Lub zog siv hluav taws xob ntawm Bluetooth Tsawg Zog (BLE) tsis yog vim yog ib qho kev ua khawv koob nkaus xwb, tab sis yog kev sib xyaw ua ke ntawm kev xaiv tsim ntse uas txawv ntawm Classic Bluetooth.
Nov yog qhov kev sib cais ntawm vim li cas BLE thiaj li muaj hwj chim- ua haujlwm tau zoo, los ntawm cov ntsiab lus tseem ceeb tshaj plaws mus rau cov ntsiab lus zoo dua.
Lub hauv paus ntsiab lus tseem ceeb: "Hais lus nrawm, tsaug zog sai"
Xav txog ob tug neeg sib txuas lus:
Classic Bluetoothzoo li muaj ibkev sib tham tsis tu ncua. Koj ob leeg yuav tsum nyob twj ywm mloog thiab hais lus kom tswj tau qhov ntws, uas siv lub zog ntau.
BLEyog zoo lisib pauv ceev, ua ntej- npaj cov ntawv nyeem. Koj qhib koj lub xov tooj, xa / tau txais cov lus nyob rau hauv ib feem ntawm ib tug thib ob, thiab tam sim ntawd tig koj lub xov tooj tawm dua kom txuag tau roj teeb.
Qhov no "pw-thawj" lub tswv yim yog lub plawv ntawm BLE qhov kev ua tau zoo.
Cov Tswv Yim Tseem Ceeb rau Kev Siv Hluav Taws Xob
1. Lub voj voog ua haujlwm qis
Qhov no yog qhov tseem ceeb tshaj plaws.Lub luag haujlwm voj vooghais txog qhov piv ntawm lub sij hawm xov tooj cua active (hloov los yog tau txais) rau lub sij hawm nws tsaug zog.
BLE yog tsim los kom muaj ib qhotsis tshua muaj dej num voj voog. Lub xov tooj cua feem ntau yog nyob rau hauv lub xeev tsaug zog, noj minuscule npaum li cas ntawm lub hwj chim (feem ntau nyob rau hauv ntau yam.microamps lossis nanoamps).
Nws tsuas yog "sawv" rau luv luv, tsis tshua muaj tshwm sim los xa lossis tshawb xyuas cov ntaub ntawv. Ib qho kev sib txuas ua ke tuaj yeem luv li ob peb puas microseconds.
2. Yooj yim raws tu qauv pawg
Lub "hlwb" tom qab xov tooj cua tsis tas yuav ua haujlwm hnyav.
BLE siv ntau heevyooj yim thiab leaner raws tu qauv pawgtshaj Classic Bluetooth. Nws tau tsim los ntawm hauv av mus rau kev hloov pauv cov ntaub ntawv me me.
Qhov no txhais tau tias tus processor tuaj yeem yooj yim dua, khiav ntawm lub moos qis dua, thiab ua tiav nws cov dej num (xws li ntim cov ntaub ntawv) sai dua, tso cai rau nws rov qab mus pw sai dua.
3. Kev sib txuas ceev ceev
BLE txo qis lub sijhawm xav tau los tsim kev sib txuas thiab hloov cov ntaub ntawv.
BLE ntaus ntawv tuaj yeem tshaj tawm nws qhov muaj nyob, tsim kev sib txuas, xa cov ntaub ntawv, thiab txiav tawm hauvtsuas yog ob peb milliseconds.
Classic Bluetooth tuaj yeem nqavib nas thislos ua tib yam txheej txheem, thaum lub sij hawm uas ob lub xov tooj cua muaj zog thiab siv lub zog loj.
4. Advanced Advertising (Tshaj Tawm) hom
Qhov no yog ib tug killer feature rau ultra-low- zog sensors. BLE ntaus ntawv tsis tas yuav tsim kev sib txuas xa cov ntaub ntawv.
Nws tuaj yeem sawv ib ntus, tshaj tawm cov ntaub ntawv me me (xws li kev nyeem ntawv kub lossis "Kuv nyob ntawm no" beacon), thiab rov qab mus pw.
Ib qho khoom siv nyob ze (zoo li lub xov tooj smartphone) tuaj yeem mloog cov kev tshaj tawm no yam tsis tau tsim lub zog- kev sib txuas hnyav. Qhov no zoo meej rau ib qho - cov ntaub ntawv.
