JP2005274395A - 箔歪みゲージ - Google Patents
箔歪みゲージ Download PDFInfo
- Publication number
- JP2005274395A JP2005274395A JP2004088930A JP2004088930A JP2005274395A JP 2005274395 A JP2005274395 A JP 2005274395A JP 2004088930 A JP2004088930 A JP 2004088930A JP 2004088930 A JP2004088930 A JP 2004088930A JP 2005274395 A JP2005274395 A JP 2005274395A
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- JP
- Japan
- Prior art keywords
- strain
- foil
- load cell
- strain gauge
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2268—Arrangements for correcting or for compensating unwanted effects
- G01L1/2275—Arrangements for correcting or for compensating unwanted effects for non linearity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
- G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
- G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
- G01G3/1402—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
- G01G3/1412—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being parallelogram shaped
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
- G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
- G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
- G01G3/1414—Arrangements for correcting or for compensating for unwanted effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2287—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges constructional details of the strain gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/26—Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Measurement Of Force In General (AREA)
Abstract
【解決手段】この箔歪みゲージGは、絶縁性のベース基板2の表面上に金属箔を接着した後、フォトエッチング技術により格子状の独立した2つのパターンからなる抵抗体R1、R2を形成すると共に、それぞれの両端にゲージリードLを接続したもので、抵抗体R1、R2は、同一パターンで接近して形成されているので、独立した同一特性の2つの抵抗値変化による歪み検出信号を取り出すことができる。ロードセルの上辺起歪部の中心軸上に貼着することにより、載置荷重誤差を低減することができる。
【選択図】 図1
Description
V=(ΔR/R0)Vb (6)
本発明は、このような状況に鑑みてなされたものであって、偏置誤差の少ない高精度のロードセルを構成することができる箔歪みゲージを提供することを目的とするものである。
本発明の歪みゲージは、上記のように構成されており、同一の二つの検出信号が得られるので、理想的なホイートストンブリッジを構成することができる。
V0=(r3r4−r1r2)Vb/((r1+r4)(r2+r3)) (1)
r1、r2=R0−K12W (2)
r3、r4=R0+K34W (3)
上記(1)〜(3)式の関係から箔歪みゲージG1、G2を使用したロードセル1から下記(4)式に示す出力電圧V0が得られる。
V0=Vb・W(K34+K12)/((2R0+(K34−K12)W) (4)
そして、前記比例係数K12、K34が等しい箔歪みゲージG1、G2を組みあわせて使用することにより、下記(5)式で示されるような荷重Wに比例した出力電圧V0が得られる。
V0=K12Vb・W/R0 (5)
また、ロードセル母体3の中心線上に箔歪みゲージG1、G2を貼着することにより、偏置荷重の影響を受け易い歪み発生箇所からの歪み検出を避けることができ、偏置荷重による計量誤差の発生を低減することができる。
2 ベース基板
3 ロードセル母体
31 上辺部
32 下辺部
33 可動柱
34 固定柱
35 溝
4 計量皿
5 基準電源
6 ホイートストンブリッジ
G、G1、G2 箔歪みゲージ
H、H1〜H4 箔歪みゲージ
L ゲージリード
R、R1〜R4 抵抗体
S1〜S4 起歪部
W 荷重
Claims (1)
- 起歪部に貼着して、起歪部に生じる歪み量に比例した抵抗値変化量を検出出力とする箔歪みゲージであって、絶縁性のベース基板上に近接平行して2つの格子状の抵抗体を検出部として設け、起歪部に貼着することにより同一の検出出力が得られる2つの検出部を備えていることを特徴とする箔歪みゲージ。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004088930A JP4337595B2 (ja) | 2004-03-25 | 2004-03-25 | ロードセル |
US11/082,907 US7347109B2 (en) | 2004-03-25 | 2005-03-18 | Load cell with foil strain gauge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004088930A JP4337595B2 (ja) | 2004-03-25 | 2004-03-25 | ロードセル |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005274395A true JP2005274395A (ja) | 2005-10-06 |
JP4337595B2 JP4337595B2 (ja) | 2009-09-30 |
Family
ID=34988194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004088930A Expired - Fee Related JP4337595B2 (ja) | 2004-03-25 | 2004-03-25 | ロードセル |
Country Status (2)
Country | Link |
---|---|
US (1) | US7347109B2 (ja) |
JP (1) | JP4337595B2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021503082A (ja) * | 2017-11-14 | 2021-02-04 | インテュイティブ サージカル オペレーションズ, インコーポレイテッド | 分割ブリッジ回路力センサ |
