KR20180084484A - 주파수 변조를 이용한 인덕턴스방식의 변위센서 - Google Patents
주파수 변조를 이용한 인덕턴스방식의 변위센서 Download PDFInfo
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- KR20180084484A KR20180084484A KR1020170008157A KR20170008157A KR20180084484A KR 20180084484 A KR20180084484 A KR 20180084484A KR 1020170008157 A KR1020170008157 A KR 1020170008157A KR 20170008157 A KR20170008157 A KR 20170008157A KR 20180084484 A KR20180084484 A KR 20180084484A
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- Prior art keywords
- frequency
- excitation coil
- displacement sensor
- converter
- frequency modulation
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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
- G01D5/20—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 by varying inductance, e.g. by a movable armature
- G01D5/22—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 by varying inductance, e.g. by a movable armature differentially influencing two coils
- G01D5/225—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 by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the mutual induction between the two coils
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
본 발명은 출력에 포함되는 교류 신호를 제거하여 출력의 정확도를 향상시키는 것이 가능한 주파수 변조를 이용한 인덕턴스방식의 변위센서를 제공한다
본 발명의 주파수 변조를 이용한 인덕턴스방식의 변위센서는 각각 설정된 주파수로 발진하여 전원을 인가하는 제1발진기 및 제2발진기와, 제1발진기에 연결되어 전원 공급에 따라 인덕턴스를 발생시키는 제1여자코일과, 제1여자코일에 대응하여 설치되는 커플러와, 제2발진기에 연결되어 전원 공급에 따라 인덕턴스를 발생시키는 제2여자코일과, 제1여자코일의 주파수와 제2여자코일의 주파수를 비교하는 주파수 비교기와, 주파수 비교기의 출력단에 연결되어 아날로그 신호를 디지털 신호로 변환하는 제1컨버터와, 제1컨버터에 연결되는 제1위상동기회로와, 제1위상동기회로의 출력단에 연결되어 아날로그 신호를 디지털 신호로 변환하는 제2컨버터와, 제2컨버터에 연결되는 제2위상동기회로를 포함한다.
본 발명의 주파수 변조를 이용한 인덕턴스방식의 변위센서는 각각 설정된 주파수로 발진하여 전원을 인가하는 제1발진기 및 제2발진기와, 제1발진기에 연결되어 전원 공급에 따라 인덕턴스를 발생시키는 제1여자코일과, 제1여자코일에 대응하여 설치되는 커플러와, 제2발진기에 연결되어 전원 공급에 따라 인덕턴스를 발생시키는 제2여자코일과, 제1여자코일의 주파수와 제2여자코일의 주파수를 비교하는 주파수 비교기와, 주파수 비교기의 출력단에 연결되어 아날로그 신호를 디지털 신호로 변환하는 제1컨버터와, 제1컨버터에 연결되는 제1위상동기회로와, 제1위상동기회로의 출력단에 연결되어 아날로그 신호를 디지털 신호로 변환하는 제2컨버터와, 제2컨버터에 연결되는 제2위상동기회로를 포함한다.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020170008157A KR20180084484A (ko) | 2017-01-17 | 2017-01-17 | 주파수 변조를 이용한 인덕턴스방식의 변위센서 |
Applications Claiming Priority (1)
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KR1020170008157A KR20180084484A (ko) | 2017-01-17 | 2017-01-17 | 주파수 변조를 이용한 인덕턴스방식의 변위센서 |
Publications (1)
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KR20180084484A true KR20180084484A (ko) | 2018-07-25 |
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KR1020170008157A KR20180084484A (ko) | 2017-01-17 | 2017-01-17 | 주파수 변조를 이용한 인덕턴스방식의 변위센서 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102136947B1 (ko) | 2019-01-17 | 2020-07-22 | 한국교통대학교산학협력단 | 인덕턴스 특성을 이용한 횡변위 검출 방법 |
KR20210000177A (ko) * | 2019-06-24 | 2021-01-04 | 주식회사 다모아텍 | 인덕티브 포스 센서 및 그 동작 방법 |
KR20210064711A (ko) * | 2019-11-26 | 2021-06-03 | 삼성전기주식회사 | 공통잡음 제거기능을 갖는 스위칭 조작 센싱 장치 |
KR102364056B1 (ko) * | 2020-12-31 | 2022-02-18 | 주식회사 다모아텍 | 터치 및 터치 포스를 감지하는 하이브리드 센서 및 그 동작 방법 |
US11392236B2 (en) | 2019-07-18 | 2022-07-19 | Damoatech Co., Ltd. | Touch force sensor using inductive sensing and capacitive sensing and method of operating same |
US11460357B2 (en) | 2019-06-24 | 2022-10-04 | Damoatech Co., Ltd. | Electronic device including power-on button and inductive touch force sensor |
-
2017
- 2017-01-17 KR KR1020170008157A patent/KR20180084484A/ko not_active Application Discontinuation
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102136947B1 (ko) | 2019-01-17 | 2020-07-22 | 한국교통대학교산학협력단 | 인덕턴스 특성을 이용한 횡변위 검출 방법 |
KR20210000177A (ko) * | 2019-06-24 | 2021-01-04 | 주식회사 다모아텍 | 인덕티브 포스 센서 및 그 동작 방법 |
KR20210125964A (ko) * | 2019-06-24 | 2021-10-19 | 주식회사 다모아텍 | 인덕티브 포스 센서 및 그 동작 방법 |
US11460357B2 (en) | 2019-06-24 | 2022-10-04 | Damoatech Co., Ltd. | Electronic device including power-on button and inductive touch force sensor |
US11392236B2 (en) | 2019-07-18 | 2022-07-19 | Damoatech Co., Ltd. | Touch force sensor using inductive sensing and capacitive sensing and method of operating same |
KR20210064711A (ko) * | 2019-11-26 | 2021-06-03 | 삼성전기주식회사 | 공통잡음 제거기능을 갖는 스위칭 조작 센싱 장치 |
KR102364056B1 (ko) * | 2020-12-31 | 2022-02-18 | 주식회사 다모아텍 | 터치 및 터치 포스를 감지하는 하이브리드 센서 및 그 동작 방법 |
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