Kuzindikira kuzindikiritsa pa intaneti kwa malasha gangue ndi kapangidwe ka multihead weigher kutengera ukadaulo wophatikizidwa ndi fieldbus

Wolemba: Smartweigh-Multihead Weighter

Mawu Oyamba Ndi kachitidwe kachitukuko kopitilira kachitidwe kophatikizidwa, ARM microprocessor ya 32-bit system RISC processing chip yokhala ndi magwiridwe antchito abwino kwambiri, kugwiritsa ntchito mphamvu ndi mtengo wotsika zikuwonetsa chitukuko champhamvu. Ubwino wa awiriwa umapereka ndondomeko yatsopano yosinthira teknoloji yokonzekera malasha. Kuphatikiza makina ophatikizika ndiukadaulo wamakompyuta, chizindikiritso chatsopano chapa intaneti cha minyewa ya malasha ndi gangue yamalasha ndi choyezera chamutu chambiri chimapangidwa. Chojambula chodziwika bwino chazidziwitso chapaintaneti cha minyewa ya malasha ndi gangue ya malasha ndi choyezera chamutu chambiri chodziwikiratu chikuwonetsedwa pa Chithunzi 1.

Malinga ndi malamulo a ndondomeko yokonzekera malasha, mapulogalamu a dongosololi amakhala ndi zigawo zazikulu zitatu izi: (1) Gawo loyang'anira: Limakhala ndi bin yodyetsa, lamba wotumizira, kamera yowunikira ya CCD, dera losonkhanitsa deta, ndi zina zotero. Malasha oyera omwe amafukulidwa nthawi zambiri amakhala ndi gangue ya malasha, ndipo malasha ayenera kusankhidwa pa lamba wotumizira. Kamera yowunikira ya CCD imatumiza zithunzi za malasha ndi malasha a gangue ku data yosonkhanitsira magetsi kuti atembenuke, ndipo zomwe zimasinthidwa zimatumizidwa ku microprocessor ya ARM, yomwe imatumizidwa ku PC molingana ndi CAN bus Internet kuti ithetse.

(2) Chizindikiritso ndi kusintha gawo: Amapangidwa ndi makompyuta apakompyuta, ARM microprocessor ndi kuyeza ndi kuwongolera ukadaulo makina ndi zida. Ndilo chinsinsi cha mapulogalamu onse adongosolo. Phulusa la malasha ndi malasha gangue amawerengedwa molingana ndi algorithm ya vision optimization ya kompyuta. Pambuyo pa microprocessor ya ARM izindikiritsa ndikusiyanitsa njerwa za malasha, ntchitoyo ikuchitika. Ngati azindikirika ngati malasha, ndipo ntchitoyo ilibe mphamvu pang'ono, malasha aukhondowo amagwera m'chipinda cha malasha ndikuwatulutsa kuchokera munjira yachitetezo chamalasha.

Ngati imadziwika kuti ndi malasha, chizindikiro chowongolera chidzatumizidwa, ndipo valavu yachipata idzatsegulidwa, kotero kuti gangue ya malasha idzagwa mu njira yachitetezo cha malasha. (3) Gulu losankhira molunjika: Zimapangidwa ndi valavu yachipata, ndowa zopangira zida ndi zida zogawa zamagetsi zamagetsi, etc. Malinga ndi intaneti ya CAN bus, kuyang'ana basi ndi kunyamula malasha ndi malasha gangue munjira zingapo zotetezeka zimachitika. Kufotokozera mwatsatanetsatane kachipangizo kachipangizo ka AT91M40800AT91M40800 ndi chipangizo chosinthira chomwe chimakhala ndi mtengo wokwera kwambiri pazogulitsa za ATMEL's 16-bit/32-bit system microprocessor zochokera pachimake cha ARM7TDMI. Mfungulo ndi dongosolo la 32-bit lomwe lili ndi machitidwe abwino kwambiri a RISC (Reduced Intro-duction Set Computer), ndipo ali ndi dongosolo la 16-bit (chala chachikulu).

