Information transmission over power lines
First Claim
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1. A method of transmitting data over lines of a power line network, comprising:
- inductively inducing substantially opposite polarity currents representing the data, on first and second lines of the network, at a first location along the lines; and
sensing the propagated currents from the first and second lines at a second location along the lines.
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Abstract
A method of transmitting data over lines of power line network comprising: inductively generating opposite polarity currents representing the data on first and second lines of a pair of lines of the network at a first location along the lines that propagate along the lines; and sensing the propagated currents at a second location along the lines.
137 Citations
72 Claims
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1. A method of transmitting data over lines of a power line network, comprising:
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inductively inducing substantially opposite polarity currents representing the data, on first and second lines of the network, at a first location along the lines; and
sensing the propagated currents from the first and second lines at a second location along the lines. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. Apparatus for transmitting a signal over first and second lines of a power line network, comprising:
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a first magnetic circuit adapted to inductively couple to the first line;
a second magnetic circuit adapted to inductively couple to the second line;
an input interface adapted to receive data for transmission; and
a signal circuit adapted to induce electrical signals representative of the received data in both the first and second magnetic circuits, with substantially opposite polarity, concurrently. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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63. Apparatus for transmitting a signal over a power line network, comprising:
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a first coupling circuit adapted to couple to a first line of the network;
a second coupling circuit adapted to couple to a second line of the network;
a signal circuit, including at least one two-terminal port, adapted to transmit or receive electrical signals representative of data transmitted on the first and second lines;
a first wire connected to a two-terminal port of the signal circuit and to the first coupling circuit, so as to transfer signals between the signal circuit and the first coupling circuit; and
a second wire connected to a two-terminal port of the signal circuit and to the second coupling circuit, so as to transfer signals between the signal circuit and the second coupling circuit. - View Dependent Claims (64, 65, 66, 67, 68, 69, 70, 71)
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72. A coupler for inductively coupling a circuit to an electrified line, the coupler comprising:
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a first part having a first segment of at least one core formed from a magnetically permeable material;
a second part having a second segment of the at least one core that matches the first segment;
a wire, electrically connected to the circuit, that loops around at least one segment of the at least one core at least once; and
a bolt coupled to the first and second parts turnable to separate the first and second parts from each other or close the first and second parts to each other so that the first and second segments of the at least one core meet and form a magnetic circuit that surrounds the line.
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Specification