JP2005069983A - Displacement recording sensor - Google Patents

Displacement recording sensor Download PDF

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JP2005069983A
JP2005069983A JP2003303290A JP2003303290A JP2005069983A JP 2005069983 A JP2005069983 A JP 2005069983A JP 2003303290 A JP2003303290 A JP 2003303290A JP 2003303290 A JP2003303290 A JP 2003303290A JP 2005069983 A JP2005069983 A JP 2005069983A
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passive
displacement
movable member
friction
positive
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JP4206868B2 (en
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Keiichi Okada
敬一 岡田
Masato Shiraishi
理人 白石
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Shimizu Construction Co Ltd
Shimizu Corp
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Shimizu Construction Co Ltd
Shimizu Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a displacement recording sensor, capable of simply and inexpensively measuring a maximum displacement in both the positive and negative directions with the initial position of an object to be measured, as a zero point, and of recording the same. <P>SOLUTION: A rod 6, coupled to the object that is pivoted by rod supporting members 9, 9, installed in a protective case 7, is capable of sliding in the axial direction (positive-negative directions). A movable member 2 is mounted on the intermediate portion of the rod 6, and the member 2 slides on a friction member 5 mounted in a protection case 7 in the positive-negative directions, in conformity with the movement of the rod 6. A first passive member 3 and a second passive member 4 are installed on the friction member 5 sandwiching the movable member 2 in between the passive members 3, 4, and then slide on friction member 5 in the respective positive and negative directions along guide rails 8, 8 fixed in the protection case 7, by being pushed by the movable member 2. Recesses to fit with the movable member 2 are respectively formed on surfaces, where the first 3 and the second passive member 4 contact with the movable member 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、測定対象物の変位を検出するとともに、過去の最大変位を記憶するセンサに関する。   The present invention relates to a sensor that detects a displacement of a measurement object and stores a past maximum displacement.

地震や強風等に対する構造物の応答性状や性能劣化の情報を取得するために、地震や強風等による揺れを検出するセンサとトリガー装置とデータ収録装置を備え、常時監視を行うシステムが従来から使用されている。しかし、このようなシステムは非常に高価であることに加えて、システムの保守点検等のランニングコストがかかるという問題がある。
これに対して、より簡便な装置として、構造物の最大変形のみ記録する装置が開発されている。例えば、特許文献１では、複数の導電性要素を横並び状態に配置するとともに、構造物の変形量に応じてこれら導電性要素を順次切断させることにより、過去に生じた最大変位を知ることができる装置が考案されている。また、特許文献２では、構造物の一方向の最大変位を検出する装置が考案されている。
特開平９−９６５７６号公報 （第３−６頁、第１図） 特開２００１−２２７９３６号公報 （第３−６頁、第８図） In order to acquire information on the response characteristics and performance deterioration of structures against earthquakes and strong winds, etc., a system that always has a sensor, trigger device, and data recording device that detects shaking due to earthquakes and strong winds, etc., has been used. Has been. However, in addition to being very expensive, such a system is problematic in that it requires running costs such as system maintenance and inspection.
On the other hand, as a simpler apparatus, an apparatus that records only the maximum deformation of a structure has been developed. For example, in Patent Document 1, a plurality of conductive elements are arranged side by side, and the maximum displacement that occurred in the past can be known by sequentially cutting the conductive elements according to the deformation amount of the structure. A device has been devised. In Patent Document 2, an apparatus for detecting a maximum displacement in one direction of a structure is devised.
JP-A-9-96576 (page 3-6, FIG. 1) JP 2001-227936 A (page 3-6, FIG. 8)

しかしながら、特許文献1に開示された装置では、各導電性要素の弛み具合の設定や引張強度の設定条件によっては、各導電性要素の順次的な切断が的確に成されない場合が生じ、装置の信頼性を損ねる虞がある。また、一度、導電性要素が切断されてしまうと、導電性要素を交換しなければならない問題がある。さらに、当該装置では、導電性要素の伸び方向の変位は検出できるが、縮み方向の変位は検出できないという問題もある。一方、特許文献２に開示された装置は、構造物の伸び方向の変位を検出するように設定した場合、縮み方向の変位を検出することができず、逆に、構造物の縮み方向の変位を検出するように設定した場合、伸び方向の変位を検出することができないという問題がある。
地震や強風等に対する構造物の応答性状や性能劣化の程度を明らかにする場合、構造物の初期位置をゼロ点とする正負両方向の変位履歴が必要となる。なぜならば、地震や強風等の振動特性と構造物の振動特性とが複雑に絡み合い、地震や強風等に対して構造物が初期位置から対称に揺れることは殆ど有り得ないからである。
本発明は、上述する問題点に鑑みてなされたもので、測定対象物の初期位置をゼロ点とする正負両方向の最大変位を簡便且つ安価に測定・記録することができる変位記録センサを提供することを目的とする。 However, in the apparatus disclosed in Patent Document 1, the sequential cutting of each conductive element may not be accurately performed depending on the setting condition of the slackness and tensile strength of each conductive element. There is a risk of impairing reliability. In addition, once the conductive element is cut, there is a problem that the conductive element must be replaced. Further, the apparatus can detect the displacement in the extending direction of the conductive element, but cannot detect the displacement in the contracting direction. On the other hand, when the apparatus disclosed in Patent Document 2 is set to detect displacement in the expansion direction of the structure, it cannot detect displacement in the contraction direction, and conversely, displacement in the contraction direction of the structure. When it is set to detect, there is a problem that the displacement in the extension direction cannot be detected.
When clarifying the responsiveness of structures and the degree of performance degradation against earthquakes and strong winds, displacement history in both positive and negative directions with the initial position of the structure as the zero point is required. This is because the vibration characteristics of an earthquake or strong wind and the vibration characteristics of the structure are intricately intertwined, and the structure hardly swings symmetrically from the initial position with respect to the earthquake or strong wind.
The present invention has been made in view of the above-described problems, and provides a displacement recording sensor that can measure and record the maximum displacement in both positive and negative directions with the initial position of a measurement object as a zero point easily and inexpensively. For the purpose.

