What type of temperature sensor should be used for measuring room temperature???

[Hartman7]

Hello,
I'm currently a senior Electrical Engineering student at the Citadel. I'm working on my senior design project and could use alittle help.
*Our project is to design a system that will detect temperature in three rooms and transmit the info via wireless communcications to a remote computer. The computer will log and display the data.*

Here are my questions:

1) What type of thermocouple if any should be used?
2) If so, will the AD590 chip amplify the thermoucouple voltage enough?
3) Any recommendations on what A/D converters could be used?

Any additional advice would be great.

Thank you for your time and consideration,

Mitchell
Hartman

[Tim_Ousley]

Any thermocouple would work, but an E type thermocouple would give you about 4mV of signal (from 0C to 50C). You could also use a thermistor in a wheatstone bridge. You could use an MIO card for prototyping. If you are making an embedded device and need to use ADCs, look at questlink.com. They have lots of chip info.

[sabreresearch]

Dear Tim,
Compleately agreed with your answer,Additionally why dont you think about MAXIM for signal conditioning for embedded systems.AD is also good.But MAXIM is better

[Enrique]

The following is an excellent website that explain lots of details about temperature and sensors:

http://www.temperatures.com/

Good luck!
EJV

[kamuela]

Interface to the existing thermostats in the room. Most common thermostats are very accurate for the purposes you seem to be doing. Are you working in a nuclear plant??????