Using the Earth's Magnetic Field for Location· Page 2

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lozz
50.2% (Neutral)
Newbie

11 years ago

#21

Yes, but we could run forums via nice handwritten letters on nice tangible bits of paper.

The OP posted a possible solution to location finding using modern tech means, I'm just thinking of alternative modern tech means that might work underground, practicalities to overcome..sure but that's the way it is.

Lozz.

RJV
50.2% (Neutral)
Newbie

11 years ago

#22

Ditto, the thought of dumbly following an electronic box around a mine is as dismal as it is upon the moor or fell.

lozz
50.2% (Neutral)
Newbie

11 years ago

#23

I agree to a certain extent, mobile phones/GPS should be banned on the moors, especially in adverse weather conditions, moor gorillas wouldn't know how to use them anyways. :(

Lozz.

rufenig
50.2% (Neutral)
Newbie

11 years ago

#24

"lozz" wrote:
I agree to a certain extent, mobile phones/GPS should be banned on the moors, especially in adverse weather conditions, moor gorillas wouldn't know how to use them anyways. 😞 Lozz.

Loads of people are ending up in trouble now relying on mobile devices instead of maps, until the power runs out or water gets in!

lozz
50.2% (Neutral)
Newbie

11 years ago

#25

Yes I understand that but for the foreseeable future mobile devices will remain in use and popular.

Anyways we are digressing from the theme of the OP, maps v modern tech, it's a personal preference in many cases so no point in arguing about that.

Getting back on theme (sort of) an other idea could be to take some electronic "markers" on a UG trip and use them to leave any important text information for any followers involved in the same trip, the markers could be in plastic card form with a high viz coating so as to catch any ones attention.

Lozz.

gNick
50.2% (Neutral)
Newbie

11 years ago

#26

Using a beautifully hand inked Victorian is the ideal way to navigate a mine, unfortunately they are now mostly dead and those not are beyond use except in a very controlled environment.
Finding a useful original is now very difficult as even early post war hand inked Elizabethans are rare to find in good operating condition.
The market is now mostly flooded with machine inked late Elizabethans who are often more a work of supposition and misinterpretation than anything resembling reality and are therefore best used for transportation of the survey equipment (Victorian mahogany and brass of course) or as a footstool.

Don't look so embarrassed, it's a family trait...

rufenig
50.2% (Neutral)
Newbie

11 years ago

#27

Also REAL MEN measure in Chains Furlongs and Fathoms.
We do allow yards in Shropshire.

But non of those Frenchy metres!

:offtopic: AGAIN, I know;(

risy76115
50.2% (Neutral)
Newbie

11 years ago

#28

i have trouble using my sat nav never mind trying this lol give me a good old paper map 🙂 but before long people wont no what one was

Rise from the ashes

lozz
50.2% (Neutral)
Newbie

11 years ago

#29

Yes those frenchy metres, tune your radio to the 131ft 2 & 51/64ths of an inch band.

Lozz.

toadstone
50.2% (Neutral)
Newbie Topic Starter

11 years ago

#30

"lozz" wrote:

What's needed to save you from getting lost underground is a system that automatically records from a known point such as an adit entrance or a level/tunnel entrance via the access shaft the directional and distance information from that point on and plays it back to you when you want to get out of the mine, a bit like a satnav in reverse.

There's always the old tech such as a spray can etc.

Lozz.

I believe this approach to be not far away (not the spray can 😉 ). We are all familiar with these gadgets for joggers that monitor our time/distance parameters, well if you include data derived from a three axis accelerometer and a gyro from a datum point then you're not a gnats whatsit away from achieving it. I personally don't have the algorithm expertise to do this but interestingly at the same conference as the Indoor Atlas, a certain Dan Dodge, a Google Developer Advocate, could hardly contain his excitement as he alluded to a concept along these lines.

Personally I have to say I too prefer the hand drawn map approach, technology is great when it works but is a pain in the arse when it fails.

Peter.

lozz
50.2% (Neutral)
Newbie

11 years ago

#31

"toadstone" wrote:

"lozz" wrote:

What's needed to save you from getting lost underground is a system that automatically records from a known point such as an adit entrance or a level/tunnel entrance via the access shaft the directional and distance information from that point on and plays it back to you when you want to get out of the mine, a bit like a satnav in reverse.

There's always the old tech such as a spray can etc.

Lozz.

I believe this approach to be not far away (not the spray can 😉 ). We are all familiar with these gadgets for joggers that monitor our time/distance parameters, well if you include data derived from a three axis accelerometer and a gyro from a datum point then you're not a gnats whatsit away from achieving it. I personally don't have the algorithm expertise to do this but interestingly at the same conference as the Indoor Atlas, a certain Dan Dodge, a Google Developer Advocate, could hardly contain his excitement as he alluded to a concept along these lines.

Personally I have to say I too prefer the hand drawn map approach, technology is great when it works but is a pain in the arse when it fails.

Peter.

Yeah, go for it, it's sometimes the spin offs from such developments that hits the big time.

Lozz.

ChrisJC
50.2% (Neutral)
Newbie

11 years ago

#32

Presumably the original system only works if you already know the anomalies in the magnetic field, i.e. you've already surveyed the area.

Then it simply confirms you are where you think you are.

Chris.