二线制火灾自动报警系统设计探讨

刘正华（四川中泰联合设计股份有限公司，成都市 610041）

Design of Two‑wire Automatic Fire Alarm System

LIU Zhenghua(Sichuan Zhong Tai United Design Co.,Ltd.,Chengdu 610041，China)

Abstract：Automatic fire alarm systems are significant facilities for protecting personal safety and property safety,and two‑wire automatic fire alarm systems can prevent fires effectively. This paper compares features of two‑wire automatic fire alarm systems and four‑wire ones and their equipment,analyzes the equipment selection of two‑wire automatic fire alarm systems,studies line voltage losses,gives design suggestions for automatic fire alarm system projects,and proposes questions and thoughts.

Key words：two‑wire automatic fire alarm system;alarm current;quiescent current;I / O

module;line voltage loss;cable cross section;“signal line”technology

摘　要：火灾自动报警系统是保障人身安全和财产安全的重要设施，二线制火灾自动报警系统的应用可以有效预防火灾；对比二线制和四线制火灾自动报警系统及设备特点；分析二线制火灾自动报警系统设备选型；探讨线路电压损失问题；给出火灾自动报警系统工程设计建议,并提出问题与思考。

关键词：二线制火灾自动报警系统；报警电流；静态电流；I / O模块；线路电压损失；线缆截面；“信号线类”技术

中图分类号：TU 892                　  文献标识码：A

doi：10.3969 / j. issn.1003 － 8493.2023.01.009