauv lub subway: ib tug yog muab tso rau sab nraum lub carriage los tso saib lub tsheb ciav hlau khiav seem, khiav kev taw qhia thiab tam sim no lub npe chaw nres tsheb, uas yog sib xws nrog Suav thiab lus Askiv;Lwm cov ntaub ntawv kev pabcuam kuj tuaj yeem tso tawm raws li kev xav tau ntawm kev ua haujlwm;Cov ntawv nyeem tuaj yeem ua tau zoo li qub, scrolling, txhais lus, dej tsaws tsag, animation thiab lwm yam teebmeem, thiab tus naj npawb ntawm cov cim tso tawm yog 16 × 12 16 dot matrix cim.Lwm qhov yog lub davhlau ya nyob twg sab hauv LED zaub, uas tau muab tso rau hauv lub tsheb ciav hlau.Lub davhlau ya nyob twg sab hauv tsev LED tuaj yeem teeb tsa lub davhlau ya nyob twg raws li lub tsheb ciav hlau yuav tsum tau ua, thiab tso saib lub davhlau ya nyob twg hauv lub sijhawm tiag tiag, nrog rau qhov ntsuas kub tam sim no hauv lub tsheb ciav hlau, nrog 16 cim × Yim 16 dot matrix cim.
Qhov system muaj pes tsawg leeg
LED zaub system screen yog tsim los ntawm ib tug ib-chip microcomputer tswj chav tsev thiab ib tug zaub unit.Ib chav tsev ib leeg tuaj yeem tso saib 16 × 16 cov cim Suav.Yog tias muaj qee qhov loj ntawm LED cov duab kos duab tsim tawm, nws tuaj yeem pom tau los ntawm kev siv ob peb lub ntsej muag ntse thiab cov qauv ntawm "tsev thaiv".Kev sib txuas lus Serial yog siv los ntawm cov khoom tso saib hauv qhov system.Ntxiv nrog rau kev tswj hwm cov zaub thiab xa cov lus qhia thiab cov teeb liab ntawm lub khoos phis tawj sab saud, chav tswj hwm kuj tseem kos nrog ib lub tsheb npav digital kub sensor 18B20.Ua tsaug rau cov qauv tsim ntawm kev tswj xyuas Circuit Court, yog tias muaj qhov yuav tsum tau ntsuas cov av noo, 18b20 tuaj yeem hloov kho mus rau lub module Circuit Court uas muaj DS2438 los ntawm Dallas thiab HIH23610 los ntawm HoneywELL.Txhawm rau ua kom tau raws li kev xav tau ntawm kev sib txuas lus ntawm tag nrho lub tsheb, CAN tsheb npav yog siv rau kev sib txuas lus ntawm lub khoos phis tawj sab saud thiab txhua chav tswj hauv lub tsheb.
kho vajtse tsim
Cov zaub vaj huam sib luag yog tsim los ntawm LED zaub vaj huam sib luag thiab tso saib Circuit Court.LED zaub vaj huam sib luag yog tsim los ntawm 4 dot matrix modules × 64 dot matrix universal ntse ntse zaub chav tsev, ib qho chaw tso saib tuaj yeem tso saib 4 16 × 16 dot matrix Suav cov cim lossis cov cim.Kev sib txuas lus Serial yog siv los ntawm cov khoom tso saib hauv lub kaw lus, kom ua haujlwm ntawm tag nrho cov kab ke sib koom ua ke thiab sib koom ua ke.Cov khoom siv hluav taws xob muaj ob lub 16 tus pin ca cable chaw nres nkoj, ob lub tsheb npav 74H245 tristate, ib qho 74HC04D rau inverter, ob lub 74H138 yim decoders thiab yim 74HC595 hloov latches.Cov tub ntxhais ntawm kev tswj xyuas Circuit Court yog lub siab ceev microcontroller 77E58 ntawm WINBOND, thiab cov siv lead ua zaus yog 24MHz AT29C020A yog 256K ROM rau khaws cia 16 × 16 dot matrix Suav cov cim tsev qiv ntawv thiab 16 × 8 dot matrix ASCII code rooj.AT24C020 yog EP2ROM raws li I2C serial tsheb npav, uas khaws cov lus qhia ua ntej, xws li subway chaw nres tsheb npe, txais tos, thiab lwm yam. Qhov kub ntawm lub tsheb yog ntsuas los ntawm ib lub tsheb npav digital kub sensor 18b20.SJA1000 thiab TJA1040 yog CAN tsheb npav maub los thiab transceiver feem.
