JPS6433074U - - Google Patents
Info
- Publication number
- JPS6433074U JPS6433074U JP12744287U JP12744287U JPS6433074U JP S6433074 U JPS6433074 U JP S6433074U JP 12744287 U JP12744287 U JP 12744287U JP 12744287 U JP12744287 U JP 12744287U JP S6433074 U JPS6433074 U JP S6433074U
- Authority
- JP
- Japan
- Prior art keywords
- rotating body
- slits
- slit
- light
- photodetecting elements
- 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
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Optical Transform (AREA)
Description
第１図は本考案の原理を示す図、第２図は本考
案に係る速度センサの実施例を示す斜視図、第３
図は本考案における光検出素子及び信号処理回路
の構成例を示す回路図、第４図ａ乃至ｃは第３図
における各部の波形を示す図、第５図は従来の速
度検出センサの構成を示す斜視図、第６図は他５
図速度センサの検出動作を説明するための要部拡
大図、第７図は光検出素子の構成を示す斜視図、
第８図は第７図光検出素子の検出特性を示す図で
ある。
１……円盤状回転体、２，３……スリツト、４
，５……スリツト列、６，７，１７……光検出素
子、６ａ，７ａ，１７ａ……発光素子、６ｂ，７
ｂ，１７ｂ……受光素子、８……信号処理回路、
１１……回転駆動軸、１２，１３……波形整形回
路、１４……排他的論理和回路。
Fig. 1 is a diagram showing the principle of the invention, Fig. 2 is a perspective view showing an embodiment of the speed sensor according to the invention, and Fig. 3 is a diagram showing the principle of the invention.
The figure is a circuit diagram showing an example of the configuration of a photodetection element and a signal processing circuit in the present invention, Figures 4a to 4c are diagrams showing waveforms of each part in Figure 3, and Figure 5 is a diagram showing the configuration of a conventional speed detection sensor. The perspective view shown in Figure 6 is the other 5.
Figure 7 is an enlarged view of main parts for explaining the detection operation of the speed sensor; Figure 7 is a perspective view showing the configuration of the photodetection element;
FIG. 8 is a diagram showing the detection characteristics of the photodetecting element shown in FIG. 7. 1... Disc-shaped rotating body, 2, 3... Slit, 4
, 5... Slit row, 6, 7, 17... Photo detection element, 6a, 7a, 17a... Light emitting element, 6b, 7
b, 17b... Light receiving element, 8... Signal processing circuit,
11... Rotation drive shaft, 12, 13... Waveform shaping circuit, 14... Exclusive OR circuit.
Claims (1)
た同数個の複数のスリツトより成る第１及び第２
のスリツト列と、該第１及び第２のスリツト列が
形成される回転体を挾んで各々対向して配設され
た発光素子と受光素子より成る第１及び第２の光
検出素子と、該第１及び第２の光検出素子よりの
検出信号を入力し前記回転体の回転速度に応じた
速度信号を出力する信号処理回路とを備え、 前記回転体の回転時において前記第１及び第２
のスリツト列により前記各発光素子からの発光を
継続的に対向する受光素子にて受光し、各受光信
号を検出信号として前記信号処理回路に入力する
ようにし、前記第１及び第２のスリツト列の各ス
リツトを互いの位相差が電気的にπ／４ずれるよ
うに形成したことを特徴とする速度センサ。[Claims for Utility Model Registration] First and second slits made of the same number of slits formed at predetermined intervals in the circumferential direction of a disc-shaped rotating body.
a slit row, first and second photodetecting elements each consisting of a light emitting element and a light receiving element, which are arranged to face each other across the rotating body on which the first and second slit rows are formed; a signal processing circuit that inputs detection signals from first and second photodetecting elements and outputs a speed signal corresponding to the rotational speed of the rotating body, and when the rotating body rotates, the first and second photodetecting elements
The light emitted from each of the light emitting elements is continuously received by the opposing light receiving element by the slit row, and each light reception signal is inputted to the signal processing circuit as a detection signal, and the first and second slit rows A speed sensor characterized in that each of the slits is formed so that the phase difference between the slits is electrically shifted by π/4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12744287U JPS6433074U (en) | 1987-08-24 | 1987-08-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12744287U JPS6433074U (en) | 1987-08-24 | 1987-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6433074U true JPS6433074U (en) | 1989-03-01 |
Family
ID=31379879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12744287U Pending JPS6433074U (en) | 1987-08-24 | 1987-08-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6433074U (en) |
-
1987
- 1987-08-24 JP JP12744287U patent/JPS6433074U/ja active Pending
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