JPH0459638U - - Google Patents
Info
- Publication number
- JPH0459638U JPH0459638U JP10293890U JP10293890U JPH0459638U JP H0459638 U JPH0459638 U JP H0459638U JP 10293890 U JP10293890 U JP 10293890U JP 10293890 U JP10293890 U JP 10293890U JP H0459638 U JPH0459638 U JP H0459638U
- Authority
- JP
- Japan
- Prior art keywords
- level
- stable
- sensor switch
- measurement signal
- 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.)
- Granted
Links
- 238000005259 measurement Methods 0.000 claims 7
- 238000010586 diagram Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Description
第１図は全体のブロツク図、第２図は要部の回
路図、第３図は高レベルオンモード及び低レベル
オンモードにおける動作を説明するためのタイム
チヤート、第４図は光軸合わせを行う際の動作を
説明するタイムチヤート、第５図は感度調節を行
う際の動作を説明するタイムチヤートである。
図面中、１は受光部、２は比較判定部、９は出
力部、１０は電源、１１は負荷、１２はセンサス
イツチ主回路、１３は出力表示灯、１５はモード
選択回路、１８は安定状態判定回路、２６は安定
状態表示回路、２８は安定状態表示灯である。
Figure 1 is an overall block diagram, Figure 2 is a circuit diagram of the main parts, Figure 3 is a time chart to explain the operation in high level on mode and low level on mode, and Figure 4 is a diagram showing optical axis alignment. FIG. 5 is a time chart explaining the operation when adjusting the sensitivity. In the drawing, 1 is a light receiving section, 2 is a comparison/judgment section, 9 is an output section, 10 is a power supply, 11 is a load, 12 is a sensor switch main circuit, 13 is an output indicator, 15 is a mode selection circuit, and 18 is a stable state. A determination circuit, 26 is a stable state display circuit, and 28 is a stable state indicator light.
Claims (1)
象の計測信号レベルと所定の判定レベルとを比較
し、その比較結果に応じてスイツチング素子がオ
ン状態またはオフ状態になつて負荷の通断電を制
御するセンサスイツチ主回路と、 このセンサスイツチ主回路において前記計測信
号レベルが前記判定レベルを上回つたときに前記
スイツチング素子をオン状態にする高レベルオン
モードと前記計測信号レベルが前記判定レベルを
下回つたときに前記スイツチング素子をオン状態
にする低レベルオンモードとを選択するモード選
択回路と、 前記判定レベルよりも上のレベルである安定高
基準レベルと前記判定レベルよりも下のレベルで
ある安定低基準レベルとの２つの基準レベルを有
し前記センサスイツチ主回路が前記高レベルオン
モードにあるときには前記計測信号レベルを前記
安定高基準レベルと比較し、且つ前記センサスイ
ツチ主回路が前記低レベルオンモードにあるとき
には前記計測信号レベルを前記安定低基準レベル
と比較する安定状態判定回路と、 前記安定状態判定回路における比較の結果、前
記計測信号レベルが前記安定高基準レベルよりも
高いとき又は前記計測信号レベルが前記安定低基
準レベルよりも低いときに安定状態判定回路から
の信号に基づき安定状態表示灯を点灯させる安定
状態表示回路とを具備してなる二線式センサスイ
ツチ。[Claim for Utility Model Registration] Compares the measurement signal level of a measurement target such as light, sound waves, or magnetic field connected in series with a load with a predetermined judgment level, and depending on the comparison result, the switching element is turned on or off. a sensor switch main circuit that controls energization/disconnection of a load; and a high level on mode that turns on the switching element when the measurement signal level exceeds the determination level in the sensor switch main circuit. a mode selection circuit that selects a low level on mode in which the switching element is turned on when the measurement signal level falls below the determination level; and a stable high reference level that is a level higher than the determination level. The sensor switch has two reference levels, a stable low reference level which is a level lower than the judgment level, and compares the measurement signal level with the stable high reference level when the sensor switch main circuit is in the high level on mode. and a stable state determination circuit that compares the measurement signal level with the stable low reference level when the sensor switch main circuit is in the low level on mode; and as a result of the comparison in the stable state determination circuit, the measurement signal level is and a stable state display circuit that lights up a stable state indicator based on a signal from a stable state determination circuit when the measured signal level is higher than the stable high reference level or when the measured signal level is lower than the stable low reference level. A two-wire sensor switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990102938U JP2503954Y2 (en) | 1990-09-29 | 1990-09-29 | Two-wire sensor switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990102938U JP2503954Y2 (en) | 1990-09-29 | 1990-09-29 | Two-wire sensor switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0459638U true JPH0459638U (en) | 1992-05-21 |
| JP2503954Y2 JP2503954Y2 (en) | 1996-07-03 |
Family
ID=31847605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990102938U Expired - Lifetime JP2503954Y2 (en) | 1990-09-29 | 1990-09-29 | Two-wire sensor switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2503954Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5437278A (en) * | 1977-08-29 | 1979-03-19 | Omron Tateisi Electronics Co | Indicating circuit for optoelectronic switch |
| JPS5733831A (en) * | 1980-08-07 | 1982-02-24 | Yamatake Honeywell Co Ltd | Direct current contactless switch |
| JPS63260318A (en) * | 1987-04-17 | 1988-10-27 | Sankusu Kk | Photoelectric switch |
-
1990
- 1990-09-29 JP JP1990102938U patent/JP2503954Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5437278A (en) * | 1977-08-29 | 1979-03-19 | Omron Tateisi Electronics Co | Indicating circuit for optoelectronic switch |
| JPS5733831A (en) * | 1980-08-07 | 1982-02-24 | Yamatake Honeywell Co Ltd | Direct current contactless switch |
| JPS63260318A (en) * | 1987-04-17 | 1988-10-27 | Sankusu Kk | Photoelectric switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2503954Y2 (en) | 1996-07-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |