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JP2022076220A - Train detection device with failure diagnosing function and failure portion determination method - Google Patents

Train detection device with failure diagnosing function and failure portion determination method Download PDF

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JP2022076220A
JP2022076220A JP2020186536A JP2020186536A JP2022076220A JP 2022076220 A JP2022076220 A JP 2022076220A JP 2020186536 A JP2020186536 A JP 2020186536A JP 2020186536 A JP2020186536 A JP 2020186536A JP 2022076220 A JP2022076220 A JP 2022076220A
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康之 松脇
Yasuyuki Matsuwaki
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Daido Signal Co Ltd
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Abstract

To improve a train detection device with a failure diagnosing function for diagnosing the quality of energization relating to a track circuit such that the track circuit can be easily recovered from the failure.SOLUTION: New failure diagnosis parts 50 to 70 are added to train detection devices 20 to 40 with a basic configuration. The failure diagnosis parts 50 to 70 include a time domain reflectance measuring part 52 sending a pulse signal B to a train detection signal transmitting cable 32 to measure a reflection signal BR, a transmission side diagnosis part 53 measuring the presence/absence and a portion of failure based on the measurement result, a time domain reflectance measuring part 62 sending a pulse signal C to a train detection signal receiving cable 42 to measure a reflection signal CR, and diagnosis parts 53, 63, 70 measuring the presence/absence and a portion of failure relating to the cables 32, 42 based on the measurement results. The investigation of a rail part 20 is performed after it is diagnosed that there is no failure in both of the cables 32, 42.SELECTED DRAWING: Figure 1

Description

この発明は、軌道回路を用いて列車在線の有無を検出する列車検知装置に関し、詳しくは、軌道回路に係る通電の良否を診断する故障診断機能付き列車検知装置に関する。
故障診断機能付き列車検知装置を利用して行う故障部位判別方法にも関する。
The present invention relates to a train detection device that detects the presence or absence of a train on a track circuit using a track circuit, and more particularly to a train detection device with a failure diagnosis function that diagnoses the quality of energization related to the track circuit.
It is also related to the method of determining the failure part using the train detection device with the failure diagnosis function.

軌道回路は(例えば非特許文献1参照)、二本のレールが列車の車輪と車軸とで電気的に短絡することを利用して送電端(一端,始端)から送電した電力が受電端(他端,終端)に届くか否かに応じて列車の在線/非在線を検出する列車検知機能を発揮するものであるが、その機能だけでなく、次のレール破断検知機能も発揮することができる。
すなわち、列車の走行等による大きな外力を受けた軌道に亀裂・破断・折損といったレール破断障害が発生したときも、そこの通電状態が悪化して、列車非在線状態であっても受電側の電圧や電流が低下したり更には途絶するといった状況に至るため、受電信号からレール破断状態の情報を得るというレール破断検知機能も発揮することができる。
In the track circuit (see, for example, Non-Patent Document 1), the power transmitted from the transmitting end (one end, the starting end) by utilizing the electric short circuit between the two rails between the train wheel and the axle is used as the receiving end (other). It exerts a train detection function that detects the presence / absence of a train depending on whether or not it reaches the end (end, end), but it can also exert not only that function but also the next rail breakage detection function. ..
That is, even when a rail rupture failure such as a crack, break, or break occurs in a track that receives a large external force due to the running of a train, the energized state there deteriorates and the voltage on the power receiving side even when the train is absent. The rail breakage detection function, which obtains information on the rail breakage state from the received signal, can also be exhibited because the current may drop or even be interrupted.

また、そのような通電悪化時にレール破断箇所などの故障部位を探索する手段として、軌道回路の並走レールの双方について交流電流を測定する人力走行式の軌道回路電流測定装置や(例えば特許文献2参照)、自走式の検測車が(例えば特許文献5段落0008参照)、使用されている。
更に、軌道回路の送電端と受電端とから電圧値と電流値とを継続的に測定して、その蓄積データから所定の特性値を算出して、その算出値に基づく場合分けによって送信ケーブルとレールと受信ケーブルとについて短絡と断線を判別するようになったものがある(例えば特許文献4参照)。
Further, as a means for searching for a faulty part such as a rail breakage when the energization deteriorates, a human-powered track circuit current measuring device for measuring AC current for both parallel rails of the track circuit and a human-powered track circuit current measuring device (for example, Patent Document 2). (See), self-propelled inspection vehicles (see, for example, Patent Document 5, paragraph 0008) are used.
Furthermore, the voltage value and current value are continuously measured from the power transmission end and the power reception end of the track circuit, a predetermined characteristic value is calculated from the accumulated data, and the transmission cable is classified according to the case based on the calculated value. Some rails and receiving cables have come to discriminate between short circuits and disconnections (see, for example, Patent Document 4).

更に、列車検知信号の送出を時分割で間欠的に行うようになったものもある(例えば特許文献1参照)。
更に、レール腹部などに光ファイバセンサを貼り付けることで鉄道用レールに沿って光ファイバセンサを布設し、この光ファイバセンサからの歪み情報に基づいて軌道の歪ひいては列車停止位置を検出するようになったシステムもある(例えば特許文献3参照)。このシステムでは、光ファイバに適した歪み測定・変位測定の手法として、BOTDR(Brillouin Optical Time Domain Reflectmetory)などが用いられている。
Further, there are some train detection signals that are intermittently transmitted in a time-division manner (see, for example, Patent Document 1).
Furthermore, by attaching an optical fiber sensor to the abdomen of the rail, an optical fiber sensor is laid along the railroad rail, and the strain information of the optical fiber sensor is used to detect the strain of the track and the train stop position. There is also a system that has become (see, for example, Patent Document 3). In this system, BOTDR (Brillouin Optical Time Domain Reflectometory) or the like is used as a strain measurement / displacement measurement method suitable for an optical fiber.

特開2008-265626号公報Japanese Unexamined Patent Publication No. 2008-265626 特開2010-234875号公報Japanese Unexamined Patent Publication No. 2010-234875 特開2010-195246号公報Japanese Unexamined Patent Publication No. 2010-195246 特開2011-207449号公報Japanese Unexamined Patent Publication No. 2011-207449 特開2020-152172号公報Japanese Unexamined Patent Publication No. 2020-152172

鉄道技術者のための信号概論「軌道回路」 社団法人「日本鉄道電気技術協会」出版、平成17年5月20日 改訂版2刷発行、p.3~5Introduction to Signals for Railway Engineers "Track Circuits" Published by "Japan Railway Electrical Technology Association", May 20, 2005, revised edition 2nd edition, p. 3-5

このような時間領域反射(TDR,Time Domain Reflectmetory)を利用した反射率測定法は、適用対象が光ファイバに限られる訳でなく、メタル配線などを対象とした断線位置検出等に用いることもできる。
そこで、時間領域反射率測定を軌道回路に対して直に適用すれば、レールに光ファイバを付設しなくて済むため、低廉なコストで、レール破断やケーブル断線といった故障の有無に加えて故障の部位までも検出することができそうに思える。
Such a reflectance measurement method using a time domain reflectometry (TDR) is not limited to an optical fiber, but can also be used for detecting a disconnection position for metal wiring or the like. ..
Therefore, if the time domain reflectometry is applied directly to the track circuit, it is not necessary to attach an optical fiber to the rail, so at a low cost, in addition to the presence or absence of failure such as rail breakage or cable disconnection, failure It seems that even the part can be detected.

しかしながら、線路に敷設されているレールの大半は鉄製であるうえ長いことから、電気抵抗が大きくなりがちなので、時間領域反射率測定を直にレールへ適用するには大出力の装置が必要になるため、却ってコストが嵩みかねない。
また、軌道回路の重要部であるレールに係る破断位置の検出については、既述したような人力走行式や自走式の検測車を使用するといったことで、リアルタイム性には欠けるが、コストを抑えつつ所望の検出を行うことができる。
However, since most of the rails laid on the track are made of iron and are long, the electrical resistance tends to be large, so a high-power device is required to apply the time domain reflectometry directly to the rail. Therefore, the cost may increase on the contrary.
In addition, regarding the detection of the break position related to the rail, which is an important part of the track circuit, the cost is lacking in real time because the human-powered or self-propelled inspection vehicle as described above is used. It is possible to perform desired detection while suppressing the above.

これに対し、軌道回路のうち送信ケーブルや受信ケーブルといった列車検知信号伝送ケーブルに係る断線位置の検出については、レールと逆の特質が見られる。すなわち、それらの伝送ケーブルは、銅線などの良導体が多用されるので、導電性には優れるが、細く柔らかので、検測車の使用には適していない。そのため、伝送ケーブルに断線等の不具合が発生したことが判明したときには、しばしば伝送ケーブルを丸ごと取り替えるといった対処が行われるので、障害復旧作業の負担が大きい。
そこで、軌道回路に係る通電の良否を診断する故障診断機能付き列車検知装置について軌道回路を障害から容易に復旧させられるように改良することが技術的な課題となる。
On the other hand, in the track circuit, the detection of the disconnection position related to the train detection signal transmission cable such as the transmission cable and the reception cable has the opposite characteristics to the rail. That is, these transmission cables are excellent in conductivity because good conductors such as copper wires are often used, but they are thin and soft, so that they are not suitable for use in inspection cars. Therefore, when it is found that a problem such as a disconnection occurs in the transmission cable, a countermeasure such as replacing the entire transmission cable is often taken, so that the burden of failure recovery work is heavy.
Therefore, it is a technical issue to improve the train detection device with a failure diagnosis function for diagnosing the quality of energization related to the track circuit so that the track circuit can be easily recovered from the failure.

