Methods and system for increasing data transmission rates across a three-phase power system
First Claim
1. A method for providing information by optimizing a data rate to a vehicle over a single three-phase power line utilized to provide power to the vehicle, said method comprising:
- assigning three separate frequency bands to three respective conductors extending between a ground power system and the vehicle, the three respective conductors forming the three-phase power line;
generating carrier signals in the three separate frequency bands, wherein the three separate frequency bands are between about 2 MHz and about 80 MHz;
modulating various data onto the three carrier signals to generate three transmission signals for sending the various data from the ground power system to the vehicle at frequencies within respective ones of the three separate frequency bands, wherein the frequencies for each of the three separate frequency bands do not overlap one another;
switching the three transmission signals onto respective conductors of the three-phase power line;
monitoring an impedance of each conductor;
adjusting the frequencies for each conductor based on changes in the monitored impedance;
demodulating the various data within the vehicle;
providing the various data to one or more vehicle systems.
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Accused Products
Abstract
A method for providing information by optimizing the data rate to a vehicle over a three-phase power line utilized to provide power to the vehicle is described. The method includes generating carrier signals in three separate frequency bands, modulating various data onto the three carrier signals to generate three transmission signals, switching the three transmission signals onto respective conductors of the three-phase power line, demodulating the various data within the vehicle, and providing the various data to one or more vehicle systems. The three transmission signals are dynamically monitored such that the three frequency bands are controlled to optimize a data rate of the transmission.
31 Citations
19 Claims
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1. A method for providing information by optimizing a data rate to a vehicle over a single three-phase power line utilized to provide power to the vehicle, said method comprising:
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assigning three separate frequency bands to three respective conductors extending between a ground power system and the vehicle, the three respective conductors forming the three-phase power line; generating carrier signals in the three separate frequency bands, wherein the three separate frequency bands are between about 2 MHz and about 80 MHz; modulating various data onto the three carrier signals to generate three transmission signals for sending the various data from the ground power system to the vehicle at frequencies within respective ones of the three separate frequency bands, wherein the frequencies for each of the three separate frequency bands do not overlap one another; switching the three transmission signals onto respective conductors of the three-phase power line; monitoring an impedance of each conductor; adjusting the frequencies for each conductor based on changes in the monitored impedance; demodulating the various data within the vehicle; providing the various data to one or more vehicle systems. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A data communication system comprising:
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a transmission medium comprising a single three-phase power line comprising a conductor associated with each respective phase; a controller operable to; assign three separate frequency bands to three respective conductors extending between a ground power system and a vehicle, the three respective conductors forming the three-phase power line; generate multiple carrier frequencies in respective one of the three separate frequency bands, wherein the three separate frequency bands are between about 2 MHz and about 80 MHz; separate data for transmission across said transmission medium into a plurality of separate data packages; modulate the plurality of separate data packages at frequencies within respective ones of the three separate frequency bands to send the plurality of separate data packages from the ground power system to the vehicle, wherein the frequencies for each of the three separate frequency bands do not overlap one another; monitor an impedance of each conductor; and adjust the frequencies for each conductor based on changes in the monitored impedance. - View Dependent Claims (12, 13, 14, 18, 19)
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15. A system for transmission of broadband signals over a single three-phase power line, said system comprising:
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a three-phase power system; a three-phase power line comprising a plurality of conductors, said power line operable for transfer of three-phase power generated by said three-phase power system to a load via said conductors; a data source; a controller communicatively coupled to said data source and programmed to configure data received from said data source into data packages for transmission along said three-phase power line from a ground power system to a vehicle; a modulation signal source, said controller further configured to associate a modulation frequency range with each said conductor, a different modulation frequency range for each of the conductors such that the modulation frequency ranges do not overlap one another, wherein the modulation frequency ranges are between about 2 MHz and about 80 MHz; and a modulation device operable for modulating data packages from said controller onto one or more of said conductors using the modulation signal associated with the conductor to send the data packages from the ground power system to the vehicle, said controller programmed to assign the data packages for modulation onto a specific one of conductors based on a data rate associated with said three-phase power line, said controller further programmed to monitor an impedance of each conductor, and adjust the frequencies for each conductor based on changes in the monitored impedance. - View Dependent Claims (16, 17)
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Specification