Yog lawm, ntau lub Bluetooth modules ua haujlwm ua keyeej tuaj yeem ua rau muaj kev cuam tshuam, tab sis qhov no tsis tau txhais hais tias lawv tsis tuaj yeem sib koom ua ke. Niaj hnub nimno Bluetooth technology tau tsim - nyob rau hauv cov txheej txheem kom ntse "tso" qhov kev cuam tshuam no, ua kom muaj kev ruaj ntseg hauv ntau qhov xwm txheej.
Nov yog cov laj thawj rau kev cuam tshuam thiab cov ntsiab lus tseem ceeb hauv qab li cas lawv "coexist peace":
Vim li cas kev cuam tshuam tshwm sim?
Muaj neeg coob coob Band:Txhua Bluetooth modules ua haujlwm hauv lub2.4GHz ISM (Industrial, Scientific, thiab Medical) pej xeem band. Cov band no tsis yog siv los ntawm Bluetooth xwb; Wi-Fi, Zigbee, nas wireless, thiab txawm tias microwaves tau sib tw rau nws.
Co-channel thiab Adjacent-channel Tsis sib haum xeeb:Thaum ntau lub Bluetooth modules nyob ze heev thiab tshwm sim los xa mus rau tib lossis nyob ib sab zaus raws, teeb liab sib tsoo (co-channel cuam tshuam) tshwm sim. Qhov no ua rau cov pob ntawv poob, kev sib txuas lus luv luv, lossis kev sib txuas tsis tu ncua.
Bluetooth modules "dodge" cuam tshuam li cas?
Txhawm rau zam "kev sib tsoo," Bluetooth thev naus laus zis siv cov txheej txheem hauv qab no los tiv thaiv- cuam tshuam cov txheej txheem:
Zaus-Hopping Spread Spectrum (FHSS) - Cov Tub Rog Tub Rog
Bluetooth tsis nyob ruaj rau ntawm ib qho channel xws li Wi-Fi. Nws faib cov 2.4GHz band rau hauv 79 (Classic Bluetooth) lossis 40 (BLE) txoj kab nqaim. Thaum sib txuas lus, Bluetooth modulehops ntawm cov channel no ntawm qhov ceev ntawm 1600 zaug ib ob.
Analogy:Wi-Fi zoo li lub tsheb loj tsav tsheb nyob rau hauv txoj kev ruaj khov, thaum Bluetooth zoo li lub maus taus frantically weaving ntawm kaum ob ntawm txoj kab nqaim. Txawm hais tias ob lub maus taus qee zaus "pob" rau ib leeg, lawv hloov mus rau txoj kab sib txawv ntawm qhov thib ob tom ntej, ua kom kev sib txuas lus tag nrho.
Adaptive Frequency Hopping (AFH) - Kev Tiv Thaiv Ntse
Taw qhia hauv Bluetooth version 1.2, qhov no yog qhov tseem ceeb thev naus laus zis. Bluetooth modules muaj peev xwm "kev paub txog ib puag ncig". Lawv tuaj yeem kuaj pom cov channel twg yog nyob ntawm Wi-Fi lossis lwm qhov chaw cuam tshuam muaj zog, tshem tawm cov "cov kab tsis zoo" los ntawm cov npe hopping, thiab tsuas yog dhia ntawm cov channel huv si.
Piconet Kev Coexistence
Sib txawv Bluetooth tes hauj lwm (piconets) muaj sib txawv hopping sequences. Qhov no txhais tau hais tias txawm tias koj muaj 10 cov khoom siv Bluetooth ua haujlwm nyob rau hauv tib chav, lawv cov hopping rhythms txawv, hauv paus yuav txo tau qhov tshwm sim ntawm qhov ntev -kev cuam tshuam kev cuam tshuam.
Yuav ua li cas txo kev cuam tshuam hauv kev siv tswv yim?
Txawm hais tias cov thev naus laus zis no, kev cuam tshuam tseem tuaj yeem tshwm sim nyob rau hauv siab -ntaus kev lag luam lossis kev lag luam xwm txheej (piv txwv li, ntau pua Bluetooth beacons xa mus ua ke). Koj tuaj yeem siv cov kev ntsuas hauv qab no los ua kom zoo dua:
Kev cais lub cev:Sim ua kom qhov kev ncua deb ntawm Bluetooth modules thiab zam cov khoom siv hlau loj (hlau ua rau muaj kev cuam tshuam loj heev thiab txo cov teeb liab Bluetooth).
Txo kev xa hluav taws xob:Yog tias qhov kev sib txuas lus xav tau tsis siab, koj tuaj yeem txo qis kev sib kis ntawm Bluetooth module ntawm AT cov lus txib. Qhov no tsis tsuas yog txuag lub zog tab sis kuj txo cov teeb liab "kev ua qias tuaj" ntau rau cov modules nyob ib puag ncig.
Tsis txhob Wi-Fi cuam tshuam:Yog tias Wi-Fi nyob hauv koj qhov xwm txheej, sim kho Wi-Fi router mus rau 5GHz band, lossis kho nws cov 2.4GHz raws rau 1, 6, lossis 11, tawm hauv qhov chaw huv si ntau dua rau Bluetooth.
Xaiv Cov Module Tshiab:Ua ntej cov modules uas txhawb nqaBluetooth 5.0 thiab siab dua. Cov ntawv tshiab tshiab muaj kev txhim kho tseem ceeb hauv Channel Xaiv Algorithms (CSA) thiab tiv thaiv - cuam tshuam kev ua haujlwm.
