Smart Weigh yadzipereka kuthandiza makasitomala kukulitsa zokolola pamtengo wotsika.
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Smart Weigh yadzipereka kuthandiza makasitomala kukulitsa zokolola pamtengo wotsika.
Wolemba: Smartweigh-Multihead Weighter
Chojambulira cha digito cha multihead weigher chomwe chapangidwa mu pepala ili ndi chida chowonetsera choyezera chotengera mphamvu yolimbana ndi mphamvu komanso mapangidwe a chip microcomputer imodzi ngati chinsinsi chowongolera. Mtundu wodziwikiratu ndi 0-10kg, ndipo muyeso wolondola ndi±2g, mawonekedwe amadzimadzi amadzimadzi amadzimadzi amawonetsa zidziwitso zoyezera zolondola, kuwonjezera apo, zidziwitso zamuyezo wolondola zitha kutumizidwa pakompyuta yamagetsi kuti ziwonetsedwe malinga ndi doko la serial. Pulogalamu yamakina imakhala ndi mawonekedwe olondola kwambiri, mawonekedwe okhazikika komanso ntchito yosavuta. Chithunzi cha chimango cha multihead weigher design scheme chikuwonetsedwa mu Chithunzi 1 pansipa: 1. Mfundo yoyendetsera dera la hardware 1.1. Kulemera kwa sensor resistor Mphamvu yolemetsa yolemetsa imapangidwa ndi zigawo zambiri zofunika monga ma geji otsutsa, ma polyurethane elastomers ndi mabwalo oyendera magetsi. kupanga.
Polyurethane elastomer imayambitsa kupunduka kwa zotanuka pansi pa mphamvu yakunja, kotero kuti kukana kwamphamvu komwe kumalumikizidwa pamwamba pake kumayambitsanso kupunduka. Pambuyo pakuwonongeka kwa tsinde la kukana, mtengo wake wokana udzasintha (kukula kapena kutsika), ndiyeno kudzera muyeso yolondola. mphamvu yakunja kukhala chizindikiro chamagetsi. Yang'anani dera loperekera mphamvu monga momwe zasonyezedwera pa Chithunzi 2, ndikusintha kukana kwa geji yotsutsa kuti igwire ntchito. Chifukwa chakuti mlatho wa Wheatstone uli ndi ubwino wambiri, monga kutha kupondereza kuvulaza kwa kusintha kwa kutentha, kupondereza mphamvu ya mbali, komanso kuthana ndi vuto la malipiro a sensa yolemera, mlatho wa Wheatstone wapindula kwambiri. sensor yoyezera. kugwiritsidwa ntchito konsekonse.
Sensa yoyezera nthawi zambiri imakhala ndi mizere inayi yotulutsa, ndipo kukana kwake kumakhala 350Ω, 480Ω, 700Ω, 1000Ω. Mapeto olowera nthawi zambiri amapereka chipukuta misozi chifukwa cha kutentha ndi kukhudzika, ndipo chopinga cholowera chimakhala chokwera kuposa chomwe chimatuluka. 20 ~ 100Ω, kotero Gwiritsani ntchito makina ochulukitsira digito kuti muyese kukana kuti muzindikire zotuluka. 1.2. Chizindikiro cha data cha amplifying circuit strain-type maight sensor sichiri cholimba (mV kapena μV heavyweight), ndipo nthawi zambiri pamakhala phokoso lambiri. Pachidziwitso choterechi, sitepe yoyamba munjira yolumikizira magetsi nthawi zambiri imakhala kusankha chokulitsa chida kuti choyamba chikulitse chizindikiro chaching'ono cha data.
Dongosolo lamagetsi amplifier la zida lili ndi kuthekera kopitilira muyeso wamba kuposa njira yosavuta yosinthira ma sign amplifier. Cholinga chovuta kwambiri choonjezera sikuli phindu la phindu, koma kungowonjezera kukhazikika kwafupipafupi kwa dera loperekera mphamvu. Muchiwembu chopanga ichi, chokulitsa chida chimatenga mawonekedwe a OP07 amplifiers atatu ogwira ntchito.
3 monga momwe tawonetsera mkuyu. Pamene R1 = R2, R3 = R4, Rf = R5, phindu la gawo lamagetsi ndi: G = (1 + 2R1 / RG1) (Rf / R3). Zitha kuwoneka kuchokera ku chiŵerengero cha chilinganizo kuti kusintha kwa mtengo wopindula wa dera loperekera mphamvu kumatha kutsirizidwa mwa kusintha mtengo wotsutsa wa RG1.
1. 3. A/D kutembenuka kwamagetsi opangira magetsi A/D converter amasankha electronic scale-specific integrated icHX711, yomwe ndi 24-bit A/D converter Integrated ic yopangidwa mwapadera kuti ikhale yolondola kwambiri sikelo yamagetsi. Poyerekeza ndi ma IC ena ophatikizika amtundu womwewo, IC yophatikizika imaphatikiza zozungulira zozungulira zofunika kwa ma IC ena ophatikizika amtundu womwewo, kuphatikiza magetsi owongolera osinthika, oscillator wotchi ya on-chip, ndi zina zotero. Lowetsani chosinthira kuti musankhe njira yachitetezo A kapena njira yachitetezo B mwakufuna kwanu, ndipo amplifier yowongolera pulogalamu yotsika phokoso imalumikizidwa pakati pa ziwirizi.
Phindu la wowongolera pulogalamu ya njira yachitetezo A ndi 128 kapena 64, ndipo mtengo wofananira ndi malire amtundu wamtundu wamtundu wa chizindikiro cha matalikidwe amatalikidwe motsatana.±20m .
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