JP7360502B2 - 磁気センサにおける漂遊場拒絶 - Google Patents
磁気センサにおける漂遊場拒絶 Download PDFInfo
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- JP7360502B2 JP7360502B2 JP2022080998A JP2022080998A JP7360502B2 JP 7360502 B2 JP7360502 B2 JP 7360502B2 JP 2022080998 A JP2022080998 A JP 2022080998A JP 2022080998 A JP2022080998 A JP 2022080998A JP 7360502 B2 JP7360502 B2 JP 7360502B2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/0017—Means for compensating offset magnetic fields or the magnetic flux to be measured; Means for generating calibration magnetic fields
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/025—Compensating stray fields
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/0023—Electronic aspects, e.g. circuits for stimulation, evaluation, control; Treating the measured signals; calibration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/0023—Electronic aspects, e.g. circuits for stimulation, evaluation, control; Treating the measured signals; calibration
- G01R33/0035—Calibration of single magnetic sensors, e.g. integrated calibration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/0023—Electronic aspects, e.g. circuits for stimulation, evaluation, control; Treating the measured signals; calibration
- G01R33/0041—Electronic aspects, e.g. circuits for stimulation, evaluation, control; Treating the measured signals; calibration using feed-back or modulation techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/007—Environmental aspects, e.g. temperature variations, radiation, stray fields
- G01R33/0082—Compensation, e.g. compensating for temperature changes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/07—Hall effect devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Toxicology (AREA)
- Measuring Magnetic Variables (AREA)
Description
10 基準場センサ
12 基準電流源(供給部)
14 基準センサ信号
20 較正済み場センサ
22 調整可能な電流源(供給部)
24 較正済みセンサ信号
30 制御回路
32 電流制御回路
34 比較器回路
36 変換器回路
80 ワイヤ
99 場センサデバイス
100 場センサデバイスを構築するステップ
110 較正場を提供するステップ
120 基準センサ信号と較正済みセンサ信号とを比較するステップ
130 整合をテストするステップ
140 較正済み場センサバイアス電流を調整するステップ
150 場センサデバイスを顧客に販売し、それを動作させるステップ
160 勾配を計算する任意選択のステップ
170 信号を組み合わせる任意選択のステップ
180 信号を出力するステップ
Claims (10)
- 場センサデバイスの基準場センサ(10)と較正済み場センサ(20)との両方に、均一な較正場が提供される場センサデバイスであって、
前記基準場センサ(10)は基準電流でバイアスされて、場に応答して基準センサ信号(14)を提供し、
前記較正済み場センサ(20)は調整可能な電流でバイアスされて、前記場に応答して較正済みセンサ信号(24)を提供し、
前記場センサデバイスは、
前記基準センサ信号(14)と前記較正済みセンサ信号(24)とを比較する制御回路(30)を備え、
前記制御回路(30)は、前記基準センサ信号(14)と前記較正済みセンサ信号(24)とが実質的に等しくない場合、前記比較することを受けて、調整済み電流で前記較正済み場センサ(20)にバイアスをかけ、前記較正済みセンサ信号(24)が前記基準センサ信号(14)に実質的に等しくなるまで、前記比較することと、前記バイアスをかけることとを繰り返す、場センサデバイス。 - 複数の較正済み場センサを備える、請求項1に記載の場センサデバイス。
- 前記場が磁場である、請求項1又は2に記載の場センサデバイス。
- 前記基準場センサと1つまたは複数の前記較正済み場センサとが、共通の基準電圧においてバイアスがかけられている、請求項1~3のうちのいずれか1つに記載の場センサデ
バイス。 - 前記基準電流を提供するように構成された基準電流源と、前記調整可能な電流を提供するための調整可能な電流源とを備える、請求項1~4のうちのいずれか1つに記載の場センサデバイス。
- 前記基準センサ信号を前記較正済みセンサ信号と比較する比較器を備える、請求項1~5のうちのいずれか1つに記載の場センサデバイス。
- 前記基準場センサ、前記較正済み場センサ、もしくは前記基準場センサと前記較正済み場センサとの両方がデジタルセンサであるか、または、前記基準センサ信号、前記較正済みセンサ信号、もしくは前記基準センサ信号と前記較正済みセンサ信号との両方がデジタル信号である、請求項1~6のうちのいずれか1つに記載の場センサデバイス。
- 前記基準センサ信号、前記較正済みセンサ信号、または前記基準センサ信号と前記較正済みセンサ信号との両方を、デジタル信号に変換するための変換器を備える、請求項1~7のうちのいずれか1つに記載の場センサデバイス。
- 前記較正済み場センサが前記基準センサ信号にほぼ等しい較正済みセンサ信号を提供するように、前記基準電流とは異なる較正済み電流において、前記較正済み場センサの前記調整可能な電流バイアスを制御するように構成された制御回路を備える、請求項1~8のうちのいずれか1つに記載の場センサデバイス。
- 請求項1~9のうちのいずれか1つに記載の場センサデバイスにおいて、
前記制御回路は、
前記基準場センサ(10)、前記較正済み場センサ(20)、または前記基準場センサと前記較正済み場センサとの両方に、動作場を提供し、
前記基準センサ信号(14)、前記較正済みセンサ信号(24)、前記基準センサ信号と前記較正済みセンサ信号との両方、または前記基準センサ信号と前記較正済みセンサ信号との組み合わせを出力する、場センサデバイス。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17190942.7A EP3457154B1 (en) | 2017-09-13 | 2017-09-13 | Stray field rejection in magnetic sensors |
EP17190942.7 | 2017-09-13 | ||
JP2018155098A JP7130492B2 (ja) | 2017-09-13 | 2018-08-22 | 磁気センサにおける漂遊場拒絶 |
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JP2018155098A Division JP7130492B2 (ja) | 2017-09-13 | 2018-08-22 | 磁気センサにおける漂遊場拒絶 |
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JP2022103310A JP2022103310A (ja) | 2022-07-07 |
JP7360502B2 true JP7360502B2 (ja) | 2023-10-12 |
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JP2018155098A Active JP7130492B2 (ja) | 2017-09-13 | 2018-08-22 | 磁気センサにおける漂遊場拒絶 |
JP2022080998A Active JP7360502B2 (ja) | 2017-09-13 | 2022-05-17 | 磁気センサにおける漂遊場拒絶 |
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US (4) | US10809314B2 (ja) |
EP (1) | EP3457154B1 (ja) |
JP (2) | JP7130492B2 (ja) |
KR (1) | KR102385072B1 (ja) |
CN (1) | CN109490797B (ja) |
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EP3885778B1 (en) * | 2020-03-23 | 2024-02-07 | Melexis Technologies SA | Position sensor devices, methods and systems based on magnetic field gradients |
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US20230341479A1 (en) | 2023-10-26 |
EP3457154B1 (en) | 2020-04-08 |
CN109490797B (zh) | 2021-11-09 |
KR20190030171A (ko) | 2019-03-21 |
US11719763B2 (en) | 2023-08-08 |
EP3457154A1 (en) | 2019-03-20 |
JP2022103310A (ja) | 2022-07-07 |
KR102385072B1 (ko) | 2022-04-08 |
US12078689B2 (en) | 2024-09-03 |
US20190079142A1 (en) | 2019-03-14 |
JP7130492B2 (ja) | 2022-09-05 |
US20200408853A1 (en) | 2020-12-31 |
JP2019053048A (ja) | 2019-04-04 |
US11435413B2 (en) | 2022-09-06 |
US10809314B2 (en) | 2020-10-20 |
US20220365147A1 (en) | 2022-11-17 |
CN109490797A (zh) | 2019-03-19 |
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