Pages: [1] 2 3 4   Go Down
Author Topic: Measuring a very fine wire with 10 µm precision  (Read 5145 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Newbie
*
Karma: 0
Posts: 16
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hi,

My goal is to measure a very fine wire with 10 µm (or better) precision using the arduino. I've been looking around for a way to do this and I could not find anything other than laser micrometer. (i.e. http://www.micro-epsilon.com/optical-micrometer/micrometer/optoCONTROL_1200/index.html)

Is anyone familiar with a strategy/way to achieve this in a DIY fashion using the arduino. What kind of sensors would you need?

Thank you

Boots
Logged

Massachusetts, USA
Offline Offline
Tesla Member
***
Karma: 212
Posts: 8967
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

It might help if you give an actual dimension for  "very fine wire". 

I'm guessing you are measuring the width of the wire.  Is that true?

How frequently do you need to make the measurement?
Logged

Send Bitcoin tips to: 1L3CTDoTgrXNA5WyF77uWqt4gUdye9mezN
Send Litecoin tips to : LVtpaq6JgJAZwvnVq3ftVeHafWkcpmuR1e

Offline Offline
Edison Member
*
Karma: 116
Posts: 2205
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

one approach would be to use the wire to set the gap between two metal plates and measure the capacitance between them.
Logged

UK
Offline Offline
Shannon Member
****
Karma: 223
Posts: 12630
-
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

My goal is to measure a very fine wire with 10 µm (or better) precision using the arduino.

Have you considered using a microscope?
Logged

I only provide help via the forum - please do not contact me for private consultancy.

Ontario
Online Online
God Member
*****
Karma: 25
Posts: 888
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Perhaps measure the resistance of a known length of wire, and correlate to cross-sectional area and thereby diameter.
Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 16
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

It might help if you give an actual dimension for  "very fine wire". 

I'm guessing you are measuring the width of the wire.  Is that true?

How frequently do you need to make the measurement?

Thanks for the reply.

I am talking about a wire of AWG44 around 0.0585 mm in diameter.

Yes, I am measuring the width/diameter of the wire and I would like to make the measurement several time per seconds using the Arduino.
Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 16
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

My goal is to measure a very fine wire with 10 µm (or better) precision using the arduino.

Have you considered using a microscope?

Thanks for the reply.

Yes, but I need to take the measurement automatically and several times per seconds.
Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 16
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

one approach would be to use the wire to set the gap between two metal plates and measure the capacitance between them.


Thanks for the reply.

I am not familiar with this approach. Would you have some examples or perhaps reading on that technique of wire diameter measurement.
« Last Edit: January 20, 2013, 10:36:51 pm by Boots507 » Logged

Offline Offline
Sr. Member
****
Karma: 9
Posts: 296
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Are you serious?
You need to be able to distinguish .001mm precision?

What are you doing?
Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 16
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Are you serious?
You need to be able to distinguish .001mm precision?

What are you doing?

Hi,

10 micrometers = 0.01 millimeters
AWG44 is finest wire gage I would like to be able to measure. I'm trying to read the diameter of the said wire as it unwinds from its spool.
Logged

Offline Offline
Sr. Member
****
Karma: 9
Posts: 296
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I'm thinking 1micron... but still, 0.01mm resolution?

And what's your contraption/Arduino supposed to do when you detect a delta change of 0.01mm in the wire diameter?
Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 16
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I am interested in tightly spooling the wire on a coil former. The coil will then be used for another project and it has to be well packed. Instead of working form the theorical diameter of the wire when making the coil, I am interested in measuring it as it unwinds from it's original spool (more accurate).
Logged

0
Offline Offline
Tesla Member
***
Karma: 145
Posts: 9686
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Quote
Is anyone familiar with a strategy/way to achieve this in a DIY fashion using the arduino. What kind of sensors would you need?

The arduino and its limitations are fairly well understood. The sensor you seek will be the challange. kind of like wanting to use an arduino to turn an empty pizza box into a flat screen tv.
Logged

Consider the daffodil. And while you're doing that, I'll be over here, looking through your stuff.   smiley-cool

Johannesburg. UTC+2
Online Online
Faraday Member
**
Karma: 105
Posts: 4691
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Quote
measure a very fine wire with 10 µm (or better) precision

But how accurate do you want it?
Logged

The Elders of the Internet know who I am
I'm on LinkedIn: http://www.linkedin.com/in/jimbrownza

Offline Offline
Newbie
*
Karma: 0
Posts: 16
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Quote
measure a very fine wire with 10 µm (or better) precision

But how accurate do you want it?

I would be really happy if I could record the wire diameter within 0.001mm. I'm not sure if that is possible.
Logged

Pages: [1] 2 3 4   Go Up
Jump to: