Zoyezera bwino kwambiri komanso zanzeru zamagetsi zamagetsi zambiri

Wolemba: Smartweigh-Multihead Weighter

1 Chiyambi Ndichitukuko chofulumira chaukadaulo wamakono waukadaulo waukadaulo wamakono ndiukadaulo wazidziwitso zamagetsi, zoyezera zamagetsi zamagetsi zakhala zikugwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana azachuma komanso azachuma. Ntchito za formula ndi ntchito zina zimakondedwa kwambiri ndi makasitomala. Kiyi yanzeru yamagetsi yama multihead weigher imapangidwa ndi zida ziwiri zazikulu zamapulogalamu.——Dongosolo loyang'anira ndi kukonza ma data ndi tsamba laukadaulo wolumikizana ndi makompyuta amunthu amapangidwa ndi njira yoyendera ndi kukonza deta. Zotsatira zoyezedwa zimawonetsedwa pansi paulamuliro wa aliyense, monga chidziwitso ndi kukopera. Nkhaniyi imafotokoza mwatsatanetsatane mbali yowunikira pulogalamu yamakina, kuphatikiza kuwongolera kwamagetsi kwamagetsi amagetsi. Design scheme sensor calibration imayankha komanso ntchito yake yapakatikati ya cpu. 2 Kulumikizana kwadongosolo kwadongosolo lonse. Chinsinsi cha kafukufuku wa sayansi ndi njira yomaliza dongosolo lanzeru zamapulogalamu. Dongosolo lowunikira ma multihead weigher limapangidwa makamaka ndi sensor ntchito amplifier, kupeza deta (analog/digital conversion) magetsi opangira magetsi, zida zowongolera zapakatikati, gawo loperekera mphamvu zamagetsi, kubweza kwakunja ndikusintha ntchito yamagetsi.

Ntchito yamagetsi opangira magetsi ndikusintha nambala yamtengo wolemetsa ndi nambala yamagetsi yosinthika pang'ono yogwira ntchito molingana ndi cholumikizira cholumikizira chamagetsi, ndikuchikulitsa ku data yogwira ntchito yovomerezedwa ndi chipangizo choyenera cha analogi/digito chosinthira. Signal ndikuchita kutembenuka kwa A / D, cholakwika cha dongosolo la chida chimayambika makamaka ndi gawo ili, kotero dongosolo lamapangidwe la gawoli likugwirizana ndi kulondola kwa pulogalamu yonse yamapulogalamu. Chigawo chapakati cha processing sichili ndi udindo pakugwira ntchito ndi kugwiritsa ntchito pulogalamu yonse ya pulogalamuyo, ndipo imapanga Njira yopangira deta, kuwerengetsa basi, kusinthika kwachidziwitso cha It, kusintha kwa chipangizo choyanjanitsidwa ndi zomangamanga Chigawo chamagetsi chomwe chimapereka malangizo ndi kutumiza deta. pakati pa CPU ya pulogalamu yapa tsamba. Pulogalamu yamagetsi yosinthira magetsi imapereka njira yabwino kwambiri yoperekera mphamvu ndi kugawa kuti igwire bwino ntchito pulogalamu yamapulogalamu, ndipo imapereka kuchuluka kwamphamvu kwamagetsi osinthira magetsi. 3 Kukula kwa Hardware Kiyi pakukula kwa zida zamagetsi zamagetsi zamagetsi kumaphatikizapo magawo atatu: amplifier yogwira ntchito, analogi / digito kutembenuka kwamagetsi, CNC chida chotsutsa makina Chip chophatikizira cha AD525C chogwiritsidwa ntchito chikuwonetsedwa mu Chithunzi 2. voteji yogwira ntchito iyenera kukhala yochepa kuposa 25. Kutentha kwa magetsi oyendetsa galimoto kuyenera kukhala kochepa kusiyana ndi chiwerengero cha kukana chodziwika bwino cha CMR, chomwe chili pafupi ndi 90dB pamene phindu lambiri ndilokulirapo kuposa la dongosolo lalikulu la discrete. 0.003^ (pamene G=l). Monga chokulitsa mawu, AD524 ili ndi zotsutsa zolondola kwambiri za tt1WG = l, 10, 100 ndi 1000 pini-mtundu wa SI ndondomeko: pangani mapeto a JWRG2 a chubu kukhala aakulu komanso achibale Pambuyo pa pini yosankha yochulukitsa ilumikizidwa pasadakhale (panthawiyi). , RG1 sichikugwirizana ndi mphuno), ntchito yokulitsa kukula kwachibale ikhoza kumalizidwa. Kupatula mtundu wa njira yofananira yamkati, pamene phindu lodziwika limachokera 1 mpaka 100.

