JP2005030786A - Method for measuring axle load and weight of bridge passing vehicle, and its device - Google Patents

Method for measuring axle load and weight of bridge passing vehicle, and its device Download PDF

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Publication number
JP2005030786A
JP2005030786A JP2003193080A JP2003193080A JP2005030786A JP 2005030786 A JP2005030786 A JP 2005030786A JP 2003193080 A JP2003193080 A JP 2003193080A JP 2003193080 A JP2003193080 A JP 2003193080A JP 2005030786 A JP2005030786 A JP 2005030786A
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Prior art keywords
vehicle
passing
axle
bridge
weight
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Japanese (ja)
Inventor
Hiroshi Katsuura
啓 勝浦
Takuya Arakawa
卓哉 荒川
Nobuo Amano
信雄 天野
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Mitsubishi Heavy Industries Ltd
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Mitsubishi Heavy Industries Ltd
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Priority to JP2003193080A priority Critical patent/JP2005030786A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for measuring an axle load and weight of a bridge passing vehicle, and its device which measure the vehicle weight in the noncontact state between the vehicle and a measuring instrument, to thereby dispense with traffic regulation at the vehicle weight measuring time, and to avoid breakage occurrence caused by contact of the measuring instrument with the vehicle, and also measure highly accurately the weight in every running state or the stopping state, for example, at the vehicle running time at constant speed, at the speed reducing time, at the speed increasing time or at the stopping time. <P>SOLUTION: In this weight measuring means of the bridge passing vehicle, a plurality of speed detection sensors are installed along a running route, to thereby detect the running speed of the passing vehicle. An axle detection sensor is installed on the running route, to thereby detect the axle position and the number of axles of the passing vehicle, and vehicle recognition of the passing vehicle is performed by the running speed and the axle position. A deformation quantity measuring means is installed on the bridge, to thereby measure the deformation quantity of the bridge in a plurality of times within a set measuring time corresponding to at least the axle of the passing vehicle recognized as a vehicle, and the weight of the passing vehicle is calculated with vehicle recognition data and measurement data of the deformation quantity corresponding to the axle. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、橋梁の走行路上を通過する車両の重量を計測する橋梁通過車両の車軸荷重及び重量計測方法及びその装置に関する。
【０００２】
【従来の技術】
高速道路や橋梁上の走行路上を通過する車両の重量を計測する技術として、特許文献１及び非特許文献１等の技術が提供されている。
前記特許文献１の技術においては、走行路の路面内に埋設された軸重検出器及び車両を１台づつ判別する車両検知器からの検出信号により、走行車両の変動軸重値を微小サンプリング時間毎に多数回計測して変動軸重値データ列とし、該変動軸重値データ列から走行中における車両の変動成分の周波数を算出し、該周波数と共通位相とを用いて車軸の変動成分の振幅と静止軸重値を求めるように構成されている。
【０００３】
一方、前記非特許文献１の技術においては、軸重Ｗ１〜Ｗｎ、軸間距離Ｌが明らかな試験車両を走行させて橋梁等の走行路における歪ε０（ｔ）を計測し、この実測歪ε０（ｔ）から、次の方法により車両の軸重を算出する。
先ず、歪の影響線ε（ｔ）を次の手順にて求める。
【０００４】
ｆ（ｘ）＝ａ０＋ａ１ｘ＋ａ２ｘ２＋…ａｎｘｍ（ａｉは係数） （１）
ε（ｔ）＝Ｗ１ｆ（ｘ＋ｈ１）＋Ｗ２ｆ（ｘ＋ｈ２）＋…Ｗｎｆ（ｘ＋ｈｎ）（２）
ｘ＝ｖｔ（ｘは基準位置、ｖ（車速）＝一定速度） （３）
【０００５】
ここで、ｈｉは基準位置ｘからの各軸のずれ量
上記（１）〜（３）式のよって歪ε（ｔ）を仮定し、該ε（ｔ）と前記実測歪ε０（ｔ）とを比較して最小２乗法を用いてε０（ｔ）−ε（ｔ）が最小となる係数ａ１〜ａｎを決定し、ｆ（ｘ）を決定する。
そして、軸重が未知の車両が計測走行路に来たときは、前記実測歪ε０（ｔ）とε（ｔ）との差（ε０（ｔ）−ε（ｔ））が少なくなるような軸重Ｗ１〜Ｗｎを求める。
【０００６】
【特許文献１】
特開平１１−１０１６８３号公報
【非特許文献１】
橋梁と基礎 ８７年４月号（４１〜４５頁）（走行車両の重量測定）
【０００７】
【発明が解決するための課題】
特許文献１の技術にあっては、軸重検出器及び車両検知器を走行路の路面内に埋設しているため、車両と軸重検出器及び車両検知器とが接触することとなり、軸重計測時には走行路の交通規制を行う必要があり、また軸重検出器及び車両検知器等の計測器具が車両に接触するため破損を起こし易い。
