H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 5/00 (2006.01) G01D 4/00 (2006.01) G01R 21/133 (2006.01) G01R 22/00 (2006.01) G08C 17/04 (2006.01)
Patent
CA 2142947
An electronic meter reader having a transmitter and antenna for inductively transmitting alternating current power in any selected one of a plurality of frequencies. The reader further includes a receiver for inductively receiving meter reading data from the meter being read represented by a load modulation of the transmitted frequency. A bandpass filter limits the bandwidth of the modulation frequency. The power transmitted by the transmitter may also be used by the meter to generate and transmit data representative of the meter reading back to the reader. A second receiver is also provided for inductively receiving reading data from the meter in the form of a modulated frequency generated by the meter. The reader includes a microprocessor and program which control the generation of a plurality of interrogation signal formats, and which decode a plurality of received data formats.
Ridout & Maybee Llp
Syscon Corporation
LandOfFree
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