JPS6361107A - Apparatus for detecting difference in level of sliding roof of car - Google Patents

Apparatus for detecting difference in level of sliding roof of car

Info

Publication number
JPS6361107A
JPS6361107A JP20445686A JP20445686A JPS6361107A JP S6361107 A JPS6361107 A JP S6361107A JP 20445686 A JP20445686 A JP 20445686A JP 20445686 A JP20445686 A JP 20445686A JP S6361107 A JPS6361107 A JP S6361107A
Authority
JP
Japan
Prior art keywords
roof
image
level
difference
sliding roof
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
Application number
JP20445686A
Other languages
Japanese (ja)
Inventor
Toshiharu Sakamoto
俊治 坂本
Shigeo Okamizu
岡水 茂生
Masahiro Touune
東畝 雅宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mazda Motor Corp filed Critical Mazda Motor Corp
Priority to JP20445686A priority Critical patent/JPS6361107A/en
Publication of JPS6361107A publication Critical patent/JPS6361107A/en
Pending legal-status Critical Current

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  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE:To obtain the title apparatus having no possibility damaging the roof of a car body and capable of corresponding even in a mixed flow line, by irradiating a difference-in-level part with the slit beam due to infrared laser and detecting difference in level based on the image of said beam. CONSTITUTION:An infrared laser slit beam generator 1 and a sight sensor 12 are arranged above a car body 10 and laser slit beam is allowed to irradiate the difference-in-level detection part in the roof of the car body 10 at a predetermined angle. By this irradiation, the laser slit beam 13 stretching over both of a roof part 1 and sliding roof part 2 is projected linearily. The respective upper parts of the roof parts 1, 2 generate shift by the distance corresponding to difference in level. The sight sensor 12 picks up the image of said beam 13 and this image is outputted to an image processing means 14. The means 14 processes said image to display the same on a display part 15. By this method, since the difference in level is detected in a non-contact manner, detection is easily performed without generating possibility damaging the roof.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明はスライディングルーフを有する自動車のルーフ
部と上記スライディングルーフ部との段差を非接触的に
検出する装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device for non-contactly detecting a level difference between the roof of an automobile having a sliding roof and the sliding roof.

(従来技術) スライディングルーフを有する自動車の車体組立ライン
では、スライディングルーフを取付けた後、車体のルー
フ部とスライディングルーフ部との間の段差が規格内に
入っているか否かを検査する工程がある。その場合の段
差検出手段として、従来は第5図に示すような接触式の
検査装置が用いられていた。すなわち、第5図において
、1は車体のルーフ部、2はスライディングルーフ部、
3は段差検出装置であり、段差検出装置3は、この装置
3に固定されて下方へ延びる基準ビン4と、この基準ピ
ン4と平行に下方へ延びかつ上下方向に摺動自在に装置
3に設けられた計測ビン5とを備えている。計測ビン5
は下方へばね偏倚されており、基準ビン4の下端をルー
フ部lの頂面に当接させた状態における計測ビン5の基
準ピン4に対する高さ位置を表示器6で表示させること
によって、ルーフ部1とスライディングルーフ部2との
間の段差を検出していた。
(Prior art) On the body assembly line for automobiles with sliding roofs, after the sliding roof is installed, there is a process of inspecting whether the level difference between the roof part of the car body and the sliding roof part is within the standard. . In this case, a contact type inspection device as shown in FIG. 5 has conventionally been used as a step detection means. That is, in FIG. 5, 1 is the roof part of the vehicle body, 2 is the sliding roof part,
3 is a level difference detection device, and the level difference detection device 3 includes a reference pin 4 fixed to the device 3 and extending downward, and a reference pin 4 extending downward parallel to the reference pin 4 and slidable in the vertical direction. A measuring bin 5 is provided. Measuring bin 5
is biased downward by a spring, and by displaying on the display 6 the height position of the measurement bin 5 with respect to the reference pin 4 in a state where the lower end of the reference bin 4 is in contact with the top surface of the roof part l, the roof The difference in level between part 1 and sliding roof part 2 was detected.

しかしながら、第5図に示すような従来の段差検出装置
3はこの装置3に固定された基準ピン4の下端をルーフ
部4に当接させる構成であるため、ルーフ部lを傷つけ
るおそれがあった。また、ルーフ部1とスライディング
ルーフ部2との間の前後左右の段差を計測することが必
要なため、四角いフレームに4個の段差検出装置3を取
付けた冶具を用い、この治具を車体のルーフに!!置す
ることにより、前後左右の段差が一度に検査できるよう
にしている。したがって、この治具は1車種にしか対応
できないため、車種の異なる車体が混在する混流ライン
では、治具を取換えなければならない面倒があった。
However, since the conventional level difference detection device 3 as shown in FIG. 5 has a structure in which the lower end of a reference pin 4 fixed to this device 3 is brought into contact with the roof portion 4, there is a risk of damaging the roof portion l. . In addition, since it is necessary to measure the level difference between the roof part 1 and the sliding roof part 2 in the front, rear, left and right directions, a jig with four level difference detection devices 3 attached to a square frame is used. On the roof! ! This allows inspection of steps in the front, back, left, and right directions at the same time. Therefore, since this jig can only be used for one type of vehicle, in a mixed flow line where bodies of different vehicle types coexist, the jig must be replaced, which is a hassle.

