JPS6130202B2 - - Google Patents
Info
- Publication number
- JPS6130202B2 JPS6130202B2 JP10213477A JP10213477A JPS6130202B2 JP S6130202 B2 JPS6130202 B2 JP S6130202B2 JP 10213477 A JP10213477 A JP 10213477A JP 10213477 A JP10213477 A JP 10213477A JP S6130202 B2 JPS6130202 B2 JP S6130202B2
- Authority
- JP
- Japan
- Prior art keywords
- measurement
- light source
- plane
- measurement plane
- light
- 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.)
- Expired
Links
- 238000005259 measurement Methods 0.000 claims description 37
- 238000010586 diagram Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Measurement Of Optical Distance (AREA)
Description
【発明の詳細な説明】
本発明は光学的に距離を測定する装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical distance measuring device.
従来、測定系の光源より測定対象面に映像を投
射してその大きさから光源との間の距離を判定す
る場合、この映像を読みとる視覚センサ（例えば
ビジコンカメラ、フオトダイオードアレイカメラ
等）と測定対象面との距離が光源とは独立に変化
すると測定が不可能となるため測定作業がきわめ
て不便であつた。 Conventionally, when an image is projected onto the surface to be measured from the light source of the measurement system and the distance to the light source is determined from the size of the image, a visual sensor that reads this image (e.g., a vidicon camera, photodiode array camera, etc.) and a measurement system are used. If the distance to the target surface changes independently of the light source, measurement becomes impossible, making measurement work extremely inconvenient.
本発明は測定面に対して平行な光源面に所定の
間隔をおいて配置された第１、第２の光源から、
上記測定面に光を投射することにより、カメラと
測定面との距離に無関係に光源と測定面間の距離
を測定できる距離測定装置を提供するものであ
る。図面はその一実施例を示すもので、１は測定
平面、２は光源Ａ，Ｂを設けた光源面、３はカメ
ラ、４は距離計算をする演算回路、５は出力端子
である。Ｚは測定しようとする光源面２と測定平
面１との距離、Ｄは測定平面１とカメラ３との距
離、ａは光源Ａより測定平面１に垂直に投射され
るビーム、ｂ，ｃはそれぞれ光源Ｂより測定平面
１に異なつた角度で投射されるビームである。θ
１はビームａとビームｂの傾き角度、θ２はビー
ムａとビームｃの傾き角度である。x1は光源Ａ，
Ｂの距離、x0，x2，x3はそれぞれビームａ，ｂ，
ｃの投射された映像の位置でx2，x3はx0からの距
離である。なおカメラ３では測定平面１を撮像す
ることにより測定平面との距離Ｄの如何にかかわ
らずx2とx3の比Ｒは観測できるものである。 The present invention includes first and second light sources arranged at a predetermined interval on a light source surface parallel to the measurement surface.
The present invention provides a distance measuring device that can measure the distance between a light source and a measurement surface by projecting light onto the measurement surface, regardless of the distance between the camera and the measurement surface. The drawing shows one embodiment of the present invention, in which 1 is a measurement plane, 2 is a light source surface provided with light sources A and B, 3 is a camera, 4 is an arithmetic circuit for distance calculation, and 5 is an output terminal. Z is the distance between the light source surface 2 to be measured and the measurement plane 1, D is the distance between the measurement plane 1 and the camera 3, a is the beam projected perpendicularly to the measurement plane 1 from the light source A, and b and c are respectively These are beams projected from light source B onto measurement plane 1 at different angles. θ
1 is the inclination angle of beam a and beam b, and θ2 is the inclination angle of beam a and beam c. x 1 is light source A,
The distances of B, x 0 , x 2 , x 3 are the beams a, b,
x 2 and x 3 are the distances from x 0 at the position of the projected image c. Note that by capturing an image of the measurement plane 1 with the camera 3, the ratio R between x 2 and x 3 can be observed regardless of the distance D from the measurement plane.
