JPS62135950U - - Google Patents
Info
- Publication number
- JPS62135950U JPS62135950U JP2361386U JP2361386U JPS62135950U JP S62135950 U JPS62135950 U JP S62135950U JP 2361386 U JP2361386 U JP 2361386U JP 2361386 U JP2361386 U JP 2361386U JP S62135950 U JPS62135950 U JP S62135950U
- Authority
- JP
- Japan
- Prior art keywords
- light
- measured
- utility
- model registration
- light receiving
- 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
- 238000010586 diagram Methods 0.000 description 4
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Description
第１図は本考案の実施例に係る汚れ検出装置を
示すブロツク系統図、第２図は第１図の各部にお
ける信号例を示す図で、は被測定物が汚れてい
ないとき、は被測定物が汚れているときを示す
図、第３図は本考案の別実施例を示す図、第４図
は従来技術を示す図である。
そして図面中、１は被測定物（ヘツドライトシ
ールド）、２は発光素子、３は受光素子、５は投
光手段、１２は受光手段、９は比較手段（計数回
路）である。
Fig. 1 is a block system diagram showing a contamination detection device according to an embodiment of the present invention, and Fig. 2 is a diagram showing an example of signals in each part of Fig. 1. FIG. 3 is a diagram showing another embodiment of the present invention, and FIG. 4 is a diagram showing a conventional technique. In the drawing, 1 is an object to be measured (headlight shield), 2 is a light emitting element, 3 is a light receiving element, 5 is a light projecting means, 12 is a light receiving means, and 9 is a comparing means (counting circuit).
Claims (1)
光手段と、この投光手段からの光のうち前記被測
定物により反射された反射光、又は前記被測定物
を透過した透過光を検出する受光手段と、この受
光手段により受光される光の受光周期と前記投光
手段による投光周期とを比較する比較手段とを備
えてなる汚れ検出装置。 (2) 実用新案登録請求の範囲第１項記載の装置
において、前記比較手段は前記投光周期に基く信
号をクロツク入力とし、前記受光手段の出力信号
をリセツト入力とした計数回路であることを特徴
とする汚れ検出装置。 (3) 実用新案登録請求の範囲第１項記載の装置
において、前記比較手段は時定数を前記投光周期
に対応して所定の値に設定し、前記受光手段の出
力信号をトリガ入力とした単安定マルチバイブレ
タであることを特徴とする汚れ検出装置。[Claims for Utility Model Registration] (1) Light projecting means for periodically projecting light onto an object to be measured, and reflected light from the light projecting means reflected by the object to be measured; or dirt detection comprising a light receiving means for detecting the transmitted light transmitted through the object to be measured, and a comparison means for comparing the light receiving cycle of the light received by the light receiving means and the light emitting cycle by the light projecting means. Device. (2) Utility Model Registration In the apparatus set forth in claim 1, the comparison means is a counting circuit whose clock input is a signal based on the light emitting period and whose reset input is the output signal of the light reception means. Features a dirt detection device. (3) Utility Model Registration In the device according to claim 1, the comparing means sets a time constant to a predetermined value corresponding to the light emitting period, and uses the output signal of the light receiving means as a trigger input. A dirt detection device characterized by being a monostable multivibrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2361386U JPS62135950U (en) | 1986-02-20 | 1986-02-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2361386U JPS62135950U (en) | 1986-02-20 | 1986-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62135950U true JPS62135950U (en) | 1987-08-27 |
Family
ID=30822079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2361386U Pending JPS62135950U (en) | 1986-02-20 | 1986-02-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62135950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04122642U (en) * | 1991-04-19 | 1992-11-04 | 古河電気工業株式会社 | UV irradiation device |
-
1986
- 1986-02-20 JP JP2361386U patent/JPS62135950U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04122642U (en) * | 1991-04-19 | 1992-11-04 | 古河電気工業株式会社 | UV irradiation device |
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