AXEL counter

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yoge8856

New Member

• Apr 5, 2009

• #1

Hi all i want to design a circuit which can be used to count the number of wheels in a train using IR detection.
Please help to design the same.

 

Wond3rboy

Member

• Apr 5, 2009

• #2

What do you want to do?Count them when it is moving?I mean for what?

First of all do you know how IR sensors work? You have a transmitter and a Receiver.A train travels very fast, and how would you mount a system to do this practically?Counting can be done in various ways and the best is using microcontrollers.

 

mramos1

Active Member

• Apr 5, 2009

• #3

What size train? Is direction important? Is this out in the sunlight where IR will be an issue?

A little more detail will get you more ideas. Maybe look into laser. Will you be allowed to mount them near the track assuming a real train?

 

Y

yoge8856

New Member

• Apr 5, 2009

• #4

my design is like when ever a wheel passes between the IR TX and RX it will give you a pulse, this pulse will give an interrupt to the Micr0 (eg ,8051),
on the BAsis of the interrupt micro will count the no of wheel passed through a signal.

 

blueroomelectronics

Well-Known Member

• Apr 5, 2009

• #5

Sounds like a school project. Is it real trains or toy trains?

 

Y

yoge8856

New Member

• Apr 5, 2009

• #6

this is a demo model for trains automatic signalling based on axel counter

 

blueroomelectronics

Well-Known Member

• Apr 5, 2009

• #7

So it's for toy trains? What scale? HO, N, TT, O?

 

Y

yoge8856

New Member

• Apr 5, 2009

• #8

we can go with toy train

 

blueroomelectronics

Well-Known Member

• Apr 5, 2009

• #9

Then build a small opto pair across the track so it breaks the beam when a wheel passes over.
**broken link removed**

 

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yoge8856

New Member

• Apr 5, 2009

• #10

i have only one doubt hwith this whether this circuit will give me a sharp pulse which can interrupt micro?

 

blueroomelectronics

Well-Known Member

• Apr 5, 2009

• #11

Run it through a Schmitt input. It's just a circuit I Googled off the net.

 

Y

yoge8856

New Member

• Apr 5, 2009

• #12

Thanks for ur quick response.
i will check it out .

 

K

KMoffett

Well-Known Member

• Apr 5, 2009

• #13

blueroomelectronics said:

Then build a small opto pair across the track so it breaks the beam when a wheel passes over.
**broken link removed**

Click to expand...

Rather across the track, you could put across one rail.
Just an option.

Ken

 

tcmtech

Banned

Most Helpful Member

• Apr 5, 2009

• #14

I just count the number of cars and muliply by 8! But thats just me.

 

mramos1

Active Member

• Apr 5, 2009

• #15

Or detect the first train, send signal, then when no more cars, delay and open the gate?