JPH11278275A - Crossing controller - Google Patents
Crossing controllerInfo
- Publication number
- JPH11278275A JPH11278275A JP8608998A JP8608998A JPH11278275A JP H11278275 A JPH11278275 A JP H11278275A JP 8608998 A JP8608998 A JP 8608998A JP 8608998 A JP8608998 A JP 8608998A JP H11278275 A JPH11278275 A JP H11278275A
- Authority
- JP
- Japan
- Prior art keywords
- train
- starting point
- alarm
- passed
- railroad crossing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Train Traffic Observation, Control, And Security (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、踏切制御装置に係
り、特に、車軸検知器を利用して踏切警報機を制御でき
るようにしたものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a railroad crossing control device and, more particularly, to a railroad crossing alarm device that can be controlled using an axle detector.
【0002】[0002]
【従来の技術】従来、この種の踏切制御装置は、図4に
示されるように、線路rを横断する踏切イを中心にして
所定距離離れた一方の側に順方向(以下、「上り」とい
うときもある)始動点P1 が設けられ、他方の側に逆方
向(以下、「下り」というときもある)始動点P2 が設
けられ、これら両始動点には、軌道回路を利用した閉電
路形制御子からなる列車位置検知装置20a,20bが
それぞれ設けられている。また、踏切イの近傍には、終
止点P0 が設けられているとともに、その終止点P0 に
は、軌道回路を利用した開電路形制御子からなる列車位
置検知装置が設けられている。2. Description of the Related Art Conventionally, as shown in FIG. 4, this type of railroad crossing control device is, as shown in FIG. A starting point P1 is provided, and a starting point P2 in the opposite direction (hereinafter sometimes referred to as "down") is provided on the other side, and a closed circuit using a track circuit is provided at both starting points. Train position detecting devices 20a and 20b each comprising a shape controller are provided. An end point P0 is provided near the railroad crossing A, and at the end point P0, a train position detecting device comprising an open circuit controller using a track circuit is provided.
【0003】図4の路線図において、列車Aが上り方向
に走行していて、列車Aが列車位置検知装置20aで検
知されると、踏切イに設置されている踏切警報機(本発
明で「踏切警報機」というときは踏切遮断機も含んでい
る。以下、単に「警報機」という)ロの鳴動(踏切遮断
機の場合は遮断杆の降下)が開始される。In the route map of FIG. 4, when the train A is traveling in the upward direction, and the train A is detected by the train position detecting device 20a, a level crossing alarm (hereinafter referred to as "the crossing alarm") installed at the level crossing A is provided. The term “level crossing alarm” also includes a level crossing barrier. Hereinafter, the buzzer (hereinafter simply referred to as “alarm”) will start to sound (in the case of a level crossing barrier, the blocking rod will descend).
【0004】なお、警報機ロの鳴動は、列車位置検知装
置20aで列車位置が検知されてから列車の種別や列車
速度に合わせて、すなわち、緩急列車の相違等により所
定の遅延時間経過後に開始して、警報機ロの鳴動時間を
所定の一定に保つように工夫されているが、ここでは、
説明を簡単にするため、列車位置検知装置20aで列車
位置が検知されたときに鳴動を開始するものとして説明
する。[0004] The sounding of the alarm b starts in accordance with the type and speed of the train after the train position is detected by the train position detecting device 20a, that is, after a predetermined delay time elapses due to a difference between slow and fast trains. Then, it is devised to keep the ringing time of the alarm b at a predetermined constant, but here,
For the sake of simplicity, the description will be made on the assumption that the sound starts when the train position is detected by the train position detecting device 20a.
【0005】鳴動を開始した警報機ロは、終止点P0 の
列車位置検知装置21で列車Aが検知されなくなった時
点から所定時間経過後に、いわゆるあおり時間経過後
に、鳴動が停止される。[0005] The alarm that has started sounding is stopped sounding after a lapse of a predetermined time since the train A is no longer detected by the train position detecting device 21 at the end point P0, that is, after a lapse of the so-called tilting time.