上記目的を達成するため、本発明に係る変位記録センサでは、保護ケース内に設置された摩擦部材と、測定対象物の変形に応じて前記摩擦部材上を直線的に摺動する可動部材と、前記可動部材の一方向の動きにのみ連動して前記摩擦部材上を前記一方向に摺動する第一受動部材と、前記可動部材の他方向の動きにのみ連動して前記摩擦部材上を前記他方向に摺動する第二受動部材とを備えることを特徴とする。
本発明では、測定対象物の変形に応じて摩擦部材上を可動部材が直線的に摺動すると、第一受動部材が前記可動部材の一方向（以下、正方向と呼ぶ。）の動きにのみ連動して摺動し、第二受動部材が前記可動部材の他方向（以下、負方向と呼ぶ。）の動きにのみ連動して摺動するため、前記第一受動部材は正方向の最大変位位置を、前記第二受動部材は負方向の最大変位位置をそれぞれ保持することができる。また、前記可動部材は現在の変位位置を示している。なお、前記可動部材と前記摩擦部材との間、前記第一受動部材および前記第二受動部材と前記摩擦部材との間には適度な摩擦力が働いているため、前記可動部材、前記第一受動部材、前記第二受動部材の移動に伴うオーバーシュートは発生しない。 In order to achieve the above object, in the displacement recording sensor according to the present invention, a friction member installed in a protective case, a movable member that linearly slides on the friction member in accordance with the deformation of the measurement object, A first passive member that slides in the one direction on the friction member in conjunction with movement in one direction of the movable member; and the friction member on the friction member in association with movement in another direction of the movable member. And a second passive member that slides in the other direction.
In the present invention, when the movable member linearly slides on the friction member according to the deformation of the measurement object, the first passive member moves only in one direction of the movable member (hereinafter referred to as the positive direction). Since the second passive member slides in conjunction with each other, and the second passive member slides in conjunction only with the movement in the other direction of the movable member (hereinafter referred to as the negative direction), the first passive member has a maximum positive displacement. The position of the second passive member can hold the maximum displacement position in the negative direction. The movable member indicates the current displacement position. In addition, since moderate frictional force is acting between the movable member and the friction member, and between the first passive member and the second passive member and the friction member, the movable member, the first The overshoot accompanying the movement of the passive member and the second passive member does not occur.

また、本発明では、前記摩擦部材に電圧入力端子を設けるとともに、前記可動部材と前記第一受動部材と前記第二受動部材に電圧出力端子をそれぞれ設け、前記電圧入力端子と前記各電圧出力端子との間の電圧値によって、前記可動部材、前記第一受動部材、前記第二受動部材それぞれの位置を検出することが好ましい。
前記可動部材、前記第一受動部材、前記第二受動部材の移動量（測定対象物の現在の変位、正方向の最大変位、負方向の最大変位）と、前記電圧入力端子と前記各電圧出力端子との間の電圧値とは比例関係にある。従って、予め、当該移動量と当該電圧値との関係式を求めておけば、前記可動部材、前記第一受動部材、前記第二受動部材それぞれについて、現在の電圧値を計測し、初期位置における電圧値との差分をとれば、測定対象物の現在の変位、正方向の最大変位、負方向の最大変位を精確に検出することができる。
なお、前記電圧入力端子と前記各電圧出力端子との間の電圧値を常時計測しておけば、測定対象物の正負方向の最大変位と現在の変位の時刻歴データを得ることができる。 In the present invention, the friction member is provided with a voltage input terminal, and the movable member, the first passive member, and the second passive member are provided with voltage output terminals, respectively, and the voltage input terminal and each voltage output terminal are provided. It is preferable that the position of each of the movable member, the first passive member, and the second passive member is detected by a voltage value between the first and second passive members.
Movement amounts of the movable member, the first passive member, and the second passive member (current displacement of the measurement object, maximum positive displacement, maximum negative displacement), the voltage input terminal, and each voltage output The voltage value between the terminals is proportional. Therefore, if a relational expression between the movement amount and the voltage value is obtained in advance, the current voltage value is measured for each of the movable member, the first passive member, and the second passive member, and the initial position is determined. By taking the difference from the voltage value, it is possible to accurately detect the current displacement of the measurement object, the maximum displacement in the positive direction, and the maximum displacement in the negative direction.
If the voltage value between the voltage input terminal and each voltage output terminal is always measured, the maximum displacement in the positive / negative direction of the measurement object and the time history data of the current displacement can be obtained.

