JPH05340739A - Orientation inspector of spring with unequal pitch - Google Patents
Orientation inspector of spring with unequal pitchInfo
- Publication number
- JPH05340739A JPH05340739A JP14705592A JP14705592A JPH05340739A JP H05340739 A JPH05340739 A JP H05340739A JP 14705592 A JP14705592 A JP 14705592A JP 14705592 A JP14705592 A JP 14705592A JP H05340739 A JPH05340739 A JP H05340739A
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- Prior art keywords
- spring
- orientation
- unequal pitch
- pitch
- 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.)
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Links
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- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は不等ピッチスプリングの
配向検知装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an orientation detecting device for unequal pitch springs.
【０００２】[0002]
【従来の技術】不等ピッチスプリング（以下、スプリン
グという）とは、コイルの中心線方向におけるコイル巻
線のピッチが均等でないものをいい、特に図４に示すよ
うに、スプリング１の両端部におけるピッチが一端部１
ｂで大きく（巻線２の中心間ピッチがｎ）、他端部１ａ
で小さい（巻線中心間ピッチがｍ）ものをいう。このよ
うなスプリング１は、例えば自動車エンジンのバルブ開
閉機構にサージング対策等のため採用され、コイルピッ
チが密の端部１ａをヘッド側に、疎の端部１ｂをカム側
にして装着される。2. Description of the Related Art An unequal pitch spring (hereinafter referred to as a spring) means one in which the pitches of coil windings in the direction of the center line of the coil are not uniform, and in particular, as shown in FIG. Pitch at one end 1
b is large (pitch between the centers of the windings 2 is n), the other end 1a
Is small (the pitch between winding centers is m). Such a spring 1 is used, for example, in a valve opening / closing mechanism of an automobile engine as a countermeasure against surging, and is mounted with the end portion 1a having a dense coil pitch on the head side and the sparse end portion 1b on the cam side.
【０００３】自動車のエンジンの組立てラインでは、前
記スプリング１が所定の配向でパーツフィーダにて連続
的にスプリング取付け装置に供給される。このパーツフ
ィーダ内にはスプリングの配向を検知する装置と、配向
が逆のものを反転する装置が組み込まれている。In an automobile engine assembly line, the spring 1 is continuously supplied to a spring mounting device in a predetermined orientation by a parts feeder. In this parts feeder, a device for detecting the orientation of the spring and a device for reversing the orientation of the spring are incorporated.
【０００４】スプリングの配向を検知する装置としては
光学的手段を使用したものが一般的であり、例えば図５
および６に示すものが知られている。図５の装置はスプ
リング１の疎又は密のいずれか一端部、例えば巻線ピッ
チｍ（密）の端部１ａのスプリング巻線２に予めペンキ
などで手作業により識別マーク２０を付けておき、この
識別マーク２０をカメラ２１を使った画像処理で自動識
別して、スプリング１の向きを検知する。つまり、カメ
ラ２１でスプリング１の全体を撮像して得た画像から、
スプリング１の両端部のいずれに識別マーク２０の像が
在るかを判定して、スプリング１の向きが正しいか否か
を判定する。なおカメラ２１を使用せず作業員の目視判
断でスプリングの配向を確認する方法も一部で行われて
いる。As a device for detecting the orientation of the spring, a device using an optical means is generally used. For example, FIG.
And those shown in 6 are known. In the apparatus shown in FIG. 5, the identification mark 20 is manually attached in advance to the spring winding 2 of one end of the spring 1 which is either sparse or dense, for example, the end 1a having a winding pitch m (dense) by hand. The identification mark 20 is automatically identified by image processing using the camera 21, and the orientation of the spring 1 is detected. That is, from the image obtained by imaging the entire spring 1 with the camera 21,
It is determined whether the image of the identification mark 20 is present on both ends of the spring 1 to determine whether or not the orientation of the spring 1 is correct. Note that a method of visually confirming the orientation of the spring without using the camera 21 is also performed in some cases.
