JPH01405A - Wheel cross-sectional shape inspection device - Google Patents
Wheel cross-sectional shape inspection deviceInfo
- Publication number
- JPH01405A JPH01405A JP62-154472A JP15447287A JPH01405A JP H01405 A JPH01405 A JP H01405A JP 15447287 A JP15447287 A JP 15447287A JP H01405 A JPH01405 A JP H01405A
- Authority
- JP
- Japan
- Prior art keywords
- wheel
- sectional shape
- cross
- slit light
- image
- 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
- 238000007689 inspection Methods 0.000 title claims description 17
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 description 5
- 238000013500 data storage Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、鉄道の車両基地や工場において、車両の車輪
に発生する異常断面形状車輪発見のための車輪断面形状
検査装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wheel cross-sectional shape inspection device for detecting abnormal cross-sectional shapes occurring in wheels of vehicles in railway depots and factories.
従来の車両基地における車輪断面形状検査は、車両を停
止させて検査者が標準車輪断面形状を有する機械的なゲ
ージを車輪表面に押し当て、予め定められたい（つかの
位置における標準寸法との差を測定するという人手によ
る限界ゲージ方式による方式が実施されている。このよ
うな人手で行う車輪断面形状検査は車輪の下に潜り込ん
で作業をするため大変手間がかかるとともに、測り方に
熟練を要し、測定者によって測定結果がばらつくといっ
た問題があり、この車輪断面形状検査を自動化すること
により検査精度の向上と業務の省力化が望まれている。In conventional wheel cross-sectional shape inspections at depots, the vehicle is stopped and the inspector presses a mechanical gauge with a standard wheel cross-sectional shape onto the wheel surface. A manual limit gauge method has been implemented in which the wheel cross-sectional shape is measured by hand.This manual wheel cross-sectional shape inspection is very time-consuming as it involves getting under the wheel, and requires skill to perform the measurement. However, there is a problem that the measurement results vary depending on the measurer, and it is desired to improve the inspection accuracy and save labor by automating this wheel cross-sectional shape inspection.
前記の問題を解決するために、車両基地の出入り口など
の線路路傍に自動検査装置を設置し、そこを通過する全
ての車輪を一括して検査する方式うく望まれる。前記の
ように通過する車両にたいして地上から車輪断面形状検
査を自動的に行おうとすると、対象が移動するため非接
触で検査を行う事が必要となる。このような場合−殻内
には光学的計測手法の適用が考えられるが、車輪断面形
状検査の場合は、走行車両と抵触しないための条件や車
輪近辺の機器配置の条件等から検査のための光学的磁器
配置が掻めて制約されるため、断面形状の投影を直接前
ることは不可能である。また対象のビデオ映像を利用し
ての計測を考えると、対象が移動することにより映像に
ぶれが生しるため、精度の高い検査を行う事が困難であ
る。In order to solve the above-mentioned problem, it is desirable to install an automatic inspection device near the railway roadside, such as at the entrance/exit of a depot, and to inspect all the wheels passing through it at once. If an attempt is made to automatically inspect the wheel cross-sectional shape of a passing vehicle from the ground as described above, it will be necessary to conduct the inspection in a non-contact manner since the object is moving. In such cases, it is possible to apply optical measurement methods to the inside of the shell, but in the case of wheel cross-sectional shape inspection, it is necessary to take into account the conditions to avoid collision with the running vehicle and the conditions of equipment arrangement near the wheel. Direct projection of the cross-sectional shape is not possible due to the severe limitations of the optical porcelain arrangement. Furthermore, when considering measurement using a video image of the object, it is difficult to conduct highly accurate inspections because the image becomes blurred due to movement of the object.
前記の問題点を解決するために、本発明においては光学
的画像による非接触計測方式を採用し、計測の難しい３
次元曲面の形状を可視化するためにスリット光照射を行
い車輪の断面形状を電子計算機による画像処理可能なス
リット映像に変換し、この映像信号を電子計算機によっ
て演算処理することによって車輪断面形状を算定する。In order to solve the above problems, the present invention adopts a non-contact measurement method using optical images, and
In order to visualize the shape of the dimensional curved surface, slit light is irradiated to convert the cross-sectional shape of the wheel into a slit image that can be processed by a computer, and this video signal is processed by the computer to calculate the cross-sectional shape of the wheel. .