さらに、本発明に係る変位記録センサでは、前記可動部材と前記第一受動部材と前記第二受動部材それぞれに位置を示すための指針を設けるとともに、前記保護ケースに変位目盛りを設けてもよい。
本発明では、前記可動部材と前記第一受動部材と前記第二受動部材それぞれに指針を設けるとともに、前記保護ケースに変位目盛りを設けることにより、測定対象物の正負方向の最大変位と現在の変位を直接目視によって確認することができる。 Furthermore, in the displacement recording sensor according to the present invention, a pointer for indicating a position may be provided on each of the movable member, the first passive member, and the second passive member, and a displacement scale may be provided on the protective case.
In the present invention, the movable member, the first passive member, and the second passive member are each provided with a pointer, and the protective case is provided with a displacement scale so that the maximum displacement in the positive / negative direction of the measurement object and the current displacement are measured. Can be confirmed directly by visual inspection.

本発明によれば、第一受動部材が可動部材の一方向（正方向）の動きにのみ連動して摺動し、第二受動部材が可動部材の他方向（負方向）の動きにのみ連動して摺動するため、測定対象物の初期位置をゼロ点とする正負両方向の最大変位を簡便且つ安価に測定・記録することができる変位記録センサを実現することができる。その結果、地震や強風等に対する構造物の応答性状や性能劣化の情報を取得することが可能となる。   According to the present invention, the first passive member slides in conjunction only with movement in one direction (positive direction) of the movable member, and the second passive member is interlocked only with movement in the other direction (negative direction) of the movable member. Therefore, it is possible to realize a displacement recording sensor that can easily and inexpensively measure and record the maximum displacement in both positive and negative directions with the initial position of the measurement object as the zero point. As a result, it becomes possible to acquire information on the response characteristics and performance degradation of structures to earthquakes and strong winds.

以下、本発明に係る変位記録センサの実施形態について、図面に基いて説明する。
図１（ａ）は、本発明に係る変位記録センサの第一の実施形態を示す平断面図であり、図１（ｂ）はその側断面図である。
図１に示すように、本実施形態による変位記録センサ１では、図示していない測定対象物に先端を連結されたロッド６が、箱状の保護ケース７内に設置されたロッド支持部９、９に軸支され、軸方向（正負方向）に滑動できるようになっている。ロッド６の中間部には、直方体状の可動部材２が装着されており、ロッド６の動きに合わせて、保護ケース７内に設置された板状の摩擦部材５上を、可動部材２が正負方向に摺動する。
また、摩擦部材５上には、可動部材２を挟んで、板状の第一受動部材３と板状の第二受動部材４が設置されており、第一受動部材３と第二受動部材４は、保護ケース７内に固定されたガイドレール８、８に沿って、摩擦部材５上を可動部材２に押されて正負それぞれの方向に摺動する。
なお、可動部材２と第一受動部材３と第二受動部材４の摺動面には、摺動時の摩擦抵抗を大きくするため、突設部２ｂ、３ｂ、４ｂが設けられており、可動部材２、第一受動部材３、第二受動部材４は、突設部２ｂ、３ｂ、４ｂを介して、摩擦部材５とそれぞれ接触している。また、第一受動部材３と第二受動部材４が可動部材２と当接する面には、可動部材２と嵌合するための凹部がそれぞれ形成されている。
加えて、本実施形態による変位記録センサ１では、摩擦部材５の両端に電圧入力端子＋Ｔｉｎと−Ｔｉｎがリード線５ｃを介して設けられるとともに、可動部材２と第一受動部材３と第二受動部材４には電圧出力端子Ｔｏｕｔ、＋Ｔｏｕｔ、−Ｔｏｕｔがリード線２ｃ、３ｃ、４ｃを介して設けられている。
また、可動部材２と第一受動部材３と第二受動部材４上には、それぞれ位置を示すための指針２ａ、３ａ、４ａが設けられ、保護ケース７上には変位目盛り１０が設けられている。 Embodiments of a displacement recording sensor according to the present invention will be described below with reference to the drawings.
Fig.1 (a) is a plane sectional view which shows 1st embodiment of the displacement recording sensor based on this invention, FIG.1 (b) is the sectional side view.
As shown in FIG. 1, in the displacement recording sensor 1 according to the present embodiment, a rod 6 having a tip connected to a measurement object (not shown) is installed in a box-shaped protective case 7, 9 is supported by the shaft 9 and can slide in the axial direction (positive and negative directions). A rectangular parallelepiped movable member 2 is attached to an intermediate portion of the rod 6, and the movable member 2 is positive or negative on the plate-like friction member 5 installed in the protective case 7 according to the movement of the rod 6. Slide in the direction.
Further, on the friction member 5, a plate-like first passive member 3 and a plate-like second passive member 4 are installed with the movable member 2 interposed therebetween, and the first passive member 3 and the second passive member 4. Are slid in the positive and negative directions along the guide rails 8, 8 fixed in the protective case 7, pushed on the friction member 5 by the movable member 2.
The sliding surfaces of the movable member 2, the first passive member 3 and the second passive member 4 are provided with projecting portions 2b, 3b and 4b in order to increase the frictional resistance during sliding. The member 2, the first passive member 3, and the second passive member 4 are in contact with the friction member 5 through the projecting portions 2b, 3b, and 4b, respectively. Moreover, the recessed part for fitting with the movable member 2 is formed in the surface where the 1st passive member 3 and the 2nd passive member 4 contact | abut with the movable member 2, respectively.
In addition, in the displacement recording sensor 1 according to the present embodiment, the voltage input terminals + T in and −T in are provided at both ends of the friction member 5 through the lead wires 5c, and the movable member 2, the first passive member 3, and the second The two passive members 4 are provided with voltage output terminals T out , + T out , and −T out through lead wires 2c, 3c, and 4c.
On the movable member 2, the first passive member 3, and the second passive member 4, pointers 2a, 3a, and 4a for indicating positions are provided, and a displacement scale 10 is provided on the protective case 7. Yes.

