JPH02123132U - - Google Patents
Info
- Publication number
- JPH02123132U JPH02123132U JP3235589U JP3235589U JPH02123132U JP H02123132 U JPH02123132 U JP H02123132U JP 3235589 U JP3235589 U JP 3235589U JP 3235589 U JP3235589 U JP 3235589U JP H02123132 U JPH02123132 U JP H02123132U
- Authority
- JP
- Japan
- Prior art keywords
- light receiving
- light
- circuit
- control signal
- receiving circuit
- 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 1
- 238000010586 diagram Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Description
第１図は本考案の第１の実施例を示す電気的構
成の概略図、第２図、第３図及び第４図は夫々本
考案の第２、第３及び第４の実施例を示す第１図
相当図である。
図面中、１は発光ダイオード（発光素子）、３
は投光回路、５はフオトダイオード（受光素子）
、８は受光回路、９及び１１はマルチプレクサ回
路、１３，２９及び３８は増幅回路、１７及び４
２は比較回路、１８は基準レベル設定回路、２３
及び３１はアツプダウンカウンタ回路、２４ａ，
２４ｂ及び２４ｃはアツプ、ダウン及びリセツト
入力端子（制御信号用端子）、２５，２８，３３
及び４１は判定回路、２６は出力回路、３０はＡ
／Ｄ変換回路、３２はデジタル比較回路、３４，
３５，４３及び４４は可変抵抗器、３６，３７，
４６及び４７はアナログスイツチ回路、３９及び
４８は制御信号用端子である。
FIG. 1 is a schematic diagram of an electrical configuration showing a first embodiment of the present invention, and FIGS. 2, 3, and 4 show second, third, and fourth embodiments of the present invention, respectively. This is a diagram equivalent to Figure 1. In the drawing, 1 is a light emitting diode (light emitting element), 3
is a light emitter circuit, 5 is a photodiode (light receiving element)
, 8 is a light receiving circuit, 9 and 11 are multiplexer circuits, 13, 29 and 38 are amplifier circuits, 17 and 4
2 is a comparison circuit, 18 is a reference level setting circuit, 23
and 31 are up-down counter circuits, 24a,
24b and 24c are up, down and reset input terminals (terminals for control signals), 25, 28, 33
and 41 is a judgment circuit, 26 is an output circuit, and 30 is A.
/D conversion circuit, 32 is a digital comparison circuit, 34,
35, 43 and 44 are variable resistors, 36, 37,
46 and 47 are analog switch circuits, and 39 and 48 are control signal terminals.
Claims (1)
記発光素子からの光を受ける受光素子を備えた受
光回路と、この受光回路からの受光信号レベルと
基準レベルとを比較して検出対象の有無を判定す
る判定回路とを備えたものにおいて、外部に導出
可能に設けられてデジタル信号が与えられる制御
信号用端子を設けると共に、前記判定回路を、前
記制御信号用端子に与えられたデジタル信号に応
じ前記受光回路からの受光信号レベル及び前記基
準レベルのうちの少なくとも一方を調整可能に構
成したことを特徴とする光電スイツチ装置。 A light emitting circuit that drives a light emitting element to emit light, a light receiving circuit that includes a light receiving element that receives light from the light emitting element, and a light reception signal level from this light receiving circuit is compared with a reference level to determine the detection target. A determination circuit that determines the presence or absence of the control signal is provided with a control signal terminal that can be derived to the outside and is supplied with a digital signal, and the determination circuit is connected to the control signal terminal that is provided with a digital signal that is supplied to the control signal terminal. 1. A photoelectric switch device characterized in that at least one of the light receiving signal level from the light receiving circuit and the reference level can be adjusted according to the light receiving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3235589U JPH02123132U (en) | 1989-03-22 | 1989-03-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3235589U JPH02123132U (en) | 1989-03-22 | 1989-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02123132U true JPH02123132U (en) | 1990-10-09 |
Family
ID=31258798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3235589U Pending JPH02123132U (en) | 1989-03-22 | 1989-03-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02123132U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5529011B2 (en) * | 1972-12-07 | 1980-07-31 |
-
1989
- 1989-03-22 JP JP3235589U patent/JPH02123132U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5529011B2 (en) * | 1972-12-07 | 1980-07-31 |
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