Tembiricha uye kudzvanywa sensor yeCummins 3408627

Piezoelectric effect

Kana mamwe ma dielectric akaremara nekushandisa simba mune imwe nzira, mhosva dzinogadzirwa pane imwe nzvimbo, uye kana simba rekunze rabviswa, vanodzokera kune isina kubhadhariswa. Ichi chiitiko chinonzi positive piezoelectric effect. Kana munda wemagetsi ukaiswa munzira yepolarization yedielectric, iyo dielectric inoburitsa mechanical deformation kana mechanical pressure mune imwe nzira. Kana iyo yekunze yemagetsi yabviswa, deformation kana kushushikana kunopera, iyo inonzi inverse piezoelectric effect.

Piezoelectric chinhu

Piezoelectric sensor inzwa yemuviri uye sensor yekugadzira simba. Zvinowanzoshandiswa piezoelectric zvinhu Shi Ying crystal (SiO2 _ 2) uye yakagadzirwa piezoelectric ceramics.

Iyo piezoelectric inogara yepiezoelectric ceramics kanoverengeka iyo yeShi Ying crystal, uye kunzwisiswa kwayo kwakakwira.

4) photoelectric transducer

1. photoelectric effect

Kana chiedza chikavheneka chinhu, chinogona kutorwa setambo yephotons ine simba e bombarding chinhu. Kana simba remafotoni rakakura zvakakwana, maerekitironi ari mukati mechinhu achabvisa zvipingamupinyi zvemasimba emukati uye ave nemagetsi anowirirana, anonzi photoelectric effect.

1) Pasi pekuita kwechiedza, chiitiko chekuti maerekitironi anopukunyuka kubva pamusoro pechinhu chinonzi kunze photoelectric effect, senge photoelectric chubhu uye photomultiplier chubhu.

2) Pasi pechiito chechiedza, chiitiko chekuti resistivity yechinhu chinoshanduka chinonzi mukati photoelectric effect, yakadai se photoresistor, photodiode, phototransistor uye phototransistor.

3) Pasi pekuita kwechiedza, chinhu chinoburitsa simba remagetsi mune imwe nzira, iyo inonzi photovoltaic phenomenon, senge photovoltaic cell (mudziyo unonzwa nezvenzvimbo yechiitiko chechiedza panzvimbo yephotosensitive surface).

2 Photosensitive resistor

Kana photoresistor yakavhenekerwa nechiedza, maerekitironi anotama kuti abudise electron-hole pairs, izvo zvinoita kuti resistivity ive duku. Iyo yakasimba chiedza, iyo yakaderera kushorwa. Chiedza chechiitiko chinonyangarika, iyo electron-hole peya inopora, uye kukosha kwekupokana kunodzokera zvishoma nezvishoma kune kukosha kwayo kwepakutanga.

3. Photosensitive chubhu

Photosensitive tubes (photodiode, phototransistor, phototransistor, nezvimwewo) ndeye semiconductor zvishandiso.

4. Electroluminescence

Iyo luminescence phenomenon inogadzirwa neyakaoma luminescent zvinhu pasi pekunakidzwa kwemunda wemagetsi inonzi electroluminescence. Electroluminescence inzira yekushandura zvakananga simba remagetsi kuita simba rechiedza. Chiedza-emitting diode (LED) chinhu chesemiconductor electroluminescent mudziyo wakagadzirwa nezvinhu zvakakosha. Kana iyo PN junction ichienda mberi yakarerekera, simba rakawandisa rinogadzirwa nekuda kwekubatanidzwazve kwe electron-hole, iyo inoburitswa nenzira yemafotoni uye inoburitsa chiedza.