i am using normal transmitter reciever pairs for a line tracer that im building.....
I have to ask too... What have you got? (Component numbers and/or datasheets would be helpfull).
the main problem we r facing is that the ambient light is saturating our trans reciever pairs.....
No IR sensor can totally reject ambient light, since ambient light contains infrared.
The IR emitter shouldn't have no saturation problems from ambient.
can ne1 suggest an effective way to shield off the ambient light so that our sensors read only from the floor?pleez i request urgent solution!
Don't know who "ne1" is, please use the Spell Check
First line of defense should be physically shielding (with IR opaque material) as much as possible, perhaps move the sensors closer to the floor if possible.
When you can't get more from the mechanical methods, you have to adjust the current through the sensing element (assuming it's a photodiode or -transistor), to keep a sensible biasing according to unresolved ambient IR.
If the light is varying too much to keep up a functional bias, a closed circuit bias control could be used to really increase the dynamic range.
But ante up - throw some type numbers in the pot.
No type numbers => no qualified answers.