【0006】踏切イを通過した列車Aが下り始動点P2
の列車位置検知装置20bを所定の監視時間(T)以内
に通過したとき、その列車は下り列車と判定されて、列
車位置検知装置20bによる警報機ロの鳴動の開始制御
は行われず、いわゆるマスク処理が行われて警報機ロの
鳴動は行われない。[0006] The train A that has passed the railroad crossing A has a descending starting point P2
When the train has passed through the train position detecting device 20b within a predetermined monitoring time (T), the train is determined to be a down train, and the start control of the sounding of the alarm by the train position detecting device 20b is not performed. The processing is performed and the alarm is not sounded.
【0007】また、図4に示されるように、列車位置検
知装置20bが駅近くに設けられているときは、先行列
車の在線等により、列車Aが上述の監視時間(T)を経
過するまでに列車位置検知装置20bによって検知され
ないことがある。このため、警報機ロの鳴動制御を出発
信号機Sの現示信号と連動させて、上述の監視時間
(T)を経過しても列車位置検知装置20bの故障と判
定して、警報機ロを鳴動させないように、いわゆる機外
停車対策が行われている。[0007] As shown in FIG. 4, when the train position detecting device 20b is provided near the station, the train A will not be monitored until the above-mentioned monitoring time (T) elapses due to the presence of a preceding train. May not be detected by the train position detection device 20b. For this reason, the sound control of the alarm device b is linked with the present signal of the departure signal S, and it is determined that the train position detection device 20b has failed even after the above-mentioned monitoring time (T) has elapsed, and the alarm device b A so-called extra-vehicle stop countermeasure is taken to prevent the sound from sounding.
【0008】[0008]
【発明が解決しようとする課題】しかしながら、上記従
来の踏切制御装置は、監視時間を設定したり、あるい
は、機外停車対策により、列車が抜ける方の列車位置検
知装置を制御しなければならず、回路構成が複雑となり
設備コストがかさむ欠点があった。However, the above-mentioned conventional railroad crossing control device has to set a monitoring time or control a train position detecting device from which the train leaves by taking measures to stop outside the vehicle. However, there is a disadvantage that the circuit configuration becomes complicated and the equipment cost increases.
【0009】そこで、本発明は、上記欠点を解決するた
めになされたものであって、その目的は、簡単な構成に
より警報機を制御することのできる踏切制御装置を提供
することにある。The present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to provide a railroad crossing control device capable of controlling an alarm with a simple configuration.
【0010】[0010]
【課題を解決するための手段】本発明に係る踏切制御装
置は、上記目的を達成するために、踏切から所定距離離
れた一方の側に順方向始動点を設けるとともに他方の側
に逆方向始動点を設け、その順方向始動点又はその逆方
向始動点を列車が通過したことにより警報機の鳴動の開
始制御を行い、その踏切の近傍に設けられた終止点を列
車が通過したことによりその警報機の鳴動を停止させる
踏切制御装置において、前記両始動点及び前記終止点に
列車の通過車軸数を検出するとともに、列車の通過方向
を検出する車軸検知器をそれぞれ設け、前記順方向始動
点又は前記逆方向始動点において検出した車軸数と前記
終止点において検出した車軸数とが一致したときに、前
記警報機の鳴動を停止させる停止制御手段を設け、前記
順方向始動点及び前記終止点を通過した列車が前記逆方
向始動点を通過したとき、又は、その逆方向始動点及び
その終止点を通過した列車がその順方向始動点を通過し
たときに、前記警報機の鳴動開始制御を禁止させる禁止
手段を設けた、ことを特徴としている。In order to achieve the above object, a crossing control device according to the present invention is provided with a forward starting point on one side at a predetermined distance from a crossing and a reverse starting point on the other side. The start point of the alarm is controlled when the train passes the forward starting point or the reverse starting point, and when the train passes the end point provided near the railroad crossing, In the railroad crossing control device that stops the sounding of the alarm, the axle detector that detects the number of passing axles of the train at both the starting point and the end point and detects the passing direction of the train is provided, and the forward starting point is provided. Or, when the number of axles detected at the reverse start point matches the number of axles detected at the end point, stop control means for stopping sounding of the alarm is provided, and the forward start point and When a train passing through the end point passes through the backward starting point, or when a train passing through the backward starting point and the end point passes through the forward starting point, the alarm sounds. A prohibition means for prohibiting start control is provided.
