Distance Measurement Chips

Hi there,

I am going to start a research on finding chips for distance measurement.

Before I start, I wanted to have your ideas as to have an idea upfront for what to look for.

I would appreciate any input.

The requirement is +/-1mm sensitivity in 300cm distance.

*I have info for Sharp modules but the distance and the sensitivity are not good.

Thanks in advance.

Hello, Sayzer

Two chip numbers : SN28784 and TL851 ...

That's all I can do for you here ... you're really asking too much !!!

I saw you were E.T. Manager ... are you one of them ???

Cheese !!!

Alain

Hi Alain,

These days, I have been really strange (even to myself).

I guess I have not been able to focus on things precisely recently.

This may be a cause of me engaged to be married. I now have a fiancé.

BTW;

This schematic should be what you are talking about.
http://img4.picsplace.to/img4/27/thumbs/R11_6500sch.gif

Quote:

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Originally Posted by Alain

I saw you were E.T. Manager ... are you one of them ???

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That depends on what you mean by E.T. ?


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Quote:

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Originally Posted by sayzer

Hi Alain,

These days, I have been really strange (even to myself).

I guess I have not been able to focus on things precisely recently.

This may be a cause of me engaged to be married. I now have a fiancé.


>> I suppose it's a quite normal state for a normally constituted person ...one day , we must leave childhood ....


That depends on what you mean by E.T. ?]

>> Extra Terrestrian, of course !!! ... thinking to it twice... it was I.T. not E.T.!!!


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I didn't know your scheme ...

but remember measuring contactlessly short distances with a 1/3000 resolution is quite a nice piece of cake !!! ( the sonic way is very dependant of temp and humidity, and the light way ... is far too fast on such distances.)

why don't you want to build simple things ???

Alain

Quote:

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Originally Posted by sayzer

Hi Alain,

These days, I have been really strange (even to myself).

I guess I have not been able to focus on things precisely recently.

This may be a cause of me engaged to be married. I now have a fiancé.

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Well...another regular contributor soon to be gone from the list :) Unless this other person is a co-designer/co-programmer...

Quote:

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Originally Posted by Acetronics

I didn't know your scheme ...

but remember measuring contactlessly short distances with a 1/3000 resolution is quite a nice piece of cake !!! ( the sonic way is very dependant of temp and humidity, and the light way ... is far too fast on such distances.)

why don't you want to build simple things ???

Alain

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Alain,

This is not what I want to build. This is an inquiry that I want to catch and respond. I was thinking about laser ones but I have very limited time to do research on things.
Thanks to this forum and people like you. I can at least get some ideas so that I will know where and what to look for.

Quote:

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Originally Posted by skimask

Well...another regular contributor soon to be gone from the list Unless this other person is a co-designer/co-programmer...

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C'mon skimask,who can take us away from this forum?

BTW: Don't let my fiancé see this post, ok?


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You can buy standard commercial devices that will do this like having a poo, they are used on machinery, and in hoppers, they can measure water level in a hopper full of steam if needs be, they use an infrared laser from memory they are around $300NZ and i think measure upto 10M with 1mm resolution