The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 2017
Filed:
Mar. 21, 2014
Texas Instruments Incorporated, Dallas, TX (US);
Sayyed Mahdi Kashmiri, Delft, NL;
Willem J. Kindt, Berkel en Rodenrijs, NL;
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Abstract
A fluxgate sensor including a magnetic-to-digital converter (MDC) can be adapted to measure an external magnetic field Bwith a bandwidth f. The MDC forward path can include: (a) converting an analog sense signal from the fluxgate sense coil to corresponding oversampled digital data using an oversampling data converter with an oversampling frequency fgreater than f; and (b) loop filtering the oversampled digital data, synchronous with the oversampling frequency f, to generate the loop output digital data. The MDC feedback path can include: (a) generating the feedback compensation current Ifrom the loop output digital data, synchronous with a feedback path frequency fequal to ((M/N)×f), where, M and N are integers; and (b) injecting the feedback compensation current Iinto the fluxgate compensation coil to induce the compensation field B, such that the induced compensation field Bnulls the external field B.