JP2011158372A - Method for measurement of curvature and curve radius in railroad track - Google Patents
Method for measurement of curvature and curve radius in railroad track Download PDFInfo
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Description
本発明は、鉄道軌道管理のための平面線形・縦断線形（それぞれの、ある地点での曲率・曲線半径）の測定方法に関するものである。 The present invention relates to a method for measuring plane alignment and longitudinal alignment (curvature and curve radius at each point) for railway track management.
従来、車体傾斜制御用データの取得を目的として、台車枠に取り付けたジャイロ信号を元に、鉄道軌道の曲率・曲線半径を実測する技術は既に存在している（下記特許文献１参照）。
図８はかかる従来の鉄道軌道の曲線形状データ取得装置の模式図である。
この図において、１０１は鉄道軌道、１０２は車体、１０３はセンサ部、１０４は傾斜はり、１０５は台車枠、１０６は車輪軸、１０７は車体方位角速度センサ、１０８は速度センサ、１０９は傾斜角センサ、１１０は車体左右振動加速度センサ、１１１は演算・記憶部、１１２は曲率演算部、１１３はカント演算部、１１４は記憶部である。
Conventionally, there has already been a technique for actually measuring the curvature / curve radius of a railroad track based on a gyro signal attached to a bogie frame for the purpose of obtaining vehicle body tilt control data (see
FIG. 8 is a schematic diagram of such a conventional railway track curve shape data acquisition apparatus.
In this figure, 101 is a railway track, 102 is a vehicle body, 103 is a sensor unit, 104 is a tilting beam, 105 is a carriage frame, 106 is a wheel shaft, 107 is a vehicle body azimuth angular velocity sensor, 108 is a speed sensor, 109 is a tilt angle sensor. , 110 is a vehicle body vibration acceleration sensor, 111 is a calculation / storage unit, 112 is a curvature calculation unit, 113 is a cant calculation unit, and 114 is a storage unit.
ここでは、台車枠１０５に取り付けた傾斜角センサ（ジャイロセンサ）１０９からの信号に基づいて車体傾斜制御用データの取得を行うようにしている。
また、本願発明者らは、検出器ユニットを車両の台車枠に取付けることで、加速度計の傾きの影響を回避し、加速度計、変位計ともに個数を減らし、取付車両を選ばず、軸箱に部品を取り付ける必要のない慣性正矢法軌道狂い検測装置を提案している（下記特許文献２参照）。
Here, the vehicle body tilt control data is acquired based on a signal from a tilt angle sensor (gyro sensor) 109 attached to the
In addition, the inventors of the present application can avoid the influence of the inclination of the accelerometer by attaching the detector unit to the bogie frame of the vehicle, reduce the number of both the accelerometer and the displacement meter, and select the mounting vehicle. An inertial Masaya method orbit misalignment detector that does not require any parts is proposed (see
しかしながら、上記した従来の測定方法は、車体傾斜制御用データの取得を目的としており、台車枠１０５に取り付けた傾斜角センサによって、営業列車の速度で走行させて測定することを前提としている。このため、この方法の場合、曲率（平面曲線）の算出は、
曲率（１／ｍ）＝台車枠の方位角速度（ｒａｄ／ｓ）／走行速度（ｍ／ｓ）
で計算するようにしている。
However, the above-described conventional measurement method is intended to acquire data for vehicle body tilt control, and is based on the assumption that the vehicle is driven and measured at the speed of a commercial train by an inclination angle sensor attached to the
Curvature (1 / m) = Bogie frame azimuth velocity (rad / s) / traveling speed (m / s)
I am trying to calculate with.
しかし、この方法では、低速時には方位角速度、走行速度とも出力値が小さくなる。ここで計測器の分解能は無限に小さくできるわけではないから、結果として計算誤差が大きくなり、この方法を適用可能な速度には下限が生じる。ゆえに、この方法は、例えば、歩行速度で用いる計測器への適用は困難である。
本発明は、上記状況に鑑みて、測定範囲を低速域にまで広げることができる鉄道軌道の曲率・曲線半径測定方法を提供することを目的とする。
However, with this method, the output value is small for both the azimuth speed and the traveling speed at low speeds. Here, since the resolution of the measuring instrument cannot be made infinitely small, as a result, the calculation error becomes large, and a lower limit occurs in the speed at which this method can be applied. Therefore, this method is difficult to apply to a measuring instrument used at walking speed, for example.
