Electronic RFID long-distance barrier-free automatic induction access,Waterproof Wristband

　　Electronic RFID long-distance barrier-free automatic induction access control attendance statistics management scheme

　　I. Overview

　　With the development and prosperity of the social economy, the flow of people in various industries continues to increase. The focus is on how to control the flow of people entering and leaving the door more quickly and accurately, and automatically and accurately record the information of people entering and leaving, which is the urgent need for automatic access control and automatic attendance. level problem.

　　Due to the development of digital technology and microelectronics technology, RFID access control systems have already surpassed the traditional doorway and key management functions. The safety requirements of the modern working environment, the administrative management of the department, the daily attendance management, the company's catering consumption, etc., are all closely related to the access control system. Departments such as apartments, residential quarters, factory patrols, company R&D technology departments, medical units do not disturb areas, financial and other departments are all ideal places for RFID access control system applications.

　　At the same time, it is also required to reflect the more humanized and intelligent technology. The smart electronic tags worn by personnel can be carried arbitrarily, without giving people the feeling of being under control, and at the same time, they are convenient to use. There is no need to brush according to the established route requirements, and the door will automatically open as long as they pass the door. , Automatic attendance. The installation of the electronic tag induction antenna should not have adverse visual impact on the original building, and maintain the overall beauty of the building.

　　The long-distance barrier-free automatic induction identification and personnel entry and exit identification management system designed and developed by our company can fundamentally solve this problem, reduce labor management costs, and improve management efficiency. The system consists of access control controller, remote collector, induction antenna, radio frequency tag, background management software, database and so on.

　　2. Functional design

　　System topology

　　When someone carries the electronic tag from a distance to a certain distance in front of the door, starting from reading the electronic tag → unlocking → pushing the door in, a series of actions are completed coherently without any need to stop in front of the door. The features of this program are as follows

　　1. The electronic tag carried by the personnel can be placed anywhere on the body, such as in the pocket, in the bag, or hung on the chest of the employee as a certificate electronic tag.

　　2. The tag sensing distance is stable. Read and write electronic tags in a fixed area. The sensing distance can not be set too far or too close. If the sensing distance is too far, it is easy to cause misreading. If it is too close, it may not be sensed.

　　3. The label position has no directionality and can be placed arbitrarily. The barrier-free recognition distance and range cannot be affected by the position.

　　4. The RFID reading and writing equipment has multiple anti-collision capabilities. There are many people entering and leaving at the peak time of commuting or commuting. The system can accurately identify all the tags at the same entrance and exit at high speed, and the recognition ability can reach 1,000 electronic tags per second.

　　5. Accurately determine the direction of entry and exit of personnel, not just simple entry and exit records, to prevent the occurrence of wrong entry and exit. Only one record is generated for each entry or exit, avoiding misidentified records caused by the phenomenon of returning without complete entry and exit.

　　6. The same incoming or outgoing direction will not be counted repeatedly within the set time range. When someone enters and leaves a place for many times, the final count result is only one or 0 times, and the redundant and invalid data burden is automatically removed.

　　7. The radio frequency signal generated by the electronic tag identification is harmless to the human body and conforms to the national radiation safety standard.

　　8. The label is an active electronic label, the high and low frequency are combined with each other, which can block the barrier-free influence on the human body or the objects carried by the human body, and ensure the accuracy and timeliness.

　　9. The tag works passively. Only when the tag is within the sensing range will the signal be emitted. When it is not within the sensing range, the tag will stop working, saving tag energy.

　　10. The label power supply is battery powered, which can be freely replaced and used for long-term recycling. The service life of the label can reach more than 5 years.

　　3. Implementation

　　1. The active high and low frequency hybrid electronic tags and low frequency reading electronic tags used in this system design are real fast, accurate, long-distance barrier-free induction RFID products, and the reading distance of electronic tags can reach hundreds of meters, covering the channel. The width can reach tens of meters, and it can identify up to 1,000 electronic tags at the same time. The reading speed of electronic tags can reach 200 km/h, so it can accurately identify and track fast-moving objects or people at a long distance.

　　2. When the electronic tag is within the recognition range of the electronic tag reader, the electronic tag is activated by the electromagnetic signal continuously emitted by the electronic tag reader, thereby feeding back a response signal carrying the electronic tag ID to the reader, which is precisely through the electronic tag. With the signal inquiry and response between the electronic tag reader and the electronic tag reader, the electronic tag reader can accurately and quickly identify the ID carried in the electronic tag, and output the read electronic tag ID to the computer, external Controller or other terminal equipment, so as to realize long-distance barrier-free identification of electronic tags. The following flow chart

　　3. Install the RFID low-frequency long-distance sensing antenna at the gate. The specific size should be determined according to the actual situation. When the person carrying the electronic tag arrives at the channel where the antenna is installed, the antenna can sense the tag and return the ID information in the tag to the ID card. It is transmitted to the tag, the tag then wirelessly transmits the radio frequency signal to the reader, and the reader transmits it to the access controller by wire. The label number is passed to the background management software, and the entry and exit records and directions can be automatically judged and identified without barriers. Managers can monitor and manage the entry and exit of personnel in each channel in real time, and record the positions of personnel inside and outside the door.

　　4. Extended application

　　1) The access control record can also be used as the basis for attendance, and the attendance function is added to the background management software to manage the attendance of the employees of the unit.

　　2) Fire protection linkage management function, when a fire alarm occurs, the fire protection system management terminal will send a switch signal to the access control system, forcing the door to automatically open to avoid people blocking.

　　3) Video surveillance linkage function, when the system successfully recognizes the electronic tag signal, it will generate an action signal for the camera to capture the scene picture, record the scene of the tag holder swiping the card on the spot, as one of the auxiliary means of access control management.

　　4) Infrared alarm function, if the tag identification is unsuccessful or there is no tag and directly enter the gate, the infrared alarm system on both sides of the gate will issue an alarm prompt to remind the gate management personnel to detect illegal intruders in time.

　　The RFID-CZ series long-distance active electronic tags used in the scheme can be used for long-distance barrier-free automatic identification, or short-distance automatic identification, realizing all-in-one management of access control, attendance, consumption, visitors, elevators, vehicles, and patrol management. One electronic label pass function, the long-distance reader output has a standard WG34/26 interface, which can be connected to most standard access control controllers or all-in-one machines. In addition, the long-distance barrier-free sensing active electronic tag also has the characteristics of non-replication, safety and reliability, long life, and reuse. Photo as work permit.

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