【０００５】図６の装置は、スプリング１の片側に照明
器具２２を配置し、反対側にスプリング１の両端部を通
過した光を受光する一対の受光素子２３、２４を配置
し、スプリング１の両端部１ａ、１ｂを通過した照明器
具２２の通過光量の差に基づきスプリング１の向きを検
知する。つまり、スプリング１の小なる巻線ピッチｍの
端部１ａの通過光量が、大なる巻線ピッチｎの端部１ｂ
の通過光量より少ないので、その通過光量の差からスプ
リング１の向きが判定される。In the device of FIG. 6, a lighting device 22 is arranged on one side of the spring 1, and a pair of light receiving elements 23 and 24 for receiving light passing through both ends of the spring 1 are arranged on the opposite side. The direction of the spring 1 is detected based on the difference in the amount of light passing through the luminaire 22 that has passed through both ends 1a and 1b. That is, the amount of light passing through the end portion 1a of the spring 1 having a smaller winding pitch m is larger than that of the end portion 1b having a large winding pitch n.
Since the amount of light passing therethrough is less than that of the spring 1, the direction of the spring 1 is determined from the difference in the amount of light passing therethrough.
【０００６】[0006]
【発明が解決しようとする課題】従来のスプリングの配
向検知装置は次のような問題を含んでいた。The conventional spring orientation detecting device has the following problems.
【０００７】（図５の装置の場合） （ａ）スプリングの片端部に識別マークを付ける作業工
程および設備が必要であり、スプリングの組付けコスト
が高くなる。 （ｂ）スプリングの小ピッチ側または大ピッチ側の決め
られた片端部に識別マークを付ける必要があるが、誤っ
て反対側の端部に識別マークが付けられるとスプリング
の配向が誤判定されるから信頼性に欠ける。 （ｃ）スプリングをパーツフィーダなどで配向検知装置
に搬送する際に、スプリングに付けた識別マークが擦れ
たり汚れたりして、カメラで識別するのが困難となり、
スプリングの配向が誤判定されることがある。(In the case of the apparatus of FIG. 5) (a) A work process and equipment for attaching an identification mark to one end of the spring are required, and the cost of assembling the spring increases. (B) It is necessary to attach an identification mark to one end of the spring on the small pitch side or the large pitch side, but if the identification mark is mistakenly attached to the opposite end, the orientation of the spring is erroneously determined. To be unreliable. (C) When the spring is conveyed to the orientation detection device by a parts feeder or the like, the identification mark attached to the spring is rubbed or soiled, which makes it difficult to identify it with the camera.
The orientation of the spring may be misjudged.
【０００８】（図６装置の場合） （ａ）スプリングの巻線の線径、ピッチおよび巻数など
は品種毎に異なるから、スプリングの配向を決める両端
部の通過光量とその差の数値条件が品種毎に異なる。そ
のため、組付けスプリングの品種を変更する毎に、配向
判定のための面倒な数値条件設定が必要であって、品種
切替えの作業性が悪い。 （ｂ）照明器具と受光素子の間に配置されるスプリング
が、傾くなどして位置ずれを起こすと、スプリングの両
端部での通過光量が増減変動し、スプリングの配向が判
定不能となることがあり、場合によっては誤判定となる
など信頼性に欠ける。(In the case of the apparatus shown in FIG. 6) (a) Since the wire diameter, pitch and number of turns of the spring winding differ depending on the product type, the quantity of light passing through both ends that determines the orientation of the spring and the numerical conditions for the difference are the product types. Different for each. Therefore, every time the type of the assembly spring is changed, it is necessary to set a troublesome numerical condition for determining the orientation, and the workability of changing the type is poor. (B) If the spring disposed between the lighting fixture and the light receiving element is misaligned due to tilting or the like, the amount of light passing through at both ends of the spring may fluctuate, and the orientation of the spring may not be determined. There is a lack of reliability such as an erroneous determination in some cases.
【０００９】[0009]
【課題を解決するための手段】本発明は、不等ピッチス
プリングの少なくとも両端部に、コイル中心線方向と平
行なスリット光を照射する照明部と、前記照明部からの
光を照射された不等ピッチスプリングの両端部の直線状
に並ぶ被照明部分からの反射光を捉えて撮像する撮像部
と、前記撮像部で得られた画像から、不等ピッチスプリ
ングの両端における隣接する被照明部分の相互間隔を、
それぞれ演算して大小関係を比較し、その比較結果から
不等ピッチスプリングの向きを判定する演算判定部と、
を具備してなる不等ピッチスプリングの配向検知装置に
て上記問題点を解決する。According to the present invention, at least both ends of an unequal pitch spring are illuminated with a slit light which is parallel to the coil center line direction, and an illumination portion which is irradiated with light from the illumination part. From the image obtained by the image capturing unit that captures and captures the reflected light from the linearly illuminated portions of both ends of the equal pitch spring, and from the images obtained by the image capturing unit, the adjacent illuminated portions at both ends of the unequal pitch spring The mutual spacing,
A calculation determination unit that determines the orientations of the unequal pitch springs based on the comparison results by comparing the magnitude relationships by performing respective calculations,
The above problem is solved by an orientation detecting device for an unequal pitch spring, which is provided with.
