Personnel access control entry and exit management area positioning,Chip Wristband

　　Personnel access control entry and exit management area positioning system scheme based on semi-active RFID technology

　　The first part of the development background of semi-active RFID system

　　With the gradual improvement of the intelligent management system and the continuous updating of information facilities, the ability of security prevention and control has been greatly enhanced. In view of the current archives, large factories, prisons, nursing homes, hospitals, schools, enterprises and institutions, large squares, large shopping malls, government departments, intelligent communities and large public places for personnel entry and exit management and intelligent regional positioning The needs of precise positioning , Combined with the advantages of our company's semi-active RFID technology, our company has specially developed this system "personnel access control entry and exit management area positioning system based on semi-active RFID radio frequency identification technology", which solves the problem of automatic entry and exit judgment management of personnel, Accurate positioning of personnel, regional positioning management. The system can also realize intelligent monitoring and management, personnel information management, cross-border alarm, button help alarm, tracking and other functions. It greatly improves the internal security and management efficiency of important places such as archives, improves management efficiency, and reduces the work intensity of managers. At the same time, the system has an open interface and has various expansion functions, such as linkage with video surveillance system to achieve refinement manage.

　　The second part is the introduction of semi-active RFID technology

　　1. Introduction to RFID Technology

　　RFID (Radio Frequency Identification Technology) is a non-contact automatic identification technology that automatically identifies target objects and obtains relevant data through radio frequency signals. Conceptually, RFID is similar to barcode scanning. The barcode scanning technology attaches the encoded barcode to the target and uses a special scanning reader to transmit the information from the bar magnetic to the scanning reader using photoelectric signals; while RFID Then use a special RFID reader and a special RFID unit that can be attached to the target, and use RF signals to transmit information from the RFID unit to the RFID reader.

　　At present, there are roughly three categories of products derived from RFID technology: passive RFID products, active RFID products, and semi-active RFID products.

　　Passive RFID products developed the earliest, and are currently the most mature and widely used products in the market. For example, bus cards, canteen meal cards, bank cards, hotel access cards, second-generation ID cards, etc., can be seen everywhere in our daily life and belong to the category of close-contact identification. The main operating frequencies of its products are low frequency 125KHZ, high frequency 13.56MHZ, ultra-high frequency 433MHZ, and ultra-high frequency 915MHZ.

　　Active RFID products have been developed slowly in recent years, and their long-distance automatic identification characteristics determine their huge application space and market potential. At present, it has major applications in the field of long-distance automatic identification, such as smart prisons, smart hospitals, smart parking lots, smart transportation, smart cities, smart earth and the Internet of Things. Active RFID has sprung up in this field and belongs to the category of long-distance automatic identification. The main operating frequencies of the products are UHF 915MHZ and microwave 2.45GHZ.

　　Active RFID products and passive RFID products, their different characteristics determine different application fields and different application modes, and also have their own advantages. However, in this system, we focus on introducing semi-active RFID products between active RFID and passive RFID. This product integrates the advantages of active RFID and passive RFID. In access control management, personnel can be accurately positioned. , Regional positioning management, perimeter management, electronic fence and security alarm and other fields have great advantages.

　　Second, the introduction of semi-active RFID technology

　　Semi-active RFID products, combined with the advantages of active RFID products and passive RFID products, under the trigger of the low frequency 125KHZ frequency, let the microwave 2.45G play an advantage. Semi-active RFID technology, also known as low-frequency activation trigger technology, uses low-frequency short-range precise positioning, microwave long-distance identification and uploading data to solve functions that pure active RFID and passive RFID cannot achieve. Simply put, it is to activate positioning at close range, identify and upload data at a long distance. Really achieve the general demeanor of "developing strategies and winning thousands of miles away".

