JPS63157683U - - Google Patents
Info
- Publication number
- JPS63157683U JPS63157683U JP5039387U JP5039387U JPS63157683U JP S63157683 U JPS63157683 U JP S63157683U JP 5039387 U JP5039387 U JP 5039387U JP 5039387 U JP5039387 U JP 5039387U JP S63157683 U JPS63157683 U JP S63157683U
- Authority
- JP
- Japan
- Prior art keywords
- light
- circuit
- received light
- signal
- received
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Electronic Switches (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Description
第１図は本考案の物体検知用光電センサの１実
施例のブロツク構成図、第２図は第１図の各部の
信号波形を示すタイミングチヤート、第３図およ
び第４図はそれぞれ自動開閉ドアの起動スイツチ
に適用した場合の説明図である。
２……発光素子、４……被検知物体、６……受
光素子、８……受光量検知回路、９……第１の比
較回路、１２……受光変動量検知回路、１３……
第２の比較回路、１４……オア回路。
Fig. 1 is a block configuration diagram of one embodiment of the photoelectric sensor for object detection of the present invention, Fig. 2 is a timing chart showing signal waveforms of each part in Fig. 1, and Figs. 3 and 4 are respectively for an automatic opening/closing door. FIG. 2 is an explanatory diagram when applied to a start switch. 2... Light emitting element, 4... Object to be detected, 6... Light receiving element, 8... Received light amount detection circuit, 9... First comparison circuit, 12... Received light variation amount detection circuit, 13...
Second comparison circuit, 14...OR circuit.
Claims (1)
視光線、赤外光線等の光線を投射し、この光線の
被検知物体による反射光を受光手段で受光して光
電変換し、この電気信号により被検知物体の検知
エリア内における存在の有無を検知する反射型物
体検知用光電センサにおいて、前記投光手段およ
び受光手段をそれぞれ設け、前記受光手段の受光
信号から受光量の変動および受光量をそれぞれ検
知する受光変動量検知回路および受光量検知回路
と、この受光量検知回路の出力信号を設定レベル
と比較して設定レベル以上と判別した時に信号出
力する第１の比較回路と、前記受光変動量検知回
路の出力信号を上、下限の設定レベルと比較して
設定レベル範囲外と判別した時に信号出力する第
２の比較回路と、前記両比較回路からの信号入力
により物体検知信号を出力するオア回路とを備え
てなる物体検知用光電センサ。 (2) 前記受光量検知回路をサンプルホールド回
路で構成し、前記受光変動量検知回路を前記サン
プルホールド回路に接続した微分回路で構成した
実用新案登録請求の範囲第１項に記載の物体検知
用光電センサ。[Scope of Claim for Utility Model Registration] (1) A light beam such as visible light or infrared light is projected from a light projecting means toward a predetermined detection area, and the light reflected by the object to be detected is received by a light receiving means. In a reflective object detection photoelectric sensor, which performs photoelectric conversion using the electric signal and detects the presence or absence of a detected object in a detection area, the light emitting means and the light receiving means are respectively provided, and from the light reception signal of the light receiving means, A received light fluctuation amount detection circuit and a received light amount detection circuit that detect fluctuations in the amount of received light and the amount of received light, respectively, and a first circuit that compares the output signal of the received light amount detection circuit with a set level and outputs a signal when it is determined that the received light amount is equal to or higher than the set level. a second comparison circuit that compares the output signal of the received light fluctuation amount detection circuit with upper and lower set levels and outputs a signal when it is determined that the level is outside the set level range; and a signal from both of the comparison circuits. A photoelectric sensor for detecting an object, which is equipped with an OR circuit that outputs an object detection signal based on input. (2) The object detection device according to claim 1, wherein the received light amount detection circuit is configured with a sample hold circuit, and the received light fluctuation amount detection circuit is configured with a differential circuit connected to the sample hold circuit. Photoelectric sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5039387U JPH0430552Y2 (en) | 1987-04-01 | 1987-04-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5039387U JPH0430552Y2 (en) | 1987-04-01 | 1987-04-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63157683U true JPS63157683U (en) | 1988-10-17 |
| JPH0430552Y2 JPH0430552Y2 (en) | 1992-07-23 |
Family
ID=30873716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5039387U Expired JPH0430552Y2 (en) | 1987-04-01 | 1987-04-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0430552Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0313849U (en) * | 1989-06-26 | 1991-02-13 | ||
| JP2009236751A (en) * | 2008-03-27 | 2009-10-15 | Asahi Kasei Electronics Co Ltd | Infrared sensor, and detecting method using infrared sensor |
-
1987
- 1987-04-01 JP JP5039387U patent/JPH0430552Y2/ja not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0313849U (en) * | 1989-06-26 | 1991-02-13 | ||
| JP2009236751A (en) * | 2008-03-27 | 2009-10-15 | Asahi Kasei Electronics Co Ltd | Infrared sensor, and detecting method using infrared sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0430552Y2 (en) | 1992-07-23 |
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