【００１０】[0010]
【作用】照明部のスリット光で照射されたスプリングの
両端の被照明部分は、スプリングの中心線方向と平行な
直線上に並び、この被照明部分からの反射光は、撮像部
内でスプリング巻線のピッチに対応した間隔で一直線状
に並ぶ複数の点状画像となり、スプリングの両端部にお
ける隣接する点状画像の相互間隔が、演算判定部で演算
され、大小関係が比較され、その比較結果からスプリン
グの配向が検知、判定される。スプリングの両端部にお
ける巻線ピッチの大小を比較して配向を検知する方式な
ので、スプリングに品種変更があっても数値条件を変更
すること無く正確なスプリングの配向検知が実行され
る。The illuminated parts at both ends of the spring illuminated by the slit light of the illumination part are aligned on a straight line parallel to the center line direction of the spring, and the reflected light from the illuminated part is spring-wound in the imaging part. It becomes a plurality of dot-like images lined up in a straight line at intervals corresponding to the pitch of, and the mutual intervals of adjacent dot-like images at both ends of the spring are calculated by the calculation determining unit, and the magnitude relationship is compared, and from the comparison result, The orientation of the spring is detected and determined. Since the orientation is detected by comparing the size of the winding pitch at both ends of the spring, accurate orientation detection of the spring can be performed without changing the numerical conditions even if the type of spring changes.
【００１１】[0011]
【実施例】以下、本発明実施例を図１〜３を参照して説
明する。EXAMPLES Examples of the present invention will be described below with reference to FIGS.
【００１２】図１は不等ピッチスプリングの配向検知装
置を示す。この装置は、所定位置に横置きされたスプリ
ング１に対し、その全長に亙ってスプリング１の中心線
と平行なレーザースリット光５を照射する照明部４と、
スプリング１からのレーザー反射光５'を撮像する撮像
部６と、撮像部６で結像した画像からスプリング１の両
端部の巻線ピッチの大小を判定して配向を検知する演算
判定部１０を備える。FIG. 1 shows an orientation detecting device for unequal pitch springs. This device includes a lighting unit 4 for irradiating a spring 1 horizontally placed at a predetermined position with a laser slit light 5 parallel to the center line of the spring 1 over its entire length,
An image pickup unit 6 for picking up the laser reflected light 5 ′ from the spring 1 and an operation judgment unit 10 for judging the size of the winding pitch at both ends of the spring 1 from the image formed by the image pickup unit 6 to detect the orientation. Prepare
【００１３】照明部４はスプリング１に対して斜め上方
からレーザースリット光５を照射する。照射位置は、ス
プリング１の位置が図１（Ａ）のＸ方向およびＹ方向に
ずれても確実に反射光が得られる範囲Ｌを実験的に求
め、範囲Ｌのほぼ中央が照射されるように設定する。な
お、図１（Ｂ）のＹ方向のずれについては、レーザース
リット光の幅Ｓを広くとることで対応している。レーザ
ースリット光５によって、スプリング１の中心線方向の
全長に亙って、図２（Ａ）に示すような被照明部分３が
スプリング１の外周面に形成される。この被照明部分３
は、スプリング１の巻線２ピッチに対応した間隔で一直
線状に並んだ点状光源となる。The illumination section 4 irradiates the spring 1 with laser slit light 5 obliquely from above. The irradiation position is experimentally determined to be a range L in which the reflected light can be reliably obtained even if the position of the spring 1 shifts in the X direction and the Y direction of FIG. 1A, and the center of the range L is irradiated. Set. The deviation in the Y direction in FIG. 1B is dealt with by increasing the width S of the laser slit light. The laser slit light 5 forms an illuminated portion 3 on the outer peripheral surface of the spring 1 as shown in FIG. 2A over the entire length of the spring 1 in the center line direction. This illuminated part 3
Is a point light source arranged in a straight line at an interval corresponding to the pitch of the winding 2 of the spring 1.
