JPH0227501U

JPH0227501U -

Info

Publication number: JPH0227501U
Application number: JP10659288U
Authority: JP
Priority date: 1988-08-11
Filing date: 1988-08-11
Publication date: 1990-02-22

Description

[Brief explanation of the drawing]

第１図はこの考案を具体化した磁気近接センサ
のリードスイツチの配置を示す正面図、第２図は
この考案の磁気近接センサの制御回路を示す回路
図、第３図は磁気近接センサの使用状態を示す断
面図、第４図はリードスイツチ及び制御回路の動
作を示すタイミングチヤート図、第５図はリード
スイツチの配置の別例を示す正面図である。制御回路…７、リードスイツチ…８ａ，８ｂ，
８ｃ，１３ａ，１３ｂ，１３ｃ、緑色ＬＥＤ（第
一の出力制御素子）…９、第一のツエナーダイオ
ード（第一の出力制御素子）１０、赤色ＬＥＤ（
第二の出力制御素子）…１１、第二のツエナーダ
イオード（第二の出力制御素子）…１２。 Figure 1 is a front view showing the arrangement of the reed switch of the magnetic proximity sensor embodying this invention, Figure 2 is a circuit diagram showing the control circuit of the magnetic proximity sensor of this invention, and Figure 3 is the use of the magnetic proximity sensor. FIG. 4 is a timing chart showing the operation of the reed switch and control circuit, and FIG. 5 is a front view showing another example of the arrangement of the reed switch. Control circuit...7, Reed switch...8a, 8b,
8c, 13a, 13b, 13c, green LED (first output control element)...9, first Zener diode (first output control element) 10, red LED (
second output control element)...11, second Zener diode (second output control element)...12.

Claims

[Scope of utility model registration request]

Three reed switches 8a, 8b with equal sensitivity
, 8c, 13a, 13b, and 13c are arranged in parallel with the moving direction of the object to be detected, and the highest sensitivity position of each reed switch is shifted by equal intervals, and each reed switch is connected to the control circuit 7, and the control circuit 7 is the center reed switch 8b, 1
first output control elements 9, 10 that detect and output the closed circuit of 3b, and central reed switches 8b, 13.
a second output control element 11, 12 which detects and outputs the closed circuit of at least one of the reed switches 8a, 8c, 13a, 13c on both sides when the reed switch 8b is open. Proximity sensor.