JP4215362B2 - Train stop position detector - Google Patents

Train stop position detector Download PDF

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JP4215362B2
JP4215362B2 JP33390499A JP33390499A JP4215362B2 JP 4215362 B2 JP4215362 B2 JP 4215362B2 JP 33390499 A JP33390499 A JP 33390499A JP 33390499 A JP33390499 A JP 33390499A JP 4215362 B2 JP4215362 B2 JP 4215362B2
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train
stop position
voltage difference
coil
range
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JP2001151112A (en
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尚也 武田
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Kyosan Electric Manufacturing Co Ltd
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Kyosan Electric Manufacturing Co Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は列車停止位置検知装置に関し、詳細には列車が駅の停止位置許容範囲内に停止できた否か、更に列車の停止位置が当該停止位置許容範囲より手前か又は先かを検知する装置に関する。
【０００２】
【従来の技術】
従来より、列車が駅の所定の停止位置許容範囲内に停止したか否かを検知する際、近づいて来る列車の位置を検出するために、列車は電力波と呼ばれる電波を送信するトランスポンダ車上子（以下車上子と称す）を搭載し、一方車上子からの電波を受信するトランスポンダ地上子（以下地上子と称す）が駅の停止位置許容範囲となる軌道内に設置されている。
【０００３】
図３は従来の列車停止位置検知装置の概略を示す構成図である。図４は車上子位置と地上子の各コイルの受信レベルとの関係を示す特性図である。図３において、地上子３１は、列車進行方向に沿って並んだ３つのコイルＡ，Ｂ，Ｃを含んで構成されている。また、各コイルＡ，Ｂ，Ｃから出力される出力電圧（以下受信レベルと称す）Ｌａ，Ｌｂ，Ｌｃは比較器３３−ａ，３３−ｂ，３３−ｃの一方の入力端に各々入力され、比較器３３−ａ，３３−ｂ，３３−ｃの他方の入力端には後述する最小動作閾値Ｌｓが入力されている。更に、比較器３３−ａ，３３−ｂ，３３−ｃの出力は停止位置検知部３４に供給される。
【０００４】
次に、このような構成を有する従来の列車停止位置検知装置の動作について説明する。列車に搭載されている車上子３２が図中矢印で示す列車進行方向から地上子３１に近づくと、先ずコイルＡが誘起し、図４に示す受信レベルＬａを出力する。更に列車が進行して車上子３２が地上子３１のコイルＡに近づくと、コイルＡの受信レベルＬａは予め定められた固定の最小動作閾値Ｌｓを超える。このとき、停止位置検知部３４は、コイルＡの受信レベルＬａが最小動作閾値Ｌｓを超えたことを示す、比較器３３−ａの出力が「有効」（比較器３３−ａの出力「１」）となって地上子３１と車上子３２の間の距離ｈ（以下この距離を変位と呼ぶ）が基準となる距離（＝ｈ0 ）以下になったことを検知する。コイルＢ，Ｃにおいても同様に動作する。よって、３つのコイルの受信レベルを監視する地上装置３４は、３つのコイルの有効／無効の状態（比較器３３−ａ，３３−ｂ，３３−ｃの出力「１」，「０」）を監視することによって、列車の位置を検知することができるのである。そして、コイルＡとコイルＢの両方の受信レベルＬａ及びＬｂ、コイルＢのみの受信レベルＬｂ、そしてコイルＢとコイルＣの両方の受信レベルＬｂ及びＬｃが最小動作閾値Ｌｓを超えているときの車上子３２の位置範囲を通常時定位置停止領域Ｗ0 とし、停止位置検知部３４は各コイルの受信レベルを監視することにより列車が通常時定位置停止領域Ｗ0 内に停止したか否かを判断できる。言い換えれば、コイルＡの受信レベルＬａのみが最小動作閾値Ｌｓを超えているときは列車が定位置より手前であることを検知し、コイルＣの受信レベルＬｃのみが最小動作閾値Ｌｓを超えているときは列車が定位置をオーバーしたことを検知する。
【０００５】