Malinga ndi socket yakunja yama bus socket (EBI) ya owongolera omwe angakonzedwe, imalumikizidwa nthawi yomweyo ndi kukumbukira kwamitundu yosiyanasiyana kuphatikiza FLASH. Ma board owongolera ma vector omwe ali patsogolo asanu ndi atatu komanso ma board owongolera zidziwitso za pa-chip field amathandizira kwambiri magwiridwe antchito munthawi yeniyeni. khalidwe. AT91M40800 imaphatikiza maziko a ARM7DMIARMThumbCPU, imapereka 9kB pa-chip SRAM, mizere isanu ndi itatu yosankhidwa ndi chip, madoko 32 owongolera owongolera a I/O, ndi basi ya 8-bit kapena 16-bit yowongolera pulogalamu yamafoni am'manja. Mawonekedwe opezeka M'nyumba 64MB, 2 USARTs, USART iliyonse ili ndi njira ziwiri zodzipatulira zachitetezo chazidziwitso zachitetezo cha data, chowongolera chowongolera chokhazikika 1 timer, zisanu ndi zitatu zili ndi zofunika kwambiri, zitha kukhala zodziyimira pawokha Masked space vector termination control board, 4 kusokoneza kwakunja. zokumbukira, zosokoneza 4 zakunja kuphatikiza zofunika kwambiri, pempho locheperako locheperako, zolowetsa 3 za wotchi yakunja ya digito, 3 njira yotetezedwa ya 16-bit timer/electronic counter. SJA1000 iyenera kukhala ndi kasamalidwe koyenera komanso kasamalidwe ka zidziwitso chifukwa pali mtunda wina pakati pa bwalo la malasha, phiri la malasha la gangue ndi msonkhano wopanga zowonera.

Ukadaulo waukadaulo wamakompyuta ukhoza kutembenuza njira zoyezera komanso zowongolera zodziwika bwino kukhala ma node, ndikugwiritsa ntchito mabasi ngati mlatho kuti uwaphatikize kukhala pulogalamu yogwiritsira ntchito komanso makina owongolera omwe amatha kulumikizana wina ndi mnzake ndikusinthanitsa zidziwitso ndi kugwirizana. ndi wina ndi mzake mu ntchito za tsiku ndi tsiku za dongosolo lodziletsa. . Kuthamanga kwambiri kwa CAN kulankhulana ndi 1Mbps, mtunda wotumizirana mwamsanga ndi 10km (liwiro liri pansi pa 8kbps), ndipo mpaka makina a 110 ndi zipangizo zingathe kulumikizidwa, zomwe zingathe kuchita zowunikira zambiri ndi ntchito za tsiku ndi tsiku. SJA1000 ndi bolodi yodziyimira payokha ya CAN yopangidwa ndi Philips, yomwe imagwiritsidwa ntchito popanga ma netiweki am'deralo opanda zingwe pama board owongolera pamagalimoto komanso malo opangira mafakitale. Njira yogwirira ntchito (PeliCAN mode) imatha kulumikizidwa mosavuta ndi ma CPU osiyanasiyana kupanga CAN ntchito Internet.

Mawonekedwe a hardware kasinthidwe kawonekedwe kapangidwe ka EPM7128 amagwiritsidwa ntchito potembenuza ndikusintha zizindikiro za data pakati pa sockets. Kulowetsa kwa EPM7128 kumachokera ku chizindikiro chosankha chip NCS2 cha AT91M40800, chingwe chopangira foni yam'manja D0~D7, adilesi yatsatanetsatane A0~A1, chizindikiro chowerengedwa NRD, kulemba Chizindikiro cha data cha NWE ndi chizindikiro cha RST adakumana ndi yankho lamkati lomveka komanso lokwanira, zomwe zidapangitsa kuti chizindikiritso cha data chichitike chofunikira ndi SJA1000. Malinga ndi kuwongolera kwa chingwe chamagetsi cha chip chilichonse chosinthira ndi kagawo ka adilesi ya doko, zitha kulembedwa ngati kulowetsa/kutulutsa koyenera kwa ma transceiver a basi ya CAN motere: CAN=NCS2·A0CANALE=NCS2•A0•(NRD+NWE) CANRD=NRDCANWR=NWECANRST=NCS2+RST Nambala ya adilesi ya SJA1000 yosankhidwa ndi 400000H, adilesi yatsatanetsatane ya doko la data ndi 400001H ndipo adilesi yoyeserera ndi 400002H. Chifukwa chidziwitso chatsatanetsatane cha ma adilesi a CAN control board SJA1000 ndi chochulukira, chizindikiro chatsatanetsatane cha adilesi pa basi yamakina chimatha kulumikizidwa molingana ndi kugwa kwa chizindikiro cha data cha ALE.

