JP2842881B2 - Vehicle detection device - Google Patents
Vehicle detection deviceInfo
- Publication number
- JP2842881B2 JP2842881B2 JP1008846A JP884689A JP2842881B2 JP 2842881 B2 JP2842881 B2 JP 2842881B2 JP 1008846 A JP1008846 A JP 1008846A JP 884689 A JP884689 A JP 884689A JP 2842881 B2 JP2842881 B2 JP 2842881B2
- Authority
- JP
- Japan
- Prior art keywords
- vehicle
- detection
- axle
- axle detectors
- detectors
- 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.)
- Expired - Fee Related
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- Train Traffic Observation, Control, And Security (AREA)
Description
【発明の詳細な説明】 ＜産業上の利用分野＞ 本発明は、一対の車軸検知子が所定の順序で時間的な
重なりをもって検知パルスを生じたことを条件にして車
両及びその進行方向を検知する車両検知装置に関し、車
軸検知子のそれぞれの検知パルスを計数して比較する回
路を備えることにより、車両が通過したにも拘わらず、
車軸検知子の検知パルスが外乱等の影響を受けて所定の
順序で発生しなかった場合でも、車両検知ができるよう
にしたものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention detects a vehicle and its traveling direction on the condition that a pair of axle detectors generate detection pulses with a temporal overlap in a predetermined order. Regarding the vehicle detection device, by providing a circuit that counts and compares each detection pulse of the axle detector, despite the vehicle passing,
Even if the detection pulse of the axle detector is not generated in a predetermined order due to the influence of disturbance or the like, the vehicle can be detected.
＜従来の技術＞ 車両進行方向を識別する最も一般的な方法は、第４図
に示すように、レール１上を走行する車両２の進行方向
ＲまたはＬに沿って、距離ｌを隔てて２つの車軸検知子
３、４を設け、この車軸検知子３、４の検知パルスをフ
リップフロップ等により構成された方向識別回路のセッ
ト入力及びリセット入力として利用する方式である。し
かし、この方式では、車軸検知子３、４における検知パ
ルスの発生順序から車両２の進行方向を判別しているた
め、例えば第５図に示すように、車軸検知子３、４の検
知パルスP1、P2の何れかが、車両通過にも拘わらず、１
度でも発生しなかった場合、方向識別に関する検知パル
スP1、P2の関係が逆転してしまい、誤った進行方向識別
となってしまう。そこで、こうした不都合をなくすた
め、車軸検知子３、４が所定の順序で時間的な重なりを
もって検知パルスを生じたことを条件にして車両及びそ
の進行方向を検知する車両検知装置が知られている。例
えば第６図に示すように、車軸検知子３、４の検知パル
スP1、P2が時間t0だけ重複して発生するようにし、検知
パルスP1、P2がイ→ロ→ハの順序を踏んで発生した場合
は車両２がＲ方向に進行していったと判定し、ハ→ロ→
イの順序を踏んで発生した場合は車両２がＬ方向に進行
していったと判定するのである。<Prior Art> The most common method of identifying the traveling direction of a vehicle is as shown in FIG. 4 along a traveling direction R or L of a vehicle 2 traveling on a rail 1 at a distance l from the vehicle. In this system, two axle detectors 3 and 4 are provided, and the detection pulses of the axle detectors 3 and 4 are used as a set input and a reset input of a direction identification circuit constituted by a flip-flop or the like. However, in this method, since the traveling direction of the vehicle 2 is determined from the order in which the detection pulses are generated in the axle detectors 3 and 4, for example, as shown in FIG. 1 or P 2 is 1
If it does not occur, the relationship between the detection pulses P 1 and P 2 relating to the direction identification is reversed, resulting in erroneous traveling direction identification. In order to eliminate such inconveniences, there is known a vehicle detection device that detects a vehicle and its traveling direction on the condition that the axle detectors 3 and 4 generate detection pulses with a temporal overlap in a predetermined order. . For example, as shown in FIG. 6, the detection pulses P 1 and P 2 of the axle detectors 3 and 4 are generated so as to overlap at time t 0 , and the detection pulses P 1 and P 2 If it occurs according to the order, it is determined that the vehicle 2 has proceeded in the R direction, and C → R →
If it occurs in the order of (a), it is determined that the vehicle 2 has advanced in the L direction.
