JP2006250647A5 - - Google Patents
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- JP2006250647A5 JP2006250647A5 JP2005066128A JP2005066128A JP2006250647A5 JP 2006250647 A5 JP2006250647 A5 JP 2006250647A5 JP 2005066128 A JP2005066128 A JP 2005066128A JP 2005066128 A JP2005066128 A JP 2005066128A JP 2006250647 A5 JP2006250647 A5 JP 2006250647A5
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- JP
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- Prior art keywords
- optical fiber
- wire cable
- fiber sensor
- light
- tension
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Claims (5)
このワイヤケーブルの軸方向の歪を検出する歪検出手段が、当該ワイヤケーブルに組み込まれ、
前記歪検出手段が光ファイバーからなる光ファイバーセンサであり、
この光ファイバーセンサが、前記ワイヤケーブルの伸縮に伴って変形するよう前記ワイヤケーブルに組み込まれ、前記光ファイバーセンサの変形により、入射された光の周波数の変化、もしくは光の反射、屈折又は干渉を検知することを特徴とするワイヤケーブル。 A wire cable formed by twisting together a plurality of strands,
The strain detection means for detecting the strain in the axial direction of the wire cable is incorporated in the wire cable,
The strain detection means is an optical fiber sensor comprising an optical fiber,
This optical fiber sensor is incorporated in the wire cable so as to be deformed as the wire cable expands and contracts, and the deformation of the optical fiber sensor detects a change in frequency of incident light, or reflection, refraction, or interference of light. A wire cable characterized by that.
前記ワイヤケーブルに組み込まれ、前記ワイヤケーブルの歪を検出する歪検出手段と、
前記歪検出手段の検出に基づいて前記ワイヤケーブルに作用する張力を算出する張力演算手段と、
前記歪検出手段の検出を前記歪検出手段から前記張力演算手段まで送信する信号通信手段と、を備え、
前記信号通信手段が、光ファイバーケーブルであり、
前記歪検出手段が、光ファイバーケーブルの一部を利用して形成された光ファイバーセンサであり、
この光ファイバーセンサが、前記ワイヤケーブルの伸縮に伴って変形するよう前記ワイヤケーブルに組み込まれ、前記光ファイバーセンサの変形によって、この光ファイバーセンサに入射された光の周波数の変化、もしくは光の反射、屈折又は干渉を検知して、
前記張力演算手段では、前記光ファイバーセンサの検知内容に基づいて、前記ワイヤケーブルの張力を算出することを特徴とする張力測定システム。 A tension measuring system that supports members constituting a structure in a fixed posture and measures the tension of a wire cable formed by twisting together a plurality of strands,
A strain detector that is incorporated in the wire cable and detects strain of the wire cable;
A tension calculating means for calculating a tension acting on the wire cable based on the detection of the strain detecting means;
Signal communication means for transmitting detection of the strain detection means from the strain detection means to the tension calculation means,
The signal communication means is an optical fiber cable;
The strain detection means is an optical fiber sensor formed using a part of an optical fiber cable,
This optical fiber sensor is incorporated in the wire cable so as to be deformed as the wire cable expands and contracts, and the deformation of the optical fiber sensor changes the frequency of light incident on the optical fiber sensor, or reflects, refracts or refractions the light. Detect the interference,
The tension measurement system characterized in that the tension calculation means calculates the tension of the wire cable based on the detection content of the optical fiber sensor.
