Ho phethahala ha boitsebahatso ba marang-rang ba gangue ea mashala le moralo oa sekala sa li-multihead ho ipapisitse le theknoloji e kenelletseng le ea fieldbus.

Mongoli: Smartweigh–Multihead Weighter

Selelekela Ka mokhoa o tsoelang pele oa nts'etsopele ea litsamaiso tse kentsoeng, ARM microprocessor ea 32-bit system RISC processing chip e nang le ts'ebetso e babatsehang, tšebeliso ea matla le theko e tlaase e bontša mokhoa o matla oa tsoelo-pele. Melemo ea bobeli e fana ka moralo o mocha oa phetoho bakeng sa theknoloji e tloaelehileng ea ho lokisa mashala. Ho kopanya sistimi e kenelletseng le thekenoloji ea khomphutha ea khomphutha, ho entsoe tlhaiso-leseling e ncha ea marang-rang ea mashala a mashala le gangue ea mashala le mochini o bekhang o ikemetseng oa li-multihead. Setšoantšo sa motheo sa foreimi ea boitsebiso ba marang-rang ba maqeba a mashala le gangue ea mashala le sekala sa li-multihead weigher se bonts'itsoe ho Setšoantšo sa 1.

Ho latela melaoana ea ts'ebetso ea ho lokisa mashala, software ea sistimi ena haholo-holo e na le likarolo tse tharo tse kholo tse latelang: (1) Karolo ea tlhahlobo: E na le moqomo oa phepelo, lebanta la conveyor, kh'amera ea ho lekola CCD, pokello ea matla a pokello ea data, jj. Hangata mashala a hloekileng a chekoang a na le malaka a mashala, 'me leshala la mashala le tlameha ho khethoa lebanta la conveyor. Khamera e shebileng ea CCD e romella litšoantšo tsa mashala le mashala a gangue ho pokello ea data ea motlakase oa potoloho bakeng sa phetoho, 'me litaba tse fetotsoeng tsa tlhahisoleseling li romelloa ho microprocessor ea ARM, e fetisetsoang ho PC ho latela CAN bese Internet bakeng sa qeto.

(2) Karolo ea boitsebahatso le ho qhekella: E entsoe ka komporo ea elektroniki, microprocessor ea ARM le tekanyo le taolo ea mochini le lisebelisoa tsa theknoloji. Ke senotlolo sa software eohle ea sistimi. Likahare tsa molora tsa mashala le mashala a gangue li baloa ho latela algorithm ea pono ea khomphutha. Kamora hore microprocessor ea ARM e khetholle le ho khetholla litene tsa mashala a gangue, boemo ba ts'ebetso bo etsoa. Haeba e tsejoa e le mashala, 'me ts'ebetso e sa sebetse ka mokhoa o itseng, mashala a hloekileng a tla oela ka kamoreng ea mashala' me a ntšetsoe ka ntle ho mocha oa tšireletso ea mashala.

Haeba e tsejoa e le gangue ea mashala, lets'oao la data la taolo le tla romelloa, 'me valve ea heke e tla buloa, e le hore lesela la mashala le oele ka har'a mocha oa tšireletso oa mashala. (3) Mokhatlo o hlophisitsoeng oa ho hlopha: E entsoe ka valve ea heke, bakete ea thepa e tala le lisebelisoa tsa tsamaiso ea matla a software, joalo-joalo Ho ea ka Inthanete ea CAN bese, ho hlahlojoa ka mokhoa o itekanetseng le ho tsamaisoa ha mashala le mashala gangue ka litsela tse 'maloa tse sireletsehileng li etsoa. Kenyelletso e qaqileng ea ts'ebetso ea chip AT91M40800AT91M40800 ke chip ea ts'ebetso e nang le ts'ebetso e theko e phahameng ho lihlahisoa tsa ATMEL tsa 16-bit/32-bit system microprocessor tse ipapisitseng le mantlha a ARM7TDMI. Senotlolo ke sistimi ea 32-bit e nang le ts'ebetso e ntle haholo ea RISC (Reduced Intro-duction Set Computer) system ea meralo, 'me e na le sistimi ea litaelo ea 16-bit (monoana o motona).