Kusintha kukapitilizidwa, AD524 ilinso ndi njira ina yowongolera phindu. Rheostat RG yotsetsereka imagwiritsidwa ntchito kulumikiza chubu 3 (RG2) ya AD524 processing chip ku pini 16 (RGD), ndipo mtengo wokana womwe umagwirizana ndi G RG ndi RG-40K/(G-l)3.2 dijiti yosinthira mphamvu yamagetsi. Mu dongosolo lamapangidwe awa, ma 14-bit angapo S! analog/digital converter MAX194 yopangidwa ndi MAXIM yasankhidwa. Chip processing ali capacitor-mtundu DACSPWM, Zitsanzo mouthpiece chofukizira, 10 calibration DACs, serial kulankhulana ndi kulamulira osati ndi makhalidwe a opareshoni mkulu-liwiro, mwatsatanetsatane mkulu, kugwiritsa ntchito mphamvu, etc., komanso ma calibration ake mkati calibration magetsi dera calibrates. kusiyana kwa mzere ndi kuchotsera, zomwe zingathe kusinthidwa popanda kusintha kwakunja. Sungani machitidwe onse 18 osasunthika mkati mwa kutentha kovomerezeka. Makhalidwe a serial kulumikizana kumapangitsa IB kulumikiza ma board ambiri owongolera zizindikiro nthawi yomweyo, zomwe zimathandizira kwambiri dongosolo la pulogalamu yamapulogalamu. Kuphatikiza apo, imafanizira magetsi osinthira analogi ndikusintha kwa data. Mapangidwe a kulekanitsa magetsi amachepetsanso kwambiri kuwonongeka kwa kugwirizana kwa data-phokoso. Makhalidwe ake ofunikira ndi awa: mawonekedwe azithunzi ndi ma 14 bits: chifukwa cha kupatuka kwa dongosolo lophatikizika la discrete ndi 0,33%, ndipo chiŵerengero cha chizindikiro cha data ku phokoso kuphatikiza ndi mafelemu otayika ndi 82dB; 9. Pamene umboni ntchito voteji ndi + 9V, pamene athandizira ntchito voteji kusintha kuchokera 0 kuti 9V kapena 5 kuti + 9V, linanena bungwe deta voliyumu kusintha OOOOH kuti 3FFFH. Kuthamanga kokonzedweratu kumagwiritsidwa ntchito kuwongolera kusintha kwa mtengo wake wokana. Chiwembu ichi amasankha chosagwedezeka CNC chida chida resistor X9241 chopangidwa ndi Xicor Corporation, kuphatikizapo 4 resistor arrays, gulu lililonse kuphatikizapo 63 resistor modules, Pakati pa gawo lililonse ndi mfundo 2, pali mfundo zapampopi zomwe zingathe kusakatula ndi kukoka moduli. Malo a gawo lokoka pamndandanda amawongoleredwa ndi kasitomala molingana ndi socket ya basi yama waya awiri, ndipo adilesi yatsatanetsatane ya gawo lakuthupi ndi fungulo la A0 -A3 pamapeto pake kuti afotokoze.——X9241 imafanizitsa kusanthula kwa data pakuyankhulirana kosalekeza ndi momwe malo olowera adilesi alili. Pamene ma adilesi onse 4 atsatanetsatane achita bwino, gululo liyankha ndi yankho kuti liwonetse kuti lasankhidwa. Ndipo X9241 iliyonse ili ndi 4 resistor arrays, kotero mizere iwiri ya I / O ya CPU imatha kugwira ntchito mpaka 64 resistor arrays, ndipo gulu lililonse la resistor limagwirizanitsidwa ndi drag terminal registry (WCR) ndi maadiresi anayi a 8-bit, zonse zomwe zingathe kuikidwa kapena kuwerengedwa ndi kasitomala.