In view of the above situation, an object of the present invention is to provide a method for measuring the curvature / curve radius of a railway track that can extend the measurement range to a low speed range.
本発明は、上記目的を達成するために、
〔１〕鉄道軌道の曲率・曲線半径測定方法において、軌道検測車に角度計をセットし、この角度計により計測した情報に基づいて鉄道軌道の２点の接線の相対角度を求め、一方、前記軌道検測車に車輪回転計をセットし、この車輪回転計により計測した情報に基づいて前記鉄道軌道の２点間の距離を求め、前記鉄道軌道の２点間の相対角度及び前記鉄道軌道の２点間の距離を所与の計算式に代入して計算結果を求め、この計算結果にローパスフィルタ処理を施すことを特徴とする。
In order to achieve the above object, the present invention provides
[1] In the method for measuring the curvature / curve radius of a railway track, an angle meter is set on the track inspection vehicle, and the relative angle of two tangents of the railway track is obtained based on the information measured by this angle meter, A wheel tachometer is set in the track inspection vehicle, a distance between the two points on the railroad track is obtained based on information measured by the wheel tachometer, a relative angle between the two points on the railroad track, and the railroad track The calculation result is obtained by substituting the distance between the two points into a given calculation formula, and the calculation result is subjected to low-pass filter processing.
〔２〕上記〔１〕記載の鉄道軌道の曲率・曲線半径測定方法において、前記角度計からの情報が方位角であり、前記計算式が前記鉄道軌道の２点間の相対角度／前記鉄道軌道の２点間の距離であり、それによって平面線形の曲率を求めることを特徴とする。
〔３〕上記〔１〕記載の鉄道軌道の曲率・曲線半径測定方法において、前記角度計からの情報が方位角であり、前記計算式が前記鉄道軌道の２点間の距離／前記鉄道軌道の２点間の相対角度であり、それによって前記鉄道軌道の平面線形の曲線半径を求めることを特徴とする。
[2] In the method of measuring a curvature / curve radius of a railway track according to [1] above, the information from the angle meter is an azimuth, and the calculation formula is a relative angle between two points of the railway track / the railway track. The distance between the two points is obtained, and thereby the planar linear curvature is obtained.
[3] In the method for measuring the curvature / curve radius of the railway track described in [1] above, the information from the angle meter is an azimuth, and the calculation formula is a distance between two points on the railway track / the railway track. It is a relative angle between two points, whereby a plane linear curve radius of the railway track is obtained.
〔４〕上記〔１〕記載の鉄道軌道の曲率・曲線半径測定方法において、前記角度計からの情報が傾斜角であり、前記計算式が前記鉄道軌道の２点間の相対角度／前記鉄道軌道の２点間の距離であり、それによって前記鉄道軌道の縦断線形の曲率を求めることを特徴とする。
〔５〕上記〔１〕記載の鉄道軌道の曲率・曲線半径測定方法において、前記角度計からの情報が傾斜角であり、前記計算式が前記鉄道軌道の２点間の距離／前記鉄道軌道の２点間の相対角度であり、それによって前記鉄道軌道の縦断線形の曲線半径を求めることを特徴とする。
[4] In the method for measuring the curvature / curve radius of the railway track described in [1] above, the information from the angle meter is an inclination angle, and the calculation formula is a relative angle between two points of the railway track / the railway track. The distance between the two points is obtained, whereby the longitudinal linear curvature of the railway track is obtained.
[5] In the method of measuring the curvature / curve radius of the railway track described in [1] above, the information from the angle meter is an inclination angle, and the calculation formula is a distance between two points on the railway track / the railway track. It is a relative angle between two points, thereby obtaining a longitudinal linear curve radius of the railway track.
〔６〕上記〔１〕記載の鉄道軌道の曲率・曲線半径測定方法において、前記角度計が測定途中で停止した場合には、前記２点間の相対角の計算の段階で、途中停止直後の数データとして停止直前値を用い、誤差軽減処理を行うことを特徴とする。 [6] In the railway track curvature / curve radius measurement method described in [1] above, when the angle meter stops in the middle of the measurement, immediately after the middle stop in the stage of calculation of the relative angle between the two points. The value immediately before stopping is used as numerical data, and error reduction processing is performed.