＜発明が解決しようとする問題点＞ しかしながら、第６図に示す車両検知方式において、
外乱等の影響を受けて、検知パルスP1、P2が所定のイ→
ロ→ハまたはハ→ロ→イの順序を踏んで発生しなかった
場合は、車両検知ができなくなる。例えば第７図に示す
ように、車軸検知子２の検知パルスP1が外乱を受けてそ
の終期t12が検知パルスP2の終期t22よりも遅くなったよ
うな場合である。<Problems to be solved by the invention> However, in the vehicle detection system shown in FIG.
Under the influence of disturbance, etc., the detection pulses P 1 and P 2
If it does not occur in the order of b → c or c → b → b, the vehicle cannot be detected. For example, as shown in FIG. 7, a case that the end t 12 becomes slower than the end t 22 of the detection pulse P 2 detection pulse P 1 of the axle detection element 2 is disturbed.
＜問題点を解決するための手段＞ 上述する従来の問題点を解決するため、本発明に係る
車両検知装置は、複数の車軸検知子と、比較回路と、処
理回路とを含む。前記車軸検知子は、少なくとも２個が
対となって、対の車軸検知子の組を構成する。各組は間
隔をおいて設けられる。各組において対となる前記車軸
検知子のそれぞれは、車両走行に対応して、所定の順序
で時間的な重なりをもって検知パルスを生じるように配
置されている。<Means for Solving the Problems> In order to solve the conventional problems described above, a vehicle detection device according to the present invention includes a plurality of axle detectors, a comparison circuit, and a processing circuit. At least two axle detectors are paired to form a pair of axle detectors. Each set is provided at intervals. Each of the pair of axle detectors in each set is arranged so as to generate detection pulses with a temporal overlap in a predetermined order in accordance with the traveling of the vehicle.
前記比較回路は、前記組のそれぞれの検知パルスを計
数し、かつ、各組の間で計数値を比較し、計数値の一致
または不一致の信号を出力する。The comparing circuit counts each detection pulse of the set, compares the count values between the sets, and outputs a signal indicating whether the count values match or mismatch.
前記処理回路は、各組において対となる車軸検知子の
検知パルスが所定の順序で時間的な重なりをもって生じ
たことを条件にして、車両検知信号及び車両の進行方向
識別信号を生成し、及び、前記比較回路から不一致の信
号が供給されたことを条件にして車両検知信号を生成す
る。The processing circuit generates a vehicle detection signal and a traveling direction identification signal of the vehicle, on the condition that the detection pulses of the paired axle detectors in each set occur with a temporal overlap in a predetermined order, and The vehicle detection signal is generated on condition that a mismatch signal is supplied from the comparison circuit.
＜作用＞ 処理回路は、通常は、各組において対となる車軸検知
子が、所定の順序で時間的な重なりをもって検知パルス
を生じたことを条件にして、車両及びその進行方向を検
知する。<Operation> The processing circuit normally detects the vehicle and its traveling direction on the condition that the paired axle detectors generate detection pulses with a temporal overlap in a predetermined order.
これとは別に、比較回路は、対の車軸検知子の組のそ
れぞれの検知パルスを計数し、かつ、各組の間で計数値
を比較し、計数値の一致または不一致の信号を出力す
る。Separately, the comparison circuit counts each detection pulse of the pair of axle detector pairs, compares the count values between each pair, and outputs a signal indicating whether the count values match or mismatch.
