Yuav ua li cas RF 433/868 Cuam Tshuam Alarms koom ua ke nrog Control Panels?
Koj puas xav paub txog yuav ua li cas lub tswb hluav taws xob RF hluav taws xob tau kuaj pom cov pa taws thiab ceeb toom rau lub hauv paus vaj huam sib luag lossis kev saib xyuas? Hauv tsab xov xwm no, peb yuav rhuav tshem cov ntsiab lus tseem ceeb ntawm ib qhoRF pa taws tswb, tsom ntsoov rau yuav ua li cas covMCU (microcontroller) converts analog signalsrau hauv cov ntaub ntawv digital, siv qhov pib-raws li algorithm, thiab tom qab ntawd cov teeb liab digital hloov mus rau 433 lossis 868 RF teeb liab los ntawm FSK kev hloov kho mechanism thiab xa mus rau cov tswj vaj huam sib luag ua ke tib lub RF module.
1. Los ntawm Kev Tshawb Pom Cov Hluav Taws Xob mus rau Kev Hloov Cov Ntaub Ntawv
Hauv plawv ntawm RF pa taws tswb yog aphotoelectric sensoruas reacts rau lub xub ntiag ntawm pa taws particles. Lub sensor outputs ibanalog voltageproportional rau qhov ntom ntawm cov pa luam yeeb. IbMCUnyob rau hauv lub tswb siv nwsADC (Analog-rau-Digital Converter)los hloov cov analog voltage no rau hauv cov txiaj ntsig digital. Los ntawm kev ua piv txwv tsis tu ncua cov kev nyeem ntawv no, MCU tsim cov ntaub ntawv hauv lub sijhawm ntawm cov pa luam yeeb ntau ntau.
2. MCU Threshold Algorithm
Ntau dua li xa txhua qhov kev nyeem ntawv tawm mus rau RF transmitter, MCU khiav ib qhoalgorithmtxhawm rau txiav txim siab seb cov pa luam yeeb ntau dhau ntawm qhov pib ua ntej. Yog tias qhov concentration qis dua qhov kev txwv no, lub tswb nyob twj ywm kom tsis txhob muaj lub tswb cuav lossis teeb meem. Ib zaug lubnyeem ntawv digital surpassesqhov chaw pib, MCU faib nws raws li qhov muaj peev xwm hluav taws kub, ua rau cov kauj ruam tom ntej hauv cov txheej txheem.
Cov ntsiab lus tseem ceeb ntawm lub algorithm
Noise Filtering: MCU tsis quav ntsej cov kev ncua sij hawm lossis qhov hloov pauv me me kom txo qis cov tswb tsis tseeb.
Qhov nruab nrab thiab sij hawm kuaj xyuas: Ntau tus qauv tsim muaj xws li lub qhov rais lub sijhawm (xws li, nyeem ntawv dhau ib lub sijhawm) kom paub meej tias cov pa luam yeeb tsis tu ncua.
Kev sib piv: Yog tias qhov nruab nrab lossis qhov siab tshaj qhov nyeem ntawv tsis tu ncua siab tshaj qhov pib, lub tswb ntsuas pib ceeb toom.
3. RF Kis los ntawm FSK
Thaum MCU txiav txim siab tias muaj kev ceeb toom tau ntsib, nws xa cov teeb liab ceeb toom los ntawmSPIlos yog lwm qhov kev sib txuas lus interface rau ib qhoRF transceiver nti. Cov chip no sivFSK (Frequency Shift Keying)modulation ORASK (Amplitude-Shift Keying)los encode cov ntaub ntawv tswb digital mus rau ib qho zaus (xws li, 433MHz lossis 868MHz). Lub tswb ceeb toom yog tom qab ntawd xa mus rau wirelessly mus rau chav txais-feem ntau atswj vaj huam sib luaglos yogsaib xyuas qhov system- qhov twg nws yog parsed thiab tso tawm raws li kev ceeb toom hluav taws.
Vim li cas FSK Modulation?
Stable kis tau tus mob: Hloov zaus rau 0/1 khoom tuaj yeem txo kev cuam tshuam hauv qee qhov chaw.
Cov kev cai yooj yim: Cov txheej txheem sib txawv ntawm cov ntaub ntawv-encoding tuaj yeem muab tso rau saum FSK rau kev ruaj ntseg thiab kev sib raug zoo.
Tsawg zog: Haum rau cov khoom siv roj teeb ua haujlwm, ntsuas qhov ntau thiab siv hluav taws xob.
4. Lub luag haujlwm ntawm Pawg Tswj Xyuas
Nyob rau sab txais, tus tswj vaj huam sib luagRF modulemloog ntawm tib zaus band. Thaum nws pom thiab txiav txim siab FSK teeb liab, nws paub lub tswb lub cim ID lossis chaw nyob, tom qab ntawd ua rau lub suab nrov hauv zos, ceeb toom network, lossis ceeb toom ntxiv. Yog tias qhov chaw pib ua rau lub tswb nrov ntawm qib sensor, lub vaj huam sib luag tuaj yeem ceeb toom rau cov tswj vaj tse, cov neeg ua haujlwm ruaj ntseg, lossis txawm tias muaj kev saib xyuas xwm txheej ceev.
5. Vim li cas qhov no tseem ceeb
False tswb txo: MCU's threshold-based algorithm pab lim tawm cov pa luam yeeb me me lossis hmoov av.
Scalability: RF tswb tuaj yeem txuas mus rau ib qho kev tswj vaj huam sib luag lossis ntau qhov rov ua haujlwm, ua kom muaj kev ruaj ntseg hauv cov khoom loj.
Customizable Protocols: OEM / ODM cov kev daws teeb meem cia cov tuam txhab tsim cov cim RF yog cov neeg siv khoom xav tau kev ruaj ntseg tshwj xeeb lossis cov qauv kev sib koom ua ke.
Kev xav zaum kawg
Los ntawm seamlessly combiningsensor ntaub ntawv conversion,MCU-based threshold algorithms, thiabRF (FSK) kis tau tus mob, niaj hnub no cov pa taws ceeb toom muab ob qho tib si txhim khu kev qha thiab kev sib txuas ncaj qha wireless. Txawm hais tias koj yog tus thawj tswj hwm vaj tse, tus neeg sib koom ua ke, lossis tsuas yog xav paub txog kev tsim vaj tsev tom qab cov cuab yeej siv kev nyab xeeb niaj hnub no, nkag siab txog cov xwm txheej ntawm cov xwm txheej no - los ntawm cov teeb liab analog rau digital ceeb toom - qhia txog qhov tseem ceeb npaum li cas tsim cov tswb no tiag tiag.
Nyob twj ywmrau ntau qhov tob tob rau hauv RF thev naus laus zis, kev sib koom ua ke IoT, thiab cov kev daws teeb meem kev nyab xeeb tom ntej. Rau cov lus nug txog OEM / ODM muaj peev xwm, lossis kawm seb cov tshuab no tuaj yeem ua raws li koj cov kev xav tau tshwj xeeb,tiv tauj peb pab neeg technicalhnub no.
Post lub sij hawm: Apr-14-2025