Magnetic Tampering Detection and Correction in a Utility Meter

摘要

An arrangement for use in an electricity meter includes a sensor and a processing circuit. The sensor is supported directly or indirectly by a meter housing. The sensor is configured to measure a magnetic field in proximity to a current sensor of the electricity meter. The sensor is also configured to generate a measurement signal representative of, at least in part, a magnitude of the magnetic field. The processing circuit is operably coupled to receive first information representative of the measurement signal. The processing circuit is configured to obtain a first value representative of the magnetic field based on the first information, and determine a first adjustment value responsive to a determination that the first value exceeds the first threshold value. The processing circuit is further configured to generate energy consumption information based at least in part on the first adjustment value.

主权项

1. An arrangement for use in an electricity meter, comprising:
a sensor supported directly or indirectly by a meter housing, the sensor configured to measure a magnetic field in proximity to a current sensor of the electricity meter, the sensor configured to generate a measurement signal representative of, at least in part, a magnitude of the magnetic field; a processing circuit operably coupled to receive first information representative of the measurement signal and operably coupled to receive current measurement information representative of a current measurement signal generated by the current sensor based on the line current, the processing circuit configured to
obtain a first value representative of the magnetic field based on the first information;determine a first adjustment value responsive to a determination that the first value exceeds a first threshold value; andgenerate energy consumption information based at least in part on the first adjustment value and the current measurement information.