coil winding sensor

L

lerameur

Guest
hello,

I want to make a coil winding machine, I would like to implement a
sensor so I can count the velocity of the wire I am coiling so I can
accurately count the length of the wire,
is there any type of sensors out there that can do that.
thanks
k
 
lerameur wrote:
hello,

I want to make a coil winding machine, I would like to implement a
sensor so I can count the velocity of the wire I am coiling so I can
accurately count the length of the wire,
is there any type of sensors out there that can do that.
thanks
k
Search on "optical interrupter".
Click to expand...

To count turns you attach a wheel to your coil spindle that has a slot
(or slots) in its edge. Then you shine a light through the path of the
slots, and receive the light with a photo transistor. Then you count
the number of times the light flashes, divide by the number of slots,
and you have a turns count.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" gives you just what it says.
See details at http://www.wescottdesign.com/actfes/actfes.html
 
On Tue, 17 Jun 2008 12:05:29 -0700, Tim Wescott <tim@seemywebsite.com>
wrote:

lerameur wrote:
hello,

I want to make a coil winding machine, I would like to implement a
sensor so I can count the velocity of the wire I am coiling so I can
accurately count the length of the wire,
is there any type of sensors out there that can do that.
thanks
k
Search on "optical interrupter".

To count turns you attach a wheel to your coil spindle that has a slot
(or slots) in its edge. Then you shine a light through the path of the
slots, and receive the light with a photo transistor. Then you count
the number of times the light flashes, divide by the number of slots,
and you have a turns count.
Click to expand...
---
But that only gives him turns, not length of wire, and if he's winding
more than one layer...

To get length he could run the wire over a slotted idler.

JF
 
On Tue, 17 Jun 2008 21:45:51 +0100, "christofire"
<christofire@btinternet.com> wrote:

"lerameur" <lerameur@yahoo.com> wrote in message
news:d3a21af4-063e-4756-a08b-a2062bd57dad@w7g2000hsa.googlegroups.com...
On Jun 17, 3:34 pm, John Fields <jfie...@austininstruments.com> wrote:
On Tue, 17 Jun 2008 12:05:29 -0700, Tim Wescott <t...@seemywebsite.com
wrote:



lerameur wrote:
hello,

I want to make a coil winding machine, I would like to implement a
sensor so I can count the velocity of the wire I am coiling so I can
accurately count the length of the wire,
is there any type of sensors out there that can do that.
thanks
k
Search on "optical interrupter".

To count turns you attach a wheel to your coil spindle that has a slot
(or slots) in its edge. Then you shine a light through the path of the
slots, and receive the light with a photo transistor. Then you count
the number of times the light flashes, divide by the number of slots,
and you have a turns count.

---
But that only gives him turns, not length of wire, and if he's winding
more than one layer...

To get length he could run the wire over a slotted idler.

JF

the problem is that the sensor sees the wire, but this is thin wire
and I dont think the sensor will actually the wire moving.
I think by adding a control wheel with rubber around it while adding
a sensor to that wheel could work good enough.

k

You could measure the added weight of the bobbin after winding and, with
reference to weight-per-metre data from the wire manufacturer, calculate the
length. Seems the simplest way to me.
Click to expand...
---
It would be nice to know how much wire was going on the bobbin (or
whatever) as it was being wound, otherwise how would you know when you
were finished?

JF
 
On Tue, 17 Jun 2008 13:21:26 -0700 (PDT), lerameur
<lerameur@yahoo.com> wrote:

On Jun 17, 3:34 pm, John Fields <jfie...@austininstruments.com> wrote:
On Tue, 17 Jun 2008 12:05:29 -0700, Tim Wescott <t...@seemywebsite.com
wrote:



lerameur wrote:
hello,

I want to make a coil winding machine, I would like to implement a
sensor so I can count the velocity of the wire I am coiling so I can
accurately count the length of the wire,
is there any type of sensors out there that can do that.
thanks
k
Search on "optical interrupter".

To count turns you attach a wheel to your coil spindle that has a slot
(or slots) in its edge. Then you shine a light through the path of the
slots, and receive the light with a photo transistor. Then you count
the number of times the light flashes, divide by the number of slots,
and you have a turns count.

---
But that only gives him turns, not length of wire, and if he's winding
more than one layer...

To get length he could run the wire over a slotted idler.

JF

the problem is that the sensor sees the wire, but this is thin wire
and I dont think the sensor will actually the wire moving.
I think by adding a control wheel with rubber around it while adding
a sensor to that wheel could work good enough.
Click to expand...
---
You've just described an idler.

