Sensor to detect Human Presence

Hello Friends,

Is there any sensor to detect human presence . Am aware of PIR (Passive Infra Red) sensor , which would human motion but not the human presence . Another way is by using image processing technique. Kindly suggest me a better solution .

Thanks.

Top Replies

Former Member over 11 years ago +1

CO2 sensors, at least the living ones breathe. heat radiation, pressure sensors at any chair...
Former Member over 11 years ago +1

I guess it depends what you mean by human presence - certainly the vast majority of intruder alarms detect 'human presence' via PIR sensors.
Robert Peter Oakes over 11 years ago +1

A few of these which are easy to drive with arduino or other micro controllers should be able to cover a room http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR7.TRC1.A0.H0.Xultrasonic…

0 Former Member over 11 years ago

CO2 sensors, at least the living ones breathe. heat radiation, pressure sensors at any chair...
Cancel
Vote Up +1 Vote Down

Sign in to reply

Verify Answer

Cancel
0 Former Member over 11 years ago

You could use a door sensor combined with a PIR sensor perhaps?
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

Cancel
0 kidiccurus over 11 years ago in reply to Former Member

Map the room with sonar and scan for any changes.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

Cancel
0 Former Member over 11 years ago

I guess it depends what you mean by human presence - certainly the vast majority of intruder alarms detect 'human presence' via PIR sensors.
Cancel
Vote Up +1 Vote Down

Sign in to reply

Verify Answer

Cancel
0 D_Hersey over 11 years ago

Often, they are ultrasonic transducers that exploit the doppler effect. Stationary objects that reflect the pinger return some of the energy, at the frequency of emission. If an object is moving toward the detector, fq is up-shifted. Away, down-shifted. We notch out the carrier and detect the remainder.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

Cancel
0 Robert Peter Oakes over 11 years ago

A few of these which are easy to drive with arduino or other micro controllers should be able to cover a room

http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR7.TRC1.A0.H0.Xultrasonic+sensor&_nkw=ultrasonic+sensor&_sacat=0

Regards

Peter
Cancel
Vote Up +1 Vote Down

Sign in to reply

Verify Answer

Cancel
0 turfgnome over 11 years ago

Are you looking for something like this?

Sensors - Grid-EYE - Evaluation Kit
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

Cancel
0 Former Member over 11 years ago

motion sensors .. like z-move for zigbee will work for you.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

Cancel
0 markvenn over 11 years ago in reply to Former Member

floor sensors can be deployed that measure the movement of a person around a house. PIR can be confused by a large pet as could CO2 detectors I assume. Of course, inject everyone at birth with an RFID tag and away you go.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

Cancel
0 smartengineer over 10 years ago

Seismic detector with treshold cutting.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

Cancel