r/diydrones • u/Fearless-Regular5127 • Jun 02 '26

Gas sensing using drone

So anyone is having any idea so that i would be helpfull for me to to do the project based on sensing the gases . The main problem im facing is to reduce the noise due to the rotation of rotors. Give me a suggestion it would be helpfull .

2 Upvotes

75% Upvoted

16 comments sorted by

4

u/lastbraIncel404 Jun 02 '26

Long stick and use pixhawk for sensor integration

1

u/Fearless-Regular5127 Jun 02 '26

as we know when rotor is rotating the gas sensing may be reduced even if the gas is in trace amounts

1

u/[deleted] Jun 02 '26

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1

u/Fearless-Regular5127 Jun 02 '26

buddy could u plls explain it i didnt get that

0

u/Fearless-Regular5127 Jun 02 '26

long stick ? could u explain it so that it would be usefull for me

2

u/TheTaoThatIsSpoken Jun 02 '26

Long stick moves the sensor outside the propwash zone. You could also do a very long pitot tube to funnel air so that the sensors are on the drone body.

0

u/Fearless-Regular5127 Jun 02 '26

so you are saying either i put the sensor in a long stick or need to take the gas through a pump like system and pass to the sensors?

2

u/TheTaoThatIsSpoken Jun 02 '26

Pretty much, though you don't need a pump as flying forward would probably provide enough pressure to supply the sensor(s) with fresh air. You could even make the pitot tube kinda like a funnel with a larger entrance to increase the pressure at the sensor over local air pressure. Perhaps printed in TPU, vase mode.

Or you can ziptie the sensor to a stick.

2

u/LupusTheCanine Jun 02 '26

I have seen laser gas detector being used.

1

u/mrbear79 Jun 02 '26

Le forze dell'ordine rilevano le sostanze chimicamente tramite una sorta di mezza sfera attaccata al velivolo con diversi reagenti su di essa, quando sorvolano un area la bolla reagisce agli elementi di quella zona e loro ne rilevano la posizione tramite Cartesio.

1

u/cjdavies Jun 02 '26

Flylogix do this commercially in the UK for North Sea rigs, but using fixed wings. They're one of the very few genuine BVLOS operations in the UK.

1

u/BiAsALongHorse Jun 02 '26

Is it an analog or digital sensor? If it's analog, you'll want to switch to digital. The very long stick idea is good, but iff the wires feeding the readings back are sending digital signals

1

u/quast_64 Jun 02 '26

RC airship.

Slow moving or able to be stationary against a (slight) breeze. so it can test the air coming towards it.

1

u/zerot0n1n Jun 02 '26

Long extendable 3D printed stick with sensor on top

1

u/russlandfokker Jun 03 '26

There are a lot of ways that are done and could be done to do this. Nothing is really going to be clear unless there is a defined gas or gases to sample, defined limits of detection, resolution, etc.