Isikali se-electronic multihead esinembile kakhulu nesihlakaniphile

Umbhali: Smartweigh– Isisindo Sezinhloko Eziningi

1 Isingeniso Ngokuthuthuka okusheshayo kobuchwepheshe bolwazi lwe-elekthronikhi besimanje kanye nobuchwepheshe bolwazi lwe-elekthronikhi, izikali ze-elekthronikhi eziningi ziye zasetshenziswa kabanzi emikhakheni eyahlukene yezenhlalo nezomnotho. Imisebenzi yefomula neminye imisebenzi ithandwa kakhulu ngamakhasimende. Isihluthulelo sesisindo se-elekthronikhi esinezinhloko eziningi sakhiwe yisoftware ezimbili ezinkulu zesistimu.——Uhlelo lokuhlola nokucubungula idatha kanye nekhasi lobuchwepheshe bokusebenzisana kwabantu nekhompyutha zakhiwe uhlelo lokuhlola nokucubungula idatha. Imiphumela elinganisiwe iboniswa ngaphansi kokulawulwa yiwo wonke umuntu, njengolwazi nokukopisha. Lesi sihloko sethula kakhulu ingxenye yokuhlola yesofthiwe yesistimu ngokuningiliziwe, kufaka phakathi ukulinganiswa okuzenzakalelayo kwesekethe yokunikezwa kwamandla yenzwa. Uhlelo lokuklama ukulinganiswa kwenzwa oluphendulayo kanye nomsebenzi walo ophakathi we-cpu. 2 Ukuxhumana komklamo wohlelo jikelele. Isihluthulelo socwaningo lwesayensi yindlela yokuqedela uhlelo oluhlakaniphile lwesofthiwe yesistimu. Uhlelo lokuqapha isisindo se-multihead luqukethe kakhulu i-amplifier yokusebenza kwenzwa, ukutholwa kwedatha (ukuguqulwa kwe-analog/digital) isekethe yokunikezwa kwamandla, izingxenye zokulawula eziphakathi, isekethe yokunikezwa kwamandla empendulo, isinxephezelo sangaphandle kanye nohlelo lokusebenza lokunikezwa kwamandla okushintsha.

Umsebenzi wesekethe yokunikezwa kwamandla ukufaka inombolo yenani lesisindo eliphelele ngenombolo ye-voltage yokusebenza eguquguqukayo kancane ngokuya nge-resistance strain gauge transmission flap, bese uyikhulisa ibe yidatha ye-voltage yokusebenza eyamukelwe yi-chip efanele yokucubungula ukuguqulwa kwe-analog/digital. Uma usayina futhi wenze ukuguqulwa kwe-A/D, iphutha lesistimu yephaneli yezinsimbi libangelwa kakhulu yile ngxenye, ngakho-ke uhlelo lokuklama lwale ngxenye luhlobene nokunemba kwesofthiwe yesistimu yonke. Iyunithi yokucubungula ephakathi ayinabo uxanduva lokusebenza nokusebenza kwesofthiwe yesistimu yonke, futhi yenza indlela yokucubungula idatha, ukulinganisa okuzenzakalelayo, ukuguqulwa okuzenzakalelayo kwenqubo ye-It, ukushintshwa kwedivayisi yokudlulisa isakhiwo esabelayo Isekethe yokunikezela amandla eqhuba imiyalelo kanye nokudluliselwa kwedatha phakathi kwe-CPU yesofthiwe yesistimu yekhasi. Isofthiwe yesistimu yokunikezela amandla eshintshayo inikeza uhlelo oluhle kakhulu lokunikezela kwamandla kanye nokusabalalisa ukuze kusebenze kahle isofthiwe yesistimu, futhi inikeza izinga eliphezulu lokunikezwa kwamandla ebhuloho lokushintsha amandla. 3 Ukuthuthukiswa kwehadiwe Isihluthulelo sokuthuthukiswa kwehadiwe yesistimu yokuqapha isikali se-elekthronikhi sihlanganisa izingxenye ezi-3: i-amplifier yokusebenza, isekethe yokunikezela amandla okuguqulwa kwe-analog/digital, i-CNC machine tool resistor I-chip ehlanganisiwe yokucubungula i-amplifier yokusebenza i-AD525C esetshenzisiwe iboniswe kuMfanekiso 2. I-voltage yokusebenza ye-output drift kufanele ibe ngaphansi kuka-25. I-voltage yokusebenza ye-temperature drift kufanele ibe ngaphansi kune-common rejection ratio CMR, engaba ngu-90dB lapho inzuzo evamile inkulu kuneyohlelo olukhulu oluhlukile. 0.003^ (uma i-G=l). Njenge-amplifier yomsindo, i-AD524 iqukethe ama-resistors anokunemba okuphezulu kwenqubo ye-tt1WG=l, 10, 100 kanye ne-1000 pin-type SI: yenza ukuphela kwe-JWRG2 kwepayipi kube kukhulu futhi kuhlobene Ngemva kokuthi iphini yokukhetha ye-multiplier ixhunywe kusengaphambili (ngalesi sikhathi, i-RG1 ayixhunyiwe ekhaleni), umsebenzi wokukhulisa we-relative magnification ungaqedwa. Ngaphandle kwalolu hlobo lwendlela yokufanisa yangaphakathi, lapho inani lokuzuza elicacisiwe lisuka ku-1 liye ku-100.

