JPH02293667A - Train speed detection system - Google Patents
Train speed detection systemInfo
- Publication number
- JPH02293667A JPH02293667A JP11373889A JP11373889A JPH02293667A JP H02293667 A JPH02293667 A JP H02293667A JP 11373889 A JP11373889 A JP 11373889A JP 11373889 A JP11373889 A JP 11373889A JP H02293667 A JPH02293667 A JP H02293667A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- output
- sensor
- train
- speed sensor
- 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
- 238000001514 detection method Methods 0.000 title claims abstract description 37
- 230000002159 abnormal effect Effects 0.000 claims abstract description 12
- 230000005856 abnormality Effects 0.000 claims abstract description 7
- 230000001133 acceleration Effects 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/021—Measuring and recording of train speed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は列車の速度検出方式に係り、特に、対地速度検
出方式と車輪回転数検出方式の二つの速度センサ出力の
有効な選択方式に関する．〔従来の技術〕
現在列車の速度検出には、主電動機の回転数や、車軸の
回転数を検出する方式が採られている。これらはいずれ
も列車の車輪の回転数を検出し，これを車輪径で定まる
係数で補正し、列車速度として使用している。しかし、
この方式は列車が加速する際や減速する際に車輪の空転
や滑走などがあり必らずしも正く列車速度をあらわさず
，これによる列車の速度制御等に不具合をきたす場合が
あった。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a train speed detection method, and particularly to an effective selection method for two speed sensor outputs: a ground speed detection method and a wheel rotation speed detection method. [Prior Art] Currently, the speed of a train is detected by detecting the rotational speed of the main motor or the rotational speed of the axle. All of these detect the number of revolutions of the train's wheels, correct it with a coefficient determined by the wheel diameter, and use it as the train speed. but,
This system does not always accurately indicate train speed due to wheels spinning or skidding when the train accelerates or decelerates, which can lead to problems with train speed control.
一方，地表面に対する速度、すなわち、対地速度検出方
式は、ドプラ効果等を使用して研究開発がなされている
が、これまで信頼性、経済性の面で車両搭載可能なもの
が、いまだに提供されていない。しかし、「空間フィル
タ式速度センサ」（センサ技術 １９８６ ６月号Ｐ
６２）に示される様に，ようやくその実用化が可能にな
りつつある。On the other hand, research and development has been conducted on speed relative to the ground surface, that is, ground speed detection methods using the Doppler effect, etc., but to date, there have been no systems that can be mounted on vehicles in terms of reliability and economy. Not yet. However, the "spatial filter type speed sensor" (Sensor Technology June 1986 issue P.
As shown in 62), its practical application is finally becoming possible.
しかし、この対地速度センサは、一般に、地表面に対す
る波動信号の反射をみるものであり地表の形状、特に、
鉄橋等の様に橋ゲタの間は空間となっている場所等では
原理的に使用が不可であり、従来形の車輪回転数による
速度検出のバックアップを必要とする。However, this ground speed sensor generally looks at the reflection of wave signals on the ground surface, and is based on the shape of the ground surface.
In principle, it cannot be used in places such as iron bridges where there is a space between the bridge gages, and it requires backup of the conventional speed detection based on the number of wheel rotations.
従来、車輪回転数検出方式の速度センサを使用する場合
は上述のような地形の問題はないが、対地速度センザを
列車の速度検出に使用する場合、地形の問題により検出
不可の部分に対する処理が必要である。Conventionally, when using a speed sensor that detects the number of wheel rotations, there is no problem with the terrain as described above, but when using a ground speed sensor to detect the speed of a train, processing for areas that cannot be detected due to terrain problems is difficult. is necessary.
本発明の目的は上述の使用上の問題点を解消する手段を
提供することにある。An object of the present invention is to provide means for solving the above-mentioned problems in use.
〔課題を解決するための手段〕
上記目的を達成するために、対地速度検出方式には、車
輪回転数検出形の速度センサをバック・アップとして設
けるようにしたものであり，対地速度検出センサの出力
異常時にはこの車輪回転数検出センサ出力に切換えを行
なわせるようにしたものである。[Means for solving the problem] In order to achieve the above purpose, the ground speed detection method is equipped with a wheel rotation speed detection type speed sensor as a backup, and the ground speed detection method is When the output is abnormal, the output of the wheel rotation speed detection sensor is switched.
