Nui nā hihia o ka hoʻopili ʻana i nā polokalamu Bluetooth he nui i ke ola o kēlā me kēia lā. Aia ma lalo kahi hoʻolauna i ka ʻike o nā pilina lehulehu no kāu kuhikuhi.
Pili hoʻokahi Bluetooth maʻamau
ʻO ka pilina Bluetooth hoʻokahi, ʻike ʻia hoʻi ʻo ka pili point-to-point, ʻo ia ka mea maʻamau maʻamau o ka pili ʻana o Bluetooth, e like me nā kelepona paʻalima<-> kaʻa ma ka papa Bluetooth. E like me ka hapa nui o nā protocols kamaʻilio, ua māhele ʻia ke kamaʻilio Bluetooth RF i nā mea haku/kauā, ʻo ia hoʻi ʻo Master/Slave (ʻike ʻia ʻo HCI Master/HCI Slave). Hiki iā mākou ke hoʻomaopopo i nā mea HCI Master ma ke ʻano he "RF Clock providers", a ʻo ke kamaʻilio uila 2.4G ma waena o Master/Slave i ka lewa pono e hoʻokumu ʻia ma ka Clock i hāʻawi ʻia e Master.
ʻO ke ʻano hoʻohui hui nui Bluetooth
Nui nā ala e hiki ai ke hoʻokō i ka pili ʻana o Bluetooth, a ʻo kēia ka hoʻolauna ʻana iā 3.
1: Point-to-Nui Point
He mea maʻamau kēia hiʻohiʻona (e like me ka mea paʻi BT826 module), kahi e hiki ai i kahi module ke hoʻohui i 7 kelepona paʻa (7 ACL loulou). Ma ka Point to Multi Point scenario, pono e hoʻololi ikaika ka mea Point (BT826) mai HCI-Role i HCI-Master. Ma hope o ka hoʻololi maikaʻi ʻana, hāʻawi ka hāmeʻa Point i kahi uaki Baseband RF i nā polokalamu Multi Point ʻē aʻe e hōʻoia i ka ʻokoʻa o ka uaki. Inā hāʻule ka hoʻololi ʻana, komo ia i ka Scatternet scenario (scenario b in the following figure)
2: Scatternet (c ma ke kiʻi ma luna)
Inā paʻakikī ka hiʻohiʻona pili nui, pono nā nodes he nui ma waena e hoʻokuʻu. No kēia mau node relay, pono lākou e lawelawe ma ke ʻano he HCI Master/Slave (e like me ka hōʻike ʻana ma ka ʻulaʻula ma ka kiʻi ma luna).
I ka Scatternet scenario, ma muli o ka loaʻa ʻana o nā HCI Masters he nui, aia paha he nui nā mea hāʻawi uaki RF, e hopena i nā pili pūnaewele paʻa ʻole a me ka hiki ʻole ke hoʻopilikia.
Nānā: Ma nā hiʻohiʻona hoʻohana pono, pono e pale ʻia ka noho ʻana o Scatternet e like me ka hiki
BLE MESH
ʻO BLE Mesh i kēia manawa ka hopena i hoʻohana nui ʻia i ka pūnaewele Bluetooth (e like me ke kahua o nā home akamai)
Hiki i ka mesh networking ke hoʻokō i ke kamaʻilio pili ʻana ma waena o nā nodes he nui, ʻo ia ke ʻano o ka hoʻolaha pūnaewele me nā kikoʻī kikoʻī he nui e hiki ke nīnau pololei ʻia.
3: Manaʻo hoʻohui lehulehu
Paipai mākou i ka mana haʻahaʻa (BLE) 5.2 module e kākoʻo ana i nā module Bluetooth papa 1. Hoʻohana ka FSC-BT671C i ka chipset Silicon Labs EFR32BG21, me kahi microcontroller 32-bit 80 MHz ARM Cortex-M33 hiki ke hāʻawi i ka mana mana kiʻekiʻe o 10dBm. Hiki ke hoʻohana ʻia no nā noi pūnaewele Bluetooth Mesh a hoʻohana nui ʻia i nā kahua e like me ka hoʻomalu kukui a me nā ʻōnaehana home akamai.
Related huahana
Nā hiʻohiʻona FSC-BT671C:
- Mana Mana Haahaa Bluetooth (BLE) 5.2
- Hoʻopili ʻia ka MCU Bluetooth protocol stack
- Papa 1 (ka mana hōʻailona a hiki i+10dBm)
- Bluetooth BLE mesh pūnaewele
- ʻO 115.2Kbps ka nui o ka UART baud, hiki iā ia ke kākoʻo iā 1200bps a 230.4Kbps.
- UART, I2C, SPI, 12 bit ADC (1Msps) pilina pili ikepili
- Nui liʻiliʻi: 10mm * 11.9mm * 1.8mm
- Hāʻawi i ka firmware maʻamau
- Kākoʻo ma luna o ka lewa (OTA) firmware hou
- Ka wela hana: -40 ° C~105 ° C
hōʻuluʻulu manaʻo
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