Hello all!
Im noob with electronics, but im developing a simple hangers counter.
I make him using an ldr sensor and one laser pointing it, and every time one hanger passes through them it counts well.
My problem sometimes with certain clothes the head of the hanger passes glued one to another and dont have enough gap to the laser light crosses him.
how can i solve this problem?
The hangers whit im having problems its similar to these:
And travels like this photo:
Sorry about my english!!
Seems logical to count the wire/hooks just below the bar.
Leo..
Its where im counting, but maybe sounds a bit strange, but sometimes that part comes glued too. This only happens with certains hangers more thin.
am i right in thinking you have different hangars ?
If they are all the same it will make sensing easier.
If wire hangers you could possibly use magnetic sensing.
if plastic possibly colour sensors or cameras.
i have a variety of hangers but all have a metal head.
Do you think if hangers come glued i can know they are 2 using a magnetic sensor?
Put 2 optical sensors close enough that you can measure the speed of individual hangars. Then you will know if a "fat" one passes because it's moving fast but blocks the sensor for a long time.
To help us brainstorm solutions to your glued hangar problem, can you post pictures that show this problem?
I dont have 2 similar hangers at home but i tried to simulate the situation with the 2 i have
are they travelling on a steel bar or plastic one ?
I think your basic idea is sound, but the hangers are letting you down...
For reference, rather than saying 'glued' together, you can say they are 'sticking together'
The earlier suggestion is probably the best, with two sensor beams very close together, set up so they can tell the difference between...
A single thin hanger,
A single fat hanger,
A pair of hangers that are stuck, twisted or binding together in some way.
You can't rely on a simple thickness or gap, but must work on a combination - including the interval between beam breaks (distance and/or time) will vary... think like a barcode scanner !
thanks all for the replies.
I go try use 2 sensors to solve my problem.
