Communication device using power line communication and frequency-division multiplexing on a pilot line, and related systems
First Claim
1. A power line communication device for a first system adapted to be coupled to a second system via a power cable comprising a pilot line having a first impedance, which encounters at least second and third impedances and through which flows a first analog signal in a first frequency band;
- wherein the device is arranged i) to generate from a local digital signal a second analog power line communication signal having frequencies comprised in a second frequency band overlapping as little as possible said first frequency band, ii) to feed said pilot line with said second analog signal via capacitive means, and iii) to extract analog signals passing through said pilot line each second analog signal to convert it into a digital signal to be processed by said first system; and
wherein the device comprises i) conversion means adapted to convert an analog signal into a digital signal and vice-versa, ii) a first generation means adapted to generate each second analog signal from a local analog signal provided by said conversion means and to feed said capacitive means with each second analog signal generated, (iii) a first filtering means adapted to extract each second analog signal from the analog signal passing through said pilot line, and (iv) a second generation means adapted to generate from each second extracted analog signal an analog signal to be converted into a digital signal by said conversion means for its processing by said first system.
1 Assignment
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Accused Products
Abstract
The invention relates to a communication device using power line communication provided in a first system coupled to a second system via a power cable comprising a pilot line having a first impedance, which encounters at least second and third impedances and through which a first analog signal passes in a first frequency band. The device is arranged so as to: i) generate, from a local digital signal, a second analog power line communication signal having frequencies included in a second frequency band that has minimal overlap with the first frequency band; ii) supply the second analog signal to the pilot line via a capacitive means and iii) extract, from the analog signals passing through the pilot line, each second analog signal in order to convert the latter into a digital signal to be processed by the system.
13 Citations
15 Claims
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1. A power line communication device for a first system adapted to be coupled to a second system via a power cable comprising a pilot line having a first impedance, which encounters at least second and third impedances and through which flows a first analog signal in a first frequency band;
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wherein the device is arranged i) to generate from a local digital signal a second analog power line communication signal having frequencies comprised in a second frequency band overlapping as little as possible said first frequency band, ii) to feed said pilot line with said second analog signal via capacitive means, and iii) to extract analog signals passing through said pilot line each second analog signal to convert it into a digital signal to be processed by said first system; and wherein the device comprises i) conversion means adapted to convert an analog signal into a digital signal and vice-versa, ii) a first generation means adapted to generate each second analog signal from a local analog signal provided by said conversion means and to feed said capacitive means with each second analog signal generated, (iii) a first filtering means adapted to extract each second analog signal from the analog signal passing through said pilot line, and (iv) a second generation means adapted to generate from each second extracted analog signal an analog signal to be converted into a digital signal by said conversion means for its processing by said first system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system suited to be coupled to a second system via a power cable comprising a pilot line having a first impedance, which encounters at least second and third impedances and through which flows a first analog signal in a first frequency band, wherein the system comprises a power line communication device which is adapted to be coupled to said pilot line;
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wherein said power line communication device is arranged i) to generate from a local digital signal a second analog power line communication signal having frequencies comprised in a second frequency band overlapping as little as possible said first frequency band, ii) to feed said pilot line with said second analog signal via capacitive means and iii) to extract analog signals passing through said pilot line each second analog signal to convert it into a digital signal to be processed by said first system; and wherein the system comprises at least a part of a recharge terminal and generation means configured to generate said first analog signal;
said generation means being arranged to generate a first analog signal of the so-called “
Pulse Width Modulation”
type and in which said pulse width is representative of the maximum value of a current that said recharge terminal is capable of providing. - View Dependent Claims (10, 11, 12)
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13. A system suited to be coupled to a second system via a power cable comprising a pilot line having a first impedance, which encounters at least second and third impedances and through which flows a first analog signal in a first frequency band, wherein the system comprises a power line communication device which is adapted to be coupled to said pilot line;
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wherein said power line communication device is arranged i) to generate from a local digital signal a second analog power line communication signal having frequencies comprised in a second frequency band overlapping as little as possible said first frequency band, ii) to feed said pilot line with said second analog signal via capacitive means and iii) to extract analog signals passing through said pilot line each second analog signal to convert it into a digital signal to be processed by said first system; and wherein the system comprises at least a part of a vehicle, and that the system comprises a management means configured to extract from the analog signals flowing through said pilot line each first analog signal in order to deduct from the latter the maximum value of a current that said second system is capable of providing to said system and to authorize or prohibit this provision of current at least on the basis of this deducted maximum value. - View Dependent Claims (14, 15)
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Specification