Libelium Waspmote, Техническое руководство

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LoRa
National wide networks targeting internet of things such as critical infrastructure, confidential personal data or critical functions
for the society has a special need for secure communication. This has been solved by several layer of encryption.
Protocol: LoRaWAN 1.0, Class A
LoRaWAN-ready
Frequency:
• LoRaWAN 868/433 modules: 868 MHz and 433 MHz ISM bands
• LoRaWAN 900 module: 900-930 MHz ISM band
TX power:
• LoRaWAN 868/433 modules: up to +14 dBm
• LoRaWAN 900 module: up to +18.5 dBm
Sensitivity:
down to -136 dBm
Range:
>15 km at suburban and >5 km at urban area. Typically, each base station
covers some km. Check the LoRaWAN Network in your area.
Chipset consumption:
• LoRaWAN 868/433 modules: 38.9 mA
• LoRaWAN 900 module: 124.4 mA
Radio data rate:
• LoRaWAN 868/433 modules: from 250 to 5470 bps
• LoRaWAN 900 module: from 250 to 12500 bps
Receiver: purchase your own base station or use networks from LoRaWAN operators
All the information about their programming and operation can be found in the LoRaWAN Networking Guide available at
Development section of Libelium website.
10. LoRa
• Protocol: Own, developed at Libelium. Not compatible with LoRaWAN.
•
Model:
Semtech SX1272
• Frequencies available: 860-1000 MHz, fits both 868 (Europe) and 915 MHz (USA) ISM bands
•
Max TX power:
14 dBm
• Sensitivity: -137 dBm
• Range:
- Line of Sight: 21+ km / 13.4+ miles (LoS and Fresnel zone clearance)
- Non Line of Sight: 2+ km / 1.2+ miles (nLoS going through buildings, urban
environment)
• Antenna:
- 868 / 915 MHz: 0 / 4.5 dBi
- Connector: RPSMA
• Encryption: AES 128/192/256b (performed by Waspmote API)
•
Control Signal:
RSSI
• Topology: Star
•
Receiver/Central node:
Meshlium LoRa, special Gateway LoRa (SPI) or another Waspmote or Plug & Sense! unit
Note: The XBee 868 MHz module is provided with 4.5dBi antenna, which enables maximum range.
This is the radio with the best range performance, thanks to the excellent receiver sensitivity that the LoRa™ technology offers.
Besides, Libelium developed a library which enables addressable, reliable and robust communications with ACK, re-tries or
time-outs strategies.
The user can set any frequency in the 868 and 900MHz bands, with pre-defined channels. The use of this module is allowed in
virtually any country.
Figure: LoRaWAN 868 module
Figure: LoRa module