Yog tias koj tab tom tsim cov khoom lag luam zoo li cov khoom siv hauv tsev, vaj huam sib luag kev ruaj ntseg, lub qhov rooj nkag los yog lub khoos phis tawj, koj tuaj yeem xaiv ua lub suab nrov raws li ib qho kev cuam tshuam nrog cov neeg siv lossis ua ib feem ntawm cov neeg siv ntau dua.
Los ntawm Bruce Rose, Tus Thawj Saib Xyuas Kev Siv Khoom Siv, CUI Devices
Nyob rau hauv ob qho tib si, lub buzzer tuaj yeem yog qhov pheej yig thiab txhim khu kev qha ntawm kev lees paub cov lus txib, qhia txog cov xwm txheej ntawm cov cuab yeej lossis cov txheej txheem, kev sib cuam tshuam, lossis tsa lub tswb.
Hauv paus, lub buzzer feem ntau yog ib hom magnetic los yog piezoelectric.Koj qhov kev xaiv tuaj yeem nyob ntawm tus yam ntxwv ntawm lub teeb liab tsav, lossis lub zog tso zis hluav taws xob xav tau thiab qhov chaw lub cev muaj.Koj tuaj yeem xaiv ntawm qhov taw qhia thiab hom transducer, nyob ntawm lub suab koj xav tau thiab cov kev txawj tsim hluav taws xob muaj rau koj.
Cia peb saib cov hauv paus ntsiab lus tom qab cov txheej txheem sib txawv thiab tom qab ntawd txiav txim siab seb hom magnetic los yog piezo (thiab qhov kev xaiv ntawm qhov taw qhia lossis tus actuator) yuav raug rau koj qhov project.
Sib nqus buzzers
Sib nqus buzzers yog qhov tseem ceeb tam sim no-tsav cov khoom siv, feem ntau xav tau ntau dua 20mA los ua haujlwm.Kev siv hluav taws xob tuaj yeem qis li 1.5V lossis txog li 12V.
Raws li daim duab 1 qhia tau hais tias, cov txheej txheem muaj xws li lub kauj thiab hloov pauv ferromagnetic disk.Thaum cov tam sim no dhau los ntawm lub kauj, lub disk yog nyiam ntawm lub kauj thiab rov qab mus rau nws txoj haujlwm qub thaum qhov tam sim no tsis ntws.
Qhov deflection ntawm lub disk ua rau huab cua nyob ib puag ncig txav, thiab qhov no txhais tau tias yog lub suab ntawm tib neeg pob ntseg.Tam sim no los ntawm lub kauj yog txiav txim siab los ntawm kev siv hluav taws xob thiab cov coil impedance.
Daim duab 1. Sib nqus buzzer kev tsim kho thiab kev khiav hauj lwm hauv paus ntsiab lus.
Piezo buzzers
Daim duab 2 qhia cov ntsiab lus ntawm piezo buzzer.Ib daim disk ntawm cov khoom siv piezoelectric tau txais kev txhawb nqa ntawm cov npoo hauv ib lub thawv thiab cov khoom siv hluav taws xob yog tsim rau ntawm ob sab ntawm lub disk.Ib qho hluav taws xob siv thoob plaws cov electrodes ua rau cov khoom siv piezoelectric deform, uas ua rau lub zog ntawm huab cua uas tuaj yeem kuaj pom tias yog suab.
Nyob rau hauv sib piv rau lub magnetic buzzer, lub piezo buzzer yog ib tug voltage-tsav ntaus ntawv;Qhov kev khiav hauj lwm voltage feem ntau yog siab dua thiab tej zaum yuav nyob nruab nrab ntawm 12V thiab 220V, thaum tam sim no tsawg dua 20mA.Lub piezo buzzer yog qauv raws li ib tug capacitor, whereas lub magnetic buzzer yog qauv raws li ib tug kauj nyob rau hauv series nrog ib tug resistor.
Daim duab 2. Piezo buzzer siv.
Rau ob hom, qhov zaus ntawm lub suab nrov tau txiav txim siab los ntawm qhov zaus ntawm lub teeb liab tsav tsheb thiab tuaj yeem tswj tau ntau yam.Ntawm qhov tod tes, thaum piezo buzzers nthuav tawm qhov kev sib raug zoo ntawm cov tswv yim teeb liab lub zog thiab lub zog tso zis, lub suab lub zog ntawm cov hlau nplaum buzzers poob qis nrog lub zog poob qis.
Cov yam ntxwv ntawm lub teeb liab tsav uas koj muaj tuaj yeem cuam tshuam txawm tias koj xaiv cov hlau nplaum lossis piezo buzzer rau koj daim ntawv thov.Txawm li cas los xij, yog tias lub suab nrov yog qhov tseem ceeb, piezo buzzers feem ntau tuaj yeem tsim lub suab siab dua (SPL) dua li cov hlau nplaum sib nqus tab sis kuj yuav muaj qhov hneev taw loj dua.