Ho ea ka sesebelisoa sa libese (EBI) sa "programmable controller", e hokahane hang-hang le mehopolo e fapaneng ea off-chip e kenyelletsang FLASH. Liboto tsa taolo ea li-vector tse ka sehloohong tse robeli le liboto tsa taolo ea tlhaiso-leseling ea sebaka sa marang-rang li ntlafatsa haholo ts'ebetso ea nako ea 'nete ea likarolo. sebopeho. AT91M40800 e kopanya motheo oa ARM7DMIARMThumbCPU, e fana ka 9kB on-chip SRAM, mela e robeli ea khetho ea li-chip, li-ports tsa I/O tsa tsamaiso tse 32, le bese ea tsamaiso ea 8-bit kapa 16-bit ea software ea mobile phone programmable. Sebaka se ka sebelisoang sebakeng sa ka hare 64MB, 2 UARTs, USART e 'ngoe le e' ngoe e na le liteishene tse peli tse inehetseng tsa boto ea ts'ireletso ea data ea kantle, e kentsoeng ka har'a lenaneo la taolo ea 1 timer, tse robeli li na le lintho tse tlang pele, e ka ikemela ka boto ea taolo ea ho emisa vector ea Masked, 4 tšitiso ea kantle. mehopolo, litšitiso tse 4 tsa kantle tse kenyelletsang tse tlang pele haholo, kopo ea ho sitisa latency e tlase, lisebelisoa tse 3 tsa oache ea kantle ea dijithale, 3 channel e sireletsehileng ea 16-bit timer/electronics counter. SJA1000 e tlameha ho ba le taolo e tloaelehileng le taolo ea mehloli ea tlhahisoleseling hobane ho na le sebaka se itseng lipakeng tsa jarete ea mashala, thaba ea mashala a gangue le workshop ea tlhahiso ea tlhahlobo.

Theknoloji ea segokanyimmediamentsi sa sebolokigolo e ka fetola litsamaiso tse nepahetseng tsa ho lekanya le taolo e arohaneng le e arolelanoang hore e be li-node, 'me e sebelise bese ea sistimi e le borokho ho li kopanya hore e be sistimi ea ts'ebeliso le sistimi ea taolo e ikemetseng e ka buisanang le ho fapanyetsana litaba tsa tlhahisoleseling le ho sebelisana. e mong le e mong mesebetsing ea letsatsi le letsatsi ea mokhoa oa ho laola othomathike. . Lebelo le phahameng la puisano la CAN ke 1Mbps, sebaka sa phetisetso ea hang-hang se fihla ho 10km (lebelo le ka tlase ho 8kbps), 'me ho ka kopanngoa mechine le lisebelisoa tsa 110, tse ka etsang tlhahlobo e eketsehileng e mengata le mesebetsi ea letsatsi le letsatsi. SJA1000 ke boto e ikemetseng ea taolo ea libese ea CAN e entsoeng ke Philips, e sebelisetsoang marang-rang a sebaka sa marang-rang a liboto tsa taolo likoloing le tikolohong e akaretsang ea tlhahiso ea indasteri. Mokhoa oa ho sebetsa (PeliCAN mode) o ka hokahanngoa habonolo le li-CPU tse fapaneng ho theha marang-rang a ts'ebetso ea CAN.

The hardware configuration communication interface scheme EPM7128 e sebelisetsoa ho fetola le ho hlophisa matšoao a data pakeng tsa li-sockets. Kenyelletso ea EPM7128 e tsoa ho lets'oao la data la khetho ea chip NCS2 ea AT91M40800, mohala oa ho tjhaja mohala oa D0~D7, aterese e qaqileng A0~A1, lets'oao le baloang la NRD, mongolo Lets'oao la data la NWE le lets'oao la data ea calibration ea RST. ba bile le tharollo ea ka hare e utloahalang le e pharaletseng, e hlahisang pontšo ea data ea liketso e hlokoang ke SJA1000. Ho ea ka taolo ea mohala oa motlakase oa chip e 'ngoe le e' ngoe ea ts'ebetso le kabelo ea aterese ea boema-kepe, e ka ngoloa e le kamano ea tatellano ea tatellano ea sephetho / sephetho sa transceiver ea libese ea CAN ka tsela e latelang: CAN=NCS2·A0CANALE=NCS2•A0•(NRD+NWE) CANRD=NRDCANWR=NWECANRST=NCS2+RST Nomoro e qaqileng ea aterese ea SJA1000 e khethiloeng ke 400000H, aterese e qaqileng ea nomoro ea boema-kepe ba data ke 400001H 'me aterese ea boema-kepe ke 400002H. Hobane lintlha tse qaqileng tsa lintlha tsa aterese tsa boto ea taolo ea CAN SJA1000 li ngatafalitsoe, lets'oao le qaqileng la data ea aterese ka bese ea sistimi e ka ts'oaroa ho latela moeli o oelang oa lets'oao la data la ALE.

