I-Smart Weigh izinikele ekuncedeni abathengi bandise imveliso ngexabiso elithotyiweyo.
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I-Smart Weigh izinikele ekuncedeni abathengi bandise imveliso ngexabiso elithotyiweyo.
Umbhali: Smartweigh–Multihead Weighter
Isibonisi sedijithali se-multihead weigher eyenzelwe kweli phepha sisixhobo sokulawula ubungakanani obusekwe kwi-resistor strain sensor sensor kunye noyilo lwetshiphu enye njengesitshixo sokulawula. Uluhlu lokufumanisa luyi-0-10kg, kunye nokuchaneka komlinganiselo±I-2g, isikrini sokubonisa i-crystal ye-liquid ibonisa ulwazi lwedatha yokulinganisa echanekileyo, ukongeza, ulwazi lwedatha yokulinganisa echanekileyo inokuthunyelwa kwikhompyutheni ye-elektroniki ukubonisa ulwazi ngokonxibelelwano lwe-serial. Isoftware yenkqubo ineempawu zokuchaneka okuphezulu, iimpawu ezizinzileyo kunye nokusebenza okulula. Umzobo wesakhelo seskimu soyilo lwe-multihead weigher siboniswe kuMzobo 1 ngezantsi: 1. Umgaqo-siseko wesekethe yoqwalaselo lwe-hardware 1.1. I-Strain sensor resistor I-strain force type weight weight iqulethwe ngamacandelo amaninzi abalulekileyo afana ne-resistance gauges, i-polyurethane elastomers kunye neesekethe zamandla okuhlola.
I-polyurethane elastomer ibangela ukuguqulwa kwe-elastic phantsi kwamandla angaphandle, ukuze igeji yokumelana ne-resistance gauge encanyathiselwe kumphezulu wayo nayo ibangela ukuguquka. Emva kokuba igeyiji yokumelana noxinzelelo ikhubazekile, ixabiso layo lokumelana liya kutshintsha (ukwandisa okanye ukunciphisa), emva koko ngomlinganiselo ochanekileyo. amandla angaphandle abe ngumqondiso wombane. Isiphaluka samandla okuvavanya siboniswe kuMzobo 2, kwaye ukuchasana kwe-resistance gauge ye-resistance gauge iguqulwa ibe yimveliso yombane osebenzayo. Ngenxa yokuba ibhulorho yeWheatstone ineenzuzo ezininzi, njengokukwazi ukucinezela umonakalo wokutshintsha kobushushu, ukucinezela impembelelo yamandla asecaleni, kunye nokujongana ngokulula nengxaki yembuyekezo yenzwa yobunzima, ibhulorho yeWheatstone isetyenziswe ngokubanzi kubunzima. abenzi boluvo. sebenzisa.
Inzwa yobunzima ngokuqhelekileyo inemigca emine ye-I / O, kwaye ukuchasana kwemveliso ngokuqhelekileyo yi-350Ω, 480Ω, 700Ω, 1000Ω. I-terminal yokufaka iya kuqhuba ngokubanzi imbuyekezo yeqondo lobushushu kunye novakalelo. I-resistor ye-terminal igalelo iya kuba yi-20-100Ω ephezulu kune-terminal ephumayo. Ngoko ke, ii-terminals ze-I / O ziyakwazi ukwahlula ngokulinganisa ixabiso lokumelana ne-multimeter yedijithali. 1.2. Umqondiso wedatha yemveliso ye-amplifier yohlobo lwenzwa yobunzima bokusebenza ayinamandla (ngolandelelwano lwe-mV okanye nokuba ngu-μV), kwaye ihlala ikhatshwa yingxolo eninzi. Kwisiginali yedatha enjalo, inyathelo lokuqala kwisisombululo sesekethe yonikezelo lwamandla ngokubanzi kukukhetha iamplifier yesixhobo sokukhulisa isiginali encinci yedatha.
