Application of AFPM100 Fire Equipment Power Monitoring System in Maintenance Base Project of Air China Chongqing Branch

This paper introduces the functions and significance of the AFPM100 fire equipment power status monitor through the introduction of the power monitoring system of the maintenance base project of Air China Chongqing Branch.
Yang Junjun

Ankerui Electric Co., Ltd. Shanghai Jiading



1 Introduction

The maintenance base of Air China Chongqing Branch is called Chongqing Maintenance of Air China Engineering Technology Branch. The address is located at Chongqing Jiangbei International Airport, which mainly provides ground handling services for Air China aircraft.

2. System requirements analysis

Detecting the overvoltage, undervoltage, phase loss, power interruption and other signals of the fire equipment power supply, sound and light signal alarm, accurately report the fault line address, and monitor the change of the fault point. Store various fault and operational test signals to display system power status.

3. Reference standard

Recently, in order to increase the intensity of power supply monitoring and control of fire-fighting equipment, the state has successively formulated or revised a number of relevant standards and regulations to strengthen the prevention of power supply for fire-fighting equipment. There are:

(1). GB28184-2011 "Fire Equipment Power Monitoring System".

(2). GB25506-2010 "General Technical Requirements for Fire Control Room".

4. System composition

The fire protection equipment power monitoring system of the maintenance base project of Air China Chongqing Branch consists of fire equipment power status monitors and sensors. The communication bus of this project has access to 4 communication buses. The bus is connected to the wall-mounted background in the fire-fighting distribution box, and the main artery of the fire-fighting equipment power monitoring system is formed. The sensor in the cabinet is powered by 24V DC through the host. The above describes a set of power supply monitoring system for fire protection equipment with stable signal and reliable accuracy. The system networking is divided into three layers:

1) Station management

The management personnel of the station control management team for the fire equipment power monitoring system is the direct window of human-computer interaction and the uppermost part of the system. Mainly composed of system software and necessary hardware equipment, such as display screen, UPS power supply and so on. The monitoring system software calculates, analyzes and processes various types of data information on the site, and responds to the on-site transportation situation by means of text, digital display, sound, and indicator light.

Monitoring host: used for data collection, processing, and data forwarding. Provides data interfaces for system management, maintenance, and analysis within and outside the system.

UPS: Ensure the normal power supply of the computer monitoring system, and ensure the normal operation of the station management management equipment when the whole system has power supply problems.

The background monitoring device is set in the control room.
2) Network communication layer

Communication medium: The system mainly adopts flame-retardant shielded twisted pair cable, and realizes real-time communication between field device and host computer by RS485 interface and MODBUS communication protocol.

Power medium: The 24V power supply is supplied to all sensors in the field by the host computer through the flame-retardant two-core cable, thus ensuring that the module can keep working under any circumstances.

3) Field device layer

The field device layer is a data acquisition terminal, mainly composed of AFPM3-2AV series sensors.

The system structure topology is as follows:











5. Fire equipment power equipment





5.1, AFPM100 fire equipment power monitoring background:

The main technical parameters

power supply

● Main power supply: AC220V 50Hz (allows 85%-110% range change)

● Backup power supply: When the main power supply is low voltage or power failure, maintain the monitoring equipment working time ≥8h

● The monitor provides DC24V power for the connected modules (voltage/current signal sensors)

Work system

24-hour work schedule

communication method

Modbus-RTU communication protocol, RS485 half-duplex bus mode, transmission distance of 500m (if it exceeds the transmission distance through the repeater).

Monitoring capacity

≤128 points

Operational rating

● Daily duty level: real-time status monitoring, history query.

● Monitoring operation level: real-time status monitoring, history query, remote reset of detectors.

● System management level: real-time status monitoring, history query, remote reset of detectors, remote modification of detector parameters, system parameter setting and modification of monitoring equipment, operator addition and deletion.

