RFID campus teacher and student safe entry and exit management solution
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1. System background:
With the development of society, people’s work is getting busier and busier, while caring for their children is becoming more and more inadequate. In the case that children cannot be transported to and from school, the safety of children going to and from school affects the hearts of every student’s parents. If students can report that they are safe when they arrive at school and leave school, parents will also be notified, so that parents can understand their children’s arrival and departure. The exact time of school will undoubtedly prevent parents from worrying about the whole day, and it is also an urgent need for every parent to understand the learning and living conditions of their children at school. As a modern school, student management and the school’s own informatization development level have become an important factor in measuring the overall development level of a school, and it is also a reflection of the school’s image.
Develop a 2.4G “safe campus” system for campus access management based on RFID radio frequency technology. The barrier-free attendance program adopts the data interaction method of remote induction card reading. Students carry a specially customized electronic tag (electronic student ID). When entering and leaving the school, the student ID will activate the low-frequency exciters deployed inside and outside the school respectively, and send data, which is read by the reader and sent to the server. According to the judgment, the system activates the SMS platform to send safe SMS. In addition, using the system’s text messages and network platform, the head teacher can send each student’s school learning and living conditions to the parent’s mobile phone and e-mail in a centralized or irregular manner, eliminating the need for the teacher to notify the parent one by one or the parent’s absence. The various communication barriers created by waiting for the situation are convenient and quick.
2. System advantages:
1) Perfect 100% reading function
Due to the large number of students entering and exiting the school gate during the peak period and there is a certain degree of obstruction, the electronic tags are emitted in a concentrated manner, and there is a certain reading conflict between the readers. But after the trigger mechanism is added, when the tag is not in the trigger area, the tag does not transmit 2.4G, which greatly reduces the number of concurrent tags, strengthens the anti-collision, and improves the ability of the reader to distribute information on the tag data.
2) Perfect 100% access recognition and judgment function
Pure 2.45G technology can realize accurate label entry and exit judgment. Channel management has certain difficulties. Combined with excitation technology, through two independent excitation areas inside and outside the school gate, the label entry and exit direction can be clearly judged. When the ground exciter triggers the tag, it will send its ID to the tag, and then pass the information to the reader via 2.4G.
3) Excellent recognition performance
100% perfect recognition judgment;
Sensitive recognition capability (can read tags at a speed of 200 kilometers per hour, and the recognition distance can reach 80 meters)
Super anti-collision (each detection point can identify up to 100 people at the same time);
Highly stable recognition ability (bit error rate is less than one in ten million);
Fast recognition speed (the fastest recognition speed can reach 100 frames per second)
Fast data transmission (air transmission rate can reach 1M)
4) On-site advantages
Environmental adaptability: high anti-interference, no special requirements for external interference sources and perimeter environment;
Installation convenience: sensor integrated structure design, no need for external antenna or ground sense;
Operational reliability: The internal circuit is highly integrated, and the device failure rate is minimized.
Convenient debugging: After the triggers are distributed, there is no need to adjust the direction and attenuation of the reader.
5) Electrical characteristics
Ultra-low power consumption, the wireless tag can work continuously for more than 3 years without changing the battery;
Convenience and safety, the label does not need to be charged, and there is no need to replace the battery;
No radiation, no impact on human body and environment, safer and healthier.
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