JP2000353291A - Number of axel detecting device for vehicle - Google Patents
Number of axel detecting device for vehicleInfo
- Publication number
- JP2000353291A JP2000353291A JP11164413A JP16441399A JP2000353291A JP 2000353291 A JP2000353291 A JP 2000353291A JP 11164413 A JP11164413 A JP 11164413A JP 16441399 A JP16441399 A JP 16441399A JP 2000353291 A JP2000353291 A JP 2000353291A
- Authority
- JP
- Japan
- Prior art keywords
- vehicle
- light
- road surface
- detecting
- light receiving
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、高速道路などの
料金所に設置されて、通過する車両の車軸数を検知する
車軸数検知装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axle number detection device installed at a tollgate such as a highway to detect the number of axles of vehicles passing therethrough.
【０００２】[0002]
【従来の技術】例えば高速道路などの有料道路では、車
両の車軸数に応じて通行料金が異なり、料金所には、そ
の車軸数を検知するための車軸数検知装置が設置されて
いる。従来、この車軸を検知する方式としては、踏板方
式が主流であった。この踏板方式は、路面に埋め込まれ
た接触型のセンサ部の上を車輪が通過すると、このセン
サ部が踏圧により作動し、その回数から車両の車軸数を
検知するものとなっている。2. Description of the Related Art For example, on a toll road such as an expressway, tolls differ depending on the number of axles of a vehicle, and a toll booth is provided with an axle number detecting device for detecting the number of axles. Conventionally, as a method for detecting the axle, a tread plate method has been mainly used. In the tread plate system, when a wheel passes over a contact-type sensor unit embedded in a road surface, the sensor unit operates by a tread pressure, and the number of axles of the vehicle is detected from the number of times.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上述の踏圧
方式によれば、接触型のセンサ部を路面に埋め込むため
の工事や、そのメンテナンスに多くの手間とコストを要
するという問題がある。この問題を解消すべく、非接触
型のセンサを用いた方式として、透過形光ビーム遮断方
式（直接光受光方式）が知られている。この方式では、
車輪で光ビームが遮られる回数から車軸数を検知する。
しかしながら、この方式によれば、光ビームの位置を車
輪の位置に合わせる必要上、料金所のアイランド上の低
い位置に光送信部および光受信部を設置しなければなら
ず、アイランドに対する特殊な工事を必要とするという
問題がある。しかも、この方式では、例えば泥よけなど
の車輪以外のものも一軸として誤検知するという問題も
ある。However, according to the above-described treading system, there is a problem that a lot of labor and cost are required for construction for embedding a contact-type sensor unit on a road surface and maintenance thereof. In order to solve this problem, a transmission type light beam blocking method (direct light receiving method) is known as a method using a non-contact type sensor. In this scheme,
The number of axles is detected from the number of times the light beam is blocked by the wheels.
However, according to this method, since the position of the light beam must be adjusted to the position of the wheels, the light transmitting unit and the light receiving unit must be installed at a low position on the island of the tollgate. There is a problem that requires. In addition, in this method, there is a problem in that an object other than a wheel such as a mudguard is erroneously detected as one axis.
【０００４】また、他の方式としてレーザパルス測距方
式があるが、送受一体型のセンサを用いて、反射光を受
光する方式である為、センサを上方に設置できる。しか
しながら、この方式によれば、レーザパルスの送信部と
受信部とが同じ位置にあるため、例えば降雪時の雪によ
る反射で誤検知するなど、気象の影響を受けやすく、信
頼性にかけるという問題がある。[0004] Another method is a laser pulse distance measuring method. However, since it is a method of receiving reflected light by using a transmission / reception integrated sensor, the sensor can be installed above. However, according to this method, since the transmitting part and the receiving part of the laser pulse are located at the same position, they are susceptible to the weather, such as erroneous detection due to reflection by snow during snowfall, and the problem is that reliability is increased. There is.