本発明の鉄道軌道の曲率・曲線半径測定方法によれば、ごく低速、例えば歩行速度で、また、途中で停止しながらの測定も可能である。また、低速測定であれば、ジャイロセンサなどの高価なセンサを搭載しなくとも、安価な地磁気による方位センサや傾斜計で実現することも可能である。 According to the method for measuring the curvature / curve radius of a railway track according to the present invention, it is possible to perform measurement at a very low speed, for example, at walking speed or while stopping on the way. In addition, for low-speed measurement, it is possible to implement it with an inexpensive azimuth sensor or inclinometer without mounting an expensive sensor such as a gyro sensor.
本発明の鉄道軌道の曲率・曲線半径測定方法は、軌道検測車に角度計をセットし、この角度計により計測した情報に基づいて鉄道軌道の２点の接線の相対角度を求め、一方、前記軌道検測車に車輪回転計をセットし、この車輪回転計により計測した情報に基づいて前記鉄道軌道の２点間の距離を求め、前記鉄道軌道の２点間の相対角度及び前記鉄道軌道の２点間の距離を所与の計算式に代入して計算結果を求め、この計算結果にローパスフィルタ処理を施す。 The method of measuring the curvature / curve radius of a railway track according to the present invention sets an angle meter in the track inspection vehicle, and obtains the relative angle of two tangents of the railway track based on information measured by the angle meter, A wheel tachometer is set in the track inspection vehicle, a distance between the two points on the railroad track is obtained based on information measured by the wheel tachometer, a relative angle between the two points on the railroad track, and the railroad track The distance between the two points is substituted into a given calculation formula to obtain a calculation result, and the calculation result is subjected to low-pass filter processing.
以下、本発明の実施の形態について詳細に説明する。
低速時の測定を安定的に精度良く行うには、速度の項を排した演算式を用い、それに応じた項目を測ればよい。具体的には、平面線形を見る平面曲線なら方位角（ヨー角）、縦断線形を見る縦曲線なら線路長手方向の傾斜角（ピッチ角）を測定することになる。
ここで、平面線形とは平面路線の形状を言う。また、縦断線形とは線路のこう配や縦曲線など、線路長手方向の高低変化の形状を言う。
Hereinafter, embodiments of the present invention will be described in detail.
In order to stably perform the measurement at low speed with high accuracy, it is only necessary to use an arithmetic expression that excludes the speed term and measure the corresponding item. Specifically, the azimuth angle (yaw angle) is measured for a plane curve looking at the plane alignment, and the inclination angle (pitch angle) in the longitudinal direction of the line is measured for the vertical curve looking at the vertical alignment.
Here, the plane alignment refers to the shape of a plane route. In addition, the vertical alignment means a shape of change in height in the longitudinal direction of the line such as a gradient of the line or a vertical curve.
図１は本発明の実施例を示す低速で測定可能な鉄道軌道の平面線形の曲率・曲線半径を求める方法の模式図、図２は本発明の実施例を示す低速で測定可能な鉄道軌道（平面線形）の曲率の測定フローチャート、図３は本発明の実施例を示す低速で測定可能な鉄道軌道（平面線形）の曲線半径の測定フローチャートである。
〔Ａ〕鉄道軌道の平面線形の曲率を求める場合（図２参照）
（１）まず、角度計（ジャイロセンサ、傾斜計、方位センサなど）を用いて、方位角を検出する（ステップＳ１）。
FIG. 1 is a schematic diagram of a method of obtaining a plane linear curvature / curve radius of a railway track that can be measured at a low speed according to an embodiment of the present invention, and FIG. FIG. 3 is a measurement flowchart of the curve radius of a railway track (plane alignment) that can be measured at a low speed according to an embodiment of the present invention.
[A] When calculating the plane linear curvature of a railway track (see Fig. 2)
(1) First, an azimuth angle is detected using an angle meter (gyro sensor, inclinometer, azimuth sensor, etc.) (step S1).