処理回路は比較回路から不一致の信号が供給されたこ
と条件にして車両検知信号を生成する。従って、車軸検
知子の検知パルスが所定の順序で発生しなかった場合で
も、比較回路から供給される計数値の不一致より、車両
検知を行なうことができる。The processing circuit generates the vehicle detection signal on the condition that the mismatch signal is supplied from the comparison circuit. Therefore, even when the detection pulses of the axle detector are not generated in the predetermined order, the vehicle can be detected based on the mismatch of the count values supplied from the comparison circuit.
＜実施例＞ 第１図は本発明に係る車両検知装置の構成を概略的に
示す図である。この実施例では、一対の車軸検知子
（５、６）、（７、８）の組を間隔ａをおいて２組設
け、間隔ａの列車検知区間を構成させてある。車軸検知
子５、６は、第２図に示すように、検知パルスP5、P6が
時間的に重複して発生するような関係に配置され、車軸
検知子７、８も、第３図に示すように、検知パルスP7、
P8が時間的に重複して発生するような関係に配置されて
いる。車軸検知子５、６は車両進行方向Ｒに対しては車
両進入用となり、車両進行方向Ｌに対しては車両進出用
となる。車軸検知子７、８は車両進行方向Ｒに対しては
車両進出用、車両進行方向Ｌに対しては車両進入用とな
る。９は車軸検知子５、６に備えられた検知回路、10は
車軸検知子７、８に備えられ検知回路である。検知回路
９は車軸検知子５、６の検知パルスP5、P6が、第２図の
イ→ロ→ハに示す順序で発生した場合は、車両２がＲ方
向に進行していったとする進行方向識別信号を出力し、
ハ→ロ→イの順序を踏んで発生した場合は車両２がＬ方
向に進行していったとする進行方向識別信号を出力す
る。検知回路10も車軸検知子７、８の検知パルスに関し
て同様の処理を行なう。<Embodiment> Fig. 1 is a view schematically showing a configuration of a vehicle detection device according to the present invention. In this embodiment, two pairs of axle detectors (5, 6) and (7, 8) are provided at intervals a to form a train detection section at interval a. As shown in FIG. 2, the axle detectors 5 and 6 are arranged in such a relationship that the detection pulses P 5 and P 6 are generated in time, and the axle detectors 7 and 8 are also arranged in FIG. As shown in the figure, the detection pulse P 7 ,
P 8 is arranged in a relationship such as those generated by temporally overlapping. The axle detectors 5 and 6 are for vehicle entry in the vehicle traveling direction R, and are for vehicle entry in the vehicle traveling direction L. The axle detectors 7, 8 are for vehicle advance in the vehicle traveling direction R, and are for vehicle entrance in the vehicle traveling direction L. 9 is a detection circuit provided in the axle detectors 5 and 6, and 10 is a detection circuit provided in the axle detectors 7 and 8. The detection circuit 9 determines that the vehicle 2 has proceeded in the R direction when the detection pulses P 5 and P 6 of the axle detectors 5 and 6 are generated in the order shown in FIG. Outputs the traveling direction identification signal,
When the occurrence occurs in the order of c → b → b, the traveling direction identification signal indicating that the vehicle 2 is traveling in the L direction is output. The detection circuit 10 performs the same processing for the detection pulses of the axle detectors 7 and 8.
11は車軸検知子５〜８のそれぞれの検知パルスP5〜P8
を計数して比較する回路である。12は処理回路、13は軌
道リレーである。回路11は計数器とし、比較機能は処理
回路12に持たせてもよい。11 is a detection pulse P5 to P8 of each of the axle detectors 5 to 8
This is a circuit for counting and comparing. 12 is a processing circuit, and 13 is a track relay. The circuit 11 may be a counter, and the processing circuit 12 may have a comparison function.