本発明の故障診断機能付き列車検知装置は(解決手段1)、このような課題を解決するために創案されたものであり、
列車検知信号は通過させるがパルス信号は反射するインピーダンス整合部材を介して一端がレール部の一端に接続され他端が列車検知信号の送信機および受信機のうち何れか一方に接続される列車検知信号伝送ケーブルと、該ケーブルに接続されてパルス信号を送出するとともにその反射信号を測定する時間領域反射率測定部と、その測定結果に基づいて前記列車検知信号伝送ケーブルに係る不具合の有無および部位を判別する診断部とを具備している。
The train detection device with a failure diagnosis function of the present invention (solution 1) was devised to solve such a problem.
Train detection where one end is connected to one end of the rail section and the other end is connected to either the transmitter or receiver of the train detection signal via an impedance matching member that passes the train detection signal but reflects the pulse signal. A signal transmission cable, a time region reflectance measuring unit that is connected to the cable to send a pulse signal and measures the reflected signal, and the presence / absence and location of a defect related to the train detection signal transmission cable based on the measurement result. It is equipped with a diagnostic unit for discriminating.

また、本発明の故障診断機能付き列車検知装置は(解決手段2)、上記解決手段1の故障診断機能付き列車検知装置であって、
前記列車検知信号の送信が間欠的に行われるようになっており、前記時間領域反射率測定部が前記列車検知信号の検出を行って該信号の無い時間帯に限って前記パルス信号の送出を行うようになっている、ことを特徴とする。
Further, the train detection device with a failure diagnosis function of the present invention (solution means 2) is a train detection device with a failure diagnosis function of the above-mentioned solution means 1.
The train detection signal is transmitted intermittently, and the time domain reflectometry unit detects the train detection signal and sends the pulse signal only in a time zone when the signal is absent. It is characterized by being designed to do.

さらに、本発明の故障診断機能付き列車検知装置は(解決手段3)、上記解決手段1の故障診断機能付き列車検知装置であって、
前記送信部が前記列車検知信号の送信を間欠的に行うとともに該送信のタイミングを前記時間領域反射率測定部に通知するようになっており、前記時間領域反射率測定部が前記通知に応じて前記パルス信号の送出とその反射信号の測定とを行うようになっている、ことを特徴とする。
Further, the train detection device with a failure diagnosis function of the present invention (solution 3) is a train detection device with a failure diagnosis function of the above-mentioned solution 1.
The transmission unit intermittently transmits the train detection signal and notifies the time domain reflectometry measurement unit of the transmission timing, and the time domain reflectometry measurement unit responds to the notification. It is characterized in that the pulse signal is transmitted and the reflected signal is measured.

また、本発明の故障診断機能付き列車検知装置は(解決手段4)、上記解決手段1の故障診断機能付き列車検知装置であって、
前記列車検知信号が途絶えたことを検出する列車検知信号途絶検出手段が設けられており、その検出に応じて前記時間領域反射率測定部が前記パルス信号の送出とその反射信号の測定とを行うようになっている、ことを特徴とする。
Further, the train detection device with a failure diagnosis function of the present invention (solution 4) is a train detection device with a failure diagnosis function of the above-mentioned solution 1.
A train detection signal interruption detection means for detecting the interruption of the train detection signal is provided, and the time domain reflectometry measuring unit transmits the pulse signal and measures the reflected signal in response to the detection. It is characterized by being like this.

また、本発明の故障診断機能付き列車検知装置は(解決手段5)、上記解決手段1の故障診断機能付き列車検知装置であって、
前記列車検知信号から前記反射信号を弁別する信号弁別手段が設けられており、その弁別にて得られた信号を用いて前記時間領域反射率測定部が反射信号測定を行うようになっている、ことを特徴とする。
Further, the train detection device with a failure diagnosis function of the present invention (solution 5) is a train detection device with a failure diagnosis function of the above-mentioned solution 1.
A signal discrimination means for discriminating the reflected signal from the train detection signal is provided, and the time domain reflectometry measuring unit measures the reflected signal using the signal obtained by the discrimination. It is characterized by that.

また、本発明の故障診断機能付き列車検知装置は(解決手段6)、上述した課題を高度に解決するために創案されたものであり、
列車検知信号は通過させるがパルス信号は反射するインピーダンス整合部材を介して一端がレール部の一端に接続された列車検知信号送信ケーブルを介して列車検知信号を前記レール部に送信する送信部と、前記列車検知信号は通過させるがパルス信号は反射するインピーダンス整合部材を介して前記レール部の他端に接続された列車検知信号受信ケーブルを介して前記列車検知信号を前記レール部から受信する受信部と、前記列車検知信号送信ケーブルに接続されてパルス信号を送出するとともにその反射信号を測定する送信側時間領域反射率測定部と、その測定結果に基づいて前記列車検知信号送信ケーブルに係る不具合の有無および部位を判別する送信側診断部と、前記列車検知信号受信ケーブルに接続されてパルス信号を送出するとともにその反射信号を測定する受信側時間領域反射率測定部と、その測定結果に基づいて前記列車検知信号受信ケーブルに係る不具合の有無および部位を判別する受信側診断部とを備えている。
Further, the train detection device with a failure diagnosis function of the present invention (Solution 6) was devised in order to solve the above-mentioned problems to a high degree.
A transmission unit that transmits a train detection signal to the rail unit via a train detection signal transmission cable whose one end is connected to one end of the rail unit via an impedance matching member that allows the train detection signal to pass but reflects. A receiving unit that receives the train detection signal from the rail unit via a train detection signal receiving cable connected to the other end of the rail unit via an impedance matching member that allows the train detection signal to pass but reflects the pulse signal. And, a defect related to the transmission side time region reflectance measuring unit that is connected to the train detection signal transmission cable to transmit a pulse signal and measure the reflected signal, and the train detection signal transmission cable based on the measurement result. Based on the transmission side diagnostic unit that determines the presence / absence and the site, the reception side time region reflectance measurement unit that is connected to the train detection signal reception cable to transmit a pulse signal and measures the reflection signal, and the measurement result. It is provided with a receiving side diagnostic unit for determining the presence / absence of a defect and a portion of the train detection signal receiving cable.

また、本発明の故障診断機能付き列車検知装置は(解決手段7)、上記解決手段6の故障診断機能付き列車検知装置であって、
前記列車検知信号の送信が間欠的に行われるようになっており、前記送信側時間領域反射率測定部も前記受信側時間領域反射率測定部も前記列車検知信号の無い時間帯にパルス信号送出と反射信号測定とを行うようになっている、ことを特徴とする。
Further, the train detection device with a failure diagnosis function of the present invention (solution 7) is a train detection device with a failure diagnosis function of the above-mentioned solution 6.
The train detection signal is transmitted intermittently, and both the transmitting side time region reflectance measuring unit and the receiving side time region reflectance measuring unit transmit pulse signals in a time zone when there is no train detection signal. It is characterized in that it is designed to measure and reflect signals.

また、本発明の故障診断機能付き列車検知装置は(解決手段8)、上記解決手段6の故障診断機能付き列車検知装置であって、
前記列車検知信号が途絶えたことを検出する列車検知信号途絶検出手段が設けられており、その検出に応じて前記送信側時間領域反射率測定部も前記受信側時間領域反射率測定部も前記列車検知信号の無い時間帯にパルス信号送出と反射信号測定とを行うようになっている、ことを特徴とする。
Further, the train detection device with a failure diagnosis function of the present invention (solution 8) is a train detection device with a failure diagnosis function of the above-mentioned solution 6.
A train detection signal interruption detection means for detecting the interruption of the train detection signal is provided, and the transmitting side time region reflectance measuring unit and the receiving side time region reflectance measuring unit both respond to the detection of the train. It is characterized in that pulse signal transmission and reflection signal measurement are performed during a time period when there is no detection signal.

また、本発明の故障診断機能付き列車検知装置は(解決手段9)、上記解決手段6の故障診断機能付き列車検知装置であって、
前記列車検知信号から前記反射信号を弁別する信号弁別手段が設けられており、その弁別にて得られた信号を用いて前記送信側時間領域反射率測定部も前記受信側時間領域反射率測定部も反射信号測定を行うようになっている、ことを特徴とする。
Further, the train detection device with a failure diagnosis function of the present invention (solution 9) is a train detection device with a failure diagnosis function of the above-mentioned solution 6.
A signal discrimination means for discriminating the reflected signal from the train detection signal is provided, and the transmitting side time domain reflectometry measuring unit also uses the signal obtained by the discrimination to measure the receiving side time domain reflectometry. It is also characterized in that it is designed to measure reflected signals.

また、本発明の故障診断機能付き列車検知装置は(解決手段10)、上記解決手段1~9の故障診断機能付き列車検知装置であって、
前記時間領域反射率測定部による測定結果と前記診断部による判別結果とを含む情報を収集して時系列データに蓄積するデータ蓄積手段を具備している、ことを特徴とする。
Further, the train detection device with a failure diagnosis function of the present invention (solution means 10) is a train detection device with a failure diagnosis function of the above-mentioned solutions 1 to 9.
It is characterized by comprising a data storage means for collecting information including a measurement result by the time domain reflectometry unit and a discrimination result by the diagnostic unit and accumulating it in time series data.

また、本発明の故障部位判別方法は(解決手段11)、上述した解決手段6~10のうち何れか一つに記載された故障診断機能付き列車検知装置を装備した軌道回路について前記列車検知装置の判別結果を利用して不具合の発生部位を探す故障部位判別方法であって、列車検知機能に係る不具合の発生部位を探すときに、前記列車検知信号送信ケーブルに不具合が無いと前記送信側診断部が判定しており且つ前記列車検知信号受信ケーブルに不具合が無いと前記受信側診断部が判定している場合は、前記列車検知信号送信ケーブルの調査と前記列車検知信号受信ケーブルの調査とに先だって前記レール部の調査を行う、ことを特徴とする。 Further, the method for determining a failure site of the present invention (solution 11) is a train detection device for a track circuit equipped with a train detection device with a failure diagnosis function described in any one of the above-mentioned solutions 6 to 10. This is a method for determining the faulty part by using the discrimination result of the above, and when searching for the faulty part related to the train detection function, the transmitting side diagnosis that the train detection signal transmission cable has no defect. If the unit has determined and the receiving side diagnostic unit has determined that there is no problem with the train detection signal receiving cable, the investigation of the train detection signal transmission cable and the investigation of the train detection signal reception cable are performed. It is characterized in that the rail portion is investigated in advance.

このような本発明の故障診断機能付き列車検知装置にあっては(解決手段1)、レール部の両端に分かれて列車検知信号の送信部と受信部とが接続された軌道回路について、送信部は列車検知信号送信ケーブルを介してレール部へ列車検知信号を送出し、受信部は列車検知信号受信ケーブルを介してレール部から列車検知信号を受信し、その列車検知信号の送受信が適切に行われたか否かに応じて列車の在線・非在線を判別する列車検知装置の存在が前提になっており、その列車検知装置における列車検知信号送信ケーブルと列車検知信号受信ケーブルとの何れかに該当する列車検知信号伝送ケーブルに対して、時間領域反射率測定部がパルス信号を送出してその反射信号を測定し、その反射率の時間変化に基づいて診断部が列車検知信号伝送ケーブルに係る不具合の有無および部位を判別する。 In such a train detection device with a failure diagnosis function of the present invention (solution 1), the transmission unit is provided for a track circuit divided into both ends of the rail unit and connected to the transmission unit and the reception unit of the train detection signal. Sends a train detection signal to the rail section via the train detection signal transmission cable, and the receiving section receives the train detection signal from the rail section via the train detection signal reception cable, and the train detection signal is properly transmitted and received. It is premised that there is a train detection device that determines whether a train is on or off depending on whether or not it has been damaged, and it corresponds to either the train detection signal transmission cable or the train detection signal reception cable in the train detection device. The time region reflectance measuring unit sends a pulse signal to the train detection signal transmission cable to measure the reflected signal, and the diagnostic unit has a problem with the train detection signal transmission cable based on the time change of the reflectance. Determine the presence or absence of and the site.

これにより、列車検知信号伝送ケーブルに係る断線等の不具合については不具合の有無ばかりか不具合の発生部位まで把握できることになる。しかも、列車検知信号伝送ケーブルを接続先から取り外すことなく不具合を把握することできる。更に、検測車などの移動機器を用いることなく簡便かつ迅速に不具合の発生位置まで確認することができる。
そのため、多くの場合に、列車検知信号伝送ケーブルのうち不具合発生部分だけ良品と交換して接続し直すといった簡便な修理などで迅速かつ適切に対処できるので、障害復旧作業の負担が軽減される。
したがって、この発明によれば軌道回路を障害から容易に復旧させることができる。
As a result, regarding defects such as disconnection related to the train detection signal transmission cable, it is possible to grasp not only the presence or absence of the defect but also the location where the defect occurs. Moreover, the problem can be grasped without disconnecting the train detection signal transmission cable from the connection destination. Furthermore, it is possible to easily and quickly confirm the position where a defect occurs without using a mobile device such as an inspection vehicle.
Therefore, in many cases, only the defective part of the train detection signal transmission cable can be quickly and appropriately dealt with by replacing it with a non-defective product and reconnecting it, so that the burden of failure recovery work is reduced.
Therefore, according to the present invention, the track circuit can be easily recovered from the failure.

さらに、本発明の故障診断機能付き列車検知装置にあっては(解決手段2,3,4)、列車検知信号の送信が間欠的に行われる軌道回路や、列車検知信号の送信が途絶えた軌道回路について、列車検知信号の無い時間帯にしか時間領域反射率測定用のパルス信号が送出されないようにしたことにより、列車検知信号もパルス信号も邪魔しあうことなく明瞭に伝送されるので、波形の異なる二種類の信号が同じケーブルで伝送されても、不所望な相互作用は生じない。しかも、時間帯の切り分けが、列車検知信号の検出や(解決手段2)、列車検知信号の送信タイミングの通知(解決手段3)、列車検知信号の途絶検出(解決手段4)に基づいて行われるので、簡素な構成の回路等で容易に具現化しうる。
したがって、この発明によれば、列車検知機能を阻害するなく故障診断機能を付加することが簡便にできる。
更に、列車検知信号の途絶検出に基づいて時間領域反射率測定を行う態様では(解決手段4)、送信機の故障といった特定状況下で集中的に故障診断が行われる。
Further, in the train detection device with a failure diagnosis function of the present invention (solutions 2, 3 and 4), a track circuit in which the transmission of the train detection signal is intermittently performed and a track in which the transmission of the train detection signal is interrupted. Regarding the circuit, by making sure that the pulse signal for time region reflectance measurement is sent only during the time when there is no train detection signal, the train detection signal and the pulse signal are clearly transmitted without interfering with each other. Even if two different types of signals are transmitted by the same cable, no undesired interaction occurs. Moreover, the time zone is divided based on the detection of the train detection signal (solution 2), the notification of the transmission timing of the train detection signal (solution 3), and the interruption detection of the train detection signal (solution 4). Therefore, it can be easily embodied by a circuit having a simple structure or the like.
Therefore, according to the present invention, it is possible to easily add a failure diagnosis function without disturbing the train detection function.
Further, in the mode in which the time domain reflectometry is measured based on the interruption detection of the train detection signal (solution 4), the failure diagnosis is intensively performed under a specific situation such as a transmitter failure.

また、本発明の故障診断機能付き列車検知装置にあっては(解決手段5)、時間領域反射率測定用のパルス信号の反射信号を列車検知信号から弁別する信号弁別手段を設けたことにより、列車検知信号の送受信中も含めて随時、時間領域反射率測定を行うことができる。
したがって、この発明によれば、列車検知動作に制約を課すことなく故障診断機能を付加することができる。
Further, in the train detection device with a failure diagnosis function of the present invention (solution 5), a signal discrimination means for discriminating the reflected signal of the pulse signal for time domain reflectometry from the train detection signal is provided. The time domain reflectometry can be measured at any time, including during transmission and reception of train detection signals.
Therefore, according to the present invention, it is possible to add a failure diagnosis function without imposing restrictions on the train detection operation.

また、本発明の故障診断機能付き列車検知装置にあっては(解決手段6)、列車検知信号伝送ケーブルのうち列車検知信号の送信側に当たる列車検知信号送信ケーブルについては、送信側時間領域反射率測定部および送信側診断部によって、不具合の有無が判別され、不具合が有ればその部位まで検出される。また、列車検知信号伝送ケーブルのうち列車検知信号の受信側に当たる列車検知信号受信ケーブルについては、受信側時間領域反射率測定部および受信側診断部によって、不具合の有無が判別され、不具合が有ればその部位まで検出される。 Further, in the train detection device with a failure diagnosis function of the present invention (solution 6), among the train detection signal transmission cables, the train detection signal transmission cable corresponding to the transmission side of the train detection signal has a transmission side time region reflectance. The measuring unit and the transmitting side diagnostic unit determine the presence or absence of a defect, and if there is a defect, the site is detected. In addition, regarding the train detection signal receiving cable that corresponds to the receiving side of the train detection signal among the train detection signal transmission cables, the presence or absence of a defect is determined by the receiving side time domain reflectometry unit and the receiving side diagnostic unit, and there is a defect. If it is detected up to that part.

さらに(解決手段7,8)、送信側と受信側いずれの時間領域反射率測定も、列車検知信号の無い時間帯に限定して行われるので、不具合の有無も部位も的確に検出される。
あるいは(解決手段9)、送信側と受信側いずれの時間領域反射率測定も、パルス信号の反射信号を列車検知信号から弁別することで行われるので、列車検知動作に制約を課すことなく実施することができる。
また(解決手段10)、データ蓄積手段を具備していて時間領域反射率測定部や診断部による測定結果や判別結果を一定周期等で収集・蓄積して時系列データを作成保持することも行うものにあっては、定常的に又は適宜な時期にデータ解析等を行って列車検知信号伝送ケーブルの状態を監視することで、例えば、明白な故障に至るまでに時間を要するような不具合についても、状態基準保全(CBM)による予防保全が可能となる。
Further (solutions 7 and 8), since the time domain reflectometry measurement on both the transmitting side and the receiving side is performed only in the time zone when there is no train detection signal, the presence or absence of a defect and the part can be accurately detected.
Alternatively (Solution 9), the time region reflectance measurement on both the transmitting side and the receiving side is performed by discriminating the reflected signal of the pulse signal from the train detection signal, so that the train detection operation is not restricted. be able to.
Further, (solution 10) is provided with data storage means, and measurement results and discrimination results by the time region reflectance measuring unit and the diagnostic unit are collected and accumulated at regular intervals or the like to create and hold time-series data. In the case of things, by monitoring the status of the train detection signal transmission cable by performing data analysis, etc. on a regular basis or at an appropriate time, for example, even for defects that take time to reach an obvious failure. , Preventive maintenance by condition standard maintenance (CBM) becomes possible.

