Hi, I have set up at VI (attached) that makes use of a DAQ. The project that I am working on is to control the temperature of both the refrigerator and freezer compartments. This is done by turning the output of the appropriate channel on whenever the temperature in either compartment rises above the set level.
I am having no problem turning the ports on and off, so this portion of the project works. But I am having a problem coming up with logic that allows me to turn on and off the unit's compressor (for the freezer) and fan (to pull freezer air into the refrigerator compartment). The goal is to allow a buffer region around the set temperature, so that the compressor or fan are not always being cycled on and off as the temperature rises above the set temperature and falls below it.
So, the goal is to keep the compartments set at the temperature that the user sets by turning the compressor and fan on and off, but in addition, the compressor and fan cannot constantly be turning on and off because this will damage the devices, most importantly the compressor. If anyone has any ideas, or has experience with this, I would greatly appreciate your help. Thank you.
