Ukuba uyila iimveliso ezinjengesixhobo sasekhaya, indawo yokhuseleko, inkqubo yokungena emnyango okanye iperipheral yekhompyuter, usenokukhetha ukufaka i-buzzer njengendlela ekukuphela kwayo yokunxibelelana nabasebenzisi okanye njengenxalenye yojongano olunzulu lomsebenzisi.
NguBruce Rose, iNjineli yeZicelo eziPhambili, i-CUI Devices
Kwimeko nayiphi na into, i-buzzer ingaba yindlela engabizi kwaye ethembekileyo yokuvuma umyalelo, ebonisa isimo sezixhobo okanye inkqubo, ukukhuthaza ukusebenzisana, okanye ukuphakamisa i-alamu.
Ngokusisiseko, i-buzzer idla ngokuba yimagnethi okanye uhlobo lwepiezoelectric.Ukhetho lwakho lunokuxhomekeka kwiimpawu zesiginali yokuqhuba, okanye amandla omsindo afunekayo kunye nendawo ebonakalayo ekhoyo.Unokukhetha kwakhona phakathi kwesalathisi kunye neentlobo ze-transducer, kuxhomekeke kwizandi ozifunayo kunye nezakhono zesekethe-design ekhoyo kuwe.
Makhe sijonge imigaqo esemva kweendlela ezahlukeneyo kwaye emva koko siqwalasele ukuba uhlobo lwemagnethi okanye i-piezo (kunye nokhetho lwesalathisi okanye i-actuator) ingalungela iprojekthi yakho.
Iibhuza zemagneti
Imagnethi buzzers zizixhobo eziqhutywa ngoku, ezifuna ngaphezulu kwe-20mA ukusebenza.Umbane osetyenzisiweyo unokuba ngaphantsi kwe-1.5V okanye ukuya kuthi ga kwi-12V.
Njengoko umfanekiso woku-1 ubonisa, umatshini uquka ikhoyili kunye nediski yeferromagnetic eguquguqukayo.Xa i-current idluliswa kwi-coil, i-disk itsalwa ngokubhekiselele kwi-coil kwaye ibuyele kwindawo yayo eqhelekileyo xa i-current ingahambi.
Oku kuphambuka kwedisk kubangela ukuba umoya ujikeleze kwindawo ekufutshane, kwaye oku kutolikwa njengesandi yindlebe yomntu.I-current ngokusebenzisa i-coil inqunywe ngumbane osetyenzisiweyo kunye ne-impedance ye-coil.
Umzobo 1. Ukwakhiwa kwe-magnetic buzzer kunye nomgaqo wokusebenza.
Piezo buzzers
Umzobo 2 ubonisa izakhi ze-piezo buzzer.Idiski yezinto ze-piezoelectric ixhaswa kwimida kwindawo evaliweyo kunye noqhagamshelwano lombane lwenziwe kumacala amabini ediski.Umbane osetyenziswa kuzo zonke ezi electrode ubangela ukuba imathiriyeli yepiezoelectric igqweke, nto leyo ekhokelela kwintshukumo yomoya enokubonwa njengesandi.
Ngokwahlukileyo kwi-magnetic buzzer, i-piezo buzzer sisixhobo esiqhutywa ngumbane;i-voltage yokusebenza idla ngokuba phezulu kwaye inokuba phakathi kwe-12V kunye ne-220V, ngelixa okwangoku ingaphantsi kwe-20mA.I-piezo buzzer imiliselwe njenge-capacitor, ngelixa i-magnetic buzzer yenziwe njengekhoyili kuthotho kunye ne-resistor.
Umzobo 2. Ukwakhiwa kwe-Piezo buzzer.
Kuzo zombini iintlobo, i-frequency yesiphumo sethoni evakalayo igqitywe ngokuphindaphindiweyo kwesignali yokuqhuba kwaye inokulawulwa kuluhlu olubanzi.Kwelinye icala, ngelixa i-piezo buzzers ibonisa unxibelelwano olunengqiqo phakathi kwamandla wesignali yegalelo kunye negunya lomsindo eliphumayo, amandla omsindo wee-buzzers zemagnethi awela kabukhali ngokuhla kwamandla ophawu.
Iimpawu zesiginali yedrive onayo inokuphembelela ukuba ukhetha imagnethi okanye i-piezo buzzer kwisicelo sakho.Nangona kunjalo, ukuba ukungxola kuyimfuno ephambili, i-piezo buzzers inokuvelisa iNqanaba loxinzelelo loSandi oluphezulu (SPL) kunee-buzzers zemagnethi kodwa ikwathande ukuba nonyawo olukhulu.
