System for automatic meter reading

A fixed network AMR system that has a range from the meter (4) to the node (6) of up to 5 km uses a common reference source (2) for the frequency reference of the meter transmitter (12) and the system receiver (18). By using a publicly available reference frequency the necessary frequency stability...

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Bibliographische Detailangaben
1. Verfasser:	GILES TERENCE GEORGE
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS SIGNALLING TARIFF METERING APPARATUS TESTING TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILARSIGNALS
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Beschreibung
Zusammenfassung:	A fixed network AMR system that has a range from the meter (4) to the node (6) of up to 5 km uses a common reference source (2) for the frequency reference of the meter transmitter (12) and the system receiver (18). By using a publicly available reference frequency the necessary frequency stability can be obtained in order to provide a signal to noise bandwidth of the order of 32 Hz.