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The recent frequent occurrence of campus safety accidents has aroused widespread concern from all walks of life. Allowing students to study at ease and parents to work at ease are important factors related to family happiness and social stability. Building a “safe campus” has also become a hot topic in the whole society.
At present, the following three situations in real life make everyone feel helpless:
Most children are single children, and students’ personal safety and extracurricular activities are particularly important to a family. However, most parents are busy with their own business and rarely communicate with their children. It is difficult to fully grasp the situation of their children at school.
Due to the limited faculty and the backward technical means, the school’s management of students is still in the manual management stage and the initial stage of computer-assisted management. The information feedback is not timely, and the information communication with parents is seriously insufficient. It only depends on a limited number of times. Parents’ meetings and school’s usual irregular feedback make it difficult to convey enough students’ school conditions to parents.
Children’s curiosity and social temptation make it difficult for children to resist the bad influences from the outside world. Phenomenon such as skipping classes and playing games, coupled with busy traffic conditions, make accidents happen inadvertently.
In order to actively respond to the slogan of “harmonious education, safe campus”, Shenzhen Jiaweisi Technology combined its own technological advantages, based on RFID (non-contact automatic identification) technology, and developed and designed a safe campus system through short messages and the Internet. This system allows parents to keep abreast of their children’s school, homework, school performance and other information in a timely manner, build a bridge for communication between schools, teachers, parents, and children, help children grow up healthily, and make love everywhere.
1. Introduction to RFID:
1. What is RFID?
RFID is the abbreviation of Radio Frequency Identification, that is, radio frequency identification technology, commonly known as non-contact automatic identification.
2. What is RFID technology?
RFID radio frequency identification is a non-contact automatic identification technology. It automatically recognizes the target object loaded with electronic tags and obtains the data in the tag through radio frequency signals of various bandwidths. The identification work does not require manual intervention and can work in various harsh conditions. Environment; Obstacles can be bypassed and data can be read through external materials; RFID technology can still be identified under high-speed motion; it can also be accurately read when multiple tags appear in the identification range at the same time, and the operation is quick and convenient.
Short-distance RFID products are not afraid of harsh environments such as oil stains and dust pollution, and can replace barcodes in such environments, for example, to track objects on the assembly line of a factory. Long-distance RFID products are mostly used in transportation, and the identification distance can reach tens of meters or even hundreds of meters, such as urban intelligent transportation or automatic highway toll collection.
The scope of application of RFID products far exceeds the industries covered by traditional barcodes, perceiving the earth, and smart cities.
3. What are the basic components of the RFID system?
Note: The electronic tag is attached to the identified object and records data related to the object
4. Comparison of RFID bandwidth and recognition distance
5. Will there be any radiation hazards with radio frequency of 13.56MHz, 915MHz, 2.45GHz?
Radio frequency technology uses the low-end spectrum of electromagnetic waves, and the radio waves emitted by the reader are as safe and harmless as the stereo in a car. Every country has a mechanism to control energy levels. The 13.56MHz frequency between AM and FM has been used for many years, and there is no problem even at very high energy. The energy limit in the United States and most other countries is 4 watts. The frequency emitted around the simulated mobile phone is 915MHz, and no health hazards are found in the range of energy below 1 watt. The frequency generated by the latest electronic mobile phones is 2.45 GHz.The range of energy below 1 watt does not prove to be harmful to health
2. System composition
The safe campus management system is an intelligent management system for unified management of students entering and exiting the school, unified attendance and automatic SMS notification. The system is an information exchange system that integrates advanced RFID technology, computer technology and wireless communication technology.
The working principle is: each student carries a long-distance label card, and each card number is unique, and it is also the identity of each student. A card reader is installed at the school gate. When students enter and exit the school gate, the card does not need to be taken out. The card reader automatically reads the card and transmits the card number to the front-end machine. The front-end machine makes a judgment on the entry status of the card number, and uploads the data to the safe campus service system software after completion. The system can realize the identification of the legal identity of the students, and record the entrance or exit of the students.
Main function: Parents can use this system to not only get information about the time when their children arrive and leave school in time via SMS. Schools can use this system to manage students more effectively and communicate closely with parents. Including the child’s test scores, homework reviews, recent performance, various notices from the school, and activity information can also be sent to the parents in time, so that the parents can understand the child’s school situation as soon as possible. So as to effectively cooperate with the school to provide guidance and education to children, improve the level of teaching management as a whole, and lay the foundation for the follow-up campus information management.
Hardware composition
System software composition
This system is composed of 3 softwares, namely
1. Data acquisition front end;
2. School management software-BS structure (web browsing form)
3. School management software—CS structure (application form)
Choose one of 2, 3 to achieve the same function.
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