alessandro cunha - rf para sistemas embarcados - esc brazil 2013
TRANSCRIPT
![Page 1: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/1.jpg)
APLICAÇÕES DE RF PARA SISTEMAS EMBARCADOS
![Page 2: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/2.jpg)
APLICAÇÕES DE RF PARA SISTEMAS EMBARCADOS
![Page 3: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/3.jpg)
• Porque sistemas sem fio? • Espectros de frequência no Brasil • Definições e classificações • Redes celulares • Bluetooth • WiFi • WiMAX • ZigBee • Qual a melhor opção? • Kits e módulos de diversos fabricantes • Demonstração prática de alguns kits
AGENDA
![Page 4: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/4.jpg)
Lei Geral de Telecomunicações Art. 163. O uso de radiofreqüência, tendo ou não caráter de exclusividade, dependerá de prévia outorga da Agência, mediante autorização, nos termos da regulamentação. § 1° Autorização de uso de radiofreqüência é o ato administrativo vinculado, associado à concessão, permissão ou autorização para prestação de serviço de telecomunicações, que atribui a interessado, por prazo determinado, o direito de uso de radiofreqüência, nas condições legais e regulamentares. § 2° Independerão de outorga: I - o uso de radiofreqüência por meio de equipamentos de radiação restrita definidos pela Agência;
Uso licenciado
Uso não licenciado
Espectro de RF no Brasil
![Page 5: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/5.jpg)
Connecting Everything Wirelessly
24 billion connected devices anticipated by 2020
Lighting
Automotive
Home automation
Wearables & equipment
Appliances
Alarm & Security
Telehealth Industrial
Electronic Shelf
Remote control toys
Metering / smart grid
![Page 6: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/6.jpg)
1. WPAN - Wireless Personal Area Network
2. WLAN - Wireless Local Area Network
3. WMAN - Wireless Metropolitan Area Network
4. WWAN - Wireless Wide Area Network.
Rede sem fios (também chamada rede wireless) refere-se a um agrupamento de computadores (e outros dispositivos) em rede,
interligados sem o uso de cabos mas sim através de ondas de rádio ou outras formas de ondas eletromagnéticas.
Definição e classificação
![Page 7: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/7.jpg)
Classificação e alcance
![Page 8: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/8.jpg)
Choosing the Right Technology
Technology
<250 kbps
<2 Mbps
20 Mbps
BLE Zigbee RF4CE
Sub-1GHz
Bluetooth
2.4GHz prop
WiFi
Li-I
on
C
oin
C
ell
AA
A
RFID
BLE
Bluetooth
Zigbee
RF4CE
WiFi
10,000+ Range (m)
Tech
no
logy
RF4CE
Zigbee
WiFi
2.4GHz Proprietary
BLE
Bluetooth
Sub-1GHz
10 100
Sub-1GHz
2.4GHz Proprietary
Range Throughput
Typical power source Typical Topology
Star P2P
Zigbee
Prop Sub 1Ghz, Prop 2.4Ghz
WiFi, Bluetooth
RF4CE
Mesh
![Page 9: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/9.jpg)
Proprietary
Industry Standard
Advantages Disadvantages
Tailored to the application
Specialized functions
Potentially smaller software stack
Simpler deployment
Choice of frequency bands
Each OEM’s topology can be different
Less options among suppliers
Inter-Operability among different suppliers
Standardization: customer choice
of suppliers
Ease of network expansion
Larger software stack in most cases
Potentially higher current consumption
Sub 1GHz
2.4GHz
PurePath
Examples
ZigBee Bluetooth
BLE ANT
6LoWPAN Wi-Fi RF4CE
Proprietary vs. Industry Standard
![Page 10: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/10.jpg)
The strength of a signal and resulting range is an outcome of transmit (output) power and receiver sensitivity
• How loud can you yell?
• Higher is better
•Measured in dBm (for example +10dBm)
• How well can you hear?
• Lower is better
• Measured in dBm (for example -93dBm)
Transmitter Power
Receiver Sensitivity
Signal Strength
![Page 11: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/11.jpg)
Grey = Coordinator Coverage Area
Coordinator
End Device
Interferer
TI Wireless Typical competitor
Coordinator
End Device
Interferer
• More Coordinators needed • Temporary interference will result in higher packet loss, more re-transmissions needed
• Less Coordinators needed • Longer links possible • Fewer re-transmissions
Why is RF Selectivity Important ?
