System, method and apparatus for one-pair power over ethernet in an automotive application
First Claim
Patent Images
1. A method, comprising:
- transmitting, by a power sourcing equipment, a forward path current to a powered device via a single conductor pair, a first portion of the forward path current carried over a first conductor of the single conductor pair and a second portion of the forward path current carried over a second conductor of the single conductor pair, and a return path current from the powered device to the power sourcing equipment carried by a chassis of an automotive vehicle,wherein the power sourcing equipment is coupled to a battery of the automotive vehicle, the battery connected to the chassis of the automotive vehicle, and the chassis connected to the powered device, andwherein a difference between a resistance of the chassis and a resistance of the single conductor pair provides a predetermined power loss attributable to a predetermined length of the single conductor pair.
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Abstract
System, method and apparatus for one-pair power over Ethernet in an automotive application. In one embodiment, a power sourcing equipment transmits a forward path current to a powered device via a single conductor pair and receives a return path current from the powered device via a chassis of an automotive vehicle.
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Citations
17 Claims
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1. A method, comprising:
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transmitting, by a power sourcing equipment, a forward path current to a powered device via a single conductor pair, a first portion of the forward path current carried over a first conductor of the single conductor pair and a second portion of the forward path current carried over a second conductor of the single conductor pair, and a return path current from the powered device to the power sourcing equipment carried by a chassis of an automotive vehicle, wherein the power sourcing equipment is coupled to a battery of the automotive vehicle, the battery connected to the chassis of the automotive vehicle, and the chassis connected to the powered device, and wherein a difference between a resistance of the chassis and a resistance of the single conductor pair provides a predetermined power loss attributable to a predetermined length of the single conductor pair. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A power sourcing equipment, comprising:
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a first port that is configured for coupling to a battery of an automotive vehicle, wherein the battery is connected to a chassis of the automotive vehicle, and the chassis is connected to a powered device; a second port that is configured for coupling to a single conductor pair; and control logic that is configured to control a delivery of power to the powered device via the single conductor pair, a first portion of a forward path current carried over a first conductor of the single conductor pair, a second portion of the forward path current carried over a second conductor of the single conductor pair, and a return path current from the powered device to the power sourcing equipment carried by the chassis of the automotive vehicle, wherein a difference between a resistance of the chassis and a resistance of the single conductor pair provides a predetermined power loss attributable to a predetermined length of the single conductor pair. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method, comprising:
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coupling a first port of a power sourcing equipment to a battery of an automotive vehicle, wherein the battery is connected to a chassis of the automotive vehicle, and the chassis is connected to a powered device; coupling a second port of the power sourcing equipment to a single conductor pair; and controlling a delivery of power from the power sourcing equipment to the powered device via the single conductor pair, a first portion of a forward path current carried over a first conductor of the single conductor pair, a second portion of the forward path current carried over a second conductor of the single conductor pair, and a return path current from the powered device to the power sourcing equipment carried by the chassis of the automotive vehicle, wherein a difference between a resistance of the chassis and a resistance of the single conductor pair provides a predetermined power loss attributable to a predetermined length of the single conductor pair. - View Dependent Claims (14, 15, 16, 17)
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Specification