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jerabaul29 / OpenMetBuoy-v2021a

An easy to build, affordable, customizable, open source instrument for oceanographic measurements - with global Iridium coverage
MIT License
37 stars 7 forks source link

smart "freeze in" vertical mount #33

Closed jerabaul29 closed 2 years ago

jerabaul29 commented 2 years ago

@CatherineTaelman if you are ok to send a picture of your smart "freeze in" vertical mount that would be great :) . I think that the idea could be used by both @jvoermans and @tnn77 to avoid problems with being snowed in.

tnn77 commented 2 years ago

Hi, @jerabaul29 . I'm very curious about this. If not a picture, is it possible to share a sketch of this mount?

jerabaul29 commented 2 years ago

Just putting a small hand drawing, from what I understood from @CatherineTaelman , all credits going to her :) (hope it is ok that I upload here a sketch of what you were suggesting? if not, let me know and I will remove it at once).

illustration_PVC_tube_mount

CatherineTaelman commented 2 years ago

Good sketch! It sums up the idea pretty well:) Here are some pictures of the idea, but I haven't had time yet to actually mount the pieces together. Will post more pictures once the assembly is done IMG_20220406_131548_251 IMG_20220406_131629_722 IMG_20220406_131703_614

CatherineTaelman commented 2 years ago

the long bolts going through the PVC pipe and connecting the two metal hooks to the pipe, the 2 small bolts are meant to attach the drifter box to the metal hooks

jerabaul29 commented 2 years ago

Many thanks for the extra pictures, looks really good :) .

When setting these up, I think that a tradeoff question is "how high above the ice" should the box be: the higher above the ice, the less risk for getting buried down by snow (which is really great for iridium communications), but the higher the risk to i) be spotted by bears, ii) start vibrate if there is a lot of wind / the tube is not very stable. Wonder where the optimal value of this tradeoff goes: 5cm above the ice? 10? 15? 20? even more (I think 20cm is a maximum though)?

tnn77 commented 2 years ago

Dear @CatherineTaelman @jerabaul29 thank you so much. this is a nice idea.

I have a similar question as well. I was wondering how much elevation we may gain with this approach. I guess the target height would depend a lot on the expected measurement duration and snow conditions.

jerabaul29 commented 2 years ago

Closing now, will add in a dedicated readme file, feel free to re open if necessary / if you want to discuss further :) .