US11571264B2 (en) | 2007-12-18 | 2023-02-07 | Intuitive Surgical Operations, Inc. | Force sensor temperature compensation |
US11650111B2 (en) | 2007-12-18 | 2023-05-16 | Intuitive Surgical Operations, Inc. | Ribbed force sensor |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0613205D0 (en) * | 2006-07-03 | 2006-08-09 | Dage Prec Ind Ltd | High speed test cartridge |
CN101542256B (zh) * | 2007-02-02 | 2011-08-17 | 株式会社石田 | 负载传感器 |
KR101505255B1 (ko) * | 2009-07-28 | 2015-03-23 | 비쉐이 프리시젼 그룹, 인크. | 변형 게이지 기반의 변환기에서의 회로 보상 |
WO2014033872A1 (ja) * | 2012-08-30 | 2014-03-06 | 富士通株式会社 | 表示装置,プログラム |
US9709436B2 (en) | 2013-03-15 | 2017-07-18 | Illinois Tool Works Inc. | Load cell that is symmetrical about a central vertical axis |
US20150296607A1 (en) * | 2014-04-11 | 2015-10-15 | Apple Inc. | Electronic Device With Flexible Printed Circuit Strain Gauge Sensor |
US20150296622A1 (en) * | 2014-04-11 | 2015-10-15 | Apple Inc. | Flexible Printed Circuit With Semiconductor Strain Gauge |
CN104019109A (zh) * | 2014-06-13 | 2014-09-03 | 国家电网公司 | 应变电阻弹簧垫 |
US10919511B2 (en) * | 2018-12-20 | 2021-02-16 | Bendix Commercial Vehicle Systems Llc | System and method for determining status of a brake spring |
CN114777970B (zh) * | 2022-05-23 | 2023-04-11 | 电子科技大学 | 高刚度测力刀柄上基于柔性电路板的薄膜应变计电桥电路 |
GB2623802A (en) * | 2022-10-27 | 2024-05-01 | Remaker Ltd | In-line exercise measurement device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3543568A (en) * | 1967-12-13 | 1970-12-01 | John D Russell | Strain gage assembly |
US4546652A (en) * | 1981-12-22 | 1985-10-15 | Materials Research, Inc. | In-situ on-line structural failure detection system, its preparation and operation |
US4744252A (en) * | 1987-05-19 | 1988-05-17 | The United States Of America As Represented By The United States Department Of Energy | Triple-material stress-strain resistivity gage |
US7499742B2 (en) * | 2001-09-26 | 2009-03-03 | Cvrx, Inc. | Electrode structures and methods for their use in cardiovascular reflex control |
JP3972188B2 (ja) * | 2002-05-07 | 2007-09-05 | 株式会社島津製作所 | ロードセル |
-
2004
- 2004-03-25 JP JP2004088930A patent/JP4337595B2/ja not_active Expired - Fee Related
-
2005
- 2005-03-18 US US11/082,907 patent/US7347109B2/en not_active Expired - Fee Related
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11571264B2 (en) | 2007-12-18 | 2023-02-07 | Intuitive Surgical Operations, Inc. | Force sensor temperature compensation |
US11650111B2 (en) | 2007-12-18 | 2023-05-16 | Intuitive Surgical Operations, Inc. | Ribbed force sensor |
JP2021503082A (ja) * | 2017-11-14 | 2021-02-04 | インテュイティブ サージカル オペレーションズ, インコーポレイテッド | 分割ブリッジ回路力センサ |
JP7114706B2 (ja) | 2017-11-14 | 2022-08-08 | インテュイティブ サージカル オペレーションズ, インコーポレイテッド | 分割ブリッジ回路力センサ |
US11460360B2 (en) | 2017-11-14 | 2022-10-04 | Intuitive Surgical Operations, Inc. | Split bridge circuit force sensor |
JP2022161908A (ja) * | 2017-11-14 | 2022-10-21 | インテュイティブ サージカル オペレーションズ, インコーポレイテッド | 分割ブリッジ回路力センサ |
US11965789B2 (en) | 2017-11-14 | 2024-04-23 | Intuitive Surgical Operations, Inc. | Split bridge circuit force sensor |
JP7512328B2 (ja) | 2017-11-14 | 2024-07-08 | インテュイティブ サージカル オペレーションズ, インコーポレイテッド | 分割ブリッジ回路力センサ |
Also Published As
Publication number | Publication date |
---|---|
US7347109B2 (en) | 2008-03-25 |
US20050211003A1 (en) | 2005-09-29 |
JP4337595B2 (ja) | 2009-09-30 |
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