| 摘要 |
A battery-powered two-way long range automatic meter reading system and method that increases battery longevity. The system includes a meter side unit (MSU) transceiver that acquires utility data, a centralized data collector (Collector) that gathers data from the MSU, and a repeater to facilitate long-range transmission by shuttling radio signals around physical or geographic transmission barriers. The MSU includes a circuit to monitor the passage of time and apply power to a transmitter in response to a predetermined elapsed period of time. The MSU transceiver monitors a predetermined radio channel for traffic. In response to the predetermined radio channel being essentially clear of signal traffic, the MSU sends utility data to the collector. The MSU scans for a reply from the collector. In response to the collector having control data to transmit to the MSU, the collector transmits this control data in response to receiving a transmission from the MSU. The MSU is configured to enter a sleep mode. In response to receiving commands from the collector, the MSU is configured to perform the commands.
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