(Note) A Total of 2314 Student Dormitory Fires Have Occurred Nationwide! Look at How to Avoid Risks!


According to statistics, there have been a total of 2314 student dormitory fires in China in the past five years! On average, student dormitories catch fire every day. With the increasing popularity of the construction of smart and safe campuses, as an important part of smart campus construction, prepaid electricity and electricity safety management measures for student dormitories are essential.

(Note) A Total Of 2314 Student Dormitory Fires Have Occurred Nationwide! Look At How To Avoid Risks!

Is it difficult to manage electricity usage in college dormitories?

Quick arrangement of intelligent prepayment management system!

Have you ever experienced this situation?

Did the student encounter a sudden power outage due to forgetting to pay the fee?

Does the dormitory manager have to monitor students every day to see if they are using illegal electrical appliances?

Faced with a series of non-standard issues such as fire hazards, payment difficulties, and so on,

How to solve each of the above problems?

And how to solve various problems related to electricity management in school dormitories.

Then follow me and read down together.

In order to strengthen the management of safe electricity use in schools, improve awareness of energy conservation, eliminate hidden dangers in electricity use, and avoid fires, more and more schools have begun to introduce intelligent prepaid management systems. Intelligent electricity management systems have been newly installed in student dormitories, which not only meet the needs of normal use, but also integrate functions such as electricity metering, fee management, and electricity process management. They have functions such as remote real-time meter reading and measurement, control of student schedules, identification and warning of malignant loads, cloud platform network access, and WeChat query reminders. They have created economical and safe campuses, facilitating the integration and informatization of school management, truly achieving the design intention of efficient, convenient, and safe unity.

Technical solution for the Elecnova prepaid system

——Solve your problems for you

(Note) A Total Of 2314 Student Dormitory Fires Have Occurred Nationwide! Look At How To Avoid Risks!

A domestic vocational and technical college plans to expand its campus according to development needs, with the construction of three student apartments, totaling approximately 680 rooms. In order to strengthen the management of electricity metering and billing for student dormitories, it is necessary to establish an intelligent and intelligent prepaid management system.

Our plan design is like this!

In order to control the opening and closing of lighting, sockets, and air conditioning in each dormitory, a one in three out wiring method is adopted in this project. Each room is equipped with one electricity meter, and the backend system can achieve separate control and management of the three circuits through the built-in opening and closing components (magnetic retention relays) of the electricity meter, and achieve account integration.


Our company has developed a DDSY1946A-13 smart electricity meter for dormitory electricity usage, which can be connected to air conditioning, lighting, and sockets respectively. It can also achieve prepayment control, load control, and time control for the three outgoing lines, achieving electricity management for campus apartment dormitories. This electricity meter is connected to the communication management machine through wired communication. The communication management machine is then connected to the monitoring room switch through optical fiber (with a local area network, data can be transmitted through a reserved Ethernet interface). The host and server achieve data exchange through interconnection with the switch.

(Note) A Total Of 2314 Student Dormitory Fires Have Occurred Nationwide! Look At How To Avoid Risks!

——The above diagram is a system diagram——

DDSY1946A-13 Energy Meter

Supports one incoming line and three outgoing lines (connected to air conditioning, lighting, and sockets for dormitory electricity usage), and implements prepayment control, load control, and time control for the three outgoing lines. The electricity meter supports a prepaid working method of paying before using electricity, providing good assistance for user fee management.

(Note) A Total Of 2314 Student Dormitory Fires Have Occurred Nationwide! Look At How To Avoid Risks!

——The above figure shows the selection of prepaid electricity meters——

The electricity meter has rich load management functions, and different modes can be set according to different output circuits. For example, the air conditioning circuit has an air conditioning mode, and the socket circuit can be set to a light off mode. At the same time, it also has the function of identifying malicious loads. When students use high-power illegal electrical appliances (such as fast heating, induction cookers, etc.) in the dormitory, the energy meter will automatically switch off and cut off the power supply, which can effectively prevent dangerous accidents from occurring. At the same time, setting up a whitelist can enable some designated appliances (such as water dispensers) to be used normally.

The electricity meter provides two sets of control time slots for the lighting, socket, and air conditioning circuits, making it convenient for the school management department to control the power on/off of different circuits at different times according to the actual situation, meeting the requirements of timed control management.

How to choose a communication management machine?

The front-end communication management machine adopts the S3100C8E1BD communication management machine, which supports one line port (TCP/IP network port) and eight line ports (RS485 port, each line port can connect up to 32 electricity meters in series).

(Note) A Total Of 2314 Student Dormitory Fires Have Occurred Nationwide! Look At How To Avoid Risks!

The S3100C8E1BD communication management machine is powered by a DC24V DC power supply; In the entire communication link, it plays a role in the conversion function of the upper and lower layers of the network and is the core component of the entire communication network.

The communication management machine mainly has the following characteristics

01 comes with a built-in Linux operating system, which does not rely on the backend machine for data processing and storage;

02 supports Modbus RTU and DL/T645 serial port protocols;

03 supports DDR264MB Memory to store data and prevent data loss;

Functional architecture of prepaid system

Due to the inseparable relationship between fee management and account management in business processes, the operations related to fee management and account management are merged together, collectively referred to as prepaid management.

The functional architecture of the prepaid system is as follows:

(Note) A Total Of 2314 Student Dormitory Fires Have Occurred Nationwide! Look At How To Avoid Risks!

System advantages

01 Prepaid meter supports malignant load identification function, with over capacity power outage.

The 02 prepayment system supports prepayment function, with overdue trip and remote control, achieving unmanned operation.

The 03 system supports residual battery warning and alarm functions, as well as WeChat reminder methods.

The 04 system supports various payment methods such as cash and WeChat.

The 05 system adopts a cloud platform architecture, supporting multiple users to access data simultaneously. Mobile phones, PADs, and PCs can access data and perform management and maintenance operations as long as they are connected to the internet.

The 06 system adopts a cloud platform architecture, and our company can perform remote maintenance and management, with fast response rate and saving after-sales costs. At the same time, the cloud platform architecture can be infinitely expanded, supporting the addition of point access in the later stage.

Write at the end

University dormitories, as a special application, have different requirements from other application scenarios based on traditional electricity management needs. In addition to commercializing basic electricity management, they emphasize more on electricity safety and on-demand control: independent metering and control of lighting, plug-in, and air conditioning circuits do not interfere with each other; Prohibit the use of illegal electrical appliances such as water heaters and hair dryers; Lighting and socket circuits are differentiated according to working days, holidays, and scheduled power outages.


The prepaid system for college dormitories set up by Elecnova is customized and developed for the special application of college dormitories, providing 24-hour protection for school safety by meeting the special needs of electricity metering, control, energy monitoring, time management, load management, and prepaid management in college dormitories.