そのため、列車検知信号送信ケーブルについても列車検知信号受信ケーブルについても不具合が生じると直ちに発生の事実と部位とが判明するので、該当ケーブルの該当箇所を修理する等のことで容易かつ迅速に軌道回路を障害から復旧させることができる。
また、何れの列車検知信号伝送ケーブルについても診断部では不具合が検出されない状況の下で、列車検知機能に不具合が見つかったときには、例えば列車検知装置の上位に位置する列車運行管理システム等によって列車検知装置の検知結果について誤りが検出されたようなときには、レール破断といったレール部の不具合が想定されるため、直ちに検測車等を用いた故障部位の探索に取り掛かることで(即ち解決手段11の故障部位判別方法を実施することで)、容易かつ迅速に軌道回路を障害から復旧させることができる。
Therefore, if a problem occurs with both the train detection signal transmission cable and the train detection signal reception cable, the fact and location of the occurrence will be immediately known. Can be recovered from a failure.
In addition, when a defect is found in the train detection function under the condition that the diagnostic unit does not detect any defect in any train detection signal transmission cable, for example, the train operation management system located above the train detection device detects the train. When an error is detected in the detection result of the device, a malfunction of the rail part such as a broken rail is assumed. Therefore, immediately start searching for a faulty part using an inspection vehicle or the like (that is, a fault of the solution 11). By implementing the site identification method), the track circuit can be easily and quickly recovered from the failure.

本発明の実施例1について、故障診断機能付き列車検知装置の構成を示すブロック図である。It is a block diagram which shows the structure of the train detection apparatus with a failure diagnosis function about Example 1 of this invention. 信号の波形例を示し、(a)が列車検知信号だけのものであり、(b)がそれにパルス信号や反射信号を加えたものである。An example of the waveform of the signal is shown, in which (a) is only a train detection signal, and (b) is a pulse signal or a reflected signal added to the signal. 信号の波形例を示し、(a)がパルス信号と反射信号とを個別に図示したものであり、(b)は、列車検知信号伝送ケーブル等が正常なときのパルス信号と反射信号とを示し、(c)は、列車検知信号伝送ケーブルが途中で破損している異常時のパルス信号と反射信号とを示し、(d)は、パルス信号の幅を広げたときのパルス信号と反射信号とに係り、実線の反射信号が正常時の波形例を示し、破線の反射信号が異常時の波形例を示している。An example of the signal waveform is shown, (a) shows the pulse signal and the reflected signal individually, and (b) shows the pulse signal and the reflected signal when the train detection signal transmission cable or the like is normal. , (C) indicate the pulse signal and the reflected signal at the time of abnormality when the train detection signal transmission cable is damaged in the middle, and (d) shows the pulse signal and the reflected signal when the width of the pulse signal is widened. The solid line reflected signal shows an example of a waveform when it is normal, and the reflected signal of a broken line shows an example of a waveform when it is abnormal.

このような本発明の故障診断機能付き列車検知装置について、これを実施するための具体的な形態を、以下の実施例1により説明する。
図1~3に示した実施例1は、上述した解決手段1,6,7,10(出願当初の請求項1,6,7,10)を具現化したものである。
なお、それらの図示に際しては、簡明化等のため、ブロック図や記号図を用いて、発明の説明に必要なものや関連するものを中心に図示した。
A specific embodiment for carrying out such a train detection device with a failure diagnosis function of the present invention will be described with reference to the following Example 1.
The first embodiment shown in FIGS. 1 to 3 embodies the above-mentioned solutions 1, 6, 7, 10 (claims 1, 6, 7, 10 at the time of filing).
In addition, in order to simplify the illustrations, block diagrams and symbol diagrams are used to mainly illustrate those necessary for explaining the invention and related ones.

本発明の故障診断機能付き列車検知装置の実施例1について、その具体的な構成を、図面を引用して説明する。
図1は、故障診断機能付き列車検知装置10のブロック構成図であり、レール区間2Tに係る部分を示している。
The specific configuration of the first embodiment of the train detection device with a failure diagnosis function of the present invention will be described with reference to the drawings.
FIG. 1 is a block configuration diagram of a train detection device 10 with a failure diagnosis function, and shows a portion related to a rail section 2T.

また、図2は、(a)がレール区間1T~9Tそれぞれにおける列車検知信号の波形を示し、(b)がレール区間2Tにおける列車検知信号Aとパルス信号B,Cと反射信号BR,CRの波形を示している。
さらに、図3は、(a)がパルス信号B,Cとその反射信号BR,CRの波形例を個別に図示したものであり、(b)が列車検知信号伝送ケーブル32,42等が正常なときのパルス信号B,Cと反射信号BR,CRの波形例を示し、(c)が列車検知信号伝送ケーブル32,42が途中で破損している異常時のパルス信号B,Cと反射信号BR,CRの波形例を示している。
なお、図示した波形例は、何れも、要旨を逸脱しない範囲内で簡略化されている。
Further, in FIG. 2, (a) shows the waveform of the train detection signal in each of the rail sections 1T to 9T, and (b) shows the train detection signal A, the pulse signal B, C, and the reflection signal BR, CR in the rail section 2T. The waveform is shown.
Further, in FIG. 3, (a) shows individual waveform examples of the pulse signals B and C and their reflected signals BR and CR, and FIG. 3 (b) shows normal train detection signal transmission cables 32 and 42 and the like. Wave examples of the pulse signals B and C and the reflection signals BR and CR at that time are shown, and (c) shows the pulse signals B and C and the reflection signal BR at the time of abnormality when the train detection signal transmission cables 32 and 42 are damaged in the middle. , CR waveform example is shown.
It should be noted that all of the illustrated waveform examples are simplified within a range that does not deviate from the gist.

故障診断機能付き列車検知装置10は(図1参照)、既成の列車検知装置20+30+40に対して新規な送信側付加部50と受信側付加部60と総合診断部70とを付設するとともに制御部80の機能を向上させたものである。
列車検知装置20+30+40は、レール区間2Tのレール部20と、列車検知信号Aをレール部20に送信する送信部30と、列車検知信号Aをレール部20から受信する受信部40とを具備している。列車5が走行する一連のレール区間1T,2T,3T,…のうち途中のレール区間2Tに付設されたものを図示したが、付設予定品でも良い。
The train detection device 10 with a failure diagnosis function (see FIG. 1) is provided with a new transmission side addition unit 50, a reception side addition unit 60, and a comprehensive diagnosis unit 70 to the existing train detection device 20 + 30 + 40, and a control unit 80. It is an improved function of.
The train detection device 20 + 30 + 40 includes a rail unit 20 of the rail section 2T, a transmission unit 30 that transmits the train detection signal A to the rail unit 20, and a reception unit 40 that receives the train detection signal A from the rail unit 20. There is. Of the series of rail sections 1T, 2T, 3T, ...

レール部20は、並走状態の一対のレール21,22と、そのレール対の一端部に接続されたインピーダンスボンド25(列車検知信号Aは通過させるがパルス信号Bは通過させないで反射するインピーダンス整合部材)と、レール対21,22の他端部に接続されたインピーダンスボンド26(列車検知信号Aは通過させるがパルス信号Cは通過させないで反射するインピーダンス整合部材)とを含んでいる。 The rail portion 20 is an impedance matching that reflects a pair of rails 21 and 22 in a parallel running state and an impedance bond 25 connected to one end of the pair of rails (a train detection signal A is passed but a pulse signal B is not passed). A member) and an impedance bonding 26 (an impedance matching member that allows the train detection signal A to pass but does not allow the pulse signal C to pass) connected to the other ends of the rail pairs 21 and 22).

レール21,22の一端側と隣のレール区間1Tのレール対との間には絶縁部23a,23bが設けられ、レール21,22の他端側と隣のレール区間3Tのレール対との間には絶縁部23c,23dが設けられていて、インピーダンスボンド25に送り込まれた列車検知信号Aがレール対21,22を介してインピーダンスボンド26に伝送されるようになっている。
そのようなレール区間の境界(1Tと2Tとの境23a,23b),(2Tと3Tとの境2ca,23d)の近傍には、信号機24a,24bが設置されることが多い。
Insulating portions 23a and 23b are provided between one end side of the rails 21 and 22 and the rail pair of the adjacent rail section 1T, and between the other end side of the rails 21 and 22 and the rail pair of the adjacent rail section 3T. Is provided with insulating portions 23c and 23d so that the train detection signal A sent to the impedance bond 25 is transmitted to the impedance bond 26 via the rail pairs 21 and 22.
Traffic lights 24a and 24b are often installed in the vicinity of the boundaries of such rail sections (boundaries 23a and 23b between 1T and 2T) and (boundaries 2ca and 23d between 2T and 3T).

送信部30は、列車検知信号Aを送出する送信機31と、一端が送信機31に接続され他端がインピーダンスボンド25に接続されていて列車検知信号Aを送信機31からインピーダンスボンド25へ伝送する列車検知信号送信ケーブル32(列車検知信号伝送ケーブル)とを具備したものである。
列車検知信号Aには、一般に数十Hzから数十kHzの交流信号が多用されており、本例でも、その周波数範囲に属する所定周波数の交流信号が採用されている。
The transmitter 30 transmits the train detection signal A from the transmitter 31 to the impedance bond 25 with the transmitter 31 transmitting the train detection signal A and one end connected to the transmitter 31 and the other end connected to the impedance bond 25. It is provided with a train detection signal transmission cable 32 (train detection signal transmission cable).
Generally, an AC signal of several tens of Hz to several tens of kHz is frequently used as the train detection signal A, and in this example as well, an AC signal having a predetermined frequency belonging to the frequency range is adopted.

受信部40は、列車検知信号Aを受信する受信機41と、一端が受信機41に接続され他端がインピーダンスボンド26に接続されていて列車検知信号Aをインピーダンスボンド26から受信機41へ伝送する列車検知信号受信ケーブル42(列車検知信号伝送ケーブル)とを具備したものである。
バンドパスフィルタを用いた周波数弁別や、制御部80による時間軸上での送受信可否状態の切り替え制御などによって、送信機31からレール部20を経て受信機41に至る列車検知信号Aの送受信が間欠的に行われるようになっている(図2(a)参照)。
The receiver 40 has a receiver 41 for receiving the train detection signal A, one end connected to the receiver 41 and the other end connected to the impedance bond 26, and the train detection signal A is transmitted from the impedance bond 26 to the receiver 41. It is provided with a train detection signal receiving cable 42 (train detection signal transmission cable).
The transmission and reception of the train detection signal A from the transmitter 31 to the receiver 41 via the rail unit 20 is intermittent due to frequency discrimination using a bandpass filter and control by the control unit 80 to switch the transmission / reception enable / disable state on the time axis. (See Fig. 2 (a)).

