Service Overview The SMS is a widely used information exchange platform in China's primary and secondary schools. The short-distance credit card attendance method used in the traditional school messaging program also highlights its shortcomings in the actual use process: the school is in and out of school. The rapid increase in the flow of people at the school gates has led to the phenomenon of long queues for students attending school, which has seriously affected the efficiency of credit card swiping.
With the development of technology applications, we can now completely solve this problem. 2.4G School Information Accessibility Attendance Program By using the data interaction mode of long-distance proximity card readers, students only need to walk through the school gate to complete their attendance, eliminating the need to line up to enter and leave the school as they used to. The program also supports the use of swiping cards to call family phone at the school messaging terminal, which greatly saves the investment cost for the user.
The technical solution "Campus 2.4G Accessibility Attendance Solution" (hereinafter referred to as this plan) is a major performance enhancement made by Shenzhen Duoao Technology Co., Ltd. based on the existing school messaging system.
This program is mainly for school attendance information management. When a student (or teacher) wears a 2.4G active composite card to enter or leave the school through the school gate, the remote reader will read the student card data and transmit it to the school's school information terminal through the RS485 cable. Through the mobile terminal GSM/GPRS channel to send attendance records to school messaging platform, the platform sends a safe SMS to parents mobile phone. The program retains the original family phone function of the school messaging system, 2.4G active composite card integrated ID or IC card function, students can hold a card directly on the terminal to make a call.
â—† Features of the program 1. Long-distance recognition uses 2.4G RFID long-distance sensing technology. When a person passes through, there is no need to actively swipe the card. As long as the card is hung on the chest or in a schoolbag, it can be identified by directly passing through it.
2. The humanized fast-passenger personnel do not need to wait and can pass through directly. They can identify >500 cards at the same time, and can support distances up to 80 meters.
3. High recognition rate Within 80 km/hour, the recognition rate can reach 100%, while the bit error rate is one tenth of a million, which can meet the high recognition rate requirements.
4. The data reports the attendance records in real-time. The platform is reported to the real-time report through the school information terminal to facilitate the query management.
◆ Network topology ◆ Accessibility Attendance System Components 1. 2.4 GHz Remote Reader 22.4G Remote Sense Reader has a “Directional Recognition†channel, which has a long read distance, fast recognition speed, and multiple electronic The card also performs the recognition function.
1.1, features:
PVC plastic, strong wear-resistant; stable and reliable performance, accurate credit card records;
The communication Module increases resistance to strong electric shock and lightning protection, and the communication process is safe and reliable.
Fast data acquisition ensures data reliability and integrity;
1.2, performance:
Operating frequency: 2.4GHz-2.5GHz ISM microwave section working mode: read-only tag type;
Recognition method: Directional recognition, ellipse sensing area;
Recognition distance: 3-80 meters;
Anti-collision: Can identify >100 cards at the same time;
Data interface: standard configuration Wiegand26, RS485, RS232;
Power adapter: DC+9V;
Working temperature: -40°C~+85°C;
2. 2.4 GHz active electronic tag 22.4G active composite card is based on the active card to increase ID / IC card function, adding positioning, waterproof and other functions. The default setting of the card is to fire once every 1 second.
2.1, features:
ID card function, support 125K proximity card reader;
IC card function, support 13.56Mhz proximity card reader;
Suitable for frequency hopping work mode, with super anti-interference ability;
Users can customize reading and writing standard data;
Effective reading distance up to 80 meters or more;
The ultra-wide working frequency band design not only meets relevant industry regulations, but also enables flexible development and application.
Can read and write multiple tags at the same time, regardless of the number of tags in the work area;
Storage area for users to read, write, erase and rewrite operations;
2.2, performance:
Tag category: card;
Operating frequency: 2.45GHz;
Induction mode: automatic sensing optional;
Recognition distance: 3-80 meters;
Material: PET, high temperature, waterproof
Overall size: 85*55*5.5mm;
Weight: 20g;
Battery: Built-in lithium button, can be used continuously for 2 years;
3. School News Terminal 2 School News Terminal communicates with the 2.4G long-distance proximity card reader through the 485 mode, collects attendance data and reports it to the school information communication platform.
3.1, function:
Instant Attendance Notification: The student will be swiped to the school and the terminal will send it to the platform in real time to notify parents.
