Uma uklama imikhiqizo efana nomshini wasekhaya, iphaneli yokuvikela, isistimu yokungena emnyango noma i-peripheral yekhompyutha, ungase ukhethe ukufaka i-buzzer njengendlela eyodwa yokuxhumana nabasebenzisi noma njengengxenye yokusetshenziswa kubonwa okuyinkimbinkimbi.
Ngu-Bruce Rose, Unjiniyela Wezicelo Oyinhloko, Amadivayisi e-CUI
Kunoma ikuphi, i-buzzer ingaba yindlela engabizi nethembekile yokuvuma umyalo, ebonisa isimo semishini noma inqubo, ekhuthaza ukusebenzisana, noma ukuphakamisa i-alamu.
Ngokuyisisekelo, i-buzzer ngokuvamile iwuhlobo lukazibuthe noma lwe-piezoelectric.Okukhethayo kungancika ezicini zesignali yedrayivu, noma amandla omsindo okukhiphayo adingekayo kanye nesikhala soqobo esitholakalayo.Ungaphinda ukhethe phakathi kwezinhlobo ze-indicator kanye ne-transducer, kuye ngemisindo oyifunayo namakhono omklamo wesekethe atholakalayo kuwe.
Ake sibheke izimiso ezingemuva kwezinqubo ezahlukene bese sicabangela ukuthi uhlobo lukazibuthe noma lwe-piezo (kanye nokukhetha inkomba noma i-actuator) lungalungela iphrojekthi yakho.
Amabhaza kazibuthe
Amabhaza kazibuthe empeleni angamadivayisi ashayelwa manje, ngokuvamile adinga okungaphezu kuka-20mA ukuze asebenze.I-voltage esetshenzisiwe ingaba ngaphansi njenge-1.5V noma ifinyelele cishe ku-12V.
Njengoba umfanekiso 1 ubonisa, umshini uhlanganisa ikhoyili kanye nediski ye-ferromagnetic eguquguqukayo.Lapho i-current idluliswa kukhoyili, idiski ikhangwa ibheke kukhoyili futhi ibuyela endaweni yayo evamile lapho i-current ingagelezi.
Lokhu kuchezuka kwediski kubangela ukuba umoya oseduze uhambe, futhi lokhu kuchazwa njengomsindo indlebe yomuntu.I-current ngokusebenzisa ikhoyili inqunywa i-voltage esetshenzisiwe kanye ne-impedance yekhoyili.
Umfanekiso 1. Ukwakhiwa kwebhaza kazibuthe kanye nesimiso sokusebenza.
I-Piezo buzzers
Umfanekiso 2 ubonisa izici ze-piezo buzzer.Idiski ye-piezoelectric material isekelwa emaphethelweni endaweni ebiyelwe futhi okuthintwayo kagesi kwenziwa ezinhlangothini ezimbili zediski.I-voltage esetshenziswa kuwo wonke lawa ma-electrode idala ukuthi impahla ye-piezoelectric igxumeke, okuholela ekuhambeni komoya okungatholakala njengomsindo.
Ngokungafani ne-magnetic buzzer, i-piezo buzzer iyithuluzi eliqhutshwa amandla kagesi;i-voltage yokusebenza ngokuvamile iphakeme futhi ingase ibe phakathi kuka-12V no-220V, kuyilapho yamanje ingaphansi kuka-20mA.I-piezo buzzer imodelwe njenge-capacitor, kuyilapho i-buzzer kazibuthe imodelwa njengekhoyili ochungechungeni olunomphikisi.
Umfanekiso 2. Ukwakhiwa kwe-piezo buzzer.
Kuzo zombili izinhlobo, imvamisa yethoni ezwakalayo ewumphumela inqunywa imvamisa yesiginali yokushayela futhi ingalawulwa ebangeni elibanzi.Ngakolunye uhlangothi, ngenkathi amabhaza e-piezo ebonisa ubudlelwano bomugqa phakathi kwamandla esiginali yokufaka namandla omsindo okukhiphayo, amandla omsindo wezinsimbi kazibuthe ehla kakhulu ngamandla esignali anciphayo.
Izici zesignali yedrayivu onayo zingathonya ukuthi ukhetha i-magnetic buzzer noma i-piezo yohlelo lwakho lokusebenza.Kodwa-ke, uma ukuphakama kuyisidingo esiyinhloko, amabhaza e-piezo ngokuvamile angakhiqiza Izinga Lokucindezela Komsindo eliphezulu (SPL) kunamabhaza kazibuthe kodwa futhi avame ukuba nendawo enkulu.
