Magnetic sensor control device
First Claim
Patent Images
1. A magnetic sensor control device comprising:
- an input section that inputs a plurality of magnetic data having 3 components sequentially output from a 3-dimensional (3D) magnetic sensor;
a buffer that stores the plurality of the input magnetic data;
a selection section that selects 4 magnetic data satisfying a predetermined 4-point selection condition from the plurality of the input magnetic data, wherein the selection section selects (n−
1)th magnetic data satisfying a predetermined selection condition before selecting nth (n=2, 3, or
4) magnetic data, then obtains magnetic data, which has not been selected as any of up to the (n−
1)th magnetic data, from the buffer, and sets the obtained magnetic data as a candidate for selection of the nth magnetic data;
a calculation section that calculates a center point equally distant from 4 points each represented by 3 components of a corresponding one of the 4 selected magnetic data; and
a setting section that sets 3 components representing the center point as an offset of the magnetic data.
0 Assignments
0 Petitions
Accused Products
Abstract
A magnetic sensor control device has an input section, a selection section, a calculation section, and a setting section. The input section inputs a plurality of magnetic data each having 3 components sequentially output from a 3-dimensional (3D) magnetic sensor. The selection section selects 4 magnetic data satisfying a predetermined 4-point selection condition from the plurality of the input magnetic data. The calculation section calculates a center point equally distant from 4 points corresponding to the 4 selected magnetic data. The setting section sets 3 components representing the center point as an offset of the magnetic data.
-
Citations
20 Claims
-
1. A magnetic sensor control device comprising:
-
an input section that inputs a plurality of magnetic data having 3 components sequentially output from a 3-dimensional (3D) magnetic sensor; a buffer that stores the plurality of the input magnetic data; a selection section that selects 4 magnetic data satisfying a predetermined 4-point selection condition from the plurality of the input magnetic data, wherein the selection section selects (n−
1)th magnetic data satisfying a predetermined selection condition before selecting nth (n=2, 3, or
4) magnetic data, then obtains magnetic data, which has not been selected as any of up to the (n−
1)th magnetic data, from the buffer, and sets the obtained magnetic data as a candidate for selection of the nth magnetic data;a calculation section that calculates a center point equally distant from 4 points each represented by 3 components of a corresponding one of the 4 selected magnetic data; and a setting section that sets 3 components representing the center point as an offset of the magnetic data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A magnetic measurement apparatus comprising:
-
a 3-dimensional (3D) magnetic sensor that sequentially outputs a plurality of magnetic data each having 3 components; an input section that inputs the plurality of the magnetic data having 3 components sequentially output from the 3-dimensional magnetic sensor; a buffer that stores the plurality of the input magnetic data; a selection section that selects 4 magnetic data satisfying a predetermined 4-point selection condition from the plurality of the input magnetic data, wherein the selection section selects (n−
1)th magnetic data satisfying a predetermined selection condition before selecting nth (n=2, 3, or
4) magnetic data, then obtains magnetic data, which has not been selected as any of up to the (n−
1)th magnetic data, from the buffer, and sets the obtained magnetic data as a candidate for selection of the nth magnetic data;a calculation section that calculates a center point equally distant from 4 points each represented by 3 components of a corresponding one of the 4 selected magnetic data; and a setting section that sets 3 components representing the center point as an offset of the magnetic data.
-
-
19. A computer-implemented method for offset setting for magnetic sensors, the method comprising:
-
inputting a plurality of magnetic data having 3 components sequentially output from a 3-dimensional (3D) magnetic sensor; storing the plurality of the input magnetic data in a buffer; selecting 4 magnetic data satisfying a predetermined 4-point selection condition from the plurality of the input magnetic data, wherein the step of selecting selects (n−
1)th magnetic data satisfying a predetermined selection condition before selecting nth (n=2, 3, or
4) magnetic data, then obtains magnetic data, which has not been selected as any of up to the (n−
1)th magnetic data, from the buffer, and sets the obtained magnetic data as a candidate for selection of the nth magnetic data;calculating a center point equally distant from 4 points each represented by 3 components of a corresponding one of the 4 selected magnetic data; and setting 3 components representing the center point as an offset of the magnetic data.
-
-
20. A computer-readable recording medium containing an offset setting program for magnetic sensors, the program being executable by a computer to perform a method comprising:
-
inputting a plurality of magnetic data having 3 components sequentially output from a 3-dimensional (3D) magnetic sensor; storing the plurality of the input magnetic data in a buffer; selecting 4 magnetic data satisfying a predetermined 4-point selection condition from the plurality of the input magnetic data, wherein the step of selecting selects (n−
1)th magnetic data satisfying a predetermined selection condition before selecting nth (n=2, 3, or
4) magnetic data, then obtains magnetic data, which has not been selected as any of up to the (n−
1)th magnetic data, from the buffer, and sets the obtained magnetic data as a candidate for selection of the nth magnetic data;calculating a center point equally distant from 4 points each represented by 3 components of a corresponding one of the 4 selected magnetic data; and setting 3 components of the center point as an offset of the magnetic data.
-
Specification