SMS notifications: You can check the notices published by the school at the terminal (platform support);
Family phone: Through the family number selection, quickly realize the common number dialing function;
SMS sending: built-in student's commonly used short message can be downloaded through the system platform to update;
View messages: Students can see parents when they swipe their cards at the terminal, and teachers leave messages for themselves;
Toll-free calls: emergency toll-free calls can be set up, service hotline functions;
3.2, performance:
32-bit ARM CPU
Support ID card and IC card;
Built-in rechargeable battery, standby time more than 48 hours;
The use of nickel-metal hydride battery performance is stable and safe, and more environmentally friendly;
Large screen display, high brightness, high backlight, easy to use;
Support external attendance machine, maximum support 8;
Outdoor model design, waterproof, anti-corrosion, sun protection;
Large storage space, can store 5000 ID information;
Can save 10,000 family love numbers offline, support offline call;
Design SMS mode network management platform to support remote software upgrades to adapt to changes in the platform;
â—† Principles of student entry and exit attendance recognition 2 In order to realize the attendance recognition of students entering and leaving the school, the system is equipped with two 2.4G long-distance proximity readers. As shown in Figure 2, suppose the two readers are identified as point A and point B respectively. Point A is generally installed at the gate of the school. Point B is installed in the main aisle of the school. When students go through point A After the B-point machine, it is judged that the student enters the school. When the student first passes through the B-point machine and passes through the A-point machine, the system judges that the student is leaving school. The schematic diagram is as follows:
The identification method of entering and leaving the school: the school news through the terminal every 2 seconds to the AB point inquiries whether there is card data reported, if the AB point to read the card number is not the same, then the data will be saved. If the card number read by the AB point is the same, the judgment time determines whether the attendance record is the entry/exit school (A time is less than B time is entering the school, B time is less than A time is taken out), and the record is converted into attendance information. School News platform.
Product advantages â—† 2.4G reader product advantages Multi-protocol compatible;
Wide channel with "omnidirectional recognition";
Reading distance is far;
Fast recognition speed;
Multi-electronic card reading at the same time, can read and write multiple tags at the same time (up to 500/s);
Industrial design;
The advantages of 2.4G active electronic labels are composite card design;
Using frequency hopping mode, with superior anti-interference ability;
Effective reading distance up to 80 meters or more;
With waterproof function;
The storage area allows users to perform encrypted read, write, erase and rewrite operations. It also opens up the advantages of a dedicated user-dedicated dedicated private area scheme:
â—† Excellent networking mode 2 Multi-Academium 2.4G accessibility attendance scheme Using the school messaging terminal and 2.4G card reader combined to achieve a long-distance reading of electronic tags, real-time communication with the platform, call the family phone, send a safe SMS and other functions. The 2.4G reader + campus host method promoted by other operators is more convenient to implement and has more functions. After the installation of the equipment, the service can be opened.
â—† Low implementation cost 2 With many years of experience in the development and implementation of the school's information and communications platform, Duoao Technology has unique advantages in product design and cost management. The implementation cost of the plan is about 1/3 less than that of other equipment manufacturers. It does not require the use of a dedicated campus host. It can also make full use of the existing school communications equipment to upgrade, not only making full use of existing equipment, but also reducing the overall Implementation costs.
â—† More convenient implementation and maintenance 2 Accessibility Attendance equipment does not require special settings and is not affected by network viruses, operating system failures, etc. The equipment is safe and reliable. It can be replaced when a fault occurs. It can be quickly implemented and maintained to improve customer satisfaction. This solution communicates with the platform through the school's GPRS terminal. The wireless communication method has greater flexibility than the wired method, and at the same time, the network maintenance work is reduced to a minimum.
â—†More scalable card 2 Shenzhen Doo Technology's barrier-free attendance method adopts 2.4G electronic tag and IC, ID card's composite card scheme, integrates IC and ID card functions in the same card, which not only protects existing investment At the same time, most of the existing one-card devices use the 13.56M scheme, so the composite card is easier to expand and can be docked with the school's one-card system.
â—† More comprehensive application functions 2 Thanks to the use of a composite card, the card can be used not only for attendance, but also for calling and sending phone calls and sending terminal messages. The original school messaging terminal function can be used normally.
Note: Doo company provides active 2.4G+IC/ID RFID tags and readers and provides software SDK, back-end school messaging, software can use the original system or a new development system!