(発明の目的) 上述の事情に鑑み、本発明は車体のルーフを傷つけるお
それのない、かつγ昆流ラインにおいても対応できる非
接触式のスライディングルーフ段差検出装置を提供する
ことを目的とする。
(Objective of the Invention) In view of the above-mentioned circumstances, an object of the present invention is to provide a non-contact type sliding roof level difference detection device that does not cause damage to the roof of a vehicle body and can also be used on gamma current lines.

(発明の構成) 本発明によるスライディングルーフ段差検出装置は、赤
外線レーザによるスリー/ ト光を車体のルーフ部とス
ライディングルーフ部とにまたがって照射するレーザス
リット光照射手段と、上記レーザスリy)光Φ照射部分
を撮像する視覚センサと、この視覚センサからレーザス
リット光の照射部分の画像を取込んで2値化し、この2
値化された画像におけるレーザスリット光に対応した線
のズレ量の検出にもとづいてルーフ部とスライディング
ルーフ部との間の段差を検出する画像処理手段とを備え
ていることを特徴とする。
(Structure of the Invention) The sliding roof level difference detection device according to the present invention includes a laser slit light irradiation means that irradiates three/two lights from an infrared laser across the roof part of the vehicle body and the sliding roof part, and the above-mentioned laser slit light Φ. A visual sensor captures an image of the irradiated area, and an image of the irradiated area of the laser slit light is captured from this visual sensor and binarized, and these two
The present invention is characterized by comprising an image processing means for detecting a level difference between the roof part and the sliding roof part based on the detection of the amount of deviation of the line corresponding to the laser slit light in the digitized image.

(発明の効果) 本発明による段差検出装置においては、段差部分に赤外
線レーザによるスリット光を照射し、この照射されたレ
ーザスリット光の画像によって段差を検出するようにな
されているから、従来のこの種の装置のようにルーフを
傷つけるおそれがなく、段差を容易に検出することがで
きる。また混流ラインにおける車種の変更に対して、レ
ーザスリット光発生器および視覚センサの角度を変える
だけで容易に対応することができる利点がある。
(Effects of the Invention) In the level difference detection device according to the present invention, a slit light from an infrared laser is irradiated onto the level difference part, and the level difference is detected by the image of the irradiated laser slit light. Unlike other types of devices, there is no risk of damaging the roof, and differences in level can be easily detected. Another advantage is that changes in vehicle types on the mixed flow line can be easily handled by simply changing the angles of the laser slit light generator and the visual sensor.

(実 施 例) 以下第1図〜第4図を参照して、本発明の実施例につい
て詳細に説明する。
(Example) Examples of the present invention will be described in detail below with reference to FIGS. 1 to 4.

第1図および第2図において、車体10の上方に赤外線
レーザスリット光発生器11およびテレビカメラのよう
な視覚センサ12が設置されており、車体10のルーフ
における段差検出部に対してレーザスリット光が所定の
投射角度で斜め上方から照射される。この照射により、
車体10のルーフ上には、第3図に示すように、ルーフ
部1とスライディングルーフ部2とにまたがったレーザ
スリット光13が線状に映出される。ルーフ上に映出さ
れたレーザスリット光13は、スライディングルーフ部
2上の直線部分13aとルーフ部1上の直線部分13b
とよりなり、両立線部分13a、13bはルーフ部1と
スライディングルーフ部2との間の段差に対応した距離
だけずれを生じている。視覚センサ12はこのレーザス
リット光13を撮像してこの画像を画像処理手段14に
出力すみ− 画像処理手段14は視覚センサ12からの画像を取込ん
で画像処理を行なって、表示器15に表示するが、この
画像処理手段14が実行する画像処理フローおよび作業
者の行なう作業のフローが第4図に示されている。すな
わち、まず画像を取込み(ステップS1)、次にこの画
像を所定レベルのしきい値で2値化する(ステップ52
)0次にこの2値化された画像におけるレーザスリット
光13の両立線部分13a、13bに対応する線のずれ
量ΔXを計算しくステップS3)、ΔXの値からルーフ
部1とスライディングルーフ部2との間の段差を算出し
くステップS4)、この段差を表示器15に表示する(
ステップ55)0作業者はこの表示によって上記段差が
規格内にあるか否かを判定しくステップS6)、段差が
規格内であれば検査を終了し、規格外であれば、スライ
ディングルーフの取付調整を行なった後(ステップS7
)、ステップ31〜ステツプS6に従う段差検出を反復
し、調整により段差が規格内に入ったことを確認する。
In FIGS. 1 and 2, an infrared laser slit light generator 11 and a visual sensor 12 such as a television camera are installed above a vehicle body 10, and a laser slit light is directed toward a level difference detection portion on the roof of the vehicle body 10. is irradiated diagonally from above at a predetermined projection angle. With this irradiation,
On the roof of the vehicle body 10, as shown in FIG. 3, laser slit light 13 is projected linearly across the roof part 1 and the sliding roof part 2. The laser slit light 13 projected onto the roof has a straight line portion 13a on the sliding roof part 2 and a straight line part 13b on the roof part 1.
Therefore, the compatibility line portions 13a and 13b are shifted by a distance corresponding to the step difference between the roof portion 1 and the sliding roof portion 2. The visual sensor 12 images this laser slit light 13 and outputs this image to the image processing means 14. The image processing means 14 takes in the image from the visual sensor 12, performs image processing, and displays it on the display 15. However, the image processing flow executed by the image processing means 14 and the flow of work performed by the operator are shown in FIG. That is, first, an image is captured (step S1), and then this image is binarized using a threshold of a predetermined level (step S52).
) Next, calculate the deviation amount ΔX of the line corresponding to the compatible line portions 13a and 13b of the laser slit light 13 in this binarized image.Step S3) From the value of ΔX, the roof part 1 and the sliding roof part 2 are calculated. Step S4) to calculate the step difference between
Step 55) The operator determines whether or not the level difference is within the standard based on this display.Step S6) If the level difference is within the standard, the inspection is completed, and if it is outside the standard, the installation adjustment of the sliding roof is performed. After performing (step S7
), the level difference detection according to steps 31 to S6 is repeated, and it is confirmed that the level difference is within the standard by adjustment.

