JP2008281422A - Non-contact measurement system of oscillation characteristic of construction - Google Patents
Non-contact measurement system of oscillation characteristic of construction Download PDFInfo
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Abstract
Description
本発明は、構造物の振動特性の非接触計測システムに係り、特に、河川橋梁の非接触計測における構造物への非接触計測対象面の形成に関するものである。 The present invention relates to a non-contact measurement system for vibration characteristics of a structure, and more particularly to formation of a non-contact measurement target surface on a structure in non-contact measurement of a river bridge.
近年、我が国の荒廃するインフラの管理が叫ばれており、特に、２０１０年代に更新時期を迎える、橋梁や道路などのインフラのリスク管理が重要な課題となってきている。 In recent years, management of infrastructure that has been devastated in Japan has been screamed, and in particular, risk management of infrastructure such as bridges and roads, which has reached a renewal period in the 2010s, has become an important issue.
本願の発明者は、既に、構造物の振動特性の非接触計測システムについて提案を行っている（下記特許文献１参照）。 The inventor of the present application has already proposed a non-contact measurement system for vibration characteristics of a structure (see Patent Document 1 below).
一方、携帯に適したマーキングボール発射装置が提案されている（下記特許文献２参照）。
しかしながら、構造物の振動特性の非接触計測システムにおいて、レーザードップラーを用いる場合、橋梁などの高い箇所を計測対象面とする時、レーザーが反射する面を如何に設定するかが問題となる。 However, when a laser Doppler is used in a non-contact measurement system for vibration characteristics of a structure, when a high part such as a bridge is used as a measurement target surface, how to set a surface on which the laser reflects is a problem.
図７は従来の非接触計測の対象となる構造物に貼付ける再帰性反射シールを示す図、図８は従来の高架橋の下面に再帰性反射シールを貼付ける様子を示す図である。 従来は、図７に示すような再帰性反射シール１０１を計測の対象となる構造物に貼付けるようにしている。つまり、図８のように計測の対象となる構造物が橋梁１０３の下面であるような場合には、長尺状の棒（約１０ｍ）１０２の先に再帰性反射シール１０１を保持して計測の対象となる橋梁１０３の下面に貼付するようにしていた。 FIG. 7 is a view showing a retroreflective seal attached to a structure to be subjected to conventional non-contact measurement, and FIG. 8 is a view showing a state where the retroreflective seal is attached to the lower surface of a conventional viaduct. Conventionally, a retroreflective seal 101 as shown in FIG. 7 is attached to a structure to be measured. That is, when the structure to be measured is the lower surface of the bridge 103 as shown in FIG. 8, measurement is performed by holding the retroreflective seal 101 at the end of the long rod (about 10 m) 102. It was made to affix on the lower surface of the bridge 103 used as an object.
このように、河川橋梁などにおいては、非接触計測対象物に如何にレーザーが反射する面を設定するかが問題である。 Thus, in river bridges and the like, the problem is how to set the surface on which the laser reflects on the non-contact measurement object.
本発明は、上記状況に鑑みて、非接触計測条件が悪い箇所においても、的確にレーザーが反射する面を設定することができる構造物の振動特性の非接触計測システムを提供することを目的とする。 In view of the above situation, an object of the present invention is to provide a non-contact measurement system for vibration characteristics of a structure capable of accurately setting a surface on which a laser is reflected even in a place where the non-contact measurement condition is bad. To do.
本発明は、上記目的を達成するために、
〔１〕構造物の振動特性の非接触計測システムにおいて、レーザー光を利用した構造物の振動特性の非接触計測装置に、ペイント弾を着弾させ再帰性反射塗料を付着させることによる非接触計測対象面の形成装置を具備することを特徴とする。
In order to achieve the above object, the present invention provides
[1] In a non-contact measurement system for vibration characteristics of a structure, a non-contact measurement target is obtained by applying a paint bullet and attaching a retroreflective coating to a non-contact measurement apparatus for vibration characteristics of a structure using laser light. A surface forming apparatus is provided.
