JPH0420193U

JPH0420193U -

Info

Publication number: JPH0420193U
Application number: JP5890190U
Authority: JP
Priority date: 1990-06-04
Filing date: 1990-06-04
Publication date: 1992-02-20

Description

[Brief explanation of the drawing]

第１図は本考案に係るブザータイマーオフ機能
付き警報盤の電気回路図、第２図はその変更実施
例の電気回路図、第３図は従来の警報盤の電気回
路図である。１……電源回路、２……入力部、３……制御部
、４……記憶回路、５……方形波発振回路、６…
…表示部、７……タイマー部、８……ブザー部、
ＢＺ……警告用ブザー、ＩＣ_３，ＩＣ_４，ＩＣ_５……ＡＮＤ回路、ＩＣ_６……ＯＲ回路、ＩＣ_７，
ＩＣ_８……論理和素子、ＬＥＤ_１……警報表示灯
、Ｓ_１〜Ｓ_４……検出スイツチ、Ｓ_５，Ｓ_６……
外部無電圧ａ接点、ＳＷ_１……ブザー停止スイツ
チ、ＳＷ_２……タイマーモード切り替えスイツチ
、Ｔ_１〜Ｔ_８……警報信号入力端子、Ｔ_９〜Ｔ_１
３……外部接続端子、Ｔ_ｒ１〜Ｔ_ｒ３……トラン
ジスタ。 FIG. 1 is an electrical circuit diagram of an alarm panel with a buzzer timer off function according to the present invention, FIG. 2 is an electrical circuit diagram of a modified embodiment thereof, and FIG. 3 is an electrical circuit diagram of a conventional alarm panel. DESCRIPTION OF SYMBOLS 1... Power supply circuit, 2... Input section, 3... Control section, 4... Memory circuit, 5... Square wave oscillation circuit, 6...
...Display section, 7...Timer section, 8...Buzzer section,
BZ...warning buzzer, IC ₃ , IC ₄ , IC ₅ ...AND circuit, IC ₆ ...OR circuit, IC ₇ ,
IC ₈ ... OR element, LED ₁ ... Alarm indicator light, S ₁ to S ₄ ... Detection switch, S ₅ , S ₆ ...
External non-voltage a contact, SW ₁ ... Buzzer stop switch, SW ₂ ... Timer mode changeover switch, T ₁ - _{T 8} ... Alarm signal input terminal, T ₉ - T _{1
3} ...External connection terminal, _Tr1 to _Tr3 ...Transistor.

Claims

[Scope of utility model registration request]

This is an alarm panel that notifies an abnormal state by displaying an alarm with an indicator light and warning with a sounding device when one of the plurality of detection switches that detect an abnormality is closed, and which starts counting from the time when the detection switch is closed. A buzzer that automatically stops an alarm at a predetermined time after the alarm is issued, comprising a timer circuit that starts the alarm, and a ringing stop means that stops the ringing of the ringing device based on the count-up output of the timer circuit. In an alarm panel equipped with a timer off function, if one of the above detection switches is closed and any other detection switch is closed while the buzzer timer off function is operating, the buzzer timer off function will be activated. A buzzer timer off means is provided to reset the count and make it sound again for a predetermined period of time, and the buzzer timer off means is logically summed with a differentiating circuit for differentiating the output due to the closing of each detection switch, and the outputs of these differentiating circuits. An alarm panel with a buzzer timer off function, comprising: a logical OR element that outputs an output to the above-mentioned timer circuit;