Method and apparatus for load identification
First Claim
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1. Apparatus for operating a load device powered by a power supply unit (PSU) comprising:
- a load communication device that identifies and transmits to the PSU a load requirement to operate the load device that is powered by the PSU, said load requirement being identified by analyzing the characteristics of current applied to the load device by a given input voltage generated by the PSU, wherein the apparatus is adapted to identify the load requirement in the form of a suitable voltage level for the load device by applying successive standard voltage levels with a zero voltage reset in between, the standard voltage levels being applied for a period of time long enough to address a transient behaviour of load current and by identifying one or more patterns of the load current in order to identify the load requirement.
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Abstract
A load communication device and method is provided, that identifies and transmits to a PSU the load requirement to operate a load device that is powered by the PSU, by analyzing the characteristics of current applied to the load device by a given input voltage generated by the PSU. The load communication device is configured to transmit between the PSU and the load device solely over the 2 wire cable that extends between the PSU and the load device.
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Citations
22 Claims
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1. Apparatus for operating a load device powered by a power supply unit (PSU) comprising:
- a load communication device that identifies and transmits to the PSU a load requirement to operate the load device that is powered by the PSU, said load requirement being identified by analyzing the characteristics of current applied to the load device by a given input voltage generated by the PSU, wherein the apparatus is adapted to identify the load requirement in the form of a suitable voltage level for the load device by applying successive standard voltage levels with a zero voltage reset in between, the standard voltage levels being applied for a period of time long enough to address a transient behaviour of load current and by identifying one or more patterns of the load current in order to identify the load requirement.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. Method for identifying and transmitting to a power supply unit (PSU) a load requirement to operate a load device that is powered by the PSU, comprising
a) providing communication between a load communication device and the PSU, and, for identifying the load requirement, the load communication device analyzes the characteristics of current applied to the load device by a given input voltage generated by the PSU, and b) the load communication device transmitting to the PSU the load requirement to operate the load device that is powered by the PSU, wherein the load requirement in form of a suitable voltage level for the load device is identified by applying successively standard voltage levels with zero voltage reset in between, the standard voltage levels being applied for a period long enough to address a transient behaviour of a load current, and by identifying patterns of the load current.
Specification