With the development of technology applications, we can now completely solve this problem. 2.4G School Information Accessibility Attendance Program By using the data interaction mode of long-distance proximity card readers, students only need to walk through the school gate to complete their attendance, eliminating the need to line up to enter and leave the school as they used to. The program also supports the use of swiping cards to call family phone at the school messaging terminal, which greatly saves the investment cost for the user.
The technical solution "Campus 2.4G Accessibility Attendance Solution" (hereinafter referred to as this plan) is a major performance enhancement made by Shenzhen Duoao Technology Co., Ltd. based on the existing school messaging system.
This program is mainly for school attendance information management. When a student (or teacher) wears a 2.4G active composite card to enter or leave the school through the school gate, the remote reader will read the student card data and transmit it to the school's school information terminal through the RS485 cable. Through the mobile terminal GSM/GPRS channel to send attendance records to school messaging platform, the platform sends a safe SMS to parents mobile phone. The program retains the original family phone function of the school messaging system, 2.4G active composite card integrated ID or IC card function, students can hold a card directly on the terminal to make a call.
â—† Features of the program 1. Long-distance recognition uses 2.4G RFID long-distance sensing technology. When a person passes through, there is no need to actively swipe the card. As long as the card is hung on the chest or in a schoolbag, it can be identified by directly passing through it.
2. The humanized fast-passenger personnel do not need to wait and can pass through directly. They can identify >500 cards at the same time, and can support distances up to 80 meters.
3. High recognition rate Within 80 km/hour, the recognition rate can reach 100%, while the bit error rate is one tenth of a million, which can meet the high recognition rate requirements.
4. The data reports the attendance records in real-time. The platform is reported to the real-time report through the school information terminal to facilitate the query management.
◆ Network topology ◆ Accessibility Attendance System Components 1. 2.4 GHz Remote Reader 22.4G Remote Sense Reader has a “Directional Recognition†channel, which has a long read distance, fast recognition speed, and multiple electronic The card also performs the recognition function.
1.1, features:
PVC plastic, strong wear-resistant; stable and reliable performance, accurate credit card records;
The communication Module increases resistance to strong electric shock and lightning protection, and the communication process is safe and reliable.
Fast data acquisition ensures data reliability and integrity;
1.2, performance:
Operating frequency: 2.4GHz-2.5GHz ISM microwave section working mode: read-only tag type;
Recognition method: Directional recognition, ellipse sensing area;
Recognition distance: 3-80 meters;
Anti-collision: Can identify >100 cards at the same time;
Data interface: standard configuration Wiegand26, RS485, RS232;
Power adapter: DC+9V;
Working temperature: -40°C~+85°C;
2. 2.4 GHz active electronic tag 22.4G active composite card is based on the active card to increase ID / IC card function, adding positioning, waterproof and other functions. The default setting of the card is to fire once every 1 second.
2.1, features:
ID card function, support 125K proximity card reader;
IC card function, support 13.56Mhz proximity card reader;
Suitable for frequency hopping work mode, with super anti-interference ability;
Users can customize reading and writing standard data;
Effective reading distance up to 80 meters or more;
The ultra-wide working frequency band design not only meets relevant industry regulations, but also enables flexible development and application.
Can read and write multiple tags at the same time, regardless of the number of tags in the work area;
Storage area for users to read, write, erase and rewrite operations;
2.2, performance:
Tag category: card;
Operating frequency: 2.45GHz;
Induction mode: automatic sensing optional;
Recognition distance: 3-80 meters;
Material: PET, high temperature, waterproof
Overall size: 85*55*5.5mm;
Weight: 20g;
Battery: Built-in lithium button, can be used continuously for 2 years;
3. School News Terminal 2 School News Terminal communicates with the 2.4G long-distance proximity card reader through the 485 mode, collects attendance data and reports it to the school information communication platform.
3.1, function:
Instant Attendance Notification: The student will be swiped to the school and the terminal will send it to the platform in real time to notify parents.