Uma ushintsho luqhubeka, i-AD524 nayo inenye indlela yokulawula inani lokuzuza. I-sliding rheostat RG isetshenziselwa ukuxhuma i-tube 3 (RG2) ye-chip yokucubungula ye-AD524 ku-pin 16 (RGD), kanti inani lokumelana elihambisana ne-G RG yi-RG-40K/(Gl)3.2 digital converter power supply circuit ye-RG-40K/(Gl)3.2. Kulesi simiso sokuklama, kukhethwa i-14-bit multiple S! analog/digital converter MAX194 ekhiqizwe yi-MAXIM. I-chip yokucubungula ine-capacitor-type DACSPWM, i-Sampling mouthpiece holder, ama-10 calibration DAC, ukuxhumana kwe-serial kanye nokulawula akugcini nje ngokuba nezici zokusebenza kwesivinini esiphezulu, ukunemba okuphezulu, ukusetshenziswa kwamandla, njll., kodwa futhi ne-internal calibration power supply circuit yayo ilinganisa ukulingana kanye nomehluko we-offset, okungalungiswa ngaphandle kokulungiswa kwangaphandle. Gcina zonke izici ezingu-18 ezihleliwe ngaphakathi kwebanga lokushisa elivumelekile. Izici zokuxhumana kwe-serial zenza i-IB ixhumeke kumabhodi amaningi okulawula izibonakaliso ngokushesha, okwenza kube lula kakhulu isimiso se-system software circuit. Ngaphezu kwalokho, ilingisa ukunikezwa kwamandla okushintsha i-analog kanye nokushintsha idatha. Isakhiwo sokuhlukaniswa kokunikezwa kwamandla sinciphisa kakhulu ukulimala kokuhlanganiswa komsindo wedatha. Izici zayo ezibalulekile yilezi: isinqumo sesikrini singama-bits ayi-14: isizathu sokuphambuka kohlelo oluhlanganisiwe lwe-discrete singu-0.33%, kanti isilinganiso sesiginali yedatha kumsindo kanye nozimele olahlekile singu-82dB; 9. Uma i-voltage yokusebenza ebhekiselayo ingu-+9V, lapho i-voltage yokusebenza yokufaka ishintsha kusuka ku-0 kuya ku-9V noma ku-5 kuya ku-+9V, ivolumu yedatha yokukhipha iyashintsha kusuka ku-OOOOH kuya ku-3FFFH. Ukugeleza okuhleliwe kusengaphambili kusetshenziselwa ukulawula ushintsho lwenani layo lokumelana. Lolu hlelo lokuklama lukhetha i-non-volatile CNC machine tool resistor X9241 eyenziwe yi-Xicor Corporation, kufaka phakathi ama-resistor arrays angu-4, i-array ngayinye kufaka phakathi amamojula angu-63 e-resistor, Phakathi kwemojula ngayinye nama-node angu-2, kunezindawo zokuthinta ezingaphequlwa yimojula yokudonsa. Indawo yemojula yokuhudula ku-array ilawulwa yikhasimende ngokuya ngesokhethi yebhasi yochungechunge enama-wire amabili, futhi ikheli eliningiliziwe lengxenye ebonakalayo liyi-A0 -A3 key ekugcineni ukuchaza——I-X9241 iqhathanisa ukuhlaziywa kokugeleza kwedatha kokuxhumana kwe-serial nesimo se-terminal yokufaka ikheli enemininingwane. Uma wonke ama-bits ekheli anemininingwane amane ephumelela kahle, iqembu lizophendula ngempendulo ekhombisa ukuthi likhethiwe. Futhi i-X9241 ngayinye inama-arrays ama-resistor angu-4, ngakho-ke imigqa emibili ye-I/O ye-CPU ingasebenza kuze kufike kuma-arrays ama-resistor angu-64 esewonke, futhi i-array ngayinye ye-resistor ihlotshaniswa nerejista ye-drag terminal (WCR) namakheli amane e-8-bit register, wonke angalayishwa noma afundwe yikhasimende.