【発明が解決しようとする課題】
しかしながら、上記従来の列車停止位置検知装置による検知方法によれば、動作最小閾値Ｌｓが予め定められた固定値であるために、列車条件、例えば乗車人数の変動、車上子の取付け位置の変動等によって、地上子３１と車上子３２の変位ｈ がｈ1 （例えば乗車人数増加のとき；ｈ1 ＜ｈ0 ）に変動した場合、図４で破線で示すように地上子３１の各コイルの受信レベルが変動してしまう。例えば、乗車人数が増加して列車の車高が下がると、変位が小さくなり、図４に示す各コイルの受信レベルの最大値Ｌ1 は通常時の各コイルの受信レベルの最大値Ｌ0 より高くなってしまう。すなわち、通常時と変位変動時における変位の差（ｈ0 −ｈ1 ）に相当する受信レベルの差（Ｌ1 −Ｌ0 ）分だけ各コイルの受信レベルが上がってしまう。これにより、図４に示すように、固定の動作最小閾値Ｌｓを超える範囲が広がり、通常時定位置停止領域Ｗ0 より広い変位変動時定位置停止領域Ｗ1 となってしまい、列車の停止位置の精度が悪化してしまうという問題点が発生する。
【０００６】
本発明はこの問題点を解決するためのものであり、車両条件が変動した場合でも安定かつ正確に列車の停止位置を検知することができる列車停止位置検知装置を提供することを目的とする。
【０００７】
【課題を解決するための手段】
前記問題点を解決するために、列車の停止位置を検知する、本発明の列車停止位置検知装置は、列車進行方向に沿って列車停止位置の前に設置される第１のコイルと列車停止位置の後に設置される第２のコイルとを有する地上子と、列車に搭載された車上子から送信される電力波を受信した第１のコイルからの第１の出力電圧から、車上子から送信される電力波を受信した第２のコイルからの第２の出力電圧を減算した電圧差を求める電圧差算出手段と、該電圧差算出手段により求めた電圧差の絶対値に基づいて列車が停止位置許容範囲内に停止しているか否かを判定し、停止位置許容範囲外であれば電圧差に基づいて停止位置許容範囲までの距離を算出する停止位置検知部とを有している。そして、本発明の列車停止位置検知装置によれば、電圧差算出手段により求めた電圧差の絶対値が所定の範囲内であれば停止位置許容範囲内に位置していると検知する。また、電圧差の絶対値が所定の範囲外であって電圧差の極性が正のときは列車が停止位置許容範囲より手前に位置していると検知し、かつ予め設定しておいた電圧差と距離の関係を参照して停止位置許容範囲まで列車を前進させるべき距離を数値化して求めている。一方、電圧差の絶対値が所定の範囲外であって電圧差の極性が負のときは列車が停止位置許容範囲より先に位置していると検知し、かつ予め設定しておいた電圧差と距離の関係を参照して停止位置許容範囲まで列車を後退させるべき距離を数値化して求めている。よって、本発明は車両条件が変動した場合でも列車の停止位置が停止位置許容範囲内であるか、手前か先かを安定かつ正確に検知することできると共に、停止位置許容範囲外からずれた距離を算出して算出した距離に基づいて停止位置補正を自動化できる。
【０００８】
【発明の実施の形態】
本発明の列車停止位置検知装置における地上子は、列車進行方向に沿って列車停止位置の前後に設置される２つのコイルを有している。また、電圧差算出手段は、列車に搭載された車上子から送信される電力波を受信した第１のコイルからの第１の出力電圧から、車上子から送信される電力波を受信した第２のコイルからの第２の出力電圧を減算した電圧差を求めている。更に、停止位置検知部は電圧差算出手段により求めた電圧差の絶対値に基づいて列車が停止位置許容範囲内に停止しているか否かを判定し、停止位置許容範囲外であれば電圧差に基づいて停止位置許容範囲までの距離を算出する。
【０００９】
【実施例】
図１は本発明の一実施例に係る列車停止位置検知装置の概略を示す構成図である。図２は車上子位置と地上子の各コイルの受信レベルの関係を示す特性図である。図１において、図３と同じ参照符号は同じ構成要素を示す。異なる構成要素として、本実施例の地上子３１は、列車進行方向に沿って停止位置の前後に並んで設置された２つのコイルＡ，Ｃを含んで構成されている。また、コイルＡから出力される受信レベルＬａは減算器１１の一方の入力端に、コイルＣから出力される受信レベルＬｃは減算器１１の他方の入力端に各々入力されている。更に、減算器１１の出力Ｌｄは比較器１２の一方の入力端に入力されると共に停止位置検知部３４にも入力されている。また、比較器１２の他方の入力端には後述する範囲閾値Ｌｄｓが入力されている。そして、比較器１２の出力は停止位置検知部３４に供給される。
【００１０】