【0011】[0011]
【発明の実施の形態】以下、本発明の実施形態について
図面を用いて説明する。図1は、一実施の形態に係る踏
切制御装置の概略構成図であり、上記図4の従来例と同
一構成要素については同一符号を用い、これら同一構成
要素についての説明は省略する。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a railroad crossing control device according to an embodiment. The same reference numerals are used for the same components as those in the conventional example in FIG. 4 described above, and description of these same components is omitted.
【0012】図1中、1a,1b,1cは、上り始動点
P1 ,下り始動点P2 ,終止点P0にそれぞれ設けられ
た第1,第2検知子a1 ,a2 からなる車軸検知器であ
る。In FIG. 1, reference numerals 1a, 1b and 1c denote axle detectors comprising first and second detectors a1 and a2 provided at an up starting point P1, a down starting point P2 and an end point P0, respectively.
【0013】各車軸検知器1a,1b,1cは、同一構
成なので、上り始動点P1 に設けられている車軸検知器
1aを例に図2を用いて説明する。Since each of the axle detectors 1a, 1b, 1c has the same configuration, the axle detector 1a provided at the upward starting point P1 will be described with reference to FIG.
【0014】この車軸検知器1aの第1検知子a1 及び
第2検知子a2 は、列車Aの走行する線路(レール)r
に沿って所定の間隔を保って設けられるとともに、第1
検知子a1 及び第2検知子a2 は、共に、図示しないが
線路rを挾んで設けられた一対の電磁コイルをそれぞれ
有している。したがって、線路rを列車Aが通過する
と、列車Aの鉄製の車軸(車輪)により一対の電磁コイ
ル間の磁束に変化が起こり、この変化を検出することに
より車軸数を検出することができるとともに、検知子
(a1 ,a2 )の検出順序により列車Aの走行方向を検
出することができる。The first detector a1 and the second detector a2 of the axle detector 1a are connected to a track (rail) r on which the train A runs.
Are provided at predetermined intervals along the
Each of the detector a1 and the second detector a2 has a pair of electromagnetic coils (not shown) provided across the line r. Therefore, when the train A passes through the track r, a change occurs in the magnetic flux between the pair of electromagnetic coils due to the iron axle (wheel) of the train A, and by detecting this change, the number of axles can be detected. The traveling direction of the train A can be detected based on the detection order of the detectors (a1, a2).
【0015】車軸検知器1aは、上述のように、第1検
知子a1 と第2検知子a2 とを所定の間隔を保って設け
ているので、一つの車軸(車輪)が検知子a1 ,a2 間
を通過する所要時間により列車速度を検出することがで
きる。したがって、検出された列車速度に基づいて、上
り始動点P1 を通過してから警報機ロの鳴動を開始させ
る時間を調整することもできる。As described above, the axle detector 1a is provided with the first detector a1 and the second detector a2 at a predetermined interval, so that one axle (wheel) is connected to the detectors a1, a2. The train speed can be detected based on the time required to pass between the trains. Therefore, based on the detected train speed, it is also possible to adjust the time at which the alarm b starts to sound after passing the up starting point P1.
【0016】図2(a)は、第1検知子a1 及び第2検
知子a2 の検知出力(1,0)状態を表しているととも
に、同一時間帯における検知出力のモード(m0 ,m1
,m2 ,m3 ,m0 )を表している。また、図2
(b)は、検知出力のモードが列車の上り(順方向)と
下り(逆方向)とで相違し、この相違により列車方向を
検出(判定)できることを示している。FIG. 2A shows the state of the detection output (1, 0) of the first detector a1 and the second detector a2, and the mode (m0, m1) of the detection output in the same time zone.
, M2, m3, m0). FIG.
(B) shows that the mode of the detection output is different between a train going up (forward direction) and a train going down (reverse direction), and the train direction can be detected (determined) by this difference.
【0017】制御器2は、CPUを中心に構成されてい
て、各車軸検知器1a,1b,1cからの車軸数及び列
車方向の情報を入力して演算処理し、警報機ロを駆動制
御するように構成されている。The controller 2 is mainly constituted by a CPU, inputs information on the number of axles and train direction from each of the axle detectors 1a, 1b, 1c, performs arithmetic processing, and drives and controls the alarm device b. It is configured as follows.