Zomwe zili mu drag terminal count memory (WCR) zimayendetsa pang'ono JL ya drag terminal mu resistor array. Mu dongosolo lamalamulo la X9241, kuwonjezera pa kukumbukira-kulemba-kulemba ndi lamulo losamutsa deta pakati pa kukumbukira kulikonse, palinso lamulo lomwe Lolani kuti drag terminal (WCR) iS/kuchotsa lamulo lochepa la unit INC-WIPER. , nthawi iliyonse INC-WIPER ikuchitidwa, ndiko kuti, kukoka kolowera kumasuntha imodzi mu 63 resistor modules, yomwe imasonyeza dongosolo la mapangidwe a zero kusintha pulogalamu Kusavuta kwakukulu, 4 system mfundo 1) Bwezerani“Pulogalamu yamakina ikayatsidwa, njira yokhazikitsiranso imachitika koyamba. Ngati palibe lamulo ladongosolo kuchokera patsamba laukadaulo la gulu lowongolera-munthu-makompyuta, pulogalamu yamakina imayamba kuyika liwu lachidziwitso mu EEPROM nthawi iliyonse kuwongolera kuyambika, ndikuchita chizindikiritso. Yambitsani zosintha zazikulu monga zokonzeratu zoyambilira kapena njira yotetezeka ya tchanelo, mtengo woyambira, ndi phindu lomwe lakhazikitsidwa patsogolo pa standby yapitayi. Kenako CPU imapereka lamulo loti atembenuzire masinthidwe angapo a analogi a AD7502 kukhala njira yachinayi yotetezeka, ndipo cholumikizira ① ndi ② cha chida ndi zida zokulitsa zida AD524 ndizofupikitsidwa, ndipo CPU imawongolera kukana kwa makina a CNC. chida molingana ndi dongosolo lokonzedweratu. Mtengo wotsutsa wa 10K resistor mu chipangizo cha X9241 umasinthidwa, ndipo kusintha kwa zero kwa chowongolera chowongolera kupeza phindu la zida za zida kumachitika. 2) Kusintha kwa Sensor" Pamene woyendetsa awona kuti choyezera chamagetsi cha multihead chilibe katundu, lamulo losinthira zero zero limapezeka molingana ndi tsamba laukadaulo wapakompyuta wamunthu, ndipo CPU imavomereza zomwe zimaperekedwa ndi CPU ya kompyuta yamunthu. tsamba laukadaulo wolumikizana molingana ndi kulumikizana kwachinsinsi. okhutira, kusiyanitsa gulu chiwerengero cha sensa kuti ayenera kusintha, kusintha lolingana CNC makina chida resistor X9241, kuchita kusintha koyambirira ndi kusintha bwino motero, ndi dera mphamvu amachita ntchito ya tsiku ndi tsiku basi ziro kusintha kwa kachipangizo. 3) Kusintha kwa pulogalamu ya zero, CPU ikasintha phindu la amplifier ndi sensa (pakufunika) ya chowongolera chokhazikika, CPU imasonkhanitsa mphamvu yotsalira yotsalira ya zero potengera A/D converter MAX194 ndi masitolo. mu EEPROM * dikirani mpaka zonse zikhala bwino Pomuyeza mwana, chotsaninso mtengowo. "Ngati chilengedwe chimasintha kwambiri ndipo CPU silandira lamulo losintha zero, kasitomala akhoza kupereka lamulo losintha zero nthawi iliyonse komanso kulikonse malinga ndi tsamba lothandizira la makina, kotero kuti choyezera chamagetsi cha multihead chidzawerengedwanso. Kuphatikiza apo, cholakwika cha zero point data yopangidwa ndi A/D, MAX194 ingokonza zopusa za A/D mkati mwa 50ms yamphamvu iliyonse. CPU itha kugwiritsanso ntchito chosinthira A/D MAX194 kuchita "Kawirikawiri, choyezera chamagetsi chamtundu wamtundu wamagetsi chimakhala ndi ntchito yosinthira zero zokha komanso nthawi yeniyeni ya pulogalamu yabwino kwambiri" kuti zitsimikizire ntchito yake yoyezera kwambiri.#4 ) Sensor imagwira ntchito. ali ndi ntchito yapadera yomvera sensa, zomwe zimapangitsa kuti pulogalamu ya pulogalamuyo ikhale yofanana kwambiri 'kuyambira ma kilogalamu angapo mpaka matani ambiri.Tekinoloje yofunika kwambiri ndiyowongolera. chandamale cha ntchito, kapena sensor ikasinthidwa chifukwa cha zolakwika wamba (kapena kusintha kwa kapangidwe kake), akatswiri odziwa ntchito zamaukadaulo (kapena kasitomala) amangofunika kulumikiza sensa ndi pulogalamu yamakina, malinga ndi kuyanjana kwa makompyuta a anthu. tsamba laukadaulo, makiyi alamulo ndi kuchuluka kwa zomwe zikuchitika, ndikuyika muyezo wa KG kapena chigawo cha tani (chizindikiro chosowa) mu pulogalamu yoyezera pulogalamu yamapulogalamu, kenako mtundu wa A/D Wosinthira digito amawerengera mtengo wa mV/kg kapena mV. /t ngati mtengo woyambira ndikusunga mu EEPROM ya pulogalamu yamapulogalamu kuti mugwiritse ntchito poyeza.

