Sensor with self-test means

摘要

The sensor has a pressure sensor that is responsive to a set of parameters such as pressure or temperature. A calculation unit is utilized for calculating a digital estimate of the set of parameters. A complete mathematical model of the set of parameters is determined. The calculation unit estimates a value for each of a set of primary and secondary parameters e.g. overpressure. A comparison unit is utilized for comparing the set of primary and secondary parameters. A modification unit modifies the set of primary and secondary parameters based on the complete mathematical model. The pressure sensor is a micro electro-mechanical sensor.