Remote automatic reading system

Details Remote automatic reading system Remote automatic reading system

1975-09-05

1977-02-15

Pitts, Harold I.

Communications: electrical

Digital comparator systems

340150, H04Q 900

Patent

active

040084582

ABSTRACT:
Utility or industrial meters having rotating elements are monitored by an automatic reading unit through which digital input data is stored and read out in response to interrogation by a coded polling signal transmitted to the unit through telephone lines. Readout occurs during a transmit cycle and includes the serial transfer of stored digital data to digital synthesizers through which data is converted to a sinusoidal analog signal transmitted by the telephone lines for decoding at a data collecting station. By the addition of optional components, time of day metering, demand metering and the exercise of control functions at a remote site may be effected.

REFERENCES:
patent: 3786423 (1974-01-01), Martell
patent: 3820074 (1974-06-01), Toman
patent: 3829835 (1974-08-01), Stewart

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