infrared temperature sensor +project
Hi FvM
Thanks a lot for your reply. I have not mesured the noise level from the amplifier or the sensor yet, I will try to do this as soon as possible. Also I will try to get hold of the ina 114 amplifier.
I have conducted a series of tests (the most succesfull one i have atatched for you to see). I have been able to get these readings if i do the folowing.
1. 1000 cycles where i add the results together and devide by 1000 in the end.
2. between each cycle i put a delay of 4 milli seconds
This means that it takes 8 seconds for the setup to produce a single printable value.
This is a bit on the high end i think.
The problem is (as you can see on the graph) that it takes about 19 cycles before the system reaches a steady state...... so about 2,5 minutes before I can actually use the results it produces.
You mentioned that the sensor has to be shielded from its environmen, this migth be the problem. I am using a light bulb that emits about 65 dgr celcius of heat. I am figuring that the sensor itself is slowly getting warmed up by this heat. ... this may account for the slope of the graph until the sensors own material is equilibrium (temperature wise)....
I simply dont know - am only speculating...
If you have any further comments on what information i have added here please let me know - its much apriciated
Kristian