【０００５】この発明は、上記事情に鑑みてなされたも
ので、容易に設置することができ、精度よく車軸を検知
することのできる車両の車軸検知装置を提供することを
課題とする。The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an axle detecting device for a vehicle that can be easily installed and that can accurately detect an axle.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するた
め、この発明は以下の構成を有する。すなわち、この発
明は、路面上を通過する車両（例えば後述する車両１３
に相当する構成要素）の車輪が遮光するように前記路面
にパルス状のスポット光（例えば後述する送光ビーム８
に相当する要素）を投光する投光手段（例えば後述する
送光部５に相当する構成要素）と、前記投光手段に対向
するように配置され、前記投光手段から投光されて前記
路面で反射されたスポット光を受光する受光手段（例え
ば後述する受光部７に相当する構成要素）と、前記受光
手段に受光されたスポット光のパルス数（例えば後述す
る受光部７の出力１５に相当する要素）に基づき、前記
路面上を通過する車両の車軸数をカウントするカウント
手段（例えば後述する信号処理部７に相当する構成要
素）と、を備えたことを特徴とする。In order to solve the above-mentioned problems, the present invention has the following arrangement. That is, the present invention relates to a vehicle (for example, a vehicle 13 described later) that passes on a road surface.
Pulsed spot light (for example, a light transmitting beam 8 described later) is applied to the road surface so that the wheels of the
And a light-emitting unit (e.g., a component corresponding to a light-transmitting unit 5 described later) that projects light from the light-emitting unit. A light receiving unit (for example, a component corresponding to a light receiving unit 7 described later) for receiving the spot light reflected on the road surface, and a pulse number of the spot light received by the light receiving unit (for example, an output 15 of the light receiving unit 7 described later) Counting means for counting the number of axles of the vehicle passing on the road surface based on the corresponding elements) (for example, a component corresponding to a signal processing unit 7 described later).
【０００７】この発明によれば、投光手段から投光され
たスポット光は、路面で反射されて受光手段に受光され
る。ここで、車両が侵入してくると、この車両の車輪が
スポット光を遮り、受光手段が受光するスポット光のパ
ルスが部分的に欠落する。このパルスが欠落した部分は
車輪、すなわち車軸を表し、この欠落部分から車軸が検
知される。According to this invention, the spot light projected from the light projecting means is reflected on the road surface and received by the light receiving means. Here, when the vehicle enters, the wheels of the vehicle block the spot light, and the pulse of the spot light received by the light receiving unit is partially missing. The portion where the pulse is missing represents a wheel, that is, an axle, and the axle is detected from the missing portion.
【０００８】また、前記車両の車頭侵入から車尾退出ま
での期間を検知する車両検知手段（例えば後述する車両
検知用発光部４、車両検知用受光部６、信号処理部１１
に相当する構成要素）をさらに備え、前記カウント手段
は、前記車両検知手段により検知された期間（例えば後
述する出力１４のオンの期間に相当する要素）において
カウントされたパルス数に基づき、前記車両の車軸数を
カウントするようにしてもよい。Further, vehicle detecting means (for example, a vehicle detecting light emitting unit 4, a vehicle detecting light receiving unit 6, a vehicle detecting light receiving unit 6, and a signal processing unit 11 to be described later) for detecting a period from the entrance of the vehicle into the head of the vehicle to the rear of the vehicle.
And the counting means is configured to detect the vehicle based on the number of pulses counted in a period detected by the vehicle detecting means (for example, an element corresponding to an on-period of an output 14 described later). May be counted.
【０００９】また、前記路面に投光されるスポット光の
パターンが、車両の進行方向に対して直交する方向に縦
長のパターン（後述する送光ビーム８のパターンに相当
する要素）であることを特徴とする。また、前記路面上
に、前記スポット光を反射する反射帯（例えば後述する
反射帯９に相当する要素）を設けてもよい。また、前記
車両検知手段により検知された期間において前記投光手
段を作動させるようにしてもよい。Further, the pattern of the spot light projected on the road surface is a vertically elongated pattern in a direction perpendicular to the traveling direction of the vehicle (an element corresponding to a pattern of a light transmission beam 8 described later). Features. Further, a reflection band (for example, an element corresponding to a reflection band 9 described later) that reflects the spot light may be provided on the road surface. Further, the light emitting means may be operated during a period detected by the vehicle detecting means.