また，対地速度センサの異常は、センサ出力が異常に急
速に変化する時、あるいは、車輪回転数検出センサの出
力が所定の値以上に出力されている時対地速度センサの
出力が無い時に検出するようにしたものである。Additionally, an abnormality in the ground speed sensor is detected when the sensor output changes abnormally rapidly, or when the output of the wheel rotation speed detection sensor is higher than a predetermined value or there is no output from the ground speed sensor. This is how it was done.
本来列車の加減速度は、最大でも５ ｋｎ／ ｈ ／
ｓ程度を越えないものである。対地速度センサば車両の
車体，もしくは、これに取付けられた装置類に設備され
線路内、もしくは、線路付近の地面との相対速度を検出
する様に取付けられるから特定の場所を除けば列車速度
を、ほぼ，忠実に検出する．従って、特定の検出が困難
な地点でのみ、車輪回転速度センサで代用すればよい。Normally, the acceleration/deceleration speed of a train is at most 5 kn/h/
It does not exceed about s. Ground speed sensors are installed on the vehicle body or on devices attached to it, and are installed to detect the relative speed with the ground within or near the tracks, so except for certain locations, the speed of the train cannot be detected. , almost faithfully detected. Therefore, it is only necessary to use a wheel rotation speed sensor instead at a point where specific detection is difficult.
異常が否かは，列車の加減速度がせいぜい±５ ｋｍ／
ｈ ／ ｓ以内に限られることにより、センサ出カを
監視し、その範囲以内の変化率である事をモニタしてお
けばよい。また、車輪回転速度センサがある程度の大き
さの速度検出出力をしている時，対地速度センサの出力
が速度検出値が０であることも、列車の起動時の空転を
除ｔ′ｊば、あり得ない現象であるから異常と判定でき
る．
したがって、特定条件でのみ車輪回転速度検出のバック
・アップを付加することにより、その弱点ヲカハーシ，
使用することができる．〔実施例〕
第１図に本発明の実施例を示す。To determine whether there is an abnormality or not, the train acceleration/deceleration is at most ±5 km/
By limiting the rate of change to within h/s, it is sufficient to monitor the sensor output to ensure that the rate of change is within that range. Also, when the wheel rotational speed sensor outputs a certain level of speed detection, the output of the ground speed sensor has a speed detection value of 0, which means that if t′j is excluded from the idle speed at the start of the train, Since this is an impossible phenomenon, it can be judged as abnormal. Therefore, by adding a backup for wheel rotation speed detection only under specific conditions, we can solve this weak point.
It can be used. [Example] FIG. 1 shows an example of the present invention.
対地との相対速度を検出する対地速度センサ１と車軸の
回転数を検出する速度センサ２の二つの速度センサを設
ける。二の二つの速度センサの出力は両者の比、すなわ
ち、
速度センサ１の出力／速度センサ２の出ヵを車輪径検出
部３により検出する．これを車輪径記憶部４に記憶させ
る．この記憶された値を速度センサ２の出力に乗シる乗
算部５の出力が選択切換部６に入力される。Two speed sensors are provided: a ground speed sensor 1 that detects the relative speed to the ground and a speed sensor 2 that detects the rotational speed of the axle. Second, the ratio of the outputs of the two speed sensors, that is, the output of the speed sensor 1/the output of the speed sensor 2, is detected by the wheel diameter detection section 3. This is stored in the wheel diameter storage section 4. The output of a multiplier 5 that multiplies the output of the speed sensor 2 by this stored value is input to the selection switching section 6.
速度センサ１と速度センサ２の出力に車輪径記憶部の出
力を乗じたものが選択切換器６により論理和１８の異常
検出出力にしたがって選択され列車の速度検出出力とし
て出力される。The output of the speed sensor 1 and the speed sensor 2 multiplied by the output of the wheel diameter storage section is selected by the selection switch 6 according to the abnormality detection output of the logical sum 18 and output as the train speed detection output.
また、異常検出の手法としては次の二つが行なわれる。Furthermore, the following two methods are used for abnormality detection.