Kuphatikiza apo, CPU imawerengera ndikuwunikira phindu la owongolera omwe amatha kuwongolera phindu la chida ndi amplifier zida AD524 molingana ndi mtengo woyambira ndi magawo akulu amiyeso yochokera ku pulogalamu yaukadaulo yolumikizirana ndi kompyuta ya CPU. CPU imagwiritsa ntchito 2K resistor mu digito potentiometer X9241. Pangani chowongolera chosinthika kuti chipindule ndi amplifier kuti chigwire ntchito pansi pa mulingo watsopano wa phindu, ndikuwongolera ndikusintha miyeso ya ma transmitter. Kuphatikiza pa kulemera kwa mtengo wa chinthu choyezedwa, chidziwitsocho chimakhalanso ndi ntchito zingapo monga kuyika njira yachitetezo, kuyika mtengo wamtengo wapatali, kukhazikitsidwa kwa bizinesi, kupeza phindu, kusintha zero zokha komanso kukonza zokhazikika. 5.1 Mapangidwe akuluakulu a mapulogalamu Ntchito zomwe zili mumagetsi amagetsi a multihead weigher zimayendetsedwa ndi kasitomala malinga ndi gulu la opareshoni mu pulogalamu yaukadaulo yolumikizana ndi makompyuta amunthu. Chifukwa chake, njira yowunikira komanso pulogalamu yolumikizirana yalonjeza ma protocol awa; kuyanjana kwa anthu ndi makompyuta Ntchito iliyonse ya pulogalamu yaukadaulo yaukadaulo imakhazikitsidwa kuti igwirizane ndi byte, yomwe imatchedwa mawu olamula. Gulu la opareshoni likagwira ntchito yeniyeni ya ntchito inayake, mawu olamula achibale amakankhidwa kuchokera ku pulogalamu yaukadaulo yolumikizana ndi makompyuta a anthu, ndipo dongosolo loyang'anira limavomereza pochotsa mawonekedwe a serial (chifukwa dongosolo loyendera liyenera kukhazikitsidwa. Kuyeza ndi kukankhira masekeli Pambuyo ntchito yeniyeni ya zotsatira, izo zikhoza kulandiridwa ndi njira kuthetsa koma osati njira funso), pambuyo pochita chizindikiritso malangizo 'pita kwa wachibale utumiki katundu assembler.

