OSDT Android Sensor Pod Reaches Significant Development Milestone
The OSDT Initiative small business partner Erigo Tech (www.erigotech.com) completed another
series of end-to-end performance tests of the OSDT Android sensor pod. These tests exercised
the FreeWave wireless radios in the following configuration:
OSDT on DROID phone ==WiFi==> NETGEAR router ==wired==> FreeWave “buoy” radio
==900MHz==> FreeWave “shore” radio ==wired==> OSDT on Mac mini on Erigo LAN
The system was automatically configured using a master XML file designed for both system initialization
and dynamic control. A number of robustness tests were performed, including the following:
· unplug power on the shore radio; wait more than a minute; apply power again
· unplug power on the buoy radio; wait more than a minute; apply power again
· unplug power from buoy-side NETGEAR router; wait more than a minute; apply power again
· walk the DROID out of WiFi range; wait for more than a minute; walk back into WiFi range
· if the DROID is unplugged from USB and then the phone goes to sleep, then wake it back up
Thus far, we have been impressed by the robustness of the system: In all tests the system came back fine
and started sending data. For the next phase we will be working with realistic data streams from the ocean
sensors, e.g., PCO2, pH, pressure, temp, etc.