Remote meter reading method and apparatus

Details Remote meter reading method and apparatus Remote meter reading method and apparatus

1992-11-02

1994-05-10

Kuntz, Curtis

Telephonic communications

Telephone line or system combined with diverse electrical...

To produce visual-graphic copy

379106, 379 97, 34087002, H04M 1100

Patent

active

053115813

ABSTRACT:
A remote meter reading system has equipment at a telephone company office coupled by modems to a utility company computer which issues requests for customer data. Telephone test trunks are used to access individual meter sites and initiate meter readings using a number of single frequency bursts. Meter sending units emit a pulse for each unit of consumption and a microprocessor counts the pulses in RAM to derive separate meter readings. When interrogated, the microprocessor outputs the readings in a binary coded decimal format to a DTMF tone generator which emits each decimal number as a tone pair which is transmitted via the telephone line and is detected at the telephone company, translated into ASCII code and transmitted by modem to the utility computer.

REFERENCES:
patent: 4571691 (1986-02-01), Kennon
patent: 4804957 (1989-02-01), Selph et al.
patent: 5010568 (1991-04-01), Merriam et al.

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