Tswj Circuit Court tsim
Tag nrho cov kab ke siv lub zog microcontroller 77E58 ntawm Winbond ua lub hauv paus.Lub 77E58 tau txais kev tsim kho microprocessor core, thiab nws cov lus qhia tau sib xws nrog 51 series.Txawm li cas los xij, vim tias lub voj voog moos tsuas yog 4 lub voj voog, nws txoj kev khiav ceev feem ntau yog 2 ~ 3 npaug siab dua li cov tsoos 8051 ntawm tib lub moos zaus.Yog li ntawd, qhov yuav tsum tau muaj rau lub microcontroller nyob rau hauv lub dynamic zaub ntawm loj muaj peev xwm Suav cim yog daws tau zoo, thiab lub watchdog kuj muab.Lub 77E58 tswj lub cim xeeb flash AT29C020 los ntawm lub latch 74LS373, nrog qhov loj ntawm 256K.Txij li thaum lub cim xeeb muaj peev xwm ntau dua 64K, tus qauv tsim siv txoj kev hais txog nplooj ntawv, uas yog, P1.1 thiab P1.2 yog siv los xaiv nplooj ntawv rau lub cim xeeb flash, uas tau muab faib ua plaub nplooj ntawv.Qhov chaw nyob loj ntawm txhua nplooj ntawv yog 64K.Ntxiv rau kev xaiv AT29C020 chips, P1.5 xyuas kom meej tias P1.1 thiab P1.2 yuav tsis ua rau kev ua haujlwm tsis zoo ntawm AT29C020 thaum lawv rov qab siv dua ntawm 16 tus pin ca cable interface.CAN maub los yog qhov tseem ceeb ntawm kev sib txuas lus.Txhawm rau txhim kho qhov muaj peev xwm tiv thaiv kev cuam tshuam, 6N137 kev kub ceev optocoupler ntxiv ntawm CAN maub los SJA1000 thiab CAN transceiver TJA1040.Lub microcontroller xaiv CAN maub los SJA1000 nti los ntawm P3.0.18B20 yog ib lub tsheb npav nkaus xwb.Nws tsuas yog xav tau ib qho chaw nres nkoj I / O rau qhov sib txuas ntawm lub cuab yeej thiab microcontroller.Nws tuaj yeem ncaj qha hloov qhov kub thiab txias rau hauv lub teeb liab digital thiab tso tawm nws serially hauv 9-ntsis digital code hom.P1.4 raug xaiv nyob rau hauv kev tswj Circuit Court kom ua tiav cov kev xaiv nti thiab cov ntaub ntawv xa mus ua haujlwm ntawm 18B20.Lub moos cable SCL thiab bidirectional cov ntaub ntawv cable SDA ntawm AT24C020 yog feem ntau txuas nrog P1.6 thiab P1.7.16 tus pin tiaj tus hlau cuam tshuam ntawm microcontroller, uas yog qhov cuam tshuam ntawm cov tswj Circuit Court thiab cov khoom siv hluav taws xob.
