IP Library Granted Patent US 7,495,430
Granted Patent B2
US 7,495,430 · App. 11/506,988 · Granted Feb 24, 2009

MEMS based current sensor using magnetic-to-mechanical conversion and reference components

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Quick Facts
Patent No.
US 7,495,430
App. No.
11/506,988
Granted
Feb 24, 2009
Kind
B2
Abstract

A micro-electromechanical system (MEMS) current sensor is described as including a first conductor, a magnetic field shaping component for shaping a magnetic field produced by a current in the first conductor, and a MEMS-based magnetic field sensing component including a magneto-MEMS component for sensing the shaped magnetic field and, in response thereto, providing an indication of the current in the first conductor. A method for sensing a current using MEMS is also described as including shaping a magnetic field produced with a current in a first conductor, sensing the shaped magnetic field with a MEMS-based magnetic field sensing component having a magneto-MEMS component magnetic field sensing circuit, and providing an indication of the current in the first conductor.

Claims (13)

1. A method for sensing a current using a micro-electromechanical system (MEMS), comprising:

shaping a magnetic field produced with a current in a first conductor;

sensing the shaped magnetic field with a MEMS-based magnetic field sensing component having a magneto-MEMS component magnetic field sensing circuit; and

providing an indication of the current in the first conductor.

2. The method of claim 1 , further comprising controlling a function of the MEMS-based magnetic field sensing component.

3. The method of claim 2 , wherein said controlling step comprises controlling at least one of the group consisting of an application of an excitation signal from an excitation source to the MEMS-based magnetic field sensing component, and a selection of an excitation signal from among a plurality of excitation sources.

4. The method of claim 1 , further comprising:

converting a mechanical change signal to an electrical signal representative thereof; and

providing the electrical signal as an output signal indicative of the current in the first conductor.

5. The method of claim 1 , further comprising mechanically supporting the magneto-MEMS component.

6. The method of claim 1 , wherein said sensing step comprises sensing with a mechanical sense component a mechanical indication of the shaped magnetic field.

7. The method of claim 6 , further comprising providing with a transducer a detectable measure and induced by the magneto-MEMS component.

8. The method of claim 6 , further comprising providing with a reference component a reference indicator for the mechanical indication.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 16, 2023
From: ABB SCHWEIZ AG
To: ABB S.P.A.
Reel/Frame 064006/0816 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 17, 2020
From: GENERAL ELECTRIC COMPANY
To: ABB SCHWEIZ AG
Reel/Frame 052431/0538 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 8, 2018
From: BERKCAN, ERTUGRUL; KAPUSTA, CHRISTOPHER JAMES; CLAYDON, GLENN SCOTT; ZRIBI, ANIS; MEYER, LAURA JEAN; TIAN, WEI-CHENG
To: GENERAL ELECTRIC COMPANY
Reel/Frame 044562/0483 →