The IRROmesh System is
a wireless mesh network
data collection system that
automatically records soil
moisture and other sensor data.
This data can be viewed in real time on the WEB or
downloaded in the field. Manually collected data can
also be uploaded to the WEB. This manual provides
detailed instructions for setup and installation.
Planning Your Network Layout
Plan the network layout ahead of time, before
installing any hardware. Determine the areas needed
to monitor soil moisture. Careful selection of mesh
radio Node locations is also critical to establishing good
communication of data. Consequently, there is a dual
requirement of “where the Sensors should be located”
and “where the Nodes should be located.” Determine
the best layout to satisfy both requirements.
Map out your field and indicate all areas that require
monitoring, then identify possible Node locations that
correspond to each area being monitored. Determine if
the range and placement of Nodes will establish a
good communication network. It may be necessary to
add Nodes, with or without sensors, to relay the data
transmission in acceptable path lengths and offset
angles. Mapping out the potential Node/Sensor
locations to verify that distances are acceptable and
potential obstructions are avoided will make the
physical deployment of the hardware much easier.
Avoid installation near areas with potentially strong
radio signal interference. Areas such as airports, cell
towers, etc. can pose significant interference.
For best communication:
A
– The Base Node should be located near the
network’s center. Install the Base higher than the Nodes
reporting directly to it.
(see Figure 1)
B
– Relay/End Nodes, should be at least 10 ft
(3m) above ground and a minimum of 5 ft (1.5m)
above the mature crop canopy to ensure clear-
line-of-sight (CLoS).
(see Figure 1)
The ideal radio
wave pathway is not simply a single straight line
between two points, but rather, a three
dimensional oval-shaped zone. Anything that
protrudes into this zone from the sides will
reduce the radio range. The operating range will also be
reduced if the Nodes are not installed at adequate
heights.
(see Figures 2 & 3)
C
– Relay Nodes form the backbone of the mesh and
‘relay’ data from the Nodes reporting to them towards
the Base. It is important to establish a ‘grid’ layout so
that multiple paths exist between Relay Nodes for data
to flow to the Base. End Nodes only send their data to
a nearby Relay Node or to the Base and should be
Monitoring System
INSTALLATION AND OPERATING INSTRUCTIONS
Solar Powered Wireless
Data Logging System
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