【０００８】
また、非特許文献１の技術にあっては、計測器具と車両とが非接触であるため前記のような不具合の発生は回避できるが、ｖ（車速）が一定速度のときの歪波形の形状全体から歪の影響線ε（ｔ）を算出しているため、増速時や減速時のように車速ｖに変動があったり車両が停止している際には、前記歪波形が崩れて軸重の計測が困難となり、車両重量の計測が実質的に不可能となる。
等の問題点を有している。
【０００９】
本発明はかかる従来技術の課題に鑑み、複数車両、複数車線の橋梁において車両と計測器具とを非接触状態にて車両重量を計測可能として車両重量計測時の交通規制を不要と計測器具の車両への接触にともなう破損の発生を回避し、さらには車両の一定速度での走行時、減速時、増速時、停止時等のあらゆる走行あるいは停車状態における重量を高精度で計測することを可能とした橋梁通過車両の車軸荷重及び重量計測方法及びその装置を提供することを目的とする。
【００１０】
【問題を解決するための手段】
本発明はかかる目的を達成するため、橋梁の走行路上を通過する車両の車軸荷重及び重量を計測する橋梁通過車両の車軸荷重及び重量計測方法において、前記走行路に沿って複数の速度検知用センサを所定間隔で設置して該速度検知用センサにより通過車両の走行速度を検出するとともに、前記走行路に車軸検知用センサを設置して車軸検知用センサにより前記通過車両の車軸位置及び車軸数を検出して、前記走行速度と車軸位置により前記通過車両の車両認識を行い、さらに前記橋梁に歪ゲージ等の変形量計測手段を設置して該変形量計測手段により通過車両による橋梁の変形量を設定された計測時間内に複数回、かつ少なくとも前記車両認識された通過車両の車軸に対応して計測し、前記車両認識データと車軸に対応した変形量の計測データに基づき前記通過車両の車軸荷重及び重量を算出することを特徴とする。
【００１１】
また、かかる方法発明を実施する装置として、橋梁の走行路上を通過する車両の車軸荷重及び重量を計測するように構成された橋梁通過車両の重量計測装置において、前記走行路に沿って所定間隔で複数個配設され通過車両の走行速度を検出する速度検知用センサと、前記走行路に１個または該走行路に沿って複数個配設され通過車両の車軸位置及び車軸数を検出する車軸検知用センサと、前記橋梁に１個または複数個配設され前記通過車両による橋梁の変形量を設定された計測時間内に複数回、かつ少なくとも前記車両認識された通過車両の車軸に対応して計測する変形量計測手段と、前記走行速度と車軸位置により前記通過車両の車両認識を行い該車両認識データと車軸に対応した変形量の計測データに基づき前記通過車両の重量を算出する制御演算装置とを備えてなることを特徴とする。
【００１２】
かかる発明において、好ましくは次のように構成する。
即ち、前記通過車両の走行速度の検出値と車軸位置及び車軸数の検出値とにより該通過車両の車軸間距離を算出し、該車軸間距離の分布状態によって車両認識を行う。
そして、かかる方法を行うための装置として、前記制御演算装置が、前記速度検知用センサによる前記通過車両の走行速度の検出値と前記車軸検知用センサによる車軸位置及び車軸数の検出値とにより該通過車両の車軸間距離を算出する車軸間距離算出手段と、該車軸間距離算出手段で算出された前記車軸間距離の分布状態によって車両認識を行う手段とを有するように構成した橋梁通過車両の重量計測装置とするのが好ましい。
前記変形量計測手段としては、歪ゲージを橋梁下部に取付ける手段、圧電素子を橋梁下部に取付ける手段、レーザ変位計を非接触で橋梁に取付ける手段、加速度計、速度計、接触式変位計等が好適である。
【００１３】
かかる発明によれば、速度検知用センサにより検出した橋梁上走行路における通過車両の走行速度と、車軸検知用センサによりにより検出した前記通過車両の車軸位置及び車軸数により前記通過車両の車両認識を行い、走行路に設置された変形量計測手段により、設定された計測時間内に複数回、かつ前記車両認識された通過車両の車軸に対応する部位及びその近傍において橋梁の歪等の変形量を計測し、制御演算装置において前記車両認識データと変形量の計測データに基づき前記通過車両の車軸荷重及び重量を算出するので、設定された計測時間内に通過する車両による橋梁の変形量を該車両の通過時間中に複数点に亘って時系列的に検出し、かかる時系列的な変形量計測データと前記通過車両の車両認識データとによって前記通過車両の車軸荷重及び重量を時系列的に算出することができる。
【００１４】
これにより、特許文献１のように軸荷重計測装置を走行路中に埋設することなく走行路の側部に該車両と非接触で以って車両の重量計測を行うことができるとともに、前記非特許文献１のように車両の増、減速時や停止時での重量計測が不可能となることなく、複数車両、複数車線の橋梁において車両の一定速度での走行時、減速時、増速時、さらには停止時のあらゆる走行あるいは停車状態における重量を高精度で計測することが可能となる。
【００１５】
また、前記制御演算装置において通過車両の走行速度の検出値と車軸位置及び車軸数の検出値とにより該通過車両の車軸間距離を算出して該車軸間距離の分布状態によって車両認識を行うので、該車軸間距離の計測長さと車種別の設定長さとを対比させることにより通過車両の車両認識を正確に行うことができて、この車両認識データと前記時系列的な歪計測データとを照合させることにより、車両の重量計測精度をさらに向上できる。
【００１６】
また本発明において好ましくは、前記走行路の一側、又は両側に設置した車両位置検知用距離センサにより各走行車線を通過する車両と該センサとの間の距離を計測し、該距離の計測値に基づき前記通過車両の走行車線を検知するように構成する。
そして、かかる方法を行うための装置として、前記走行路の一側、又は両側に配設され各走行車線を通過する車両と該センサとの間の距離を計測する車両位置検知用距離センサを備え、前記制御演算装置は前記車両位置検知用距離センサによる前記距離の計測値に基づき前記通過車両の走行車線を検知する手段を有するように構成した橋梁通過車両の重量計測装置とするのが好ましい。
【００１７】
このように構成すれば、走行路の一側、又は両側に設置した光電センサ等の車両位置検知用距離センサによって複数の走行車線における通過車両と該車両位置検知用距離センサとの距離を計測することにより、走行車線が複数の橋梁であっても、該走行車線を通過する車両毎に車軸荷重及び車両重量を検知することが可能となる。
【００１８】
【発明の実施の形態】
以下、本発明を図に示した実施例を用いて詳細に説明する。但し、この実施例に記載される構成部品の寸法、材質、形状、その相対配置などは特に特定的な記載が無い限り、この発明の範囲をそれのみに限定する趣旨ではなく単なる説明例に過ぎない。
【００１９】
図１は、本発明の実施例に係る橋梁通過車両の重量計測装置の制御ブロック図である。図２は前記実施例における橋梁走行路への計測器具の取付状態を示す要部側面図、図３は図２のＡ矢視図、図４は図３のＢ矢視図である。図５は車両位置検知用距離センサの他の例を示す正面図である。図６は速度検知用センサによる車両速度の検出方法の説明図、図７は車軸検知用センサによる車軸位置検出方法の説明図、図８は車両位置検知用距離センサによる複数車線での車両認識方法の説明図である。図９は前記実施例における橋梁通過車両の重量計測の制御フロー図である。
【００２０】
本発明の実施例に係る橋梁通過車両における重量計測装置の計測器具の取付状態を示す図２ないし図４において、１００は車軸間距離Ｌなる重量計測計測対象の車両、１０１は橋梁、１０２は該橋梁１０１上の走行路である。
１は光電センサからなる（他の型式のセンサでもよい）速度検知用センサで、前記走行路１０２の一側に該走行路１０２に沿って所定の間隔Ａで以って、ＳＶ１、ＳＶ２、ＳＶ３、ＳＶ４のように複数個配設されて、該走行路１０２を通過する車両１００の走行速度を後述のようにして検出し、後述する制御演算装置２０に入力するものである。
該速度検知用センサ１の設置間隔Ａは、車両１００の車軸間距離Ｌよりも大きく設定する。
【００２１】
