The demand for intelligent fire alarm system is urgent

As an enemy to the survival of human beings, fire has attracted more and more attention. The design of a fire automatic alarm and fire protection system with high reliability and real-time performance is a need for the development of science and technology society, and it is also a need to ensure people's normal life. From the perspective of the development process, fire automatic alarm technology can be roughly divided into three categories: multi-line fire alarm systems, bus-type fire alarm systems, and intelligent wireless fire alarm systems.

According to reports, at present, the automatic fire detection and alarm system has a wide range of applications and has become a must-have device in many places, playing a security role. However, in the practical application of fire detection and alarm system, there are also many problems. The existing product quality of the market is uneven, there is a single product function, reliability and stability are not high; only a certain kind of fire parameters are detected, and there is an error Reported missing news and many other issues. With the continuous development of microprocessor technology, sensing technology, communication technology, control technology and artificial intelligence technology, the main development direction of fire detection and alarm systems is toward high reliability, low false alarm miss rate and networked and intelligent direction. development of. Intelligent wireless fire alarm system is the main research direction.

The fire alarm system is generally composed of fire detectors, area alarms and centralized alarms; it can also be linked with various fire-fighting facilities and communication devices according to the requirements of the project to form a central control system. That is, a complete fire control system consists of automatic alarm, automatic fire extinguishing, safe evacuation induction, system process display, and fire file management.

Fire detectors are instruments that detect fires. Due to the fires occurring, smoke, heat, and flare will be accompanied. The smoke, heat and light can be turned into electrical signals through the detector or the automatic fire extinguishing system can be started to extinguish the fire in time. The zone alarm can convert the signal from the detector on the floor to an audible and visual alarm and display the room number of the fire on the screen. At the same time, it can also monitor the centralized alarm devices on several floors (if the entire building is monitored, it is set on fire protection). The control center) outputs the signal or controls the automatic fire extinguishing system. Centralized alarm means that the received signal is displayed in an acousto-optic manner. The floor and room number of the fire are also displayed on the screen. The clock on the plane records the time of the first alarm. The local telephone can be quickly used. Give instructions and alert the fire brigade. In addition, it is also possible to control the relevant fire suppression system or to transmit fire signals to the fire control room.

(I) Trigger Device In the automatic fire alarm system, devices that generate fire alarm signals automatically or manually are called triggers, and mainly include fire detectors and manual fire alarm buttons. Fire detectors are devices that can respond to fire parameters (such as smoke, temperature, flame radiation, gas concentration, etc.) and automatically generate fire alarm signals. According to the different fire parameters, fire detectors are divided into five basic types: heat detectors, smoke detectors, light detectors, combustible gas detectors, and composite fire detectors. Different types of fire detectors are suitable for different types of fires and different locations. The manual fire alarm button is a device that generates a fire alarm signal manually and activates the fire automatic alarm system. It is also an indispensable part of the fire automatic alarm system.

(2) Fire alarm devices In fire automatic alarm systems, fire control alarms are used to receive, display and transmit fire alarm signals, and control signals that can send out control signals and other auxiliary functions are called fire alarm devices. Fire alarm controller is one of the most basic ones. The fire alarm controller is responsible for providing stable working power for the fire detectors; monitoring the working status of the detectors and the system itself; receiving, converting, and processing the alarm signals output by the fire detectors; performing sound and light alarms; indicating the specific locations of the alarms and Time; simultaneously perform various tasks such as auxiliary control. It is a core part of the fire alarm system.

In fire alarm devices, there are also alarm devices such as interrupters, zone displays, fire display panels, etc., which can be regarded as the evolution or addition of fire alarm controllers. Applied under specific conditions, the fire alarm controller is a fire alarm device.

The basic functions of the fire alarm controller are: main power, automatic conversion of standby power, standby power charging function, power failure monitoring function, power supply status indicator function, power supply for the detector loop, and sound and light alarm of the controller or system fault. , Fire alarm, light alarm, fire alarm memory function, clock unit function, fire alarm priority report fault function, sound alarm sound silencer and re-aerial alarm function.

(iii) Fire alarm devices In fire alarm systems, devices that emit fire alarm signals that are different from ambient sound and light are called fire alarm devices. It sends fire alarm signals to the alarm area by means of sound and light sounds to warn people to adopt safe evacuation and fire fighting and disaster relief measures.

(4) Fire control equipment In the automatic fire alarm system, when receiving a fire alarm, the equipment that can automatically or manually start the relevant fire fighting equipment and display its status is called fire control equipment. Mainly include fire alarm controller, control device of automatic fire extinguishing system, control device of indoor fire hydrant system, control device of smoke prevention and smoke exhaust system and air-conditioning ventilation system, normally open fire door, control device of fire shutter, and elevator fall control Equipment, and some or all of the control devices such as fire emergency broadcasting, fire alarm devices, fire communication equipment, fire emergency lighting and evacuation indicator control devices. Fire control equipment is generally installed in the fire control center to facilitate centralized and unified control. Some fire control equipment is also installed on the site where the fire fighting equipment is controlled. However, the action signal must be returned to the fire control room to implement a combination of centralized and decentralized control.

(E) The power fire automatic alarm system belongs to the fire-fighting electrical equipment. The main power source should be fire-fighting power, and the standby power should be battery. Apart from supplying power to the fire alarm controller, the system power supply also supplies power to the system-related fire control equipment.

Conclusion The application of fire has played an important role in the development of human civilization, and fire has always threatened human life, resulting in major loss of life and property. In recent years, with the rapid development of the country’s economy and the further increase in the degree of urbanization, the number of densely populated places has continuously increased, and the frequency of fires has become more and more frequent, requiring all sectors of society to pay close attention to eliminating hidden dangers in time and ensuring fire safety. Intelligent fire alarm system is an urgently needed product in the market. In the face of unlimited business opportunities, businesses must keep up with technology to keep up with the pace of safety.