Proximity sensor: iimpawu kunye namathuba

Kubomi bemihla ngemihla, i-proximity sensor lisetyenziswa phantse kuyo yonke indawo. On iimoto inceda yokupaka, phezu yokuthutha umkhondo intshukumo iimveliso phones mihla uvalela iphedi yamaqhosha emva kokuba isicelo kwefowuni endlebeni yakho. Kubomi bemihla ngemihla, kuba ngummangaliso yobuchwepheshe, kakhulu, uye wafumana indawo yayo. Ezinjalo izixhobo zifakwa endaweni iswitshi, umzekelo, esitratweni. Wakugqiba akungena ke endlwini, ukukhanya ujika ngokuzenzekela phambili, yaye emva kwexesha emsebenzini. Kwiinkqubo yokhuseleko akunakwenzeka ukwenza ngaphandle abenzi boluvo.

Ukwahlula proximity sensor iintlobo: capacitive, ezenza ukuba, enombala, cuke, microwave, magnetically, njl pyrometric Isiphumo reference ubalisa isixhobo ethile kuxhomekeke Umgaqo esisetyenziswa ngayo.

isivamvo Capacitive ndlela ikakhulu kusetyenziswa kwiinkqubo yokhuseleko kuba sibona indlela yento kwaye kugqitha ke asikwazi. Oku izahlule evela analogs cuke okanye infrared uyasabela umgama leyo kuxhomekeke ngokuqinileyo phezu kwento. Umzekelo, i-proximity sensor infrared iphendula thermal - infrared - neyophahla. izixhobo cuke ihlaba kuqala, uze emva koko ufumana imitha kubonakala ukusuka kumphezulu. Xa umgaqo ukusebenza, lo isivamvo sakufutshane sifana kakhulu Locator. Kwaye njengazo zonke ezilungileyo, ezivela iindawo nzima kubonakala Oluphawu elungileyo, kodwa ukusuka soft - hayi kakhulu. Kwaye umhlaseli nga uzakufun aukugqithisa oko, ubeke nje into ethambileyo. Ngenxa yezi zizathu, kungcono ukuba kusetyenziswe uhlobo abenzi boluvo capacitive, ingakumbi izixhobo ebonisa ukukhusela izinto ezibalulekileyo kunye enkulu. Kulo mzekelo, ucingo eriyali ngokohlobo a tye zixhonywe elucingweni kwaye uqhagamshele i-unit main ngokusebenzisa capacitor umthamo encinane.

abenzi boluvo Capacitive Kwakhona kuza kwiintlobo ezininzi:

1. abenzi le capacitors. Ukuba izikim yokugqibela ziyinxalenye ezibuthathaka sefowuni. Olu hlobo iyasetyenziswa okukwazi apho kuyimfuneko kwaye uvakalelo oluphezulu, umzekelo, kwi Isilumkiso ukuchukumisa izinto yesinyithi.

2. abenzi boluvo Capacitive usebenzisa yesekethe ulawulo rhoqo. Olu hlobo isixhobo ngaphantsi semngciphekweni wokuphazamiseka radio and crosstalk ngaphezu izixhobo kunye capacitors. Le fom ingasetyenziselwa kwimizi ngokuya kwi izibane, njalo njalo. N.

3. Le umahluko-capacitive woluvo. Baya yahluka ukusuka ngentla ngokuthi eriyali ezimbini endaweni enye, enika iziphumo kwezithandani yemozulu (eyimvula, ikhephu, izaqhwithi, iqabaka kunye ezifana. D.). intsimi yabo isicelo yahlukile abenzi boluvo kwi LC-wesekethe. Umahluko kuphela kukuba kufuneka ufake enye eriyali.

4. abenzi boluvo Resonant Capacitive. uphawu aqala kwenzeka kwisekethe igalelo, nto leyo sikwimo ngokungaphelelanga engalungelelananga ngokumalunga eliphezulu rhoqo uphawu generator. Ekubeni elidityaniswe isekethe usebenzisa encinane umthamo a capacitor (into efunekayo ukuze uxhathiso kwisekethe). abenzi boluvo ezinjalo ingasetyenziswa kokubini entsimini esemaphandleni kunye kwiindawo ezisezidolophini, kodwa ungabi kufutshane kakhulu imithombo enamandla kunomathotholo.