Method and system for radio-frequency signal coupling to medium tension power lines with auto-tuning device
First Claim
1. A method for dynamically tuning a power line communication system comprising an inductive coupler, a tank circuit comprising a plurality of capacitors, a first transmitter, and a receiver, said method comprising:
- installing said inductive coupler without a power outage;
passing a first selected carrier frequency signal generated by said first transmitter through said coupler;
receiving said first selected carrier frequency signal at said receiver;
measuring amplitude of said received first selected carrier frequency signal;
switching said capacitors in and out of said tank circuit until said measured amplitude of said received first selected carrier frequency signal is at a maximum;
passing a second selected carrier frequency signal generated by said first transmitter through said coupler;
receiving said second selected carrier frequency signal at said receiver;
measuring amplitude of said received second selected carrier frequency signal; and
switching said capacitors in and out of said tank circuit until said measured amplitude of said received second selected carrier frequency signal is at a maximum;
wherein said second selected carrier frequency signal is different from said first selected carrier frequency signal.
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Accused Products
Abstract
In one aspect, the present invention comprises a method for tuning a power line communication inductive signal coupling device comprising a coupler and a plurality of capacitors, the method comprising: passing a carrier frequency signal through the coupler; sensing an amplitude of the signal; and switching the capacitors until the amplitude of the signal reaches a maximum. In various embodiments: (a) the signal is transmitted by a second transmitter, and the method further comprises switching to a first transmitter for data transmission; (b) the signal is received by a receiver after passing through the coupler; and (c) the capacitors are switched by a relay controller receiving commands from a microprocessor.
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Citations
10 Claims
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1. A method for dynamically tuning a power line communication system comprising an inductive coupler, a tank circuit comprising a plurality of capacitors, a first transmitter, and a receiver, said method comprising:
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installing said inductive coupler without a power outage;
passing a first selected carrier frequency signal generated by said first transmitter through said coupler;
receiving said first selected carrier frequency signal at said receiver;
measuring amplitude of said received first selected carrier frequency signal;
switching said capacitors in and out of said tank circuit until said measured amplitude of said received first selected carrier frequency signal is at a maximum;
passing a second selected carrier frequency signal generated by said first transmitter through said coupler;
receiving said second selected carrier frequency signal at said receiver;
measuring amplitude of said received second selected carrier frequency signal; and
switching said capacitors in and out of said tank circuit until said measured amplitude of said received second selected carrier frequency signal is at a maximum;
wherein said second selected carrier frequency signal is different from said first selected carrier frequency signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of installing an inductive coupler, comprising:
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installing said inductive coupler on an insulated medium tension rated cable section;
installing said insulated medium tension rated cable section with inductive coupler installed in parallel with a section of distribution cable;
removing said section of distribution cable, thereby making a distribution cable line frequency current pass through said inductive coupler;
establishing communication between said inductive coupler and a transmitter and receiver;
establishing communication between said inductive coupler and a relay controller in communication with a microprocessor in communication with a plurality of capacitors; and
establishing communication between said inductive coupler and said plurality of capacitors in communication with said microprocessor.
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Specification