Kutentha ndi kukakamiza sensor kwa Cummins 3408627

Piezoelectric zotsatira

Pamene ma dielectrics ena amapunduka pogwiritsa ntchito mphamvu kumalo enaake, ndalamazo zimapangidwira pamtunda wina, ndipo mphamvu yakunja ikachotsedwa, imabwerera ku dziko lopanda malipiro. Chodabwitsa ichi amatchedwa positive piezoelectric effect. Malo amagetsi akagwiritsidwa ntchito poyang'ana polarization ya dielectric, dielectric imatulutsa makina osinthika kapena kupanikizika kwamakina mbali ina. Mphamvu yamagetsi yakunja ikachotsedwa, mapindikidwe kapena kupsinjika kumatha, komwe kumatchedwa inverse piezoelectric effect.

Piezoelectric element

Sensa ya piezoelectric ndi sensor yakuthupi komanso sensor yopangira mphamvu. Zida za piezoelectric zomwe zimagwiritsidwa ntchito kwambiri ndi Shi Ying crystal (SiO2 _ 2) ndi zoumba zopangira piezoelectric.

Piezoelectric mosasinthasintha wa piezoelectric ceramics ndi kangapo kuposa Shi Ying crystal, ndipo kukhudzika kwake kumakhala kwakukulu.

4) transducer photoelectric

1. photoelectric zotsatira

Kuwala kukayatsa chinthu, kumatha kuonedwa ngati chingwe cha ma photon omwe ali ndi mphamvu yowombera chinthucho. Ngati mphamvu ya photon ndi yaikulu mokwanira, ma electron mkati mwa chinthucho amachotsa zopinga za mkati ndikukhala ndi mphamvu zamagetsi zomwe zimatchedwa photoelectric effect.

1) Pansi pa kuwala, chodabwitsa kuti ma electron amatuluka pamwamba pa chinthu amatchedwa photoelectric effect yakunja, monga photoelectric chubu ndi photomultiplier chubu.

2) Pansi pa kuwala, chodabwitsa kuti resistivity chinthu kusintha amatchedwa mkati photoelectric zotsatira, monga photoresistor, photodiode, phototransistor ndi phototransistor.

3) Pakuwunika kwa kuwala, chinthu chimapanga mphamvu ya electromotive mbali ina, yomwe imatchedwa photovoltaic phenomenon, monga photovoltaic cell (chipangizo chomwe chimakhudzidwa ndi malo a kuwala kwa chochitikacho pamtunda wa photosensitive).

2 Photosensitive resistor

Pamene photoresistor imayatsidwa ndi kuwala, ma electron amasuntha kuti apange ma electron-hole pairs, zomwe zimapangitsa kuti resistivity ikhale yaying'ono. Kuwala kolimba, kumachepetsa kukana. Kuwala kwa zochitikazo kumasowa, awiri a electron-hole amachira, ndipo mtengo wotsutsa pang'onopang'ono umabwerera kumtengo wake woyambirira.

3. Photosensitive chubu

Machubu a Photosensitive (photodiode, phototransistor, phototransistor, etc.) ndi a zida za semiconductor.

4. Electroluminescence

Chochitika cha luminescence chomwe chimapangidwa ndi zida zolimba zowunikira pansi pa chisangalalo cha gawo lamagetsi zimatchedwa electroluminescence. Electroluminescence ndi njira yosinthira mwachindunji mphamvu yamagetsi kukhala mphamvu yowunikira. Light-emitting diode (LED) ndi chipangizo cha semiconductor electroluminescent chopangidwa ndi zida zapadera. Pamene PN mphambano ikutsogola kukondera, mphamvu yowonjezera imapangidwa chifukwa cha recombination ya electron-hole, yomwe imatulutsidwa mu mawonekedwe a photons ndi kutulutsa kuwala.