次にこの実施例の動作について説明する。図面
より明らかなようにx1，x2，θ１，θ２，Ｚの間
には次の関係がある。 Next, the operation of this embodiment will be explained. As is clear from the drawings, there is the following relationship between x 1 , x 2 , θ 1 , θ 2 , and Z.
x2＝x1＋Ztanθ１ ………(1)
x3＝x1＋Ztanθ２ ………(2)
したがつてx3とx2の比Ｒは次のように表わせ
る。 x 2 = x 1 + Ztanθ 1 (1) x 3 = x 1 + Ztanθ 2 (2) Therefore, the ratio R between x 3 and x 2 can be expressed as follows.
Ｒ＝ｘ１＋Ｚｔａｎθ２／ｘ１＋Ｚｔａｎθ１………
(3)
∴Ｚ＝（１−Ｒ）ｘ１／Ｒｔａｎθ１−ｔａｎθ２…
……(4)
ここでθ１を０、x1を単位長とすれば次のよう
に上式を簡略化できる。 R=x 1 +Ztanθ 2 /x 1 +Ztanθ 1 ......
(3) ∴Z=(1-R)x 1 /Rtanθ 1 -tanθ 2 ...
...(4) Here, if θ 1 is 0 and x 1 is the unit length, the above equation can be simplified as follows.
Ｚ＝Ｒ−１／ｔａｎθ２ ………(5)
(4)式から明らかなようにカメラ３と測定平面１
との距離Ｄは距離Ｚの算出に無関係であるからカ
メラ３と光源を一体構造とする必要はない。した
がつて光源Ａ，Ｂの設定にかかわるx1，θ１，θ
２の値を演算回路４に定数として予め入力してお
けば観測にかかるx2とx3の値の比から距離Ｚは演
算回路４で求めることができる。 Z=R-1/tanθ 2 ......(5) As is clear from equation (4), camera 3 and measurement plane 1
Since the distance D between the camera 3 and the light source is irrelevant to the calculation of the distance Z, it is not necessary to form the camera 3 and the light source into an integral structure. Therefore, x 1 , θ 1 , θ related to the settings of light sources A and B
If the value of 2 is previously input as a constant to the arithmetic circuit 4, the distance Z can be determined by the arithmetic circuit 4 from the ratio of the values of x 2 and x 3 required for observation.
またθ１の代りにθ２を０としてx1を単位長と
しても４式は簡略化されるし、x3，x2の比Ｒの代
りにx2，x3の比R′を求めても演算処理は容易であ
る。 Also, equation 4 can be simplified by setting θ 2 to 0 instead of θ 1 and making x 1 the unit length, and instead of the ratio R of x 3 and x 2 , find the ratio R' of x 2 and x 3 . The calculation process is also easy.
またカメラとしては受光素子としてフオトダイ
オードアレイによるラインセンサを使用すればx0
からx2の出力までに要したクロツク数N2と、x0か
らx3の出力までに要したクロツク数N3から直ち
にN3／N2＝Ｒとして求まるのでこのような計測
には特に便利である。また光源Ｂは必ずしも２本
の光ビームの必要はなく、光ビームｂ、光ビーム
ｃをエツジとするような拡がりを有する投射光で
あつても良い。 Also, as a camera, if you use a line sensor with a photodiode array as the light receiving element, x 0
This is particularly useful for such measurements because N 3 /N 2 = R can be immediately determined from the number of clocks N 2 required to output from x 2 and the number N 3 of clocks required from x 0 to output x 3 . It is. Further, the light source B does not necessarily need to have two light beams, and may be a projection light having a spread such that the light beams b and c form the edges.