その一つは、選択切換器６により検出された値を一定時
間遅延される遅延部７．７の出力に列車の物理的に可能
な最大加速度により遅延部７の遅延時間の間に上昇する
速度変化値の設定値１１を加算する加算部１３の出力と
また、列車が物理的に可能な最大減速度により遅延部７
の遅延時間の間に下降する速度変化量の設定値１２を減
算する減算部１４の出力と、速度センサ１の出力とを比
較し大小の判断を行う比較部８，９の比較出力により、
速度センサ１の出力が列車の最大加減速度以上の変化を
した時に異常と判断する論理部１ｏより構成される。One of them is to change the value detected by the selection switch 6 to the output of the delay section 7.7 which is delayed for a certain period of time to the speed that increases during the delay time of the delay section 7 according to the physically possible maximum acceleration of the train. The output of the adder 13 that adds the set value 11 of the change value and also the delay unit 7 based on the maximum deceleration that is physically possible for the train.
By comparing the output of the subtraction unit 14 that subtracts the set value 12 of the speed change amount that decreases during the delay time with the output of the speed sensor 1 and determining the magnitude,
It is composed of a logic section 1o that determines an abnormality when the output of the speed sensor 1 changes by more than the maximum acceleration/deceleration of the train.
また、他のーっは速度センサ２の出力が一定値以上にな
っていることを検出する検出部１５の出力が、速度セン
サ２の出力が所定値以上になっていることを示している
時、速度センサ２の出力が０か否かを判定し、０になっ
ている時、異常と判断する判定部１６の出力が一定時間
以上持続することを検出し一定時間持続する時、異常と
判断して出力するタイマ１７より構成される。In addition, when the output of the detection unit 15 that detects that the output of the speed sensor 2 is above a certain value indicates that the output of the speed sensor 2 is above a predetermined value. , determines whether the output of the speed sensor 2 is 0 or not, and when it is 0, it is determined that it is abnormal.It is detected that the output of the determination unit 16 continues for a certain period of time or more, and when it continues for a certain period of time, it is determined that it is abnormal. It consists of a timer 17 that outputs the
本実施例の構成により、速度センサ２、車軸径検出部３
、車輪径記憶部４、乗算部５により車輪の回転速度より
検出された速度検出値が、１の対地速度検出値と同一次
元の値に変換されるとともに、遅延部７、比較部８，９
、論理部１０、設定部１１、加算部１３、減算部１４に
より速度センサ１の出力が列車速度が変化しうる最大減
加速度以上の変化を示しているか，又は，速度センサ２
が所定の値以上を示している時、速度センサ１が速度０
を示している時間が所定の時間接続している時に、速度
センサ１を異常とみなし、速度センサ２の出力が選ばれ
る。又，これ以外の時は速度センサ１の出力が選ばれ選
択切換部６より出方される。With the configuration of this embodiment, the speed sensor 2, the axle diameter detection section 3
, the wheel diameter storage unit 4 and the multiplication unit 5 convert the speed detection value detected from the rotational speed of the wheel into a value of the same dimension as the ground speed detection value 1, and the delay unit 7 and the comparison units 8 and 9
, the logic unit 10, the setting unit 11, the addition unit 13, and the subtraction unit 14 determine whether the output of the speed sensor 1 shows a change greater than the maximum deceleration at which the train speed can change, or the speed sensor 2
indicates a predetermined value or more, the speed sensor 1 indicates the speed is 0.
When the time indicated by is connected for a predetermined time, speed sensor 1 is considered to be abnormal, and the output of speed sensor 2 is selected. In other cases, the output of the speed sensor 1 is selected and output from the selection switching section 6.
本発明によれば、列車の速度検出値として対地速度が検
出されるので、空転，滑走時の異常値により制御が異常
になることがなく、また、対地速度検出が地形等の障害
により検出不能の時にも、車輪の回転数検出によりバッ
ク・アップされ、より安定した速度検出が可能となる。According to the present invention, since the ground speed is detected as the detected speed of the train, the control will not become abnormal due to an abnormal value at the time of slipping or skidding, and the ground speed cannot be detected due to obstacles such as terrain. Even when the speed is off, it is backed up by wheel rotation speed detection, allowing more stable speed detection.
