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The remote recognition attendance system for home-school communication is divided into 2.4G activeRFIDTechnical home-school communication and 2.4G and 125K dual-frequency semi-active RFID technical home-school communication. The following compares the two application technical solutions.
1. System significance
1.1 For students
Fully closed management is implemented during school hours. Strangers and all irrelevant persons are strictly prohibited from entering the campus with the help of the campus security system to ensure the safety of children at school.Students can establish online communication with parents and teachers through the home-school platform
1.2 For parents
Get timely information about the arrival (school) and leave (school) time of your children, and understand the safety of your children on their way to school; get timely notifications from the school (parent meetings, education assistance information requested by parents, holiday notices, etc.); understand students in a timely manner The current day or stage of the school learning situation (requires the school to provide corresponding services).
1.3 For schools
High level of safety precautions, centralized attendance management, easy to understand the situation of students from school to class, timely detection of students’ absences, avoid liability disputes caused by the school and parents, and also provide schools for the school to solve student accidents outside school Legal basis; improve the management level, and effectively distinguish the situation of students entering and leaving the school; information services that can provide parents with auxiliary education education can be better coordinated by parents, which is conducive to improving the quality of education; schools can use this system As the school’s attendance system for teachers and students, it automatically generates attendance reports every month.
1.4 For education authorities
Real-time supervision of student access conditions in schools within its jurisdiction, to facilitate timely detection of problems, and to evaluate the school’s student attendance management level; a real-time communication system connected to all parents has been obtained. In case of emergencies such as SARS or typhoon, the emergency situation can be notified to parents in the city as soon as possible, which is fast, accurate and has a high notification rate to ensure the safety of students.
2. 2.4G active RFID technology home-school communication
2.1 System architecture and program description
Installation topology
Each student carries an RFID active electronic tag (which can be used as an electronic student ID). After arriving at the school gate, two 2.4G active directional readers near the school gate will read the tag data and transmit the information to it Data center server, after the server performs processing and judgment, the home-school communication platform combined with the telecom operator sends a text message to the student’s parents’ mobile phone, such as “Dad, I have arrived at school safely” Dad, I will go home soon after school At the same time, all students’ entry and exit information will be saved on the server and organized into reports for schools and parents to inquire. Using the home-school interactive network platform, the head teacher can check each student’s school learning and living conditions regularly or not. It can be sent to parents’ mobile phones in a centralized or individual manner at regular intervals, eliminating various communication barriers caused by teachers’ one-by-one notifications or parents’ absence from parent meetings, which is convenient and quick.
In order to judge the entry and exit, install two readers. The distance between the two should be more than 10 meters. At the same time, the reader should adjust a certain angle so that the signal coverage area between the two does not overlap.
Students must bring their cards when entering and exiting the school. When entering, they are first recognized by Outside Reader and transmitted to the data center through the network. Then, within a short period of time, they are recognized by Inside Reader and the data is transmitted to the data center. The receiving program on the data receiving server of the data center will automatically process the judgment after receiving the data, and determine that the student to which the card number belongs has entered the school.The situation of leaving school is exactly the opposite of entering school in the data direction, first recognized by Inside Reader, and then recognized by Outside Reader
2.2 Introduction to the main functions of home-school communication and digital campus management platform
1) Attendance function
Manage the attendance information of personnel entering and exiting the campus through an attendance system that is independently developed and implemented using wireless network communication technology. Using the public Internet network system, the home-school-link web platform can view and analyze all attendance data.
2) SMS function
According to needs, the parents will be notified in the form of short messages about students’ attendance, campus access, grade information, student performance, and teaching notifications. At the same time, it can receive reply messages from parents or employees, and establish a message communication platform between the school and the family.
3) Internet function
Schools, students, and parents can log in to the Home-School Link website at any time without geographical restrictions to learn about the various information released by the school, students’ grades, and school performance, and make full use of the advantages of the Internet to form real-time online communication with all parties.
