how can i convert human blackbody radiation into electrical energy??can i use infrared camera?

Although it Is possible to utilize thermal differntials even from a person, a camera isn`t really the way to go, there are a few designs of heat exchange units that will do this however!

sadly you`ll not be looking at great amounts of usable energy, in fact you`ll be lucky to get above unity in most instances and implementations.

Peltier devices may be of some use though?

A Lady I know of that also is on here did a great tutorial some time back using a cct called a Joule Theif, this also will be of some interest to you.

all the best

I wasn`t entirely clear about your initial request, my appologies.

yes, it seems that you will require a Passive Infra-Red (PIR) detector as a trigger for your system, this will indeed detect changes in thermal radiation, and happily they can be purchased quite easily, often as a Module requiring a single voltage supply (5v volts usually), and they output a Logic signal (High/Low) when triggered.

some you will be able to set the delay and recovery time on as well, but factory settings are normaly sufficient.

you`ll not need a camera, the Pyro semiconductor does all the work for you and costs several orders of magnitude less (always a good thing!).

I`ll have a google around and see if I can find some of these for you, ebay sells them already mounted on a board with associated logic as Shields for Arduino as well.

here is such a device:

I could not read your .pptx as its format was not for OpenOffice.

The ir camera might get a few nA per pixel, so it is not useful for energy collection.  All materials which do make photocurrent from incident 2 to 10 microns wavelength such as PbSe are expensive, and some of those are subject to severe export restrictions due to the possibility of someone malicous using them to make heat seeking missiles.

The type of thermal camera which you'd want for a demo picture is commercially available but costs much more than a car, so you'd want to borrow one rather than own one.  If you are at a university then maybe try asking if anyone in research could lend you one for an hour.

The parts from YT2095 sound ok for a device triggered by human thermal output.