Method and device for detecting a current
AssigneeSanyo Electric Co., Ltd.
InventorsMasaki Yugo, Minoru Gyoda, Hiroshi Egi
Life of this patent
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Abstract
In the method for detecting a current, the current is detected by a first current sensor in a predetermined sampling period as a digital value, and is detected by a second current sensor in a period longer than the first current sensor with high accuracy as a digital value. In the method for detecting a current, the current during detecting-incapable time period, which is incapable of detecting the current during detecting timing for detecting the current during the predetermined period by the second current sensor, is complemented with the current value detected by the first current sensor,
Claims16
A method for detecting a current comprising the steps of:
- detecting the current by a first current sensor with a predetermined sampling period as a digital value, and for detecting the current by a second current sensor with high accuracy with a period longer than the first current sensor as a digital value;
- and
- complementing the current during a detecting-incapable time period, which is incapable of detecting the current between detecting timings for detecting the current in the predetermined period by the second current sensor, with the current value detected by the first current sensor.
A device for detecting a current comprising:
- a first current sensor detecting the current with predetermined sampling period;
- and
- a second current sensor detecting the current with high accuracy with a period longer than the first current sensor;
- wherein the second current sensor detects the current with the predetermined period, and
- the current during a detecting-incapable time period, which is incapable of detecting the current by the second current sensor, is complemented with the current value detected by the first current sensor.
Dependencies are inferred from the claim text.