次に、このような構成を有する本実施例による列車停止位置検知装置の動作について説明する。列車に搭載されている車上子３２が図中矢印で示す列車進行方向から地上子３１に近づくと、先ずコイルＡが誘起し、図２に示すコイルＡの受信レベルＬａを出力する。更に列車が進行して車上子３２が地上子３１のコイルＣにも近づくと、コイルＣも誘起して図２に示すコイルＣの受信レベルＬｃも出力する。このとき、停止位置検知部３４はコイルＡの受信レベルＬａからコイルＣの受信レベルＬｃを減算した差Ｌｄを減算器１１により算出し、比較器１２によって当該差Ｌｄを範囲閾値Ｌｄｓと比較することにより、地上子３１と車上子３２の間の位置を検知することができる。つまり、コイルＡの受信レベルＬａとコイルＣの受信レベルＬｃの差Ｌｄが範囲閾値Ｌｄｓ以下のときは差Ｌｄが範囲閾値Ｌｄｓ以下を示す「有効」（比較器１２の出力「１」）となり、停止位置検知部３４は列車が通常時定位置停止領域Ｗ０内に位置していると検知する。また、停止位置検知部３４は、コイルＡの受信レベルＬａからコイルＣの受信レベルＬｃを減算した値である差Ｌｄが範囲閾値Ｌｄｓより大きいときであって、コイルＡの受信レベルＬａがコイルＣの受信レベルＬｃより大きいときは列車が定位置領域より手前に位置していると検知し、差Ｌｄが範囲閾値Ｌｄｓより大きいときであって、コイルＡの受信レベルＬａがコイルＣの受信レベルＬｃより小さいときは列車が定位置領域より先に位置していると検知する。なお、コイルＡの受信レベルＬａとコイルＣの受信レベルＬｃとの大小は減算器１１の出力である差Ｌｄの極性によって判定できる。
【００１１】
なお、コイルＡの受信レベルＬａとコイルＣの受信レベルＬｃの差Ｌｄと、列車の位置との関係を予め統計的に測定しておけば、差Ｌｄを算出することで列車の位置を数値化できる。よって、図１の停止位置検知部３４は算出された差Ｌｄに基づいて定位置停止領域外からずれた距離を算出し、ずれた距離を含む停止位置補正情報を地上子３１を介して列車側の車上子３２に送信して列車側による停止位置補正を自動化できる。
【００１２】
ここで、列車条件、例えば乗車人数の変動、車上子の取付け位置の変動等が生じたときの本実施例による列車停止位置検知装置の動作について説明する。図１に示すように、地上子３１と車上子３２の変位ｈが通常時のｈ０からｈ １（例えば乗車人数増加のとき；ｈ１＜ｈ０）に変動した場合、図２に示すように地上子３１の各コイルＡ，Ｃの受信レベルＬａ，Ｌｃが変動してしまう。例えば、乗車人数が増加して列車の車高が下がると、変位が小さくなり、図２に示す各コイルの受信レベルの最大値Ｌ１は各コイルの受信レベルの最大値Ｌ０より高くなってしまう。すなわち、通常時と変位変動時における変位の差（ｈ０−ｈ１）に相当する受信レベルの差（Ｌ１−Ｌ０）分だけ各コイルの受信レベルが上がってしまう。しかし、本実施例では、上述のように、コイルＡの受信レベルＬａとコイルＣの受信レベルＬｃの差Ｌｄを算出してその差に応じて列車位置を検知しているため、図２に示すように列車条件が変動してもコイルＡの受信レベルＬａとコイルＣの受信レベルＬｃの差Ｌｄは変わらない。つまり、通常時定位置停止領域Ｗ０と変位変動時定位置停止領域Ｗ１とは等しいことになり、列車の停止位置の精度に影響を及ぼさない。
【００１３】
本実施例による列車停止位置検知装置によれば、単一コイル毎の受信レベルだけでなく、２つのコイルの受信レベルの差に基づいて列車の停止位置検知を行うことにより、列車条件が変動しても安定かつ正確に列車停止位置検知を行うことができる。
【００１４】
なお、本発明は上記実施例に限定されるものではなく、特許請求の範囲内の記載であれば多種の変形や置換可能であることは言うまでもない。
【００１５】
【発明の効果】
以上説明したように、列車の停止位置を検知する、本発明の列車停止位置検知装置は、列車進行方向に沿って列車停止位置の前に設置される第１のコイルと列車停止位置の後に設置される第２のコイルとを有する地上子と、列車に搭載された車上子から送信される電力波を受信した第１のコイルからの第１の出力電圧から、車上子から送信される電力波を受信した第２のコイルからの第２の出力電圧を減算した電圧差を求める電圧差算出手段と、該電圧差算出手段により求めた電圧差の絶対値に基づいて列車が停止位置許容範囲内に停止しているか否かを判定し、停止位置許容範囲外であれば電圧差に基づいて停止位置許容範囲までの距離を算出する停止位置検知部とを有している。そして、本発明の列車停止位置検知装置によれば、電圧差算出手段により求めた電圧差の絶対値が所定の範囲内であれば停止位置許容範囲内に位置していると検知する。また、電圧差の絶対値が所定の範囲外であって電圧差の極性が正のときは列車が停止位置許容範囲より手前に位置していると検知し、かつ予め設定しておいた電圧差と距離の関係を参照して停止位置許容範囲まで列車を前進させるべき距離を数値化して求めている。一方、電圧差の絶対値が所定の範囲外であって電圧差の極性が負のときは列車が停止位置許容範囲より先に位置していると検知し、かつ予め設定しておいた電圧差と距離の関係を参照して停止位置許容範囲まで列車を後退させるべき距離を数値化して求めている。よって、本発明は車両条件が変動した場合でも列車の停止位置が停止位置許容範囲内であるか、手前か先かを安定かつ正確に検知することできると共に、停止位置許容範囲外からずれた距離を算出して算出した距離に基づいて停止位置補正を自動化できる。