Isalathisi okanye i-transducer
Isigqibo sokuba ukhetha isalathisi okanye uhlobo lwe-transducer lukhokelwa luluhlu lwezandi ezifunekayo kunye noyilo lweesekethe ezihambelanayo zokuqhuba nokulawula i-buzzer.
Isalathisi siza kunye neesekethe zokuqhuba ezakhelwe kwisixhobo.Oku kwenza kube lula ukuyila kwesekethe (umzobo 3), okwenza ukuba iplagi-kunye-udlale indlela, ngokutshintshiselana nokunciphisa ukuguquguquka.Ngelixa ufuna ukusebenzisa i-voltage ye-dc kuphela, umntu unokufumana kuphela isignali yomsindo eqhubekayo okanye epholileyo kuba i-frequency igxininiswe ngaphakathi.Oku kuthetha ukuba izandi eziphindaphinda kaninzi njengeesiren okanye ii-chimes azinakwenzeka nge-signer buzzers.
Umzobo 3. Isalathisi se-buzzer sivelisa isandi xa i-voltage ye-dc isetyenziswa.
Ngaphandle kweesekethe zokuqhuba ezakhelwe ngaphakathi, i-transducer ikunika ukuguquguquka ukufezekisa izandi ezahlukeneyo usebenzisa iifrikhwensi ezahlukeneyo okanye i-waveshapes engafanelekanga.Ukongeza kwizandi ezisisiseko eziqhubekayo okanye ezibethayo, unokuvelisa izandi ezinjengezilumkiso zeethoni ezininzi, iisiren okanye iichime.
Umzobo we-4 ubonisa isiphaluka sesicelo se-transducer magnetic.Ukutshintsha ngokuqhelekileyo yi-bipolar transistor okanye i-FET kwaye isetyenziselwa ukukhulisa i-excitation waveform.Ngenxa ye-coil inductance, i-diode eboniswe kumzobo iyadingeka ukuze ibambe i-voltage ye-flyback xa i-transistor icinyiwe ngokukhawuleza.
Umzobo 4. I-transducer yamagnetic idinga isignali yokuvuselela, i-amplifier transistor kunye ne-diode yokusingatha i-voltage ye-flyback eyenziwe.
Ungasebenzisa i-excitation circuit efanayo kunye ne-piezo transducer.Ngenxa yokuba i-piezo transducer ine-inductance ephantsi, i-diode ayifuni.Nangona kunjalo, isiphaluka sidinga indlela yokusetha kwakhona i-voltage xa utshintshi luvulekile, olunokwenziwa ngokudibanisa i-resistor endaweni ye-diode, ngexabiso lokuchithwa kwamandla aphezulu.
Omnye unokunyusa umgangatho wesandi ngokunyusa i-voltage ye-peak-to-peak esetyenziswa kwi-transducer.Ukuba usebenzisa isekethe yebhulorho epheleleyo njengoko kubonisiwe kumfanekiso wesi-5, i-voltage esetyenzisiweyo iphindwe kabini kumbane wobonelelo okhoyo, okunika malunga ne-6dB amandla omsindo aphezulu aphumayo.
Umzobo 5. Ukusebenzisa isiphaluka sebhulorho kunokuphinda kabini i-voltage esetyenzisiweyo kwi-piezo transducer, ukunika i-6 dB amandla angaphezulu omsindo.
Ukuqukumbela
I-Buzzers ilula kwaye ayibizi, kwaye ukhetho lukhawulelwe kwiindidi ezine ezisisiseko: i-magnetic okanye i-piezoelectric, isalathisi okanye i-transducer.Iibhaza zemagneti zinokusebenza ukusuka kumbane osezantsi kodwa zifuna imisinga yedrive ephezulu kuneentlobo zepiezo.I-Piezo buzzers inokuvelisa i-SPL ephezulu kodwa ithande ukuba nonyawo olukhulu.
Unokusebenzisa i-buzzer yesalathisi nge-voltage ye-dc kuphela okanye ukhethe i-transducer yezandi eziyinkimbinkimbi ngakumbi ukuba uyakwazi ukongeza i-circuit yangaphandle efunekayo.Ngombulelo, i-CUI Devices ibonelela ngoluhlu lwemagnethi kunye ne-piezo buzzers kuyo nayiphi na isalathisi okanye iintlobo ze-transducer ukwenza ukhetho lwe-buzzer kuyilo lwakho lube lula ngakumbi.
Ixesha lokuposa: Sep-12-2023