該光ファイバーセンサに連結されて前記光ファイバーセンサの信号を送信する光ファイバーケーブルと、
該光ファイバーケーブルに接続されて該光ファイバーケーブルを介して前記光ファイバーセンサへ所定の波長を有する光を入射させる光源、前記光ファイバーセンサから反射された光を受光する受光部、該受光部で受光された光を所定の電気信号に変換するインターフェイス等の機能を有すると共に前記光ファイバーケーブルを介して前記光ファイバーセンサから送信された反射光の信号に基づいて前記光ファイバーセンサで検知した波長の変化に基づき、ワイヤケーブルの歪を算出する光学部と、
該光学部に接続されて該光学部に対して測定開始・終了等の指令を発信するコントローラとして機能するコンピュータと、を備え、
前記光学部が、一定時間毎に測定を繰り返すようにシステム設計されていることを特長とする張力測定システム。 An optical fiber sensor incorporated in a wire cable of a bridge so as to be deformed as the wire cable expands and contracts;
An optical fiber cable coupled to the optical fiber sensor for transmitting a signal of the optical fiber sensor;
A light source that is connected to the optical fiber cable and causes light having a predetermined wavelength to enter the optical fiber sensor via the optical fiber cable, a light receiving unit that receives light reflected from the optical fiber sensor, and light received by the light receiving unit Based on a change in wavelength detected by the optical fiber sensor based on a reflected light signal transmitted from the optical fiber sensor via the optical fiber cable and having a function of an interface or the like for converting the signal into a predetermined electrical signal. An optical unit for calculating distortion;
A computer that is connected to the optical unit and functions as a controller that transmits instructions such as measurement start / end to the optical unit,
The tension measuring system is characterized in that the optical unit is designed so that the measurement is repeated at regular intervals .
光ファイバーケーブルの一部を利用して形成された光ファイバーセンサを前記ワイヤケーブルに組み込み、
前記ワイヤケーブルの伸縮に伴って、前記光ファイバーセンサを変形せしめ、この変形に伴って発生する、前記光ファイバーセンサに入射された光の周波数の変化、もしくは光の反射、屈折又は干渉を検知し、
検知された光の周波数の変化、もしくは光の反射、屈折又は干渉に基づいて、張力演算手段により前記ワイヤケーブルの張力を算出することを特徴とする張力測定方法。 In measuring the tension of a wire cable formed by supporting a member constituting a structure in a fixed posture and twisting a plurality of strands together,
An optical fiber sensor formed by using a part of the optical fiber cable is incorporated into the wire cable,
As the wire cable expands and contracts, the optical fiber sensor is deformed, and a change in the frequency of light incident on the optical fiber sensor, or a reflection, refraction, or interference of the light that occurs along with the deformation is detected.
A tension measuring method, comprising: calculating a tension of the wire cable by a tension calculating unit based on a change in a detected frequency of light or reflection, refraction, or interference of light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005066128A JP2006250647A (en) | 2005-03-09 | 2005-03-09 | Wire cable, and tension measurement system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005066128A JP2006250647A (en) | 2005-03-09 | 2005-03-09 | Wire cable, and tension measurement system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2006250647A JP2006250647A (en) | 2006-09-21 |
| JP2006250647A5 true JP2006250647A5 (en) | 2006-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005066128A Pending JP2006250647A (en) | 2005-03-09 | 2005-03-09 | Wire cable, and tension measurement system and method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2006250647A (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080046046A (en) * | 2006-11-21 | 2008-05-26 | 전남대학교산학협력단 | Earthanchor structure using using optial fiber embeded wire strand and health monitoring method of thereof |
| JP5009174B2 (en) * | 2008-01-08 | 2012-08-22 | 公益財団法人鉄道総合技術研究所 | Strong wind monitoring method and strong wind monitoring device |
| KR100965001B1 (en) | 2008-05-27 | 2010-06-21 | 전남대학교산학협력단 | wire strand having sensor unit and production method of thereof |
