schematic diagram for thermal sensor

[floyd00001]

Good day, I'm having my science project that involves thermal sensor to automatically turn-on the computer when it detects body temperature. Can i ask if anyone know how's the schematic diagram for my project 'coz i don't have any knowledge on this part. thanks

 

[ericgibbs]

Good day, I'm having my science project that involves thermal sensor to automatically turn-on the computer when it detects body temperature. Can i ask if anyone know how's the schematic diagram for my project 'coz i don't have any knowledge on this part. thanks

hi,
Look at these links for a PIR circuit.
pir circuit - Google Search

 

[floyd00001]

does those diagram the same if i use silicone diode for the sensors instead of PIR?

 

[ericgibbs]

does those diagram the same if i use silicone diode for the sensors instead of PIR?

hi,
If you want to detect body heat radiation, then a Passive Infra Red detector is the best option.

Usually ordinary silicon photo diodes do not cover the body radiation frequency, also the PIR uses a Fresnel lens/reflector.

Tell us more about the project so that we can suggest ideas.