What are the components of a fire alarm system?
In the fire alarm device, there are some functions such as interrupts, zone displays, fire display panels, etc., which can be used as incomplete alarm devices, which can be regarded as the evolution or supplement of fire alarm controllers. Under specific conditions, the utility model belongs to a fire alarm device as well as a fire alarm controller.The basic function of fire alarm control are: the main power backup power automatic conversion, standby power supply charging function, power failure monitoring function, index of power state function for the detector circuit power supply function, control sensors or system fault alarm, fire soundlight alarm fire alarm clock function unit, memory function. Fire alarm priority fault reporting function, the alarm sound audible alarm mute and again.
In the automatic fire alarm system, a fire control alarm device is used to receive, display and transmit fire alarm signals, and control signals and other auxiliary functions can be sent out, which are called fire alarm devices. Fire alarm controller is one of the most basic. The fire alarm controller should provide a stable power supply for fire detectors; detectors and monitor the working status of the system itself; receiving, conversion, alarm signal processing of fire detector output; alarm; specific time and location of alarm; the implementation of the corresponding auxiliary control and many other tasks at the same time. It is the core component of the fire alarm system.
In the automatic fire alarm system, the automatic or manual fire alarm signal is called trigger. It mainly includes fire detector and manual fire alarm button. A fire detector is a device that can respond to fire parameters (smoke, temperature, fire radiation, gas concentration, etc.) and automatically generate fire alarm signals. According to the different fire parameters, the fire detector is divided into five basic types: temperature sensing fire detector, smoke fire detector, photosensitive fire detector, combustible gas detector and composite fire detector. Different types of fire detectors are suitable for different types of fires and different locations. Manual fire alarm button is a device that generates fire alarm signals manually and fires automatic alarm system. It is also one of the indispensable components of automatic fire alarm system.
In the automatic fire alarm system, when the fire alarm is received, the equipment that can automatically or manually fire the relevant fire equipment and display its status is called fire control equipment. Include fire alarm controller, automatic fire extinguishing system control device, control device of fire hydrant system, control device of smoke exhaust system and air conditioning ventilation system, normally open fire doors, fire shutter control device, lift down control equipment, and fire emergency radio, fire alarm, fire fighting equipment, fire emergency communication evacuation signs and lighting control device control device in whole or in part. Fire control equipment is generally installed in the fire control center, so as to facilitate centralized and unified control. Some fire control equipment is set up on the scene where the fire fighting equipment is located, but the operation signal must be returned to the fire control room, and a centralized and decentralized control mode is adopted.
In an automatic fire alarm system, a device for issuing a fire alarm signal, distinguished from ambient sound and light, is called a fire alarm. It sends a fire alarm signal to the alarm area by means of sound and light, so as to warn people to take safe evacuation, fire fighting and disaster relief measures.