次に、本実施形態による変位記録センサ１の作用について説明する。
可動部材２と第一受動部材３と第二受動部材４が、互いに嵌合した状態で摩擦部材５の中央に静止している状態を、変位記録センサ１の初期静止状態とする。測定対象物が初期静止状態から正方向に変形する場合、当該測定対象物が正方向に変形すると、当該測定対象物に連結されたロッド６が正方向に滑動する。これに伴い、ロッド６の中間部に装着された可動部材２は、摩擦部材５上を正方向に摺動する。同時に、第一受動部材３は、可動部材２に押されて摩擦部材５上を正方向に摺動する。
次に、当該測定対象物が正方向から負方向へ変形する場合、当該測定対象物が負方向に変形すると、当該測定対象物に連結されたロッド６が負方向に滑動する。これに伴い、ロッド６の中間部に装着された可動部材２は、摩擦部材５上を負方向に摺動する。この際、可動部材２が初期位置よりもさらに負側に摺動する場合、可動部材２は第二受動部材４に当接し、第二受動部材４の凹部と嵌合する。そして、第二受動部材４は、可動部材２に押されて摩擦部材５上を負方向に摺動する。この間、第一受動部材３は、正方向の最大変位を保持した状態で、摩擦部材５上に静止している。
その後再び、当該測定対象物が正方向へ変形する場合、可動部材２は、摩擦部材５上を正方向に摺動する。この間、第二受動部材４は、負方向の最大変位を保持した状態で、摩擦部材５上に静止している。そして、可動部材２が過去の正方向の最大変位よりもさらに正方向へ摺動する場合、可動部材２は、第一受動部材３に当接して、第一受動部材３を押しながら摩擦部材５上を正方向に摺動する。
さらに再び、当該測定対象物が負方向へ変形する場合、可動部材２は、摩擦部材５上を負方向に摺動する。この間、第一受動部材３は、正方向の最大変位を保持した状態で、摩擦部材５上に静止している。そして、可動部材２が過去の負方向の最大変位よりもさらに負方向へ摺動する場合、可動部材２は、第二受動部材４に当接して、第二受動部材４を押しながら摩擦部材５上を負方向に摺動する。
以後、当該測定対象物が静止するまで、変位記録センサ１は上記の動きを繰り返す。そして、第一受動部材３と第二受動部材４の最終位置が、当該測定対象物の正方向の最大変位と負方向の最大変位を示していることになる。なお、第一の実施形態による変位記録センサ１では、可動部材２と摩擦部材５との間、第一受動部材３および第二受動部材４と摩擦部材５との間には、突設部２ｂ、３ｂ、４ｂによる適度な摩擦力が働いているため、可動部材２、第一受動部材３、第二受動部材４の移動に伴うオーバーシュートは発生しない。 Next, the operation of the displacement recording sensor 1 according to the present embodiment will be described.
The state in which the movable member 2, the first passive member 3, and the second passive member 4 are stationary at the center of the friction member 5 while being fitted to each other is referred to as an initial stationary state of the displacement recording sensor 1. When the measurement object is deformed in the positive direction from the initial stationary state, when the measurement object is deformed in the positive direction, the rod 6 connected to the measurement object slides in the positive direction. Accordingly, the movable member 2 attached to the intermediate portion of the rod 6 slides on the friction member 5 in the positive direction. At the same time, the first passive member 3 is pushed by the movable member 2 and slides on the friction member 5 in the positive direction.
Next, when the measurement object is deformed from the positive direction to the negative direction, when the measurement object is deformed in the negative direction, the rod 6 connected to the measurement object slides in the negative direction. Accordingly, the movable member 2 attached to the intermediate portion of the rod 6 slides on the friction member 5 in the negative direction. At this time, when the movable member 2 slides further to the negative side than the initial position, the movable member 2 comes into contact with the second passive member 4 and engages with the concave portion of the second passive member 4. The second passive member 4 is pushed by the movable member 2 and slides on the friction member 5 in the negative direction. During this time, the first passive member 3 is stationary on the friction member 5 while maintaining the maximum displacement in the positive direction.
Thereafter, when the measurement object deforms in the positive direction again, the movable member 2 slides on the friction member 5 in the positive direction. During this time, the second passive member 4 is stationary on the friction member 5 while maintaining the maximum displacement in the negative direction. When the movable member 2 slides further in the positive direction than the past maximum displacement in the positive direction, the movable member 2 contacts the first passive member 3 and presses the first passive member 3 while pressing the friction member 5. Slide up in the positive direction.
Furthermore, when the measurement object is deformed in the negative direction again, the movable member 2 slides on the friction member 5 in the negative direction. During this time, the first passive member 3 is stationary on the friction member 5 while maintaining the maximum displacement in the positive direction. When the movable member 2 slides further in the negative direction than the past maximum displacement in the negative direction, the movable member 2 comes into contact with the second passive member 4 and presses the second passive member 4 while pressing the friction member 5. Slide up in the negative direction.
Thereafter, the displacement recording sensor 1 repeats the above movement until the measurement object is stationary. The final positions of the first passive member 3 and the second passive member 4 indicate the maximum displacement in the positive direction and the maximum displacement in the negative direction of the measurement object. In the displacement recording sensor 1 according to the first embodiment, the protruding portion 2b is provided between the movable member 2 and the friction member 5, and between the first passive member 3 and the second passive member 4 and the friction member 5. Since an appropriate frictional force by 3b and 4b is working, overshoot accompanying the movement of the movable member 2, the first passive member 3 and the second passive member 4 does not occur.

