US 2026/0309810 A1 · POSITIONALLY-ROBUST CURRENT SENSORS

Abstract

Examples described herein provide current sensors for sensing current flow in a conductor. An example current sensor includes a substrate, a first magnetic field sensing element mechanically connected to the substrate at a first measurement position, and a second magnetic field sensing element mechanically connected to the substrate at a second measurement position. The first magnetic field sensing element and the second magnetic field sensing element measure a magnetic field induced by current flow in the conductor in two non-equivalent measurement positions. The current sensor includes an electronic processor configured to receive a first signal from the first magnetic field sensing element and receive a second signal from the second magnetic field sensing element. The electronic processor is also configured to determine a relative position between the conductor and the substrate and generate an output signal indicative of the current flow in the conductor based on the relative position.

Claims20

Dependent claims

A current sensor for sensing current flow in a conductor, the current sensor comprising:

a substrate;
a first magnetic field sensing element mechanically connected to the substrate at a first measurement position;
a second magnetic field sensing element mechanically connected to the substrate at a second measurement position;
wherein the first magnetic field sensing element and the second magnetic field sensing element measure a magnetic field induced by current flow in the conductor in two non-equivalent measurement positions;
and
an electronic processor connected to the first magnetic field sensing element and the second magnetic field sensing element, the electronic processor configured to:
receive a first signal from the first magnetic field sensing element,
receive a second signal from the second magnetic field sensing element,
determine a relative position between the conductor and the substrate based on the first signal, the second signal, and a predicted measurement value or a quantity derived from the predicted measurement value, and
generate an output signal indicative of the current flow in the conductor based on the relative position.

7 more elements

A method for correcting an output signal of a current sensor, the method comprising:

receiving a first signal from a first magnetic field sensing element;
receiving a second signal from a second magnetic field sensing element, wherein the first magnetic field sensing element and the second magnetic field sensing element measure a magnetic field induced by current flow in a conductor in two non-equivalent measurement positions, and wherein the first magnetic field sensing element and the second magnetic field sensing element are each connected to a substrate;
determining a relative position between the conductor and the substrate based on the first signal, the second signal, and a predicted measurement value or a quantity derived from the predicted measurement value;
and
generating an output signal indicative of the current flow in the conductor based on the relative position.

2 more elements

Dependencies are inferred from the claim text.

Positionally-robust current sensors

Life of this patent

Positionally-robust current sensors

Life of this patent

Abstract

Claims20