Method and apparatus for discrimination of sources in stray voltage detection

摘要

A method and apparatus for discriminating between electric field sources. In one embodiment, the apparatus comprises a mobile detection system comprising a sensor probe for remotely measuring an electric field generated by an electric field source in a patrolled area; and a processor, coupled to the sensor probe, for processing data received from the sensor probe to generate a first field strength and at least a second field strength for determining whether the electric field source is potentially hazardous.

主权项

1. An apparatus for discriminating between electric field sources, comprising:
a mobile detection system comprising:
a sensor probe for remotely measuring an electric field generated by an electric field source in a patrolled area; anda processor, coupled to the sensor probe, for executing computer-executable instructions comprising:
processing electric field data received from the sensor probe to generate strength components of the electric field at a plurality of harmonic frequencies, 10th order and lower;determining a ratio of first strength components at one or more harmonics of a power distribution system's fundamental frequency with second strength components at the power distribution system's fundamental frequency, comparing the ratio to known signatures of one or more electric field sources to identify a type of potentially hazardous objects;determining a level of hazard posed by a potentially hazardous object; andgenerating an indication of whether the electric field source is potentially hazardous according to the type of the potentially hazardous object.