次に動作について説明する。車両２がＲ方向に進行し
て車両検知区間ａに進入する場合、車軸検知子５、６に
は、第２図のイ→ロ→ハに示した順序で時間的に重複す
る検知パルスP5、P6が発生する。この検知パルスP5、P6
は検知回路９に入力され、検知回路９から処理回路12
に、進行方向識別信号P56が入力される。処理回路12は
進行方向識別信号P56の入力に基づき軌道リレー13に落
下動作をさせる。軌道リレー13の落下動作は車両検知区
間ａに車両有りの出力となる。この車両有りの出力は車
両２が車両検知区間ａ内にある間は継続して出力され
る。Next, the operation will be described. If the vehicle 2 enters the vehicle detection section a proceeding in the R direction, the axle sensing element 5,6, the detection pulse P 5 that temporally overlapping in the order shown in (a) → (b) → (c) of FIG. 2 , P 6 is generated. These detection pulses P 5 and P 6
Is input to the detection circuit 9, and the detection circuit 9
Then, the traveling direction identification signal P56 is input. Processing circuit 12 causes a drop operation on track relay 13 based on the input traveling direction identifying signal P 56. The drop operation of the track relay 13 outputs an output indicating that a vehicle is present in the vehicle detection section a. This output with the vehicle is continuously output while the vehicle 2 is in the vehicle detection section a.
車両２が車両検知区間ａ内をさらに進行し、車軸検知
子７、８を通過すると、車軸検知子７、８からは、第３
図のイ→ロ→ハで示した順序で検知パルスP7、P8が発生
する。この検知パルスP7、P8は検知回路10に入力され、
検知回路10から処理回路12に対して、車両進出に該当す
る進行方向識別信号P78が入力される。処理回路12は進
行方向識別信号P78の入力に基づき軌道リレー13を打上
させる。これにより車両検知区間ａに車両無しの出力が
得られる。When the vehicle 2 further moves in the vehicle detection section a and passes through the axle detectors 7 and 8, the axle detectors 7 and 8 output the third
The detection pulses P 7 and P 8 are generated in the order shown in FIG. The detection pulses P 7 and P 8 are input to the detection circuit 10,
The traveling direction identification signal P 78 corresponding to vehicle advance is input from the detection circuit 10 to the processing circuit 12. Processing circuit 12 to launch orbital relay 13 based on the input traveling direction identifying signal P 78. As a result, an output without a vehicle is obtained in the vehicle detection section a.
一方、上述の車両検知動作と併せて、車軸検知子５〜
８の各検出パルスP5〜P8を回路11で計数し、比較する。
車両２が車軸検知子５、６を通過して車両検知区間ａ内
に進入した状態では、検知パルスP5の計数値n5と検知パ
ルスP6の計数値n6は一致しているが、車軸検知子７、８
の検知パルスP7、P8の計数値n7、n8は上記計数値n5、n6
と不一致である。この不一致情報は処理回路12に与えら
れる。処理回路12では計数値n5、n6と計数値n7、n8との
不一致情報に基づき軌道リレー13に落下動作をさせ、車
両検知区間ａ内に車両有りの出力を生じさせる。ここ
で、検出回路９による軌道リレー13の落下動作が先行し
た場合は、計数値n5、n6と計数値n7、n8との不一致によ
る軌道リレー13の落下動作は事実上なくなる。しかし、
車両２が車軸検知子５、６を通過して車両検知区間ａ内
に進入したにも拘わらず、車軸検知子５、６の検知パル
スP5またはP6が外乱等の影響を受けて、第２図のイ→ロ
→ハの順序で発生しなかった場合、計数値n5、n6と計数
値n7、n8との不一致による軌道リレー13の落下動作が確
保されので、車両有りの出力が得られ、検知パルス異常
時のバックアップ動作が行なわれる。On the other hand, along with the above-described vehicle detection operation, the axle detectors 5 to 5
Each detected pulse P 5 to P 8 8 counted in circuit 11 and compared.