制御部80は(図1,図2参照)、レール区間2Tに係る送信機31などの動作制御を担うのに加え、他のレール区間1T,3T,…,9T,…の送信機などについても動作制御を行うようになっている。しかも、その動作制御にて、列車検知信号Aに加え他の列車検知信号についても、送受信を時分割で間欠的に行わせるようになっている。
本例では(図2(a)参照)、連続した六つのレール区間1T,…,6Tからなるレール区間群1T…6Tや、それに連なる他のレール区間群7T…毎に、列車検知信号の送信先を時間枠経過毎に一区間ずつずらしながら各レール区間群から一区間だけ順次選出して、それぞれの選出区間へ列車検知信号を送信させるようになっている。
The control unit 80 (see FIGS. 1 and 2) is responsible for controlling the operation of the transmitter 31 and the like related to the rail section 2T, and also for the transmitters and the like of the other rail sections 1T, 3T, ..., 9T, ... It is designed to control the operation. Moreover, the operation control allows transmission and reception of other train detection signals in addition to the train detection signal A to be performed intermittently in a time-division manner.
In this example (see FIG. 2A), a train detection signal is transmitted for each rail section group 1T ... 6T consisting of six consecutive rail sections 1T, ..., 6T, and other rail section groups 7T ... The train detection signal is transmitted to each selected section by sequentially selecting only one section from each rail section group while shifting the destination by one section each time the time frame elapses.

送信側付加部50は(図1参照)、列車検知信号送信ケーブル32のうち送信機31に近い部位に接続された短めのケーブルと、このケーブルに介挿された切替スイッチ51と、そのケーブル及び切替スイッチ51を介して列車検知信号送信ケーブル32へパルス信号Bを送出するとともにその反射信号BRを受信して測定する列車検知信号送信側の時間領域反射率測定部52と(図2(b),図3(a)参照)、その測定結果に基づいて具体的には反射信号BRに係る反射タイミングの早遅に基づいて列車検知信号送信ケーブル32に係る不具合の有無および部位を判別する(図3(b),(c)参照)とともに判別結果BAを総合診断部70に通知する送信側診断部53とを具備したものである。 The transmission side addition unit 50 (see FIG. 1) includes a short cable connected to a portion of the train detection signal transmission cable 32 near the transmitter 31, a changeover switch 51 inserted in this cable, the cable, and the cable. The time region reflectance measuring unit 52 on the train detection signal transmitting side, which transmits the pulse signal B to the train detection signal transmission cable 32 via the changeover switch 51 and receives and measures the reflected signal BR, and (FIG. 2B). , Fig. 3 (a)), and specifically, based on the measurement result, the presence / absence and the portion of the defect related to the train detection signal transmission cable 32 are determined based on the early / late reflection timing of the reflected signal BR (FIG. 3). 3 (b) and (c)) and a transmitting side diagnostic unit 53 for notifying the comprehensive diagnosis unit 70 of the determination result BA.

受信側付加部60は(図1参照)、列車検知信号受信ケーブル42のうち受信機41に近い部位に接続された短めのケーブルと、このケーブルに介挿された切替スイッチ61と、そのケーブル及び切替スイッチ61を介して列車検知信号受信ケーブル42へパルス信号Cを送出するとともにその反射信号CRを受信して測定する列車検知信号受信側の時間領域反射率測定部62と(図2(b),図3(a)参照)、その測定結果に基づいて具体的には反射信号CRに係る反射タイミングの早遅に基づいて列車検知信号受信ケーブル42に係る不具合の有無および部位を判別する(図3(b),(c)参照)とともに判別結果CAを総合診断部70に通知する受信側診断部63とを具備したものである。 The receiving side addition unit 60 (see FIG. 1) includes a short cable connected to a portion of the train detection signal receiving cable 42 close to the receiver 41, a changeover switch 61 inserted in this cable, the cable, and the cable. The time region reflectance measuring unit 62 on the train detection signal receiving side, which transmits the pulse signal C to the train detection signal receiving cable 42 via the changeover switch 61 and receives and measures the reflected signal CR, and (FIG. 2B). , Fig. 3 (a)), and specifically, based on the measurement result, the presence / absence and the portion of the defect related to the train detection signal receiving cable 42 are determined based on the early / late reflection timing related to the reflected signal CR (FIG. 3 (a)). 3 (b), (c)) and the receiving side diagnosis unit 63 for notifying the determination result CA to the comprehensive diagnosis unit 70.

パルス信号Bもパルス信号Cもパルス幅が例えば数ns程度の短いものであり、それに対応した反射信号BR,CRも、波形が崩れて少し幅が広がることが多いが、やはりパルス状のものになる。
そして、パルス信号Bの送出時刻t1から反射信号BRの受信時刻t2までの経過時間(t2-t1)が列車検知信号送信ケーブル32の全長に係る伝搬遅延時間に対応していれば(図3(b)参照)、列車検知信号送信ケーブル32が正常であることを示す判別結果BAを送信側診断部53が出し、パルス信号Cの送出時刻t1から反射信号CRの受信時刻t2までの経過時間(t2-t1)が列車検知信号送信ケーブル42の全長に係る伝搬遅延時間に対応していれば(図3(b)参照)、列車検知信号送信ケーブル42が正常であることを示す判別結果CAを受信側診断部63が出すようになっている。
Both the pulse signal B and the pulse signal C have a short pulse width of, for example, several ns, and the corresponding reflected signals BR and CR often have a broken waveform and a slightly wider width, but they are also pulse-shaped. Become.
Then, if the elapsed time (t2-t1) from the transmission time t1 of the pulse signal B to the reception time t2 of the reflection signal BR corresponds to the propagation delay time related to the entire length of the train detection signal transmission cable 32 (FIG. 3 (FIG. 3). b)), the transmission side diagnostic unit 53 issues a determination result BA indicating that the train detection signal transmission cable 32 is normal, and the elapsed time from the transmission time t1 of the pulse signal C to the reception time t2 of the reflection signal CR (see b)). If t2-t1) corresponds to the propagation delay time related to the total length of the train detection signal transmission cable 42 (see FIG. 3B), the determination result CA indicating that the train detection signal transmission cable 42 is normal is obtained. The receiving side diagnostic unit 63 is designed to output.

これに対し、パルス信号Bの送出時刻t1から反射信号BRの受信時刻t3までの経過時間(t3-t1)が上述の正常時の経過時間(t2-t1)より短いときには(図3(c)参照)、列車検知信号送信ケーブル32に破断等の不具合が発生しており、その不具合の発生位置がケーブル32を経過時間の比{(t3-t1)/(t2-t1)}で分けた部位であることを示す判別結果BAを、送信側診断部53が出すようになっている。
また、パルス信号Cの送出時刻t1から反射信号CRの受信時刻t3までの経過時間(t3-t1)が上述の正常時の経過時間(t2-t1)より短いときには(図3(c)参照)、列車検知信号受信ケーブル42に破断等の不具合が発生しており、その不具合の発生位置がケーブル42を経過時間の比{(t3-t1)/(t2-t1)}で分けた部位であることを示す判別結果CAを、受信側診断部63が出すようになっている。
On the other hand, when the elapsed time (t3-t1) from the transmission time t1 of the pulse signal B to the reception time t3 of the reflection signal BR is shorter than the above-mentioned normal elapsed time (t2-t1) (FIG. 3 (c)). (See), the train detection signal transmission cable 32 has a problem such as breakage, and the position where the problem occurs is the part where the cable 32 is divided by the ratio of elapsed time {(t3-t1) / (t2-t1)}. The transmitting side diagnostic unit 53 outputs the determination result BA indicating that the above is the case.
Further, when the elapsed time (t3-t1) from the transmission time t1 of the pulse signal C to the reception time t3 of the reflection signal CR is shorter than the above-mentioned normal elapsed time (t2-t1) (see FIG. 3C). , The train detection signal receiving cable 42 has a problem such as breakage, and the position where the problem occurs is the part where the cable 42 is divided by the ratio of elapsed time {(t3-t1) / (t2-t1)}. The receiving side diagnostic unit 63 outputs the determination result CA indicating that.

総合診断部70は(図1参照)、送信側付加部50から判別結果BAを受け取るとともに、受信側付加部60から判別結果CAを受け取って、判別結果BA,CAのうち何れかの一方が又は双方が不具合状態を示していれば、レール区間2Tの軌道回路が故障していると判定し、その旨を赤ランプ点灯等にて管理者に知らせるとともに電文送出等にて上位装置に通知するようになっている。これに対し、判別結果BA,CAが共に正常状態を示していれば、電文送出等は行わずに緑ランプ点灯等を継続するようになっている。 The comprehensive diagnosis unit 70 (see FIG. 1) receives the discrimination result BA from the transmitting side addition unit 50 and the discrimination result CA from the receiving side addition unit 60, and either one of the discrimination result BA and the CA is or If both indicate a malfunction state, it is determined that the track circuit of the rail section 2T is out of order, and the administrator is notified by lighting a red lamp or the like and the host device is notified by sending a message or the like. It has become. On the other hand, if the discrimination result BA and CA both indicate a normal state, the green lamp is continuously lit without sending a telegram.

