Sib nqus-sensitive txoj hauj lwm sensor
Magneto-sensitive txoj hauj lwm sensors yog ua los ntawm semiconductor ntsiab uas rhiab heev rau magnetic teb, xws li Hall nyhuv los yog magnetoresistance nyhuv. Kev sib nqus-rhiab qhov chaw sensors suav nrog Hall cov ntsiab lus lossis Hall integrated circuits, magnetoresistor thiab magnetoresistive diodes. Ntawm lawv, Hall element thiab Hall integrated circuit raws li lub hauv paus ntsiab lus ntawm Hall effect yog sau ua ke hu ua Hall effect magnetic sensor, los yog Hall sensor luv luv. Thaum ib tug tam sim no ntws los ntawm ib tug semiconductor nyob rau hauv ib tug magnetic teb, ib tug voltage (Hall electromotive force) yog generated tom qab. Qhov tshwm sim no tom qab hu ua Hall effect. Lub ntsiab lus Hall ua haujlwm ntawm lub hauv paus ntsiab lus uas Hall electromotive quab yuam nws tsim yog proportional rau lub orthogonal magnetic teb zog. Txawm li cas los xij, Hall lub caij yog nyias thiab tsis yooj yim, thiab nws cov Hall electromotive quab yuam yog me me, uas yuav tsum tau siv lub tshuab hluav taws xob sab nraud, uas tsis yooj yim rau siv.
Lub Hall integrated circuit yog tsim los ntawm lub hauv paus ntsiab lus ntawm Hall effect, siv kev ntim khoom thiab sib dhos tshuab. Cov khoom Hall thiab qhov tsim nyog peripheral circuits tau muab tso rau hauv. Nws tuaj yeem hloov cov teeb liab sib nqus tau yooj yim rau hauv qhov loj dua amplitude hluav taws xob teb. Lub teeb liab, thiab tib lub sijhawm muaj cov kev xav tau los tiv thaiv kev ua haujlwm txhim khu kev qha ntawm kev lag luam daim ntawv thov ib puag ncig. Hall IC muaj cov yam ntxwv ntawm kev tsis sib cuag, kev siv hluav taws xob tsawg, lub neej ua haujlwm ntev, cov lus teb ntau zaus, thiab lwm yam. Nws yog encapsulated nrog cov ntaub ntawv yas rau hauv ib qho kev sib koom ua ke, yog li nws tuaj yeem ua haujlwm ruaj khov hauv ntau qhov chaw hnyav. Vim tias Hall txoj hauj lwm sensor muaj qhov zoo ntawm cov qauv yooj yim, me me, hloov tau yooj yim thiab yooj yim installation, yooj yim electromechanical kev koom ua ke, thiab tus nqi qis, nws yog dav siv tam sim no. Tam sim no, Hall IC sensor yog lub ntsiab rotor txoj hauj lwm sensor siv nyob rau hauv DC brushless lub cev muaj zog.
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