２は光電センサからなる車軸検知用センサで、前記走行路１０２の一側に１個、あるいは図のように該走行路１０２に沿って所定間隔で以ってＳＪ１、ＳＪ２、ＳＪ３のように複数個配設されて、該走行路１０２を通過する車両１００の車軸位置及び車軸数を後述のようにして検出し、後述する制御演算装置２０に入力するものである。
尚、前記車軸検知用センサ２の光電センサに代えて、図５に示されるように、ビデオカメラ６を走行路１０２の一側に設置して、該ビデオカメラ６の画像から車軸の位置を検出することもできる。
【００２２】
３はレーザ変位計からなる車両位置検知用距離センサで、前記走行路１０２の一側にＳｋのように設置され、複数の走行車線を通過する車両１００と該車両位置検知用距離センサ３との距離を計測して後述する制御演算装置２０に入力するものである。
このように構成すれば、走行路１０２の一側、又は両側に設置した前記車両位置検知用距離センサ３によって複数の走行車線における通過車両１００と該車両位置検知用距離センサ３との距離を計測することにより、走行車線が複数の橋梁１０１であっても、該走行車線を通過する車両１００毎に車両重量を検知することが可能となる。
１０５は前記各センサ１，２，３からの光電信号を反射して制御演算装置２０の受信部に伝送するための反射板である。
【００２３】
４は歪ゲージで、前記橋梁１０１における走行路１０２裏側の車両通過時の歪が最も大きくなる部位に１個、あるいは図２に示されるように、該走行路１００の走行方向に沿ってＳＨ１、ＳＨ２、ＳＨ３のように複数個配設され，さらには図４に示されるように該走行路１００の幅方向にＳＨ１１、ＳＨ２１、ＳＨ３１、ＳＨ４１のように複数個配設され、前記通過車両１００の車軸に対応する部位及びその近傍において橋梁１０１の歪を計測し、設定された計測時間内に時系列的に計測し、後述する制御演算装置２０に入力するものである。
【００２４】
次に、図１及び図６ないし図９に基づき、かかる橋梁通過車両の重量計測装置の動作を説明する。
前記速度検知用センサ１においては、図６（Ａ）、（Ｂ）に示されるように、走行路１０２に沿って所定間隔Ａで以って配設された相隣るセンサＳＶｉ〜ＳＶｉ＋１間における車両の通過時間差Δｔを計測して、図１における制御演算装置２０の車速算出部２１に入力する。
該車速算出部２１においては、前記通過時間差Δｔと間隔Ａとにより、式
ｖ＝Ａ／Δｔ
によって通過車両１００の車速ｖを算出し、車両軸間距離算出部２２に入力する。
【００２５】
前記車軸検知用センサ２においては、図７（Ａ）、（Ｂ）に示されるように、車両１００の通過前から車軸間隔Ｌなる車軸が通過する毎に車軸位置の光電信号をＳＪ１、ＳＪ２、ＳＪ３の順に発信し（あるいは車軸検知用センサ２を１個設けて、１個の車軸検知用センサ２を車軸が通過する毎に光電信号を発信するようにしてもよい）、反射板１０５を介して受信し、図１における制御演算装置２０の車両軸間距離算出部２２に入力する。
該車両軸間距離算出部２２においては、前記車軸検知用センサ２の車軸位置の光電信号により通過車両１００の車軸位置と車軸数を検出し、車軸位置及び車軸数と前記車速算出部２１から入力された通過車両１００の車速ｖの算出値とによって、車両重量の算出対象となる通過車両１００の車両認識を行い、該車両認識信号を図１における車両軸重量算出部２４に入力する。
【００２６】
さらに複数の車両が走行中の場合は、各軸位置を次の考えで特定する。
複数位置に配置された軸検知センサの信号から、対象区間内に存在する車軸の個数を知ることができる。その個数がＳの場合、各軸の信号に符号をつけ、それをＳｓ（ｓ＝１、Ｓ）とする。
車軸位置検知センサの設置座標をＸｊ（ｊ＝１、ｎ）（ここにｎは、軸検知センサの個数）とする。
車軸Ｓｓは時刻とともに位置を変えていくので、その座標をＸｓ（ｔ）（ｓ＝１，Ｓ）と記号付け、かつ、次の時間に関する式で表現する。
Ｘｓ（ｔ）＝Ｃ１ｓ・ｔα＋Ｃ２ｓ・ｔβ＋・・・・・・
車軸Ｓｓが、軸位置検知センサの座標Ｘｊを通過した時刻をｔｓｊとすれば、それらのデータからＣ１ｓ、Ｃ２ｓ・・が求まるから、全ての車軸の座標を時間の関数で表現できる。
【００２７】
また、前記車両位置検知用距離センサ３においては、図８（Ａ）、（Ｂ）に示されるように、複数の走行車線１０２ａ、１０２ｂ、１０２ｃを通過する車両１００ごとに該センサ３（Ｓｋ）からレーザ信号、又はレーザ変位計からの信号を発信し、受信する図１における制御演算装置２０の走行車線検出部２３に入力する。
該走行車線検出部２３においては、前記車軸位置検知用距離センサ３からのレーザ信号、又はレーザ変位計からの信号から、該車軸位置検知用距離センサ３と車両１００との距離を算出し、当該通過車両１００の走行車線（１０２ａ、１０２ｂ、１０２ｃ）を判定して車両軸重量算出部２４に入力する。
【００２８】
車両軸重量算出部２４においては、次の方法によって車両重量（車軸重量）Ｗｉを算出する。
橋梁１０１を車両１００が通過する場合に、該橋梁に発生する歪εは以下のようにして求められる。
橋梁１０１の機械的データを下記とする。
支点間の長さ ；Ｌ１
ヤング率 ；Ｅ
断面係数 ；Ｚ
着目する径間の支点の一つを座標の原点にとり、道路軸方向に１次元座標をとる。
【００２９】
橋梁１０１に取付けた歪ゲージ４（ＳＨ１、ＳＨ２、ＳＨ３あるいはＳＨ１１、ＳＨ２１、ＳＨ３１、ＳＨ４１）の座標をａとする。
時刻ｔ１に橋梁１０１を通過する複数の車両１００の車軸に関して、下記のように設定する。
車軸の総計 ；Ｓ
各車軸荷重 ；Ｗｉ （ｉ＝１，Ｓ）
Ｗｉの座標 ；ｘｉ（ｔ１）
上記の車両走行状態に関して橋梁に発生する歪εは、２径間連続梁に発生する歪に近い。その場合、荷重軸位置ｘｉ（ｔ１）が、歪εに与える影響係数は下記であることが知られている。
【００３０】

Figure 2005030786
【００３１】
時刻（ｔ１）において着目している歪ε（ｔ１）は、次のように求められる。
【００３２】
ε（ｔ１）＝ΣＡｉ（ｘｉ（ｔ１））・Ｗｉ（ｉ＝１，Ｓ） （３１）
【００３３】
式（３１）の関係式を用いれば、各軸荷重Ｗｉは次のようにして求めることができる。
車両１００が走行していく過程で、時間ｔ＝ｔ１からｔ＝ｔｓまで、Ｓ回の歪測定を行い、同じ時刻における各車軸の座標の捕捉を行えば、次の関係式が得られる。
【００３４】
ε（ｔ１）＝ ΣＡｉ（ｘｉ（ｔ１））・Ｗｉ
ε（ｔ２）＝ ΣＡｉ（ｘｉ（ｔ２））・Ｗｉ
・・・・ （３４）
・・・・
ε（ｔｓ）＝ ΣＡｉ（ｘｉ（ｔｓ））・Ｗｉ
【００３５】
式（３４）は未知数Ｗｉに関する定数係数の多次元一次方程式であるので、逆行列などを使ってＷｉを求めることができる。
【００３６】
図９は、以上のような、車両重量（車軸重量）Ｗの算出手順のフローを示したものである。
ここで、車両重量などの算出には、前述の時刻ｔ１からｔｓの間の軸位置データ及び変形量測定データを用いるので、車両重量などの算出はリアルタイムで行うのではなく、蓄積データからｔ１からｔｓの間のデータを抽出して行う。
図９において、使用する最小限の計測データは、車両位置検知センサの出力と、車軸位置検知センサの出力と、橋梁１０１の歪測定値の計３種の時刻暦である（Ｓ１）。
それらの計測時刻の中に、車両重量算出の解析開始時刻ｔ０を設定し、その時刻以降のある時間経過する間の車軸位置検知センサの出力から、関与する車軸数を分析し、その数Ｓを求める（Ｓ２）。
次いで全車軸の座標計算式；Ｘｓ（ｔ）を設定する（Ｓ３）。
【００３７】
次いで、解析時間間隔ｄｔを決定してから（Ｓ４）、解析時刻ｔｎ＝ｔ０＋ｎｄｔを決定する（Ｓ５）。
次いで、前記歪履歴ε（ｔ）の検出値を用いて、各時刻の解析適用必要量を下記のように抽出し計算する（Ｓ６）。
歪；ε（ｔｎ）
各軸の座標；Ｘｐ（ｔｎ）
ｎ＝０，Ｓ−１ ｐ＝１，Ｓ
【００３８】
次いで、各軸の軸重Ｗｓを計算し（Ｓ７）、車両位置検知センサの出力と軸位置検知センサとの照合から、車両とそれに属する車軸を特定して、各車軸荷重の合計値としての車両重量を計算する（Ｓ８）。
【００３９】
かかる実施例によれば、設定された計測区間内に通過する複数の車両１００の一定速度での走行時、減速時、増速時、さらには停止時のあらゆる走行あるいは停車状態における重量を高精度で計測することが可能となる。また、軸荷重計測装置を走行路１０２中に埋設することなく、該走行路の側部に車両１００と非接触で以って車両１００の重量計測を行うことができる。
