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1.Overview of Campus GPRS Card System
The campus GPRS card system is designed in accordance with the overall idea of the digital campus network. This system is the core of the entire digital campus. It not only has various consumption and charging functions, but also has virtual financial management, sending and receiving short messages, equipment management, water control, Various management functions such as electronic control, library management, access control and attendance, and bank loading.
This system adopts GPRS wireless network, through a universal card management platform and a card information publishing platform, and through a unified identity authentication, it can be perfectly integrated with the school management information system, so as to achieve a digital campus system with no data redundancy and a high degree of data sharing. , To provide better services to the school management information system.
2. Introduction to GPRS network
GPRS is a perfect service to solve mobile communication information services at present. It is based on data flow accounting, wide coverage, and faster data transmission speed. The launch of GPRS provides an infrastructure platform for industry and enterprise users to develop wireless office, and creates favorable conditions for promoting the application and development of mobile office. Compared with wired networks, GPRS networks have the advantages of low rental costs, mobile office, and no geographical restrictions. The emergence of GPRS provides a new choice for enterprises and industry users to develop wireless office.
GPRS communication method is more suitable for meteorological information collection business. At present, the meteorological center and each collection point use X.25 and PSTN for interactive transmission. The monthly rent is too high. The data transmitted by telephone line is charged by time, which brings a lot of inconvenience and expense. It’s not cheap either.
3.The main features of the system and the benefits it can bring
3.1 The function of campus GPRS one-card system
This system uses broadband IP (DDN dedicated line) + GPRS wireless network technology to ensure the interconnection and interoperability of the network, and provide bandwidth guarantee with a certain QOS. The equipment and network architecture used have good scalability and can be based on the needs of subsequent development. Without changing the existing networking scheme, the remote wireless data transmission function can be realized by adding GPRS DTU equipment.
This system is developed based on the comprehensive application of current advanced computer technology, especially GPRS network technology, IC card technology, data management and other technologies, to improve the school’s ability to manage people, finances and things in a unified way. A computer application system with functions such as identity recognition, electronic money, and electronic transactions on campus, it has the following functions:
It can replace faculty and staff ID, student ID, library ID, medical card, meal ticket, water ticket, etc.
Consumption by teachers and students at school (dining in restaurants, purchase of daily necessities, consumption on the Internet, consumption of sports facilities and other daily consumption, etc.)
Expenditure control and management of various departments and offices of the school. (Through the virtual account of each department of the school through the Yinli card, the school can accurately realize the expenditure control and management of each department and office, such as copying from department A to department B, swiping the card on the POS machine of department B to deduct the prepayment from the virtual account of department A Set the cost, so that you can conveniently control the expenditure of each department, and at the same time, you can also analyze the workload of each department, the use of existing resources, etc.
School status management and registration for school opening.
Attendance management (through the control of access personnel, the system can accurately grasp the status of the personnel in the school, and can accurately provide whether each person is in school for a certain period of time).
Book loan management.
Access control management.
Consumption in life service centers, student activity centers, student apartments, swimming pools and other premises.
3.2 Benefits of using campus GPRS all-in-one card to schools
Enhance the image of the school and simplify the daily management of the school, which can greatly reduce the workload of relevant personnel. At the same time, by setting virtual accounts for each department and office of the school, the school can accurately realize the expenditure control and management of each department and office, thereby greatly improving The management level and management efficiency of the school promote the construction of school spirit and discipline.
3.3 The financial benefits of using the campus GPRS all-in-one card system
The school funds are highly concentrated, unified and simple fund management, eliminating cumbersome cash management, simple account reconciliation, eliminating the leakage of funds and accounting, saving human resources, and reducing the workload of related department staff and financial personnel, real-time Inquiry and monitoring of consumption within the school.
3.4 Benefits of using the campus GPRS all-in-one card system to the teachers and students of the school
Safer currency, more convenient, no need to carry cash, unified simple and fast consumption payment, convenient to check consumption details at any time.