Poor selectivity require interfering RF systems to be physically moved away
![Page 12: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/12.jpg)
Global Frequencies; license free (315 MHz - 2.4 GHz)
433 MHz
315/915 MHz
433/868 MHz
415/433 MHz Local ISM bands
426 920 MHZ
433/915 MHz
GLOBAL 2.4 GHz
Japan
Europe
USA
Asia
China
Africa Australia
470 433 779 MHz
433 MHz
![Page 13: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/13.jpg)
Satellite
Macrocell Microcell
Urban In-Building
Picocell
Global
Suburban
Basic Terminal
PDA Terminal
Audio/Visual Terminal
Convivência múltipla
![Page 14: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/14.jpg)
Redes celulares
![Page 15: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/15.jpg)
Frequências em 800 MHz e 900 MHz
Redes celulares
![Page 16: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/16.jpg)
Frequências em 1700 MHz e 1800 MHz
Redes celulares
![Page 17: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/17.jpg)
Frequências em 1900 MHz e 2100 MHz
Redes celulares
![Page 18: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/18.jpg)
Redes celulares
![Page 19: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/19.jpg)
Redes celulares
![Page 20: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/20.jpg)
![Page 21: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/21.jpg)
![Page 22: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/22.jpg)
• Tecnologia destinada a eliminação de cabos
• Criado em 94 pela Ericsson – Harold Bluetooth (Dinamarca e Noruega)
• Curto alcance {1m (0,1mW – Classe 3), 10m (1mW – Classe 2), 100m (100 mW – Classe 1)}
– Lower power exatamente como o WiFi
• Banda de 2.4 GHz (extremamente poluída)
• 1 canal de dados (723.2 Kbps, canal reverso 57.6kbps: ACL)
• Ou 3 canais sícronos de voz (64kbps, SCO)
• Frequency-hopping para múltiplo acesso com um espaçamento de frequência de 1 MHz para até 8 dispositivos por pico-net. – 80 portadoras 80MHz. – Existem colisões quando múltiplas piconets estão próximas.
• É suportado simultaneamente por telecomunicações, PC, eletroeletrônicos, etc. – Hands free phone (ear set) para carro, internet chat/VoIP
![Page 23: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/23.jpg)
Wireless Fidelity (Wireless Ethernet Compatibity Alliance) - 1997
Curtas e Longas Distâncias ( Com Repetidor / Amplificador )
Ondas de Rádio
Taxa de Transferência entre 11 e 108(a+g) Mbps
Alcance de 100 mts (indoor) à 300 mts (outdoor) (Sem Repetidor / Amplicador )
Baixo Custo
PDAs, Celulares, Notebooks, etc
Não necessita de Licença ( Uso doméstico )
802.11a – 5Ghz, 54Mbps
802.11b – 2.4Ghz, 11Mbps
802.11g – 2.4Ghz, 54Mbps
![Page 24: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/24.jpg)
Transmissão de vídeo Full-HD (30 min)
802.11 - comparativo
![Page 25: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/25.jpg)
100 mW 50 mW 1000 mW EIRP power
250 mW
902 928 2400 2484 5150 5250 5350 5725 5825 f/MHz
83.5 MHz 100 MHz 100 MHz 100 MHz
Região
Padrão
Global
802.11 & 802.11b/g
North America (Europe/Japan são diferentes)
802.11a
Canais versus frequências
![Page 26: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/26.jpg)
Canais versus frequências
![Page 27: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/27.jpg)
Convivência com o Bluetooth
![Page 28: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/28.jpg)
Novo padrão(802.16) similar ao 802.11
Outubro de 2001
802.16d Fixo, 802.16e em movimento
Longas Distâncias
Ondas de Rádio
Taxa de Transferência 70Mb
Alcance de até 50 Km
Melhor Performance
PDAs, Celulares, Notebooks, etc
3.5Ghz a 10.5 Ghz
![Page 29: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/29.jpg)
![Page 30: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/30.jpg)
![Page 31: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/31.jpg)
•Global operation in the 2.4GHz frequency band according to IEEE 802.15.4 •Regional operation in the 915Mhz (Americas) and 868Mhz (Europe). •Frequency agile solution operating over 16 channels in the 2.4GHz frequency •Incorporates power saving mechanisms for all device classes •Discovery mechanism with full application confirmation •Pairing mechanism with full application confirmation •Multiple star topology and inter-personal area network (PAN) communication •Various transmission options including broadcast •Security key generation mechanism •Utilizes the industry standard AES-128 security scheme •Supports Alliance standards (public application profiles) or manufacturer specific profiles
![Page 32: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/32.jpg)
![Page 33: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/33.jpg)
![Page 34: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/34.jpg)
![Page 35: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/35.jpg)
![Page 36: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/36.jpg)
![Page 37: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/37.jpg)
![Page 38: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/38.jpg)
![Page 39: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/39.jpg)
![Page 40: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/40.jpg)
![Page 41: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/41.jpg)
![Page 42: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/42.jpg)
![Page 43: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/43.jpg)
![Page 44: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/44.jpg)
![Page 45: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/45.jpg)
![Page 46: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/46.jpg)
![Page 47: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/47.jpg)
![Page 48: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/48.jpg)
![Page 49: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/49.jpg)
![Page 50: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/50.jpg)
![Page 51: Alessandro Cunha - RF Para Sistemas Embarcados - ESC Brazil 2013](https://reader033.vdocuments.net/reader033/viewer/2022052414/55cf9b8a550346d033a677fb/html5/thumbnails/51.jpg)