Okuqukethwe kwememori yokubala i-drag terminal (WCR) kulawula i-bit JL ye-drag terminal ku-resistor array. Esakhiweni somyalo se-X9241, ngaphezu kwenkumbulo yamandla okufunda nokubhala kanye nomyalo wokudlulisa idatha phakathi kwememori ngayinye, kukhona nomyalo ozovumela i-drag terminal (WCR) i-S/minus umyalo weyunithi omncane INC-WIPER, isikhathi ngasinye lapho i-INC-WIPER isetshenziswa, okungukuthi, i-drag terminal izohambisa eyodwa kumamojula angama-63 okumelana, okubonisa uhlelo lokuklama lohlelo lokulungisa oluyi-zero ukugeleza. Ilula kakhulu, izimiso zesistimu ezi-4 1) Setha kabusha“Ngemuva kokuthi isofthiwe yesistimu ivuliwe, ikhambi lokusetha kabusha lenziwa kuqala. Uma kungekho myalelo wesistimu ovela ekhasini lobuchwepheshe bokuxhumana kwephaneli yokulawula-umuntu-ikhompyutha, isofthiwe yesistimu izoqala ilayishe igama lesimo ku-EEPROM njalo lapho ukulinganisa kuqalwa, futhi yenze ukuhlonza. Sebenzisa ngokuzenzakalelayo amapharamitha ayinhloko njengesethi yokuqala noma indlela yesiteshi esiphephile, inani lesisekelo, kanye ne-gain ebekwe ngaphambi kokulinda kwangaphambilini. Bese i-CPU inikeza umyalo wokuguqula i-analog switch yeziteshi eziningi i-AD7502 ibe isiteshi sesine esiphephile, kanye ne-input terminal ① kanye ne-② ye-instrument and equipment amplifier I-AD524 i-short-circuit, futhi i-CPU ilawula ukumelana kwethuluzi lomshini we-CNC ngokuya ngohlelo oluhlelwe kusengaphambili. Inani lokumelana le-resistor engu-10K kudivayisi i-X9241 liyashintshwa, futhi ukulungiswa kwe-othomathikhi kwe-admplifier yemishini yezinsimbi ze-admulator ye-adminulator ye-admin ehlelwe kabusha kwenziwa. 2) Ukulungiswa kwe-Sensor" Lapho opharetha enquma ukuthi i-electronic multihead weigher ayinawo umthwalo, umyalo wokulungiswa kwe-sensor zero utholakala ngokuya ngekhasi lobuchwepheshe bokuxhumana kwabantu nekhompyutha, futhi i-CPU yamukela ulwazi oludluliselwa yi-CPU yekhasi lobuchwepheshe bokuxhumana kwabantu nekhompyutha ngokuya ngokuxhumana okulandelanayo. , hlukanisa inombolo yeqembu le-sensor okumele ilungiswe, lungisa i-resistor X9241 ehambisanayo yethuluzi lomshini we-CNC, yenza ukulungiswa kokuqala kanye nokulungiswa okuncane ngokulandelana, futhi isekethe yamandla yenza umsebenzi wansuku zonke wokulungiswa kwe-othomathikhi kwe-sensor. 3) Ukulungiswa kwe-zero software yesistimu, Ngemva kokuthi i-CPU ilungise i-gain value amplifier kanye ne-sensor (njengoba kudingeka) yesilawuli esilungisekayo, i-CPU iqoqa inani elisele le-voltage yokusebenza le-zero point ngokusho kwe-A/D converter MAX194 bese iyigcina ku-EEPROM * linda kuze kube yilapho konke sekujwayelekile Uma ukala ingane, susa leli nani futhi. "Uma indawo yemvelo ishintsha kakhulu futhi i-CPU ingawutholi umyalo wokulungiswa okungu-zero, ikhasimende lingakhipha umyalo wokulungiswa okungu-zero noma nini nanoma kuphi ngokusho kwekhasi elisebenzisanayo lomshini, ukuze isisindo se-electronic multihead siphinde silinganiswe. Ngaphezu kwalokho, ngephutha ledatha elingu-zero point elikhiqizwe yi-A/D, i-MAX194 izolungisa ngokuzenzakalelayo iphuzu eliyisiphukuphuku le-A/D ngaphakathi kwama-50ms okuqala kwamandla ngamunye. I-CPU ingasebenzisa futhi i-A/D converter MAX194 ukwenza ukusebenza kwangempela kokulungiswa. "Ngokuvamile, lesi sisindo se-electronic multihead sinomsebenzi wokulungiswa okungu-zero okuzenzakalelayo nokwesikhathi sangempela kwesofthiwe yesistimu enhle kakhulu" ukuqinisekisa umsebenzi wayo wokulinganisa onembile kakhulu. #4 ) Umsebenzi wokuphendula inzwa. Le software yesistimu inomsebenzi ohlukile wokuphendula inzwa, okwenza isofthiwe yesistimu ibe nobubanzi obujwayelekile kakhulu kusukela kumakhilogremu ambalwa kuya kumathani amaningi. Ubuchwepheshe obuyinhloko ukulawula okuhleliwe. Lapho ikhasimende likhetha uhlobo oluthile lwenzwa ebangeni lokulinganisa ngokuya ngenhloso yalo yohlelo lokusebenza, noma lapho inzwa ishintshwa ngenxa yamaphutha avamile (noma izinguquko enqubweni yokukhiqiza), Ochwepheshe bezobuchwepheshe bephrojekthi yobunjiniyela (noma ikhasimende) badinga kuphela ukuxhuma inzwa nesofthiwe yesistimu, ngokusho kwekhasi lobuchwepheshe bokusebenzisana kwabantu nekhompyutha, bakhiye umyalo kanye nobubanzi bendawo, bese bebeka ingxenye ejwayelekile ye-KG noma ye-ton (ikhodi engekho) epuletini lokulinganisa lesofthiwe yesistimu, bese imodeli ye-A/D. I-digital converter ifunda inani le-mV/kg noma i-mV/t njengenani eliyisisekelo bese iligcina ku-EEPROM yesofthiwe yesistimu ukuze isetshenziswe lapho ikala.

