Sensor measurement verification in quasi real-time

A system for real-time diagnosing of an analog sensor measurement, the system comprising:

• at least one sensor that generates an analog signal indicative of a variable being measured;
• an analog-to-digital converter, in communication with the at least one sensor, that converts the analog signal into digital samples measured at an oversampling rate;
• a pre-processor that receives the digital samples, during a measurement mode, and generates a digital output at a target sampling rate, wherein the oversampling rate is N times the target sampling rate;
• and
• a controller configured to receive and process a diagnostic signal, during a diagnostic mode, wherein a last digital output prior to the diagnostic mode is computed from less than N previously measured digital samples.