Ren Microelectronics RFID remote barrier-free automatic induction access control attendance statistics management program
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I. Overview
With the social and economic development and prosperity, the flow of people in various industries continues to increase. The focus is on how to more quickly and accurately control the flow of people entering and leaving the door, and automatically and accurately record the information of people entering and leaving, which is an urgent need for automatic access control and automatic attendance. Level issues.
Due to the development of digital technology and microelectronics technology, RFID access control systems have long surpassed the traditional doorway and key management functions. The safety requirements of the modern working environment, departmental administrative management, daily attendance management, company catering consumption, etc., are all closely related to the access control system. Departments such as apartments, residential quarters, factory patrols, company R&D technical departments, medical units’ non-disturbance areas, finance and finance are all ideal places for the application of RFID access control systems.
At the same time, it is also required to reflect the humanization and intelligence of technology. The smart electronic tags worn by personnel can be carried arbitrarily, which does not give people a sense of control, and at the same time, it is convenient to use. , Automatic attendance. The installation of the electronic tag induction antenna should not have an adverse visual impact on the original building, and maintain the overall beauty of the building.
The remote barrier-free automatic identification and personnel access recognition 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 an access control controller, a remote collector, an induction antenna, a radio frequency tag, background management software, and a database.
2. Functional design
System topology diagram
When someone carries an 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 continuously without any 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 a pocket, in a bag, or hung on the chest of an employee, as an electronic identification tag.
2. The tag sensing distance is stable. When reading and writing electronic tags in a fixed area, the sensing distance cannot be set too far or too close. If the sensing distance is too far, it is easy to cause misreading, and if it is too close, it may not be sensed.
3. The label position has no directionality and can be placed arbitrarily, and the barrier-free recognition distance and range cannot be affected by the position.
4. RFID reading and writing equipment has multiple anti-collision capabilities. There are many people coming in and out during peak hours. The system can accurately identify all tags at the same entrance and exit at a high speed, and the identification capability can reach 1,000 electronic tags per second.
5. Accurately judge the direction of entry and exit of personnel, not just a simple entry and exit record, to prevent the occurrence of accidental entry and exit. Only one record is generated for one entry or exit, avoiding misidentification records caused by the phenomenon of returning without completely entering and exiting the door.
6. The same in or out direction will not be counted repeatedly within the set time range. When someone enters and exits a place multiple times, the final statistical result is only one or zero times, and the redundant invalid data is automatically removed.
7. The radio frequency signal generated during the electronic tag identification is harmless to the human body and conforms to the national radiation safety standards.
8. The tag is an active electronic tag, which combines high and low frequencies to shield the human body or articles carried by the human body without obstacles, ensuring accuracy and timeliness.
9. The tag works passively. It will only emit a signal when the tag is within the sensing range, and the tag will stop working when it is not within the sensing range, saving tag energy.
10. The label power supply is battery-powered, which can be replaced freely and can be recycled for a long time. The label service life can reach more than 5 years.
Three, implementation of the plan
1. The active high-low frequency hybrid electronic tag and low-frequency reader electronic tag used in the design of this system is a truly fast, accurate, and long-distance barrier-free induction radio frequency identification product. The reading distance of the electronic tag can reach hundreds of meters, covering the channel The width can be up to tens of meters, and it can identify up to 1000 electronic tags at the same time, and the reading speed of the electronic tags can reach 200 kilometers per hour, so it can accurately identify and track the direction of 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 through the electronic tag With the inter-signal inquiry and response between 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 and external in a certain output format. Controller or other terminal equipment to realize long-distance and barrier-free recognition of electronic tags.The following flow chart
3. Install an RFID low-frequency long-distance sensing antenna at the gate. The specific size needs to be determined according to the actual situation. When the person carrying the electronic tag reaches the channel where the antenna is installed, the antenna can sense the tag and return the information ID in the tag. After the tag is transmitted to the tag, the tag then wirelessly transmits the radio frequency signal to the reader, and the reader is transmitted to the access control controller by wire. The tag number is passed to the background management software, and the entry and exit records and directions are automatically judged and identified without obstacles. The manager can monitor and manage the entry and exit of each channel in real time, and record the position of the personnel inside and outside the door.
4. Extend the application
1) The access control record can also be used as a basis for attendance. Add the attendance function to the background management software to manage the attendance of the unit employees.
2) Fire-fighting linkage management function. When a fire alarm occurs, the fire-fighting system management terminal will send a switch signal to the access control system to force the door to open automatically to avoid personnel jams.
3) Video surveillance linkage function. When the system successfully recognizes the electronic tag signal, it will generate an action signal to the camera to capture on-site pictures and record the scene of the tag holder’s on-site card swiping 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 door, the infrared alarm system on both sides of the door will send out an alarm reminder to remind the door guard to find illegal intruders in time.
The RFID-CZ series of long-distance active electronic tags used in the solution can be used for long-distance and barrier-free automatic identification, as well as short-distance automatic identification, realizing access control, attendance, consumption, visitors, elevators, vehicles, patrol management, etc. all-in-one An electronic tag communication function, long-distance reader output with standard WG34/26 interface, which can be connected to most standard access controllers or all-in-one machines. In addition, the long-distance barrier-free induction active electronic tag also has the characteristics of non-copying, safe and reliable, long life, reusable, etc. The non-contact reading of the electronic tag makes the mechanical wear of the electronic tag basically ignored, and the electronic tag can also be printed on it. The photo is used as a work permit.
Four, product introduction
1. Tag reader
2. Electronic label
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