Go Down

Topic: Measuring a very fine wire with 10 µm precision (Read 6004 times) previous topic - next topic

Boots507

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

johnwasser

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

dhenry

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

PeterH


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


Have you considered using a microscope?
I only provide help via the forum - please do not contact me for private consultancy.

gardner

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

Boots507


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.

Boots507



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.

Boots507

#7
Jan 21, 2013, 04:34 am Last Edit: Jan 21, 2013, 04:36 am by Boots507 Reason: 1

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.

vasquo

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

What are you doing?

Boots507


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.

vasquo

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?

Boots507

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).

zoomkat

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.
Google forum search: Use Google Advanced Search and use Http://forum.arduino.cc/index in the "site or domain:" box.

JimboZA

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


But how accurate do you want it?
My hovercraft is full of eels.

No PMs for help please.
DO NOT power servos from Arduino 5V: give them their own power and connect the grounds.

Boots507


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.

Go Up