〔２〕上記〔１〕記載の構造物の振動特性の非接触計測システムにおいて、レーザー照準スコープ付きの前記構造物の振動特性の非接触計測装置に、前記非接触計測対象面の形成装置を併設することを特徴とする。 [2] In the non-contact measurement system for vibration characteristics of a structure according to [1] above, the non-contact measurement device for vibration characteristics of the structure with a laser aiming scope is additionally provided with a device for forming the non-contact measurement target surface It is characterized by doing.
〔３〕上記〔１〕又は〔２〕記載の構造物の振動特性の非接触計測システムにおいて、前記レーザー光を利用した構造物の振動特性の非接触計測装置のセンサ部と前記非接触計測対象面の形成装置との間に弾性部材を挟着することを特徴とする。 [3] In the non-contact measurement system for vibration characteristics of a structure according to [1] or [2] above, the sensor unit of the non-contact measurement apparatus for vibration characteristics of the structure using the laser beam and the non-contact measurement target An elastic member is sandwiched between the surface forming apparatus and the surface forming apparatus.
〔４〕上記〔１〕記載の構造物の振動特性の非接触計測システムにおいて、前記非接触計測装置と非接触計測対象面の形成装置とは共通の照準器を具備することを特徴とする。 [4] In the non-contact measurement system for vibration characteristics of a structure according to [1] above, the non-contact measurement device and the non-contact measurement target surface forming device include a common sight.
〔５〕上記〔１〕記載の構造物の振動特性の非接触計測システムにおいて、前記構造物が河川橋梁であることを特徴とする。 [5] The non-contact measurement system for vibration characteristics of a structure according to [1], wherein the structure is a river bridge.
〔６〕上記〔１〕記載の構造物の振動特性の非接触計測システムにおいて、前記構造物が高架橋であることを特徴とする。 [6] In the non-contact measurement system for vibration characteristics of a structure according to [1], the structure is a viaduct.
本発明によれば、河川橋梁や高所等、従来反射ターゲットとして用いてきた再帰性反射シール等を簡単に貼付できない場所へ迅速にかつ的確に非接触計測対象面を形成することができるとともに、振動測定による構造物検査作業の効率化と安全性をめざした、構造物の振動を長距離非接触測定できる新しいシステムであるＵドップラー装置（詳細は後述）から照射されたレーザー光は、再帰性反射が行われるので、その再帰性反射したレーザー光をＵドップラー装置で的確に検出することができ、正確な非接触計測を実施することができる。 According to the present invention, it is possible to quickly and accurately form a non-contact measurement target surface to a place where a retroreflective seal or the like that has been conventionally used as a reflection target, such as a river bridge or a high place, can not be easily pasted, Laser light emitted from a U-Doppler system (details will be described later), a new system that can measure vibrations of structures over long distances with the aim of improving the efficiency and safety of inspection work by vibration measurement, is recursive. Since reflection is performed, the retroreflected laser beam can be accurately detected by the U Doppler device, and accurate non-contact measurement can be performed.
また、非接触計測装置と非接触計測対象面の形成装置と間には弾性部材を備えることにより、非接触計測対象面の形成装置の操作時の衝撃・振動を吸収するようにして、非接触計測装置への影響をなくすことができる。 In addition, an elastic member is provided between the non-contact measurement device and the non-contact measurement target surface forming device so as to absorb impact and vibration during operation of the non-contact measurement target surface forming device, thereby preventing non-contact measurement. The influence on the measuring device can be eliminated.
更に、非接触計測装置と非接触計測対象面の形成装置とは共通の照準器を具備することにより照準手段の共通化を図り、低コスト化を図ることができる。 Furthermore, the non-contact measurement device and the non-contact measurement target surface forming device are provided with a common sighting device, so that the sighting means can be shared and the cost can be reduced.
本発明の構造物の振動特性の非接触計測システムは、レーザー光を利用した構造物の振動特性の非接触計測装置に、ペイント弾を着弾させ再帰性反射塗料を付着させることによる非接触計測対象面の形成装置を組み合わせてなる。 The non-contact measurement system for vibration characteristics of a structure according to the present invention is a non-contact measurement target by applying a paint bullet and attaching a retroreflective coating to a non-contact measurement apparatus for vibration characteristics of a structure using laser light. Combined with a surface forming device.
以下、本発明の実施の形態について詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail.