Ngaphezu kwalokho, i-CPU ibala futhi icacise inani lokuzuza lenani lokuzuza lesilawuli esihleliwe le-amplifier yezinsimbi nemishini i-AD524 ngokuya ngenani lesisekelo kanye namapharamitha ayinhloko ebanga lokulinganisa elidluliselwa kusuka kusoftware yesistimu yobuchwepheshe bokusebenzisana kwabantu nekhompyutha i-CPU. I-CPU isebenzisa i-resistor engu-2K ku-potentiometer yedijithali i-X9241. Yenza i-amplifier yenani lokuzuza lesilawuli esihleliwe isebenze ngaphansi kwendinganiso entsha yenani lokuzuza, futhi yenze ukulinganiswa nokulinganiswa kobubanzi bokulinganisa be-transmitter. Ngaphezu kwenani lesisindo sento esikaliwe, ulwazi luphinde lube nochungechunge lwemisebenzi efana nokusetha isiteshi sokuphepha, ukusetha inani lesisekelo, ukusetha ibhizinisi, ukusetha inani lokuzuza, ukulungiswa okuzenzakalelayo kwe-zero kanye nokugcinwa kwesimo sokusetha okuzenzakalelayo. 5.1 Umklamo oyinhloko wohlelo Imisebenzi ohlelweni lokuqapha isisindo se-electronic multihead yonke ivuselelwa yikhasimende ngokuya ngephaneli yokusebenza kusoftware yesistimu yobuchwepheshe bokusebenzisana kwabantu nekhompyutha. Ngakho-ke, uhlelo lokuqapha kanye nesofthiwe yesistimu esebenzisanayo ithembise amaphrothokholi alandelayo; ukusebenzisana kwabantu nekhompyutha Umsebenzi ngamunye wesofthiwe yesistimu yobuchwepheshe usethelwe ukuhambisana ne-byte, ebizwa ngokuthi igama lomyalo. Uma iphaneli yokusebenza yenza umsebenzi wangempela womsebenzi othile, igama lomyalo elihlobene lisunduzwa kusuka kusofthiwe yesistimu yobuchwepheshe bokuxhumana kwabantu nekhompyutha, futhi uhlelo lokuqapha luyamukela ngokusebenzisa ukuphela kwesixhumi esibonakalayo esilandelanayo (ngoba uhlelo lwenqubomgomo yokuhlola ludinga ukusebenzisa isisindo kanye nokucindezela isisindo. Ngemva kokusebenza kwangempela komphumela, lungamukelwa kuphela ngendlela yokuqeda kodwa hhayi ngendlela yombuzo), ngemuva kokwenza ukuhlonza kwemiyalelo 'iya ku-assembler yento yesevisi ehlobene.