【００１４】撮像部６はフィルタ７、レンズ８およびカ
メラ９を備え、スプリング１の真上位置に配置される。
フィルタ７はスプリング１からのレーザー反射光５'だ
けを透過する光学フィルタである。フィルタ７をパスし
たレーザー反射光５'は、レンズ８を通過してカメラ９
に入射する。カメラ９はレーザー反射光５'からスプリ
ング１の被照明部分３を撮像して、図２（Ｂ）に示すよ
うな点状の画像１１の画像信号を演算判定部１０に出力
する。The image pickup section 6 is provided with a filter 7, a lens 8 and a camera 9, and is arranged right above the spring 1.
The filter 7 is an optical filter that transmits only the laser reflected light 5 ′ from the spring 1. The laser reflected light 5 ′ passing through the filter 7 passes through the lens 8 and the camera 9
Incident on. The camera 9 images the illuminated portion 3 of the spring 1 from the laser reflected light 5 ′ and outputs the image signal of the dot-shaped image 11 as shown in FIG.
【００１５】撮像部６に設けたフィルタ７は、レーザー
反射光５'以外のスプリング１からの外乱光をカットす
る。したがって、撮像部６で得られた画像１１は、スプ
リング１の被照明部分３の点状画像１１だけとなり、後
の画像処理を容易にし、画像処理の正確性が増す。The filter 7 provided in the image pickup section 6 cuts off the disturbance light from the spring 1 other than the laser reflected light 5 '. Therefore, the image 11 obtained by the imaging unit 6 is only the dot image 11 of the illuminated portion 3 of the spring 1, which facilitates the subsequent image processing and increases the accuracy of the image processing.
【００１６】演算判定部１０は、撮像部６からの画像信
号を例えば図３に示すフローチャートの如く演算処理し
て、スプリング１の配向を判定する。いま、スプリング
１の小なる巻線ピッチ側の端部１ａの最外端から１番目
の巻線ピッチをＰ1、２番目の巻線ピッチをＰ2とし、反
対の大なる巻線ピッチ側の端部１ｂの最外端から１番目
の巻線ピッチをＰ4、２番目の巻線ピッチをＰ3とする
と、演算判定部１０は次の画像処理を行う。なお、巻線
ピッチＰ1〜Ｐ4は、スプリング巻線２のレーザスリット
光５による被照明部分３でのピッチである。The arithmetic decision unit 10 arithmetically processes the image signal from the image pickup unit 6 as shown in the flowchart of FIG. 3, for example, and decides the orientation of the spring 1. Now, the first winding pitch from the outermost end of the end portion 1a on the smaller winding pitch side of the spring 1 is P1, the second winding pitch is P2, and the opposite end portion on the larger winding pitch side. Assuming that the first winding pitch from the outermost end of 1b is P4 and the second winding pitch is P3, the operation determination unit 10 performs the next image processing. The winding pitches P1 to P4 are pitches in the illuminated portion 3 by the laser slit light 5 of the spring winding 2.
【００１７】演算判定部１０は撮像部６から画像入力が
行われると、まず、一直線状に並ぶ複数の点状画像１１
のラベリング（番号付け）を行う。次に、ラベリングさ
れた各画像１１の重心座標の計算を行う。つまり、点状
の画像１１の形状、面積は不安定であることから、各画
像１１の中心点の座標を重心法にて計算し、図２の
（Ｃ）に示すような重心座標１２を算出する。この重心
座標１２は、スプリング１のスプリング巻線２の各被照
明部分３での中心点に相当する。When an image is input from the image pickup unit 6, the calculation determination unit 10 firstly makes a plurality of dot images 11 arranged in a straight line.
Labeling (numbering). Next, the barycentric coordinates of each labeled image 11 are calculated. That is, since the shape and area of the dot-shaped image 11 are unstable, the coordinates of the center point of each image 11 are calculated by the centroid method, and the centroid coordinates 12 as shown in FIG. 2C are calculated. To do. The barycentric coordinate 12 corresponds to the center point of each of the illuminated portions 3 of the spring winding 2 of the spring 1.