【００１０】投光手段と受光手段の設置位置は、路面中
央から見て同じ仰角となるように設置してもよい。これ
により、受光手段で反射光を最も効率的に受信（受光）
できる。また、雨天時に路面が鏡面状態になっても、受
信手段で直接反射光を受信（受光）することができる。The light emitting means and the light receiving means may be installed at the same elevation angle as viewed from the center of the road surface. As a result, the reflected light is most efficiently received (received) by the light receiving means.
it can. Further, even when the road surface is in a mirror surface state in rainy weather, the reflected light can be directly received (received) by the receiving means.
【００１１】[0011]
【発明の実施の形態】以下、図面を参照しながら、この
発明の実施の形態を説明する。図１に、この発明の実施
の形態にかかる車両の車軸検知装置の構成を示す。図１
は、この実施の形態にかかる車軸検知装置を車両１３の
侵入／退出方向から見た構成を示す。同図に示すよう
に、路面両側のアイランド１上に、送光塔２と受光塔３
がそれぞれ配置される。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration of an axle detecting device for a vehicle according to an embodiment of the present invention. FIG.
1 shows a configuration of the axle detection device according to this embodiment as viewed from the ingress / egress direction of the vehicle 13. As shown in FIG. 1, a light transmitting tower 2 and a light receiving tower 3 are placed on islands 1 on both sides of a road surface.
Are respectively arranged.
【００１２】送光塔２には、車両検知用発光部４とその
最下部に車軸検知用の送光部５とが設置され、それぞれ
近赤外のＬＥＤ（発光ダイオード）によりスポット状の
パルス光を発光する。車両検知用発光部４は、垂直方向
に配置された複数の発光器群をもっている。また、送光
部５から投光される送光ビーム８は縦長（ファンビー
ム）の発光パターンを持っており、路面２０上に照射さ
れる。一方、受光塔３には、車両検知用発光部４に対向
するように複数の受光器群をもつ車両検知用受光部６が
配置され、その最下部には、送光部５に対向するように
車軸検知用の受光部７が設置される。車両用受光部６
は、車両検知用発光部４５からのパルス光（車両検知用
ビーム１２）を受光し、受光部７は、送光部５から投光
されて路面２０で反射されたパルス光（送光ビーム８）
を受光する。The light transmitting tower 2 is provided with a vehicle detecting light emitting section 4 and a light transmitting section 5 for detecting an axle at the lowermost portion thereof. Emits light. The vehicle detection light emitting section 4 has a plurality of light emitter groups arranged in a vertical direction. Further, the light transmission beam 8 emitted from the light transmission unit 5 has a vertically long (fan beam) light emission pattern and is irradiated on the road surface 20. On the other hand, in the light receiving tower 3, a vehicle detecting light receiving unit 6 having a plurality of light receiving units is disposed so as to face the vehicle detecting light emitting unit 4, and at the lowermost part thereof, the light receiving unit 6 faces the light transmitting unit 5. A light receiving unit 7 for detecting an axle is installed in the vehicle. Light receiving part 6 for vehicles
Receives the pulse light (vehicle detection beam 12) from the vehicle detection light emitting unit 45, and receives the pulse light (light transmission beam 8) emitted from the light transmission unit 5 and reflected on the road surface 20. )
Is received.
【００１３】図２に、この実施の形態にかかる車軸検知
装置を上方から見た構成を示す。同図に示すように、路
面２０上には、送光部５から投光された送光ビーム８を
反射するための反射帯９（白帯）が設けられている。送
光ビーム８が十分なパワーを持っていれば、この反射帯
９は無くてもよい。車軸検知用受光部７は、路面に照射
される送光ビーム８のパターンに合わせた受光視野１０
を持っており、不要可視光除去の為の光学フィルタを前
面に有し、センサとしてフォトダイオードを使用してい
る。また、送光部５から受光部７には、タイミングを合
わせるための同期信号が配信される。受光塔３内には、
車両検知用受光部６の出力と車軸検知用の受光部７の出
力を監視する信号処理部１１が設けられている。FIG. 2 shows a configuration of the axle detecting device according to this embodiment viewed from above. As shown in the figure, a reflection band 9 (white band) for reflecting the light transmission beam 8 emitted from the light transmission unit 5 is provided on the road surface 20. If the light transmission beam 8 has a sufficient power, the reflection band 9 may not be provided. The axle detecting light receiving unit 7 includes a light receiving field 10 adapted to the pattern of the light transmission beam 8 radiated on the road surface.
