Li-piezoresistive pressure sensors ke mofuta oa sensor ea khatello e sebelisang phello ea piezoresistive ho lekanya khatello.Phello ea piezoresistive e bolela phetoho ea ho hanyetsa motlakase ha thepa ha e le tlas'a khatello ea mochine kapa deformation.Ka li-sensor tsa khatello ea piezoresistive, diaphragm kapa membrane e tloaelehile ho fetola khatello e sebelisoang ho fetoha ha mochine, e leng se etsang hore ho be le liphetoho ho hanyetsang likarolo tsa piezoresistive.
Kamano pakeng tsa khatello le tlhahiso bakeng sa sensor ea khatello ea piezoresistive e susumetsoa ke moralo le thepa ea thepa ea sensor.Mona ke kakaretso ea likamano tse akaretsang:
1.Direct Proportional Kamano:
Lintlheng tse ngata tsa khatello ea piezoresistive, ho na le kamano e tobileng le e tobileng pakeng tsa khatello e sebelisoang le phetoho ea ho hanyetsa motlakase.Ha khatello e ntse e eketseha, diaphragm kapa membrane ea sensor e fetoha, e leng se etsang hore likarolo tsa piezoresistive li be le khatello.Bothata bona bo lebisa phetohong ea ho hanyetsa, 'me phetoho ena e lekana le khatello e sebelisoang.Phetoho ea ho hanyetsa e ka lekanyetsoa ka ho sebelisa potoloho ea borokho ea Wheatstone kapa mekhoa e meng ea boemo ba matšoao.
2.Tlhahiso ea Borokho ba Wheatstone:
Hangata li-sensor tsa khatello ea piezoresistive li sebelisa potoloho ea borokho ea Wheatstone ho lekanya phetoho ea khanyetso ka nepo.Potoloho ea borokho e na le likarolo tse ngata tsa piezoresistive, tse ling tsa tsona li tlas'a khatello e bakoang ke khatello, ha tse ling ha li joalo.Phetoho e fapaneng ea ho hanyetsa pakeng tsa lintho tse senyehileng le tse sa tsitsang e sebelisetsoa ho hlahisa motlakase o hlahisoang o lekanang le khatello e sebelisoang.
3.Output Signal Conditioning:
Sephetho sa sensor ea khatello ea piezoresistive hangata ke lets'oao la analog voltage.Phallo ea motlakase e lumellana le phetoho ea ho hanyetsa 'me, ka lebaka leo, khatello e sebelisoang.Pokello ea boemo ba matšoao e ka sebelisoa ho holisa, ho sefa, le ho lekanya lets'oao la tlhahiso ho fumana lipalo tse nepahetseng tsa khatello.
4.Clibration:
Ka lebaka la ho mamellana ha tlhahiso le ho fapana ha thepa ea sensor, li-sensor tsa khatello ea piezoresistive hangata li hloka ho lekanya ho netefatsa litekanyo tse nepahetseng tsa khatello.Calibration e kenyelletsa ho fumana kamano e nepahetseng lipakeng tsa motlakase oa sensor le khatello ea 'nete e sebelisoang.Tekanyetso ena e ka finyelloa ka teko le papiso khahlanong le litekanyetso tsa litšupiso.
Ka kakaretso, kamano pakeng tsa khatello le tlhahiso bakeng sa sensor ea khatello ea piezoresistive hangata e na le mela le ho lekana.Ha khatello e ntse e eketseha, khanyetso ea sensor e fetoha, e lebisang phetohong e lumellanang le matla a phallo.Tlhophiso ea borokho ba Wheatstone le boemo ba matšoao bo phetha karolo ea bohlokoa ho fetoleng liphetoho tsa khanyetso hore e be tekanyo e sebelisoang le e nepahetseng ea khatello.
Nako ea poso: Sep-06-2023