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This paper briefly describes the composition principle of the fire protection equipment power monitoring system, and analyzes the design basis and related specifications of the fire equipment power monitoring system in the application. Finally, through the introduction of the Ankerui fire equipment power monitoring system in the Huafeng textile project, the realization of the function of the fire control equipment power monitoring system and its significance are expounded.
Yang Junjun

Ankerui Electric Co., Ltd. Shanghai Jiading



0 Overview

Jiangsu Huafeng Textile Co., Ltd. is a comprehensive group company integrating textile, printing, dyeing and sales. It has been engaged in the field of tooling for more than ten years and has passed ISO9001-2000 international quality management system certification in Shanghai and surrounding areas. With a high reputation, the printing and dyeing company covers an area of ​​more than 40 acres, with domestic advanced long-distance water line, mercerizing machine, pre-shrinking machine, sanding machine, high temperature and high pressure jet dyeing machine, high temperature jigger, annual production capacity of 36 million Meter.

This project is the AFPM series monitoring module of Huafeng Textile's 11 fire protection equipment power monitoring modules. The project is mainly responsible for monitoring the voltage status of the fire-fighting equipment distributed on the site, and promptly reminding the duty-keeping personnel in the control room to prevent the fire-fighting equipment from being put into normal use when the fire occurs.

Huafeng Textile has fire equipment power monitoring module 11 AFPM series installed on the floor. The field instrument is connected to the AFPM100/B wall-mounted fire-fighting equipment power monitoring system of the control center by bus.

1 reference standard

In recent years, in order to prevent fire-fighting equipment from being used properly during the fire, the state has successively formulated or revised a number of relevant standard specifications to strengthen the monitoring of fire-fighting equipment. There are:

1.1. GB25506-2010 "General technical requirements for fire control room", in the provisions of 5.7 fire power monitors should meet the following requirements:

a) It should be able to display the working status and fault alarm information of the power supply and backup power of the fire-fighting equipment.

b) It shall be able to transmit the working status and undervoltage alarm information of the power supply and backup power of the fire-fighting equipment to the fire control room graphic display device.

1.2. GB 28184-2011 "Fire Equipment Power Monitoring System"

1.3. GB 50116-2013 "Fire Automatic Alarm System Design Specification"

2 system components

Huafeng Textile has a fire equipment power monitoring system project consisting of fire equipment power monitoring background, anti-device power detector.

The communication bus of the project is connected to three communication buses, and the fire protection equipment power monitoring module of the site is directly connected to the wall-mounted background to form the aorta of the fire protection equipment power monitoring system. AFPM100/B fire equipment power monitoring system adopts two-layer structure networking mode of fire equipment power status monitor + voltage / current sensor. The whole monitoring system is comprehensive in function, safe and reliable, accurate in detection and cost-effective. The system uses RS485 network communication internally and provides Modbus-RTU communication protocol to meet the connection of other standard systems. The above-mentioned set of signals is stable and accurate. Fire equipment power monitoring system. The system networking is divided into three layers:

1) Station management

The management of the station control management system for the electrical fire 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 touch 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 graphics, digital display, sound, and indicator lights.

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 shielded twisted pair cable, realizes real-time communication between field device and host computer by RS485 interface and MODBUS communication protocol.

3) Field device layer

The field device layer is a data acquisition terminal, mainly for the AFPM100 series fire equipment power monitoring detector.



3 fire equipment power equipment China Hardware Business Network

3.1, AFPM100 fire equipment power supply 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 system

communication method:

Modbus-RTU communication protocol, RS485 half-duplex bus mode, transmission distance of 500m (if more than 1200m can be extended by repeater communication transmission distance).

Monitoring capacity ≤ 128 points

Operational rating

1 Daily duty class: real-time status monitoring, history query.

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

3 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

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

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

3 Working environment relative humidity: ≤95% no condensation

4 Altitude: ≤2500m

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

3.2, AFPM100 series instruments

3.2.1. Real-time monitoring of two three-phase voltages;

3.2.2, with overvoltage, undervoltage, phase loss, phase error, overcurrent (only with current detection products) alarm;

3.2.3, provide one or two channels (only monitor two-way three-phase AC voltage products) switch input function, can monitor the switch state; (see module selection for details)

3.2.4. Provide one relay output, which can be connected to the alarm control loop;

3.2.5. With event storage function, the alarm can record the time, type and parameter of the alarm occurrence. According to the alarm record, the situation can be analyzed to provide a basis for eliminating the fault;

3.2.6. Using fieldbus communication technology, the host computer management software can monitor the operation of the site at all times and timely discover the alarm information. The standard MODBUS protocol can be connected to various standard systems via the RS485 interface;

3.2.7, high integration, network, high degree of intelligence, reasonable operating characteristics;

4 system function

4.1, 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

4.2, 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

4.3, 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

4.4, 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

4.5, alarm record function

● Record 10000 related fault alarm information

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

● Alarm event query

● Alarm record printing

4.6, printing function

The monitoring system can print Chinese characters and print alarm events and time, fault events and time.

4.7, silence

In the event of an alarm such as an alarm or a fault, the speaker of the monitoring device will give a corresponding alarm sound to prompt, press the “mute” button to terminate the alarm, and the alarm light will be green. During the period, the staff can handle the faults. Everything returned to normal and the alarm light went out. If a new fault occurs, the silence indicator will turn off and the speaker will sound an alarm again.

5 Conclusion

Huafeng Textile Fire Equipment Power Monitoring System consists of fire equipment power monitoring device AFPM100/B and fire equipment power detector. AFPM fire equipment power monitoring system is a computer monitoring and control system independently developed by Ankerui. It can be widely used in intelligent buildings, high-rise apartments, hotels, restaurants, commercial buildings, industrial and mining enterprises, national key fire protection. Units and petrochemical, cultural and educational health, finance, telecommunications and other fields. AFPM100 fire equipment power status monitor is the core of AFPM fire equipment power monitoring system. The monitoring equipment is connected with multiple sensors through RS485 bus to form a distributed fire equipment power monitoring system to monitor the working status of fire equipment power in real time. The controller adopts centralized and modular design, and is equipped with sensors to track, collect, store and analyze the operating parameters, fault information and position information of the monitored fire equipment power supply, which is convenient for users to manage and monitor; The interactive interface displays the data of the fire equipment power supply, and has many functions such as management, viewing, alarm, and printing. The device has reasonable structure, high reliability, strong function, convenient maintenance, high cost performance, and the system interface is intuitive and easy to use.

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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