It has an optical filter on the front surface for removing unnecessary visible light, and uses a photodiode as a sensor. Further, a synchronization signal for synchronizing timing is distributed from the light transmitting unit 5 to the light receiving unit 7. In the light receiving tower 3,
A signal processing unit 11 is provided for monitoring the output of the vehicle detecting light receiving unit 6 and the output of the axle detecting light receiving unit 7.
【００１４】以下、図３を参照しながら、この実施の形
態の動作を説明する。送光塔２に設置された車両検知用
発光部４の発光器（図示なし）と車軸検知用の送光部５
は、タイミングをずらせて数百から数ｋＨｚで車両検知
用ビーム１２と送光ビーム８をそれぞれ発光する。その
タイミング信号は受光塔３に同期信号として配信され、
受光塔３では、それぞれ対応するビームを受信する。車
両が存在しないときには車両検知用ビーム１２は常に受
信されている状態であり、このとき車軸検知用の送光ビ
ーム８は発光されていてもいなくてもどちらでも良い。
信号処理部１１では、車両検知用受光部６の出力１４と
車軸検知用の受光部７の出力１５のパルスをカウント
し、これらを常に監視している。The operation of this embodiment will be described below with reference to FIG. A light emitting unit (not shown) of a vehicle detecting light emitting unit 4 installed in the light transmitting tower 2 and a light transmitting unit 5 for detecting an axle.
Emits the vehicle detecting beam 12 and the light transmitting beam 8 at several hundreds to several kHz at different timings. The timing signal is distributed to the light receiving tower 3 as a synchronization signal,
The light receiving tower 3 receives the corresponding beam. When no vehicle is present, the vehicle detection beam 12 is always being received, and at this time, the axle detection light transmission beam 8 may or may not be emitted.
The signal processing unit 11 counts the pulses of the output 14 of the light detecting unit 6 for vehicle detection and the output 15 of the light receiving unit 7 for detecting axle, and constantly monitors these.
【００１５】次に、車両１３が進入してくると、まず車
頭部で車両検知用ビーム１２が遮られ、車両検知用受光
部６の出力１４がオン状態となって車両１３の車頭侵入
が検出される。さらに車両１３が侵入を続けると、送光
ビーム８が車両１３の車輪（前輪）で遮られ、受光部７
の出力１５にパルスの欠落が生じる。以降、後続する各
車輪に対応して出力１５にパルスの欠落が生じる。Next, when the vehicle 13 enters, first, the vehicle detection beam 12 is blocked by the head of the vehicle, the output 14 of the vehicle detection light receiving unit 6 is turned on, and the vehicle 13 enters the head of the vehicle 13. Is detected. When the vehicle 13 continues to enter, the light transmission beam 8 is blocked by the wheels (front wheels) of the vehicle 13 and the light receiving unit 7
The output 15 has a pulse missing. Thereafter, a pulse drop occurs in the output 15 corresponding to each subsequent wheel.
【００１６】ここで、車両１３の車頭侵入が検知される
と、信号処理部１１は、受光部７の出力１５のパルスが
連続して抜ける部分を一軸として検知し、車軸数出力１
６をオンにする。車両１３が抜け出て、車尾退出が検出
されると、車両検知用受光部６の出力１４がオフとな
り、信号処理部１１は車軸数出力１６を停止する。図３
に示す例では、３カ所で車軸数出力１６がオンとなって
おり、車両１３の車軸数として「３」が検知される。以
上により、車両ごとの車軸数が精度よく検知される。Here, when the ingress of the head of the vehicle 13 is detected, the signal processing unit 11 detects, as one axis, a portion where the pulse of the output 15 of the light receiving unit 7 continuously passes, and outputs the axle number output 1.