Tso saib chav sib txuas thiab tswj
Cov khoom siv hluav taws xob txuas nrog 16 tus pin tiaj tus xaim chaw nres nkoj ntawm qhov chaw tswj Circuit Court los ntawm 16 tus pin tiaj tus hlau chaw nres nkoj (1), uas xa cov lus qhia thiab cov ntaub ntawv ntawm microcontroller mus rau LED zaub Circuit Court.Lub 16 tus pin ca hlau (2) yog siv rau cascading ntau cov ntxaij vab tshaus.Nws txoj kev sib txuas yog qhov tseem ceeb tib yam li 16 tus pin tiaj tus hlau chaw nres nkoj (1), tab sis nws yuav tsum tau muab sau tseg tias nws R kawg txuas nrog DS kawg ntawm yim 74H595 los ntawm sab laug mus rau sab xis hauv daim duab 2, Thaum cascading, nws yuav yog. txuas nrog hauv koob nrog 16 tus pin ca cable (1) chaw nres nkoj ntawm lub vijtsam tom ntej (raws li qhia hauv daim duab 1).CLK yog lub moos teeb liab davhlau ya nyob twg, STR yog kab latch davhlau ya nyob twg, R yog cov ntaub ntawv davhlau ya nyob twg, G (GND) thiab LOE yog kab teeb pom kev zoo, thiab A, B, C, D yog kab xaiv terminals.Cov haujlwm tshwj xeeb ntawm txhua qhov chaw nres nkoj yog raws li hauv qab no: A, B, C, D yog kab xaiv terminals, uas yog siv los tswj qhov tshwj xeeb xa cov ntaub ntawv los ntawm lub khoos phis tawj sab saud mus rau kab xaiv ntawm lub vaj huam sib luag, thiab R yog cov ntaub ntawv. Terminal, uas lees txais cov ntaub ntawv xa los ntawm microcontroller.Qhov kev ua haujlwm ntawm LED zaub vaj huam sib luag yog raws li nram no: tom qab CLK moos teeb liab lub davhlau ya nyob twg tau txais cov ntaub ntawv ntawm R lub davhlau ya nyob twg, tswj Circuit Court manually muab lub mem tes nce ntug, thiab STR nyob rau hauv kab ntawm cov ntaub ntawv (16 × 4) Tom qab tag nrho 64 cov ntaub ntawv raug xa mus, ib qho kev nce qib ntawm mem tes yog muab rau latch cov ntaub ntawv;Lub LOE tau teeb tsa rau 1 los ntawm microcontroller kom pom cov kab.Daim duab schematic ntawm cov khoom siv hluav taws xob tau pom hauv daim duab 3.
Modular tsim
Metro tsheb muaj cov kev xav tau sib txawv rau sab hauv tsev coj zaub raws li qhov xwm txheej tiag tiag, yog li peb tau txiav txim siab tag nrho qhov no thaum tsim lub voj voog, uas yog, nyob rau hauv cov xwm txheej ntawm kev ua kom ntseeg tau tias lub luag haujlwm tseem ceeb thiab cov qauv tseem tsis hloov pauv, cov qauv tshwj xeeb tuaj yeem hloov pauv.Cov qauv no ua rau LED tswj Circuit Court muaj kev nthuav dav thiab yooj yim ntawm kev siv.
Kub thiab humidity module
Nyob rau hauv cov cheeb tsam kub thiab los nag nyob rau sab qab teb, txawm hais tias muaj qhov kub thiab txias txias hauv lub tsheb, cov av noo kuj yog ib qho kev qhia tseem ceeb uas cov neeg caij tsheb saib xyuas.Qhov kub thiab av noo module tsim los ntawm peb muaj kev ua haujlwm ntawm kev ntsuas kub thiab av noo.Qhov ntsuas kub thiab qhov ntsuas kub thiab cov av noo muaj tib lub qhov (socket) interface, ob qho tib si yog cov qauv tsheb npav thiab tswj los ntawm P1.4 chaw nres nkoj, yog li nws yooj yim los pauv lawv.HIH3610 yog peb lub davhlau ya nyob twg integrated humidity sensor nrog voltage tso zis tsim los ntawm Honeywell Company.DS2438 yog 10-ntsis A/D converter nrog ib lub tsheb npav sib txuas lus interface.Lub nti muaj cov kev daws teeb meem siab digital kub sensor, uas tuaj yeem siv rau qhov kub thiab txias ntawm cov av noo sensors.
