Sensor coil optimization

Patent metadata

Field	Value
Publication number	US-10585149-B2
Application number	US-201916290472-A
Country	US
Kind code	B2
Filing date	Mar 1, 2019
Priority date	Nov 1, 2017
Publication date	Mar 10, 2020
Grant date	Mar 10, 2020

Abstract

In some embodiments, optimizing a coil design is provided. In particular, a method of providing an optimized position locating sensor coil design includes receiving a coil design, the coil design including geometric positions of a transmit coil and geometric positions of receive coils; linearizing one or more of the receive coils; and offset compensating the one or more of the receive coils. The linearization determines a geometric correction array for adjusting the geometric position of one of the receive coils. The offset correction includes determining a geometric shift to shift the geometric position of the one of the receive coils.

First claim

What is claimed is:

1. A method of providing an optimized position locating sensor coil design, comprising:
receiving a coil design, the coil design including geometric positions of a transmit coil and geometric positions of receive coils;
linearizing one or more of the receive coils, wherein linearizing the receive coils includes
simulating a function of one of the receive coils as a function of target position,
determining a difference between the function and an ideal function of the one of the receive coils,
converting the difference to a geometric variation, and
applying a geometric variation to the geometric position of the receive coil; and

offset compensating the one or more of the receive coils, wherein offset compensating the receive coils includes
determining a simulated offset by simulating an output of one of the receive coils in the absence of a target;
determining an offset adjustment based on the output; and
adjusting the one of the receive coils according to the offset adjustment.

2. The method of claim 1 , wherein the receive coils include a sine receive coil and a cosine receive coil.

3. The method of claim 1 , wherein the function is a sine function.

4. The method of claim 1 , wherein the function is a cosine function.

5. The method of claim 1 , wherein the geometric variation is an array given by a geometric variation over the receive coil.

6. The method of claim 1 , wherein the offset adjustment is a constant shift over the one of the receive coils.

7. The method of claim 1 , wherein the offset adjustment includes finding an offset of the difference.

Assignees

• Integrated Device Tech

Inventors

• Qama Gentjan

Classifications

• G01D5/2053 Primary

  by a movable non-ferromagnetic conductive element · CPC title

• G06F30/398

  Design verification or optimisation, e.g. using design rule check [DRC], layout versus schematics [LVS] or finite element methods [FEM] (optical proximity correction [OPC] design processes G03F1/36) · CPC title

• G06F30/36

  Circuit design at the analogue level · CPC title

• G06F30/392

  Floor-planning or layout, e.g. partitioning or placement · CPC title

• H05K1/165

  incorporating printed inductors · CPC title