On 15 Nov 2020 16:09:25 +0000 (GMT), Theo
wrote:

snip

Gas is tricky - it's hard to measure without interposing something in the
flow (or maybe Doppler ultrasound?). That means you're left trying to read
the exist meter optically - does it give a pulse or something a sensor could
be attached to? Apparently it's illegal to strap on sensors, but a
non-contact way to read it might be feasible - worst case a camera pointed
at the digits. It would likely need to be tailored to whatever meter you
have.

Might be a nice usage for the OpenANLP / OpenCV project? ;-)

(Should be) Easy to put a 'Does the value of the reading make sense'
traps in the code to mitigate against bogus readings creating spurious
data / outliers?


Cheers, T i m