第１図は本発明になる列車速度の検出方式を示す系統図
である。
１・・・対地速度検出速度センサ、２・・・車軸回転速
度検出速度センサ、３・・・車輪径検出部、４・・・車
輪径記憶部、５・・・乗算部．FIG. 1 is a system diagram showing a train speed detection method according to the present invention. DESCRIPTION OF SYMBOLS 1... Ground speed detection speed sensor, 2... Axle rotational speed detection speed sensor, 3... Wheel diameter detection section, 4... Wheel diameter storage section, 5... Multiplication section.
Claims (1)
速を検出する第二の速度センサと前記第一の速度センサ
と前記第二の速度センサの検出値の比をとり、これより
車輪径値を検出し記憶する手段を設け、常時、前記第一
の速度センサの出力を列車の速度として出力し、前記第
一の速度センサの出力に異常がある時、前記第二の速度
センサの出力を車輪径値により補正し、列車速度として
出力することを特徴とする列車速度検出方式。 ２、前記第一の速度センサからの出力が列車の最大加減
速度による列車速度変化分以上に大きい変化を示してい
る時前記第一の速度センサの出力を異常とみなすことを
特徴とする請求項１の列車速度検出方式。 ３、前記第二の速度センサが所定の値以上の速度検出値
を示し、前記第一の速度センサが速度０を示し、これが
所定の時間以上持続する時、前記第一の速度センサを異
常とみなすことを特徴とする請求項１の速度検出方式。[Claims] 1. A first speed sensor that detects ground speed, a second speed sensor that detects wheel rotation speed, and a ratio of detected values of the first speed sensor and the second speed sensor. A means for detecting and storing the wheel diameter value is provided, and the output of the first speed sensor is always outputted as the speed of the train, and when there is an abnormality in the output of the first speed sensor, the A train speed detection method characterized in that the output of the second speed sensor is corrected by a wheel diameter value and output as a train speed. 2. Claim characterized in that when the output from the first speed sensor shows a change larger than the change in train speed due to the maximum acceleration/deceleration of the train, the output from the first speed sensor is regarded as abnormal. 1 train speed detection method. 3. When the second speed sensor shows a speed detection value equal to or higher than a predetermined value and the first speed sensor shows a speed of 0 and this continues for more than a predetermined time, the first speed sensor is determined to be abnormal. 2. The speed detection method according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11373889A JPH02293667A (en) | 1989-05-08 | 1989-05-08 | Train speed detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11373889A JPH02293667A (en) | 1989-05-08 | 1989-05-08 | Train speed detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02293667A true JPH02293667A (en) | 1990-12-04 |
Family
ID=14619883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11373889A Pending JPH02293667A (en) | 1989-05-08 | 1989-05-08 | Train speed detection system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02293667A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013146428A1 (en) * | 2012-03-30 | 2013-10-03 | 日本信号株式会社 | Speed detection device |
| EP2666697A1 (en) * | 2012-05-25 | 2013-11-27 | ALSTOM Transport Technologies | Method for evaluating the diameter of a wheel, and associated evaluation means |
-
1989
- 1989-05-08 JP JP11373889A patent/JPH02293667A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013146428A1 (en) * | 2012-03-30 | 2013-10-03 | 日本信号株式会社 | Speed detection device |
| JP2013213686A (en) * | 2012-03-30 | 2013-10-17 | Nippon Signal Co Ltd:The | Speed detector |
| CN104220880A (en) * | 2012-03-30 | 2014-12-17 | 日本信号株式会社 | Speed detection device |
| EP2666697A1 (en) * | 2012-05-25 | 2013-11-27 | ALSTOM Transport Technologies | Method for evaluating the diameter of a wheel, and associated evaluation means |
| FR2991042A1 (en) * | 2012-05-25 | 2013-11-29 | Alstom Transport Sa | METHOD FOR EVALUATING THE DIAMETER OF A WHEEL, AND ASSEMBLY ASSEMBLY |
| AU2013206015B2 (en) * | 2012-05-25 | 2016-07-07 | Alstom Transport Technologies | Method for evaluating the diameter of a wheel, and associated assembly for performing evaluations |
| RU2629485C2 (en) * | 2012-05-25 | 2017-08-29 | Альстом Транспорт Текнолоджис | Estimation method of wheel diameter and the relevant estimation unit |
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