Environmental conditions

● Workplace: fire control room, or installed side by side with fire control console

● Working environment temperature: -10 °C ~ +55 °C

● Working environment relative humidity: ≤95% without condensation

● Altitude: ≤2500m

● Pollution degree: Class III, installation category: Level III

Main components

● Display mode: 320*240 dot matrix LCD;

● Input and output module: built-in remote intelligent I / O module;

● Sound and light alarm module: built-in speaker, buzzer and LED indicator;

● Backup power: DC24V, 24Ah

5.2, AFPM-ZJQ fire equipment power repeater

The AFPM-ZJQ firefighting equipment power monitoring repeater (hereinafter referred to as the repeater) is suitable for systems where the monitor (host) and the field sensor (monitor module) communicate far. The repeater not only increases the communication distance of the system, but also supplies power to the connected field sensor (monitor module) to solve the attenuation of the communication signal and power output due to the long distance. The repeater transmits the power information of the connected field module and the repeater to the monitor (host) through the communication bus. This product complies with GB 28184-2011 "Fire Equipment Power Monitoring System" and GB 25506-2010 "Fire Control Room General Technical Requirements" standard.

5.3, AFPM3-2AV sensor

AFPM3-2AV three-phase AC dual-supply voltage sensor (monitor module) (hereinafter referred to as module) can collect the voltage value of the AC power of the monitored equipment, and upload it to the monitor (monitoring host) (hereinafter referred to as the monitoring host) through RS485 communication, monitoring The host can judge the voltage status of the monitored power supply, such as overvoltage and undervoltage. The data can be instructed by the monitoring host to indicate the corresponding power failure type and emit an audible and visual alarm signal.

6 system function

Monitoring alarm function

● The status of the power circuit switch of the monitored equipment

● Working status of the monitored equipment power supply (voltage, current and alarm status information)

● Alarm response time: ≤100s

● Alarm sound signal: It can be manually eliminated. When there is alarm signal input again, it can be started again.

● Alarm light signal: the red LED indicator is always on

Control output function

● Remote remote control of alarm relays of individual or all monitored equipment

● Monitor control output: normally open passive contact, capacity: AC250V 3A or DC30V 3A

Fault alarm function

● The connection between the monitor and the module (voltage/current signal sensor) is open and shorted

● Monitor mains undervoltage (≤80% mains voltage) or overvoltage (≥110% mains voltage)

● The connection between the monitor and its remote power supply is open and shorted.

● When the above fault occurs in the monitor, it can emit an acousto-optic fault alarm signal that is clearly different from the monitoring alarm signal.

● Fault alarm response time: ≤100s

● Fault alarm sound signal: manual elimination, when the alarm signal input again, can start again

● Fault alarm light signal: yellow LED indicator is always on

● The normal operation of the non-faulty loop is not affected during the fault

Self-test function

● Connection check: open and short circuit of communication line and split power line

● Device self-test: manual check or system self-test

● Self-testing time: ≤60s

Alarm recording function

● Record 10000 related fault alarm information

● Alarm type: fault type, time of occurrence, fault description

● Alarm event query

● Alarm record printing

6. Conclusion

With the development of intelligent buildings and the widespread use of electricity, people's awareness of safety is becoming higher and higher. The installation of fire protection equipment power monitoring system in public buildings is an inevitable trend of intelligent construction. The fire equipment power system is conducive to the discovery of safety hazards and timely handling of safety hazards. It has the same meaning as fire exits, fire hydrants, fire extinguishers and other equipment. Since the system was put into operation, many hidden dangers have been discovered and rectified, which provided a scientific basis for the fire management of the project and has been well received by customers.

The firefighting equipment power monitoring system of Air China Chongqing Branch Maintenance Base consists of fire equipment power monitoring device AFPM100, fire equipment power repeater and sensor AFPM3-2AV. The AFPM100 fire equipment power monitoring system is an industrial grade hardware/software system that is independently developed by the company to receive field device signals such as fire equipment power sensor and to realize alarm, monitoring and management of the protected electrical circuit.



references

[1]. Ren Zhicheng Zhou Zhong. Principles and Application Guidelines of Power Electrical Measurement Digital Instrumentation [M]. Beijing. China Electric Power Press. 2007. 4

[2]. Zhou Zhong. Application of power meter in electric energy metering of large public buildings [J]. Modern Building Electric 2010. 6



About the author: Yang Junjun, female, undergraduate. Position: Now working for Ankerui Electric Co., Ltd., contact number, mobile phone, QQ
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn

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