【図面の簡単な説明】
【図１】本発明の一実施例に係る列車停止位置検知装置の概略を示す構成図である。
【図２】通常時及び列車条件変動時における本実施例の車上子位置と地上子の各コイルの受信レベルの関係を示す図である。
【図３】従来の列車停止位置検知装置の概略を示す構成図である。
【図４】通常時及び列車条件変動時における従来例の車上子位置と地上子の各コイルの受信レベルの関係を示す図である。
【符号の説明】
１１；減算器、１２，３３−ａ，３３−ｂ，３３−ｃ；比較器、
３１；地上子、３２；車上子、３４；停止位置検知部。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a train stop position detecting device, and more specifically, an apparatus for detecting whether or not a train can be stopped within a stop position allowable range of a station, and further whether the stop position of the train is before or ahead of the stop position allowable range. About.
[0002]
[Prior art]
Conventionally, when detecting whether a train has stopped within a predetermined stop position tolerance range of the station, in order to detect the position of the approaching train, the train transmits a radio wave called a power wave on the transponder vehicle. On the other hand, a transponder ground element (hereinafter referred to as a ground element) that carries a child (hereinafter referred to as a vehicle element) and receives radio waves from the vehicle element is installed in a track that is within the allowable stop position range of the station.
[0003]
FIG. 3 is a block diagram showing an outline of a conventional train stop position detecting device. FIG. 4 is a characteristic diagram showing the relationship between the vehicle upper element position and the reception level of each coil of the ground element. In FIG. 3, the ground element 31 includes three coils A, B, and C arranged in the train traveling direction. Output voltages (hereinafter referred to as reception levels) La, Lb, and Lc output from the coils A, B, and C are respectively input to one input terminals of the comparators 33-a, 33-b, and 33-c. A minimum operation threshold value Ls, which will be described later, is input to the other input terminals of the comparators 33-a, 33-b, and 33-c. Further, the outputs of the comparators 33-a, 33-b and 33-c are supplied to the stop position detector 34.
