Application of fire equipment power monitoring system in urban buildings

Abstract: In the 14th Five-Year Plan for 2021, there are also written about the issue
of green circular economy.

In such a context, the construction industry also needs to make changes to achieve the "double carbon" goal, the rapid development of the construction industry, a large number of high-rise buildings have risen from the ground, in order to respond to the country's call for building emission reduction, vigorously develop green buildings at the same time, the fire safety inside the building should also be paid attention to
.

A large number of fire fighting equipment is set up inside the large building, and when a fire occurs, the operating state of these equipment directly affects whether the evacuation crowd can be warned in time and whether the fire
extinguishing can be completed in time.

Keywords: fire equipment power supply; Voltage/Current Sensors; Urban architecture 1, Introduction There are a variety of fire fighting equipment inside modern buildings, such as: fire hydrants, automatic sprinkler fire extinguishing, foam fire extinguishing, fire doors, roller shutter doors, fire elevators, fire emergency lighting and evacuation instructions, etc.
, distributed in all corners
of the building floor.

Whether the operating state of these fire fighting equipment is normal or not directly affects whether the property of the personnel inside the building can be preserved in the event of a
fire.

The fire control room is the control center
of fire fighting facilities in modern large-scale buildings, public gathering place buildings and a class of high-rise buildings.

Controlling the operation of multiple fire protection systems is the key to building fire safety, and it is also related to whether fire prevention can be reasonably prevented, and whether the initial fire can be reasonably controlled and the loss can be reduced in the event of a fire
.

Ensuring that in the event of a fire, automatic fire fighting facilities can operate normally, which plays an important role
in ensuring the fire safety of buildings.

The fire safety of the building depends to a large extent on the quality of the fire fighting equipment, and whether the fire alarm system in the fire control room and the related fire linkage equipment can work normally depends on whether the power supply of the fire fighting equipment can provide power supply
normally.

2.
In order to realize the real-time monitoring of the power supply of fire fighting equipment, reasonably prevent fire and reduce fire hazards, the Fire Bureau of the Ministry of Public Security organized the compilation of the national standard GB 25506 - 2010 "General Technical Requirements for Fire Control Room", which clearly stipulates: "The fire control room shall be equipped with a fire equipment power supply monitor and can display the working status and undervoltage alarm information of the power supply and backup power supply of the fire fighting equipment in the system
。
"Civil Building Electrical Design Standard" GB51348-2019 also clearly pointed out that "buildings with fire control rooms should be provided with fire power monitoring systems.
"3, fire equipment power sensor settings and system composition in order to all kinds of fire equipment power supply reasonable monitoring, AFPM series of sensors, sensors for the scene of a variety of fire equipment power and equipment operating status real-time monitoring and information collection, can always monitor the operation of the scene, timely discovery of alarm information, and remind the duty personnel in the control room to check
.

According to the different types of on-site fire fighting equipment, the corresponding AFPM sensor types are also different, and the sensor specifications can refer to the following table
.

In order to monitor the sensors in different locations in a unified way, we usually need to set up a fire equipment power status monitor in the consumption control center to monitor
the power supply of fire equipment throughout the building.

The power supply status monitor of fire fighting equipment can be connected with multiple fire equipment power supply sensors through two buses to form a complete fire equipment power monitoring system, and the networking is shown in
the following figure.

Usually a two-bus circuit can connect 64 sensors, and the communication distance is within
500 meters.

The real-time working information and communication status of each sensor of the fire equipment power supply will be displayed on the monitor, and once there is a fault, the sound and light alarm will be issued in a relatively fast time, reminding the on-site maintenance personnel to go to the scene in time to view and maintain
.

The power supply status monitor of fire fighting equipment is generally installed in the elimination control room to receive the data of the sensor, and the on-site installation is shown in the following figure
.

Fire equipment power supply sensor is generally installed in the fire equipment power supply end electrical box, used to collect the voltage and current data of the fire protection electrical box, once there is an abnormality, timely reporting, on-site installation as shown in
the following figure.

4.
In order to ensure that the power supply of fire fighting equipment is in good condition at all times, the management and daily inspection of the power supply of fire fighting equipment are particularly important
.

The system plays a very important role
in ensuring the operation of building fire fighting facilities, improving the level of fire safety management and timely detection of fire equipment failures, and preventing and reducing fire hazards.

Reference[1].
Ankerui Electric Co.
, Ltd.
Product Selection Manual.
2020.
01[2].
GB50116-2014 Fire code for building design[S].
[3].
GB25506-2010 "General Technical Requirements for Fire Control Room"[4].
Zhao Hengxin, Hu Kai "The necessity of setting up a power monitoring system for fire fighting equipment" 2016J2617