Re:Battery-free self-powered sensor harvests magnetic energy
by defrost on Monday January 22, 2024 @05:39AM
(#39088092)
Nice to see somebody take the challenge.
Ballpark you're pretty much on the money .. although the standard geophysical unit for measure surface magnetic flux in surveying is the nanotesla .. with 3 axis measurements taken ten times a second at each wingtip and tail of an aircraft travelling 70m/s some 80m above the ground.
Similar but different for "long soak" fixed position magnetotelluric mapping where the field moves about the instrument rather than grid survey where the aircraft moves through the field.
Ballpark you're pretty much on the money .. although the standard geophysical unit for measure surface magnetic flux in surveying is the nanotesla .. with 3 axis measurements taken ten times a second at each wingtip and tail of an aircraft travelling 70m/s some 80m above the ground.
Similar but different for "long soak" fixed position magnetotelluric mapping where the field moves about the instrument rather than grid survey where the aircraft moves through the field.
https://www.ga.gov.au/scientific-topics/disciplines/geophysi...
This is related to the power question - it's all sensors moving through fields. Creating images from all that raw data is another ball of (fun) wax.