A
LabView Thermometer
The goal of this laboratory is to produce a simulated thermometer in LabVIEW.
Here are the specifications that you need to satisfy.
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The system should measure
two temperatures.
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One temperature should
be measured using a thermocouple. Use terminals 21 & 22 as before.
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One temperature should
be measured using an LM35.
The LM35 should be connected to the front panel. (You may want to
refer to an earlier laboratory.)
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The system should display
both temperatures using "Vertical Fill Slides", colored the traditional
thermometer red.
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The system should display
both temperatures on a chart - to show time variation.
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The system should display
the difference between the two measurements (thermocouple measurement -
LM35 measurement) using a Vertical Fill Slide with a green slider.
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The system should allow
the user to control the time interval between measurements. The time
interval should be input in seconds.
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The system should display
the elapsed time in seconds.
After you have written
the program, do the following in your report. Please note that
the report for this week will be part of a larger report that you will
hand in after you modify your program to add provision for storing data
in files next week. So, start writing this up, but hand it all in
together after next week's lab.
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Be sure that you have
saved copies of the program. Each person in your lab group should
have a copy. You will need to use this program again, next week,
and you won't want to start from scratch.
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Determine how well the
timing works. You should check how many data points are taken each
second when the timing interval is 1, 2, 5 and 10 seconds. Check
over a period of at least two minutes.
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Run the program and compare
the results of the two sensors.
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Your report should include
your program (front panel and diagram) with an explanation of how it works,
and what each element in the program does.
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Your report should include
your results on the two questions above (timing interval and comparison).