I was wondering if it possible to construct a reliable burglar alarm, based on an volumetric air pressure sensor. It should measure changes in air pressure when door or window is opened. We have made some tests with an air pressure sensor, but unless the door is opened very fast, the signal is burried within the sensor noise. As our knowlegde of these types of systems are limited, we hoped someone here would know, if it even is possible. Which sensor ( part number) and circuit would be perferred for such a system?
Here's a sensor that might work for you - it's quite sensitive. MS5611
This has very high resolution (and accuracy) MPL3115A2