In a state where the vehicle 2 has passed through the axle detecting element 5 and 6 enters the vehicle detection section a, but the count value n 6 count value n 5 and the detection pulse P 6 for detecting pulses P 5 are matched, Axle detector 7, 8
The count values n 7 and n 8 of the detection pulses P 7 and P 8 of the above are the above count values n 5 and n 6
Does not match. This mismatch information is provided to the processing circuit 12. In the processing circuit 12 counts n 5, and n 6 is a drop operation on track relay 13 based on the discrepancy information the count value n 7, n 8, causing the output of there vehicle in the vehicle detection section a. Here, if the falling operation of the track relay 13 by the detection circuit 9 is preceded, falling operation of the track relay 13 by mismatch between count n 5, n 6 and the count value n 7, n 8 is virtually eliminated. But,
Vehicle 2 passes through the axle sensing element 5,6 despite enters the vehicle detection section a, the detection pulse P 5 or P 6 of the axle detection element 5 and 6 under the influence of disturbance or the like, the If it does not occur in the order of 2 view of Lee → b → c, than is secured dropping operation of the track relay 13 by mismatch between count n 5, n 6 and the count value n 7, n 8, the vehicle there of An output is obtained, and a backup operation is performed when a detection pulse is abnormal.
次に車両２が車軸検知子７、８を通過して車両検知区
間ａの外部に抜けた場合は、各計数値n5〜n8が全て一致
する。その一致信号を処理回路12に与えて、処理回路12
により軌道リレー13を打上させる。従って、仮に、外乱
等の影響を受けて車軸検知子５〜８に所定の順序の検知
パルスが得られなかった場合でも、車両無しの判定出力
が得られることとなる。Then the vehicle 2 passes through the axle sensing element 7, 8 If missing the outside of the vehicle detection section a, the count value n 5 ~n 8 matches all. The coincidence signal is given to the processing circuit 12, and the processing circuit 12
Causes the orbit relay 13 to launch. Therefore, even if the detection pulses in the predetermined order are not obtained from the axle detectors 5 to 8 due to the influence of disturbance or the like, the determination output indicating that there is no vehicle can be obtained.
車両２がＬ方向に進行する場合は、車軸検知子７、８
が車両進入用となり、車軸検知子５、６が車両進出用と
なる点を除けば、上述の説明と同様であるので、詳細は
省略する。また、実施例では、車両検知区間ａ内に対す
る車両の進入及び進出を検知する構成を示したので、２
組の車軸検知子（５、６）、（７、８）を備えいるが、
進行方向識別だけの場合は車軸検知子５〜８のうち、１
組の車軸検知子（５、６）または（７、８）を備えるだ
けでよい。When the vehicle 2 travels in the L direction, the axle detectors 7 and 8
Is the same as that described above, except that is for vehicle entry, and the axle detectors 5 and 6 are for vehicle entry, so the details are omitted. Further, in the embodiment, the configuration for detecting the entry and the exit of the vehicle into the vehicle detection section a is shown.
A pair of axle detectors (5, 6), (7, 8)
In the case where only the traveling direction is identified, one of the axle detectors 5 to 8 is used.
It is only necessary to provide a set of axle detectors (5, 6) or (7, 8).
＜発明の効果＞ 以上述べたように、本発明によれば、車両が通過した
にも拘わらず、車軸検知子の検知パルスが外乱等の影響
を受けて所定の順序で発生しなかった場合でも、車両を
検知し得る車両検知装置を提供できる。<Effects of the Invention> As described above, according to the present invention, even if the detection pulse of the axle detector is not generated in a predetermined order due to the influence of disturbance or the like despite the passage of the vehicle, And a vehicle detection device capable of detecting a vehicle.