図１は本発明で用いるレーザー光を利用したＵドップラー装置の構成図である。 FIG. 1 is a configuration diagram of a U Doppler device using laser light used in the present invention.
この図において、レーザー光を利用したＵドップラー装置１は、三脚２、その三脚２上にセットされるセンサ部３、そのセンサ部３上に配置される照準手段としての照準スコープ４、データレコーダ５を備えている。６はその照準スコープ４に対応してセットされる非接触計測対象面を形成するボール発射装置、７はセンサ部３とボール発射装置６との間に挟着される衝撃乃至振動を吸収する弾性部材である。因みに、センサ部３は、例えば、レーザー光源としてＨｅ−Ｎｅガスレーザー（波長は６３２．８ｎｍ、出力１ｍＷ以下、測定距離範囲約１．０ｍ〜３０ｍ超）を用いる。なお、Ｕドップラー装置１とボール発射装置６とは共通の照準手段としての照準スコープ４を備えている。したがって、Ｕドップラー装置１とボール発射装置６にはそれぞれに照準手段を備える必要がないので低コスト化を図ることができる。 In this figure, a U Doppler device 1 using laser light includes a tripod 2, a sensor unit 3 set on the tripod 2, an aiming scope 4 as aiming means disposed on the sensor unit 3, and a data recorder 5. It has. 6 is a ball launcher that forms a non-contact measurement target surface set corresponding to the aiming scope 4, and 7 is an elasticity that absorbs shocks or vibrations sandwiched between the sensor unit 3 and the ball launcher 6. It is a member. Incidentally, the sensor unit 3 uses, for example, a He—Ne gas laser (wavelength is 632.8 nm, output is 1 mW or less, measurement distance range is about 1.0 m to more than 30 m) as a laser light source. The U Doppler device 1 and the ball launching device 6 include an aiming scope 4 as a common aiming means. Therefore, the U Doppler device 1 and the ball launching device 6 do not need to have aiming means for each, so that the cost can be reduced.
図２はＵドップラー装置のセンサ部と併設した非接触計測対象面を形成するボール発射装置を用いた構造物の振動特性の非接触計測システムの模式図、図３はボール発射装置の模式図、図４はそのボールとなるペイント弾（球形）の模式図、図５は再帰性反射の説明図であり、図５（ａ）はその再帰性反射の様子を示す図、図５（ｂ）はその反射材の断面図、図５（ｃ）はビーズによる再帰性反射の様子を示す図である。 FIG. 2 is a schematic diagram of a non-contact measurement system for vibration characteristics of a structure using a ball launching device that forms a non-contact measurement target surface in parallel with a sensor unit of the U Doppler device, FIG. 3 is a schematic diagram of the ball launching device, FIG. 4 is a schematic diagram of the paint bullet (spherical shape) that becomes the ball, FIG. 5 is an explanatory diagram of the retroreflection, FIG. 5A is a diagram showing the state of the retroreflection, and FIG. FIG. 5C is a cross-sectional view of the reflecting material, and FIG.
ここで、非接触計測対象面を形成するボール発射装置６は、例えば、図３に示すように一端から他端にかけてガス通路１１が形成される本体部１０と、圧縮気体が充填されたガスボンベ２２が収納され、本体部１０の一端側に装着されるガスホルダー部２０と、非接触計測対象面を形成するペイント弾（ボール）３３が装填され、本体部１０の他端側に装着されるバレル３１を有するバレル部３０とを備えている。さらに、本体部１０には、ガスボンベ２２を開封するピストン１３、およびそのピストン１３の操作レバー１２が設けられている。本体部１０のガス通路１１は、ガスホルダー部２０とバレル部３０により密封されており、操作レバー１２の操作によりガスボンベ２２が開封されると、ガスボンベ２２内の圧縮気体が本体部１０のガス通路１１内に充満し、充満した圧縮気体の圧力により、バレル部３０に装填されている非接触計測対象面を形成するペイント弾（ボール）３３がバレル部３０の外部へと発射される。 Here, the ball launching device 6 that forms the non-contact measurement target surface includes, for example, a main body 10 in which a gas passage 11 is formed from one end to the other end as shown in FIG. 3, and a gas cylinder 22 filled with compressed gas. Is stored, and a gas holder portion 20 mounted on one end side of the main body portion 10 and a paint bullet (ball) 33 forming a non-contact measurement target surface are loaded, and a barrel mounted on the other end side of the main body portion 10 And a barrel portion 30 having 31. Furthermore, the main body 10 is provided with a piston 13 for opening the gas cylinder 22 and an operation lever 12 for the piston 13. The gas passage 11 of the main body portion 10 is sealed by the gas holder portion 20 and the barrel portion 30. When the gas cylinder 22 is opened by the operation of the operation lever 12, the compressed gas in the gas cylinder 22 is transferred to the gas passage of the main body portion 10. 11, and paint bullets (balls) 33 forming a non-contact measurement target surface loaded in the barrel portion 30 are fired to the outside of the barrel portion 30 by the pressure of the filled compressed gas.