【００１８】演算判定部１０はその後、隣接する重心座
標１２の距離を演算して、スプリング１の巻線ピッチ計
算を行い、スプリング１の各巻線ピッチＰ1〜Ｐ4を算出
する。この計算は、少なくともスプリング１の両端部１
ａ、１ｂの２番目の巻線ピッチＰ2、Ｐ3の２箇所を含め
て行われる。そして、２番目の巻線ピッチＰ2、Ｐ3の大
小を比較し、その比較結果からスプリング１の配向が判
定される。スプリング１の両端部から２番目の巻線ピッ
チＰ2、Ｐ3を抽出するのは、スプリング１の巻線２の両
端では、巻終わりのためピッチが減少している箇所があ
るためである。After that, the calculation determining section 10 calculates the distance between the adjacent barycentric coordinates 12, calculates the winding pitch of the spring 1, and calculates each winding pitch P1 to P4 of the spring 1. This calculation is for at least one end 1 of spring 1.
It is performed including the two positions of the second winding pitches P2 and P3 of a and 1b. Then, the magnitudes of the second winding pitches P2 and P3 are compared, and the orientation of the spring 1 is determined from the comparison result. The reason why the second winding pitches P2 and P3 are extracted from both ends of the spring 1 is that there is a portion where the pitch decreases at both ends of the winding 2 of the spring 1 due to the end of winding.
【００１９】スプリング１の両端部１ａ、１ｂにおける
２番目の巻線ピッチＰ2、Ｐ3の実測値の大小比較は、ス
プリング１の品種に応じた数値条件設定無しに実行され
る。したがって、スプリング１の品種が変更されても、
本発明装置はそのまま使用できる。The comparison of the measured values of the second winding pitches P2 and P3 at both ends 1a and 1b of the spring 1 is performed without setting the numerical conditions according to the type of the spring 1. Therefore, even if the type of spring 1 is changed,
The device of the present invention can be used as it is.
【００２０】[0020]
【発明の効果】本発明は、不等ピッチスプリングの両端
部に照射したスリット光からの反射光により両端部の巻
線ピッチの演算および大小比較を行なってスプリングの
配向を検知するので、識別マークによる配向検知方式に
比べてマーキングする手間が要らず、またスプリング両
端部での通過光量差により配向を検知する方式に比べ
て、スプリングの位置決めずれによる誤判定のおそれが
なく、またスプリング両端部での巻線間隔の大小関係に
より配向を検知するので、組付けスプリングの品種変更
に伴う検知条件の設定変更の必要性もないから、ロット
変更に容易且つ迅速に対応可能である。According to the present invention, the orientation of the spring is detected by calculating and comparing the winding pitches of both ends of the unequal pitch spring with the reflected light from the slit light applied to the both ends of the unequal pitch spring. Compared to the orientation detection method, which requires less labor for marking, there is no risk of misjudgment due to the spring misalignment compared to the method that detects the orientation by the difference in the amount of light passing through at both ends of the spring. Since the orientation is detected based on the magnitude relation of the winding intervals of No. 1, there is no need to change the setting of the detection condition accompanying the change of the type of the assembly spring, so that the lot change can be easily and promptly dealt with.
【図１】（Ａ）は本発明の一実施例を示す正面図、
（Ｂ）は平面図。FIG. 1A is a front view showing an embodiment of the present invention,
(B) is a plan view.
【図２】図１の装置によるスプリング配向判定のための
画像処理動作を説明するための図で、（Ａ）はスプリン
グの平面図、（Ｂ）はスプリングの照明された部分の画
像図、（Ｃ）は重心法による画像処理後の画像図。2A and 2B are views for explaining an image processing operation for determining a spring orientation by the apparatus of FIG. 1, in which FIG. 2A is a plan view of a spring, and FIG. 2B is an image view of an illuminated portion of the spring; C) is an image diagram after image processing by the centroid method.
【図３】図１の装置によるスプリング配向判定の画像処
理動作順序例を示すフローチャート。3 is a flowchart showing an example of an image processing operation sequence for determining a spring orientation by the apparatus of FIG.
【図４】不等ピッチスプリングの一例を示す側面図。FIG. 4 is a side view showing an example of an unequal pitch spring.
【図５】従来のスプリング配向検知装置の概略を示す側
面図。FIG. 5 is a side view schematically showing a conventional spring orientation detecting device.
【図６】他の従来のスプリング配向検知装置の概略を示
す側面図。FIG. 6 is a side view schematically showing another conventional spring orientation detecting device.