Kuphatikiza apo, mawu olamula amatsitsidwanso mu EEPROM, ndipo amakhala boma loti lizinyamulidwa pambuyo poyeserera. Sinthani EEPROM mumayendedwe a pulogalamuyo, ndikukwezanso mawu a EEPROM mutabwereranso koyambirira kwa pulogalamu yodziyimira pawokha. Pambuyo poyambitsa pulogalamu iliyonse ndikukhazikitsanso parameter yayikulu, pulogalamu yosinthira zero ya amplifier imaperekedwa kamodzi, ndipo pulogalamu yoyambira iyenera kudumpha kuchokera pakulemera kwake ndikuyamba kuyambira pachiyambi nthawi iliyonse yomwe doko la mzere watha. Kudikirira kwa pulogalamu yoyimitsa ndikubwerera kumalo oyambira kutsukidwa, kotero kuti mbendera yowonjezera 7QH yakhazikitsidwa kuti isiyanitse ngati kusokoneza kutha kwayatsidwa kapena ayi. Ngati zichitika, zimalumpha kuchokera muzowongolera zoyezera ndikukhazikitsanso magawo akulu.”5.2 Mapangidwe ang'onoang'ono-5. XI amplifier imasinthidwa kukhala theka la assembler. Choyamba, CPU imasankha njira ya 4 yotsegulira njira zambiri. Zotsatira zake ndikuti ma terminals awiri a chip amplifier amafupikitsidwa ndipo chizindikiro cha data cha voliyumu ndi ziro, ndipo kukulitsa kumachitika. Mtengo wotuluka wa mita uyenera kusinthidwa——AC bias voltage. Ikani mutu wokoka wa X9241 pomwe malo okhazikika a amplifier amatulutsa voteji yabwino, ndiye kuti, tumizani OOH ^ kumanzere kwa WCRC drag terminal (kuwerengera kukumbukira) ndiyeno yambitsani kutembenuka kwa A/D. adapeza zambiri za data (zoposa 1FFFH) ndi 1FFFH (1FFFH ndiye kuchuluka kwa data pomwe mphamvu yogwira ntchito ya ADCMAX194 ikuyerekeza kuchuluka kwa ziro, ndikuzindikira ngati kusiyana kwake kuli nambala yabwino, ngati ili yabwino Nambalayo imabwerezedwa WCR kuphatikiza KA / D ndi ntchito yeniyeni yowonjezera ndi kuchotsa, mpaka zotsatira za kusiyana ndi zero kapena zimathetsedwa pamene zisintha kuchokera ku zabwino kupita ku zoipa. Kusiyanitsa kumadalira; CPU sifunikira kuyika nambala ku WCR poyamba, koma nthawi yomweyo imathandiza kusintha kwa A/D kusiyanitsa kutulutsa kwa voliyumu ya deta ndi kukula kwa 1FFFH. Ngati ipitilira, lowetsani WCR ndikuwonjezera pang'onopang'ono 1 ku assembler. Kenako lowetsani WCR ndikuchepetsa pang'onopang'ono chophatikiza ndi 1.

Apa, mtengo wa WCR umasinthidwa pang'onopang'ono m'modzi mwa ophatikiza awiriwo mpaka kutulutsa kwa A / D ndi 1FFFH kuthetsedwa posachedwa. 5.2.3 Mayendedwe a pulogalamu yokhazikitsira mtengo Sankhani maziko a mtengo wake pagawo la opareshoni la pulogalamu yaukadaulo yolumikizana ndipo dinani ndikugwira. Panthawiyi, CPU ya dongosolo loyang'anira likhoza kusinthira ku chophatikizira chothetsera chifukwa cholandira chizindikiro cha mauthenga a ntchito, ndikuzindikiritsa kuvomereza mu kusonkhanitsa njira yothetsera. ku mawu olamulira dongosolo, ndiyeno lowetsani base value setting assembler.

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