3.5 Benefits of using campus GPRS all-in-one card system for parents of students
Reducing the amount of cash for children can track and control their children’s consumption in school
4.System performance characteristics
4.1 Seamless integration with campus network.
This system uses the existing school local area network as the basis of the system, avoids re-netting, has a low system cost, and can be used for the authorization, management, and charging of multimedia teaching. It can be used for automatic identification of the school’s obstacle reporting system, etc.
The system is powerful: the system software is easy to operate, the functions are considered, and the independence of each module is strong. The system provides advanced management functions to deal with various abnormal situations, such as hardware failures, charging errors, blacklists, card failures, etc. , Have done detailed considerations and settings.
4.3 Advanced technology:
a) The advanced nature of the system’s IC card: The system uses the world’s most advanced Mifare1 non-contact radio frequency smart card (S50) as the information carrier of the campus card. The card has a capacity of 8Kbits and is divided into 16 independent sectors. It can be used in at least 16 different applications. Each application has independent multiple password protection and does not interfere with each other. It has an anti-collision mechanism and supports multi-card operation at the same time.
b) Advanced hardware structure: The hardware of our campus all-in-one card system adopts a three-layer structure, and the POS consumer machine can run away from the PC; PC local built workstation platforms such as (consumer workstations, recharge workstations, access control workstations, attendance workstations, storage workstations, etc. , Requires local workstations to establish a local database, with various data backup functions), workstations can run away from the central server, any network failure, the system (including each workstation) can operate normally. Once the network is connected, the workstation software can download the latest information to the center in time.
c) Advancement of the software architecture: In order to facilitate the expansion of all-in-one card functions, the software architecture must be divided into a system management layer and a workstation subsystem layer.The system management center uniformly manages each application subsystem, and each subsystem can be flexibly customized by users, and users can develop their own subsystems to join the all-in-one card system
4.4 Data security and reliability
In terms of security, we adopt the overall security design of the system including: IC card management security, key management security, transaction access security and GPRS network security four parts, to ensure the safety and reliability of the entire system business process, to ensure the data transaction Integrity, confidentiality and resistance to denial. In terms of data reliability, the system network adopts an online mutual backup design, and the server adopts a dual-machine hot backup design to ensure the stable and reliable operation of the system. All data will be stored in each management terminal. In the event of a network failure or a server failure, each terminal, The PC works as usual, and all data will be stored in each read and write terminal. Once the network is restored, all data will be automatically sent back to the system center database.
The system must specify the following mechanisms and technologies to ensure the safety and reliability of the system:
Equipment-level reliability: In the design, by selecting network equipment with high-reliability design, reduce equipment failure rate and improve network reliability. The reliability of the equipment itself is the main factor that determines the reliability of the entire network system. Especially the GPRS equipment at the collection point is an important guarantee for the normal operation of the entire system business. This time, the GPRS DTU equipment of Aixinte Company was selected to have high reliability and passed the national standard EMC anti-interference test, which fully guarantees the network reliability at the equipment level.
The backup design of the interconnection line: each node is connected with other nodes through multiple lines to avoid single-channel failure and improve network path redundancy. In addition to the APN dedicated line as the main network, the local and municipal bureau also chose ADSL/ISDN as the backup link in order to improve the reliability of the link.
Security of IC card: The system must use the most advanced non-contact smart IC card in the world, and the communication between the card and the reader must use the internationally accepted DES (American Military Encryption Algorithm) encryption and triple-key mutual authentication communication Way.
Authorization control: system operators have strict authority settings, password authentication, and have operation records for record; the activation of cards and read-write equipment must be authorized by the system. Some special sensitive operations, such as key generation and management, IC card initialization, price setting, etc., must be authorized by two or more people.
System database control: the system database is encrypted, even if the database file is obtained illegally, it cannot be opened; the system database implements strict partition management, and users with different departments and different permissions can only perform the operations assigned to the system. Important data such as passwords and other key records are encrypted with complex algorithms before being stored in the database.
Data encryption: The data collected from the consumer terminal is packaged into a local data packet for transmission according to a certain DES algorithm.