5. Cov kev sib txuas yooj yim
Thaum muaj kev sib txuas tau tsim, nws tau zoo heev rau lub zog.
Parameters zoo li covKev sib txuas sib txuas(lub sij hawm ntawm wake{0}}ups) thiabqhev Latency(ntau npaum li cas sawv- ib lub cuab yeej tuaj yeem hla yog tias nws tsis muaj ntaub ntawv) tuaj yeem hloov kho.
Lub ntsuas lub plawv dhia yuav siv lub sijhawm nrawm (piv txwv li, 20ms).
Lub xauv ntse uas tsuas yog xav tau qhib ib zaug ib hnub tuaj yeem siv lub sijhawm qeeb heev (xws li 1 thib ob lossis ntau dua), pw tsaug zog rau 99.9% ntawm lub sijhawm.
6. Txwv cov ntaub ntawv hla dhau
Qhov no yog kev lag luam tawm - tawm. BLE yog optimized raucov ntaub ntawv me me.
Nws yog qhov zoo tshaj plaws rau kev xa cov lus txib xws li "on / off," lossis sensor nyeem zoo li "72℃F, 50% av noo."
Nws yogtsis yogtsim los txuas ntxiv, siab -bandwidth streaming zoo li lub suab (uas yog qhov Classic Bluetooth thiab BLE Audio / LE Audio yog rau). Los ntawm tsis txhawb qhov no hauv nws cov qauv tsim, BLE zam cov nqi hluav taws xob siab cuam tshuam nrog nws.
Ib qho piv txwv: BLE Temperature Sensor
Pw tsaug zog:Lub sensor pw tsaug zog rau 10 vib nas this, siv yuav luag tsis muaj zog.
Luv Wake-up:Nws internal timer wakes nws.
Ntsuas & Npaj:Nws yuav siv sij hawm nyeem ntawv kub thiab ntim rau hauv ib pob ntawv me me.
Kev xa tawm:Nws siv nws lub xov tooj cua rau ~ 1 millisecond los tshaj tawm cov pob ntawv no.
Rov qab mus pw tsaug zog:Lub xov tooj cua thiab processor tam sim ntawd kaw, rov qab mus pw tsaug zog rau lwm 10 vib nas this.
Hauv lub voj voog no, cov cuab yeej siv tau tsawg dua 0.01% ntawm lub sijhawm.
Kev sib piv ntawm ib nrais muag: BLE vs. Classic Bluetooth
| Feature | Bluetooth Tsawg Zog (BLE) | Classic Bluetooth (piv txwv li, rau Suab) |
|---|---|---|
| Lub Hom Phiaj Tseem Ceeb | Xa cov ntaub ntawv me me, cuam tshuam nrog lub zog tsawg. | Nruam cov ntaub ntawv streaming (suab, hloov ntaub ntawv). |
| Kev siv fais fab | Tsawg heev(Lub hli mus rau xyoo ntawm lub npib cell roj teeb) | Kwv tij siab(Xeem mus rau hnub ntawm lub roj teeb rov qab) |
| Lub luag hauj lwm Cycle | Tsawg heev (<1%) | Siab heev (Yuav ua tau 100% thaum siv nquag) |
| Peak Tam sim no | ~ 10-20 mA | ~ 20-40 mA (los yog ntau tshaj) |
| Kev sib txuas ceev | Ceev heev (milliseconds) | Slow (Yuav siv sij hawm vib nas this) |
| Cov ntaub ntawv dhau los | Tsawg (Tsom rau cov lus luv luv) | High (Tsim rau cov ntaub ntawv loj loj) |
Xaus
BLE ua tiav nws lub zog zoo kawg nkaus los ntawm kev uatub nkeeg los ntawm kev tsim. Nws ua qhov tseem ceeb ntawm kev pw tsaug zog tshaj txhua yam, siv kev sib txuas ntawm xov tooj cua ceev, lub hlwb yooj yim, thiab cov qauv kev sib txuas lus ntse kom ua tiav nws txoj haujlwm hauv lub sijhawm luv tshaj plaws ua ntej rov qab mus rau nws lub xeev tseem ceeb: tob, lub zog -txuag pw tsaug zog.