Qhov taw qhia lossis transducer
Qhov kev txiav txim siab seb puas yuav xaiv ib qho taw qhia lossis hom transducer yog coj los ntawm ntau lub suab uas yuav tsum tau ua thiab tus qauv tsim ntawm cov khoom siv hluav taws xob cuam tshuam los tsav thiab tswj lub buzzer.
Ib qho taw qhia los nrog tsav tsheb circuitry ua rau hauv lub cuab yeej.Qhov no ua kom yooj yim rau kev tsim hluav taws xob (daim duab 3), ua kom muaj kev sib txuas thiab kev ua si, hauv kev sib pauv rau kev txo qis.Thaum koj tsuas yog yuav tsum tau siv lub dc voltage, ib tus tsuas tuaj yeem tau txais lub teeb liab txuas ntxiv lossis lub suab nrov vim tias qhov zaus raug kho sab hauv.Qhov no txhais tau hais tias ntau lub suab nrov xws li sirens lossis chimes tsis tuaj yeem ua tau nrog cov cim buzzers.
Daim duab 3. Qhov taw qhia buzzer ua suab thaum siv dc voltage.
Tsis muaj kev tsav tsheb hauv Circuit Court, lub transducer muab qhov yooj yim rau koj kom ua tiav ntau lub suab siv ntau zaus lossis arbitrary waveshapes.Ntxiv nrog rau cov suab nrov txuas ntxiv lossis suab nrov, koj tuaj yeem tsim cov suab xws li ntau lub suab ceeb toom, sirens lossis chimes.
Daim duab 4 qhia txog daim ntawv thov Circuit Court rau cov hlau nplaum transducer.Qhov kev hloov no feem ntau yog ib qho kev hloov pauv bipolar lossis FET thiab yog siv los ua kom muaj zog ntawm qhov excitation waveform.Vim yog lub coil lub inductance, lub diode qhia nyob rau hauv daim duab yuav tsum tau clamp lub flyback voltage thaum lub transistor raug tua sai.
Daim duab 4. Lub tshuab hluav taws xob sib nqus yuav tsum muaj lub teeb liab excitation, amplifier transistor thiab diode los tswj qhov hluav taws xob flyback.
Koj tuaj yeem siv qhov zoo sib xws hauv Circuit Court nrog lub piezo transducer.Vim hais tias lub piezo transducer muaj tsawg inductance, lub diode tsis tas yuav tsum tau.Txawm li cas los xij, lub voj voog xav tau ib txoj hauv kev rov pib dua qhov hluav taws xob thaum lub qhov hloov pauv qhib, uas tuaj yeem ua tiav los ntawm kev ntxiv cov resistor nyob rau hauv qhov chaw ntawm diode, ntawm tus nqi siab dua lub zog dissipation.
Ib qho tuaj yeem ua kom lub suab nce qib los ntawm kev nce lub ncov-rau-nruab nrab voltage thov hla lub transducer.Yog hais tias koj siv ib tug tag nrho-bridge Circuit Court raws li qhia nyob rau hauv daim duab 5, cov ntaub ntawv voltage yog ob zaug loj npaum li cov khoom muaj voltage, uas muab rau koj txog 6dB ntau dua tso zis suab zog.
Daim duab 5. Kev siv tus choj txuas tuaj yeem ua ob npaug ntawm qhov hluav taws xob siv rau lub piezo transducer, muab 6 dB ntxiv lub zog.
Xaus
Buzzers yog qhov yooj yim thiab pheej yig, thiab cov kev xaiv tsuas yog txwv rau plaub yam yooj yim: magnetic los yog piezoelectric, qhov taw qhia lossis transducer.Sib nqus buzzers tuaj yeem ua haujlwm los ntawm cov hluav taws xob qis tab sis xav tau cov tsav tam sim no ntau dua li hom piezo.Piezo buzzers tuaj yeem tsim SPL siab dua tab sis zoo li muaj qhov hneev taw loj dua.
Koj tuaj yeem ua haujlwm qhov taw qhia buzzer nrog tsuas yog dc voltage lossis xaiv lub transducer rau cov suab nrov dua yog tias koj tuaj yeem ntxiv qhov tsim nyog sab nraud circuitry.Ua tsaug, CUI Devices muaj ntau yam sib nqus thiab piezo buzzers nyob rau hauv ob qho tib si qhov taw qhia lossis hom transducer kom xaiv lub buzzer rau koj tus tsim txawm yooj yim dua.
Post lub sij hawm: Sep-12-2023