Home-school-pass web platform login interface
Home-school-pass web platform main page
2.3 Introduction of related hardware products
2.3.1 MS-R902 type directional reader
Recognition distance: 0 ~ 150 meters
Recognition ability: Recognize more than 500 labels at the same time
Polarization mode: circular polarization (more suitable for applications where the label orientation is changeable)
Working frequency band: 2.4 GHz ~ 2.4835 GHz
Power consumption standard: working power is milliwatt
Anti-interference: channel isolation technology, multiple devices do not interfere with each other
Power standard: DC 7.5～12V 500～1000mA
Reliability: Thunderproof, waterproof and shockproof, meeting the requirements of industrial environment
Size: 268×268×80mm
2.2.1 MS-T725 electronic school badge label
Recognition distance: 0 ~ 100 meters adjustable
Recognition speed: 200 km/h
Recognition ability: 200 frames per second anti-collision performance
Recognition method: omnidirectional recognition
Working frequency band: 2.45GH, 13.56MHz
Service life: 1～3 years, replaceable battery
Power consumption standard: working power is microwatt
Anti-interference: channel isolation technology, multiple devices do not interfere with each other
Size: 40×36×12 mm
Weight: 12g
2.3.3 MS-T906 standard card type electronic label
Recognition distance: 0～150 meters adjustable
Recognition speed: 200km/h
Recognition ability: 200 frames per second anti-collision performance
Working frequency band: 2.45GHz, 13.56MHz
Recognition method: omnidirectional recognition
Service life: 1～3 years, replaceable battery
Power consumption standard: working power is microwatt
Anti-interference: channel isolation technology, multiple devices do not interfere with each other
Size: 86×54×6 mm
Weight: 24g
3.2.4G and 125K dual-band semi-active RFID technology home-school communication
3.1 System architecture and program description
This system is an upgraded version of 2.4G active RFID technology home-school management system. Adopt 2.4G long-distance recognition technology and 125K low-frequency wake-up technology, install readers and low-frequency activators at the school gate, students will be activated to read when they carry tags in and out, and the tags are usually in a dormant state to save power and increase the life of the tags. . The reader uploads the tag ID and activation antenna ID data to the system server through RJ45. The home-school communication platform can determine specific information (such as: personnel name, location, time of appearance, etc.) after processing, and at the same time send students into and out of school School information is sent to the parents of students through short messages, so as to provide effective management methods for parents to keep abreast of student trends and school conditions. The system server can also sort out various attendance reports (such as late/early leaving records, non-attendance time, etc.) during this period of time according to the information of personnel entering and exiting the school gate during the period of school and end of school.
The activator is installed in the guard room and leads out two sets of 125K coils, namely activation coil A1 and activation coil A2. When students with dual-frequency electronic tags enter the school gate, they are activated at low frequency when they are within the range of 1 to 3.5 meters from the activation coil A1. The device sends out an electromagnetic wave signal to activate the dual-frequency electronic tag. After the tag is awakened, it sends the ID information of the electronic tag itself and the activation coil A1 to the reader at a certain rate, and the reader receives the radio frequency signal sent by the dual-frequency electronic tag and activates it. The coil ID is transmitted to the background through the 485 or TCP/IP interface; when the student enters the inside of the gate, the electromagnetic wave energy carried by the activator gradually weakens until the dual-frequency electronic tag can no longer be activated, and the activation coil A2 activates the dual-frequency electronic tag, the same The dual-frequency electronic tag sends its own ID information and activation coil A2 to the reader at a certain rate. The reader receives the radio frequency signal sent by the dual-frequency electronic tag and the activation coil ID and transmits it to the background through the 485 or TCP/IP interface , The background makes judgments based on the low-frequency activator wake-up tag, the read data sequence of the reader and the ID number of different activator antennas;
Home-School Communication·Digital Campus Management Platform Software section introduces the same platform as the 2.4G active RFID technology Home-School Communication platform.
3.2 Related hardware introduction
3.2.1 MS-R801 industrial grade omnidirectional reader
3.2.2 MS-R750 low frequency activator
3.2.3 MS-T725 electronic school badge label
3.2.4 MS-T700 dual-frequency electronic label
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