このようなボール発射装置は、例えば、上記した特許文献２に開示されている。特許文献２に記載されたマーキングボール発射装置は照準器を備えているが、本発明では、Ｕドップラー装置に搭載されている照準スコープ４を用いるようにしており、図３に示したこのボール発射装置６を、図１に示すようにＵドップラー装置１のセンサ部に併設するようにしている。なお、ボール発射装置はこのような構造に限定されるものではない。例えば、ガスボンベと発射筒とを併設してコンパクトな構造にするようにしてもよい。 Such a ball launcher is disclosed in, for example, Patent Document 2 described above. Although the marking ball launching device described in Patent Document 2 includes an aiming device, in the present invention, the aiming scope 4 mounted on the U Doppler device is used, and this ball launching shown in FIG. As shown in FIG. 1, the device 6 is provided in the sensor unit of the U Doppler device 1. The ball launcher is not limited to such a structure. For example, a gas cylinder and a launch tube may be provided together to form a compact structure.
また、ボール発射装置６は、Ｕドップラー装置１のセンサ部３に併設するが、ボール発射装置６とセンサ部３との間には衝撃乃至振動を吸収する弾性部材７を挟着するようにしたので、ボール発射装置６のボール発射時の衝撃乃至振動を有効に吸収することができ、非接触計測装置への影響をなくすことができる。 The ball launching device 6 is provided in the sensor unit 3 of the U Doppler device 1, but an elastic member 7 that absorbs shock or vibration is sandwiched between the ball launching device 6 and the sensor unit 3. Therefore, the impact or vibration at the time of ball launch of the ball launcher 6 can be effectively absorbed, and the influence on the non-contact measuring device can be eliminated.
ここでは、河川橋梁の下面に非接触計測対象面を形成する場合について説明する。 Here, a case where a non-contact measurement target surface is formed on the lower surface of the river bridge will be described.
図２に示されるように、レーザー光を利用したＵドップラー装置１とこのＵドップラー装置１に併設された非接触計測対象面を形成するボール発射装置６とを河川４１の片岸に配置する。Ｕドップラー装置１の照準スコープ４で非接触計測対象面を形成するボール発射装置６の照準も合わせて、ペイント弾（図示なし）を非接触計測対象面である橋梁４２の底面４３に発射する。このペイント弾は着弾すると破裂して測定対象面に再帰性反射塗料が付着する。この再帰性反射塗料が乾燥すると、反射ターゲットが完成する。ここで、ペイント弾は、図４に示されるように、再帰性反射塗料５２がゼラチン素材等の外被材５３により覆われている。また、完成した反射ターゲットは、図５に示すように、反射材６１上にはビーズ６２が付着し、光が入射した方向に戻る再帰性反射面を形成することができる。 As shown in FIG. 2, a U Doppler device 1 that uses laser light and a ball launching device 6 that forms a non-contact measurement target surface attached to the U Doppler device 1 are arranged on one bank of a river 41. The paint bullet (not shown) is also fired onto the bottom surface 43 of the bridge 42 which is the non-contact measurement target surface together with the aim of the ball launching device 6 that forms the non-contact measurement target surface with the aim scope 4 of the U Doppler device 1. When this paint bullet lands, it bursts and the retroreflective coating adheres to the surface to be measured. When the retroreflective coating is dried, the reflective target is completed. Here, as shown in FIG. 4, in the paint bullet, the retroreflective coating 52 is covered with a covering material 53 such as a gelatin material. Further, as shown in FIG. 5, the completed reflection target can be formed with a retroreflecting surface in which beads 62 are attached on the reflecting material 61 and return to the light incident direction.
