JPS6347994Y2 - - Google Patents
Info
- Publication number
- JPS6347994Y2 JPS6347994Y2 JP2292583U JP2292583U JPS6347994Y2 JP S6347994 Y2 JPS6347994 Y2 JP S6347994Y2 JP 2292583 U JP2292583 U JP 2292583U JP 2292583 U JP2292583 U JP 2292583U JP S6347994 Y2 JPS6347994 Y2 JP S6347994Y2
- Authority
- JP
- Japan
- Prior art keywords
- fire
- indicator light
- operation indicator
- fire detector
- detector
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000004397 blinking Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Fire-Detection Mechanisms (AREA)
- Alarm Systems (AREA)
- Fire Alarms (AREA)
Description
【考案の詳細な説明】
この考案は、火災報知装置に関し、特に火災感
知器の動作表示灯を監視状態表示灯にも兼用した
装置に関する。[Detailed Description of the Invention] This invention relates to a fire alarm device, and particularly to a device in which the operation indicator light of a fire detector also serves as a monitoring status indicator light.
従来、火災報知装置は、第１図のように受信機
Ｒの直流電源より、火災検出用継電装置Ａを介し
て伸びた地区線路l1，l0を有し、この地区線路間
に動作表示灯LEDを設けた火災感知器Ｄが並列
に複数個接続されている。この火災感知器Ｄが火
災を感知して動作すると、動作表示灯LEDを点
灯させるとともに、受信機Ｒの火災検出用継電装
置Ａを動作させ、火災表示灯あるいはベル等（図
示せず）を表示、鳴動させる。 Conventionally, a fire alarm system has district lines l 1 and l 0 extending from the DC power supply of receiver R via fire detection relay device A, as shown in Fig. 1, and the operation between these district lines is A plurality of fire detectors D each equipped with an indicator light LED are connected in parallel. When this fire detector D detects a fire and operates, it lights up the operation indicator LED and also operates the fire detection relay device A of the receiver R to turn on the fire indicator light or bell (not shown). Display and sound.
このような従来の火災報知装置においては、常
時火災感知器が正常に監視状態にあることが確認
できなかつた。 In such conventional fire alarm devices, it has not been possible to confirm that the fire detector is normally being monitored at all times.
本考案は、上記点を解決したものであつて、以
下にその一実施例を示す第２図により詳細に説明
する。なお、第１図と同一部品は同一記号で示
す。 The present invention solves the above problems and will be explained in detail below with reference to FIG. 2 showing an embodiment thereof. Note that the same parts as in FIG. 1 are indicated by the same symbols.
第２図において、電源端子間には火災検出用継
電装置Ａの常閉接点ａを介してパルス発振器
OSCが接続され、このパルス発振器OSCのパル
ス出力は、地区線路l1，l0間に火災監視電圧に重
畳して印加されている。なお、このパルス電圧は
監視電圧よりも高く、かつ火災感知器Ｄの最大印
加可能電圧よりも低く設定される。 In Figure 2, a pulse oscillator is connected between the power supply terminals via the normally closed contact a of the fire detection relay device A.
An OSC is connected, and the pulse output of this pulse oscillator OSC is applied between the district lines l 1 and l 0 superimposed on the fire monitoring voltage. Note that this pulse voltage is set higher than the monitoring voltage and lower than the maximum voltage that can be applied to the fire detector D.
火災感知器Ｄには、スイツチング回路SCRと
並列にツエナーダイオードＺと、抵抗ｒとの直列
回路から成る過電圧検出回路Ｏが接続されてい
る。この過電圧検出回路Ｏのツエナーダイオード
Ｚのツエナー電圧は監視電圧より高く、かつパル
ス発振器OSCのパルス電圧より低く設定される。
なおこの過電圧検出回路Ｏは、所定電圧以上で導
通する回路であれば良く、この実施例の回路に限
定されるものではない。 The fire detector D is connected in parallel with the switching circuit SCR to an overvoltage detection circuit O consisting of a series circuit of a Zener diode Z and a resistor r. The Zener voltage of the Zener diode Z of this overvoltage detection circuit O is set higher than the monitoring voltage and lower than the pulse voltage of the pulse oscillator OSC.
