JPH0289590U - - Google Patents
Info
- Publication number
- JPH0289590U JPH0289590U JP16688688U JP16688688U JPH0289590U JP H0289590 U JPH0289590 U JP H0289590U JP 16688688 U JP16688688 U JP 16688688U JP 16688688 U JP16688688 U JP 16688688U JP H0289590 U JPH0289590 U JP H0289590U
- Authority
- JP
- Japan
- Prior art keywords
- fire
- power supply
- fire alarm
- fire detector
- pair
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 2
- 230000007257 malfunction Effects 0.000 claims 2
- 238000004378 air conditioning Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 claims 1
- 239000000779 smoke Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Fire Alarms (AREA)
Description
第１図はこの考案の火災警報装置の一実施例を
示す全体ブロツク図、第２図は同装置の付加装置
の一実施例を示す回路図、第３図は従来の火災警
報装置を示したブロツク図である。
１……受信機、２，２０〜２３……火災感知器
、３……付加装置、Ｌ，Ｃ……線路、Ｅ１……第
１電源装置、Ｅ２……第２電源装置、ＲＬ……リ
レー、ＡＭ……警報器、Ｒ１〜Ｒ３……抵抗、Ｃ
１〜Ｃ２……コンデンサ、Ｚ１，Ｚ２……ツエナ
ーダイオード、Ｑ１，Ｑ２……トランジスタ、Ｓ
Ｒ……サイリスタ、ＳＥ……火災検出部。
Fig. 1 is an overall block diagram showing an embodiment of the fire alarm system of this invention, Fig. 2 is a circuit diagram showing an embodiment of the additional equipment of the same device, and Fig. 3 is a conventional fire alarm system. It is a block diagram. 1...Receiver, 2,20-23...Fire detector, 3...Additional device, L, C...Line, E1...First power supply device, E2...Second power supply device, RL...Relay , AM...Alarm, R1-R3...Resistance, C
1~C2... Capacitor, Z1, Z2... Zener diode, Q1, Q2... Transistor, S
R...Thyristor, SE...Fire detection section.
Claims (1)
一対の線路に並列に接続され、熱・煙等の火災現
象を検出した時に低インピーダンスで上記一対の
線路間を導通する複数の火災感知器とから構成さ
れ、上記火災感知器の検出時の動作電流を直接ま
たは中継器を介して上記受信機側で検出して火災
警報表示を行う火災警報装置において、勤務時間
帯等に発生する煙草の煙、冷暖房装置による温度
変化等の環境変化にともない誤動作の発生が多い
と予想される上記火災感知器に直列に接続され、
電源電圧の大きさに対応して上記火災感知器の電
源供給の制御を行う付加装置と、上記受信機また
は上記中継器には、誤動作が多く発生する時間帯
に合わせて、上記火災感知器の電源を遮断するよ
うに上記付加装置を制御動作させるため、自動あ
るいは手動により上記一対の線路間の電源電圧を
変化させて供給する可変電源装置とを具備したこ
とを特徴とする火災警報装置。 A plurality of fire detectors are connected in parallel to a pair of power and signal lines extending from a receiver or repeater, and when a fire phenomenon such as heat or smoke is detected, conduction is established between the pair of lines with low impedance. In a fire alarm system that displays a fire alarm by detecting the operating current of the fire detector directly or via a repeater on the receiver side, the fire alarm system detects the operating current at the time of detection of the fire detector, and displays a fire alarm. , connected in series with the fire detector mentioned above, which is expected to frequently malfunction due to environmental changes such as temperature changes due to air conditioning equipment,
An additional device that controls the power supply to the fire detector according to the magnitude of the power supply voltage, and an additional device that controls the power supply of the fire detector to the receiver or the repeater according to the time when many malfunctions occur. A fire alarm device comprising: a variable power supply device that automatically or manually changes and supplies the power supply voltage between the pair of lines in order to control the additional device to cut off the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16688688U JPH0289590U (en) | 1988-12-26 | 1988-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16688688U JPH0289590U (en) | 1988-12-26 | 1988-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0289590U true JPH0289590U (en) | 1990-07-16 |
Family
ID=31454675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16688688U Pending JPH0289590U (en) | 1988-12-26 | 1988-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0289590U (en) |
-
1988
- 1988-12-26 JP JP16688688U patent/JPH0289590U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3973257A (en) | Apparatus for detecting changes in the electrical characteristics of sensor devices | |
| US3757169A (en) | Dynamic ground detector | |
| US5648722A (en) | Apparatus and method for determining the state of an electrical switch within an HVAC system | |
| JPH0289590U (en) | ||
| US4163968A (en) | Supervised loop alarm radio transmitter system | |
| CA1167133A (en) | Selective ultraviolet signal amplifier circuit | |
| US4038649A (en) | Smoke detection alarm device | |
| US3536923A (en) | Network for detecting resistance changes | |
| JPS5922631Y2 (en) | fire alarm equipment | |
| JP2507811Y2 (en) | Gas leak fire alarm equipment repeater | |
| JPS6170294U (en) | ||
| JPH0241741Y2 (en) | ||
| JPH0138709Y2 (en) | ||
| JPS6327267Y2 (en) | ||
| KR200171615Y1 (en) | Composited fire detector | |
| JPS6251484U (en) | ||
| JPH0214079U (en) | ||
| JP3032264B2 (en) | Signal transmission method in fire alarm equipment | |
| JPS6269756U (en) | ||
| JPH0379758B2 (en) | ||
| JPS5812315Y2 (en) | Smoke detectors | |
| JPH0342541Y2 (en) | ||
| JPH0342540Y2 (en) | ||
| JPH0431679Y2 (en) | ||
| JPH07101106B2 (en) | Electric heater temperature monitoring device |