Apparatus of current measurement having variable tuning precision capability
AssigneeITX-AI Co., Ltd.
InventorsKi Chul Hong, Ki Seok Kim
Life of this patent
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Abstract
Provided is a current sensor having variable tuning precision capability depending on an amount of a current to be measured, a system state and the like. In the present disclosure, the current measurement apparatus having variable tuning precision capability does not separately require a current sensor measuring a small current with high precision and a current sensor stably measuring a large current without saturation. In the present disclosure, a single current measurement apparatus may vary current measurement precision depending on a current magnitude and the like, and may thus measure the small current with the high precision and stably measure the large current without saturation.
Claims15
A current measurement apparatus having variable tuning precision capability, the apparatus comprising:
- a hall element provided in a gap formed in a core and outputting a hall voltage by a hall effect;
- a variable current source applying a current variably to an input terminal of the hall element;
- an output voltage measurer generating a signal based on the hall voltage which is an output voltage output from an output terminal of the hall element;
- and
- a controller including a corrector calculating a current to be measured based on an output signal of the output voltage measurer and then correcting the current to be measured based on at least one of an output current of the variable current source and temperature information of the hall element.
Dependencies are inferred from the claim text.