I-Smart Weigh izinikele ekusizeni amaklayenti akhulise umkhiqizo ngezindleko ezincishisiwe.
Ulimi
I-Smart Weigh izinikele ekusizeni amaklayenti akhulise umkhiqizo ngezindleko ezincishisiwe.
Umbhali: Smartweigh–I-Multihead Weighter
I-digital display multihead weigher eklanywe kuleli phepha iyidivayisi ebonisa ukukala esekelwe kunzwa yamandla e-resistor strain kanye nomklamo we-chip eyodwa njengokhiye wokulawula. Ibanga lokutholwa lingu-0-10kg, futhi ukunemba kokulinganisa kungu-±I-2g, isikrini sokubonisa ikristalu ewuketshezi sibonisa imininingwane yedatha yokulinganisa enembile, ngaphezu kwalokho, imininingwane yedatha yokulinganisa enembile ingathunyelwa kukhompyutha ye-elekthronikhi ukuze kuboniswe imininingwane ngokuya ngokuxhumana kwe-serial. Isofthiwe yesistimu inezici zokunemba okuphezulu, izici ezizinzile nokusebenza okulula. Umdwebo wefreyimu yesikimu se-multihead weigher uboniswa kuMfanekiso 1 ngezansi: 1. Isimiso sesekethe yokucushwa kwehadiwe 1.1. I-resistor sensor yesisindo Inzwa yesisindo sohlobo lwe-strain force yakhiwe izingxenye eziningi ezibalulekile ezifana nama-resistance gauges, ama-polyurethane elastomers namasekhethi amandla okuhlola.
I-polyurethane elastomer idala ukuwohloka okunwebekayo ngaphansi kwamandla angaphandle, ukuze igeji ye-resistance gauge enamathiselwe ebusweni bayo nayo ibangele ukuwohloka. Ngemuva kokuthi i-resistance gauge ikhubazekile, inani layo lokumelana lizoshintsha (linwebe noma linciphe), bese ngesilinganiso esinembile kakhulu Isifunda samandla siguqulela lesi siginali sibe isignali ye-elekthronikhi (i-voltage esebenzayo noma yamanje), bese iqedela yonke inqubo yokuguqula. amandla angaphandle abe isignali kagesi. Umjikelezo wamandla okuhlola uboniswa kuMfanekiso 2, futhi ukumelana kwegeji yokulinganisa yokumelana kuguqulwa kube okukhiphayo kwamandla okusebenza. Ngenxa yokuthi ibhuloho le-Wheatstone linezinzuzo eziningi, njengokukwazi ukucindezela ukulimala kokushintsha kwezinga lokushisa, ukucindezela ithonya lamandla aseceleni, kanye nokubhekana kalula nenkinga yesinxephezelo senzwa yesisindo, ibhuloho le-Wheatstone liye lasetshenziswa kabanzi ngesisindo. izinzwa. sebenzisa.
Inzwa yesisindo ngokuvamile inemigqa emine ye-I/O, futhi ukumelana nokuphumayo ngokuvamile kungu-350Ω, 480Ω, 700Ω, 1000Ω. Itheminali yokufaka ngokuvamile izokhipha isinxephezelo esithile sezinga lokushisa nokuzwela. Isimelaphi setheminali yokokufaka sizoba ngu-20-100Ω ngaphezu kwetheminali yokukhiphayo. Ngakho-ke, amatheminali e-I/O angahlukaniswa ngokulinganisa inani lokumelana ne-multimeter yedijithali. 1.2. Isignali yedatha yokuphumayo yenzwa yesisindo sohlobo lwe-amplifier ayiqinile (ngokulandelana kwe-mV noma i-μV), futhi ngokuvamile ihambisana nomsindo omkhulu. Ngesiginali yedatha enjalo, isinyathelo sokuqala kusixazululo sesekethe yokuphakelwa kwamandla ngokuvamile ukukhetha isikhulisi sensimbi ukuze siqale sikhulise isignali encane yedatha.