JF
 
lerameur wrote:
On Jun 17, 5:10 pm, John Fields <jfie...@austininstruments.com> wrote:
On Tue, 17 Jun 2008 13:21:26 -0700 (PDT), lerameur



leram...@yahoo.com> wrote:
On Jun 17, 3:34 pm, John Fields <jfie...@austininstruments.com> wrote:
On Tue, 17 Jun 2008 12:05:29 -0700, Tim Wescott <t...@seemywebsite.com
wrote:

lerameur wrote:
hello,

I want to make a coil winding machine, I would like to implement a
sensor so I can count the velocity of the wire I am coiling so I can
accurately count the length of the wire,
is there any type of sensors out there that can do that.
thanks
k
Search on "optical interrupter".

To count turns you attach a wheel to your coil spindle that has a slot
(or slots) in its edge. Then you shine a light through the path of the
slots, and receive the light with a photo transistor. Then you count
the number of times the light flashes, divide by the number of slots,
and you have a turns count.

---
But that only gives him turns, not length of wire, and if he's winding
more than one layer...

To get length he could run the wire over a slotted idler.

JF

the problem is that the sensor sees the wire, but this is thin wire
and I dont think the sensor will actually the wire moving.
I think by adding a control wheel with rubber around it while adding
a sensor to that wheel could work good enough.

---
You've just described an idler.

JF

I need about 1 pound, which is roughly 2100 feet.

k
Click to expand...
Disassemble an old mechanical mouse, attach a shaft
from one axis roller to your control wheel. Presto!
Instant pulse counter.

Forward *and* reverse. Straight into your computer.
 
On Jun 17, 3:34 pm, John Fields <jfie...@austininstruments.com> wrote:
On Tue, 17 Jun 2008 12:05:29 -0700, Tim Wescott <t...@seemywebsite.com
wrote:



lerameur wrote:
hello,

I want to make a coil winding machine, I would like to implement a
sensor so I can count the velocity of the wire I am coiling so I can
accurately count the length of the wire,
is there any type of sensors out there that can do that.
thanks
k
Search on "optical interrupter".

To count turns you attach a wheel to your coil spindle that has a slot
(or slots) in its edge. Then you shine a light through the path of the
slots, and receive the light with a photo transistor. Then you count
the number of times the light flashes, divide by the number of slots,
and you have a turns count.

---
But that only gives him turns, not length of wire, and if he's winding
more than one layer...

To get length he could run the wire over a slotted idler.

JF
Click to expand...
the problem is that the sensor sees the wire, but this is thin wire
and I dont think the sensor will actually the wire moving.
I think by adding a control wheel with rubber around it while adding
a sensor to that wheel could work good enough.

k
 
On Jun 17, 5:10 pm, John Fields <jfie...@austininstruments.com> wrote:
On Tue, 17 Jun 2008 13:21:26 -0700 (PDT), lerameur



leram...@yahoo.com> wrote:
On Jun 17, 3:34 pm, John Fields <jfie...@austininstruments.com> wrote:
On Tue, 17 Jun 2008 12:05:29 -0700, Tim Wescott <t...@seemywebsite.com
wrote:

lerameur wrote:
hello,

I want to make a coil winding machine, I would like to implement a
sensor so I can count the velocity of the wire I am coiling so I can
accurately count the length of the wire,
is there any type of sensors out there that can do that.
thanks
k
Search on "optical interrupter".

To count turns you attach a wheel to your coil spindle that has a slot
(or slots) in its edge. Then you shine a light through the path of the
slots, and receive the light with a photo transistor. Then you count
the number of times the light flashes, divide by the number of slots,
and you have a turns count.

---
But that only gives him turns, not length of wire, and if he's winding
more than one layer...

To get length he could run the wire over a slotted idler.

JF

the problem is that the sensor sees the wire, but this is thin wire
and I dont think the sensor will actually the wire moving.
I think by adding a control wheel with rubber around it while adding
a sensor to that wheel could work good enough.

---
You've just described an idler.

JF
Click to expand...
I need about 1 pound, which is roughly 2100 feet.

k
 
On Tue, 17 Jun 2008 14:37:39 -0700 (PDT), lerameur
<lerameur@yahoo.com> wrote:

On Jun 17, 5:10 pm, John Fields <jfie...@austininstruments.com> wrote:
On Tue, 17 Jun 2008 13:21:26 -0700 (PDT), lerameur



leram...@yahoo.com> wrote:
On Jun 17, 3:34 pm, John Fields <jfie...@austininstruments.com> wrote:
On Tue, 17 Jun 2008 12:05:29 -0700, Tim Wescott <t...@seemywebsite.com
wrote:

lerameur wrote:
hello,

I want to make a coil winding machine, I would like to implement a
sensor so I can count the velocity of the wire I am coiling so I can
accurately count the length of the wire,
is there any type of sensors out there that can do that.
thanks
k
Search on "optical interrupter".