制御部80は(図1参照)、上述のように列車検知信号Aの送受信を時分割で間欠的に行わせる制御を行うのに加え、切替スイッチ51,61や時間領域反射率測定部52,62の動作を制御するときに、いずれの測定部52,62にも、列車検知信号Aの無い時間帯にパルス送出と反射波測定とを行わせるようになっている。そのため(図2(b)参照)、送信側付加部50によるパルス信号Bの送信と反射信号BRの受信が列車検知信号Aの合間を縫って行われるとともに、受信側付加部60によるパルス信号Cの送信と反射信号CRの受信も列車検知信号Aの合間を縫って行われる。 The control unit 80 (see FIG. 1) controls the transmission / reception of the train detection signal A intermittently in a time-division manner as described above, and also controls the changeover switches 51 and 61 and the time domain reflectometry unit 52. When controlling the operation of 62, any of the measuring units 52 and 62 is configured to perform pulse transmission and reflected wave measurement in a time zone when there is no train detection signal A. Therefore (see FIG. 2B), the transmission side addition unit 50 transmits the pulse signal B and the reflection signal BR is received between the train detection signals A, and the reception side addition unit 60 performs the pulse signal C. And the reception of the reflected signal CR are also performed by sewing between the train detection signals A.

この実施例1の故障診断機能付き列車検知装置10について、その使用態様及び動作を、上述した図面を引用して説明する。 The usage mode and operation of the train detection device 10 with a failure diagnosis function of the first embodiment will be described with reference to the above-mentioned drawings.

上述したようにレール区間2Tの軌道回路は(図1参照)、基本構成の列車検知装置に該当する構成部分20~40に対して故障診断機能部50~80が付加されたことで、故障診断機能付き列車検知装置10になっている。
そのため(図2(a)における2Tの波形を参照)、基本の列車検知装置20~40に該当する部分によって一連の列車検知信号送信ケーブル32とレール部20と列車検知信号受信ケーブル42とに係る列車検知信号Aの送受信が所定周期で間欠的に行われる。
As described above, the track circuit of the rail section 2T (see FIG. 1) has a failure diagnosis function unit 50 to 80 added to the component parts 20 to 40 corresponding to the train detection device of the basic configuration. It is a train detection device 10 with a function.
Therefore (see the waveform of 2T in FIG. 2A), the train detection signal transmission cable 32, the rail portion 20, and the train detection signal reception cable 42 relate to a series of train detection signal transmission cables 32 depending on the portions corresponding to the basic train detection devices 20 to 40. The train detection signal A is transmitted and received intermittently at predetermined intervals.

しかも(図2(b)参照)、その繰り返しにおいて前後になる二つの列車検知信号A,Aの合間毎に、送信側付加部50によってパルス信号Bの送信とその反射信号BRの受信と列車検知信号送信ケーブル32の診断とが行われるとともに、受信側付加部60によってパルス信号Cの送信とその反射信号CRの受信と列車検知信号受信ケーブル42の診断とが行われる。 Moreover (see FIG. 2B), the transmission side addition unit 50 transmits the pulse signal B, receives the reflected signal BR, and detects the train at intervals between the two train detection signals A and A that are before and after the repetition. The signal transmission cable 32 is diagnosed, and the receiving side addition unit 60 transmits the pulse signal C, receives the reflected signal CR, and diagnoses the train detection signal receiving cable 42.

そして(図3(b)参照)、列車検知信号送信ケーブル32に不具合が無ければ、時間領域反射率測定部52から切替スイッチ51を介して列車検知信号送信ケーブル32へ時刻t1に送出されたパルス信号Bの反射信号BRが時刻t2に測定される。
これに対し(図3(c)参照)、列車検知信号送信ケーブル32に破断等の不具合が有れば、反射信号BRが時刻t2より早い時刻t3に測定される。
更に(図1参照)、そのような測定結果に基づいて送信側診断部53から判別結果BAが出され、その判別結果BAが総合診断部70に伝達される。
Then (see FIG. 3B), if there is no problem with the train detection signal transmission cable 32, the pulse transmitted from the time domain reflectometry unit 52 to the train detection signal transmission cable 32 via the changeover switch 51 at time t1. The reflected signal BR of the signal B is measured at time t2.
On the other hand (see FIG. 3C), if the train detection signal transmission cable 32 has a defect such as breakage, the reflected signal BR is measured at a time t3 earlier than the time t2.
Further (see FIG. 1), a discrimination result BA is output from the transmitting side diagnosis unit 53 based on such a measurement result, and the discrimination result BA is transmitted to the comprehensive diagnosis unit 70.

また(図3(b)参照)、列車検知信号受信ケーブル42に不具合が無ければ、時間領域反射率測定部62から切替スイッチ61を介して列車検知信号受信ケーブル42へ時刻t1に送出されたパルス信号Cの反射信号CRが時刻t2に測定される。
これに対し(図3(c)参照)、列車検知信号受信ケーブル42に破断等の不具合が有れば、反射信号CRが時刻t2より早い時刻t3に測定される。
更に(図1参照)、そのような測定結果に基づいて受信側診断部63から判別結果CAが出され、その判別結果CAが総合診断部70に伝達される。
Further (see FIG. 3B), if there is no problem with the train detection signal receiving cable 42, the pulse transmitted from the time domain reflectometry unit 62 to the train detection signal receiving cable 42 via the changeover switch 61 at time t1. The reflected signal CR of the signal C is measured at time t2.
On the other hand (see FIG. 3C), if the train detection signal receiving cable 42 has a defect such as a break, the reflected signal CR is measured at a time t3 earlier than the time t2.
Further (see FIG. 1), a discrimination result CA is output from the receiving side diagnosis unit 63 based on such a measurement result, and the discrimination result CA is transmitted to the comprehensive diagnosis unit 70.

こうして、列車検知信号送信ケーブル32に係る不具合の有無および部位に係る判別結果BAと、列車検知信号受信ケーブル42に係る不具合の有無および部位に係る判別結果CAとが、随時、総合診断部70に集められる。
そのため、軌道回路の管理者等は、ランプの点灯状態を目視確認する等のことで容易に、列車検知信号伝送ケーブル32,42に係る不具合の有無を確認することができる。さらに、不具合の発生時には、判別結果BA,CAのデータを確認することで速やかに不具合の発生部位を高い確度で把握するが出来、直ちに修理等に取り掛かることもできる。
In this way, the presence / absence of a defect related to the train detection signal transmission cable 32 and the discrimination result BA related to the part, and the presence / absence of the defect related to the train detection signal receiving cable 42 and the determination result CA related to the part are sent to the comprehensive diagnosis unit 70 at any time. Collected.
Therefore, the manager of the track circuit or the like can easily confirm the presence or absence of a defect related to the train detection signal transmission cables 32 and 42 by visually confirming the lighting state of the lamp. Further, when a defect occurs, the location where the defect has occurred can be quickly grasped with high accuracy by checking the data of the discrimination results BA and CA, and repair or the like can be started immediately.

レール部20にレール破断等の不具合が発生したときには、レール区間2Tに列車5が進入していなくても、基本構成部分20~40の列車検知機能によってレール区間2Tに列車5が在線していると判定されるが、他の手段たとえばCTC(列車集中制御装置)やPRC(自動進路制御装置)といった上位の管理装置あるいは/更には信号係や指令といった人的な列車運行管理手段によってレール区間2Tは列車非在線の状態であると判定され、両者の判定が矛盾するため、列車検知信号Aの伝送経路の調査が必要になる。 When a problem such as a rail break occurs in the rail section 20, even if the train 5 does not enter the rail section 2T, the train 5 is present in the rail section 2T by the train detection function of the basic components 20 to 40. However, the rail section 2T is determined by other means such as a higher-level management device such as CTC (Centralized Traffic Control Device) or PRC (Automatic Traffic Control Device), or by a human train operation management means such as a signal clerk or a commander. Is determined to be in a state where the train is absent, and the determinations of the two are inconsistent. Therefore, it is necessary to investigate the transmission path of the train detection signal A.

具体的には、送信機31と列車検知信号送信ケーブル32とインピーダンスボンド25とレール部20のレール21,22とインピーダンスボンド26と列車検知信号受信ケーブル42と受信機41とに亘って、不具合発生箇所を探索しなければならない。
そのうち送信機31とインピーダンスボンド25,26と受信機41は、局所に設置されているので、動き回らなくても不具合の有無を調べることができ、それで足りる。
これに対し、列車検知信号送信ケーブル32とレール部20と列車検知信号受信ケーブル42とについては、長物なので、不具合の有無調査にとどまらず不具合発生部位まで探索することが求められる。
Specifically, a problem occurs in the transmitter 31, the train detection signal transmission cable 32, the impedance bond 25, the rails 21 and 22 of the rail portion 20, the impedance bond 26, the train detection signal reception cable 42, and the receiver 41. You have to search for a place.
Of these, the transmitter 31, impedance bonds 25, 26, and receiver 41 are locally installed, so it is possible to check for defects without moving around, which is sufficient.
On the other hand, since the train detection signal transmission cable 32, the rail portion 20, and the train detection signal reception cable 42 are long, it is required not only to investigate the presence or absence of defects but also to search for the defect occurrence portion.

もっとも、それらの長物のうち列車検知信号送信ケーブル32と列車検知信号受信ケーブル42とについては、送信側付加部50と受信側付加部60とによって、上述したように不具合が有ればその有無に加えて発生部位まで自動検出されるので、故障診断機能付き列車検知装置10を設置したレール区間2Tに係る不具合調査では、列車検知信号送信ケーブル32の不具合が送信側付加部50によって検出されたときや、列車検知信号受信ケーブル42の不具合が受信側付加部60によって検出されたときには、それらの検出部位を率先して調べることにより、修理等を速やかに行うことができる。 However, among those long objects, the train detection signal transmission cable 32 and the train detection signal reception cable 42 are determined by the transmission side addition unit 50 and the reception side addition unit 60 if there is a problem as described above. In addition, since the occurrence site is automatically detected, when a defect in the train detection signal transmission cable 32 is detected by the transmission side addition unit 50 in the defect investigation related to the rail section 2T in which the train detection device 10 with a failure diagnosis function is installed. Further, when a defect of the train detection signal receiving cable 42 is detected by the receiving side addition unit 60, repair or the like can be promptly performed by proactively investigating those detected parts.