Amasekhethi okunikezwa kwamandla kwesikhulisi sensimbi anamandla okunqatshelwa kwemodi evamile kunama-op amps esignali alula. Inhloso ebaluleke kakhulu yokwandisa akulona inani lenzuzo, kodwa ukuthuthukisa ukuzinza kwemvamisa yesekethe yokuphakelwa kwamandla. Kulo mklamo, i-amplifier ye-instrumentation yamukela ukwakheka kwe-OP07 ama-amplifiers amathathu asebenzayo.
Njengoba kubonisiwe kuMfanekiso 3. Uma u-R1=R2, R3=R4, Rf=R5, inani lokuzuza lesekethe yokuphakelwa kwamandla ngu: G=(1+2R1/RG1) (Rf/R3). Kungabonakala esibalweni sefomula ukuthi ukulungiswa kwevelu yenzuzo yesekethe yokuphakela amandla kungaqedwa ngokushintsha inani lokumelana le-RG1.
1. 3. Isekhethi ye-A/D yokuguqulelwa kwamandla Isiguquli se-A/D sikhetha i-icHX711 ehlanganisiwe yesikali esikhethekile esingu-24-bit, okuyi-ic ehlanganisiwe engu-24-bit A/D eklanyelwe ngokukhethekile izikali zikagesi ezinembe kakhulu. Uma kuqhathaniswa namanye ama-IC ahlanganisiwe ohlobo olufanayo, i-IC edidiyelwe ihlanganisa amasekhethi aseduze adingekayo kwamanye ama-IC ahlanganisiwe ohlobo olufanayo, okuhlanganisa ukunikezwa kwamandla okulawulwayo okulungiswayo, i-oscillator yewashi yedijithali e-on-chip, nokunye okunjalo. Faka iswishi ukuze ukhethe isiteshi sokuphepha A noma isiteshi sokuphepha B ngokuthanda kwakho, futhi isikhulisi sesilawuli esihlelelekayo sangaphakathi esinomsindo ophansi sixhunywe phakathi kwakho kokubili.
Inani lenzuzo yesilawuli ehlelekayo lesiteshi sokuphepha ngu-128 noma 64, futhi isilinganiso esihambisanayo somkhawulo wesikweletu esiphelele esihambisana nenani lesignali yesignali yokuphakama kwesiginali ngokulandelana ngokulandelana.±20mV noma±40mv. Ishaneli yokuphepha B iyinani lenzuzo engaguquki engu-32, futhi ivolthi esebenzayo yesignali ehlukile yesikali esigcwele±80mv. Ishaneli yokuphepha B isetshenziselwa ukuhlola amapharamitha ayinhloko wesofthiwe yohlelo kuhlanganise nebhethri elishajekayo.
Lolu hlelo lokuklama luholela ekuphumeni kwe-amplifier yesisetshenziswa kutheminali yokokufaka yesiteshi sokuphepha A ukuze silingise isignali ehlukile ye-analogi, i-multihead weigher1.4, idizayini ye-chip eyodwa nesixhumi esibonakalayo sokuxhumana idizayini ye-chip eyodwa ikhetha i-AT89C51 ic ehlanganisiwe, kanye nesixhumi esibonakalayo sokuxhumana okhiye bokusebenza, isikrini sokubonisa ikristalu ewuketshezi nekhompyutha ye-elekthronikhi eboniswa ku-5. Ulayini wokuxhumana we-HX711 we-serial uholela ekwakhiweni kwe-single-chip P1.0 kanye nezimbobo ze-P1.1. Ngemuva kokuthi isisombululo siklanywe yi-microcomputer ye-single-chip, imininingwane yedatha yesisindo ithunyelwa esikrinini se-LCD.
Ukwengeza, izikhathi ezimbalwa zolwazi lwedatha yokulinganisa olunembile luthunyelwa kukhompyutha ye-elekthronikhi ukuze lubonise ulwazi ngokusho kokuxhumana kwe-serial.
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