liubingzsd / gentlenav

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NASA Port: airspeed sensor - pitot tube #79

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago
Feature Description
Airspeed sensor using pitot tube. The hardware used is the MPXV7002 dual port 
5V analog deivce:
http://store.3drobotics.com/products/airspeed-kit-with-mpxv7002dp

What still needs to be decided?
we get a valid airspeed but calibration needs to be worked out. There was talk 
of making this dynamic during flight by the GPS and wind estimation. There are 
two main values, what zero m/s is and the scaler.

What still needs to be done?
The airspeed data gets created by static calibration values but is never used. 
The meat of the code is in NASA\libDCM\airspeedPitot.x. There is also an analog 
pin definition in options.h of ANALOG_AIRSPEED_INPUT_CHANNEL

Misc:
Here is a picture of Tom Pittenger (driver) and Phil Giacalone calibrating the 
airspeed sensor using GPS ground speed while driving in the car.
http://tompittenger.diskstation.me/photo/#Albums/album_55415620646576626f617264/
album_55415620646576626f6172642f4e415341204368616c6c656e6765/album_5541562064657
6626f6172642f4e415341204368616c6c656e67652f4d697363/photo_55415620646576626f6172
642f4e415341204368616c6c656e67652f4d697363_474f5052303032362e4a5047

Original issue reported on code.google.com by magicrub on 30 Aug 2013 at 5:57