To count turns you attach a wheel to your coil spindle that has a slot
(or slots) in its edge. Then you shine a light through the path of the
slots, and receive the light with a photo transistor. Then you count
the number of times the light flashes, divide by the number of slots,
and you have a turns count.

---
But that only gives him turns, not length of wire, and if he's winding
more than one layer...

To get length he could run the wire over a slotted idler.

JF

the problem is that the sensor sees the wire, but this is thin wire
and I dont think the sensor will actually the wire moving.
I think by adding a control wheel with rubber around it while adding
a sensor to that wheel could work good enough.

---
You've just described an idler.

JF

I need about 1 pound, which is roughly 2100 feet.
Click to expand...
---
And your point is...?

JF
 
On Wed, 18 Jun 2008 18:47:38 +0100, "christofire"
<christofire@btinternet.com> wrote:

"John Fields" <jfields@austininstruments.com> wrote in message
news:er9g549fjpbksh8m80ju2p81bpkevkasuj@4ax.com...
On Tue, 17 Jun 2008 21:45:51 +0100, "christofire"
christofire@btinternet.com> wrote:

-- snip --

---
It would be nice to know how much wire was going on the bobbin (or
whatever) as it was being wound, otherwise how would you know when you
were finished?

JF


By achievement of the required number of turns?
Click to expand...
---
Perhaps, but all the OP has stated is that he wants to measure the
_length_ of wire used to wind a coil (not the number of turns) and
that one pound of the wire is about 2100 feet long.
---

Perhaps I've misunderstood - maybe this is about coil winding of resistors
not inductors or transformers!
Click to expand...
---
I'm guessing that it's a solenoid of some kind, but unless the OP
tells us, who really knows?

JF
 
On Jun 18, 2:28 pm, John Fields <jfie...@austininstruments.com> wrote:
On Wed, 18 Jun 2008 18:47:38 +0100, "christofire"



christof...@btinternet.com> wrote:

"John Fields" <jfie...@austininstruments.com> wrote in message
news:er9g549fjpbksh8m80ju2p81bpkevkasuj@4ax.com...
On Tue, 17 Jun 2008 21:45:51 +0100, "christofire"
christof...@btinternet.com> wrote:

-- snip --

---
It would be nice to know how much wire was going on the bobbin (or
whatever) as it was being wound, otherwise how would you know when you
were finished?

JF

By achievement of the required number of turns?

---
Perhaps, but all the OP has stated is that he wants to measure the
_length_ of wire used to wind a coil (not the number of turns) and
that one pound of the wire is about 2100 feet long.
---

Perhaps I've misunderstood - maybe this is about coil winding of resistors
not inductors or transformers!

---
I'm guessing that it's a solenoid of some kind, but unless the OP
tells us, who really knows?

JF
Click to expand...
nope, making an electro magnet.
I dont think I will pursue with the project as is though.
or at least leave it for a while.


k
 
On Jun 18, 2:28 pm, John Fields <jfie...@austininstruments.com> wrote:
On Wed, 18 Jun 2008 18:47:38 +0100, "christofire"



christof...@btinternet.com> wrote:

"John Fields" <jfie...@austininstruments.com> wrote in message
news:er9g549fjpbksh8m80ju2p81bpkevkasuj@4ax.com...
On Tue, 17 Jun 2008 21:45:51 +0100, "christofire"
christof...@btinternet.com> wrote:

-- snip --

---
It would be nice to know how much wire was going on the bobbin (or
whatever) as it was being wound, otherwise how would you know when you
were finished?

JF

By achievement of the required number of turns?

---
Perhaps, but all the OP has stated is that he wants to measure the
_length_ of wire used to wind a coil (not the number of turns) and
that one pound of the wire is about 2100 feet long.
---

Perhaps I've misunderstood - maybe this is about coil winding of resistors
not inductors or transformers!

---
I'm guessing that it's a solenoid of some kind, but unless the OP
tells us, who really knows?

JF
Click to expand...
nope, making an electro magnet.
I dont think I will pursue with the project as is though.
or at least leave it for a while.


k
 
On Tue, 17 Jun 2008 11:43:51 -0700, lerameur wrote:
I want to make a coil winding machine, I would like to implement a sensor
so I can count the velocity of the wire I am coiling so I can accurately
count the length of the wire, is there any type of sensors out there that
can do that. thanks
Click to expand...
Why 'velocity'? Why not just a wheel and counter?

Good Luck!
Rich
 
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