JPS63153127U

JPS63153127U -

Info

Publication number: JPS63153127U
Application number: JP4606087U
Authority: JP
Priority date: 1987-03-28
Filing date: 1987-03-28
Publication date: 1988-10-07

Description

[Brief explanation of the drawing]

第１図は本考案に係るフオトエンコーダ装置の
一例を示す回路図、第２図は第１図に示される例
の動作説明に供されるタイムチヤート、第３図Ａ
及びＢは従来のフオトエンコーダに用いられる回
転円板を示す部分平面図、第４図は従来のフオト
エンコーダを示す概略図、第５図は第４図に示さ
れるフオトエンコーダの動作説明に供されるタイ
ムチヤートである。図中、１′は回転円板、２ｂ′は光透過孔、１
０は発光ダイオード、１２はフオトトランジスタ
、１４はピークホールド部、２１は分圧部、２３
はレベル比較部、２４は出力端子である。 Fig. 1 is a circuit diagram showing an example of a photo encoder device according to the present invention, Fig. 2 is a time chart used to explain the operation of the example shown in Fig. 1, and Fig. 3A.
and B are partial plan views showing a rotating disk used in a conventional photo encoder, FIG. 4 is a schematic diagram showing a conventional photo encoder, and FIG. 5 is used to explain the operation of the photo encoder shown in FIG. 4. This is a time chart. In the figure, 1' is a rotating disk, 2b' is a light transmission hole, and 1
0 is a light emitting diode, 12 is a phototransistor, 14 is a peak hold section, 21 is a voltage dividing section, 23
2 is a level comparison section, and 24 is an output terminal.

Claims

[Claims for Utility Model Registration] A movable plate in which a plurality of light transmitting or reflecting parts are arranged and formed at predetermined intervals, and the movable plate is driven to move the plurality of light transmitting or reflecting parts; a light projecting section that allows light to enter a portion in which a plurality of light transmitting or reflecting sections are arranged; and a plurality of light transmitting or reflecting sections on the movable plate into which the light from the light projecting section is incident. a photodetector section that receives light from the detected area and generates a detection output that changes depending on the amount of received light; and a photodetector section that is connected to the output side of the photodetector section and generates a voltage output that corresponds to the peak level of the detection output. a peak level hold section connected to the output side of the peak level hold section and dividing the voltage output at a predetermined ratio; a detection output obtained from the photodetection section and the voltage division section; A photo encoder device comprising: a level comparison unit that compares the detected output with a divided voltage output obtained from the divided voltage output and obtains a pulse output depending on whether the level of the detected output is less than or higher than the level of the divided voltage output.