how do i find out the presence of a person in a room...???

[asha90]

hi i m a final year electrical and electronics student and for my project i need to figure out how to decide if a person is present in a room or not.plz help

 

[sky_123]

Have you done any research into sensors, or looked at how intruder detection systems work?
Your answers may be found by doing that. Or if you wanted to know something beyond that, could you be more specific?

 

[bigdogguru]

Use of a passive IR (PIR) or dual-tech sensor would most likely fulfill your requirements.

BigDog

 

[jeffrey samuel]

IR sensor and Light sensors are readily available can be improvised to suit your need

 

[fredd]

RFID could be an option. ^^,

 

[jeffrey samuel]

RFID could be an option. ^^,

don't you think a tag on the person will also be needed I am not sure about it though