Note that this overvoltage detection circuit O may be any circuit that conducts at a predetermined voltage or higher, and is not limited to the circuit of this embodiment.
通常、火災感知器Ｄの火災監視状態において
は、パルス発振器OSCから地区線路l1に印加され
たパルス電圧によつて、火災感知器Ｄ内の過電圧
検出回路Ｏは間欠的に導通され、したがつて、動
作表示灯LEDはパルス点灯される。 Normally, when the fire detector D is in the fire monitoring state, the overvoltage detection circuit O in the fire detector D is intermittently turned on by the pulse voltage applied from the pulse oscillator OSC to the district line l1 . Then, the operation indicator LED is lit in pulses.
火災感知器Ｄが動作すると、火災感知器Ｄのス
イツチング回路SCRが導通し、線路l1，l0間は短
絡状態にされ、動作表示灯LEDが点灯する。ま
た受信機Ｒの火災検出用継電装置Ａが動作し、常
閉接点ａを開放してパルス発振器OSCへの電源
供給はしや断される。 When the fire detector D operates, the switching circuit SCR of the fire detector D becomes conductive, the lines l 1 and l 0 are short-circuited, and the operation indicator LED lights up. In addition, the fire detection relay device A of the receiver R is activated, opening the normally closed contact a, and the power supply to the pulse oscillator OSC is immediately cut off.
上述の如く、本考案の火災報知装置は、新たな
線路の増設もなく、簡単な回路を附加することに
よつて火災感知器の動作表示灯を常時点滅して監
視状態を確認できる火災報知装置である。 As mentioned above, the fire alarm system of the present invention is a fire alarm system that does not require the installation of new lines and can confirm the monitoring status by constantly blinking the operation indicator light of the fire detector by adding a simple circuit. It is.
第１図は従来の火災報知装置の回路図、第２図
はこの考案の一実施例を示す火災報知装置の回路
図をそれぞれ示す。
Ａ……火災検出用継電装置、OSC……パルス
発振器、LED……動作表示灯、Ｏ……過電圧検
出回路。
FIG. 1 is a circuit diagram of a conventional fire alarm system, and FIG. 2 is a circuit diagram of a fire alarm system showing an embodiment of this invention. A...Fire detection relay device, OSC...Pulse oscillator, LED...Operation indicator light, O...Overvoltage detection circuit.
Claims (1)
動作表示灯を有する火災感知器が接続された火災
報知装置において、上記火災受信機内に有し、上
記地区線路にパルス電圧を重畳して印加するパル
ス発振器と、上記火災感知器の動作表示灯と直列
に接続された過電圧検出回路とを設け、火災監視
時上記動作表示灯を間欠的に点灯させることを特
徴とする火災報知装置。 In a fire alarm system in which a fire detector having an operation indicator light is connected between a district line extending from a DC power source of a fire receiver, the fire detector is provided in the fire receiver and a pulse voltage is applied in a superimposed manner to the district line. A fire alarm device comprising a pulse oscillator and an overvoltage detection circuit connected in series with the operation indicator light of the fire detector, and intermittently lights the operation indicator light during fire monitoring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2292583U JPS59130190U (en) | 1983-02-21 | 1983-02-21 | fire alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2292583U JPS59130190U (en) | 1983-02-21 | 1983-02-21 | fire alarm device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59130190U JPS59130190U (en) | 1984-09-01 |
| JPS6347994Y2 true JPS6347994Y2 (en) | 1988-12-09 |
Family
ID=30154015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2292583U Granted JPS59130190U (en) | 1983-02-21 | 1983-02-21 | fire alarm device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59130190U (en) |
-
1983
- 1983-02-21 JP JP2292583U patent/JPS59130190U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59130190U (en) | 1984-09-01 |
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