Infrared emitter and detector LEDs

[wat007]

Hi,

Please give me partnumbers of common IR emitters and detectors please? Those that can be use in toilet for automatic flushing. Thank.

Regards,
wat007

 

[MUKESH.K.S]

You can use PIR sensors for this application

 

[wat007]

Hi Mukesh.k.s but i am looking for an active one which i think is a bit cheaper because we do not need a lens/cover.
The application of this also can be indoors or outdoors which makes the active IR sensors a better option to filter out infrared of foreign objects like the sun by modulating the emitter. Please correct me if I am wrong.

And i need to know common partnumbers of thses sensors. I tried using TCRT5000 but very limited distance range (30mm max). Do you have some alternatives?

 

[FvM]

You'll find optical proximity sensors with larger range e.g. at Silabs.

 

[wat007]

Hi FvM,

Thanks. What is the main factor of the IR emitter's range? Is it the forward current?

 

[FvM]

Forward curent and beam angle plays a role, more inportant is the receiver topology. For distances above a few mm and ambient light immunity, you'll generaly go to modulated (pulsed) light.