Turn 6 on. When the vehicle 13 exits and the tail exit is detected, the output 14 of the vehicle detecting light receiving unit 6 is turned off, and the signal processing unit 11 stops the axle number output 16. FIG.
In the example shown in FIG. 7, the axle number output 16 is turned on at three places, and “3” is detected as the axle number of the vehicle 13. As described above, the number of axles for each vehicle is accurately detected.
【００１７】この実施の形態では、車両検知用に対向形
透過光検知方式を用いているが、基本的に光の干渉が無
ければ他の車両検知器との併用も可能である。また、こ
の実施の形態では、車軸検知用送光ビームに近赤外ＬＥ
Ｄを使用したが、ＬＥＤの代わりに半導体レーザを用い
てもよい。In this embodiment, the opposed-type transmitted light detection system is used for vehicle detection. However, basically, if there is no light interference, it can be used together with another vehicle detector. Also, in this embodiment, the near-infrared LE beam is transmitted to the axle detecting light transmission beam.
Although D is used, a semiconductor laser may be used instead of the LED.
【００１８】また、車両を検知したとき以外に車軸検知
用の送光ビーム８を発光させないように制御すれば、消
費電力を低減させることができ、しかも発光素子の寿命
を延伸させることができる。また、送光部５と受光部７
の設置位置は、路面中央から見て同じ仰角となるように
設置すれば、受光部７により反射光を最も効率的に受光
することが可能となる。また、雨天時に路面が鏡面状態
になっても、受光部７により直接反射光を受光すること
ができる。Further, by controlling the light transmission beam 8 for axle detection not to emit light except when the vehicle is detected, it is possible to reduce power consumption and extend the life of the light emitting element. Further, the light transmitting unit 5 and the light receiving unit 7
If the installation position is set at the same elevation angle when viewed from the center of the road surface, the light receiving unit 7 can receive the reflected light most efficiently. Further, even when the road surface is in a mirror surface state in rainy weather, the light receiving unit 7 can directly receive the reflected light.
【００１９】以下に、この実施の形態による効果をまと
める。 （１）料金所ゲートを通過する車両の車軸数を非接触で
検知することができるため、踏板方式のような路面への
埋め込み工事が不要となり、低価格な装置が可能とな
る。 （２）メンテナンス面でも踏板の交換工事等が不要とな
りコストを抑えることができる。 （３）アイランドの特殊な加工工事を必要としない。 （４）車輪の様に大きいものにより送光ビーム８が確実
にさえぎられる場合にのみ車軸が検知される。したがっ
て、車輪以外の泥除け等を一軸として誤検知することが
ない。The effects of this embodiment will be summarized below. (1) Since the number of axles of vehicles passing through the toll gate can be detected in a non-contact manner, embedding work on a road surface such as a tread plate type is not required, and a low-cost device can be realized. (2) The maintenance work does not require the replacement work of the tread plate, and the cost can be suppressed. (3) No special processing of the island is required. (4) The axle is detected only when the light transmission beam 8 is reliably blocked by a large object such as a wheel. Therefore, there is no erroneous detection of mudguard other than wheels as one axis.
【００２０】（５）降雪などの気象条件の影響を受ける
ことなく、精度よく車軸を検知することができる。 （６）従来技術が採用するレーザ測距方式では、ポリゴ
ンミラー等メカニカルスキャンを必要とするが、本実施
の形態では、メカニカルな可動部分が無く装置の寿命を
延ばすことができる。 （７）この実施の形態によれば、車体の最低地上高が極
端に低い場合に車軸が正確に検出できない事態も起こり
うるが、通常、車軸数検知が必要な車両は大型車である
為、実用上問題は生じない。 （８）送光部５と受光部７の設置位置を、路面中央から
見て同じ仰角となるように設置すれば、路面での反射光
を最も効率的に受光できる。(5) The axle can be detected accurately without being affected by weather conditions such as snowfall. (6) The laser ranging method employed in the prior art requires a mechanical scan such as a polygon mirror, but in the present embodiment, there is no mechanical movable part, and the life of the apparatus can be extended. (7) According to this embodiment, when the minimum ground clearance of the vehicle body is extremely low, the situation where the axle cannot be accurately detected may occur. However, since the vehicle which needs to detect the number of axles is usually a large vehicle, There is no practical problem. (8) If the light transmitting unit 5 and the light receiving unit 7 are installed at the same elevation angle as viewed from the center of the road surface, the light reflected on the road surface can be received most efficiently.