また、走行する車輪の動きに対する映像のぶれを避ける
ためスリット照射の光源をフラッシュライトを用い瞬間
的にスリット光を照射することにより、ぶれの有る走行
車輪画像の上にぶれの無い鮮明なスリット像を得ること
が出来る。In addition, in order to avoid blurring of the image due to the movement of the running wheels, by using a flashlight as the light source for slit irradiation and instantaneously irradiating the slit light, a clear slit image without blur can be created on top of the blurred running wheel image. can be obtained.
以下に本発明の実施例について図にもとすいて説明する
。第１図において、車両基地の検修線などのレールｌ近
傍に、車輪検出器２、フラッシュライトを光源とするス
リット像照射装置３及び工業用ビデオカメラ４を設置す
る。車輪検知器２はレール１の上を走行してくる車輪５
を検知すると車輪進入信号を制御装置６に送る。スリッ
ト光照射ｇＬＷ ３はこの車輪進入検知信号を受けてフ
ラッシュライトを発光させ、スリット像を車輪表面に照
射して車輪表面に車輪断面形状に応じたスリット光映像
７を生しさせる。このスリット光映像７を工業用ビデオ
カメラ４によって撮影し、撮影された電気的映像信号を
Ａ／Ｄ変換して画像処理用の電子計算ｇ１８に入力する
。電子計算機においては車輪断面形状に応じたスリット
映像データに対して、スリット映像抽出やスリット中心
線抽出などの演算処理を施し、更にスリット光源と車輪
と工業用ビデオカメラの幾何学的配置を考慮して車輪断
面形状を算出する。更に必要に応じて正常な標準車輪断
面形状と算出された断面形状を比較することにより異常
断面形状を持つ車輪を発見し印字出力装置９により検査
担当者に異常車輪情報を出力し、さらに画像出力装置１
０に異常車輪のスリット映像を出力する。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a wheel detector 2, a slit image irradiation device 3 using a flashlight as a light source, and an industrial video camera 4 are installed near a rail l such as an inspection/maintenance line in a train depot. Wheel detector 2 detects wheels 5 running on rail 1
When detected, a wheel entry signal is sent to the control device 6. The slit light irradiation gLW 3 emits a flashlight upon receiving this wheel entry detection signal, and irradiates the wheel surface with a slit image to produce a slit light image 7 corresponding to the cross-sectional shape of the wheel on the wheel surface. This slit light image 7 is photographed by an industrial video camera 4, and the photographed electrical video signal is A/D converted and input to an electronic calculator g18 for image processing. An electronic computer performs arithmetic processing such as slit image extraction and slit center line extraction on slit image data corresponding to the cross-sectional shape of the wheel, and also takes into account the geometrical arrangement of the slit light source, wheel, and industrial video camera. Calculate the cross-sectional shape of the wheel. Furthermore, if necessary, a wheel with an abnormal cross-sectional shape is discovered by comparing the normal standard wheel cross-sectional shape with the calculated cross-sectional shape, and the abnormal wheel information is output to the inspector in charge using the print output device 9, and further, an image is output. Device 1
A slit image of the abnormal wheel is output to 0.
比較的高速な検査対象車両に対して、前記のような電子
計算Ｊａ８による処理が間に合わないような場合には、
第２図において、画像データ記憶装置１１を電子計算機
８の前に設置し、工業用ビデオカメラ６からの映像信号
データを画像データ記憶装置１１に一時蓄積し、車両群
通過後に順次電子計算機８に入力して処理を行う方式が
採用される。If the processing by electronic calculation Ja8 as described above cannot be done in time for a relatively high-speed vehicle to be inspected,
In FIG. 2, an image data storage device 11 is installed in front of the computer 8, and video signal data from the industrial video camera 6 is temporarily stored in the image data storage device 11, and is sequentially stored in the computer 8 after a group of vehicles passes. A method is adopted in which information is input and processed.
本発明における計算機処理のやり易さや検査精度は、ス
リット光源３と車輪５と工業用ビデオカメラ４の幾何学
的配置によって支配されるが、第３図において、許され
る空間の範囲で比較的鮮明なスリット映像７が工業用ビ
デオカメラによって撮影され、標準車輪断面形状にたい
して検査対象車輪断面形状の差異が強調されて検出され
る配置をしめす。The ease of computer processing and inspection accuracy in the present invention are controlled by the geometrical arrangement of the slit light source 3, wheel 5, and industrial video camera 4, but in FIG. A slit image 7 is taken by an industrial video camera, and shows an arrangement in which differences in the cross-sectional shape of the wheel to be inspected are emphasized and detected with respect to the standard wheel cross-sectional shape.