また、送信側付加部50の判別結果BAが列車検知信号送信ケーブル32に不具合の無いことを示すとともに、受信側付加部60の判別結果CAも列車検知信号受信ケーブル42に不具合の無いことを示しているときには、長物のうちではレール部20にレール破断などの不具合が発生している可能性が高いので、列車検知信号送信ケーブル32の調査や列車検知信号受信ケーブル42の調査よりも先に、レール部20に対して調査を行う。
レール部20に係る不具合調査は、既述したように人力走行式の軌道回路電流測定装置や自走式の検測車などを使用して行うことができる。
Further, the discrimination result BA of the transmission side addition unit 50 indicates that there is no problem with the train detection signal transmission cable 32, and the discrimination result CA of the reception side addition unit 60 also indicates that there is no problem with the train detection signal reception cable 42. At this time, there is a high possibility that the rail portion 20 has a problem such as a broken rail among the long objects. Therefore, before investigating the train detection signal transmission cable 32 or the train detection signal reception cable 42, A survey is conducted on the rail portion 20.
As described above, the defect investigation related to the rail portion 20 can be performed by using a human-powered track circuit current measuring device, a self-propelled inspection vehicle, or the like.

[他の実施形態]
上記実施例では、送信機31が列車検知信号Aの送出を間欠的に行うとともに時間領域反射率測定部52,62がパルス信号B,Cの送出と反射信号BR,CRの受信とを列車検知信号Aの送出の無い時間帯に限定するというタイミング調整が、送信機31に加えて時間領域反射率測定部52,62も制御部71が制御することによって具現化されていたが、上記タイミング調整の具体化はそれに限定される訳でない。
[Other embodiments]
In the above embodiment, the transmitter 31 intermittently transmits the train detection signal A, and the time domain reflectometry measurement units 52 and 62 detect the transmission of the pulse signals B and C and the reception of the reflection signals BR and CR. The timing adjustment of limiting to the time zone in which the signal A is not transmitted was embodied by the control unit 71 controlling the time domain reflectometry units 52 and 62 in addition to the transmitter 31, but the above timing adjustment was realized. The materialization of is not limited to that.

例えば、時間領域反射率測定部52,62が列車検知信号Aを検出して該信号Aの無い時間帯を把握することでタイミング調整が行われるようにしても良い(解決手段2,7)。
或いは、列車検知信号Aの送信タイミングが送信機31から時間領域反射率測定部52,62へ通知され、その通知に応じて時間領域反射率測定部52,62がパルス信号B,Cの送出等を行うことで、タイミングが調整されるようにしても良い(解決手段3,7)。
For example, the time domain reflectometry measuring units 52 and 62 may detect the train detection signal A and grasp the time zone in which the signal A does not exist so that the timing adjustment can be performed (solutions 2 and 7).
Alternatively, the transmission timing of the train detection signal A is notified from the transmitter 31 to the time domain reflectometry units 52 and 62, and the time domain reflectometry measurement units 52 and 62 transmit the pulse signals B and C in response to the notification. The timing may be adjusted by performing the above (solutions 3 and 7).

或いは、列車検知信号Aが途絶えたことを検出する列車検知信号途絶検出手段を設けて(図示せず)、その検出に応じて時間領域反射率測定部52,62がパルス信号B,Cの送出等を行うことで、タイミングが調整されるようにしても良い(解決手段4,8)。
或いは、列車検知信号Aから反射信号BR,CRを弁別する信号弁別手段を設けて(図示せず)、その弁別にて得られた信号を用いて時間領域反射率測定部52,62が反射信号BR,CRの測定を行うようにしても良い(解決手段5,9)。
Alternatively, a train detection signal interruption detection means for detecting the interruption of the train detection signal A is provided (not shown), and the time domain reflectometry measurement units 52 and 62 transmit pulse signals B and C in response to the detection. The timing may be adjusted by performing the above (solutions 4 and 8).
Alternatively, a signal discrimination means for discriminating the reflected signals BR and CR from the train detection signal A is provided (not shown), and the time domain reflectometry measuring units 52 and 62 use the signals obtained by the discrimination as the reflected signals. BR and CR may be measured (solutions 5 and 9).

上記実施例では、送信側付加部50も受信側付加部60も総合診断部70も、測定結果や診断結果をデータ蓄積するようになっていなかったが、後の詳細な解析と確実性の高い判定などのために、データ蓄積を行うようにしても良い。
例えば、時間領域反射率測定部52,56による測定結果と診断部53,63による判別結果BA,CAとを含む情報を収集して時系列データに蓄積するデータ蓄積手段を設けて(図示せず)、その時系列データを解析する等のことにより列車検知信号伝送ケーブル32,42の状態を監視するようにしても良い(解決手段10)。
In the above embodiment, neither the transmitting side addition unit 50 nor the receiving side addition unit 60 nor the comprehensive diagnosis unit 70 is designed to accumulate data of measurement results and diagnosis results, but detailed analysis and certainty will be made later. Data may be accumulated for determination or the like.
For example, a data storage means for collecting information including the measurement results by the time region reflectance measuring units 52 and 56 and the discrimination results BA and CA by the diagnostic units 53 and 63 and storing them in the time series data is provided (not shown). ), The state of the train detection signal transmission cables 32 and 42 may be monitored by analyzing the time-series data (solution 10).

[その他]
上記実施例では、レール部20の端部と列車検知信号送信ケーブル32,42の端部とに介在するインピーダンス整合部材として、インピーダンスボンド25,26を挙げたが、インピーダンス整合部材は、インピーダンスボンドに限定される訳でなく、列車検知信号Aは通過させるがパルス信号B,Cは通過させないで反射するものであれば良く、例えばマッチングトランスでも良い。
[others]
In the above embodiment, the impedance matching members 25 and 26 are mentioned as the impedance matching members interposed between the end of the rail portion 20 and the ends of the train detection signal transmission cables 32 and 42, but the impedance matching member is an impedance bond. The train detection signal A is not limited, and the pulse signals B and C may be reflected without passing through, and may be a matching transformer, for example.

上記実施例では、送信側付加部50や受信側付加部60が検出する不具合としてケーブル破断を挙げたが、反射信号BR,CRの波形解析も行うことで、短絡等の不具合状態を把握することも可能であり、不具合の程度まで把握することもできる。
上記実施例では、パルス信号B,Cの送出タイミングが同時刻t1になっていたが、列車検知信号Aの伝送タイミングと重ならなければ、同時でなく、ずれていても、良い。
上記実施例では、パルス信号B,Cのパルス幅が小さめであったが、例えば始端の検出などでパルス伝搬時間が測定できれば足りるので、パルス信号B,Cのパルス幅は大きめであっても良い(図3(d)参照)。
In the above embodiment, the cable breakage is mentioned as a defect detected by the transmitting side addition unit 50 and the receiving side addition unit 60, but the trouble state such as a short circuit can be grasped by also performing waveform analysis of the reflected signals BR and CR. It is also possible, and it is possible to grasp the degree of failure.
In the above embodiment, the transmission timings of the pulse signals B and C are at the same time t1, but if they do not overlap with the transmission timing of the train detection signal A, they may not be at the same time but may be offset.
In the above embodiment, the pulse widths of the pulse signals B and C are small, but since it is sufficient if the pulse propagation time can be measured by detecting the start end, for example, the pulse widths of the pulse signals B and C may be large. (See FIG. 3 (d)).

上記実施例では、パルス信号B,Cの変形について言及しなかったが、送信側付加部50や受信側付加部60に対してパルス調整手段を付加する等のことにより、パルス信号B,Cのパルス幅や振幅レベルを変更しうるようにしても良い。
パルス調整手段を手動操作等にて作動させることで簡便に、パルス信号B,Cに係るパルス幅や振幅レベルを列車検知信号伝送ケーブル32,42の測定対象部分の長さに適合させるといったことができる。
In the above embodiment, the deformation of the pulse signals B and C is not mentioned, but the pulse signals B and C can be obtained by adding pulse adjusting means to the transmitting side addition unit 50 and the receiving side addition unit 60. The pulse width and the amplitude level may be changed.
By operating the pulse adjusting means manually or the like, it is possible to easily adjust the pulse width and amplitude level of the pulse signals B and C to the length of the measurement target portion of the train detection signal transmission cables 32 and 42. can.