SMS notifications: You can check the notices published by the school at the terminal (platform support);
Family phone: Through the family number selection, quickly realize the common number dialing function;
SMS sending: built-in student's commonly used short message can be downloaded through the system platform to update;
View messages: Students can see parents when they swipe their cards at the terminal, and teachers leave messages for themselves;
Toll-free calls: emergency toll-free calls can be set up, service hotline functions;
3.2, performance:
32-bit ARM CPU
Support ID card and IC card;
Built-in rechargeable battery, standby time more than 48 hours;
The use of nickel-metal hydride battery performance is stable and safe, and more environmentally friendly;
Large screen display, high brightness, high backlight, easy to use;
Support external attendance machine, maximum support 8;
Outdoor model design, waterproof, anti-corrosion, sun protection;
Large storage space, can store 5000 ID information;
Can save 10,000 family love numbers offline, support offline call;
Design SMS mode network management platform to support remote software upgrades to adapt to changes in the platform;
â—† Principles of student entry and exit attendance recognition 2 In order to realize the attendance recognition of students entering and leaving the school, the system is equipped with two 2.4G long-distance proximity readers. As shown in Figure 2, suppose the two readers are identified as point A and point B respectively. Point A is generally installed at the gate of the school. Point B is installed in the main aisle of the school. When students go through point A After the B-point machine, it is judged that the student enters the school. When the student first passes through the B-point machine and passes through the A-point machine, the system judges that the student is leaving school. The schematic diagram is as follows:
The identification method of entering and leaving the school: the school news through the terminal every 2 seconds to the AB point inquiries whether there is card data reported, if the AB point to read the card number is not the same, then the data will be saved. If the card number read by the AB point is the same, the judgment time determines whether the attendance record is the entry/exit school (A time is less than B time is entering the school, B time is less than A time is taken out), and the record is converted into attendance information. School News platform.
Product advantages â—† 2.4G reader product advantages Multi-protocol compatible;
Wide channel with "omnidirectional recognition";
Reading distance is far;
Fast recognition speed;
Multi-electronic card reading at the same time, can read and write multiple tags at the same time (up to 500/s);
Industrial design;
The advantages of 2.4G active electronic labels are composite card design;
Using frequency hopping mode, with superior anti-interference ability;
Effective reading distance up to 80 meters or more;
With waterproof function;
The storage area allows users to perform encrypted read, write, erase and rewrite operations. It also opens up the advantages of a dedicated user-dedicated dedicated private area scheme:
â—† Excellent networking mode 2 Multi-Academium 2.4G accessibility attendance scheme Using the school messaging terminal and 2.4G card reader combined to achieve a long-distance reading of electronic tags, real-time communication with the platform, call the family phone, send a safe SMS and other functions. The 2.4G reader + campus host method promoted by other operators is more convenient to implement and has more functions. After the installation of the equipment, the service can be opened.
â—† Low implementation cost 2 With many years of experience in the development and implementation of the school's information and communications platform, Duoao Technology has unique advantages in product design and cost management. The implementation cost of the plan is about 1/3 less than that of other equipment manufacturers. It does not require the use of a dedicated campus host. It can also make full use of the existing school communications equipment to upgrade, not only making full use of existing equipment, but also reducing the overall Implementation costs.
â—† More convenient implementation and maintenance 2 Accessibility Attendance equipment does not require special settings and is not affected by network viruses, operating system failures, etc. The equipment is safe and reliable. It can be replaced when a fault occurs. It can be quickly implemented and maintained to improve customer satisfaction. This solution communicates with the platform through the school's GPRS terminal. The wireless communication method has greater flexibility than the wired method, and at the same time, the network maintenance work is reduced to a minimum.
â—†More scalable card 2 Shenzhen Doo Technology's barrier-free attendance method adopts 2.4G electronic tag and IC, ID card's composite card scheme, integrates IC and ID card functions in the same card, which not only protects existing investment At the same time, most of the existing one-card devices use the 13.56M scheme, so the composite card is easier to expand and can be docked with the school's one-card system.
â—† More comprehensive application functions 2 Thanks to the use of a composite card, the card can be used not only for attendance, but also for calling and sending phone calls and sending terminal messages. The original school messaging terminal function can be used normally.
Note: Doo company provides active 2.4G+IC/ID RFID tags and readers and provides software SDK, back-end school messaging, software can use the original system or a new development system!
1.The Milling tool include Wash Over Pipe, mlling shoe, wash over spear, etc. All the products possess the advantages of reliable performance, easy operation. etc.
2.Milling tool assembled from two metal parts, the first part of which is a shank
(1)The second part of which is a flat, plane cutting-edge carrier .
(2) which is provided for rotating about an axis lying in its plane and has two cutting edges , it is proposed that the cutting-edge carrier.
(3) Surround and hold the shank ,can solution creates an especially inexpensive-to-produce, light and stable milling tool.
Milling Tool,Wash Over Pipe,Novel Spear,Milling Shoe
Puyang Junhong Rubber Co., Ltd. , https://www.pyjhxs.com