KR100490826B1 - 초소형 진동현식 지중변위계 - Google Patents
초소형 진동현식 지중변위계 Download PDFInfo
- Publication number
- KR100490826B1 KR100490826B1 KR1019980054146A KR19980054146A KR100490826B1 KR 100490826 B1 KR100490826 B1 KR 100490826B1 KR 1019980054146 A KR1019980054146 A KR 1019980054146A KR 19980054146 A KR19980054146 A KR 19980054146A KR 100490826 B1 KR100490826 B1 KR 100490826B1
- Authority
- KR
- South Korea
- Prior art keywords
- vibrating
- string
- wire
- vibration
- housing
- Prior art date
Links
Classifications
-
- 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
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
Claims (2)
- 중공의 실린더(20) 내부에 와이어나 얇은 박판으로된 다수의 진동현(21)을 내설하여 그 일측 단부를 상기 실린더(20)에 고정하고 나머지 단부들에는 각각 코일스프링(25)을 결합하여 와이어(41)와 연결하고, 이들 실린더(20)를 하우징(10) 내부에 삽입 설치한 다음, 상기 와이어(41)는 하우징(10) 외부로 연장되게 상기 하우징(10) 외부로 각기 길이가 다르게 형성된 보호관(40) 내부로 설치하여 그 각각의 단부에 고정봉(45)을 일체로 설치한 다음, 실린더(20)에 설치되고 온도센서와 낙뢰나 노이즈로 부터 보호해 주는 캐피시트(70)를 구성한 트랜스포머(50)를 외부의 자동계측시스템 등의 출력장치(도시하지않음)과 시그날케이블(60)로 연결하여서 상기 고정봉(45)에 가해지는 외부의 힘이 코일스프링(25)을 통하여 진동현(21)에 전달 됨으로서 장력이 달라진 진동현(21)을 트랜스포머(50)가 자화시켜 이때 발생되는 공진주파수를 트랜스포머(50)가 감지하여서 시그날케이블(60)을 통하여 외부로 출력하게 한 후 진동현(21)의 장력변화에 의한 변화되어 출력되는 공진주파수를 자동계측시스템 등의 출력장치로 읽어서 계측토목공사나 건축공사 현장의 암반이나 지층의 거동상태를 보다 정확하게 측정할수 있도록 구성함을 특징으로 하는 초소형 진동현식 지중변위계(MINIATURE VIBRATING WIRE ROD EXTENSOMETER).
- 제1항에 있어서,상기 진동현(21)과 코일스프링(25)을 통하여 결합된 와이어(41)와 이를 보호하기 위한 보호관(40)의 끝단에 일체로 형성한 고정봉(45)의 끝단을 일정한 길이로 일치시키고 하우징(10)의 외주면에 형성된 플랜지(11)에 고정바(15)을 길게하여 수직방향의 지중변위를 측정하도록 구성함을 특징으로하는 초소형 진동현식 지중변위계(MINIATURE VIBRATING WIRE ROD EXTENSOMETER).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980054146A KR100490826B1 (ko) | 1998-12-10 | 1998-12-10 | 초소형 진동현식 지중변위계 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019980054146A KR100490826B1 (ko) | 1998-12-10 | 1998-12-10 | 초소형 진동현식 지중변위계 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19990024135A KR19990024135A (ko) | 1999-03-25 |
KR100490826B1 true KR100490826B1 (ko) | 2005-08-01 |
Family
ID=37303852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019980054146A KR100490826B1 (ko) | 1998-12-10 | 1998-12-10 | 초소형 진동현식 지중변위계 |
Country Status (1)
Country | Link |
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KR (1) | KR100490826B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104897043A (zh) * | 2015-06-16 | 2015-09-09 | 洛阳理工学院 | 一种刚度可调的埋入式钢弦应变传感器 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100529840B1 (ko) * | 1998-12-10 | 2006-02-08 | 주식회사 에이스인스트루먼트 | 초소형 진동현식 변위계 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4277973A (en) * | 1978-12-04 | 1981-07-14 | Ivor Hawkes | Vibratory wire strain gage |
US5038622A (en) * | 1989-12-22 | 1991-08-13 | Tijmann Willem B | Strain gage assembly for measuring excessive tensile strain of a flexible elongated member, such as a steel structural cable, or an electrical transmission cable, or a glass fiber optic communication cable, which may slightly twist under tensile strain |
KR19990024134A (ko) * | 1998-12-10 | 1999-03-25 | 김균식 | 초소형 진동현식 변위계 |
-
1998
- 1998-12-10 KR KR1019980054146A patent/KR100490826B1/ko not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4277973A (en) * | 1978-12-04 | 1981-07-14 | Ivor Hawkes | Vibratory wire strain gage |
US5038622A (en) * | 1989-12-22 | 1991-08-13 | Tijmann Willem B | Strain gage assembly for measuring excessive tensile strain of a flexible elongated member, such as a steel structural cable, or an electrical transmission cable, or a glass fiber optic communication cable, which may slightly twist under tensile strain |
KR19990024134A (ko) * | 1998-12-10 | 1999-03-25 | 김균식 | 초소형 진동현식 변위계 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104897043A (zh) * | 2015-06-16 | 2015-09-09 | 洛阳理工学院 | 一种刚度可调的埋入式钢弦应变传感器 |
Also Published As
Publication number | Publication date |
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KR19990024135A (ko) | 1999-03-25 |
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