【００４０】
また、前記制御演算装置２０において、通過車両１００の走行速度の検出値ｖと車軸位置及び車軸数の検出値とにより該通過車両１００の車軸間距離Ｌを算出し，該車軸間距離Ｌの分布状態つまり該車軸間距離Ｌの計測長さと車種別の設定長さとを対比させて通過車両１００がどの車種であるかを認識する。これにより、
通過車両１００の車両認識を正確に行うことができて、この車両認識データと前記のような時系列的な歪計測データε（ｔ１）、ε（ｔ２）…ε（ｔｓ）とを照合させることにより、車両１００の重量計測精度をさらに向上できる。
尚、前記歪ゲージＳＨに代えて、圧電素子を橋梁１０１下部に取付ける手段、レーザ変位計を非接触で橋梁１０１に取付ける手段、加速度計、速度計、接触式変位計を用いることができる。
【００４１】
【発明の効果】
以上記載の如く本発明によれば、橋梁に設置された変形量計測手段により、設定された計測時間内に複数回、かつ車両認識された通過車両の車軸に対応する部位及びその近傍において橋梁の歪等の変形量を計測し、制御演算装置において前記車両認識データと変形量の計測データに基づき通過車両の重量を算出するので、設定された計測時間内に通過する車両による橋梁の変形量を該車両の通過時間中に複数点に亘って時系列的に検出し、かかる時系列的な変形量計測データと前記通過車両の車両認識データとによって前記通過車両の重量を時系列的に算出することができる。
これにより、車両の一定速度での走行時、減速時、増速時、さらには停止時のあらゆる走行あるいは停車状態における車両重量を高精度で計測することが可能となる。また、軸荷重計測装置を走行路中に埋設することなく走行路の側部に該車両と非接触で以って車両の重量計測を行うことができる。
【００４２】
また、通過車両の走行速度の検出値と車軸位置及び車軸数の検出値とにより該通過車両の車軸間距離を算出し該車軸間距離の分布状態によって車両認識を行い、該車軸間距離の計測長さと車種別の設定長さとを対比させることにより通過車両の車両認識を正確に行うことができるので、この車両認識データと前記時系列的な歪計測データとを照合させることにより、車両の重量計測精度をさらに向上できる。
【図面の簡単な説明】
【図１】本発明の実施例に係る橋梁通過車両の重量計測装置の制御ブロック図である。
【図２】前記実施例における橋梁走行路への計測器具の取付状態を示す要部側面図である。
【図３】図２のＡ矢視図である。
【図４】図３のＢ矢視図である。
【図５】車両位置検知用距離センサの他の例を示す正面図である。
【図６】速度検知用センサによる車両速度の検出方法の説明図である。
【図７】車軸検知用センサによる車軸位置検出方法の説明図である。
【図８】車両位置検知用距離センサによる複数車線での車両認識方法の説明図である。
【図９】前記実施例における橋梁通過車両の重量計測の制御フロー図である。
【符号の説明】
１ 速度検知用センサ
２ 車軸検知用センサ
３ 車両位置検知用距離センサ
４ 歪ゲージ
６ ビデオカメラ
２０ 制御演算装置
２１ 車速算出部
２２ 車両軸間距離算出部
２３ 走行車線検出部
２４ 車両軸重量算出部
１００ 車両
１０１ 橋梁
１０２ 走行路
１０５ 反射板[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an axle load and weight measurement method for a vehicle passing through a bridge and a device for measuring the weight of a vehicle passing through a bridge running path.
[0002]
[Prior art]
Techniques such as Patent Document 1 and Non-Patent Document 1 are provided as techniques for measuring the weight of a vehicle passing on a road on a highway or a bridge.
In the technique of Patent Document 1, the fluctuation axle weight value of the traveling vehicle is detected by a minute sampling time based on the detection signal from the axle weight detector embedded in the road surface of the traveling road and the vehicle detector that discriminates one vehicle at a time. Measured many times each time to obtain a variable axle weight value data string, calculate the frequency of the fluctuation component of the vehicle while traveling from the variable axle weight value data string, and use the frequency and the common phase to calculate the fluctuation component of the axle It is comprised so that an amplitude and a static shaft weight value may be calculated | required.
[0003]
On the other hand, in the technique of Non-Patent Document 1, a strain ε 0 (t) in a traveling path such as a bridge is measured by running a test vehicle with a clear axle load W 1 to W n and an inter-axis distance L. From the measured strain ε 0 (t), the axle load of the vehicle is calculated by the following method.
First, the strain influence line ε (t) is obtained by the following procedure.
[0004]
f (x) = a 0 + a 1 x + a 2 x 2 +... a n x m (a i is a coefficient) (1)
ε (t) = W 1 f (x + h 1 ) + W 2 f (x + h 2 ) +... W n f (x + h n ) (2)
x = vt (x is a reference position, v (vehicle speed) = constant speed) (3)
[0005]
Here, h i is the deviation amount above (1) for each axis from the reference position x ~ (3) equation thus assumes strain epsilon a (t), the epsilon (t) and the measured strain epsilon 0 (t) using a least squares method by comparing the preparative ε 0 (t) -ε (t ) determines the coefficients a 1 ~a n that minimizes, to determine f (x).
