JPH0187203U - - Google Patents
Info
- Publication number
- JPH0187203U JPH0187203U JP18284487U JP18284487U JPH0187203U JP H0187203 U JPH0187203 U JP H0187203U JP 18284487 U JP18284487 U JP 18284487U JP 18284487 U JP18284487 U JP 18284487U JP H0187203 U JPH0187203 U JP H0187203U
- Authority
- JP
- Japan
- Prior art keywords
- pattern edge
- edge detection
- ccd camera
- amount
- movement
- 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
- 238000003708 edge detection Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims 2
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Description
第１図は、この考案の１実施例を示すパターン
エツジ検出装置の概略構成図、第２図は、第１図
の装置の１部のブロツク構成図、第３図は、この
考案のパターンエツジ検出装置が適用される測長
機の構成の１例を示す斜視図、第４図は、第２図
に示した部分の動作を説明するためのフローチヤ
ート、第５図は、設定レベル範囲を示す図、第６
図は、ＣＣＤカメラを高速移動させた時の設定レ
ベル範囲を示す図である。
１……測長機、３……テーブル、１０……ＣＣ
Ｄカメラ、１２……移動手段、２０……移動量読
取り手段、２８……ビデオコントロール回路。
FIG. 1 is a schematic block diagram of a pattern edge detection device showing an embodiment of this invention, FIG. 2 is a block diagram of a part of the device shown in FIG. 1, and FIG. FIG. 4 is a perspective view showing an example of the configuration of a length measuring machine to which the detection device is applied. FIG. 4 is a flow chart for explaining the operation of the portion shown in FIG. 2. FIG. Figure shown, No. 6
The figure shows the setting level range when the CCD camera is moved at high speed. 1... Length measuring machine, 3... Table, 10... CC
D camera, 12... moving means, 20... moving amount reading means, 28... video control circuit.
Claims (1)
の上方より撮像するＣＣＤカメラと、このＣＣＤ
カメラを搭載してテーブルと平行なＸ−Ｙ平面内
で前記被測定物とＣＣＤカメラとを相対移動させ
る移動手段と、この移動手段のＸ方向移動量及び
Ｙ方向移動量をそれぞれ読み取る移動量読取り装
置と、前記ＣＣＤカメラの出力信号を処理するビ
デオコントロール回路とを備え、前記ＣＣＤカメ
ラの相対移動量に基づいて被測定物を測長するよ
うにした測長機の、その測定開始点及び測定終了
点となるパターンエツジを検出するパターンエツ
ジ検出装置において、前記ビデオコントロール回
路に、前記ＣＣＤカメラの特定の素子の受光量に
応じた信号レベルが所定のレベル範囲内に存在し
、かつそのレベル範囲内に存在する時間が所定時
間より長かつた時にパターンエツジ検出信号を出
力する手段を設けたことを特徴とする測長機のパ
ターンエツジ検出装置。 A table on which the object to be measured is placed, a CCD camera that takes an image of the object from above, and this CCD.
A moving means that carries a camera and moves the object to be measured and the CCD camera relative to each other in an X-Y plane parallel to the table, and a movement amount reading device that reads the amount of movement in the X direction and the amount of movement in the Y direction of this moving means, respectively. and a video control circuit that processes an output signal of the CCD camera, and measures the length of an object based on the amount of relative movement of the CCD camera, and the measurement start point and measurement thereof. In a pattern edge detection device that detects a pattern edge serving as an end point, the video control circuit is provided with a signal level corresponding to the amount of light received by a specific element of the CCD camera within a predetermined level range; 1. A pattern edge detection device for a length measuring machine, characterized in that the pattern edge detection device for a length measuring machine is provided with means for outputting a pattern edge detection signal when a pattern edge detection signal is present for a period longer than a predetermined time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18284487U JPH0187203U (en) | 1987-11-30 | 1987-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18284487U JPH0187203U (en) | 1987-11-30 | 1987-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0187203U true JPH0187203U (en) | 1989-06-08 |
Family
ID=31474286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18284487U Pending JPH0187203U (en) | 1987-11-30 | 1987-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0187203U (en) |
-
1987
- 1987-11-30 JP JP18284487U patent/JPH0187203U/ja active Pending
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