Hitachi excavator qhov chaw EX200-2/3/5 siab hloov sensor 4436271

Ua haujlwm mechanism

1) Magnetoelectric effect

Raws li Faraday txoj cai ntawm electromagnetic induction, qhov loj ntawm induced electromotive quab yuam generated nyob rau hauv lub kauj yog nyob ntawm qhov kev hloov pauv ntawm cov hlau nplaum flux dhau los ntawm lub kauj thaum N-tig coil txav mus rau hauv magnetic teb thiab txiav cov magnetic force kab ( los yog qhov sib nqus flux hloov ntawm magnetic teb qhov chaw coil nyob).

Linear txav magnetoelectric sensor

Lub linear txav magnetoelectric sensor muaj cov hlau nplaum tas mus li, ib lub kauj thiab ib lub tsev nyob sensor.

Thaum lub plhaub vibrates nrog lub vibrating lub cev yuav tsum tau ntsuas thiab lub vibration zaus yog ntau dua li lub ntuj zaus ntawm lub sensor, vim hais tias lub caij nplooj ntoos hlav yog mos thiab qhov loj ntawm qhov txav yog qhov loj, nws yog lig rau qhov txav mus. kom vibrate (sawv ntsug) nrog lub cev vibrating. Lub sijhawm no, qhov sib txheeb ntawm qhov nrawm ntawm cov hlau nplaum thiab lub kauj yog ze rau qhov kev vibration ceev ntawm lub vibrator.

Hom rotary

Cov hlau mos, coil thiab cov hlau nplaum ruaj khov yog tsau. Lub ntsuas iav ua los ntawm cov khoom siv hlau nplaum yog ntsia rau ntawm qhov ntsuas lub cev. Txhua zaus ib tus hniav tig, qhov sib nqus ntawm cov hlau nplaum sib nqus tsim ntawm lub ntsuas iav thiab cov hlau mos hloov ib zaug, thiab cov hlau nplaum sib nqus kuj hloov ib zaug. Qhov zaus (tus naj npawb ntawm cov pulses) ntawm induced electromotive quab yuam nyob rau hauv lub kauj yog sib npaug zos rau cov khoom ntawm tus naj npawb ntawm cov hniav ntawm lub ntsuas iav thiab lub rotating ceev.

Hall nyhuv

Thaum lub semiconductor lossis hlau ntawv muab tso rau hauv qhov chaw sib nqus, thaum lub sijhawm tam sim no (nyob rau hauv lub dav hlau kev taw qhia ntawm cov ntawv ci perpendicular mus rau magnetic teb) ntws, electromotive quab yuam yog generated nyob rau hauv cov kev taw qhia perpendicular mus rau magnetic teb thiab tam sim no. Qhov tshwm sim no hu ua Hall effect.

Hall element

Cov khoom siv Hall feem ntau yog germanium (Ge), silicon (Si), indium antimonide (InSb), indium arsenide (InAs) thiab lwm yam. N-hom germanium yog ib qho yooj yim los tsim thiab muaj zoo Hall coefficient, kub kev ua tau zoo thiab linearity. P-hom silicon muaj qhov zoo tshaj plaws linearity, thiab nws cov Hall coefficient thiab qhov kub thiab txias ua haujlwm zoo ib yam li cov N-hom germanium, tab sis nws cov khoom siv hluav taws xob tsawg thiab nws lub peev xwm thauj khoom tsis zoo, yog li nws feem ntau tsis siv los ua ib qho Hall. keeb.