The middleware, profile to manage the communication of
sensors on board is stored as a class file for each sensor.
Therefore, define a profile for each sensor, can respond to
data reading of diverse sensor. In addition, OTA profile.txt is a
rewritable profile from the web interface, individually access
each of the communication node from the web server, it is
possible to change the settings, including the sampling rate.
The web-UI to be used to view the sensor data are implemented
by Ruby on Rails and MySQL. It shows the architecture of
communication nodes and the web interface in Fig.4.