Sensor ea mocheso le khatello ea Cummins 3408627

Phello ea piezoelectric

Ha li-dielectric tse ling li holofala ka ho sebelisa matla ka tsela e itseng, litefiso li hlahisoa sebakeng se itseng, 'me ha matla a ka ntle a tlosoa, a khutlela sebakeng se sa lefelloeng. Ketsahalo ena e bitsoa positive piezoelectric effect. Ha tšimo ea motlakase e sebelisoa ka tataiso ea polarization ea dielectric, dielectric e tla hlahisa deformation ea mechine kapa khatello ea mochine ka tsela e itseng. Ha tšimo ea motlakase e ka ntle e tlosoa, deformation kapa khatello ea kelello e tla nyamela, e bitsoang inverse piezoelectric effect.

Ntho ea piezoelectric

Sensor ea piezoelectric ke sensor ea 'mele le sensor ea ho hlahisa matla. Lisebelisoa tsa piezoelectric tse sebelisoang ka tloaelo ke Shi Ying crystal (SiO2 _ 2) le lirafshoa tsa maiketsetso tsa piezoelectric.

Piezoelectric constant ea piezoelectric ceramics ke makhetlo a 'maloa ea Shi Ying crystal,' me kutlo ea eona e phahame.

4) transducer ea photoelectric

1. phello ea photoelectric

Ha khanya e khantša ntho, e ka nkoa e le letoto la li-photon tse nang le matla a ho qhomisa ntho. Haeba matla a photon a le boholo ka ho lekaneng, li-electrone tse ka hare ho ntho li tla tlosa lithibelo tsa matla a ka hare 'me li be le liphello tse tšoanang tsa motlakase, tse bitsoang photoelectric effect.

1) Tlas'a ketso ea leseli, ketsahalo ea hore lielektrone li baleha holim'a ntho e bitsoa "photoelectric effect" e ka ntle, e kang photoelectric tube le photomultiplier tube.

2) Tlas'a ketso ea leseli, ketsahalo ea hore ho hanyetsa ha ntho e fetoha ho bitsoa phello ea ka hare ea photoelectric, e kang photoresistor, photodiode, phototransistor le phototransistor.

3) Tlas'a ketso ea leseli, ntho e hlahisa matla a electromotive ka tsela e itseng, e bitsoang photovoltaic phenomenon, joalo ka photovoltaic cell (sesebelisoa se lemohang boemo ba sebaka sa leseli la ketsahalo sebakeng sa photosensitive).

2 Mohanyetsi oa Photosensitive

Ha photoresistor e khantšitsoe ke khanya, li-electrone li falla ho hlahisa lipara tsa electron-hole, tse etsang hore resistivity e be nyenyane. Ha khanya e le matla, e theola khanyetso. Leseli la ketsahalo lea nyamela, para ea electron-hole e hlaphoheloa, 'me boleng ba ho hanyetsa butle-butle bo khutlela boleng ba eona ba pele.

3. Tube ea photosensitive

Li-tubes tsa photosensitive (photodiode, phototransistor, phototransistor, joalo-joalo) ke tsa lisebelisoa tsa semiconductor.

4. Electroluminescence

Ketsahalo ea luminescence e hlahisoang ke lisebelisoa tse tiileng tsa luminescent tlas'a ho tsosoa ha tšimo ea motlakase e bitsoa electroluminescence. Electroluminescence ke mokhoa oa ho fetolela matla a motlakase ka kotloloho ho matla a bobebe. Light-emitting diode (LED) ke sesebelisoa sa semiconductor electroluminescent se nang le lisebelisoa tse khethehileng. Ha motsoako oa PN o lebeletsoe pele, matla a feteletseng a hlahisoa ka lebaka la ho tsosolosoa ha electron-hole, e lokolloa ka mokhoa oa photons le ho hlahisa leseli.