図２は、第一の実施形態の回路図を示したものである。
図２に示すように、正負方向の電気抵抗値がＲである摩擦部材５両端の電圧入力端子＋Ｔｉｎと−Ｔｉｎとの間に電圧Ｖ０を負荷すると、電圧入力端子−Ｔｉｎと、可動部材２、第一受動部材３、第二受動部材４の電圧出力端子Ｔｏｕｔ、＋Ｔｏｕｔ、−Ｔｏｕｔとの間の電圧値はそれぞれＶｏｕｔ、＋Ｖｏｕｔ、−Ｖｏｕｔとなる。仮に、可動部材２、第一受動部材３、第二受動部材４それぞれの初期位置が摩擦部材５の中央であり、可動部材２、第一受動部材３、第二受動部材４それぞれが有する電気抵抗値がゼロであるとすると、可動部材２、第一受動部材３、第二受動部材４それぞれの初期電圧値はＶ０／２となる。一方、可動部材２、第一受動部材３、第二受動部材４の移動量（測定対象物の現在の変位、正方向の最大変位、負方向の最大変位）と、電圧入力端子−Ｔｉｎと電圧出力端子Ｔｏｕｔ、＋Ｔｏｕｔ、−Ｔｏｕｔとの間の電圧値とは比例関係にある。従って、可動部材２、第一受動部材３、第二受動部材４それぞれの電圧値Ｖｏｕｔ、＋Ｖｏｕｔ、−Ｖｏｕｔと初期電圧値Ｖ０／２との差分を求めれば、測定対象物の現在の変位、正方向の最大変位、負方向の最大変位を精確に検出することができる。
なお、電圧入力端子−Ｔｉｎと電圧出力端子Ｔｏｕｔ、＋Ｔｏｕｔ、−Ｔｏｕｔとの間の電圧値を常時計測しておけば、測定対象物の正負方向の最大変位と現在の変位の時刻歴データを得ることができる。図３は、常時計測によって得られた正負方向の最大変位の時刻歴変化を示したものである。 FIG. 2 shows a circuit diagram of the first embodiment.
As shown in FIG. 2, when a voltage V 0 is applied between the voltage input terminals + T in and −T in at both ends of the friction member 5 whose positive and negative electric resistance values are R, the voltage input terminal −T in and The voltage values between the voltage output terminals T out , + T out , and −T out of the movable member 2, the first passive member 3, and the second passive member 4 are V out , + V out , and −V out , respectively. Temporarily, the initial position of each of the movable member 2, the first passive member 3, and the second passive member 4 is the center of the friction member 5, and the electric resistance that each of the movable member 2, the first passive member 3, and the second passive member 4 has. If the value is zero, the initial voltage values of the movable member 2, the first passive member 3, and the second passive member 4 are V 0/2 . On the other hand, the amount of movement of the movable member 2, the first passive member 3, and the second passive member 4 (current displacement of the measurement object, maximum displacement in the positive direction, maximum displacement in the negative direction), and the voltage input terminal -T in The voltage values between the voltage output terminals T out , + T out , and −T out are in a proportional relationship. Therefore, the movable member 2, the first receiving member 3, the second receiving member 4 respective voltage values V out, + V out, by obtaining a difference between -V out and the initial voltage value V 0/2, of the measuring object currently The maximum displacement in the positive direction, the maximum displacement in the negative direction can be accurately detected.
If the voltage value between the voltage input terminal −T in and the voltage output terminal T out , + T out , −T out is always measured, the maximum displacement in the positive / negative direction of the measurement object and the current displacement time Historical data can be obtained. FIG. 3 shows the time history change of the maximum displacement in the positive and negative directions obtained by constant measurement.

