JPS60100894U

JPS60100894U - Fire alarm equipment in tunnels, etc.

Info

Publication number: JPS60100894U
Application number: JP15076184U
Authority: JP
Inventors: 亨田村; 安川　誠
Original assignee: 能美防災工業株式会社
Priority date: 1984-10-05
Filing date: 1984-10-05
Publication date: 1985-07-09
Also published as: JPS6222959Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図Ａ、　Ｂはこの考案の実施例において使用する２
種の広域ふく射式火災感知器の構成図、第２図は第１図
Ａ、　Ｂに示す感知器を従来の狭域ふく射式火災感知器
の配置の仕方に従って道路トンネル内に配置した場合の
配置図、第３図は道路トンネル内における第１図Ａ、　
Ｂに示す火災感知器のこの考案による配置図、第４図は
第１図Ａに示す感知器を、第５図は第１図Ｂに示す感知
器を、それぞれ第３図に示すように道路トンネル内に配
置した場合、各感知器の出力端子に信号線路を通じてつ
ながれる受信機内の火災地区判別回路の回路図、第６図
はこの考案の一実施例全体の簡略化した回路図である。Ｄ、　Ｄ工〜Ｄｎ・・・・・・広域ふく射式火災感知器
、１・・・・・・Ｄ、　Ｄ□〜Ｄｎの低感度監視範囲、
ｈ・・・・・・Ｄ。Ｄ１〜Ｄｎの高感度火災監視範囲、１，１／２゜２、・
・・８・・・・・・火災警戒地区。１、　　　　十４図カｏ、４、’、−’　　　　　　　　　ｎｕ−■ ｌ＋ｌ　　　　　Ｉ　　ｒ−ｍ−−し一ノＩｌｌ　　　
　　　１ｍ−ノ１１′才５１斥　　　　　・］　　−置；　「用ニアー嘔Figure 1 A and B are used in the embodiment of this invention.
Figure 2 is a diagram of the configuration of a wide-area fire detector, and shows the arrangement of the detectors shown in Figures 1A and B in a road tunnel in accordance with the conventional arrangement of narrow-area fire detectors. Figure 3 is Figure 1A in the road tunnel,
Fig. 4 shows the arrangement of the fire detector according to this invention, Fig. 4 shows the sensor shown in Fig. 1A, Fig. 5 shows the sensor shown in Fig. 1B, and When placed in a tunnel, a circuit diagram of a fire area discrimination circuit in the receiver is connected to the output terminal of each sensor through a signal line. FIG. 6 is a simplified circuit diagram of an entire embodiment of this invention. D, D engineering ~ Dn... wide area radiation type fire detector, 1... D, low sensitivity monitoring range of D□ ~ Dn,
h...D. Highly sensitive fire monitoring range from D1 to Dn, 1,1/2°2,・
・・・8・・・Fire warning area. 1. Figure 14 Kao, 4, ', -' nu-■ l+l I r-m--shiichinoIll
1m - 11' years old 51 years old ・ ] - place;

Claims

[Scope of Claim for Utility Model Registration] 1. A low-sensitivity fire detection section that monitors a low-sensitivity monitoring range in the center near the fire detector, and a high-sensitivity fire detection section that monitors high-sensitivity monitoring ranges on the left and right that are far from the fire detector. Multiple wide-area fire detectors are placed consecutively in a long fire warning area such as a tunnel so that the high-sensitivity monitoring ranges of adjacent detectors overlap each other. A fire alarm system for use in tunnels, etc., characterized in that a low-sensitivity monitoring range and a high-sensitivity monitoring range where adjacent detectors overlap each other can be used to monitor fire as separate fire warning areas. 2. Fire alarm in tunnels, etc. as set forth in Claim 1 of the Utility Model Registration Claim, in which fires occurring in the low-sensitivity monitoring range of each fire detector can be detected earlier than fires occurring in the high-sensitivity monitoring range. Facility.