Komabe, mabasi a adilesi ndi ma bus a AT91M40800 amaperekedwa paokha ndipo sangathe kulumikizidwa ndi ma adilesi atsatanetsatane a SJA1000 nthawi yomweyo. Chifukwa chake, kuthana ndi vuto la socket la SJA1000 ndi AT91M40800, fungulo ndimomwe mungatumizire chizindikiro cha data chomwe chimafunikira kusakatula SJA1000 mmenemo. Njira yomwe yasankhidwa apa ndikuchita ntchito yeniyeni ya I/O mu 2 nthawi. Kwa nthawi yoyamba, mtengo watsatanetsatane wa adilesi umatumizidwa ku adilesi yatsatanetsatane ya 400000H monga adilesi yatsatanetsatane ya gawo la SJA1000.

Panthawiyi, kusankha kwa chip sikunasankhidwe, ndipo chidziwitso cha deta chimayikidwa pa basi ya AD0-AD7 system. Mukasakatula nambala yachidziwitso cha data 400001H kachiwiri, SJA1000 imasankhidwa, ndipo mtengo wa adilesi woyamba umayikidwa mu SJA1000 pansi pa ntchito ya chizindikiro cha data cha ALE, ndipo CPU imagwira ntchito yowerenga / kulemba pa SJA1000. Calibration akhoza kugawidwa mu dongosolo mapulogalamu calibration ndi dongosolo otaya calibration.

Chidziwitso cha data cha RST ndi pulogalamu yoyezera ma data ya pulogalamuyo imagwira ntchito momveka bwino kapena yothandiza mu EPM7128, zomwe zitha kupangitsa SJA1000 kukhala yodalirika. Kuti mutsimikizire kudalirika kwa kulumikizana kwa data, lumikizani cholumikizira cha 120Ω chowunikira pamwamba pa chipangizo chilichonse cha CAN kuti mukwaniritse kukana kofananira ndi basi. Pini ya TX1 ya SJA1000 imakhazikitsidwa molingana ndi 10k8 resistor, ndipo chizindikiro cha pini ya RX1 chiyenera kusungidwa pamwamba pa 0.9Vcc.

Kupanda kutero, siginecha yomveka bwino yofunikira ndi basi ya CAN siyingapangidwe. Ngati mtunda wolankhulana uli waufupi komanso mphamvu ya chilengedwe ndi yaying'ono, mphamvu yamagetsi yamagetsi yamagetsi 6N137 ikhoza kuchotsedwa. Panthawiyi, VREF ya 82C251 ikhoza kulumikizidwa ndi pini ya RX1 nthawi yomweyo, potero kumathandizira dera lamagetsi. Kulankhulana kwa data pakati pa ARM microprocessor ndi CAN basi AT91M40800 kumasakatula ma data a memory off-chip ndi zida zakunja molingana ndi socket yakunja ya bus (EBI). EBI imagwiritsa ntchito ma protocol osiyanasiyana osakatula, omwe amatha kumaliza kuzungulira kumodzi kwazinthu zakunja. Kusakatula nthawi, kukhazikitsidwa kwa EBI mu dongosolo la mapangidwe ndi: (1) sankhani basi ya 8-bit system; (2) kusankha specifications kuwerenga protocol; (3) kusankha eyiti mkombero nthawi kudikira nthawi; (4) chip sankhani mzere NCS2 Maziko mwatsatanetsatane adilesi ndi 400000H.

Kuyenda kwa pulogalamu yonse kumalembedwa m'chinenero cha C cha laibulale ya AT91, yomwe ili ndi ubwino wowerengera mwamphamvu, yosavuta kuyikapo, chitukuko chophweka ndi mapangidwe, ndi kusintha kosavuta. Kukonzanso koyenera ndiko maziko a ntchito yabwinobwino ya pulogalamuyo. Kukonzanso kwa pulogalamu yamakina makamaka kukonzanso kwa AT91M40800 microcontroller ndi SJA1000 (SJA1000 working crystal oscillator circuit 16M). Masitepe okonzanso akuwonetsedwa mu Chithunzi 3. Zotsatira Chidziwitso cha pa intaneti ndi choyezera chodziwikiratu cha njerwa za malasha zopangidwa ndi AT91M40800 processing chip ya ARM microprocessor ndi CAN bus control board SJA1000 zinasankhidwa. Poyerekeza ndi chikhalidwe cha CAN bus Internet chomwe chimayendetsedwa ndi MCU, ndi bus ya CAN. opareting'i sisitimu.

Mapulogalamu opangira mayankho otengera makina ophatikizika a ARM microprocessor ndi CAN basi ali ndi kuthekera kopambana, kudalirika komanso kulumikizana, zomwe zimapereka njira yatsopano yaukadaulo wakale wokonzekera malasha.

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