以上のように本発明は、測定平面に対して平行
な直線に所定の間隔をおいて第１、第２の光源を
配置し、上記第１の光源から発する光線及び上記
第１、第２の光源が配置された直線を含む仮想平
面と上記測定平面とを所定の角度で交差させ、上
記仮想平面と上記測定平面との交線に対して上記
第１の光源から発した光を直角に投射して基準位
置を表示させ、上記仮想平面上に上記第２の光源
から互いに異なる角度で発した光を上記測定平面
に投射して第１、第２の測定位置を表示させ、上
記測定平面を撮像するカメラを設け、上記カメラ
の出力により上記基準位置から上記第１、第２の
測定位置までの距離の比の値を演算し、上記第
１、第２の光源が配置された直線と上記測定平面
との間の距離を演算する回路を設けているため、
カメラと光源の位置を自由に設定したいような特
殊な振動体と平面との間の遠隔距離測定に特に便
利であり、特にθ１またはθ２を０とするカメラ
の繰返し操作出力をそのままオツシログラフ等に
出力してもx2またはx3を参照出力としてＺを読み
とることができきわめて便利である。 As described above, in the present invention, first and second light sources are arranged at a predetermined interval in a straight line parallel to a measurement plane, and the light rays emitted from the first light source and the first and second light sources are arranged at a predetermined interval. A virtual plane including a straight line on which the light source is arranged intersects the measurement plane at a predetermined angle, and the light emitted from the first light source is projected at right angles to the line of intersection between the virtual plane and the measurement plane. to display the reference position, project light emitted from the second light source at different angles onto the measurement plane onto the virtual plane to display the first and second measurement positions, and display the measurement plane. A camera for imaging is provided, and the value of the ratio of the distances from the reference position to the first and second measurement positions is calculated based on the output of the camera, and the distance between the straight line on which the first and second light sources are arranged and the above-mentioned measurement position is calculated. Since it is equipped with a circuit that calculates the distance to the measurement plane,
It is especially useful for remote distance measurement between a special vibrating body and a flat surface, where you want to freely set the camera and light source positions, and in particular, the output of repeated camera operations with θ 1 or θ 2 set to 0 can be used as an oscillograph, etc. It is very convenient to be able to read Z by using x 2 or x 3 as a reference output.
図面は本発明の一実施例による距離測定装置の
構成図である。
１……測定面、３……カメラ、４……演算回
路、Ａ，Ｂ……光源。
The drawing is a configuration diagram of a distance measuring device according to an embodiment of the present invention. 1...Measurement surface, 3...Camera, 4...Arithmetic circuit, A, B...Light source.
Claims (1)
をおいて第１、第２の光源を配置し、上記第１の
光源から発する光線及び上記第１、第２の光源が
配置された直線を含む仮想平面と上記測定平面と
を所定の角度で交差させ、上記仮想平面と上記測
定平面との交線に対して上記第１の光源から発し
た光を直角に投射して基準位置を表示させ、上記
仮想平面上に上記第２の光源から互いに異異なる
角度で発した光を上記測定平面に投射して第１、
第２の測定位置を表示させ、上記測定平面を撮像
するカメラを設け、上記カメラの出力により上記
基準位置から上記第１、第２の測定位置までの距
離の比の値を演算し、上記第１、第２の光源が配
置された直線と上記測定平面との間の距離を演算
する回路を設けてなる距離測定装置。1 First and second light sources are arranged at a predetermined interval on a straight line parallel to the measurement plane, and the light ray emitted from the first light source and the straight line on which the first and second light sources are arranged. A virtual plane containing the measurement plane intersects the measurement plane at a predetermined angle, and the reference position is displayed by projecting light emitted from the first light source at right angles to the intersection line of the virtual plane and the measurement plane. and projecting light emitted from the second light source at different angles onto the virtual plane onto the measurement plane to measure the first,
A camera is provided to display a second measurement position and take an image of the measurement plane, and the value of the ratio of distances from the reference position to the first and second measurement positions is calculated based on the output of the camera. 1. A distance measuring device provided with a circuit for calculating the distance between the straight line on which the second light source is arranged and the measurement plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10213477A JPS5435764A (en) | 1977-08-24 | 1977-08-24 | Distance measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10213477A JPS5435764A (en) | 1977-08-24 | 1977-08-24 | Distance measuring apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5435764A JPS5435764A (en) | 1979-03-16 |
| JPS6130202B2 true JPS6130202B2 (en) | 1986-07-11 |
Family
ID=14319286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10213477A Granted JPS5435764A (en) | 1977-08-24 | 1977-08-24 | Distance measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5435764A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0753122B2 (en) * | 1988-12-14 | 1995-06-07 | ワイケイケイ株式会社 | Locking slider for slide fasteners |
| JP6309130B1 (en) | 2017-03-24 | 2018-04-11 | テイ・エス テック株式会社 | Vehicle seat |
| JP6583325B2 (en) | 2017-03-24 | 2019-10-02 | テイ・エス テック株式会社 | Vehicle seat |
-
1977
- 1977-08-24 JP JP10213477A patent/JPS5435764A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5435764A (en) | 1979-03-16 |
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