We have a similar set of sensors and protections. Its not actually that complicated - essentially you need sensors in the duct work and in the room. The delta between those can be used in conjunction with a few other things to understand the changes to the external static pressure imparted by opening and closing vents. Combine that with some data analytics on the cloud side to look for overly hot temperature values at the vent or short cycling of the compressor and you can figure out where the limits are for a given system. One big difference though is that they require you to buy an entire set of homes worth of units in order to better calculate some of these coefficients, well except for bathrooms and closets (don’t really understand this given their approach to the rest of the house) while we are suggesting that we can be a bit more flexible. The flexibility comes from a number of studies that have shown safe limits for open and closing are vents by simply knowing the total number of vents (and their size) and preventing too many from closing at any given time. I think the Ecovent system is a well designed system and I hope you enjoy yours. We are excited that people like our technology decisions and are glad to see excitement around the Internet of Practical Things 
Cheers,
Dan