Electronic Electricity Meter Self-Verification Redundant Measurement

The patent applies preliminary action by performing self-verification measurements at regular intervals throughout the meter's service life. The meter continuously monitors its own measurement accuracy using redundant measurement circuits and compares results against predefined thresholds, detecting calibration drift before it becomes problematic. This proactive approach allows the meter to maintain reliability without requiring frequent external calibration interventions.

The patent implements feedback mechanisms where the meter uses its own measured values to verify measurement accuracy. The processing unit compares measured quantities from different circuits and provides feedback signals that trigger alerts or corrections when deviations exceed predetermined thresholds. This closed-loop feedback system enables continuous self-monitoring and maintains measurement precision throughout the extended calibration period.

The patent applies self-service by enabling each meter to autonomously verify its own measurement accuracy without requiring external intervention. The meter performs self-diagnosis using redundant measurement circuits, processes its own data, and generates its own verification reports. This eliminates the need for manual random sampling and extensive organizational effort while maintaining reliable calibration validation.

The patent replaces the mechanical/random sampling approach with an electronic automated verification system. Instead of physically inspecting random samples of meters, the system uses electronic self-verification measurements and digital data processing to continuously monitor calibration validity. This substitution of mechanical inspection with electronic self-diagnosis dramatically reduces organizational effort and time consumption.