（２）次に、方位角に基づいて、鉄道軌道１の２点Ａ，Ｂのそれぞれの接線Ｃ，Ｄの相対角度γを計算する（ステップＳ２）。
（３）一方、車輪回転計（ロータリーエンコーダなど）を用いて、距離信号（車輪回転パルスなど）を検出する（ステップＳ３）。
（４）次に、距離信号に基づいて、鉄道軌道１の２点Ａ，Ｂ間の距離ｄ（サンプリング間隔）を計算する（ステップＳ４）。
(2) Next, based on the azimuth, the relative angle γ of the tangents C and D of the two points A and B of the
(3) On the other hand, a distance signal (wheel rotation pulse or the like) is detected using a wheel tachometer (rotary encoder or the like) (step S3).
(4) Next, based on the distance signal, the distance d (sampling interval) between the two points A and B of the
（５）次に、鉄道軌道１の２点Ａ，Ｂのそれぞれの接線Ｃ，Ｄの相対角度γ／鉄道軌道１の２点Ａ，Ｂ間の距離ｄを計算し、曲率を求める（ステップＳ５）。ここで、実際には、曲率（１／ｍ）＝鉄道軌道１の２点Ａ，Ｂ間の相対方位角γ（ｒａｄ）／鉄道軌道１の２点Ａ，Ｂの距離ｄ（ｍ）を求める。
（６）上記ステップＳ５で得られているデータは角度計の分解能に依存した階段状波形なので、ローパスフィルタ処理を施す（ステップＳ６）。それにより、鉄道軌道１の管理に必要十分な精度の滑らかな曲率が得られる。
(5) Next, the relative angle γ of the tangents C and D of the two points A and B of the
(6) Since the data obtained in step S5 is a stepped waveform depending on the resolution of the goniometer, low-pass filter processing is performed (step S6). As a result, a smooth curvature with sufficient accuracy necessary for the management of the
このようにして、鉄道軌道の平面曲線の曲率を測定することができる。
〔Ｂ〕鉄道軌道の平面線形の曲線半径を求める場合（図３参照）
（１）ステップＳ１１〜Ｓ１４は、上記した図１のステップＳ１〜Ｓ４と同様である。
（２）次に、鉄道軌道１の２点Ａ，Ｂ間の距離ｄ／鉄道軌道１の２点Ａ，Ｂのそれぞれの接線Ｃ，Ｄの相対角度γを計算して、曲線半径Ｒを求める（ステップＳ１５）。
In this way, the curvature of the railroad track's plane curve can be measured.
[B] When finding the radius of a planar linear curve of a railway track (see Fig. 3)
(1) Steps S11 to S14 are the same as steps S1 to S4 in FIG.
(2) Next, the distance d between the two points A and B of the
なお、Ｒ≫ｄのとき、Ｒ≒（１／２）ｄ／ｓｉｎ〔（１／２）γ〕≒ｄ／γ
である。ここで、鉄道軌道１の２点Ａ，Ｂ間の距離ｄは、軌道検測車が低速なほど小さくなる。
（３）次いで、ローパスフィルタ処理を施す（ステップＳ３６）。それにより、鉄道軌道１の管理に必要十分な精度の滑らかな曲線半径が得られる。
When R >> d, R≈ (1/2) d / sin [(1/2) γ] ≈d / γ
It is. Here, the distance d between the two points A and B on the
(3) Next, low-pass filter processing is performed (step S36). Thereby, a smooth curve radius with sufficient accuracy necessary for the management of the
このようにして、鉄道軌道の平面線形の曲線半径を測定することができる。
図４は本発明の実施例を示す低速で測定可能な鉄道軌道の縦断線形の曲率・曲線半径を求める方法の模式図、図５は本発明の実施例を示す低速で測定可能な鉄道軌道（縦断線形）の曲率の測定フローチャート、図６は本発明の実施例を示す低速で測定可能な鉄道軌道（縦断線形）の曲線半径の測定フローチャートである。
In this way, the planar linear curve radius of the railway track can be measured.
FIG. 4 is a schematic diagram of a method for obtaining a longitudinal curvature / curve radius of a railway track that can be measured at low speed according to an embodiment of the present invention, and FIG. 5 is a railway track that can be measured at low speed according to an embodiment of the present invention. FIG. 6 is a measurement flowchart of the curve radius of a railway track (vertical alignment) that can be measured at a low speed according to an embodiment of the present invention.
