JPH0158963U - - Google Patents
Info
- Publication number
- JPH0158963U JPH0158963U JP15424387U JP15424387U JPH0158963U JP H0158963 U JPH0158963 U JP H0158963U JP 15424387 U JP15424387 U JP 15424387U JP 15424387 U JP15424387 U JP 15424387U JP H0158963 U JPH0158963 U JP H0158963U
- Authority
- JP
- Japan
- Prior art keywords
- light shielding
- shielding plate
- photo interrupter
- determining
- absence
- 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 3
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の一実施例を示す斜視図、第２
図は第１図に示すフオトインタラプタのブロツク
図、第３図は従来の一例を示す斜視図、第４図ａ
，ｂは第３図に示すフオトダイオードの出力特性
を示すグラフである。
１…発光用ＬＥＤ、２…トリガ用フオトダイオ
ード、３…検出用フオトダイオード、４…ホール
ド回路、５…スレツシヨルドレベル発生回路、６
…コンパレータ、７…ハウジング、８…シヨミツ
トトリガ回路。
Fig. 1 is a perspective view showing one embodiment of the present invention;
The figures are a block diagram of the photo interrupter shown in Fig. 1, Fig. 3 is a perspective view showing a conventional example, and Fig. 4 a.
, b are graphs showing the output characteristics of the photodiode shown in FIG. 3. 1...LED for light emission, 2...Photodiode for trigger, 3...Photodiode for detection, 4...Hold circuit, 5...Threshold level generation circuit, 6
…Comparator, 7…Housing, 8…Short trigger circuit.
Claims (1)
プタと、前記検出用フオトインタラプタの遮光板
進入方向に並列して取り付けられたトリガ用フオ
トインタラプタと、前記トリガ用フオトインタラ
プタ出力タイミングで前記検出用フオトインタラ
プタの出力電圧をホールドし前記ホールド電圧か
ら遮光板検出のためのスレツシヨルドレベルを決
定する決定回路とを含むことを特徴とするフオト
インタラプタ。 a detection photo interrupter for determining the presence or absence of a light shielding plate; a trigger photo interrupter installed in parallel in the direction in which the detection photo interrupter enters the light shielding plate; and a trigger photo interrupter for determining the presence or absence of a light shielding plate; A photointerrupter comprising: a determining circuit that holds an output voltage and determines a threshold level for detecting a light shielding plate from the hold voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15424387U JPH0158963U (en) | 1987-10-07 | 1987-10-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15424387U JPH0158963U (en) | 1987-10-07 | 1987-10-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0158963U true JPH0158963U (en) | 1989-04-13 |
Family
ID=31430805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15424387U Pending JPH0158963U (en) | 1987-10-07 | 1987-10-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0158963U (en) |
-
1987
- 1987-10-07 JP JP15424387U patent/JPH0158963U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6013449U (en) | Structure of smoke detection part of scattered light smoke detector | |
| JPH0158963U (en) | ||
| JPS6228655U (en) | ||
| JPS615485U (en) | Paper detection device | |
| JPS61123964U (en) | ||
| JPH0449327U (en) | ||
| JPS62187238U (en) | ||
| JPS6133192U (en) | Scattered light smoke detector test equipment | |
| JPS63173647U (en) | ||
| JPS62187237U (en) | ||
| JPS61145344U (en) | ||
| JPS5933268U (en) | semiconductor laser | |
| JPH0287343U (en) | ||
| JPH0385667U (en) | ||
| JPS62184404U (en) | ||
| JPH0390007U (en) | ||
| JPS63168629U (en) | ||
| JPS5937648U (en) | Reflective optical sensor device | |
| JPS6133048U (en) | Image density detection device | |
| JPS62277589A (en) | Photodetector | |
| JPH01180609U (en) | ||
| JPH01180687U (en) | ||
| JPH0380387U (en) | ||
| JPS6215585U (en) | ||
| JPS62168528U (en) |