第一の実施形態による変位記録センサ１では、測定対象物の変形に応じて摩擦部材５上を可動部材２が直線的に摺動すると、第一受動部材３が可動部材２に押されて正方向に摺動し、第二受動部材４が可動部材３に押されて負方向に摺動するため、第一受動部材３は正方向の最大変位位置を、第二受動部材４は負方向の最大変位位置をそれぞれ保持することができる。
また、第一の実施形態による変位記録センサ１では、電圧入力端子−Ｔｉｎと電圧出力端子Ｔｏｕｔ、＋Ｔｏｕｔ、−Ｔｏｕｔとの間の電圧値を計測することにより、測定対象物の現在の変位、正方向の最大変位、負方向の最大変位を精確に検出することができる。
さらに、第一の実施形態による変位記録センサ１では、可動部材２と第一受動部材３と第二受動部材４それぞれに指針２ａ、３ａ、４ａが設けられ、保護ケース７上には変位目盛り１０が設けられているため、測定対象物の正負方向の最大変位と現在の変位を直接目視によって確認することができる。 In the displacement recording sensor 1 according to the first embodiment, when the movable member 2 linearly slides on the friction member 5 according to the deformation of the measurement object, the first passive member 3 is pushed by the movable member 2 to be positive. Since the second passive member 4 is pushed by the movable member 3 and slides in the negative direction, the first passive member 3 has the maximum displacement position in the positive direction, and the second passive member 4 has the negative direction. Each maximum displacement position can be held.
In the displacement recording sensor 1 according to the first embodiment, the current value of the measurement object is measured by measuring the voltage value between the voltage input terminal −T in and the voltage output terminals T out , + T out , −T out. The maximum displacement in the positive direction, the maximum displacement in the negative direction can be accurately detected.
Further, in the displacement recording sensor 1 according to the first embodiment, the pointers 2 a, 3 a, and 4 a are provided on the movable member 2, the first passive member 3, and the second passive member 4, respectively, and the displacement scale 10 is provided on the protective case 7. Therefore, the maximum displacement in the positive and negative directions and the current displacement of the measurement object can be directly visually confirmed.