Leha ho le joalo, bese ea aterese le tsamaiso ea AT91M40800 li hlahisoa ka boithaopo 'me li ke ke tsa hokahanngoa le bese e qaqileng ea aterese ea SJA1000 hang-hang. Ka hona, ho sebetsana le bothata ba socket ea SJA1000 le AT91M40800, senotlolo ke mokhoa oa ho romela letšoao la data le hlokehang bakeng sa ho sheba SJA1000 ho eona. Mokhoa o khethiloeng mona ke ho etsa ts'ebetso ea 'nete ea I/O ka makhetlo a 2. Ka lekhetlo la pele, boleng bo qaqileng ba aterese bo romelloa ho nomoro ea port ea aterese 400000H e le aterese e qaqileng ea mojule oa SJA1000.

Ka nako ena, khetho ea chip ha e khethiloe, 'me tlhahisoleseding ea data e kenngoa ka bese ea tsamaiso ea AD0-AD7. Ha u bala nomoro ea boema-kepe ba data 400001H ka lekhetlo la bobeli, SJA1000 e khethoa, 'me boleng ba aterese ba pele bo kentsoeng ho SJA1000 tlasa ts'ebetso ea lets'oao la data la ALE, mme CPU e sebetsa ho bala / ho ngola ts'ebetso ea nnete ho SJA1000. Calibration e ka aroloa ka tlhophiso ea software ea sistimi le phallo ea phallo ea lenaneo.

Letšoao la data ea calibration ea software ea RST le lets'oao la data la phallo ea phallo ea lenaneo li etsa ts'ebetso e utloahalang kapa e sebetsang ho EPM7128, e 'ngoe ea tsona e ka etsang hore SJA1000 e be le tekano e tšepahalang. Bakeng sa ho netefatsa ho ts'epahala ha puisano ea data, hokela sesebelisoa sa "terminal" sa 120Ω ho sesebelisoa se seng le se seng sa libese tsa CAN ho sebetsana le khanyetso e ts'oanang ea libese. Pini ea TX1 ea SJA1000 e thehiloe ho latela mohanyetsi oa 10k8, 'me lets'oao la pulse la pinana ea RX1 le tlameha ho bolokoa kaholimo ho 0.9Vcc.

Ho seng joalo, lets'oao le utloahalang la pulse le hlokoang ke bese ea CAN le ke ke la hlahisoa. Haeba sebaka sa puisano se le khuts'oane 'me tšusumetso ea tikoloho ea tlhaho e nyane, potoloho ea matla a ts'ireletso ea optical 6N137 e ka tloheloa. Ka nako ena, VREF ea 82C251 e ka kopanngoa le phini ea RX1 hang-hang, kahoo e nolofatsa potoloho ea matla. Puisano ea data lipakeng tsa ARM microprocessor le CAN bese AT91M40800 e sheba matšoao a data a off-chip memory le likarolo tsa kantle ho latela sokete ea libese ea kantle (EBI). EBI e sebelisa liprothokholo tse fapaneng tsa ho bala, tse ka phethelang potoloho e le 'ngoe ea likarolo tsa kantle. Ho bala ka nako, ho hlophisoa ha EBI moralong oa moralo ke: (1) khetha 8-bit system bese; (2) khetha protocol ea ho bala ka mokhoa o ikhethileng; (3) khetha nako ea ho leta nako ea potoloho e robeli; (4) chip khetha line NCS2 Aterese e qaqileng ea motheo ke 400000H.

Phallo eohle ea lenaneo e ngotsoe ka puo ea C ea laeborari ea AT91, e nang le melemo ea ho bala ka matla, ho bonolo haholo ho e fetisetsa, nts'etsopele e bonolo le moralo, le phetoho e bonolo. Ho tsosolosa hantle ke motheo oa ts'ebetso e tloaelehileng ea phallo ea lenaneo. Ho tsosolosoa ha software ea tsamaiso ke haholo-holo ho tsosolosa microcontroller ea AT91M40800 le SJA1000 (SJA1000 e sebetsang ka kristale oscillator circuit 16M). Mehato ea ho tsosolosa e bontšoa ho Setšoantšo sa 3. Liphetho Ho tsebahatsa marang-rang le mochine o itekanetseng oa ho lekanya litene tsa mashala a mashala a entsoeng ka AT91M40800 processing chip ea ARM microprocessor le CAN bus control board SJA1000 li ile tsa khethoa. Ha ho bapisoa le Inthanete ea libese ea CAN e sebelisoang ke MCU, ke bese ea buka ea CAN. mokhoa oa tšebetso.

Software ea sistimi ea tharollo e thehiloeng ho sistimi e kenelletseng ea ts'ebetso ea ARM microprocessor le bese ea CAN e na le ts'ebetso e ntle haholo, e ts'eptjoang le ea ho hokahanya, e fanang ka mokhoa o mocha oa theknoloji ea khale ea ho lokisa mashala.

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