In order to ensure the normal operation of fire-fighting equipment in large buildings, the power supply monitoring system of fire-fighting equipment plays a key role

Encore Hua Nan

【 Abstract 】： When a fire breaks out in the building , Whether all kinds of fire-fighting equipment can operate normally 、 Whether it can play a role is one of the important conditions for the success of initial fire fighting , The stable and reliable power supply of fire-fighting equipment is the guarantee for the normal operation of fire-fighting equipment . Therefore, the monitoring system for the power supply of fire-fighting equipment is very important .

【 key word 】： Fire fighting equipment power status monitor ;AFPM100/B1; voltage / Current sensors ; Big buildings

0  Preface

The functions of automatic fire alarm system and fire extinguishing system set up in modern buildings are becoming more and more perfect , More and more automation , However, after a fire, cases of various fire-fighting equipment not working normally occur frequently . Countless experiences and lessons have proved that , The basic condition for the normal operation of fire-fighting equipment is a stable and reliable fire-fighting power supply . Moreover, the fire caused by abnormal power supply of fire-fighting facilities cannot be put out in time , Expand the disaster , We have to start paying attention to the daily maintenance of fire-fighting facilities .

Whether the fire-fighting equipment in the building can play a role at the critical moment , The core lies in its power supply , In order to ensure the normal power supply of fire-fighting equipment , The power supply needs centralized monitoring and management . However , The power supply wiring of fire-fighting equipment is mostly installed behind the wall , Hidden place between building materials , This also causes the difficulty of artificial monitoring . therefore , It is used to monitor the power supply voltage of fire-fighting equipment 、 The power supply monitoring system of fire-fighting equipment in current state came into being .

AFPM The power supply monitoring system of fire-fighting equipment can reasonably reduce the failure rate of power supply of fire-fighting equipment , Ensure the normal operation of fire-fighting equipment , So as to ensure the normal operation of fire-fighting equipment in case of fire 、 Provide strong technical support for personnel evacuation and rescue ,AFPM The power monitoring system of fire-fighting equipment will be fire-fighting equipment “ Escort ”, Play a positive role in reasonably ensuring the safety of people's lives and national property .

1  summary

The fire-fighting equipment in large buildings is on standby at ordinary times ,  Fire fighting equipment is widely distributed , Many kinds , Large coverage area . Avoid being ignored due to daily management and inspection , The fire-fighting equipment cannot operate normally due to power failure , In order to ensure that the fire-fighting equipment has a reliable and stable power supply , In addition to strengthening daily inspection and maintenance , The power supply monitoring system of fire-fighting equipment is adopted , basis 《 General technical requirements for fire control room 》GB25506-2010 Clear requirements in , The equipment set in the fire control room shall include the fire power monitor . Which made “ The fire power monitor shall be able to display the working status and undervoltage alarm information of the power supply and standby power supply of the fire electrical equipment ” It's mandatory . In order to reduce and prevent fire hazards .

2 Daxin building features and standard requirements

Fire fighting equipment in large buildings mainly includes fire fans 、 Fire shutter door 、 Fire emergency lighting 、 Fire pump 、 Fire elevator 、 Fire fighting smoke exhaust fan and other equipment ; To ensure that these fire-fighting equipment can be used normally in case of fire , Therefore, it is also very important to monitor the power supply of these fire-fighting equipment .

《 Analysis of difficult points and mandatory provisions of building electrical design 》

8.29  What are the principles for setting the monitoring points of the power supply monitoring system of fire-fighting equipment ？

     answer ： In principle, the monitoring point of the power supply monitoring system of fire-fighting equipment should be close to the end load side ：

   （1） All fire power supply system double power automatic switching box main 、 Standby power terminal .

   （2） All single power supplies （ loop ） The power end of the power supply emergency lighting terminal distribution box .

《 Electrical design standard for civil buildings 》GB51348-2019》

 

3 Setting and system composition of power sensor of fire fighting equipment

In order to reasonably monitor the power supply of various fire-fighting equipment ,AFPM Series of sensors , It can reasonably monitor the power supply of various fire-fighting equipment , Call the police in time in case of abnormality , And remind the personnel on duty in the fire control room to check . According to the different types of on-site fire-fighting equipment , Corresponding AFPM The types of sensors are also different , Refer to the following table for sensor specifications .

In order to monitor sensors in different positions , We usually need to set up a fire equipment power status monitor in the fire control center , It is used to monitor the power supply of fire-fighting equipment in the whole building .

AFPM100/B1 The power status monitor of type a fire-fighting equipment adopts wall mounted structure , It has centralized functions 、 Modular design , Its possession 8 Inch industrial tablet , use Windonws XP System , Can support AFPM Fire equipment power monitoring software . Two bus communication mode is adopted with the monitoring sensor , Visually monitor the voltage of the fire equipment power supply in each circuit 、 Current state , Display the location where the fault exists 、 Type information , It is used to remind the monitoring personnel to check the problem , Reasonably reduce the failure rate of power supply of fire-fighting equipment .

The fire equipment power status monitor can be connected with multiple fire equipment power sensors through two buses , Form a complete power supply monitoring system for fire-fighting equipment , The networking is shown in the figure below .

 

Usually a two bus loop can be connected 64 Sensors , The communication distance is 500 Within meters .

The real-time working information and communication status of each sensor of the fire equipment power supply will be displayed on the monitor , Once there is a fault, an audible and visual alarm will be sent immediately , Remind the on-site maintenance personnel to check and maintain on site in time . Refer to the following figure for each software interface of the monitor .

 

4  Conclusion

Design of power supply monitoring system for fire fighting equipment 、 Installation and use , It can significantly improve the reliability of fire-fighting equipment 、 Stability and readiness , Let the fire-fighting equipment achieve a meaningful “ Prevention first , Combination of prevention and elimination ”. The use of fire equipment power supply monitoring system can reasonably reduce the failure rate of fire equipment power supply , Ensure the normal operation of fire-fighting equipment , Effectively ensure the safety of people's lives and property .

 

reference

[1]. Product selection manual of ankerui Electric Co., Ltd .2020.01

[2].GB50116-2014 Code for fire protection design of buildings [S].

[3].GB25506-2010《 General technical requirements for fire control room 》