図４（ａ）は、本発明に係る変位記録センサの第二の実施形態を示す平断面図であり、図４（ｂ）はその側断面図である。
第二の実施形態による変位記録センサ１１では、第一の実施形態による変位記録センサ１を構成する摩擦部材５に代えて、第一摩擦部材１５０と第二摩擦部材１５１と第三摩擦部材１５２が保護ケース１７内に並列に設置されている。また、第一摩擦部材１５０、第二摩擦部材１５１、第三摩擦部材１５２には、導電線１２ｄ、１３ｄ、１４ｄがそれぞれ並行に設けられている。
保護ケース１７内に設置されたロッド支持部１９、１９に軸支されたロッド１６が軸方向に滑動すると、ロッド１６中間部に装着された直方体状の可動部材１２が、ロッド１６の動きに合わせて、第一摩擦部材１５０および導電線１２ｄ上を正負方向に摺動する。
また、可動部材１２を挟んで、板状の第一受動部材１３が第二摩擦部材１５１および導電線１３ｄ上に、板状の第二受動部材１４が第三摩擦部材１５２および導電線１４ｄ上にそれぞれ設置されている。可動部材１２が第一摩擦部材１５０および導電線１２ｄ上を正負方向に摺動すると、第一受動部材１３は可動部材１２に押されて第二摩擦部材１５１および導電線１３ｄ上を正方向に、第二受動部材１４は可動部材１２に押されて第三摩擦部材１５２および導電線１４ｄ上を負方向に、それぞれガイドレール１８、１８に沿って摺動する。
なお、可動部材１２と第一受動部材１３と第二受動部材１４の摺動面には、摺動時の摩擦抵抗を大きくするとともに、導電線１２ｄ、１３ｄ、１４ｄとの接触端子として、突設部１２ｂ、１３ｂ、１４ｂが設けられており、可動部材１２、第一受動部材１３、第二受動部材１４は、突設部１２ｂ、１３ｂ、１４ｂを介して、第一摩擦部材１５０と導電線１２ｄ、第二摩擦部材１５１と導電線１３ｄ、第三摩擦部材１５２と導電線１４ｄとそれぞれ接触している。
さらに、本実施形態による変位記録センサ１１では、第一摩擦部材１５０、第二摩擦部材１５１、第三摩擦部材１５２の両端に電圧入力端子＋Ｔｉｎと−Ｔｉｎがリード線１５ｃを介して設けられるとともに、導電線１２ｄ、１３ｄ、１４ｄの端部には電圧出力端子Ｔｏｕｔ、＋Ｔｏｕｔ、−Ｔｏｕｔがリード線１２ｃ、１３ｃ、１４ｃを介して設けられている。
また、可動部材１２と第一受動部材１３と第二受動部材１４上にはそれぞれ位置を示すための指針１２ａ、１３ａ、１４ａが設けられ、保護ケース１７上には変位目盛り２０が設けられている。 FIG. 4 (a) is a plan sectional view showing a second embodiment of the displacement recording sensor according to the present invention, and FIG. 4 (b) is a side sectional view thereof.
In the displacement recording sensor 11 according to the second embodiment, instead of the friction member 5 constituting the displacement recording sensor 1 according to the first embodiment, a first friction member 150, a second friction member 151, and a third friction member 152 are provided. The protective case 17 is installed in parallel. The first friction member 150, the second friction member 151, and the third friction member 152 are provided with conductive wires 12d, 13d, and 14d, respectively, in parallel.
When the rod 16 pivotally supported by the rod support portions 19, 19 installed in the protective case 17 slides in the axial direction, the rectangular parallelepiped movable member 12 attached to the intermediate portion of the rod 16 matches the movement of the rod 16. The first friction member 150 and the conductive wire 12d slide in the positive and negative directions.
Further, with the movable member 12 sandwiched therebetween, the plate-like first passive member 13 is on the second friction member 151 and the conductive wire 13d, and the plate-like second passive member 14 is on the third friction member 152 and the conductive wire 14d. Each is installed. When the movable member 12 slides on the first friction member 150 and the conductive wire 12d in the positive and negative directions, the first passive member 13 is pushed by the movable member 12 and the second friction member 151 and the conductive wire 13d on the positive direction. The second passive member 14 is pushed by the movable member 12 and slides on the third friction member 152 and the conductive wire 14d in the negative direction along the guide rails 18 and 18, respectively.
Note that the sliding surfaces of the movable member 12, the first passive member 13, and the second passive member 14 have a frictional resistance during sliding and are provided as contact terminals with the conductive wires 12d, 13d, and 14d. The parts 12b, 13b, and 14b are provided, and the movable member 12, the first passive member 13, and the second passive member 14 are connected to the first friction member 150 and the conductive wire 12d via the projecting portions 12b, 13b, and 14b. The second friction member 151 and the conductive wire 13d are in contact with the third friction member 152 and the conductive wire 14d, respectively.
Furthermore, in the displacement recording sensor 11 according to the present embodiment, the voltage input terminals + T in and −T in are provided via the lead wires 15 c at both ends of the first friction member 150, the second friction member 151, and the third friction member 152. In addition, voltage output terminals T out , + T out , and −T out are provided at the end portions of the conductive lines 12d, 13d, and 14d via lead wires 12c, 13c, and 14c.
In addition, pointers 12 a, 13 a, and 14 a for indicating positions are provided on the movable member 12, the first passive member 13, and the second passive member 14, respectively, and a displacement scale 20 is provided on the protective case 17. .

図５は、第二の実施形態の回路図を示したものである。
図５に示すように、電気抵抗値がＲ０である第一摩擦部材１５０、電気抵抗値がＲ１である第二摩擦部材１５１、電気抵抗値がＲ２である第三摩擦部材１５２それぞれの両端に電圧Ｖ０を負荷すると、電圧入力端子−Ｔｉｎと、可動部材１２、第一受動部材１３、第二受動部材１４の電圧出力端子Ｔｏｕｔ、＋Ｔｏｕｔ、−Ｔｏｕｔとの間の電圧値はそれぞれＶｏｕｔ、＋Ｖｏｕｔ、−Ｖｏｕｔとなる。本実施形態においても、可動部材１２、第一受動部材１３、第二受動部材１４それぞれの電圧値Ｖｏｕｔ、＋Ｖｏｕｔ、−Ｖｏｕｔと初期電圧値との差分を求めれば、測定対象物の現在の変位、正方向の最大変位、負方向の最大変位を精確に検出することができる。 FIG. 5 shows a circuit diagram of the second embodiment.
As shown in FIG. 5, a voltage is applied across the first friction member 150 having an electric resistance value R0, the second friction member 151 having an electric resistance value R1, and the third friction member 152 having an electric resistance value R2. When V 0 is loaded, the voltage values between the voltage input terminal −T in and the voltage output terminals T out , + T out , −T out of the movable member 12, the first passive member 13, and the second passive member 14 are respectively V out , + V out , and −V out are obtained. Also in the present embodiment, if the differences between the voltage values V out , + V out , −V out and the initial voltage values of the movable member 12, the first passive member 13, and the second passive member 14 are obtained, the current object of measurement is obtained. The maximum displacement in the positive direction, the maximum displacement in the negative direction can be accurately detected.

