Wireless sensor network - SoilNet
Wireless sensor network
Method:
Summary:
Radio frequency used:
2.4 GHz
Radio protocol used:
Jenie from Jennic
Range/Power (line of sight/dBm):
Free sight range: 4km
Router to Router in Field in operation: 600 m
Belowground End device to Router in operation: up to 80 m
Transmission power 19 dBm
Hop modes:
multi-hop, tree-network
GPRS:
yes
Mesh limitations:
number of sensors:300
number of nodes per router:10
Additional information:
Sensor compatibility:
Echo EC-5
Echo 5TE
Temperature
4 digital/ 4 analogue
Data reading frequency:
> 1 sec
Storage of data/backup:
400 measurements
Power consumption:
sleep modus: 5 µA
during sending: 125 mA
mW/packets ?
Reliability:
Years in service: 1.5 years Failure rate instrument (years):
Packet failure (%):
Installation procedure:
Separate power meter, Laptop with GPRS, Display showing sensor measurements
Installation underground possible:
yes
Battery life:
End device calculated: 3 years
Router without solar panel: 3 months
Maintenance required /Ease of maintenance:
battery change each 3 month for the router
Support:
Software:
Web friendly interface: yes
Data base:yes
Scripting language:Postgrsql, Macrolanguage, C-Programming,
Ease of update:
Open source: yes, also free of cost
Cost:
End device: ~150€
What to watch out for:
Problems/Questions:
Links
Projects that used the above equipment:
Other related web sites:
Technical information
Distributors