〔Ｃ〕鉄道軌道の縦断線形の曲率を求める場合（図５参照）
（１）まず、角度計（ジャイロセンサ、傾斜計、方位センサなど）を用いて、傾斜角を検出する（ステップＳ２１）。
（２）次に、傾斜角に基づいて、鉄道軌道１１の２点Ａ′，Ｂ′のそれぞれの接線Ｃ′，Ｄ′の相対角度γ′を計算する（ステップＳ２２）。
[C] When calculating the longitudinal linear curvature of a railway track (see Fig. 5)
(1) First, the angle of inclination is detected using an angle meter (gyro sensor, inclinometer, orientation sensor, etc.) (step S21).
(2) Next, based on the inclination angle, the relative angle γ ′ of the tangents C ′ and D ′ of the two points A ′ and B ′ of the
（３）一方、車輪回転計（ロータリーエンコーダなど）を用いて、距離信号（車輪回転パルスなど）を検出する（ステップＳ２３）。
（４）次に、距離信号に基づいて、鉄道軌道１１の２点Ａ′，Ｂ′間の距離ｄ′（サンプリング間隔）を計算する（ステップＳ２４）。
（５）次に、鉄道軌道１１の２点Ａ′，Ｂ′のそれぞれの接線Ｃ′，Ｄ′の相対角度γ′／鉄道軌道１１の２点Ａ′，Ｂ′間の距離ｄ′を計算し、曲率を求める（ステップＳ２５）。ここで、実際には、曲率（１／ｍ）＝軌道方向２点Ａ′，Ｂ′間の相対傾斜角γ′（ｒａｄ）／鉄道軌道１１の２点Ａ′，Ｂ′間の距離ｄ′（ｍ）を求める。
(3) On the other hand, a distance signal (wheel rotation pulse or the like) is detected using a wheel tachometer (rotary encoder or the like) (step S23).
(4) Next, based on the distance signal, the distance d ′ (sampling interval) between the two points A ′ and B ′ of the
(5) Next, the relative angle γ ′ of the tangents C ′ and D ′ of the two points A ′ and B ′ of the
（６）上記ステップＳ２５で得られているデータは角度計の分解能に依存した階段状波形なので、ローパスフィルタ処理を施す（ステップＳ２６）。それにより、鉄道軌道１１の管理に必要十分な精度の、滑らかな曲率が得られる。
このようにして、鉄道軌道の縦断線形の曲率を測定することができる。
〔Ｄ〕鉄道軌道の縦断線形の曲線半径を求める場合（図６参照）
（１）ステップＳ３１〜Ｓ３４は、上記した図５のステップＳ２１〜Ｓ２４と同様である。
(6) Since the data obtained in step S25 is a stepped waveform depending on the resolution of the goniometer, low-pass filter processing is performed (step S26). Thereby, a smooth curvature with sufficient accuracy necessary for the management of the
In this way, the longitudinal linear curvature of the railway track can be measured.
[D] When calculating the longitudinal radius of the railroad track (see Fig. 6)
(1) Steps S31 to S34 are the same as steps S21 to S24 in FIG.
（２）次に、鉄道軌道１１の２点Ａ′，Ｂ′間の距離ｄ′／鉄道軌道１１の２点Ａ′，Ｂ′のそれぞれの接線Ｃ′，Ｄ′の相対角度γ′を計算して、曲線半径Ｒ′を求める（ステップＳ３５）。
（３）次いで、ローパスフィルタ処理を施す（ステップＳ３６）。それにより、鉄道軌道１１の管理に必要十分な精度の、滑らかな曲線半径が得られる。
(2) Next, the distance d ′ between the two points A ′ and B ′ of the
(3) Next, low-pass filter processing is performed (step S36). Thereby, a smooth curve radius with sufficient accuracy necessary for the management of the
このようにして、鉄道軌道の縦断線形の曲線半径を測定することができる。
鉄道軌道の２点間の距離は、例えば、ＧＰＳを利用した場合には直前１秒間の移動距離が得られるので、それを元に計算することになる。この場合、２点間の距離は走行速度が低速であるほど小さくなる。また、実際の軌道検測車では、車輪の回転をエンコーダで検出するなど、何らかの形で等距離間隔の信号を得てデータを記録しているので、２点間の距離はこの信号の間隔に応じた定数となり、計算は非常に単純となる。
In this manner, the longitudinal linear curve radius of the railway track can be measured.
