Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Meter protection or fraud combatting
Patent
1984-09-13
1987-05-12
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Meter protection or fraud combatting
G01R 100
Patent
active
046653597
ABSTRACT:
Tampering with an optically encoded meter display register or metering mechanism can be readily detected by comparing the quantity shown by the meter display with the encoded values of the optical encoders. A discrepancy is indicative of tampering with the register display. Any tampering with the optical encoders or the metering mechanism can be detected by comparing the present position of the encoders with that of a previous position and generating a signal indicative of tampering when these positions have a predetermined relationship to each other.
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Ward, S. et al., "Diode Laser Communications for Remote Utility Meter Reading", Proc. SPIE, vol. 150, Laser & Fiber Optics Communications (1978), pp. 103-107.
IBM Technical Disclosure Bulletin, vol. 16, No. 9, Feb. 1974, "Calibration of Analog Channels", Kennedy, P., p. 2771.
Baker Stephen M.
Eisenzopf Reinhard J.
Gaudier Dale
Sangamo Weston, Inc.
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