JPH0214623U - - Google Patents
Info
- Publication number
- JPH0214623U JPH0214623U JP9166188U JP9166188U JPH0214623U JP H0214623 U JPH0214623 U JP H0214623U JP 9166188 U JP9166188 U JP 9166188U JP 9166188 U JP9166188 U JP 9166188U JP H0214623 U JPH0214623 U JP H0214623U
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- danger
- proximity switch
- signal
- 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 6
- 230000035945 sensitivity Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Switch Cases, Indication, And Locking (AREA)
Description
第１図は本考案の一実施例に係る磁気近接スイ
ツチを示す概略断面図、第２図は同近接スイツチ
の回路図、第３図は磁気抵抗素子の出力と発光回
路の出力及び危険領域出力回路の出力及び近接ス
イツチの動作との関係を示す説明図、第４図は複
数の近接スイツチを利用した集中管理システムを
示すブロツク図、第５図は他の近接スイツチの被
検出物及び感応素子を示す概略図である。
１…磁気近接スイツチ、３…ピストン（被検出
物）、４…マグネツト、７…磁気抵抗素子（感応
素子）、８…緑色発光ダイオード（発光体）、９
…赤色発光ダイオード（発光体）、１０…電源線
（プラス側出力線）、１１…接地線（マイナス側
出力線）、１３…検出回路、１４…第一のオペア
ンプ（コンパレータ）、１５…第二のオペアンプ
（コンパレータ）、１６…第一の発光回路、１７
…第二の発光回路、２２…出力回路、２２ａ…バ
イパス線、２３…トランジスタ、２６…危険領域
出力回路、２６ａ…危険感度専用出力線、２８ａ
…オープンコレクタ。
Fig. 1 is a schematic cross-sectional view showing a magnetic proximity switch according to an embodiment of the present invention, Fig. 2 is a circuit diagram of the proximity switch, and Fig. 3 is the output of the magnetoresistive element, the output of the light emitting circuit, and the dangerous area output. An explanatory diagram showing the relationship between the output of the circuit and the operation of the proximity switch. Fig. 4 is a block diagram showing a centralized control system using multiple proximity switches. Fig. 5 shows the detected objects and sensing elements of other proximity switches. FIG. 1... Magnetic proximity switch, 3... Piston (detected object), 4... Magnet, 7... Magnetoresistive element (sensing element), 8... Green light emitting diode (light emitter), 9
...Red light emitting diode (light emitting body), 10...Power line (positive output line), 11...Grounding wire (minus side output line), 13...Detection circuit, 14...First operational amplifier (comparator), 15...Second operational amplifier (comparator), 16...first light emitting circuit, 17
...Second light emitting circuit, 22...Output circuit, 22a...Bypass line, 23...Transistor, 26...Dangerous area output circuit, 26a...Danger sensitivity dedicated output line, 28a
…Open collector.
Claims (1)
生ずる感応素子７と、この感応素子７に対する被
検出物３の位置に応じて最適感度検知帯域と危険
感度検知帯域とを検出する検出回路１３と、その
検出信号に基づきこれらの帯域でそれぞれ発光体
８，９を作動させる発光回路１６，１７と、プラ
ス側出力線１０とマイナス側出力線１１を２線式
出力形態でオン・オフする出力回路２２とからな
る２線式近接スイツチにおいて、 さらに前記危険感度検知帯域で危険信号出力Ｓ
を発するオープンコレクタ形式の危険領域出力回
路２６を付加したことを特徴とする近接スイツチ
。[Claims for Utility Model Registration] A sensing element 7 that produces an output of a magnitude corresponding to the distance to the detected object 3, and an optimal sensitivity detection band and danger sensitivity depending on the position of the detected object 3 with respect to the sensing element 7. A detection circuit 13 that detects the detection band, a light emitting circuit 16, 17 that operates the light emitters 8, 9, respectively, in these bands based on the detection signal, and a positive output line 10 and a negative output line 11 are connected to two wires. In a two-wire proximity switch consisting of an output circuit 22 that turns on and off in a formula output mode, a danger signal output S is further provided in the danger sensitivity detection band.
1. A proximity switch characterized in that an open collector type dangerous area output circuit 26 is added that emits a signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988091661U JPH0628741Y2 (en) | 1988-07-11 | 1988-07-11 | Proximity switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988091661U JPH0628741Y2 (en) | 1988-07-11 | 1988-07-11 | Proximity switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0214623U true JPH0214623U (en) | 1990-01-30 |
| JPH0628741Y2 JPH0628741Y2 (en) | 1994-08-03 |
Family
ID=31316129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988091661U Expired - Lifetime JPH0628741Y2 (en) | 1988-07-11 | 1988-07-11 | Proximity switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0628741Y2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4923566U (en) * | 1972-06-05 | 1974-02-28 | ||
| JPS59130027A (en) * | 1983-01-18 | 1984-07-26 | 株式会社山武 | Proximity switch |
| JPS6024019U (en) * | 1983-07-26 | 1985-02-19 | 日立電線株式会社 | Coaxial cable with test connection line |
| JPS6150343U (en) * | 1984-09-05 | 1986-04-04 |
-
1988
- 1988-07-11 JP JP1988091661U patent/JPH0628741Y2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4923566U (en) * | 1972-06-05 | 1974-02-28 | ||
| JPS59130027A (en) * | 1983-01-18 | 1984-07-26 | 株式会社山武 | Proximity switch |
| JPS6024019U (en) * | 1983-07-26 | 1985-02-19 | 日立電線株式会社 | Coaxial cable with test connection line |
| JPS6150343U (en) * | 1984-09-05 | 1986-04-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0628741Y2 (en) | 1994-08-03 |