【0018】以下、図3のフローチャートを用いて、列
車イが順方向(上り)に走行するときの警報機ロの制御
動作について説明する。Hereinafter, the control operation of the alarm device B when the train A travels in the forward direction (uphill) will be described with reference to the flowchart of FIG.
【0019】今、列車Aが上り始動点P1 にさしかか
り、車軸検知器1aで列車検知が開始されたとする(ス
テップ100肯定。以下、ステップを「S」とす
る。)。車軸検知器1aにより車軸数(N)及び列車方
向(この場合は上り)が検出されると(S102)、警
報機ロの鳴動を開始させるための処理が行われる(S1
04)。車軸検知器1aにより検出された車軸数(N)
及び列車方向は、制御器2の図示しないメモリに記憶さ
れる。Now, it is assumed that the train A is approaching the starting point P1 and the axle detector 1a has started the train detection (Yes at Step 100; hereinafter, the step is referred to as "S"). When the axle detector 1a detects the number of axles (N) and the train direction (upward in this case) (S102), a process for starting sounding of the alarm device B is performed (S1).
04). Number of axles detected by axle detector 1a (N)
The train direction and the train direction are stored in a memory (not shown) of the controller 2.
【0020】列車Aが踏切イにさしかかると、終止点P
0 に設けられている車軸検知器1cにより列車Aの車軸
数(n)が検出されるとともに、列車方向(この場合は
上り)が検出されて、制御器2のメモリに記憶される
(S106肯定、S108)。When the train A approaches the crossing A, the end point P
The number of axles (n) of the train A is detected by the axle detector 1c provided at 0, and the train direction (upward in this case) is detected and stored in the memory of the controller 2 (Yes at S106). , S108).
【0021】制御器2では、終止点P0 の車軸検知器1
cが車軸数を検出する毎に上り始動点P1 の車軸検知器
1aが検出した車軸数(N)から減算処理し、(N−
n)=0になった時点で、すなわち、車軸検知器1aで
検出された車軸数(N)と車軸検知器1cで検出された
車軸数(n)とが一致したときに、列車Aは、踏切イを
通過したと判定される。警報機ロは、この判定により鳴
動が停止される(S110肯定、S112)。In the controller 2, the axle detector 1 at the end point P0
Every time c detects the number of axles, it subtracts from the number of axles (N) detected by the axle detector 1a at the up starting point P1 to obtain (N-
n) = 0, that is, when the number of axles (N) detected by the axle detector 1a and the number of axles (n) detected by the axle detector 1c match, the train A It is determined that the vehicle has passed the railroad crossing A. The sounding of the alarm device B is stopped by this determination (Yes at S110, S112).
【0022】なお、図3のフローチャートでは省略され
ているが、列車Aが踏切イにさしかかるまで、又は、踏
切イを通過中、後続の列車が上り始動点P1 の車軸検知
器1aにより車軸数の検出が開始されているときは、列
車Aが踏切イを通過した後もN−nは0より大となるの
で、この場合は、後続の列車が踏切イを通過してN−n
=0となるまで警報機ロの鳴動は続行される。Although not shown in the flowchart of FIG. 3, the following train is driven by the axle detector 1a at the up starting point P1 until the train A approaches the railroad crossing A or while passing through the railroad crossing A. When the detection is started, N-n becomes larger than 0 even after the train A passes the railroad crossing A, and in this case, the subsequent train passes the railroad crossing A and N-n
The sounding of the alarm B continues until = 0.
【0023】踏切イを通過した列車Aが下り始動点P2
にさしかかると、その下り始動点P2 の車軸検知器1b
により上述の各車軸検知器1a,1cと同様に列車Aの
車軸数の検出と列車方向(この場合は上り)が検出され
る(S114肯定、S116)。The train A that has passed the railroad crossing A has a descending starting point P2
When approaching, the axle detector 1b at the descent starting point P2
Thus, similarly to the axle detectors 1a and 1c described above, the detection of the number of axles of the train A and the train direction (upward in this case) are detected (Yes in S114, S116).
【0024】下り始動点P2 を通過する列車Aは、上り
列車と判定されるので、すなわち、踏切イを抜けた列車
と判定されるので(S118肯定)、制御器2は、車軸
検知器1bが車軸を検出しても警報機ロが鳴動を開始し
ないように制御が行われる(S120)。もちろん、下
り始動点P2 に設けられている車軸検知器1bにより列
車方向が逆方向(下り)と判定されたときは、警報機ロ
の鳴動が開始される(S118否定、S122)。Since the train A passing the starting point P2 is determined to be an ascending train, that is, a train that has passed through a railroad crossing A (Yes at S118), the controller 2 determines whether or not the axle detector 1b has the axle detector 1b. Control is performed so that the alarm device b does not start ringing even if the axle is detected (S120). Of course, when the axle detector 1b provided at the descent start point P2 determines that the train direction is the reverse direction (descent), the alarm b starts to sound (No at S118, S122).
【0025】上記構成の踏切制御装置は、踏切イを通過
した列車Aを監視する監視タイマを必要とせず、また、
機外停車対策も必要としないので、回路構成が簡略化で
き、設備コストを低減させることができる。The railroad crossing control device having the above configuration does not require a monitoring timer for monitoring the train A that has passed the railroad crossing A.
Since there is no need for measures to stop outside the vehicle, the circuit configuration can be simplified, and equipment costs can be reduced.
【0026】なお、上述の例は、列車Aが上り列車の場
合であるが、列車Aが下り列車の場合も、上述と同様
に、上り始動点P1 に設けられている車軸検知器1aに
より列車方向が下りと判定されるので、警報機ロの鳴動
が開始されることがない。Although the above-mentioned example is a case where the train A is an up train, when the train A is a down train, the train is detected by the axle detector 1a provided at the up starting point P1 in the same manner as described above. Since the direction is determined to be down, the alarm device b does not start sounding.
【0027】また、上述の例では、車軸検知器1a,1
b,1cは電磁式としたが、車軸(車輪)を検知できる
ものであれば、光電式等の周知のセンサを用いることも
できる。In the above-described example, the axle detectors 1a, 1
Although b and 1c are of the electromagnetic type, any known sensor such as a photoelectric type can be used as long as it can detect an axle (wheel).
【0028】[0028]
【発明の効果】本発明に係る踏切制御装置は、両始動点
及び終止点に列車の通過車軸数を検出するとともに列車
の通過方向を検出する車軸検知器をそれぞれ設け、前記
順方向始動点又は前記逆方向始動点において検出した車
軸数と前記終止点において検出した車軸数とが一致した
ときに、前記警報機の鳴動を停止させる停止制御手段を
設け、前記順方向始動点及び前記終止点を通過した列車
が前記逆方向始動点を通過したとき、又は、その逆方向
始動点及びその終止点を通過した列車がその順方向始動
点を通過したときに、前記警報機の鳴動開始制御を禁止
させる禁止手段を設けたので、踏切を通過した列車を監
視する監視タイマを必要とせず、また、機外停車対策も
必要としないので、回路構成が簡略化でき、設備コスト
を低減させることができる。The railroad crossing control device according to the present invention is provided with an axle detector for detecting the number of passing axles of a train and detecting the direction of passing of a train at both starting points and ending points, respectively. When the number of axles detected at the reverse start point matches the number of axles detected at the end point, stop control means for stopping sounding of the alarm is provided, and the forward start point and the end point are provided. When the passing train passes the backward starting point, or when the train passing the backward starting point and the end point passes the forward starting point, the sounding start control of the alarm is prohibited. A prohibition means is provided, which eliminates the need for a monitoring timer for monitoring trains passing through railroad crossings, and also eliminates the need for measures to stop outside the vehicle, thereby simplifying the circuit configuration and reducing equipment costs. It can be.
【図1】本発明の一実施の形態に係る踏切制御装置の概
略構成図である。FIG. 1 is a schematic configuration diagram of a railroad crossing control device according to an embodiment of the present invention.
【図2】車軸検知器の検出動作を示す説明図である。FIG. 2 is an explanatory diagram showing a detection operation of an axle detector.
【図3】制御動作を示すフローチャートである。FIG. 3 is a flowchart illustrating a control operation.
【図4】従来の踏切制御装置の概略構成図である。FIG. 4 is a schematic configuration diagram of a conventional railroad crossing control device.
