JPH0436419U - - Google Patents
Info
- Publication number
- JPH0436419U JPH0436419U JP7953890U JP7953890U JPH0436419U JP H0436419 U JPH0436419 U JP H0436419U JP 7953890 U JP7953890 U JP 7953890U JP 7953890 U JP7953890 U JP 7953890U JP H0436419 U JPH0436419 U JP H0436419U
- Authority
- JP
- Japan
- Prior art keywords
- light
- projecting element
- rotating body
- receiving elements
- light projecting
- 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 4
- 230000003287 optical effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Transform (AREA)
Description
第１図乃至第７図は本考案の一実施例を示すも
ので、第１図は全体の斜視図、第２図は電気回路
図、第３図乃至第６図は異なつた回転位置におけ
る検出状態を示す側面図、第７図は検出電圧とパ
ルス信号との対応を示す図である。また、第８図
乃至第１０図は従来例を示す夫々第１図、第２図
、第７図相当図である。
図中、２１は回転板（回転体）、２２はスリツ
ト（通過光量一致部）、２３は遮光部（通過光量
一致部）、２４はＬＥＤ（投光素子）、２５は第
１のフオトトランジスタ（第１の受光素子）、２
６は第２のフオトトランジスタ（第２の受光素子
）である。
Figures 1 to 7 show an embodiment of the present invention, in which Figure 1 is an overall perspective view, Figure 2 is an electrical circuit diagram, and Figures 3 to 6 show detection at different rotational positions. FIG. 7, a side view showing the state, is a diagram showing the correspondence between the detected voltage and the pulse signal. Further, FIGS. 8 to 10 are views corresponding to FIGS. 1, 2, and 7, respectively, showing conventional examples. In the figure, 21 is a rotating plate (rotating body), 22 is a slit (passing light amount matching part), 23 is a light shielding part (passing light amount matching part), 24 is an LED (light emitting element), and 25 is a first phototransistor ( first light receiving element), 2
6 is a second phototransistor (second light receiving element).
Claims (1)
転方向に沿うと共に前記投光素子の光軸に対して
対称位置に配設された第１、第２の受光素子と、
前記回転体の同心円上に所定ピツチで設けられ前
記投光素子の光軸上に位置した状態でその投光素
子からの光を前記第１、第２の受光素子に均等に
通過させる通過光量一致部と、前記第１、第２の
受光素子の受光レベルが同一レベルとなつたタイ
ミングを検出タイミングとする比較部とを備えた
ことを特徴とする回転角検出装置。 a light projecting element that projects light onto a rotating body; first and second light receiving elements disposed along the rotational direction of the rotating body and symmetrically with respect to the optical axis of the light projecting element;
Matching the amount of transmitted light that is provided at a predetermined pitch on a concentric circle of the rotating body and is located on the optical axis of the light projecting element, and allows the light from the light projecting element to pass equally to the first and second light receiving elements. A rotation angle detection device comprising: a rotation angle detection device; and a comparison portion whose detection timing is a timing when light reception levels of the first and second light receiving elements become the same level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7953890U JPH0436419U (en) | 1990-07-25 | 1990-07-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7953890U JPH0436419U (en) | 1990-07-25 | 1990-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0436419U true JPH0436419U (en) | 1992-03-26 |
Family
ID=31623784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7953890U Pending JPH0436419U (en) | 1990-07-25 | 1990-07-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0436419U (en) |
-
1990
- 1990-07-25 JP JP7953890U patent/JPH0436419U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0190298U (en) | ||
| JPH0351316U (en) | ||
| JPH0436419U (en) | ||
| JPH0436418U (en) | ||
| JPS60143316U (en) | rotary encoder | |
| JPS6215739U (en) | ||
| JPS6415117U (en) | ||
| JPS6134434U (en) | Filter switching device | |
| JPS60158111U (en) | rotation angle sensor | |
| JPS59151112U (en) | Rotating plate type air flow sensor | |
| JPH0252120U (en) | ||
| JPS63174017U (en) | ||
| JPS60156415U (en) | angle sensor | |
| JPS6448619U (en) | ||
| JPH0184069U (en) | ||
| JPS6453913U (en) | ||
| JPS6325320U (en) | ||
| JPS63185511U (en) | ||
| JPS6425718U (en) | ||
| JPS60107723U (en) | Rotation angle detection device | |
| JPS5961759U (en) | vacuum cleaner | |
| JPH0346823U (en) | ||
| JPH0185928U (en) | ||
| JPS6132934U (en) | Liquid level detection device | |
| JPH0252119U (en) |