【００２１】[0021]
【発明の効果】以上説明したように、この発明によれ
ば、路面上を通過する車両の車輪が遮光するように前記
路面にパルス状のスポット光を投光する投光手段と、前
記投光手段に対向するように配置され、前記投光手段か
ら投光されて前記路面で反射されたスポット光を受光す
る受光手段と、前記受光手段に受光されたスポット光の
パルス数に基づき、前記路面上を通過する車両の車軸数
をカウントするカウント手段と、を備えたので、装置を
容易に設置することができ、精度よく車軸を検知するこ
とができる。As described above, according to the present invention, the light projecting means for projecting the pulsed spot light on the road surface so that the wheels of the vehicle passing on the road surface block the light, and the light projecting means A light receiving unit that receives the spot light projected from the light projecting unit and reflected on the road surface, based on a pulse number of the spot light received by the light receiving unit; Since there is provided a counting means for counting the number of axles of vehicles passing above, the device can be easily installed, and the axles can be detected accurately.
【００２２】また、前記車両の車頭侵入から車尾退出ま
での期間を検知する車両検知手段をさらに備え、前記カ
ウント手段は、前記車両検知手段により検知された期間
においてカウントされたパルス数に基づき、前記車両の
車軸数をカウントするようにしたので、車両ごとの車軸
数を検知することができる。また、前記路面に投光され
るスポット光のパターンが、車両の進行方向に対して直
交する方向に縦長のパターンであるようにしたので、路
面の状態に影響される事なく、受光手段がスポット光を
受光することができ、安定的に車軸数を検知することが
できる。[0022] The vehicle may further comprise a vehicle detecting means for detecting a period of time from when the vehicle enters the head of the vehicle to when the vehicle exits from the tail, wherein the counting means is configured to detect a period based on the number of pulses counted during the period detected by the vehicle detecting means. Since the number of axles of the vehicle is counted, the number of axles for each vehicle can be detected. Further, since the pattern of the spot light projected on the road surface is a vertically long pattern in a direction orthogonal to the traveling direction of the vehicle, the light receiving means is not affected by the state of the road surface, and Light can be received, and the number of axles can be detected stably.
【００２３】また、前記路面上に、前記スポット光を反
射する反射帯を設けたので、スポット光の出力が小さい
場合であっても、受光手段がスポット光を受光すること
ができ、安定的に車軸数を検知することができる。さら
に、前記車両検知手段により検知された期間において前
記投光手段を作動させるようにしたので、投光手段の消
費電力を低減させることができ、この投光手段の寿命を
延ばすことができる。Further, since a reflection band for reflecting the spot light is provided on the road surface, even when the output of the spot light is small, the light receiving means can receive the spot light and stably. The number of axles can be detected. Further, since the light emitting means is operated during the period detected by the vehicle detecting means, the power consumption of the light emitting means can be reduced, and the life of the light emitting means can be extended.
【図１】 この発明の実施の形態にかかる車両の車軸検
知装置の構成を示す図である。FIG. 1 is a diagram showing a configuration of a vehicle axle detecting device according to an embodiment of the present invention.
