Version 0.95 Released (15/04/07)

We are pleased to inform you about the new release of the GSN software. Here is the list of the major changes:

  • Adding a new documentation, called "the book of GSN".
  • Adding a new wrapper which facilitates communication between virtual sensors running on the same GSN instance.
  • Support for new data sources such as csv, rrd, ...
  • Adding dependency graph to load and unload the virtual sensors.
  • Support for Microsoft SQL Server 2005 Express edition.
  • Improvements on IEEE 1451 related subsystem.
  • Complete separation between GSN and the register service.
  • Adding (prototype) feedback channel support to the system [feedback can be received from the web and/or another (local/remote) virtual sensor].
  • Adding sample Matlab virtual sensor for post processing in Matlab/octave.
  • Moving the web interface completely to AJAX and Google Map.
  • Adding several JUnit tests on some of the core classes of the GSN.
  • Many performance improvements and bug fixes.

Source release of GSN Configurator (21/11/2006)

The source for the GSN Configurator has been committed to the sourceforge.net svn repository ! This marks its transition from an experimental prototype to a more stable tool. It will undergo some refactoring since its integration in the main branch will allow us to control gsn more easily.

Nokia donated hardware to the project (11/06)

SensorPlanet project in Nokia donated several hardware to GSN project such as two N80 phones and a N770 Tablet Internet. We added these devices to the list of candidate terminals for monitoring and quering the sensor networks.

GSN at VLDB 2006 in Seoul (12-15/09/06)

The 32nd International Conference on Very Large Data Bases will be held in Seoul, Korea, between September 12 and September 15, 2006. A live demonstration of GSN will be available under the title: "A Middleware for Fast and Flexible Sensor Network Deployment". Join us to start some interesting discussion !

IEEE 1451 is now implemented (SVN) (30/8/06)

The IEEE 1451 or "A Standard for Smart Transducer Interface for Sensors and Actuators" is a set of standards for smart sensors that will make it easier and cheaper to deploy a wide variety of sensors. The standard defines the smart sensor as simply "a device that handles its own acquisition and conversion of data into a calibrated result in the units of the physical attribute being measured". Currently (2006 Sep.), IEEE 1451.1 and IEEE 1451.4 have become published standards. In GSN we have implemented the 1451.4 standard which is "A standard allowing analog transducers to communicate digital information for the purposes of self-identification and configuration". The standard make the sensor network deployment even simpler by delegating the configuration and identification tasks of the sensor network deployments to the smart nodes hence making the zero-configuration and zero-programming possible. Detailed information about the IEEE 1451 standard can be found here.

This page presents some of the performance tests we performed using GSN 0.70. For getting the detailed description of the results please refer to the scientific publications which are presented in the News page.