Aswin - Location of wind sensor. I would like t...
Location of wind sensor. I would like to use the location (espacially heigt above waterline) of the windsensor(s) for wind calibration. I want wind speed calculated to 10 meter above water level to make it directly comparable to wind speed used in polar. I cannot find this information in the keys reference. I found fromBow and fromCenter, but not fromWaterline or similar. Did I overlook something? If not, how can I add this key to the keys?
8 Replies
You can just make up a path and add it to baseDetas.json
GitHub
FAQ: Frequently Asked Questions
An implementation of a Signal K central server for boats. - SignalK/signalk-server
You could use the same path and just another source. Like if you had just a normal wind sensor outputting regularly up a 10 meter pole
So, there is not something like a committee that approves proposals for new paths? Not even a discussion group where things like this are being discussed? I do find the sensor location/position information very inconsistant in
Changes to the specification (including adding new paths officially) are proposed and discussed here https://github.com/SignalK/specification
GitHub
GitHub - SignalK/specification: Signal K is a JSON-based format for...
Signal K is a JSON-based format for storing and sharing marine data from different sources (e.g. nmea 0183, 2000, seatalk, etc) - SignalK/specification
And there is #specification
fromBow and fromCenter stem from AIS where the position of the GPS/GNSS sensor onboard of a big ship makes a huge difference. i think this is the first time metadata about the position of a wind sensor has come up.....
I think I am the first, that's why I need to write a new plugin. The reason is that I want windspeed corrected for mast movement. And then normalised to 10 meters above sea level as this is the height polars are based on. But sensor location is not only usefull to GPS and AIS or Wind. Also the location of the depth transdurer is needed (and used) to calculate depth of the water. And I saw that for electrical appliences location is also in use. So it is not that weird a thought.
I will use existing paths for the true wind speeed and direction I calculate.
BTW. I am very pleased with the timely respones from both Teppo and Scott