When a vehicle with an unknown axle load comes to the measurement travel path, the difference (ε 0 (t) −ε (t)) between the measured strain ε 0 (t) and ε (t) is reduced. The axial weights W 1 to W n are obtained.
[0006]
[Patent Document 1]
JP 11-101683 A [Non-patent Document 1]
Bridge and foundation April 1987 issue (pages 41-45) (weight measurement of traveling vehicles)
[0007]
[Problem to be Solved by the Invention]
In the technique of Patent Document 1, since the axle load detector and the vehicle detector are embedded in the road surface of the traveling road, the vehicle and the axle load detector and the vehicle detector come into contact with each other. It is necessary to regulate the traffic on the road during measurement, and the measuring instruments such as the axle load detector and the vehicle detector come into contact with the vehicle, and are easily damaged.
[0008]
Further, in the technique of Non-Patent Document 1, since the measurement instrument and the vehicle are not in contact with each other, the occurrence of the above-described problem can be avoided, but the shape of the distortion waveform when v (vehicle speed) is a constant speed. Since the distortion influence line ε (t) is calculated from the whole, when the vehicle speed v fluctuates or the vehicle stops, such as during acceleration or deceleration, the distortion waveform collapses and the axis It becomes difficult to measure the weight, and it becomes impossible to measure the vehicle weight.
And so on.
[0009]
In view of the problems of the prior art, the present invention makes it possible to measure the vehicle weight in a non-contact state between the vehicle and the measuring instrument in a plurality of vehicles and a bridge of a plurality of lanes. It is possible to avoid the occurrence of damage due to contact with the vehicle, and to measure the weight of the vehicle in any driving or stationary state, such as when the vehicle is traveling at a constant speed, decelerating, accelerating, or stopping. An object of the present invention is to provide an axle load and weight measuring method and apparatus for a vehicle passing through a bridge.
[0010]
[Means for solving problems]
In order to achieve the above object, the present invention provides a method for measuring the axle load and weight of a vehicle passing through a bridge that measures the axle load and weight of a vehicle passing over the road of a bridge, and a plurality of speed detection sensors along the road. Are installed at predetermined intervals, the traveling speed of the passing vehicle is detected by the speed detection sensor, and the axle detection sensor is installed on the travel path, and the axle position and the number of axles of the passing vehicle are determined by the axle detection sensor. And detecting the passing vehicle by the travel speed and the axle position, and installing a deformation amount measuring means such as a strain gauge on the bridge, and determining the deformation amount of the bridge by the passing vehicle by the deformation amount measuring means. Measurement is performed a plurality of times within a set measurement time, and at least corresponding to the axle of the passing vehicle recognized by the vehicle, and the deformation data corresponding to the vehicle recognition data and the axle is measured. And calculates the axle load and the weight of the passing vehicle based on the data.
[0011]
In addition, as an apparatus for carrying out the method invention, in a weight measuring device for a bridge passing vehicle configured to measure an axle load and a weight of a vehicle passing on a traveling road of a bridge, the weight measuring device of the passing vehicle at a predetermined interval along the traveling road is provided. A plurality of speed detection sensors for detecting the traveling speed of a passing vehicle, and an axle detection for detecting the axle position and the number of axles of the passing vehicle, one or a plurality along the traveling path. And one or more sensors for the bridge, and the amount of deformation of the bridge by the passing vehicle is measured a plurality of times within a set measurement time, and at least corresponding to the axle of the passing vehicle recognized by the vehicle. A vehicle that recognizes the passing vehicle based on the travel speed and the axle position, and calculates the weight of the passing vehicle based on the vehicle recognition data and the deformation measurement data corresponding to the axle. Characterized by comprising a that processing device.
[0012]
In this invention, the following configuration is preferable.
That is, the distance between the axles of the passing vehicle is calculated from the detected value of the traveling speed of the passing vehicle and the detected values of the axle position and the number of axles, and the vehicle is recognized based on the distribution state of the distance between the axles.
Then, as an apparatus for performing such a method, the control arithmetic device is based on the detected value of the traveling speed of the passing vehicle by the speed detecting sensor and the detected value of the axle position and the number of axles by the axle detecting sensor. An inter-axle distance calculating means for calculating a distance between axles of a passing vehicle, and a means for performing vehicle recognition according to a distribution state of the inter-axle distance calculated by the inter-axle distance calculating means. A weight measuring device is preferable.
As the deformation amount measuring means, there are means for attaching a strain gauge to the lower part of the bridge, means for attaching the piezoelectric element to the lower part of the bridge, means for attaching the laser displacement meter to the bridge in a non-contact manner, an accelerometer, a speedometer, a contact displacement meter, etc. Is preferred.
[0013]
According to this invention, the vehicle recognition of the passing vehicle is performed based on the traveling speed of the passing vehicle on the road on the bridge detected by the speed detection sensor and the axle position and the number of axles of the passing vehicle detected by the axle detection sensor. The deformation amount measuring means installed on the road is used several times within the set measurement time, and the deformation amount such as the distortion of the bridge in the vicinity of the portion corresponding to the axle of the passing vehicle recognized by the vehicle and the vicinity thereof. Since the axle load and the weight of the passing vehicle are calculated based on the vehicle recognition data and the deformation measurement data in the control arithmetic unit, the amount of deformation of the bridge by the vehicle passing within the set measurement time is measured. The passing vehicle is detected in a time series over a plurality of points during the passing time of the vehicle, and the passing vehicle is detected based on the time series deformation measurement data and the vehicle recognition data of the passing vehicle. It is possible to calculate the axle loads and weight in time series.
[0014]
As a result, the weight of the vehicle can be measured without contact with the vehicle on the side of the traveling road without embedding the axial load measuring device in the traveling road as in Patent Document 1. As in Patent Document 1, weight measurement at the time of increase, deceleration or stop of the vehicle is not possible, and when the vehicle is traveling at a constant speed on a bridge of multiple vehicles and multiple lanes, at the time of deceleration, at the time of acceleration In addition, it is possible to measure the weight in any running or stopped state at the time of stopping with high accuracy.
[0015]
Further, in the control arithmetic unit, the distance between the axles of the passing vehicle is calculated from the detected value of the traveling speed of the passing vehicle and the detected values of the axle position and the number of axles, and the vehicle is recognized by the distribution state of the distance between the axles. By comparing the measurement distance of the distance between the axles and the set length of the vehicle type, the vehicle recognition of the passing vehicle can be accurately performed, and the vehicle recognition data is compared with the time-series distortion measurement data. By doing so, the weight measurement accuracy of the vehicle can be further improved.
[0016]
In the present invention, preferably, a distance between a vehicle passing through each traveling lane and the sensor is measured by a vehicle position detection distance sensor installed on one side or both sides of the road, and the measured value of the distance is measured. Based on the above, the traveling lane of the passing vehicle is detected.
