Ultrasonic control and monitoring bus and method
First Claim
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1. A method of communicating between a plurality of power supplies coupled to a common output power bus and a controller, said method comprising transmitting and receiving sound waves between said controller and said power supplies.
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Abstract
An apparatus has a plurality of power supplies coupled to a common output power bus and a single controller. To avoid ground loops, interference, high cost, and line-of-sight operation, sound waves are used to communicate between the controller and the power supplies. The sound waves are preferably of at least 18 KHz in frequency and preferably FSK modulated with control or data information.
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15 Claims
- 1. A method of communicating between a plurality of power supplies coupled to a common output power bus and a controller, said method comprising transmitting and receiving sound waves between said controller and said power supplies.
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5. Apparatus comprising:
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a plurality of power supplies coupled to a common output power bus; and
a controller, each of said power supplies and said controller comprising an interface transmitting and receiving sound waves between said controller and said power supplies for communication therebetween. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. Apparatus comprising:
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a plurality of power supplies adapted to be coupled to a common AC input power bus and a common DC output power bus, each of said supplies including an AC-to-DC converter;
a controller;
each of said supplies and said controller comprising an interface transmitting and receiving FSK modulated sound waves of at least 18 KHz frequency between said controller to said supplies for communication of data signals from said supplies to said controller and command signals from said controller to at least one of said supplies.
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Specification