Ngaphezu kwalokho, igama lomyalo nalo lilayishwa ku-EEPROM, futhi liba yisimo okufanele silayishwe ngemva kokulinganiswa. Buyekeza i-EEPROM ekugelezeni kohlelo, bese ulayisha igama lesimo se-EEPROM futhi ngemva kokubuyela ekuqaleni kokugeleza kohlelo okuzimele. Ngemva kokuqala kwesofthiwe yesistimu ngayinye kanye nokusetha kabusha ipharamitha eyinhloko, uhlelo oluzenzakalelayo lokulungisa i-amplifier lunikezwa kanye, futhi uhlelo lomthombo kumele luphume emjikelezweni onesisindo futhi luqale kusukela ekuqaleni ngemva kwesikhathi ngasinye lapho imbobo yomugqa iqediwe. Indawo yokulinda yokugeleza kohlelo lokuphela iwukubuyela endaweni yokuqala yokuhlanza, ngakho-ke i-flag bit eyengeziwe i-7QH isethwe ukuhlukanisa ukuthi ukuphazamiseka kokuphela kuvuliwe noma cha. Uma kwenzeka, kuzophuma ohlelweni lomjikelezo wesisindo bese kusethwa kabusha amapharamitha ayinhloko.”5.2 Umklamo wezinhlelo ezincane-5. I-amplifier ye-XI ilungiswa ibe yisigamu se-assembler. Okokuqala, i-CPU ikhetha isiteshi sesi-4 sokuvula kwesikhunta esineziteshi eziningi. Umphumela uba ukuthi ama-terminal amabili okufaka e-chip ye-amplifier afinyeziwe futhi isignali yedatha ye-voltage yokufaka ingu-zero, futhi ukukhulisa kuyenziwa. Inani lokukhipha lemitha kufanele lilungiswe——i-AC bias voltage. Beka ikhanda lokudonsa le-X9241 lapho i-terminal eqondile ye-amplifier output positive bias voltage, okungukuthi, thumela i-OOH^ ku-WCRC drag terminal ephambene (inkumbulo yokubala) bese uvumela ukuguqulwa kwe-A/D Ukugeleza kohlelo ukwengeza nokukhipha ulwazi lwedatha olutholiwe (ngaphezu kwe-1FFFH) kanye ne-1FFFH (1FFFH inani ledatha yokukhipha lapho i-voltage yokusebenza ye-ADCMAX194 ilingisa izinga lokugeleza kokufaka elingu-zero, futhi inquma ukuthi umehluko uyinombolo enhle, uma ilungile Inombolo iphindaphindwa i-WCR kanye ne-KA/D kanye nokusebenza kwangempela kokwengeza kanye ukususa, kuze kube yilapho umphumela womehluko u-zero noma uphela lapho ushintsha usuka kokuhle uye kokubi. 5-2.2 Ukugeleza kohlelo lwe-Sensor Sm Umklamo wokuhlela wokulungiswa kwe-sensor zero kanye ne-amplifier Umqondo wokulungiswa kwe-zero uyafana. Umehluko uncike ekutheni; i-CPU ayidingi ukusetha inombolo ku-WCR kuqala, kodwa ngokushesha ivumela ukuguqulwa kwe-A/D ukuhlukanisa ukuphuma kwevolumu yedatha kanye nosayizi we-1FFFH. Uma idlula, faka i-WCR bese ufaka kancane kancane u-1 ku-assembler. Bese ufaka i-WCR bese unciphisa kancane kancane i-assembler ngo-1.

Lapha, inani le-WCR lishintshwa kancane kancane kwenye yama-assembler amabili kuze kube yilapho umkhiqizo we-A/D kanye ne-1FFHH ziqedwa maduze nje. 5.2.3 Ukugeleza kohlelo lokusetha inani lesisekelo Khetha ukusethwa kwenani lesisekelo kuphaneli yokusebenza yesofthiwe yesistimu yobuchwepheshe esebenzisana bese ucindezela bese ubamba. Ngalesi sikhathi, i-CPU yesistimu yokuqapha ingashintshela ku-assembler yesixazululo sokuqeda ngenxa yokwamukela isignali yedatha yokuxhumana kwesicelo, bese ikhomba ukwamukelwa ku-assembler yesisombululo sokuqeda. egameni lomyalo wesistimu, bese ufaka i-assembler yesimiso senani lesisekelo.

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