Tam sim no nws yog ntau thiab ntau dua los siv hluav taws xobtsheb scale. Raws li kev kho thiab kev saib xyuas dav dav ntawm cov tsheb thauj khoom hluav taws xob / qhov hnyav, cia peb tham txog cov ntaub ntawv hauv qab no raws li tus neeg xa khoom hnyav:
Lub tsheb thauj khoom hluav taws xob feem ntau yog tsim los ntawm peb qhov chaw: lub loadcell, cov qauv thiab lub voj voog. Qhov tseeb yog los ntawm 1/1500 txog 1/10000 lossis tsawg dua. Kev siv ob qho tib si A / D hloov dua siab tshiab Circuit Court tuaj yeem ua tau raws li qhov yuav tsum tau ua thiab muaj qhov zoo ntawm qhov muaj peev xwm tiv thaiv kev cuam tshuam thiab tus nqi qis. Hauv kev ua raws li cov kev cai hauv teb chaws metrology, qhov tsis raug ntawm cov tsheb thauj khoom hluav taws xob hauv nws tus kheej thiab cov kev ua yuam kev ntxiv hauv kev siv yog cov teeb meem uas cov tuam txhab thiab cov neeg siv yuav tsum tau saib xyuas.
Ua ntej, txoj kev txo qhov yuam kev hauv kev tsim thiab tsim cov khoom siv hluav taws xob hnyav:
1. Kev lees paub ntawm loadcell technical indicators
Nws yog tus yuam sij los xyuas kom meej qhov zoo ntawm cov tsheb thauj khoom hluav taws xob kom xaiv cov loadcells nrog ntau yam kev ntsuas uas ua tau raws li qhov yuav tsum tau ua. Linearity, creep, tsis muaj load kub coefficient thiab rhiab heev kub coefficient yog ib qho tseem ceeb qhia ntawm lub loadcells. Rau txhua pawg ntawm cov khoom thauj khoom, kev soj ntsuam kuaj thiab ntsuas kub thiab qis yuav tsum tau ua raws li cov qauv ntsuas uas xav tau los ntawm cov qauv hauv tebchaws.
2. Kub coefficient ntawm hluav taws xob tsheb scale Circuit Court
Kev tsom xam thiab kev sim ua pov thawj tias qhov kub thiab txias coefficient ntawm input tsis kam ntawm input amplifier thiab cov lus tawm tswv yim yog qhov tseem ceeb cuam tshuam rau qhov kub coefficient ntawm cov hluav taws xob tsheb scale rhiab heev, thiab cov hlau zaj duab xis resistor nrog kub coefficient ntawm 5 × 10-6. yuav tsum xaiv. Kev ntsuas kub siab yuav tsum tau ua rau txhua lub tsheb thauj khoom hluav taws xob tsim. Rau qee cov khoom uas muaj qhov me me ntawm qhov ntsuas kub tsis txaus, cov yeeb yaj kiab hlau resistors nrog qhov ntsuas kub tsawg dua 25 × 10-6 tuaj yeem siv los them. Nyob rau tib lub sijhawm raws li kev ntsuas kub siab, cov khoom tau raug kub hnyiab los txhim kho qhov ruaj khov ntawm cov khoom.
3. Non-linear them nyiaj ntawm hluav taws xob tsheb nplai
Raws li cov xwm txheej zoo tshaj plaws, cov lej digital ntawm lub tsheb thauj khoom hluav taws xob tom qab kev hloov pauv hloov pauv mus rau digital thiab qhov hnyav ntawm cov khoom siv hluav taws xob yuav tsum yog linear. Thaum ua qhov tseeb calibration nyob rau hauv cov txheej txheem ntau lawm, siv cov kev pab cuam hauv computer rau ib-point calibration. Xam qhov nqes hav ntawm tus lej thiab qhov hnyav raws li txoj kab ncaj nraim thiab khaws cia rau hauv lub cim xeeb. Qhov no tsis tuaj yeem kov yeej qhov tsis yog-linear yuam kev tsim los ntawm lub sensor thiab integrator. Kev siv ntau qhov kev kho, siv ntau txoj kab ncaj nraim los kwv yees qhov nkhaus zoo txo qhov tsis yog-linear yuam kev yam tsis tas yuav nce tus nqi kho vajtse. Piv txwv li, ib qho hluav taws xob tsheb nplai nrog 1/3000 qhov tseeb txais 3-point calibration, thiab ib qho hluav taws xob tsheb nplai nrog 1/5000 qhov tseeb siv 5-point calibration.
Post lub sij hawm: Oct-28-2021