したがって、非接触計測対象面が形成されると、Ｕドップラー装置１からこの面に照射されたレーザー光は再帰性反射が行われるので、その再帰性反射したレーザー光をＵドップラー装置１で検出することができ、正確な非接触計測を実施することができる。 Therefore, when the non-contact measurement target surface is formed, the laser light applied to the surface from the U Doppler device 1 is retroreflected. Therefore, the U Doppler device 1 detects the retroreflected laser light. And accurate non-contact measurement can be performed.
図６は本発明により高架橋に非接触計測対象面を形成する例を示す図である。 FIG. 6 is a diagram showing an example of forming a non-contact measurement target surface on a viaduct according to the present invention.
この図において、７１は高架橋であり、その高架橋７１上の側面７２にペイント弾７３を破裂させ、付着した再帰性反射塗料を乾燥させることで再帰性反射面７４を形成することができる。 In this figure, 71 is a viaduct, and the retroreflective surface 74 can be formed by rupturing the paint bullet 73 on the side surface 72 on the viaduct 71 and drying the adhering retroreflective coating.
このように構成することにより、特に、河川橋梁や高架橋等、従来反射ターゲットとして用いてきた再帰性反射シール等を簡単に貼付できない場所へ迅速にかつ的確に非接触計測対象面を形成することができると共に、Ｕドップラー装置から照射されたレーザー光は再帰性反射が行われるので、その再帰性反射したレーザー光をＵドップラー装置で的確に検出することができ、正確な非接触計測を実施することができる。 By configuring in this way, in particular, it is possible to quickly and accurately form a non-contact measurement target surface in a place where a retroreflective seal or the like that has been used as a conventional reflection target such as a river bridge or a viaduct cannot be easily applied. In addition, since the laser light emitted from the U Doppler device is retroreflected, the retroreflected laser light can be accurately detected by the U Doppler device, and accurate non-contact measurement is performed. Can do.
また、上記したように、レーザー照準スコープ付きの構造物の振動特性の非接触計測装置に前記非接触計測対象面の形成装置を併設することにより、構造物の振動特性の非接触計測システムを簡便に構築することができる。 Further, as described above, the non-contact measurement system for the vibration characteristics of the structure can be simplified by providing the non-contact measurement target surface forming apparatus together with the non-contact measurement apparatus for the vibration characteristics of the structure with the laser aiming scope. Can be built.
なお、上記実施例では、河川橋梁や高架橋への非接触計測対象面の形成について述べたが、建築物や、高所にある岩や、電柱などへの非接触計測対象面の形成にも適用することができる。 In the above embodiment, the formation of non-contact measurement target surfaces on river bridges and viaducts has been described. However, it can also be applied to the formation of non-contact measurement target surfaces on buildings, rocks in high places, utility poles, etc. can do.
また、本発明は上記実施例に限定されるものではなく、本発明の趣旨に基づき種々の変形が可能であり、これらを本発明の範囲から排除するものではない。 Further, the present invention is not limited to the above-described embodiments, and various modifications can be made based on the spirit of the present invention, and these are not excluded from the scope of the present invention.
本発明の構造物の振動特性の非接触計測システムは、正確な非接触計測を実施するための非接触計測対象面を迅速、かつ的確に形成することができる構造物の振動特性の非接触計測システムとして利用可能である。 The non-contact measurement system for vibration characteristics of a structure according to the present invention provides a non-contact measurement of vibration characteristics of a structure capable of quickly and accurately forming a non-contact measurement target surface for performing accurate non-contact measurement. It can be used as a system.