第二の実施形態による変位記録センサ１１では、第一摩擦部材１５０、第二摩擦部材１５１、第三摩擦部材１５２に導電線１２ｄ、１３ｄ、１４ｄを並設し、可動部材１２、第一受動部材１３、第二受動部材１４の突設部１２ｂ、１３ｂ、１４ｂを接触端子とすることにより、可動部材１２、第一受動部材１３、第二受動部材１４にそれぞれリード線を取り付ける必要がなくなる。これにより、第一の実施形態による変位記録センサ１に比べて、リード線の取り回しが楽になる。   In the displacement recording sensor 11 according to the second embodiment, the first friction member 150, the second friction member 151, and the third friction member 152 are provided with conductive wires 12d, 13d, and 14d in parallel, and the movable member 12 and the first passive member. 13. By using the projecting portions 12b, 13b, 14b of the second passive member 14 as contact terminals, there is no need to attach lead wires to the movable member 12, the first passive member 13, and the second passive member 14, respectively. Thereby, compared with the displacement recording sensor 1 by 1st embodiment, handling of a lead wire becomes easy.

本発明に係る変位記録センサの第一の実施形態を示す図である。It is a figure which shows 1st embodiment of the displacement recording sensor which concerns on this invention. 本発明に係る変位記録センサの第一の実施形態の回路図である。It is a circuit diagram of a first embodiment of a displacement recording sensor according to the present invention. 測定対象物の正負方向の最大変位の時刻歴変化を示す図である。It is a figure which shows the time history change of the maximum displacement of the measurement object in the positive / negative direction. 本発明に係る変位記録センサの第二の実施形態を示す図である。It is a figure which shows 2nd embodiment of the displacement recording sensor which concerns on this invention. 本発明に係る変位記録センサの第二の実施形態の回路図である。It is a circuit diagram of a second embodiment of a displacement recording sensor according to the present invention.

符号の説明Explanation of symbols

１、１１ 変位記録センサ
２、１２ 可動部材
３、１３ 第一受動部材
４、１４ 第二受動部材
５ 摩擦部材
１５０ 第一摩擦部材
１５１ 第二摩擦部材
１５２ 第三摩擦部材
６、１６ ロッド
７、１７ 保護ケース
８、１８ ガイドレール
９、１９ ロッド支持部
１０、２０ 変位目盛り 1, 11 Displacement recording sensor 2, 12 Movable member 3, 13 First passive member 4, 14 Second passive member 5 Friction member 150 First friction member 151 Second friction member 152 Third friction member 6, 16 Rod 7, 17 Protective case 8, 18 Guide rail 9, 19 Rod support 10, 20 Displacement scale

Claims (3)

保護ケース内に設置された摩擦部材と、測定対象物の変形に応じて前記摩擦部材上を直線的に摺動する可動部材と、前記可動部材の一方向の動きにのみ連動して前記摩擦部材上を前記一方向に摺動する第一受動部材と、前記可動部材の他方向の動きにのみ連動して前記摩擦部材上を前記他方向に摺動する第二受動部材とを備えることを特徴とする変位記録センサ。   A friction member installed in a protective case, a movable member that linearly slides on the friction member in response to deformation of the measurement object, and the friction member in conjunction with movement in one direction of the movable member. A first passive member that slides in the one direction above, and a second passive member that slides in the other direction on the friction member only in conjunction with movement in the other direction of the movable member. Displacement recording sensor. 前記摩擦部材に電圧入力端子を設けるとともに、前記可動部材と前記第一受動部材と前記第二受動部材に電圧出力端子をそれぞれ設け、前記電圧入力端子と前記各電圧出力端子との間の電圧値によって、前記可動部材と前記第一受動部材と前記第二受動部材それぞれの位置を検出することを特徴とする請求項１に記載の変位記録センサ。   The friction member is provided with a voltage input terminal, and the movable member, the first passive member, and the second passive member are each provided with a voltage output terminal, and a voltage value between the voltage input terminal and each voltage output terminal. The displacement recording sensor according to claim 1, wherein the position of each of the movable member, the first passive member, and the second passive member is detected by: 前記可動部材と前記第一受動部材と前記第二受動部材それぞれに位置を示すための指針を設けるとともに、前記保護ケースに変位目盛りを設けることを特徴とする請求項１又は２に記載の変位記録センサ。   The displacement recording according to claim 1 or 2, wherein a pointer for indicating a position is provided on each of the movable member, the first passive member, and the second passive member, and a displacement scale is provided on the protective case. Sensor.
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JP2010101702A (en) * 2008-10-22 2010-05-06 Ckd Corp Differential pressure indicator
JP2014202591A (en) * 2013-04-04 2014-10-27 新日鉄住金エンジニアリング株式会社 Deformation amount recording device, brace device, and deformation amount recording method
KR20210065492A (en) * 2019-11-27 2021-06-04 (주)우립기전 Resistive type displacement sensor
KR102303852B1 (en) * 2019-11-27 2021-09-23 (주)우립기전 Resistive type displacement sensor

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