[0004]
Next, the operation of the conventional train stop position detection apparatus having such a configuration will be described. When the vehicle upper element 32 mounted on the train approaches the ground element 31 from the train traveling direction indicated by the arrow in the drawing, the coil A is first induced to output the reception level La shown in FIG. When the train further advances and the vehicle upper 32 approaches the coil A of the ground child 31, the reception level La of the coil A exceeds a predetermined fixed minimum operation threshold Ls. At this time, the stop position detector 34 indicates that the output of the comparator 33-a is “valid” (the output “1” of the comparator 33-a) indicating that the reception level La of the coil A exceeds the minimum operation threshold Ls. ) And the distance h between the ground element 31 and the vehicle upper element 32 (hereinafter referred to as displacement) is detected to be equal to or less than the reference distance (= h 0 ). The coils B and C operate similarly. Therefore, the ground device 34 that monitors the reception levels of the three coils indicates the valid / invalid states of the three coils (outputs “1” and “0” of the comparators 33-a, 33-b, and 33-c). By monitoring, the position of the train can be detected. The vehicle when the reception levels La and Lb of both the coils A and B, the reception level Lb of only the coil B, and the reception levels Lb and Lc of both the coils B and C exceed the minimum operation threshold Ls. The position range of the upper element 32 is set as a normal fixed position stop area W 0 , and the stop position detector 34 monitors the reception level of each coil to determine whether or not the train has stopped within the normal fixed position stop area W 0 . Can be judged. In other words, when only the reception level La of the coil A exceeds the minimum operation threshold Ls, it is detected that the train is in front of the fixed position, and only the reception level Lc of the coil C exceeds the minimum operation threshold Ls. Sometimes it detects that the train has exceeded its home position.
[0005]
[Problems to be solved by the invention]
However, according to the detection method by the conventional train stop position detection device, the operation minimum threshold value Ls is a predetermined fixed value, so that the train condition, for example, the variation of the number of passengers, the variation of the mounting position of the vehicle upper part, etc. For example, when the displacement h 1 of the ground element 31 and the vehicle upper element 32 changes to h 1 (for example, when the number of passengers increases; h 1 <h 0 ), each coil of the ground element 31 is indicated by a broken line in FIG. The reception level of will fluctuate. For example, when the number of passengers increases and the train height decreases, the displacement decreases, and the maximum value L 1 of the reception level of each coil shown in FIG. 4 is larger than the maximum value L 0 of the reception level of each coil at normal time. It will be high. That is, the reception level of each coil is increased by the difference (L 1 −L 0 ) in the reception level corresponding to the difference in displacement (h 0 −h 1 ) between the normal time and the displacement fluctuation. As a result, as shown in FIG. 4, the range exceeding the fixed minimum operation threshold value Ls is widened to become a displacement variation fixed position stop area W 1 wider than the normal fixed position stop area W 0 , and the train stop position. This causes a problem that the accuracy of the process deteriorates.