For example, when the GPS is used, the distance between the two points on the railroad track can be calculated based on the movement distance of the previous one second. In this case, the distance between the two points becomes smaller as the traveling speed is lower. Moreover, in an actual track inspection vehicle, the rotation of the wheel is detected by an encoder, and data is recorded by obtaining signals at equidistant intervals in some form, so the distance between the two points is the interval of this signal. The calculation is very simple.
図７は鉄道軌道の平面線形の軌道検測車での実測値と、本発明の測定方法での計算例を示す図であり、図７（ａ）は方位角を、図７（ｂ）は２点の方位角の差を、図７（ｃ）はローパスフィルタ処理前の正矢量を示し、図７（ｄ）はローパスフィルタで処理された正矢量を示しており、ｅは本発明による計算値、ｆは軌道検測車による実測値を示している。 FIG. 7 is a diagram showing an actual measurement value in a plane linear track inspection vehicle of a railway track and a calculation example using the measurement method of the present invention. FIG. 7A shows an azimuth angle, and FIG. FIG. 7 (c) shows the difference in azimuth between the two points, FIG. 7 (c) shows the amount of positive arrows before low-pass filter processing, FIG. 7 (d) shows the amount of positive arrows processed by the low-pass filter, and e is the calculation according to the present invention. The value f indicates an actual measurement value obtained by the track inspection vehicle.
これらの図に示すように、角度センサ（角度計）の分解能の関係で、この曲率の計算結果は、往々にして、角度センサの最小分解能を１ステップとした階段状になる。しかし、鉄道軌道の場合、車輪を円滑に通過させるというその役目から、ある点で急に折れ曲がるような箇所は存在せず、曲率がある程度なめらかに変化することは保証されている。このため、軌道管理上必要とされる波長より長い波長を通過させるローパスフィルタで処理することで、鉄道軌道の管理に必要十分な精度の、滑らかに変化した曲率、および曲率半径が得られる。 As shown in these drawings, due to the resolution of the angle sensor (angle meter), the calculation result of the curvature is often stepped with the minimum resolution of the angle sensor as one step. However, in the case of a railroad track, there is no portion that suddenly bends at a certain point because of its role of passing the wheels smoothly, and it is guaranteed that the curvature changes smoothly to some extent. For this reason, by performing processing with a low-pass filter that passes a wavelength longer than that required for track management, a smoothly changed curvature and a curvature radius necessary and sufficient for rail track management can be obtained.
なお、角度計によっては、測定途中で停止すると、時間経過に伴ってドリフトを発生し、計算誤差の要因となるが、２点間の相対角の計算の段階で、途中停止直後の数データにのみ便宜的に停止直前値を与える。誤差は単純なホールド処理により大幅に軽減できる。このような誤差軽減処理が実行できることも本発明の特徴である。
また、上記実施例では、軌道検測車による計測に基づいて曲率・曲線半径を測定する場合について述べたが、車両の形をなしていなくても、本発明の手法を用いて歩行速度で使えるポータブルな機器として展開することも可能である。
Depending on the angle meter, if it stops in the middle of the measurement, it will drift with the passage of time, causing a calculation error, but at the stage of calculating the relative angle between the two points, Only give the value just before the stop for convenience. The error can be greatly reduced by a simple hold process. It is also a feature of the present invention that such error reduction processing can be executed.
In the above embodiment, the case where the curvature / curve radius is measured based on the measurement by the track inspection vehicle has been described. However, even if the vehicle is not shaped, it can be used at the walking speed using the method of the present invention. It can also be deployed as a portable device.
なお、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。 In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.
本発明の鉄道軌道の曲率・曲線半径測定方法は、測定範囲を低速域にまで広げることができる鉄道軌道の曲率・曲線半径測定方法として利用可能である。 The method for measuring the curvature / curve radius of a railway track according to the present invention can be used as a method for measuring the curvature / curve radius of a railway track that can extend the measurement range to a low speed range.