１ レーザー光を利用したＵドップラー装置
２ 三脚
３ センサ部
４ 照準スコープ
５ データレコーダ
６ 非接触計測対象面を形成するボール発射装置
７ 弾性部材
１０ 本体部
１１ ガス通路
１２ 操作レバー
１３ ピストン
２０ ガスホルダー部
２２ ガスボンベ
３０ バレル部
３１ バレル
３３，７３ ペイント弾
４１ 河川
４２ 橋梁
４３ 橋梁の底面
５２ 再帰性反射塗料
５３ 外被材
６１ 反射材
６２ ビーズ
７１ 高架橋
７２ 高架橋上の側面
７４ 再帰性反射面
DESCRIPTION OF SYMBOLS 1 U Doppler apparatus using a laser beam 2 Tripod 3 Sensor part 4 Aiming scope 5 Data recorder 6 Ball launcher which forms a non-contact measurement object surface 7 Elastic member 10 Main body part 11 Gas passage 12 Operation lever 13 Piston 20 Gas holder part 22 Gas cylinder 30 Barrel 31 Barrel 33,73 Paint bullet 41 River 42 Bridge 43 Bridge bottom 52 Retroreflective coating 53 Cover material 61 Reflective material 62 Beads 71 Viaduct 72 Side surface on viaduct 74 Retroreflective surface
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| JP2007125468A JP4912949B2 (en) | 2007-05-10 | 2007-05-10 | Non-contact measurement system for vibration characteristics of structures |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007125468A JP4912949B2 (en) | 2007-05-10 | 2007-05-10 | Non-contact measurement system for vibration characteristics of structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2008281422A true JP2008281422A (en) | 2008-11-20 |
| JP4912949B2 JP4912949B2 (en) | 2012-04-11 |
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| JP2007125468A Expired - Fee Related JP4912949B2 (en) | 2007-05-10 | 2007-05-10 | Non-contact measurement system for vibration characteristics of structures |
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| JP (1) | JP4912949B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010230464A (en) * | 2009-03-27 | 2010-10-14 | Railway Technical Res Inst | Noncontact vibration measuring system, stability evaluation system, noncontact vibration measuring method, and stability evaluation method |
| JP2011122824A (en) * | 2009-12-08 | 2011-06-23 | Koden Electronics Co Ltd | Bridge deterioration monitoring and recording device and bridge deterioration monitoring and recording system |
| JP2012040975A (en) * | 2010-08-20 | 2012-03-01 | Railway Technical Research Institute | Radio controlled aircraft for forming reflecting target |
| CN103835979A (en) * | 2012-11-27 | 2014-06-04 | 重庆长安汽车股份有限公司 | Non-contact type fan modality testing system and method |
| JP2014126390A (en) * | 2012-12-25 | 2014-07-07 | Railway Technical Research Institute | Non-contact measurement method and device of dynamic deflection of pc girder |
| JP2016109508A (en) * | 2014-12-04 | 2016-06-20 | 公益財団法人鉄道総合技術研究所 | Structure analysis system |
| US10323978B2 (en) | 2015-04-20 | 2019-06-18 | Panasonic Intellectual Property Management Co., Ltd. | Vibration visualization element including optical member |
| US10655952B2 (en) | 2016-06-14 | 2020-05-19 | Panasonic Intellectual Property Management Co., Ltd. | Visualizer, measurement system, and measurement method |
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| JP2011122824A (en) * | 2009-12-08 | 2011-06-23 | Koden Electronics Co Ltd | Bridge deterioration monitoring and recording device and bridge deterioration monitoring and recording system |
| JP2012040975A (en) * | 2010-08-20 | 2012-03-01 | Railway Technical Research Institute | Radio controlled aircraft for forming reflecting target |
| CN103835979A (en) * | 2012-11-27 | 2014-06-04 | 重庆长安汽车股份有限公司 | Non-contact type fan modality testing system and method |
| JP2014126390A (en) * | 2012-12-25 | 2014-07-07 | Railway Technical Research Institute | Non-contact measurement method and device of dynamic deflection of pc girder |
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| US10323978B2 (en) | 2015-04-20 | 2019-06-18 | Panasonic Intellectual Property Management Co., Ltd. | Vibration visualization element including optical member |
| US10655952B2 (en) | 2016-06-14 | 2020-05-19 | Panasonic Intellectual Property Management Co., Ltd. | Visualizer, measurement system, and measurement method |
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|---|---|
| JP4912949B2 (en) | 2012-04-11 |
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