485 tsheb npav nthuav dav module
Raws li lub tsheb npav paub tab thiab pheej yig, 485 tsheb npav muaj txoj haujlwm tsis tuaj yeem hloov pauv hauv thaj chaw muaj kev lag luam thiab chaw tsheb.Yog li ntawd, peb tau tsim lub 485 tsheb npav nthuav dav module, uas tuaj yeem hloov qhov qub CAN module rau kev sib txuas lus sab nraud.Lub module siv MAXIM's photoelectric rho tawm MXL1535E ua 485 transceiver.Txhawm rau kom tswj tau qhov sib xws, ob qho tib si MXL1535E thiab SJA1000 yog nti xaiv los ntawm P3.0.Tsis tas li ntawd, 2500VRMS kev sib cais hluav taws xob yog muab nruab nrab ntawm RS2485 sab thiab maub los lossis tswj cov logic sab los ntawm kev hloov pauv.TVS diode Circuit Court yog ntxiv rau qhov tso zis ib feem ntawm lub module kom txo cov kab surge cuam tshuam.Jumpers kuj tuaj yeem siv los txiav txim siab seb puas yuav thauj cov tsheb thauj mus los tsis zoo.
Software tsim
Lub system software yog tsim los ntawm sab sauv computer tswj software thiab chav tswj tswj software.Lub khoos phis tawj tswj hwm lub khoos phis tawj sab saud yog tsim los ntawm Windows22000 kev khiav haujlwm platform siv C ++ BUILD6.0, suav nrog kev xaiv hom zaub (xws li static, flashing, scrolling, typing, etc.), scrolling direction xaiv (xws li nce thiab nqis scrolling thiab sab laug thiab txoj cai scrolling), dynamic zaub ceev hloov (xws li ntawv flashing zaus, scrolling ceev, typing zaub ceev, thiab lwm yam), tso saib cov ntsiab lus input, tso saib ua ntej, thiab lwm yam.
Thaum lub kaw lus tab tom ua haujlwm, lub kaw lus tuaj yeem tsis tsuas yog tso saib cov cim xws li chaw nres tsheb tshaj tawm thiab tshaj tawm raws li kev teeb tsa ua ntej, tab sis kuj tseem muab cov cim tso rau hauv qhov xav tau.Cov tswj software ntawm chav tswj tswj yog programmed los ntawm KEILC ntawm 8051 thiab solidified nyob rau hauv lub EEPROM ntawm ib tug chip computer 77E58.Nws tsuas yog ua kom tiav kev sib txuas lus ntawm cov khoos phis tawj sab sauv thiab qis, cov ntaub ntawv tau txais qhov kub thiab txias, I / O interface tswj thiab lwm yam haujlwm.Thaum lub sijhawm ua haujlwm tiag tiag, qhov ntsuas qhov ntsuas qhov tseeb ncav cuag ± 0.5 ℃ thiab cov av noo ntsuas qhov tseeb ncav cuag ± 2% RH
Xaus
Daim ntawv no qhia txog lub tswv yim tsim ntawm subway nyob sab hauv tsev LED zaub screen los ntawm cov khoom siv kho vajtse schematic daim duab tsim, cov qauv logic, muaj pes tsawg leeg thaiv daim duab, thiab lwm yam. Los ntawm kev tsim cov tsheb thauj mus los interface module thiab kub humidity module interface, sab hauv LED zaub screen tuaj yeem yoog raws li cov kev xav tau ntawm ib puag ncig sib txawv, thiab muaj qhov zoo scalability thiab versatility.Tom qab ntau qhov kev ntsuam xyuas, sab hauv tsev coj zaub screen tau siv nyob rau hauv cov ntaub ntawv neeg nrog caij tshiab ntawm domestic metro, thiab cov nyhuv yog zoo.Qhov kev xyaum ua pov thawj tias lub vijtsam zaub tuaj yeem ua tiav cov khoom zoo li qub ntawm Suav cov cim thiab cov duab thiab ntau yam kev ua haujlwm zoo, thiab muaj cov yam ntxwv ntawm qhov ci ntsa iab, tsis muaj flicker, yooj yim logic tswj, thiab lwm yam, uas ua tau raws li cov kev xav tau ntawm cov tsheb subway. rauLED cov ntxaij vab tshaus.
Post lub sij hawm: Dec-16-2022