Iplagi yokuva ioyile ibhekisa kwinzwa yoxinzelelo lweoyile. Umgaqo-siseko kukuba xa injini isebenza, isixhobo sokulinganisa uxinzelelo sibona uxinzelelo lweoyile, siguqule isiginali yoxinzelelo kwisignali yombane, kwaye iyithumele kwisekethe yokulungisa umqondiso. Emva kokwandiswa kombane kunye nokwandiswa kwangoku, uphawu loxinzelelo olwandisiweyo ludityaniswe negeyiji yoxinzelelo lweoyile ngomgca wesignali.
Uxinzelelo lweoyile ye-injini luboniswa ngumlinganiselo wangoku phakathi kweekhoyili ezimbini kwisalathisi soxinzelelo lweoyile. Emva kokwandiswa kombane kunye nokwandiswa kwangoku, uphawu loxinzelelo luthelekiswa ne-alarm voltage ebekwe kwisekethe ye-alarm. Xa i-alarm voltage iphantsi kune-alarm voltage, isiphaluka se-alarm sikhupha isignali ye-alamu kwaye sikhanyise isibane se-alamu ngomgca we-alamu.
Inzwa yoxinzelelo lweoyile sisixhobo esibalulekileyo sokubona uxinzelelo lweoyile kwinjini yemoto. Imilinganiselo inceda ukulawula ukusebenza okuqhelekileyo kwe-injini.
Iplagi ye-oyile yokubona i-oyile yenziwe yi-chip sensor ye-filimi engqingqwa, i-signal processing circuit, indlu, isixhobo sebhodi yesiphaluka esisisigxina kunye nezikhokelo ezimbini (umgca wesignali kunye nomgca we-alamu). Isekethe yokucwangcisa umqondiso iquka isekethe yonikezelo lwamandla, isekethe yembuyekezo ye-sensor, i-zerosetting circuit, i-voltage amplifying circuit, i-current amplifying circuit, i-filter circuit kunye ne-alarm circuit.