1T,2T,3T…レール区間、5…列車、
10…故障診断機能付き列車検知装置、
20…レール部(軌道回路の央部)、
21,22…レール、23a,23b,23c,23d…絶縁部、
24a,24b…信号機、
25,26…インピーダンスボンド(インピーダンス整合部材)、
30…送信部(軌道回路の一端部)、
31…送信機、32…列車検知信号送信ケーブル(列車検知信号伝送ケーブル)、
40…受信部(軌道回路の他端部)、
41…受信機、42…列車検知信号受信ケーブル(列車検知信号伝送ケーブル)、
50…送信側付加部、
51…切替スイッチ、52…時間領域反射率測定部、53…送信側診断部、
60…受信側付加部、
61…切替スイッチ、62…時間領域反射率測定部、63…受信側診断部、
70…総合診断部、80…制御部、
A…列車検知信号、B,C…パルス信号、BR,CR…反射信号
1T, 2T, 3T ... rail section, 5 ... train,
10 ... Train detection device with failure diagnosis function,
20 ... Rail part (central part of track circuit),
21,22 ... Rail, 23a, 23b, 23c, 23d ... Insulation part,
24a, 24b ... Traffic light,
25, 26 ... Impedance bond (impedance matching member),
30 ... Transmitter (one end of track circuit),
31 ... Transmitter, 32 ... Train detection signal transmission cable (train detection signal transmission cable),
40 ... Receiver (the other end of the track circuit),
41 ... Receiver, 42 ... Train detection signal reception cable (train detection signal transmission cable),
50 ... Transmitter side addition,
51 ... Changeover switch, 52 ... Time domain reflectometry unit, 53 ... Transmitter diagnostic unit,
60 ... Receiving side addition part,
61 ... Changeover switch, 62 ... Time domain reflectometry unit, 63 ... Receiving side diagnostic unit,
70 ... Comprehensive diagnosis unit, 80 ... Control unit,
A ... Train detection signal, B, C ... Pulse signal, BR, CR ... Reflection signal

Claims (11)

列車検知信号は通過させるがパルス信号は反射するインピーダンス整合部材を介して一端がレール部の一端に接続され他端が列車検知信号の送信機および受信機のうち何れか一方に接続される列車検知信号伝送ケーブルと、該ケーブルに接続されてパルス信号を送出するとともにその反射信号を測定する時間領域反射率測定部と、その測定結果に基づいて前記列車検知信号伝送ケーブルに係る不具合の有無および部位を判別する診断部とを具備していることを特徴とする故障診断機能付き列車検知装置。 Train detection where one end is connected to one end of the rail section and the other end is connected to either the transmitter or receiver of the train detection signal via an impedance matching member that passes the train detection signal but reflects the pulse signal. A signal transmission cable, a time region reflectance measuring unit that is connected to the cable to send a pulse signal and measures the reflected signal, and the presence / absence and location of a defect related to the train detection signal transmission cable based on the measurement result. A train detection device with a failure diagnosis function, which is characterized by having a diagnostic unit for discriminating. 前記列車検知信号の送信が間欠的に行われるようになっており、前記時間領域反射率測定部が前記列車検知信号の検出を行って該信号の無い時間帯に限って前記パルス信号の送出を行うようになっている、ことを特徴とする請求項1記載の故障診断機能付き列車検知装置。 The train detection signal is transmitted intermittently, and the time domain reflectometry unit detects the train detection signal and sends the pulse signal only in a time zone when the signal is absent. The train detection device with a failure diagnosis function according to claim 1, wherein the train is to be performed. 前記送信部が前記列車検知信号の送信を間欠的に行うとともに該送信のタイミングを前記時間領域反射率測定部に通知するようになっており、前記時間領域反射率測定部が前記通知に応じて前記パルス信号の送出とその反射信号の測定とを行うようになっている、ことを特徴とする請求項1記載の故障診断機能付き列車検知装置。 The transmission unit intermittently transmits the train detection signal and notifies the time domain reflectometry measurement unit of the transmission timing, and the time domain reflectometry measurement unit responds to the notification. The train detection device with a failure diagnosis function according to claim 1, wherein the pulse signal is transmitted and the reflected signal is measured. 前記列車検知信号が途絶えたことを検出する列車検知信号途絶検出手段が設けられており、その検出に応じて前記時間領域反射率測定部が前記パルス信号の送出とその反射信号の測定とを行うようになっている、ことを特徴とする請求項1記載の故障診断機能付き列車検知装置。 A train detection signal interruption detection means for detecting the interruption of the train detection signal is provided, and the time domain reflectometry measuring unit transmits the pulse signal and measures the reflected signal in response to the detection. The train detection device with a failure diagnosis function according to claim 1, wherein the train detection device is characterized in that. 前記列車検知信号から前記反射信号を弁別する信号弁別手段が設けられており、その弁別にて得られた信号を用いて前記時間領域反射率測定部が反射信号測定を行うようになっている、ことを特徴とする請求項1記載の故障診断機能付き列車検知装置。 A signal discrimination means for discriminating the reflected signal from the train detection signal is provided, and the time domain reflectometry measuring unit measures the reflected signal using the signal obtained by the discrimination. The train detection device with a failure diagnosis function according to claim 1, wherein the train detection device is characterized in that. 列車検知信号は通過させるがパルス信号は反射するインピーダンス整合部材を介して一端がレール部の一端に接続された列車検知信号送信ケーブルを介して列車検知信号を前記レール部に送信する送信部と、前記列車検知信号は通過させるがパルス信号は反射するインピーダンス整合部材を介して前記レール部の他端に接続された列車検知信号受信ケーブルを介して前記列車検知信号を前記レール部から受信する受信部と、前記列車検知信号送信ケーブルに接続されてパルス信号を送出するとともにその反射信号を測定する送信側時間領域反射率測定部と、その測定結果に基づいて前記列車検知信号送信ケーブルに係る不具合の有無および部位を判別する送信側診断部と、前記列車検知信号受信ケーブルに接続されてパルス信号を送出するとともにその反射信号を測定する受信側時間領域反射率測定部と、その測定結果に基づいて前記列車検知信号受信ケーブルに係る不具合の有無および部位を判別する受信側診断部とを備えている故障診断機能付き列車検知装置。 A transmission unit that transmits a train detection signal to the rail unit via a train detection signal transmission cable whose end is connected to one end of the rail unit via an impedance matching member that allows the train detection signal to pass but reflects. A receiving unit that receives the train detection signal from the rail unit via a train detection signal receiving cable connected to the other end of the rail unit via an impedance matching member that allows the train detection signal to pass but reflects the pulse signal. And, a defect related to the transmission side time region reflectance measuring unit which is connected to the train detection signal transmission cable to transmit a pulse signal and measure the reflected signal, and the train detection signal transmission cable based on the measurement result. Based on the transmission side diagnostic unit that determines the presence / absence and the site, the reception side time region reflectance measurement unit that is connected to the train detection signal reception cable to transmit a pulse signal and measure the reflection signal, and the measurement result. A train detection device with a failure diagnosis function, which is provided with a receiving side diagnostic unit for determining the presence / absence and location of a defect related to the train detection signal receiving cable. 前記列車検知信号の送信が間欠的に行われるようになっており、前記送信側時間領域反射率測定部も前記受信側時間領域反射率測定部も前記列車検知信号の無い時間帯にパルス信号送出と反射信号測定とを行うようになっている、ことを特徴とする請求項6記載の故障診断機能付き列車検知装置。 The train detection signal is transmitted intermittently, and both the transmitting side time region reflectance measuring unit and the receiving side time region reflectance measuring unit transmit a pulse signal during a time zone when the train detection signal is absent. The train detection device with a failure diagnosis function according to claim 6, wherein the measurement is performed with the reflected signal. 前記列車検知信号が途絶えたことを検出する列車検知信号途絶検出手段が設けられており、その検出に応じて前記送信側時間領域反射率測定部も前記受信側時間領域反射率測定部も前記列車検知信号の無い時間帯にパルス信号送出と反射信号測定とを行うようになっている、ことを特徴とする請求項6記載の故障診断機能付き列車検知装置。 A train detection signal interruption detection means for detecting the interruption of the train detection signal is provided, and the transmitting side time region reflectance measuring unit and the receiving side time region reflectance measuring unit both respond to the detection of the train. The train detection device with a failure diagnosis function according to claim 6, wherein pulse signal transmission and reflection signal measurement are performed during a time period when there is no detection signal. 前記列車検知信号から前記反射信号を弁別する信号弁別手段が設けられており、その弁別にて得られた信号を用いて前記送信側時間領域反射率測定部も前記受信側時間領域反射率測定部も反射信号測定を行うようになっている、ことを特徴とする請求項6記載の故障診断機能付き列車検知装置。 A signal discrimination means for discriminating the reflected signal from the train detection signal is provided, and the transmitting side time domain reflectometry measuring unit also uses the signal obtained by the discrimination to measure the receiving side time domain reflectometry. The train detection device with a failure diagnosis function according to claim 6, wherein the reflection signal is measured. 前記時間領域反射率測定部による測定結果と前記診断部による判別結果とを含む情報を収集して時系列データに蓄積するデータ蓄積手段を具備している、ことを特徴とする請求項1乃至9のうち何れか一項に記載された故障診断機能付き列車検知装置。 Claims 1 to 9 include a data storage means for collecting information including a measurement result by the time domain reflectance measuring unit and a discrimination result by the diagnostic unit and accumulating the time-series data. The train detection device with a failure diagnosis function described in any one of the items. 請求項6乃至10のうち何れか一項に記載された故障診断機能付き列車検知装置を装備した軌道回路について前記列車検知装置の判別結果を利用して不具合の発生部位を探す故障部位判別方法であって、列車検知機能に係る不具合の発生部位を探すときに、前記列車検知信号送信ケーブルに不具合が無いと前記送信側診断部が判定しており且つ前記列車検知信号受信ケーブルに不具合が無いと前記受信側診断部が判定している場合は、前記列車検知信号送信ケーブルの調査と前記列車検知信号受信ケーブルの調査とに先だって前記レール部の調査を行う、ことを特徴とする故障部位判別方法。 The failure site determination method for searching for a defect occurrence site using the discrimination result of the train detection device for a track circuit equipped with the train detection device with a failure diagnosis function according to any one of claims 6 to 10. Therefore, when searching for a location where a defect related to the train detection function occurs, the transmitting side diagnostic unit determines that there is no defect in the train detection signal transmission cable, and there is no defect in the train detection signal receiving cable. When the receiving side diagnostic unit determines, the failure site determination method is characterized in that the rail unit is investigated prior to the investigation of the train detection signal transmission cable and the investigation of the train detection signal reception cable. ..
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