The main idea behind the development of such facility was lack of more widely available test equipment and appropriate space, where low cost FSO systems in development could be tested.
Following our open-source approach, experimental designs and detailed hardware and software documentation will be available for reproduction by other research groups and hackspaces.
|Ventilation||Fan with airfow rate 3000 m3/h, all air in the tunnel is changed in less than 2 min.|
|Measurement sensor||Real-time monitoring of visibility, temperature, humidity and pressure on multiple points in the tunnel.|
|Data collection||Websocket protocol, real time monitoring.|
All the experiments are performed in a 50m corridor, 2m high and 1m wide, constructed using clear PVC foil draped over rigid, wooden frame inside a dark hall. Tunnel can be entered trough double opening in foil located on both sides and in the middle. Up to three FSO links can bi set up parallel along the tunnel, each of them mounted on a railing, fixed in the concrete block, eliminating misalignment due to unstable mounting.
To simulate fog conditions fog is produced using the fog machine and uniformly distributed down the corridor using adequate ventilation. So far experiments indicate that using the fog machine results in realistic fog conditions, however dry ice and a signal flares are planned for use in the near future as well. Further systems, such as heating chambers, vibration measuring system and scintillation simulation experiment are currently under the development and should be installed in the facility soon.
The leading objective of the project is to provide comprehensive, well rounded set of experiments and tests, suficient to assess the performance of the FSO system in various, naturally occurring conditions. We aim to introduce alternative test methods and procedures, providing good-enough results for development purposes at afordable price and made them freely available to the research community.
Experiments focus on two aspects: assessment and analysis of the system and its components as such and performance evaluation under exposure to various stress factors.