【図２】 この発明の実施の形態にかかる車両の車軸検
知装置の構成および発光パターンを説明するための図
（上視図）である。FIG. 2 is a diagram (top view) for explaining a configuration and a light emission pattern of the vehicle axle detection device according to the embodiment of the present invention;
【図３】 この発明の実施の形態にかかる車両の車軸検
知装置の動作を説明するための波形図である。FIG. 3 is a waveform diagram for explaining an operation of the vehicle axle detecting device according to the embodiment of the present invention;
１：アイランド ２：送光塔 ３：受光塔 ４：車両検知用発光部 ５：送光部 ６：車両検知用受光部 ７：受光部 ８：送光ビーム ９：反射帯 １０：受光視野 １１：信号処理部 １２：車両検知用ビーム １３：車両 ２０：路面 1: Island 2: Light transmitting tower 3: Light receiving tower 4: Light emitting unit for vehicle detection 5: Light transmitting unit 6: Light receiving unit for vehicle detection 7: Light receiving unit 8: Light transmitting beam 9: Reflection band 10: Light receiving field 11: Signal processing unit 12: Vehicle detection beam 13: Vehicle 20: Road surface
Claims (5)
ように前記路面にパルス状のスポット光を投光する投光
手段と、 前記投光手段に対向するように配置され、前記投光手段
から投光されて前記路面で反射されたスポット光を受光
する受光手段と、 前記受光手段に受光されたスポット光のパルス数に基づ
き、前記路面上を通過する車両の車軸数をカウントする
カウント手段と、 を備えたことを特徴とする車両の車軸数検知装置。1. A light projecting means for projecting a pulsed spot light on the road surface so that a wheel of a vehicle passing on a road surface blocks light, and the light projecting means is arranged to face the light projecting means, and Light receiving means for receiving the spot light projected from the means and reflected on the road surface; and a count for counting the number of axles of the vehicle passing on the road surface based on the number of pulses of the spot light received by the light receiving means. Means for detecting the number of axles of a vehicle, comprising:
期間を検知する車両検知手段をさらに備え、 前記カウント手段は、前記車両検知手段により検知され
た期間においてカウントされたパルス数に基づき、前記
車両の車軸数をカウントすることを特徴とする請求項１
に記載された車両の車軸数検知装置。2. The vehicle according to claim 1, further comprising: a vehicle detecting unit configured to detect a period from a head-in of the vehicle to a tail end of the vehicle, wherein the counting unit is configured to determine a period based on a number of pulses counted in the period detected by the vehicle detecting unit. The number of axles of the vehicle is counted.
An axle number detecting device for a vehicle according to claim 1.
ーンが、車両の進行方向に対して直交する方向に縦長の
パターンであることを特徴とする請求項１に記載された
車両の車軸数検知装置。3. The number of axles of a vehicle according to claim 1, wherein the pattern of the spot light projected on the road surface is a vertically long pattern in a direction orthogonal to a traveling direction of the vehicle. Detection device.
る反射帯を設けたことを特徴とする請求項１に記載され
た車両の車軸数検知装置。4. The axle number detecting device for a vehicle according to claim 1, wherein a reflection band for reflecting the spot light is provided on the road surface.
において前記投光手段を作動させることを特徴とする請
求項１に記載された車両の車軸数検知装置。5. The axle number detecting device for a vehicle according to claim 1, wherein the light emitting means is operated during a period detected by the vehicle detecting means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16441399A JP3384362B2 (en) | 1999-06-10 | 1999-06-10 | Vehicle axle number detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16441399A JP3384362B2 (en) | 1999-06-10 | 1999-06-10 | Vehicle axle number detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000353291A true JP2000353291A (en) | 2000-12-19 |
| JP3384362B2 JP3384362B2 (en) | 2003-03-10 |
Family
ID=15792682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16441399A Expired - Fee Related JP3384362B2 (en) | 1999-06-10 | 1999-06-10 | Vehicle axle number detection device |
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| Country | Link |
|---|---|
| JP (1) | JP3384362B2 (en) |
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| WO2002099440A1 (en) * | 2001-06-04 | 2002-12-12 | Ceos Industrial Pty Ltd | A monitoring process and system |
| AU2002302187B2 (en) * | 2001-06-04 | 2006-07-20 | Ceos Industrial Pty Ltd | A monitoring process and system |
| DE102010046586A1 (en) * | 2010-09-25 | 2012-03-29 | Rtb Gmbh & Co. Kg | Apparatus for detecting a traffic jam in particular multi-lane traffic routes, comprises motion sensor connected with traffic routes |
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|---|---|
| JP3384362B2 (en) | 2003-03-10 |
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