Meeting Notes - MICS Tinynodes Meeting EPFL - 27. September 2006

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Sensorscope:

System Information:
- building on Tinynodes and TOS-2.x
- custom hardware (weather station)
- custom backend (database, web frontend etc.)
- dutycycle about 10%

- they have still problems with the TinyNodes
- no multi-hop routing support working
- relatively low sampling rate (once per 30 second)
- there seems some possibility to use ideas from Andreas Meiers MAC (developed for Tmotes at ETHZ)
- deployment on glacier planned for Feb 2007 on the Pleine-Morte
- possibility to engage engineers from HEX Fribourg (Martin Vetterli)
- the dependency on HDF wrt. TinyOS 2.0 seems uncritical
- but there is a potential long term issue with TinyOS 2.0 in terms of adoption
- also Guillermo will be available till 9/2006 only, Gunnar Schäfer will replace
- for time synchronization the CSEM approach might be applicable

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CommonSense/WaterSense:

System Information:
- building on Tinynodes and TOS-1.x
- sharing backend technology with with Sensorscope
- dutycycle about 10%

- initially moved from Mica 2 to TinyNodes
- took over DB interface from SensorScope
- plan to go for TinyOS 2.0 and start to share code with SensorScope
- Philippe Cudre Mauroux (group Aberer) currently builds DB interface (but no use of GSN!)
- are struggling with a stability problem (debugging, testing) with a single hop data collection application
- want to move to a multihop system ASAP
- deployment in india using mica2 and TOS-1.x
- want to deploy Feb/Mar 2007

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PermaSense:

System Information:
- building on Tinynodes and TOS-1.x
- no software/protocol exchange with other projects
- custom hardware built in cooperation with geography partners
- custom backend building on Shockfish GPRS solution
- protocol dutycycle about 0.5% (2x500msec per 30 mins)

- a number of functions realized: 
  GPRS uplink, mutlihop routing, data collection, data compression, time sync, TinyNode modification
- all in TinyOS 1.0, migration not envisaged due to time constraints
- planned deployment max. 50 nodes (Oct 2006 Jungfraujoch, later in the year 2006 Chamonix/Aiguille du Midi)
- will continue deploying in 2007 on a second generation system 
- Lithium Thionyl batteries rated 7.3Ah
- no code distribution (update capability)
- several hours testing of sync algorithms
- power measurements on system

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Ozone Monitoring

System Information:
- Tinynodes and TOS-1.x
- 1 packet per 15 min
- mostly standard system, have only custom sensor

- would like to have multihop, mutlisink routing
- focus on sensor calibration, but specific for ozone sensors
- TinyOS 1 at the moment
- but interesting to take over SensorScope developments/technology
- low duty cycle
- solar panel and packaging


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Discussion:

- Shockfish would be able to provide soon a low power, multihop, multisink algorithm
- Roger Meier will circulate information
- Smartpark has little potential for synergy, since completely different algorithmic problems
- FreeBox is company who can provide good casing solutions
- calibration is also done in the env. Monitoring groups (Marc Parlange)
- Shockfish identifies the typical phases in development (modify board, initial deployment, production of custom boards, etc.)


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Action items:

- SensorScope provides access to the code base
- Pollution Monitoring checks how to adopt the SensorScope solution
- PermaSense evaluates first deployment and reconsiders strategy
- Jan opens a TinyNodes discussion space on the WG 2 WIKI
- Jan organizes a developer conference in November

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Tentative Timeline:

Nov 2006
- stable release of TinyOS 2.0
- CommonSense migrates to Sensorscope
- first Permasense deployment and experiences

Feb 2007
- SensorScope deployment on Glacier
- CommonSense deployment in India

Apr 2007
- SesnorScope solved time snych issues

Jul 2007
- 2nd generation PermaSense solution
- first Ozone monitoring soltuion including ozone sensors/routing/packaging