As a device for carrying out such a method, a vehicle position detection distance sensor is provided which measures the distance between a vehicle passing through each travel lane and the sensor disposed on one or both sides of the travel path. The control arithmetic device is preferably a weight measuring device for a vehicle passing through a bridge configured to have means for detecting a travel lane of the passing vehicle based on a measured value of the distance by the distance sensor for vehicle position detection.
[0017]
If comprised in this way, the distance of the passing vehicle and the vehicle position detection distance sensor in several driving | running | working lanes will be measured by vehicle position detection distance sensors, such as a photoelectric sensor installed in the one side or both sides of a road. As a result, even if the traveling lane is a plurality of bridges, it is possible to detect the axle load and the vehicle weight for each vehicle passing through the traveling lane.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are merely illustrative examples and not intended to limit the scope of the present invention unless otherwise specified. Absent.
[0019]
FIG. 1 is a control block diagram of a weight measuring device for a vehicle passing through a bridge according to an embodiment of the present invention. 2 is a side view of an essential part showing a mounting state of the measuring instrument on the bridge travel path in the above embodiment, FIG. 3 is a view as seen from an arrow A in FIG. 2, and FIG. 4 is a view as seen from an arrow B in FIG. FIG. 5 is a front view showing another example of a vehicle position detection distance sensor. 6 is an explanatory diagram of a vehicle speed detection method using a speed detection sensor, FIG. 7 is an explanatory diagram of an axle position detection method using an axle detection sensor, and FIG. 8 is a vehicle recognition method in a plurality of lanes using a vehicle position detection distance sensor. It is explanatory drawing of. FIG. 9 is a control flow chart for measuring the weight of the vehicle passing through the bridge in the embodiment.
[0020]
In FIG. 2 to FIG. 4 showing the attachment state of the measuring instrument of the weight measuring device in the vehicle passing through the bridge according to the embodiment of the present invention, reference numeral 100 denotes a vehicle for weight measurement and measurement with an inter-axle distance L, 101 denotes a bridge, and 102 denotes the bridge This is a travel path on the bridge 101.
Reference numeral 1 denotes a speed detection sensor composed of a photoelectric sensor (or another type of sensor). SV 1 and SV 2 are arranged on one side of the travel path 102 at a predetermined interval A along the travel path 102. , SV 3 , SV 4 , a plurality of vehicles 100 are arranged so as to detect the traveling speed of the vehicle 100 passing through the traveling path 102 as described later and to input to the control arithmetic unit 20 described later.
The installation interval A of the speed detection sensor 1 is set larger than the inter-axle distance L of the vehicle 100.
[0021]
2 is an axle detection sensor composed of a photoelectric sensor, one on one side of the traveling road 102, or SJ 1 , SJ 2 , SJ 3 at predetermined intervals along the traveling road 102 as shown in the figure. In this manner, a plurality of axle positions and the number of axles of the vehicle 100 passing through the travel path 102 are detected as described later, and input to the control arithmetic unit 20 described later.
Instead of the photoelectric sensor of the axle detection sensor 2, as shown in FIG. 5, a video camera 6 is installed on one side of the traveling road 102, and the position of the axle is detected from the video camera 6 image. You can also
[0022]
Reference numeral 3 denotes a vehicle position detection distance sensor composed of a laser displacement meter. The vehicle position detection distance sensor 3 is installed on one side of the travel path 102 like Sk and passes through a plurality of travel lanes and the vehicle position detection distance sensor 3. The distance is measured and input to the control arithmetic unit 20 described later.
With this configuration, the distance between the passing vehicle 100 and the vehicle position detection distance sensor 3 in a plurality of travel lanes is measured by the vehicle position detection distance sensor 3 installed on one side or both sides of the road 102. By doing so, even if the travel lane is a plurality of bridges 101, it is possible to detect the vehicle weight for each vehicle 100 passing through the travel lane.
Reference numeral 105 denotes a reflector for reflecting the photoelectric signals from the sensors 1, 2, 3 and transmitting them to the receiving unit of the control arithmetic unit 20.
[0023]
Reference numeral 4 denotes a strain gauge, one of the bridges 101 in the bridge 101 on the back side of the traveling road 102 when the vehicle passes through the strain, or SH 1 along the traveling direction of the traveling road 100 as shown in FIG. , SH 2 , SH 3 , and a plurality of SH 11 , SH 21 , SH 31 , SH 41 in the width direction of the travel path 100 as shown in FIG. The distortion of the bridge 101 is measured at a portion corresponding to the axle of the passing vehicle 100 and in the vicinity thereof, measured in time series within the set measurement time, and input to the control arithmetic unit 20 described later. .
[0024]
Next, based on FIG.1 and FIG.6 thru | or FIG. 9, operation | movement of the weight measuring apparatus of this bridge passing vehicle is demonstrated.
In the speed detection sensor 1, as shown in FIGS. 6A and 6B, adjacent sensors SV i to SV i + 1 arranged at a predetermined interval A along the traveling path 102. The vehicle passing time difference Δt is measured and input to the vehicle speed calculation unit 21 of the control arithmetic device 20 in FIG.
In the vehicle speed calculation unit 21, the equation v = A / Δt is calculated based on the passage time difference Δt and the interval A.
Is used to calculate the vehicle speed v of the passing vehicle 100 and input it to the inter-vehicle distance calculator 22.
[0025]
In the axle detection sensor 2, as shown in FIGS. 7A and 7B, every time an axle having an axle interval L passes from before the vehicle 100 passes, the photoelectric signal at the axle position is sent to SJ 1 , SJ. 2 and SJ 3 in order (or one axle detection sensor 2 may be provided, and a photoelectric signal may be transmitted every time the axle passes through one axle detection sensor 2). 105 and input to the inter-vehicle distance calculation unit 22 of the control arithmetic unit 20 in FIG.
The inter-axle distance calculation unit 22 detects the axle position and the number of axles of the passing vehicle 100 from the photoelectric signal of the axle position of the axle detection sensor 2, and inputs the axle position, the number of axles, and the vehicle speed calculation unit 21. Based on the calculated value of the vehicle speed v of the passing vehicle 100, the vehicle recognition of the passing vehicle 100 that is the object of vehicle weight calculation is performed, and the vehicle recognition signal is input to the vehicle axle weight calculation unit 24 in FIG.
[0026]
Further, when a plurality of vehicles are traveling, the position of each axis is specified based on the following idea.
The number of axles existing in the target section can be known from the signals of the axis detection sensors arranged at a plurality of positions. When the number is S, a sign is assigned to the signal of each axis, which is Ss (s = 1, S).
The installation coordinates of the axle position detection sensor are Xj (j = 1, n) (where n is the number of axis detection sensors).
Since the position of the axle Ss changes with time, its coordinates are labeled as Xs (t) (s = 1, S), and are expressed by an expression relating to the next time.
Xs (t) = C1s · t α + C2s · t β +
If the time when the axle Ss passes the coordinate Xj of the axis position detection sensor is tsj, C1s, C2s,... Can be obtained from those data, so that the coordinates of all axles can be expressed as a function of time.