1a〜1c 車軸検知器 a1 第1検知子 a2 第2検知子 2 制御器 r 線路 A 列車 P1 順方向始動点(上り始動点) P2 逆方向始動点(下り始動点) P0 終止点 イ 踏切 ロ 踏切警報機(警報機)(踏切遮断機を含む) 1a-1c Axle detector a1 First detector a2 Second detector 2 Controller r Track A Train P1 Forward starting point (up starting point) P2 Reverse starting point (down starting point) P0 End point A Railroad crossing B Railroad crossing Alarm (alarm) (including railroad crossing barrier)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 斉藤 匡彦 埼玉県浦和市上木崎1丁目13番8号 日本 信号株式会社与野事業所内 (72)発明者 福田 哲夫 埼玉県浦和市上木崎1丁目13番8号 日本 信号株式会社与野事業所内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masahiko Saito 1-13-8 Kamikizaki, Urawa-shi, Saitama Japan Signaling Co., Ltd. Yono Office (72) Inventor Tetsuo Fukuda 1-1-13 Kamikizaki, Urawa-shi, Saitama No. 8 Inside the Japan Signal Corporation Yono Office
Claims (1)
向始動点を設けるとともに他方の側に逆方向始動点を設
け、その順方向始動点又はその逆方向始動点を列車が通
過したことにより踏切警報機の鳴動の開始制御を行い、
その踏切の近傍に設けられた終止点を列車が通過したこ
とによりその踏切警報機の鳴動を停止させる踏切制御装
置において、 前記両始動点及び前記終止点に列車の通過車軸数を検出
するとともに、列車の通過方向を検出する車軸検知器を
それぞれ設け、 前記順方向始動点又は前記逆方向始動点において検出し
た車軸数と前記終止点において検出した車軸数とが一致
したときに、前記踏切警報機の鳴動を停止させる停止制
御手段を設け、 前記順方向始動点及び前記終止点を通過した列車が前記
逆方向始動点を通過したとき、又は、その逆方向始動点
及びその終止点を通過した列車がその順方向始動点を通
過したときに、前記踏切警報機の鳴動開始制御を禁止さ
せる禁止手段を設けた、 ことを特徴とする踏切制御装置。1. A forward starting point is provided on one side at a predetermined distance from a railroad crossing and a reverse starting point is provided on the other side, and the train has passed the forward starting point or the reverse starting point. Controls the sounding of the railroad crossing alarm by
In a railroad crossing control device that stops the sound of the railroad crossing alarm when the train passes the end point provided near the railroad crossing, while detecting the number of passing axles of the train at both the starting point and the end point, An axle detector for detecting a passing direction of a train is provided, and when the number of axles detected at the forward starting point or the backward starting point matches the number of axles detected at the end point, the level crossing alarm is activated. Stop control means for stopping the ringing of the train, when the train that has passed the forward starting point and the end point has passed the reverse starting point, or the train that has passed the reverse starting point and the end point And a prohibition means for prohibiting the sounding start control of the level crossing alarm when the vehicle crosses the forward starting point.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8608998A JPH11278275A (en) | 1998-03-31 | 1998-03-31 | Crossing controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8608998A JPH11278275A (en) | 1998-03-31 | 1998-03-31 | Crossing controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH11278275A true JPH11278275A (en) | 1999-10-12 |
Family
ID=13876996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8608998A Pending JPH11278275A (en) | 1998-03-31 | 1998-03-31 | Crossing controller |
Country Status (1)
Country | Link |
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JP (1) | JPH11278275A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007022136A (en) * | 2005-07-12 | 2007-02-01 | Nippon Signal Co Ltd:The | Axle sensing device |
JP2018008637A (en) * | 2016-07-14 | 2018-01-18 | 東邦電機工業株式会社 | Train traveling direction detector |
-
1998
- 1998-03-31 JP JP8608998A patent/JPH11278275A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007022136A (en) * | 2005-07-12 | 2007-02-01 | Nippon Signal Co Ltd:The | Axle sensing device |
JP2018008637A (en) * | 2016-07-14 | 2018-01-18 | 東邦電機工業株式会社 | Train traveling direction detector |
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