Yuav ua li cas siv multimeter los ntsuas qhov hnyav sensors
Lub ntsuas ntsuas ntsuas tau dav siv hauv kev lag luam hnyav (xws li siv cov nplais, ntsuas ntsuas hluav taws xob, ntsuas lub cev, thiab lwm yam), ntsuas kev quab yuam, thiab ntsuas qhov nro thiab ntsuas. Thaum siv ntawm qhov chaw, qhov ua txhaum ntawm qhov ntsuas qhov hnyav yog feem ntau raws li hauv qab no.
1. Sensor overload, vim kev sib txuas lus tsis meej ntawm tus neeg siv thiab cov chaw tsim khoom, qhov ntsuas qhov sib txawv tsis sib xws rau qhov tseeb quab yuam tus nqi thiab qhov hnyav, uas ua rau lub sensor overload thiab deformation ntawm lub sensor choj caj npab tsis kam, ua rau kev tsis sib haum xeeb. Lub sensor tsis ua haujlwm zoo, ua rau muaj kev hloov pauv hauv cov teeb liab tso zis thiab tsis muaj kev tiv thaiv.
2. Lub sensor lead hlau tawg, thiab tus neeg siv tsis tau siv kev tiv thaiv thaum siv. Lub sensor lead hlau feem ntau yog tawg ntawm lub sensor lead interface, uas cuam tshuam rau kev siv lub sensor yam tsis muaj lus teb lossis tam sim ntawd hloov ntawm qhov ntsuas ntsuas. 3. Kev siv cov sensors tsis raug, cov sensors zoo li qub tuaj yeem ua rau muaj kev puas tsuaj loj los ntawm kev cuam tshuam quab yuam, shear rog, torsion, thiab lwm yam, ua rau lawv tsis tuaj yeem hloov tau.
Yog li yuav ua li cas peb thiaj li siv tau ntau lub ntsuas ntsuas kom pom qhov ua yuam kev hauv qhov hnyav ntawm qhov chaw?
1. Lub chaw tsim khoom sensor muab lub sensor tso zis rhiab heev thiab lub hwj chim mov voltage ntawm lub Hoobkas, thiab peb ntes lub sensor tso zis teeb liab raws li ob qhov tsis. Lub ntsuas ntsuas ntsuas qhov hnyav ntawm lub zog ntsuas qhov ntsuas qhov ntsuas qhov ntsuas analog hauv millivolts. Piv txwv li, lub sensor tso zis rhiab heev yog 2.0mV / V, thiab lub hwj chim mov voltage yog DC10V. Ob qhov kev ntsuas no tuaj yeem ua rau peb muaj kev sib raug zoo ntawm lub sensor excitation ua hauj lwm voltage xav tau DC10V thiab lub sensor tso zis teeb liab sib xws rau 2.0mV excitation voltage tso tawm rau txhua txhua 1V. Piv txwv li, yog hais tias tag nrho cov ntau yam ntawm lub sensor yog 50KG, ces muab lub sensor nrog ib tug DC10V voltage thiab tso zis 20mV ntawm tag nrho cov ntau yam. Raws li qhov kev sib raug zoo no, peb siv lub multimeter los ntsuas lub sensor tso zis teeb liab hauv mV ntau. Qhov tsis muaj qhov tso tawm ntawm lub sensor yog 0mV, uas yog qhov qub. Yog tias nws ntau dua tus nqi no, tab sis ze rau tus nqi no, qhov kev hloov pauv ntawm tus lej qhia tias lub sensor muaj xoom drift. Yog tias tus nqi loj, nws qhia tau hais tias lub sensor puas lawm los yog tus choj sab hauv yog ib lub voj voog nrog asymmetric choj caj npab tsis kam.
2. Txiav txim siab seb lub ntsuas ntsuas qhov ntsuas qhov ntsuas puas puas raws li qhov ntsuas qhov ntsuas tau muab los ntawm lub Hoobkas, kev tawm tswv yim tsis kam, thiab tso tawm tsis kam. Qhov kev tawm tswv yim thiab tso tawm qhov tseem ceeb ntawm cov sensors txawv ntawm cov chaw tsim khoom rau cov chaw tsim khoom. Yog li qhov no yuav tsum tau kuaj xyuas raws li tus neeg tsim khoom daim ntawv lo. Siv ib lub multimeter los ntsuas qhov tsis kam ntawm cov khoom siv hluav taws xob thiab lub zog hauv av, nrog rau qhov tsis kam ntawm cov teeb liab kab thiab teeb liab hauv av. Yog hais tias tus nqi kuj yog ntau dua li lub Hoobkas tsis kam, nws qhia tau hais tias lub sensor tau overloaded thiab lub strain gauge tau deformed. Yog hais tias tus nqi kuj yog infinite, lub sensor strain gauge yog heev puas thiab kho tsis tau.
3. Vim tias cov hlau tawg tsis tu ncua thaum siv lub sensor, thaum lub txheej txheej ntawm cov hlau tiv thaiv tsis zoo, peb pom kev kuaj xyuas qhov tseeb ntawm cov xaim sensor. Peb siv lub ohm ntau ntawm ib lub multimeter los kuaj xyuas qhov txuas ntxiv ntawm cov xaim sensor. Yog tias qhov kev tiv thaiv tsis kawg, nws yog qhov tseeb tias yuav tawg, thiab yog tias qhov kev hloov pauv hloov, kev sib cuag tsis zoo.
