Idea for wireless commuication and human finding project help

Projects General Guidance
1

I am currently trying to do this project where I can sending this bot into a room and it can scan for people and send the number of people in a room back to a computer wirelessly. This can be used for fires, earthquakes, etc.
My questions basically are-
What type of sensor can I use to scan for a human in a room?
Is it possible to send back results wirelessly saying that people are in a room or arent in a room? What kind of board would be needed?
Is it possible to find out how many people are in a room with the sensor wirelessly aswell or can it only tell if people are in the room?

Thanks so much, I have had huge problems trying to answer these questions.

2

Is there a device that can be used to tell if a human is in a room? For example like in a room with a fire or a room with very little light if any would be where this device would be mostly used. Also if there is a device can it be used to count how many humans are in a room?

3

Is there something that can send results from a sensor back to a computer? For example, the board is going to be used to be put in a room where it will send results if people are in a room and how many people(if its possible) back to a computer wirelessly?
Is there such a thing?
Thanks, this has been troubling me for a while!

4

The short answer is , yes. There are several ways, and it should not have been troubling you for very long.

Your real problem is the sensor, sending the data is easy and commonplace.

5

Thermal imaging sensors can be used to track and count people in a room but they are expensive and not completely reliable. Any warm object gives an indication. This thread may be of some use: Tracking a person's motion with a thermal sensor? - Sensors - Arduino Forum

6

BrandonYoung:
Thanks so much, I have had huge problems trying to answer these questions.

No doubt!

BrandonYoung:
I am currently trying to do this project where I can sending this bot into a room and it can scan for people and send the number of people in a room back to a computer wirelessly. This can be used for fires, earthquakes, etc.

The first obstacle I see in this is - obstacles. You really are going to need a crawler design.

BrandonYoung:
What type of sensor can I use to scan for a human in a room?

PIR would be the first bet. Looks for radiant heat. Unfortunately, PIR sensors are generally used to detect movement of warm objects (i.e., people or animals) because there are many other sources of heat notably sunlight or lights casting shadows here and there and the people you want to detect are likely not moving in order for your to detect them that way. Nevertheless, scanning the sensor may be useful and will be useful in a dark, cool room.

A two-way intercom may also be useful.

BrandonYoung:
Is it possible to send back results wirelessly saying that people are in a room or aren't in a room? What kind of board would be needed?

Very possible, various wireless systems available including Xbee.

BrandonYoung:
Is it possible to find out how many people are in a room with the sensor wirelessly as well or can it only tell if people are in the room?

That is probably going to be more difficult again, it amounts to discerning separate heat sources. They may be clumped together.

7

Please do not cross-post. This wastes time and resources as people attempt to answer your question on multiple threads.

Threads merged.

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8

What type of sensor can I use to scan for a human in a room?

I haven't heard of a single such a sensor of this type. If you can develop one at a reasonable price, you will probably get rich.