Advanced hardware technology: The world’s most advanced software and hardware technology is used to ensure network security. The system network adopts on-line/off-line mutual backup design to ensure the stable and reliable operation of the system. In the event of a failure of related network components, the system will automatically enter the offline state to operate, and all data will be stored in each terminal. Once the network returns to normal, all data will be automatically sent back to the system management center. The system read-write device has a built-in environment-friendly long-life battery, which can ensure that the machine works normally for more than several hours after a power failure.
Strict management system: set operating authority for each link of the entire system, such as recharge, IC card, equipment, key, management center and other functional groups to establish a strict management system to ensure the stable and safe operation of the entire system.
4.5 Design strictly in accordance with design specifications
The IC card and various management modules used in this system are designed in strict accordance with the national “China Financial Integrated Circuit (IC) Card Specifications”, “China Financial Integrated Circuit (IC Card) Application Specifications” and other relevant specifications.
4.6 Strong system scalability:
Considering the needs of future development, our system takes into account product selection, capacity and processing capacity, and fully considers the reliability of expansion and upgrades. This consideration not only fully protects the original investment, but also has a high comprehensive Value for money. In terms of implementation, the software and hardware of each subsystem adopts a modular structure design, and it is quite easy to increase or decrease system functions, and only need to increase or decrease the corresponding functional modules and hardware devices. The software upgrade and hardware expansion of the system are quite convenient, and it can be flexibly configured according to the needs of users. Our company has successfully developed the following systems that are closely connected with the all-in-one card system:
Virtual financial management function;
The short message communication subsystem can be connected with the short message services of China Mobile and China Unicom to realize interactive information communication among parents, students, and schools. If necessary, schools can install and use them at any time. In addition, in order to ensure a particularly great expansion and protect existing investments, our company provides secondary development interfaces, card read-write interfaces, and provides school system administrators with keys for all sectors of the card.
4.7 Convenient management and easy maintenance: The system involves a wide range of areas, and we implement real-time control and management in many modules. The system administrator can make convenient adjustments to the system without changing the operation of the system. The campus GPRS all-in-one card equipment is advanced and stable, the software is mature, the daily failure rate is extremely low, and the failure is easy to remove when the failure occurs, and the daily management and operation are simple and convenient.
4.8 Rich and detailed report design: The system provides complete and accurate statistics and management reports, including all consumption data, recharge data, card issuance data, card issuance data, settlement and reconciliation, book borrowing data, access data, medical data, Student information, etc., and can flexibly perform single or combined queries according to information such as time period, operation location, operator, operation type, and unit. Can provide custom report function, can expand the report form in the system through software or special development tool.
4.9 Cross-platform operation: This system fully takes into account the diversity of campus systems, is compatible with a variety of mainstream operating systems (compatible with various Windows, SCOUnix, Linux, Solaris operating systems) and a variety of large-scale database management systems (Oracle, SQL Server, Sybase) ).
5.Campus GPRS all-in-one card system structure
Topology diagram of one-card system
The campus GPRS card system can be divided into three levels according to its functions:
1. System Integrated Management Center
2. Subsystem management layer
3. The front-end POS machine application control layer.
The whole system is based on GPRS network and supports multiple network protocols. In order to ensure the stability and reliability of the system, the system server adopts a dual-system hot backup method. In addition to the system platform software and database installed in the server for network terminal sharing, the server can also provide network functions such as file sharing, print sharing, and system security protection. The integrated management center is the core of the entire system application management and security. It is responsible for the generation and management of system keys and the maintenance and management of the entire system center database, such as system initialization, etc. The system management center is also responsible for the information management and distribution of all system operators Subsystem operator authority, responsible for the addition and deletion of all equipment and other functions. At the same time, the system management center is also responsible for the overall system security management, system operation monitoring and other tasks.
For more information, please contact: Guangzhou Aixinte Industrial Co., Ltd.
Address: 4th Floor, No. 5 Guanyu Road, Tangdong, Tianhe District, Guangzhou
Tel: (020)85526031 Fax: (020)85526032
Website: www.ixint.com.cn
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