Inkomba noma i-transducer
Isinqumo sokuthi ukhetha inkomba noma uhlobo lwe-transducer siqondiswa ububanzi bemisindo edingekayo kanye nomklamo wokujikeleza okuhambisanayo ukuze ushayele futhi ulawule i-buzzer.
Inkomba iza ne-circuitry yokushayela eyakhelwe kudivayisi.Lokhu kwenza idizayini yesekethe ibe lula (umdwebo 3), inike amandla indlela yokuxhuma nokudlala, ngokushintshanisa ukuguquguquka okuncishisiwe.Ngenkathi udinga kuphela ukusebenzisa i-voltage ye-dc, umuntu angathola kuphela isignali yomsindo eqhubekayo noma eshaywayo njengoba imvamisa igxilile ngaphakathi.Lokhu kusho ukuthi imisindo yama-multi-frequency efana nama-siren noma ama-chime akwenzeki ngamabhaza ezinkomba.
Umfanekiso 3. Ibhaza yenkomba ikhiqiza umsindo lapho kusetshenziswa i-dc voltage.
Njengoba ingekho izifunda zokushayela ezakhelwe ngaphakathi, i-transducer ikunikeza ukuguquguquka ukuze ufinyelele imisindo ehlukahlukene usebenzisa amaza ahlukahlukene noma amagagasi angavamile.Ngokungeziwe kumisindo eqhubekayo eyisisekelo noma eshayayo, ungakhiqiza imisindo efana nezixwayiso zamathoni amaningi, izinhlabamkhosi noma ama-chime.
Umfanekiso wesi-4 ubonisa isifunda sohlelo lwe-transducer kazibuthe.Iswishi ngokuvamile iyi-bipolar transistor noma i-FET futhi isetshenziselwa ukukhulisa i-excitation waveform.Ngenxa ye-inductance yekhoyili, i-diode eboniswe kumdwebo iyadingeka ukuze ubambe i-voltage ye-flyback lapho i-transistor icishwa ngokushesha.
Umfanekiso 4. I-transducer kazibuthe idinga isignali ye-excitation, i-amplifier transistor kanye ne-diode ukuze ibambe i-voltage ye-flyback eyenziwe.
Ungasebenzisa i-excitation circuit efanayo ne-piezo transducer.Ngenxa yokuthi i-piezo transducer ine-inductance ephansi, i-diode ayidingeki.Kodwa-ke, isifunda sidinga indlela yokusetha kabusha i-voltage lapho inkinobho ivuliwe, engenziwa ngokungeza i-resistor esikhundleni se-diode, ngezindleko zokuchithwa kwamandla aphezulu.
Umuntu angakwazi futhi ukukhulisa izinga lomsindo ngokukhuphula i-voltage esuka phezulu ukuya phezulu esetshenziswa ku-transducer.Uma usebenzisa isekethe enebhuloho eligcwele njengoba kukhonjisiwe kumfanekiso wesi-5, i-voltage esetshenzisiwe inkulu ngokuphindwe kabili kunevoltheji etholakalayo, ekunikeza amandla omsindo okukhiphayo angaba ngu-6dB aphezulu.
Umfanekiso 5. Ukusebenzisa isifunda sebhuloho kungaphinda kabili i-voltage esetshenziswa ku-transducer ye-piezo, kunikeze amandla omsindo engeziwe angu-6 dB.
Isiphetho
Ama-Buzzers alula futhi awabizi, futhi ukukhetha kunqunyelwe ezigabeni ezine eziyisisekelo: kazibuthe noma i-piezoelectric, inkomba noma i-transducer.Amabhaza kazibuthe angasebenza kusuka kuma-voltage aphansi kodwa adinga amaza okushayela aphezulu kunezinhlobo ze-piezo.Ama-Piezo buzzers angakhiqiza i-SPL ephakeme kodwa avame ukuba nonyawo olukhudlwana.
Ungakwazi ukusebenzisa i-indicator buzzer nge-voltage ye-dc kuphela noma ukhethe i-transducer ukuze uthole imisindo eyinkimbinkimbi uma ukwazi ukwengeza ukujikeleza kwangaphandle okudingekayo.Ngokujabulisayo, Amadivayisi e-CUI anikezela ngezinhlobonhlobo zamabhaza kazibuthe kanye ne-piezo kunoma iyiphi inkomba noma izinhlobo ze-transducer ukwenza ukukhetha kwebhaza kumklamo wakho kube lula nakakhulu.
Isikhathi sokuthumela: Sep-12-2023