[0027]
In the vehicle position detection distance sensor 3, as shown in FIGS. 8A and 8B, the sensor 3 (Sk) is provided for each vehicle 100 passing through the plurality of travel lanes 102a, 102b, 102c. A laser signal or a signal from a laser displacement meter is transmitted and received and input to the traveling lane detector 23 of the control arithmetic device 20 in FIG.
The travel lane detector 23 calculates the distance between the axle position detection distance sensor 3 and the vehicle 100 from the laser signal from the axle position detection distance sensor 3 or the signal from the laser displacement meter, and The travel lane (102a, 102b, 102c) of the passing vehicle 100 is determined and input to the vehicle shaft weight calculation unit 24.
[0028]
In the vehicle axis by weight calculating unit 24 calculates the vehicle weight (axle weight) W i by the following methods.
When the vehicle 100 passes through the bridge 101, the strain ε generated in the bridge is obtained as follows.
The mechanical data of the bridge 101 is as follows.
Length between fulcrums; L 1
Young's modulus E
Section modulus; Z
One fulcrum between the spans of interest is taken as the origin of coordinates, and one-dimensional coordinates are taken in the road axis direction.
[0029]
The coordinate of the strain gauge 4 (SH 1 , SH 2 , SH 3 or SH 11 , SH 21 , SH 31 , SH 41 ) attached to the bridge 101 is a.
At time t 1 with respect to the axle of the plurality of vehicles 100 that passes through the bridges 101 are set as follows.
Total number of axles; S
Each axle load; Wi (i = 1, S)
W i coordinates; x i (t 1 )
The strain ε generated in the bridge in the above vehicle running state is close to the strain generated in the two-span continuous beam. In this case, it is known that the influence coefficient of the load axis position x i (t 1 ) on the strain ε is as follows.
[0030]
Figure 2005030786
[0031]
The strain ε (t 1 ) focused on at time (t 1 ) is obtained as follows.
[0032]
ε (t 1 ) = ΣA i (x i (t 1 )) · W i (i = 1, S) (31)
[0033]
Using the relation of equation (31), each shaft load W i may be determined as follows.
In the course of the vehicle 100 is gradually running from the time t = t 1 to t = t s, performs distortion measurements S times, by performing the acquisition of the coordinates of each axle at the same time, the following relationship is obtained .
[0034]
ε (t 1 ) = ΣA i (x i (t 1 )) · W i
ε (t 2 ) = ΣA i (x i (t 2 )) · W i
(34)
...
ε (t s) = ΣA i (x i (t s)) · W i
[0035]
Since Equation (34) is a multidimensional linear equation of constant coefficients related to the unknown number W i , W i can be obtained using an inverse matrix or the like.
[0036]
FIG. 9 shows the flow of the procedure for calculating the vehicle weight (axle weight) W as described above.
Here, the calculation of such vehicle weight, because use of the axial position data and the deformation amount measurement data between time t 1 of the aforementioned t s, is calculated such as vehicle weight, instead of doing real time, from the accumulated data carried out by extracting the data between t s from t 1.
In FIG. 9, the minimum measurement data to be used are three kinds of time calendars, that is, the output of the vehicle position detection sensor, the output of the axle position detection sensor, and the strain measurement value of the bridge 101 (S1).
The vehicle weight calculation analysis start time t 0 is set in these measurement times, and the number of involved axles is analyzed from the output of the axle position detection sensor during a certain period of time after that time. Is obtained (S2).
Next, a coordinate calculation formula for all axles; X s (t) is set (S3).
[0037]
Next, after the analysis time interval dt is determined (S4), the analysis time t n = t 0 + ndt is determined (S5).
Next, using the detected value of the strain history ε (t), the analysis application required amount at each time is extracted and calculated as follows (S6).
Strain; ε (t n )
Coordinate of each axis; X p (t n )
n = 0, S-1 p = 1, S
[0038]
Next, the axle load Ws of each axis is calculated (S7), the vehicle and the axle belonging to it are identified from the collation between the output of the vehicle position detection sensor and the axis position detection sensor, and the vehicle as the total value of each axle load. The weight is calculated (S8).
[0039]
According to such an embodiment, the plurality of vehicles 100 that pass within the set measurement section travel at a constant speed, decelerate, increase in speed, and at any stop or stop weights with high accuracy. It becomes possible to measure with. Further, the weight measurement of the vehicle 100 can be performed without burying the axial load measuring device in the traveling road 102 without contacting the vehicle 100 on the side of the traveling road.
[0040]
Further, the control arithmetic unit 20 calculates the inter-axle distance L of the passing vehicle 100 from the detected value v of the traveling speed of the passing vehicle 100 and the detected values of the axle position and the number of axles, and the distribution of the inter-axle distance L. The state, that is, the measured length of the inter-axle distance L is compared with the set length of the vehicle type to recognize which vehicle type the passing vehicle 100 is. This
The vehicle recognition of the passing vehicle 100 can be performed accurately, and the vehicle recognition data and the time-series distortion measurement data ε (t 1 ), ε (t 2 )... Ε (t s ) as described above. By checking, the weight measurement accuracy of the vehicle 100 can be further improved.
Instead of the strain gauge SH, means for attaching the piezoelectric element to the lower portion of the bridge 101, means for attaching the laser displacement meter to the bridge 101 in a non-contact manner, an accelerometer, a speedometer, and a contact displacement meter can be used.
[0041]
【The invention's effect】
As described above, according to the present invention, the deformation amount measuring means installed on the bridge is used a plurality of times within the set measurement time, and at the site corresponding to the axle of the passing vehicle recognized by the vehicle and in the vicinity thereof. Since the amount of deformation such as strain is measured and the weight of the passing vehicle is calculated based on the vehicle recognition data and the deformation amount measurement data in the control arithmetic unit, the deformation amount of the bridge due to the vehicle passing within the set measurement time is calculated. Detected in a time series over a plurality of points during the passing time of the vehicle, and calculates the weight of the passing vehicle in a time series based on the time series deformation measurement data and the vehicle recognition data of the passing vehicle. be able to.
As a result, the vehicle weight can be measured with high accuracy when the vehicle is traveling at a constant speed, when it is decelerated, when it is accelerated, and when it is stopped or when it is stopped. In addition, the weight of the vehicle can be measured without contacting the vehicle on the side of the traveling road without burying the axial load measuring device in the traveling road.
[0042]
Further, the distance between the axles of the passing vehicle is calculated from the detected value of the traveling speed of the passing vehicle and the detected values of the axle position and the number of axles, the vehicle is recognized by the distribution state of the distance between the axles, and the distance between the axles is measured. By comparing the length and the set length of the vehicle type, vehicle recognition of the passing vehicle can be performed accurately. Therefore, by comparing the vehicle recognition data with the time-series distortion measurement data, the vehicle weight Measurement accuracy can be further improved.
[Brief description of the drawings]
FIG. 1 is a control block diagram of a weight measuring device for a vehicle passing through a bridge according to an embodiment of the present invention.
FIG. 2 is a side view of an essential part showing a mounting state of a measuring instrument on a bridge traveling path in the embodiment.