Iisekethe zobonelelo lwamandla esandisi sesixhobo zinamandla okuchasa imowudi eqhelekileyo kuneendlela ezilula zokwahlula umqondiso we-op amps. Eyona njongo ibaluleke kakhulu yokunyusa ayiloxabiso lokuzuza, kodwa kukuphucula ukuzinza kwamaza ombane. Kolu yilo, i-amplifier ye-instrumentation ithatha isakhiwo se-OP07 i-amplifiers ezintathu zokusebenza.
Njengoko kubonisiwe kuMfanekiso 3. Xa i-R1=R2, R3=R4, Rf=R5, ixabiso lenzuzo yesekethe yonikezelo lombane yile: G=(1+2R1/RG1) (Rf/R3). Inokubonwa kwi-formula yokubala ukuba uhlengahlengiso lwexabiso lokufumana isiphaluka sonikezelo lwamandla lunokugqitywa ngokutshintsha ixabiso lokumelana ne-RG1.
1. 3. I-A/D yokuguqula umbane wesekethe I-A/D converter ikhetha i-electronic scale-specific integrated icHX711, eyi-24-bit A/D converter edibeneyo ic eyenzelwe ngokukodwa izikali ze-elektroniki ezichanekileyo. Xa kuthelekiswa nezinye ii-IC ezidibeneyo zohlobo olufanayo, i-IC edibeneyo idibanisa ii-peripheral circuits eziyimfuneko kwezinye ii-ICs ezidibeneyo zohlobo olufanayo, kubandakanywa ukunikezelwa kwamandla okulawulwayo okulungelelaniswayo, i-oscillator yewashi ye-digital on-chip, kunye nokunye okunjalo. Faka iswitshi ukuze ukhethe itshaneli yokhuseleko A okanye ijelo lokhuseleko B ngokuthanda kwakho, kunye nesandisi-silawuli esicwangciswayo sangaphakathi sidityaniswe phakathi kwezi zimbini.
Umlawuli ocwangcisiweyo ufumana ixabiso lejelo lokhuseleko A yi-128 okanye i-64, kwaye umda wetyala opheleleyo ohambelanayo ohambelana nomlinganiselo wexabiso lokufaka uphawu lwedatha yexabiso le-amplitude ngokulandelelana.±20mV okanye±40mV. Ijelo lokhuseleko B lixabiso lenzuzo esisigxina ye-32, kwaye igalelo elipheleleyo lesignali yokulinganisa igalelo lombane osebenzayo±80mV. Ijelo lokhuseleko B lisetyenziselwa ukujonga iiparamitha eziphambili zesoftware yenkqubo kubandakanya ibhetri egcwalisekayo.
Esi sikimu soyilo sikhokelela ekuphumeni kwesixhobo sokukhulisa isixhobo kwisiphelo segalelo sejelo lokhuseleko A ukulinganisa umqondiso we-analog umahluko, i-multihead weigher1.4, uyilo lwetshiphu enye kunye nojongano lonxibelelwano uyilo lwetshiphu enye ikhetha i-AT89C51 ic edibeneyo, kunye nojongano lonxibelelwano kunye izitshixo umsebenzi, ulwelo crystal umboniso screen kunye nekhompyutha ye-elektroniki eboniswe 5. Umgca HX711 serial unxibelelwano lukhokelela kuyilo-chip enye P1.0 kunye P1.1 izibuko. Emva kokuba isisombululo siyilwe yi-microcomputer ye-single-chip, ulwazi lwedatha yokulinganisa luthunyelwa kwisikrini se-LCD.
Ukongezelela, amaxesha amaninzi olwazi oluchanekileyo lwedatha yedatha ithunyelwa kwikhompyutheni yekhompyutheni ukuze ibonise ulwazi ngokonxibelelwano lwe-serial.
Umbhali: Smartweigh–Multihead Weighter Manufacturers
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