[0006]
The present invention is for solving this problem, and an object of the present invention is to provide a train stop position detection device that can detect a stop position of a train stably and accurately even when vehicle conditions fluctuate.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the train stop position detection device of the present invention that detects a train stop position is a first coil and a train stop position installed in front of the train stop position along the train traveling direction. a ground coil and a second coil installed after, the first output voltage from the first coil receiving the power wave transmitted from the on-board coil mounted on the train, from the pickup coil A voltage difference calculating means for obtaining a voltage difference obtained by subtracting the second output voltage from the second coil that has received the transmitted power wave , and a train based on the absolute value of the voltage difference obtained by the voltage difference calculating means. stop the stop position within the allowable range is whether determined by, and have a the stop position detecting unit that calculates a distance to the stop position allowable range based on the voltage difference if the stop position unacceptable. And according to the train stop position detection apparatus of this invention, if the absolute value of the voltage difference calculated | required by the voltage difference calculation means is in a predetermined range, it will detect that it is located in a stop position allowable range. In addition, when the absolute value of the voltage difference is outside the predetermined range and the polarity of the voltage difference is positive, it is detected that the train is positioned in front of the stop position allowable range, and the preset voltage difference The distance to which the train should be advanced to the stop position allowable range is obtained numerically by referring to the relationship between the distance and the distance. On the other hand, when the absolute value of the voltage difference is outside the predetermined range and the polarity of the voltage difference is negative, it is detected that the train is positioned ahead of the allowable stop position range, and the preset voltage difference The distance to which the train should be moved back to the stop position allowable range is calculated by referring to the relationship between the distance and the distance. Therefore, the present invention can stably and accurately detect whether the stop position of the train is within the allowable stop position range or near or ahead even when the vehicle conditions fluctuate, and the distance deviated from outside the allowable stop position range. The stop position correction can be automated based on the calculated distance .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The ground element in the train stop position detection apparatus of the present invention has two coils installed before and after the train stop position along the train traveling direction. Moreover, the voltage difference calculation means has received the power wave transmitted from the vehicle upper arm from the first output voltage from the first coil that has received the power wave transmitted from the vehicle upper arm mounted on the train. A voltage difference obtained by subtracting the second output voltage from the second coil is obtained. Further , the stop position detector determines whether the train is stopped within the stop position allowable range based on the absolute value of the voltage difference obtained by the voltage difference calculating means. Based on the above, the distance to the stop position allowable range is calculated .
[0009]
【Example】
FIG. 1 is a configuration diagram showing an outline of a train stop position detection apparatus according to an embodiment of the present invention. FIG. 2 is a characteristic diagram showing the relationship between the vehicle upper element position and the reception level of each coil of the ground element. 1 , the same reference numerals as those in FIG. 3 denote the same components. As a different component, the ground element 31 of the present embodiment is configured to include two coils A and C installed side by side along the train traveling direction and before and after the stop position. The reception level La output from the coil A is input to one input terminal of the subtractor 11, and the reception level Lc output from the coil C is input to the other input terminal of the subtractor 11. Further, the output Ld of the subtractor 11 is input to one input terminal of the comparator 12 and also input to the stop position detector 34. In addition, a range threshold value Lds described later is input to the other input terminal of the comparator 12. Then, the output of the comparator 12 is supplied to the stop position detector 34.
[0010]
Next, the operation of the train stop position detection apparatus according to this embodiment having such a configuration will be described. When the vehicle upper element 32 mounted on the train approaches the ground element 31 from the train traveling direction indicated by an arrow in the figure, the coil A is first induced to output the reception level La of the coil A shown in FIG . When the train further advances and the vehicle upper 32 approaches the coil C of the ground child 31, the coil C is also induced to output the reception level Lc of the coil C shown in FIG . At this time, the stop position detection unit 34 calculates a difference Ld obtained by subtracting the reception level Lc of the coil C from the reception level La of the coil A by the subtractor 11, and compares the difference Ld with the range threshold value Lds by the comparator 12. Thus, the position between the ground element 31 and the vehicle upper element 32 can be detected. That is, when the difference Ld between the reception level La of the coil A and the reception level Lc of the coil C is equal to or smaller than the range threshold Lds, the difference Ld becomes “valid” (output “1” of the comparator 12) indicating that it is equal to or smaller than the range threshold Lds. stop position detecting unit 34 detects the train is located in the normal position stop region W within 0. The stop position detection unit 34 is when the difference Ld, which is a value obtained by subtracting the reception level Lc of the coil C from the reception level La of the coil A, is larger than the range threshold Lds, and the reception level La of the coil A is Is greater than the reception threshold level Lc, it is detected that the train is positioned in front of the fixed position region, the difference Ld is greater than the range threshold Lds, and the reception level La of the coil A is equal to the reception level Lc of the coil C. When it is smaller, it is detected that the train is located before the fixed position area. The magnitude of the reception level La of the coil A and the reception level Lc of the coil C can be determined by the polarity of the difference Ld that is the output of the subtractor 11.