以上の説明で明らかなように、本発明による段差検出装
置は非接触式であるから、スライディングルーフの段差
の検出がルーフを傷つけるおそれなしに容易に行なうこ
とができる。
As is clear from the above description, since the level difference detection device according to the present invention is of a non-contact type, the level difference of the sliding roof can be easily detected without fear of damaging the roof.

【図面の簡単な説明】[Brief explanation of drawings]

第1図および第2図は本発明による段差検出装置の説明
図、第3図はレーザスリット光の説明図、第4図はフロ
ーチャート、第5図は従来の段差検出装置の説明図であ
る。 1・−・ルーフ部 2−・・スライディングルーフ部 10・−車体
1 and 2 are explanatory diagrams of a step detection device according to the present invention, FIG. 3 is an explanatory diagram of laser slit light, FIG. 4 is a flowchart, and FIG. 5 is an explanatory diagram of a conventional step detection device. 1.--Roof part 2-..Sliding roof part 10.--Vehicle body

Claims (1)

【特許請求の範囲】 赤外線レーザによるスリット光を車体のルーフ部とスラ
イディングルーフ部とにまたがって照射するレーザスリ
ット光照射手段と、 上記レーザスリット光の照射部分を撮像する視覚センサ
と、 この視覚センサから上記レーザスリット光の照射部分の
画像を取込んで2値化し、この2値化された画像におけ
る上記レーザスリット光に対応した線のずれ量の検出に
もとづいて上記ルーフ部と上記スライディングルーフ部
との間の段差を検出する画像処理手段とを具備すること
を特徴とする自動車のスライディングルーフ段差検出装
置。
[Scope of Claims] Laser slit light irradiation means for irradiating slit light from an infrared laser across a roof portion and a sliding roof portion of a vehicle body; a visual sensor that images the portion irradiated with the laser slit light; and this visual sensor. An image of the portion irradiated with the laser slit light is captured and binarized, and based on the detection of the amount of deviation of the line corresponding to the laser slit light in the binarized image, the roof portion and the sliding roof portion are determined. 1. A sliding roof level difference detection device for an automobile, comprising an image processing means for detecting a level difference between the sliding roof and the roof.
JP20445686A 1986-08-30 1986-08-30 Apparatus for detecting difference in level of sliding roof of car Pending JPS6361107A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20445686A JPS6361107A (en) 1986-08-30 1986-08-30 Apparatus for detecting difference in level of sliding roof of car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20445686A JPS6361107A (en) 1986-08-30 1986-08-30 Apparatus for detecting difference in level of sliding roof of car

Publications (1)

Publication Number Publication Date
JPS6361107A true JPS6361107A (en) 1988-03-17

Family

ID=16490833

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20445686A Pending JPS6361107A (en) 1986-08-30 1986-08-30 Apparatus for detecting difference in level of sliding roof of car

Country Status (1)

Country Link
JP (1) JPS6361107A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5608817A (en) * 1993-11-18 1997-03-04 Honda Giken Kogyo Kabushiki Kaisha Optical measuring method
WO2010070383A1 (en) * 2008-12-16 2010-06-24 Sabanci Universitesi A 3d scanner

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57137801A (en) * 1981-02-20 1982-08-25 Nippon Kokan Kk <Nkk> Level difference detection for blank material end in production of electric welded pipe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57137801A (en) * 1981-02-20 1982-08-25 Nippon Kokan Kk <Nkk> Level difference detection for blank material end in production of electric welded pipe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5608817A (en) * 1993-11-18 1997-03-04 Honda Giken Kogyo Kabushiki Kaisha Optical measuring method
WO2010070383A1 (en) * 2008-12-16 2010-06-24 Sabanci Universitesi A 3d scanner
US8629400B2 (en) 2008-12-16 2014-01-14 Sabanci Universitesi 3D scanner

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