Lub load cell yog dab tsi?
Lub Wheatstone choj Circuit Court (tam sim no siv los ntsuas strain nyob rau saum npoo ntawm cov qauv kev txhawb nqa) tau txhim kho thiab nrov los ntawm Sir Charles Wheatstone hauv xyoo 1843 yog qhov paub zoo, tab sis nyias cov yeeb yaj kiab nqus tso rau hauv qhov qub sim thiab sim Circuit Court daim ntawv thov tsis nkag siab zoo. tseem. Nyias zaj duab xis sputter deposition txheej txheem tsis muaj dab tsi tshiab rau kev lag luam. Cov txheej txheem no yog siv nyob rau hauv ntau daim ntawv thov, los ntawm kev ua complex microprocessors los ua precision resistors rau strain gages. Rau strain gages, nyias-film strain gages sputtered ncaj qha mus rau ib qho kev nyuaj siab substrate yog ib qho kev xaiv uas tshem tawm ntau yam teeb meem ntsib nrog "bonded strain gages" (tseem hu ua foil gages, nyob ruaj ruaj gages, thiab silicon strain gages).
Qhov kev tiv thaiv overload ntawm lub load cell txhais li cas?
Txhua lub xov tooj ntawm tes yog tsim los rau deflect nyob rau hauv load raws li kev tswj. Engineers optimize no deflection kom ua kom lub sensor qhov rhiab heev thaum ua kom cov qauv ua haujlwm nyob rau hauv nws cheeb tsam "elastic". Thaum lub load raug tshem tawm, cov qauv hlau, deflected nrog nws thaj tsam elastic, rov qab mus rau nws thawj lub xeev. Cov qauv uas tshaj qhov chaw elastic no hu ua "overloaded". Ib qho overloaded sensor undergoes "yas deformation," uas cov qauv mus tas li deforms, yeej tsis rov qab mus rau nws thawj lub xeev. Thaum plastically deformed, lub sensor tsis muab ib qho kev tso zis tawm proportional rau cov ntawv thov load. Feem ntau, nws yog kev puas tsuaj mus tas li thiab irreversible. "Kev Tiv Thaiv Tshaj Tawm" yog qhov tsim tshwj xeeb uas txwv tsis pub lub sensor tag nrho deflection hauv qab nws qhov tseem ceeb load txwv, yog li tiv thaiv lub sensor los ntawm kev npaj txhij txog siab zoo li qub lossis dynamic loads uas yuav ua rau cov yas deformation.
Yuav ua li cas txiav txim siab qhov tseeb ntawm lub load cell?
Qhov tseeb ntawm lub sensor yog ntsuas los ntawm kev ua haujlwm sib txawv. Piv txwv li, yog hais tias lub sensor yog loaded rau nws qhov siab tshaj plaws load, thiab ces lub load raug tshem tawm, lub sensor lub peev xwm rov qab mus rau tib lub xoom-load tso zis nyob rau hauv ob qho tib si yog ib tug ntsuas ntawm "hysteresis". Lwm yam tsis muaj xws li Nonlinearity, Repeatability, thiab Creep. Txhua yam ntawm cov kev txwv no yog qhov tshwj xeeb thiab nws muaj nws tus kheej qhov ua yuam kev feem pua. Peb sau tag nrho cov kev ntsuas no hauv cov ntaub ntawv. Yog xav paub ntxiv txog kev piav qhia ntawm cov ntsiab lus raug, thov mus saib peb cov lus piav qhia.
Koj puas muaj lwm cov kev xaiv tso zis rau koj lub load hlwb thiab lub siab sensors dua li mV?
Yog lawm, off-the-shelf signal conditioning boards are available with power up to 24 VDC and three types of output options are available: 4 to 20 mA, 0.5 to 4.5 VDC or I2C digital. Peb ib txwm muab soldered-on boards thiab tag nrho calibrated rau max load sensor. Cov kev daws teeb meem kev cai tuaj yeem tsim kho rau lwm qhov tso zis raws tu qauv.
Post lub sij hawm: May-19-2023
