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SEMAT Mk2 Prototype Buoy - Overview

The SEMAT Mk2 prototype buoy is the first of the basic system to be deployed in the field.

The SEMAT Mk2 prototype was initially developed as a proof of concept to test the SEMAT system's hardware and software design in the field.  These devices are only designed to be used in calm conditions over a short duration.

The images below illustrate the design of the Mk2 prototype.

Buoy 1 Semat Photo Bouy 2 Semat Project Photo

 

The basic system consists of a gumstix computer on module running a Linux operating system and the eResearch JCU's Sensor Abstraction Layer (SAL) software. Several Odyssey Loggers are connected that sense temperature, light and pressure.  Sensor data is locally buffered and then transmitted via a base station back to the end user.  The system is powered by a 12 volt sealed lead acid battery and is charged by a solar panel. The casing consists of a Diamec IP 68-rated box with pvc pipes as floatation devices.  The system underwent robustness testing prior to its initial deployment at Deception Bay.

The following pages contain specific information regarding the SEMAT prototype's design.