Method and apparatus for activating and accessing remote meter i

Details Method and apparatus for activating and accessing remote meter i Method and apparatus for activating and accessing remote meter i

1996-01-22

1998-03-10

Hofsass, Jeffery

Communications: electrical

Continuously variable indicating

With meter reading

34087011, 340505, 34082554, 455 383, G08C 1700

Patent

active

057266468

ABSTRACT:
A remote meter reading system (10) includes a group of meter interface units operable in an inactive state and periodically activated to monitor a communication channel for activity. Each meter interface unit (12) is responsive to communication signals from a meter reading device (15). The meter reading device (15) initiates communication with a first meter interface unit (12) selected from the group. The meter reading device (15) transmits to the first meter interface unit, a first message including a request for data. The meter reading device (15) then receives transmissions from the first meter interface unit (12) which are governed by a first transmission rule. The meter reading device (15) determines when at least a second meter interface unit (12) is operating in an active state, and transmits to the first meter interface unit (12), a second message including a specifier for a second transmission rule.

REFERENCES:
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patent: 4964121 (1990-10-01), Moore
patent: 4996526 (1991-02-01), Deluca
patent: 5109530 (1992-04-01), Stengel
patent: 5461558 (1995-10-01), Patsiokas et al.
patent: 5481259 (1996-01-01), Bane
patent: 5493287 (1996-02-01), Bane
patent: 5631636 (1997-05-01), Bane

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