１，１１ 軌道
Ａ，Ａ′，Ｂ，Ｂ′ 軌道上の２点
Ｃ，Ｃ′，Ｄ，Ｄ′ 鉄道軌道上の２点のそれぞれの接線
γ ２点のそれぞれの接線の相対角度
γ′ ２点のそれぞれの接線の相対角度
ｄ，ｄ′ 鉄道軌道の２点間の距離
Ｒ 鉄道軌道の平面線形の曲線半径
Ｒ′ 鉄道軌道の縦断線形の曲線半径
1,11 Track A, A ', B, B' Two points on the track C, C ', D, D' Each tangent of the two points on the rail track γ Relative angle of each tangent of the two points γ '2 Relative angle of tangent of each point d, d 'Distance between two points on railroad track R Curve radius of plane linearity of railroad track R' Curve radius of longitudinal linearity of railroad track
Claims (6)
（ｂ）該角度計により計測した情報に基づいて鉄道軌道の２点の接線の相対角度を求め、
（ｃ）一方、前記軌道検測車に車輪回転計をセットし、
（ｄ）該車輪回転計により計測した情報に基づいて前記鉄道軌道の２点間の距離を求め、
（ｅ）前記鉄道軌道の２点間の相対角度及び前記鉄道軌道の２点間の距離を所与の計算式に代入して計算結果を求め、
（ｆ）該計算結果にローパスフィルタ処理を施すことを特徴とする鉄道軌道の曲率・曲線半径測定方法。 (A) Set an angle meter on the track inspection vehicle,
(B) Based on the information measured by the goniometer, find the relative angle of the two tangents of the railway track,
(C) On the other hand, a wheel tachometer is set on the track inspection vehicle,
(D) Obtaining the distance between the two points on the railroad track based on the information measured by the wheel tachometer,
(E) Substituting the relative angle between the two points on the railroad track and the distance between the two points on the railroad track into a given calculation formula,
(F) A method for measuring the curvature / curve radius of a railway track, wherein the calculation result is subjected to low-pass filter processing.
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| KR101345582B1 (en) | 2012-11-13 | 2013-12-27 | 한국철도기술연구원 | Method for estimating a radius of curvature |
| JP2015174540A (en) * | 2014-03-14 | 2015-10-05 | 新日鐵住金株式会社 | On-rail attack angle measurement method of railway vehicle and device |
| CN109883317A (en) * | 2019-03-06 | 2019-06-14 | 株洲太昌电子信息技术股份有限公司 | A kind of railroad curve mapping method based on satellite positioning |
| CN114674197A (en) * | 2022-02-17 | 2022-06-28 | 成都飞机工业（集团）有限责任公司 | Airplane wire harness bending radius measuring method, device, equipment and medium |
| CN116244841A (en) * | 2022-12-19 | 2023-06-09 | 中国铁路设计集团有限公司 | Rail transit existing line longitudinal section fitting optimization method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101345582B1 (en) | 2012-11-13 | 2013-12-27 | 한국철도기술연구원 | Method for estimating a radius of curvature |
| JP2015174540A (en) * | 2014-03-14 | 2015-10-05 | 新日鐵住金株式会社 | On-rail attack angle measurement method of railway vehicle and device |
| CN109883317A (en) * | 2019-03-06 | 2019-06-14 | 株洲太昌电子信息技术股份有限公司 | A kind of railroad curve mapping method based on satellite positioning |
| CN109883317B (en) * | 2019-03-06 | 2020-10-13 | 株洲太昌电子信息技术股份有限公司 | Railway curve mapping method based on satellite positioning |
| CN114674197A (en) * | 2022-02-17 | 2022-06-28 | 成都飞机工业（集团）有限责任公司 | Airplane wire harness bending radius measuring method, device, equipment and medium |
| CN116244841A (en) * | 2022-12-19 | 2023-06-09 | 中国铁路设计集团有限公司 | Rail transit existing line longitudinal section fitting optimization method |
| CN116244841B (en) * | 2022-12-19 | 2024-02-09 | 中国铁路设计集团有限公司 | Rail transit existing line longitudinal section fitting optimization method |
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