１ スプリング ２ スプリング巻線 ３ 被照明部分 ４ 照明部 ５ レーザースリット光 ５' レーザー反射光 ６ 撮像部 ７ フィルタ １０ 演算判定部 1 Spring 2 Spring Winding 3 Illuminated Part 4 Illumination Part 5 Laser Slit Light 5'Laser Reflected Light 6 Imaging Part 7 Filter 10 Calculation Judgment Part
Claims (1)
端部におけるコイル巻線のピッチが大小に相違する不等
ピッチスプリングの配向を検知する装置において、 不等ピッチスプリングの少なくとも両端部に、コイル中
心線方向と平行なスリット光を照射する照明部と、 前記照明部からの光を照射された不等ピッチスプリング
の両端部の直線状に並ぶ被照明部分からの反射光を捉え
て撮像する撮像部と、 前記撮像部で得られた画像から、不等ピッチスプリング
の両端における隣接する被照明部分の相互間隔を、それ
ぞれ演算して大小関係を比較し、その比較結果から不等
ピッチスプリングの向きを判定する演算判定部とを具備
してなる不等ピッチスプリングの配向検知装置。1. A device for detecting the orientation of an unequal pitch spring in which the pitches of coil windings at both ends in the center line direction of the unequal pitch spring are different from each other, wherein a coil is provided at least at both ends of the unequal pitch spring. An illumination unit that emits slit light parallel to the centerline direction, and an image that captures and captures reflected light from the illuminated portions that are linearly arranged at both ends of the unequal pitch spring that is illuminated by the light from the illumination unit. Section and the image obtained by the imaging unit, the mutual intervals of the adjacent illuminated portions at both ends of the unequal pitch spring are respectively calculated and the magnitude relationship is compared, and the direction of the unequal pitch spring is determined from the comparison result. An orientation detecting device for an unequal pitch spring, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4147055A JP3000536B2 (en) | 1992-06-08 | 1992-06-08 | Non-uniform pitch spring orientation detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4147055A JP3000536B2 (en) | 1992-06-08 | 1992-06-08 | Non-uniform pitch spring orientation detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05340739A true JPH05340739A (en) | 1993-12-21 |
| JP3000536B2 JP3000536B2 (en) | 2000-01-17 |
Family
ID=15421482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4147055A Expired - Fee Related JP3000536B2 (en) | 1992-06-08 | 1992-06-08 | Non-uniform pitch spring orientation detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3000536B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100868190B1 (en) * | 2007-03-07 | 2008-11-10 | 엘에스전선 주식회사 | Wire Wind State Watch System |
| CN102305595A (en) * | 2011-04-29 | 2012-01-04 | 无锡众望四维科技有限公司 | Method for automatically detecting spring pitch by using mechanical vision system |
| WO2014053892A1 (en) | 2012-10-01 | 2014-04-10 | Toyota Jidosha Kabushiki Kaisha | Part aligning apparatus |
| CN105509647A (en) * | 2015-12-04 | 2016-04-20 | 湖北工业大学 | Coil winding space and thickness visual measurement method based on line laser projection |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101987325B1 (en) * | 2017-09-28 | 2019-06-11 | 주식회사 케이디파워 | Inverter for solar power generation with heat dissipation and earthquake proof function, distribution board, panel board, sunlight connection band |
| KR101987324B1 (en) * | 2017-09-28 | 2019-06-11 | 주식회사 케이디파워 | Inverter for solar power generation with heat dissipation and grounding function, distribution board, panel board, motor control panel, solar connection panel, ESS with heat dissipation and grounding function |
-
1992
- 1992-06-08 JP JP4147055A patent/JP3000536B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100868190B1 (en) * | 2007-03-07 | 2008-11-10 | 엘에스전선 주식회사 | Wire Wind State Watch System |
| CN102305595A (en) * | 2011-04-29 | 2012-01-04 | 无锡众望四维科技有限公司 | Method for automatically detecting spring pitch by using mechanical vision system |
| WO2014053892A1 (en) | 2012-10-01 | 2014-04-10 | Toyota Jidosha Kabushiki Kaisha | Part aligning apparatus |
| CN105509647A (en) * | 2015-12-04 | 2016-04-20 | 湖北工业大学 | Coil winding space and thickness visual measurement method based on line laser projection |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3000536B2 (en) | 2000-01-17 |
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