FIG. 3 is a view on arrow A in FIG. 2;
4 is a view taken in the direction of arrow B in FIG. 3;
FIG. 5 is a front view showing another example of a vehicle position detection distance sensor.
FIG. 6 is an explanatory diagram of a vehicle speed detection method by a speed detection sensor.
FIG. 7 is an explanatory diagram of an axle position detection method using an axle detection sensor.
FIG. 8 is an explanatory diagram of a vehicle recognition method in a plurality of lanes by a vehicle position detection distance sensor.
FIG. 9 is a control flow diagram of weight measurement of a vehicle passing through a bridge in the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Speed detection sensor 2 Axle detection sensor 3 Vehicle position detection distance sensor 4 Strain gauge 6 Video camera 20 Control arithmetic unit 21 Vehicle speed calculation part 22 Inter-axle distance calculation part 23 Travel lane detection part 24 Vehicle axle weight calculation part 100 Vehicle 101 Bridge 102 Traveling path 105 Reflector

Claims (6)

橋梁の走行路上を通過する複数の車両の車軸荷重及び重量を計測する橋梁通過車両の車軸荷重及び重量計測方法において、前記走行路に沿って複数の速度検知用センサを所定間隔で設置して該速度検知用センサにより通過車両の走行速度を検出するとともに、前記走行路に車軸検知用センサを設置して車軸検知用センサにより前記通過車両の車軸位置を検出して、前記走行速度と車軸位置により前記通過車両の車両認識を行い、さらに前記橋梁に歪ゲージ等の変形量計測手段を設置して該変形量計測手段により通過車両による橋梁の変形量を測定し、その記録から設定された計測時間内に複数回、かつ少なくとも前記車両認識された通過車両の車軸数に対応して変形量を抽出し、前記車両認識データと車軸数に対応した変形量の計測データに基づき前記通過車両の車軸荷重及び重量を算出することを特徴とする橋梁通過車両の車軸荷重及び重量計測方法。In the axle load and weight measurement method for a vehicle passing through a bridge for measuring the axle load and weight of a plurality of vehicles passing on the road of the bridge, a plurality of speed detection sensors are installed at predetermined intervals along the road. The traveling speed of the passing vehicle is detected by the speed detection sensor, the axle detection sensor is installed on the traveling path, the axle position of the passing vehicle is detected by the axle detection sensor, and the traveling speed and the axle position are detected. The vehicle time of the passing vehicle is recognized, a deformation amount measuring means such as a strain gauge is installed on the bridge, and the deformation amount of the bridge by the passing vehicle is measured by the deformation amount measuring means, and the measurement time set from the record The amount of deformation is extracted a plurality of times and at least corresponding to the number of axles of the passing vehicle recognized by the vehicle, and the vehicle recognition data and the deformation amount measurement data corresponding to the number of axles are extracted. Axle load and weight measurement method of the bridge passing vehicle and calculates the axle load and the weight of the passing vehicle Hazuki. 前記通過車両の走行速度の検出値と車軸位置及び車軸数の検出値とにより該通過車両の車軸間距離を算出し、該車軸間距離の分布状態によって車両認識を行うことを特徴とする請求項１記載の橋梁通過車両の車軸荷重及び重量計測方法。The distance between the axles of the passing vehicle is calculated from the detected value of the traveling speed of the passing vehicle and the detected values of the axle position and the number of axles, and vehicle recognition is performed based on a distribution state of the distance between the axles. 2. Axle load and weight measurement method for vehicles passing through a bridge according to 1. 前記走行路の一側、又は両側に設置した車両位置検知用距離センサにより各走行車線を通過する車両と該センサとの間の距離を計測し、該距離の計測値に基づき前記通過車両の走行車線を検知することを特徴とする請求項１記載の橋梁通過車両の車軸荷重及び重量計測方法。A distance between a vehicle passing through each travel lane is measured by a vehicle position detection distance sensor installed on one or both sides of the travel path, and the travel of the passing vehicle is based on the measured value of the distance. 2. A method for measuring axle load and weight of a vehicle passing through a bridge according to claim 1, wherein a lane is detected. 橋梁の走行路上を通過する車両の重量を計測するように構成された橋梁通過車両の重量計測装置において、前記走行路に沿って所定間隔で複数個配設され通過車両の走行速度を検出する速度検知用センサと、前記走行路に１個または該走行路に沿って複数個配設され通過車両の車軸位置を検出する車軸検知用センサと、前記橋梁に１個または複数個配設され前記通過車両による橋梁の変形量を設定された計測時間内計測する変形量計測手段と、前記走行速度と車軸位置により前記通過車両の車両認識を行い該車両認識データと車軸数に対応した変形量の計測データに基づき前記通過車両の車軸荷重及び重量を算出する制御演算装置とを備えてなることを特徴とする橋梁通過車両の重量計測装置。In a weight measuring device for a vehicle passing through a bridge configured to measure the weight of a vehicle passing on a road running on a bridge, a speed at which a plurality of vehicles are arranged at predetermined intervals along the road to detect a running speed of the passing vehicle. A sensor for detection, one or a plurality of axle detection sensors arranged on the road and detecting the axle position of a passing vehicle, and one or more on the bridge. Deformation amount measuring means for measuring the amount of deformation of the bridge by the vehicle within a set measurement time, vehicle recognition of the passing vehicle is performed based on the travel speed and axle position, and the deformation amount corresponding to the vehicle recognition data and the number of axles is measured. A weighting device for a vehicle passing through a bridge, comprising: a control arithmetic device that calculates an axle load and a weight of the passing vehicle based on data. 前記制御演算装置は、前記速度検知用センサによる前記通過車両の走行速度の検出値と前記車軸検知用センサによる車軸位置及び車軸数の検出値とにより該通過車両の車軸間距離を算出する車軸間距離算出手段と、該車軸間距離算出手段で算出された前記車軸間距離の分布状態によって車両認識を行う手段とを有してなることを特徴とする請求項４記載の橋梁通過車両の重量計測装置。The control arithmetic unit calculates an inter-axle distance of the passing vehicle based on a detected value of the traveling speed of the passing vehicle by the speed detecting sensor and an detected value of the axle position and the number of axles by the axle detecting sensor. 5. The weight measurement of a vehicle passing through a bridge according to claim 4, further comprising: a distance calculation unit; and a unit that recognizes a vehicle according to a distribution state of the inter-axle distance calculated by the inter-axle distance calculation unit. apparatus. 前記走行路の一側、又は両側に配設され各走行車線を通過する車両との間の距離を計測する車両位置検知用距離センサを備え、前記制御演算装置は前記車両位置検知用距離センサによる前記距離の計測値に基づき前記通過車両の走行車線を検知する手段を有してなることを特徴とする請求項４記載の橋梁通過車両の重量計測装置。A vehicle position detection distance sensor that measures a distance between the vehicle that is disposed on one side or both sides of the travel path and that passes through each travel lane; 5. The weight measuring device for a vehicle passing through a bridge according to claim 4, further comprising means for detecting a travel lane of the passing vehicle based on the measured value of the distance.
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