Electricity meter with fault tolerant power supply
AssigneeLandis+Gyr Innovations, Inc.
InventorAnibal Diego Ramirez
Life of this patent
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Abstract
Techniques for implementing a fault-tolerant power supply are described. In an example, a system converts an alternating-current (AC) voltage to an initial direct current (DC) voltage. The system further converts the initial DC voltage to a first DC voltage and a second DC voltage. The system applies the first DC voltage to a high-priority device such as a metrology device. The system applies the second DC voltage to a low-priority or peripheral device. When the initial DC voltage is outside a voltage range, the system deactivates the second DC voltage to the lower-priority device and maintains the first DC voltage to the metrology device.
Claims20
A method of operating a fault-tolerant power supply, the method comprising:
- converting an alternating-current (AC) voltage to an initial direct current (DC) voltage;
- converting the initial DC voltage to a first DC voltage and a second DC voltage;
- applying the first DC voltage to a metrology device;
- applying the second DC voltage to a peripheral device;
- when the initial DC voltage is outside a voltage range, deactivating the second DC voltage to the peripheral device;
- and
- maintaining the first DC voltage to the metrology device.
A method of operating a fault-tolerant power supply, the method comprising:
- converting an alternating-current (AC) voltage to an initial direct current (DC) voltage;
- converting the initial DC voltage to a first DC voltage and a second DC voltage;
- applying the first DC voltage to a high-priority device;
- applying the second DC voltage to a low-priority device;
- when the initial DC voltage is outside a voltage range, deactivating the second DC voltage to the low-priority device;
- and
- maintaining the first DC voltage to the high-priority device.
A electric meter comprising:
- a power supply configured to convert an alternating-current (AC) voltage to an initial direct current (DC) voltage;
- a DC to DC converter configured to convert the initial DC voltage to a first DC voltage and a second DC voltage;
- and
- a host processor configured to:
- cause the DC to DC converter to apply the first DC voltage to a metrology device;
- cause the DC to DC converter to apply the second DC voltage to a peripheral device;
- and
- when the initial DC voltage is outside a voltage range, cause the DC to DC converter to deactivate the second DC voltage to the peripheral device and maintain the first DC voltage to the metrology device.
Dependencies are inferred from the claim text.