本発明の実施により鉄道の車両基地における車輪検査業
務の著しい省力化が図られるとともに、検査精度の向上
に加えて自動検査方式の採用により日常的検査が可能と
なり、適正な車輪踏面管理が行われるために鉄道の安全
性の向上に寄与するものと期待される。By implementing the present invention, significant labor savings in wheel inspection work at railway depots will be achieved, and in addition to improving inspection accuracy, the adoption of an automatic inspection method will enable routine inspections and appropriate wheel tread management. It is expected that this will contribute to improving railway safety.
第１図は本発明の基本構成を示す全体図、第２図は対象
車両の走行が高速である場合の画像データ記憶装置増設
の構成図。第３図は望ましいスリット光源と車輪と工業
用ビデオカメラの相互配置関係を示す。
１−−−レール、２−−−一車輪検知器、３−−・スリ
ット光照射装置、４・−−−〜−−工業用ビデオカメラ
、５−−一−−−検査対象車輪、６−・−制御装置、７
−・・−・−・−車輪表面のスリット映像、８−一一−
−画像処理用電子計算機、９−・−・印字出力装置、１
０−・・・・・−・−画像出力装置、１１−・−・−増
設の画像データ記憶装置。
特許 出願人 財団法人鉄道総合技術研究所１１図FIG. 1 is an overall diagram showing the basic configuration of the present invention, and FIG. 2 is a configuration diagram of an additional image data storage device when the target vehicle is traveling at high speed. FIG. 3 shows the preferred mutual arrangement of the slit light source, wheels, and industrial video camera. 1---Rail, 2---One wheel detector, 3---・Slit light irradiation device, 4・---～---Industrial video camera, 5---1---Wheel to be inspected, 6-・-control device, 7
−・・−・−・−Slit image of wheel surface, 8-11-
- Image processing electronic computer, 9---Print output device, 1
0-...--Image output device, 11--...-Additional image data storage device. Patent Applicant Railway Technology Research Institute Figure 11
Claims (1)
るスリット光照射装置と工業用ビデオカメラを設置し、
線路上を走行する車両の車輪の進入を検知し、前記のフ
ラッシュライト光源によるスリット光照射装置によるス
リット光を車輪表面に照射し、車輪表面上に結像したス
リット光像を前記の工業用ビデオカメラにより撮影し、
該撮影された映像のビデオ信号をＡ／Ｄ変換して電子計
算機に入力し、入力された画像データを電子計算機によ
り処理することにより車輪の幾何学的断面形状を算定し
、標準形状との比較をおこなう事により異常断面形状を
検出する事を特徴とする車輪断面形状検査装置。A wheel entry detector, a slit light irradiation device using a flashlight light source, and an industrial video camera are installed near the tracks.
The entrance of a wheel of a vehicle running on the track is detected, the slit light irradiation device using the flashlight light source irradiates the wheel surface with slit light, and the slit light image formed on the wheel surface is used as the industrial video. Photographed by a camera,
The video signal of the photographed image is A/D converted and input to a computer, and the computer processes the input image data to calculate the geometric cross-sectional shape of the wheel and compare it with the standard shape. A wheel cross-sectional shape inspection device characterized by detecting an abnormal cross-sectional shape by performing the following steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62154472A JPS64405A (en) | 1987-06-23 | 1987-06-23 | Apparatus for inspecting sectional shape of wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62154472A JPS64405A (en) | 1987-06-23 | 1987-06-23 | Apparatus for inspecting sectional shape of wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01405A true JPH01405A (en) | 1989-01-05 |
| JPS64405A JPS64405A (en) | 1989-01-05 |
Family
ID=15584996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62154472A Pending JPS64405A (en) | 1987-06-23 | 1987-06-23 | Apparatus for inspecting sectional shape of wheel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS64405A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5054918A (en) * | 1990-02-02 | 1991-10-08 | Fmc Corporation | Light scanning system for measurement of orientation and physical features of a workpiece |
| EP0617254A1 (en) * | 1993-03-25 | 1994-09-28 | Wilhelm Hegenscheidt Gesellschaft mbH | Method and device for the determination of the thickness of rims or tyres of railway wheels |
| JP5274173B2 (en) * | 2008-09-17 | 2013-08-28 | 株式会社日立製作所 | Vehicle inspection device |
| JP5093130B2 (en) * | 2009-01-23 | 2012-12-05 | 横浜ゴム株式会社 | Tire uneven wear management method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5724486A (en) * | 1980-07-21 | 1982-02-09 | Mitsubishi Electric Corp | Scroll compressor |
-
1987
- 1987-06-23 JP JP62154472A patent/JPS64405A/en active Pending
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