| KR100956686B1 (en) * | 2009-07-17 | 2010-05-10 | 전남대학교산학협력단 | Health monitoring method for Bridge structure using optial fiber embeded wire strand |
| KR100956687B1 (en) * | 2009-07-17 | 2010-05-10 | 전남대학교산학협력단 | Health monitoring method of earthanchor structure using optial fiber embeded wire strand |
| CN101701450B (en) * | 2009-09-30 | 2011-12-21 | 法尔胜集团公司 | Bridge intelligent cable system with built-in fiber grating sensor |
| CN102162760B (en) * | 2010-12-29 | 2012-10-10 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Cable force monitoring device for attached-type stay cable |
| CN110435812A (en) * | 2012-05-30 | 2019-11-12 | 赛创尼克株式会社 | The control method monitored by the real-time measurement to marine structure |
| JP5792705B2 (en) * | 2012-10-22 | 2015-10-14 | 株式会社神戸製鋼所 | Strain distribution measuring apparatus, strain distribution measuring method, and strain distribution measuring program |
| JP6226131B2 (en) * | 2014-02-21 | 2017-11-08 | 住友電工スチールワイヤー株式会社 | PC steel tension measuring device |
| JP6434260B2 (en) * | 2014-09-11 | 2018-12-05 | 鹿島建設株式会社 | Measuring device, strain measuring method, PC steel strand, and optical fiber member |
| SE538499C2 (en) * | 2014-11-13 | 2016-08-09 | Rock Safety Sweden Ab | Device for rock bolt and method for using the device as well as reinforcing systems including such device. |
| WO2016182428A1 (en) * | 2015-05-08 | 2016-11-17 | Fugro Technology B.V. | Optical sensor device, sensor apparatus and cable |
| JP5879453B1 (en) | 2015-08-27 | 2016-03-08 | 新日鉄住金エンジニアリング株式会社 | Method of introducing initial tensile strain into cable and optical fiber |
| CN105568856B (en) * | 2015-12-23 | 2018-03-30 | 中铁大桥局集团有限公司 | A kind of dilute cable stayed-cable bridge Suo Liang method for synchronously constructing |
| JP6875672B2 (en) * | 2016-07-11 | 2021-05-26 | 東京電力ホールディングス株式会社 | Structure strain sensor and structure strain detection method |
| CN110207876B (en) * | 2019-06-20 | 2021-07-13 | 中船重工海为郑州高科技有限公司 | Miniature steel wire rope tension sensor |
| RU2717693C1 (en) * | 2019-06-24 | 2020-03-25 | Акционерное общество "Научно-исследовательский и проектно-конструкторский институт информатизации, автоматизации и связи на железнодорожном транспорте" | Artificial structures control and diagnostics system |
| CN111397822A (en) * | 2020-04-11 | 2020-07-10 | 江西驰宇光电科技发展有限公司 | Bridge safety monitoring device and method based on laser gyroscope |
| US20230375375A1 (en) * | 2022-05-19 | 2023-11-23 | Nec Laboratories America, Inc. | Telecom Cable Tension Screening Technique Based on Wave Propagation and Distributed Acoustic Sensing |
| CN116164626B (en) * | 2023-02-07 | 2024-03-26 | 浙江启明电力集团有限公司 | Cable deformation detection equipment |
| CN117029713B (en) * | 2023-10-08 | 2024-02-20 | 中科航迈数控软件(深圳)有限公司 | Machine tool spindle deformation monitoring system, method, equipment and medium |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3901845A1 (en) * | 1989-01-23 | 1990-07-26 | Felten & Guilleaume Energie | LIGHTWAVE LEAD SENSOR FOR SMALL TENSION OR PRESSURE FORCES |
| JPH05180713A (en) * | 1992-01-08 | 1993-07-23 | Mitsubishi Heavy Ind Ltd | Cable tension measuring method and device |
| NO310125B1 (en) * | 1999-05-06 | 2001-05-21 | Leiv Eiriksson Nyfotek As | System for monitoring high voltage cables in air tension |
| JP2001318011A (en) * | 2000-05-02 | 2001-11-16 | Toa Grout Kogyo Co Ltd | Method of measuring strain or tensile force of tension steel member |
-
2005
- 2005-03-09 JP JP2005066128A patent/JP2006250647A/en active Pending
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