[0011]
If the relationship between the difference Ld between the reception level La of the coil A and the reception level Lc of the coil C and the position of the train is statistically measured in advance, the position of the train is quantified by calculating the difference Ld. it can. Therefore, the stop position detection unit 34 in FIG. 1 calculates the distance deviated from outside the fixed position stop area based on the calculated difference Ld, and the stop position correction information including the deviated distance is transmitted to the train side via the ground unit 31. It is possible to automate the stop position correction on the train side.
[0012]
Here, the operation of the train stop position detecting device according to the present embodiment when a train condition, for example, a change in the number of passengers, a change in the mounting position of the vehicle upper arm, etc. occurs will be described. As shown in FIG. 1, the displacement h of ground coils 31 and pickup coil 32 is h 0 or et h 1 in the normal (e.g., when the number of passengers increases; h 1 <h 0) when fluctuated, Figure 2 As shown, the reception levels La and Lc of the coils A and C of the ground unit 31 fluctuate. For example, when the number of passengers increases and the train height decreases, the displacement decreases, and the maximum reception level L 1 of each coil shown in FIG. 2 becomes higher than the maximum reception level L 0 of each coil. End up. That is, the reception level of each coil is increased by the difference (L 1 -L 0 ) in the reception level corresponding to the difference in displacement (h 0 -h 1 ) between the normal time and the displacement fluctuation. However, in this embodiment, as described above, since the difference Ld between the reception level La of the coil A and the reception level Lc of the coil C is calculated and the train position is detected according to the difference, it is shown in FIG. Thus, even if the train conditions fluctuate, the difference Ld between the reception level La of the coil A and the reception level Lc of the coil C does not change. In other words, it will be equal to a normal fixed-position stop region W 0 and the displacement variation when a fixed-position stop regions W 1, does not affect the accuracy of the train stop position.
[0013]
According to the train stop position detection device according to the present embodiment, the train condition varies depending on the train stop position detection based on the difference between the reception levels of the two coils as well as the reception level of each single coil. However, the train stop position can be detected stably and accurately.
[0014]
In addition, this invention is not limited to the said Example, It cannot be overemphasized that various deformation | transformation and substitution are possible if it is description in a claim.
[0015]
【The invention's effect】
As described above, the train stop position detection device of the present invention that detects the stop position of the train is installed after the first coil and the train stop position installed in front of the train stop position along the train traveling direction. a ground coil and a second coil that is, from the first output voltage from the first coil receiving the power wave transmitted from the on-board coil mounted on the train is transmitted from the pickup coil A voltage difference calculation means for obtaining a voltage difference obtained by subtracting the second output voltage from the second coil that has received the power wave , and the train is allowed to stop at a stop position based on the absolute value of the voltage difference obtained by the voltage difference calculation means. It determines whether to stop within the range, which possess the stop position detecting unit that calculates a distance to the stop position allowable range based on the voltage difference if the stop position unacceptable. And according to the train stop position detection apparatus of this invention, if the absolute value of the voltage difference calculated | required by the voltage difference calculation means is in a predetermined range, it will detect that it is located in a stop position allowable range. In addition, when the absolute value of the voltage difference is outside the predetermined range and the polarity of the voltage difference is positive, it is detected that the train is positioned in front of the stop position allowable range, and the preset voltage difference The distance to which the train should be advanced to the stop position allowable range is obtained numerically by referring to the relationship between the distance and the distance. On the other hand, when the absolute value of the voltage difference is outside the predetermined range and the polarity of the voltage difference is negative, it is detected that the train is positioned ahead of the allowable stop position range, and the preset voltage difference The distance to which the train should be moved back to the stop position allowable range is calculated by referring to the relationship between the distance and the distance. Therefore, the present invention can stably and accurately detect whether the stop position of the train is within the allowable stop position range or near or ahead even when the vehicle conditions fluctuate, and the distance deviated from outside the allowable stop position range. The stop position correction can be automated based on the calculated distance .
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an outline of a train stop position detection apparatus according to an embodiment of the present invention.
FIG. 2 is a diagram showing the relationship between the vehicle upper element position of this embodiment and the reception level of each coil of the ground element during normal times and when train conditions vary.
FIG. 3 is a configuration diagram showing an outline of a conventional train stop position detection device.