第１図は本発明に係る車両検知装置の構成を概念的に示
す図、第２図及び第３図は車軸検知子の検知パルスの発
生の時間的な関係を示す図、第４図は従来の車両検知装
置の構成を示す図、第５図は同じく検知パルスの発生の
時間的な関係とその問題点を示す図、第６図は別の従来
例における検知パルスの発生の時間的な関係を示す図、
第７図は同じく検知パルスの発生の時間的な関係とその
問題点を示す図である。 １……レール、２……車両 ５〜８……車軸検知子 ９、10……検知回路 11……検知パルスを計数して比較する回路FIG. 1 is a diagram conceptually showing a configuration of a vehicle detection device according to the present invention, FIGS. 2 and 3 are diagrams showing a time relationship of generation of a detection pulse of an axle detector, and FIG. FIG. 5 is a diagram showing a time relationship of detection pulse generation and its problem similarly, and FIG. 6 is a diagram showing a time relationship of detection pulse generation in another conventional example. Figure showing
FIG. 7 is a diagram showing a temporal relationship of generation of the detection pulse and its problem. 1 ... rail, 2 ... vehicle 5-8 ... axle detector 9, 10 ... detection circuit 11 ... circuit for counting and comparing detection pulses
Claims (2)
路とを含む車両検知装置であって、 前記車軸検知子は、その少なくとも２個が対となって、
対の車軸検知子の組を構成し、各組は間隔をおいて設け
られ、各組において対となる前記車軸検知子のそれぞれ
は、車両走行に対応して、所定の順序で時間的な重なり
をもって検知パルスを生じるように配置されており、 前記比較回路は、前記組のそれぞれの検知パルスを計数
し、かつ、各組の間で計数値を比較し、計数値の一致ま
たは不一致の信号を出力し、 前記処理回路は、各組において対となる車軸検知子の検
知パルスが所定の順序で時間的な重なりをもって生じた
ことを条件にして、車両検知信号及び車両の進行方向識
別信号を生成し、及び、前記比較回路から不一致の信号
が供給されたことを条件にして車両検知信号を生成する 車両検知装置。1. A vehicle detection device including a plurality of axle detectors, a comparison circuit, and a processing circuit, wherein at least two of the axle detectors form a pair,
A pair of axle detectors constitute a set, each set being provided at an interval, and each of the axle detectors forming a pair in each set overlaps temporally in a predetermined order in accordance with vehicle traveling. The comparison circuit counts each detection pulse of the set, compares the count values between the sets, and generates a signal indicating a match or mismatch between the count values. The processing circuit generates a vehicle detection signal and a vehicle traveling direction identification signal on the condition that detection pulses of a pair of axle detectors in each group have a temporal overlap in a predetermined order. And a vehicle detection device that generates a vehicle detection signal on condition that a mismatch signal is supplied from the comparison circuit.
の車軸検知子の組を車両進出用とした 特許請求の範囲第１項に記載の車両検知装置。2. The vehicle detecting device according to claim 1, wherein one set of axle detectors is used for vehicle entry and the other set of axle detectors is used for vehicle advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1008846A JP2842881B2 (en) | 1989-01-18 | 1989-01-18 | Vehicle detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1008846A JP2842881B2 (en) | 1989-01-18 | 1989-01-18 | Vehicle detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02189266A JPH02189266A (en) | 1990-07-25 |
| JP2842881B2 true JP2842881B2 (en) | 1999-01-06 |
Family
ID=11704114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1008846A Expired - Fee Related JP2842881B2 (en) | 1989-01-18 | 1989-01-18 | Vehicle detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2842881B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101444640B1 (en) * | 2014-05-13 | 2014-09-26 | 박현수 | Track control apparatus and track control method thereby |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4398052B2 (en) * | 2000-03-22 | 2010-01-13 | 日本信号株式会社 | Wheel detector |
| JP6851113B2 (en) * | 2017-03-30 | 2021-03-31 | 大同信号株式会社 | Axle counting device |
| JP7015608B2 (en) * | 2018-01-31 | 2022-02-03 | 大同信号株式会社 | Axle detector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5911064U (en) * | 1982-07-14 | 1984-01-24 | 日本信号株式会社 | signal processing circuit |
-
1989
- 1989-01-18 JP JP1008846A patent/JP2842881B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101444640B1 (en) * | 2014-05-13 | 2014-09-26 | 박현수 | Track control apparatus and track control method thereby |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02189266A (en) | 1990-07-25 |
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| LAPS | Cancellation because of no payment of annual fees |