How good is the resolution on RADAR? Ultrasound? Infrared?
If RADAR has millimeter resolution, great, we’re done. But I think (think, not know) it’s more on the scale of meter resolution. That means, anything under a meter, we won’t even see, or see very clearly. A one meter rock is still enough to knock a standard car out of commission.
Setting something up like stero vision would definitely do the trick, but of course, is insanely difficult. Also, remember, EVERYTHING must be protected, otherwise it may be destroyed by weather, crashes, etc.
He has a point, military scenarios may not allow GPS signals. It would be a great twist to generate some form of interference. While GPS is great, we should start looking at accurate ideas to replace it. Design it like we’re planning on the obvious solutions to fail.
Gyrocompass?? Or how about a chinese compass. Each of those things should point in the same direction no matter what orientation the car is in. All you need to do is calibrate them.
Ok… so how are we going to tell if theres a huge rock in front of us… or a little one? Or etc.
How about laser mapping. Sorry I do not have more time to explain what this is.
Hi,
Digi-Key offers a Digital compass Module-HMR3000 (pp1108)
The wright-up in applications include: heading, (navigation of unmannd vehicles); Avionic compassing, Integration with GPS And Laser Range Finders (surveying applications) + MORE
With up to 3-axis
*Originally posted by George *
**Hi,
Digi-Key offers a Digital compass Module-HMR3000 (pp1108)
The wright-up in applications include: heading, (navigation of unmannd vehicles); Avionic compassing, Integration with GPS And Laser Range Finders (surveying applications) + MORE
With up to 3-axis
I still think GPS+TOPO Map Ref.+Compass+sensors+?
Looking Good!.. Keep thinking!
Geo. **
Hmm…I think we need to build a giant magnetic component onto the car to throw off other car’s compasses. Hey, if we integrate it right, im sure we could demonstrate its nessacity in the car. For example, use it as the main connection between the front of the car and the back of the car, and explain how its nesscary or the car will fall apart without it
My main point of this post was not to show ways of how we can foil other cars (even if it is fun!), but to point out the problem with relying on a compass. Im not saying don’t use it, I’m just saying watch for possible problems.
*Originally posted by Specialagentjim *
**My main point of this post was not to show ways of how we can foil other cars (even if it is fun!), but to point out the problem with relying on a compass. Im not saying don’t use it, I’m just saying watch for possible problems. **
redundancy
Compasses are good. Compasses + Laser Mapping + RADAR + Ultrasound + GPS + … is even better :).
The only problem after that is, picking a weighting system, so if the systems don’t agree, which has the final say. In that, the compass would probably not come first, because of reasons you mentioned.
Yeah we need some redundancy, and the more we got the better, within power constraints. I think a properly filtered array of IR sensors mounted on a revolute-coordinate base, for tracking the sun, coupled with an accurate hardware clock I think there’s some way to keep a good tap on you’re location, and ultrasound for the surrounding area. Anyone have any info are filtering the sun down to a reasonable non-drowning IR level?
you would have to take into consideration cloud cover, and such. i think maybe a IR/UV/Visual combo may actually work pretty well. Mount them all together, you can see sun on all three, you’re bound to see it on at least one thing. i think.
one other really cool thing, but probably not possible, would be to put some star maps in, so you could use those to orient at night, but i think that’s a bit overkill now, and i don’t think it’s needed (the trip is only 10 hours max, right?).
Hmm…I think we need to build a giant magnetic component onto the car to throw off other car’s compasses. Hey, if we integrate it right, im sure we could demonstrate its nessacity in the car. For example, use it as the main connection between the front of the car and the back of the car, and explain how its nesscary or the car will fall apart without it
Errmmm… No one in their right mind will use a regular compass. They will be using gyro-compasses though which is what airline use.
speaking of what airlines use, they must have some sort of navigational backup besides geo-compasses and GPS, either for the auto-pilot or the regular pilot. maybe we can apply the same techniques?
second, if this time of the year is overcast/rainy, count out on trying to sense the sun as a main navigation aid, but keep it in as a “nice to have thing” cause i’m sure DARPA would love something like that (as in, if you have time, and nothing better to do, make it :p).
*Originally posted by Adam Y. *
**Errmmm… No one in their right mind will use a regular compass. They will be using gyro-compasses though which is what airline use. **
Oohhh, is that what they use? That makes sense…I’ve just never herad of one. How do you set it up, orient it to north and let it always self correct itself to how many degrees its off from north?
Oohhh, is that what they use? That makes sense…I’ve just never herad of one. How do you set it up, orient it to north and let it always self correct itself to how many degrees its off from north?
Exactly by mounting the gyroscope in a gymbol it allows it to allwas point in the same direction while its moving. In fact they are also able to determine roll and pitch.
PS the compass is a gyro,
Thats why I gave Supplier, Part #, and page #
this is to give everyone an opportunity to check out components
and develop resources.