FIG. 4 is a diagram showing a relationship between a vehicle upper element position and a reception level of each coil of the ground element in a conventional example during normal times and when train conditions vary.
[Explanation of symbols]
11; subtractor, 12, 33-a, 33-b, 33-c; comparator,
31; ground element, 32; vehicle upper element, 34; stop position detector.

Claims (1)

列車の停止位置を検知する列車停止位置検知装置において、
列車進行方向に沿って列車停止位置の前に設置される第１のコイルと列車停止位置の後に設置される第２のコイルとを有する地上子と、
列車に搭載された車上子から送信される電力波を受信した第１のコイルからの第１の出力電圧から、車上子から送信される電力波を受信した第２のコイルからの第２の出力電圧を減算した電圧差を求める電圧差算出手段と、
該電圧差算出手段により求めた前記電圧差の絶対値に基づいて列車が停止位置許容範囲内に停止しているか否かを判定し、停止位置許容範囲外であれば前記電圧差に基づいて停止位置許容範囲までの距離を算出する停止位置検知部とを有し、
前記電圧差算出手段により求めた前記電圧差の絶対値が所定の範囲内であれば停止位置許容範囲内に位置していると検知し、前記電圧差の絶対値が所定の範囲外であって前記電圧差の極性が正のときは列車が停止位置許容範囲より手前に位置していると検知し、かつ予め設定しておいた前記電圧差と距離の関係を参照して停止位置許容範囲まで列車を前進させるべき距離を数値化して求め、前記電圧差の絶対値が所定の範囲外であって前記電圧差の極性が負のときは列車が停止位置許容範囲より先に位置していると検知し、かつ予め設定しておいた前記電圧差と距離の関係を参照して停止位置許容範囲まで列車を後退させるべき距離を数値化して求めることを特徴とする列車停止位置検知装置。In the train stop position detection device that detects the stop position of the train,
A ground element having a first coil installed before the train stop position along the train traveling direction and a second coil installed after the train stop position;
From the first output voltage from the first coil that has received the power wave transmitted from the vehicle upper element mounted on the train, the second from the second coil that has received the power wave transmitted from the vehicle upper element . Voltage difference calculating means for obtaining a voltage difference obtained by subtracting the output voltage of
Based on the absolute value of the voltage difference obtained by the voltage difference calculating means, it is determined whether or not the train is stopped within the allowable stop position range. If the train is outside the allowable stop position range, the train is stopped based on the voltage difference. calculates a distance to the position tolerance possess the stop position detecting unit,
If the absolute value of the voltage difference obtained by the voltage difference calculation means is within a predetermined range, it is detected that the voltage difference is outside the predetermined range. When the polarity of the voltage difference is positive, it is detected that the train is positioned before the stop position allowable range, and the preset relationship between the voltage difference and the distance is referred to the stop position allowable range. If the absolute value of the voltage difference is outside a predetermined range and the polarity of the voltage difference is negative, the train is positioned before the stop position allowable range A train stop position detecting device characterized in that the distance by which the train is to be moved back to the stop position allowable range is quantified and obtained by referring to the relationship between the voltage difference and the distance set in advance .
JP33390499A 1999-11-25 1999-11-25 Train stop position detector Expired - Fee Related JP4215362B2 (en)

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JP4907913B2 (en) * 2005-07-11 2012-04-04 東海旅客鉄道株式会社 Railway vehicle position detector
JP4646833B2 (en) * 2006-03-06 2011-03-09 株式会社京三製作所 Information transmission equipment
JP4999754B2 (en) * 2008-03-31 2012-08-15 東京地下鉄株式会社 Train stop position detector
JP4958827B2 (en) * 2008-03-31 2012-06-20 東京地下鉄株式会社 Train stop position detector
JP5511593B2 (en) * 2010-08-30 2014-06-04 株式会社京三製作所 Train stop position detector
DE102011088891A1 (en) * 2011-12-16 2013-06-20 Siemens Aktiengesellschaft Method for increasing positioning accuracy of moving object i.e. rail vehicle, involves detecting metal strips of object when sensor falls below response threshold spacing, and generating and utilizing output signal as locating criterion

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