　　3. Features and advantages of semi-active RFID technology

　　Semi-active RFID is a flexible application technology that is easy to control, simple and practical, and especially suitable for automatic control. The identification work does not require manual intervention. It can support both read-only working mode and read-write working mode without contact. Or aiming; can work freely in various harsh environments, short-range RF products are not afraid of harsh environments such as oil stains and dust pollution, and can replace barcodes, such as tracking objects on the factory assembly line; long-range RF products are mostly used in traffic, The recognition distance can reach tens of meters, such as automatic toll collection or vehicle identification. Its unique advantages are beyond the reach of other identification technologies, mainly in the following aspects:

　　Easy and fast to read:

　　The reading of data does not require a light source, and can even be carried out through the outer packaging. The effective recognition distance is larger, and the effective recognition distance can reach more than 30 meters;

　　Fast recognition speed:

　　As soon as the terminal enters the magnetic field, the reader can read the information in it immediately, and can process multiple terminals at the same time to realize batch identification;

　　Large data capacity:

　　The two-dimensional barcode (PDF417) with the largest data capacity can only store up to 2725 numbers; if it contains letters, the storage capacity will be less; the RFID terminal can be expanded to dozens of K according to the needs of users;

　　Long service life and wide application range:

　　Its radio communication method makes it possible for the staff to work in the highly polluted environment and radioactive environment such as dust and oil pollution without being in it. The closed packaging of the terminal makes the lifespan much longer than that of printed barcodes;

　　The label data can be dynamically changed:

　　Data can be written using the programmer, thus giving the RFID tag the function of an interactive portable data file, and the writing time is less than that of printing a barcode;

　　Better security:

　　Not only can it be embedded or attached to products of different shapes and types, but also password protection can be set for the reading and writing of terminal data, so that it has higher security;

　　Dynamic real-time communication:

　　The terminal communicates with the reader at a frequency of 50 to 100 times per second, so as long as the object attached to the RFID terminal appears within the effective recognition range of the reader, its position can be dynamically tracked and monitored.

　　The third part is the general introduction of semi-active RFID system

　　1. System principle

　　Through the application of RFID (electronic label), the APS real-time positioning and tracking system uses the electronic label as the most advanced identification code at present. It has the characteristics of non-breakage, reliable data, long service life and long effective communication distance. It is an alternative to bar code and infrared identification. the best choice. It is installed on the controlled target to be used as the unique identification of the target for tracking and positioning.

　　At work, managers track and locate targets through networked wireless identification base stations.

　　1) Semi-active RFID tags

　　Semi-active RFID electronic tags are integrated with the advantages of active RFID electronic tags and passive RFID electronic tags, as a special marker. In normal circumstances, it does not work in a dormant state, and does not send RFID signals to the outside world. Only when it enters the activation signal range of the low-frequency activator and the tag is activated, it starts to work.

　　2) The working principle of semi-active RFID automatic identification

　　Combined with the low frequency activator, the semi-active RFID tag works normally after being activated. The activation distance of the low-frequency activator is limited, and it can only be accurately activated in a small distance and a small range. In this way, the low-frequency activator is used as the base point to locate, install different base points in different positions, and then use the long-distance activator in a large area. The reader recognizes the read signal, and then uploads the signal to the management center in different uploading methods, thus completing the entire process of signal acquisition, transmission, processing, and application.

　　3) The principle of regional positioning

　　We use RFID semi-active technology for personnel area positioning management. In each monitored area, such as each room, we install a semi-active positioning base station, which is our company's low-frequency activator. Each low-frequency activator has 4 channels. Or 6-way activation antenna, adjacent 4 or 6 rooms can share a low-frequency activator, in the whole of our positioning system, the positioning base station is the smallest base point, as the nearest base point of the positioning point, its activation tag The distance is 3-3.5 meters, that is, each tag is activated within the range of 3-3.5 meters of the activator, and its positioning accuracy can be described as 3-3.5 meters. Activators in different areas have their own unique address codes. When a person enters the positioning base station with a semi-active low-frequency activation tag and is activated, the tag will work normally, send the ID number of the tag to the outside world, and also send out the activation tag. The address code of the activator, so that we can locate the location of the label through the address code of the activator. When the label is taken from one activator to another, the uploaded activator address code will also change accordingly, thus forming a complete positioning system. The data uploaded by the tag is received by a large-scale positioning base station gateway, and the information is uploaded to the management center for processing, completing the entire positioning system.

　　2. The overall structure of the system

　　1) System composition and architecture

　　The personnel area positioning management system based on semi-active RFID technology consists of semi-active RFID electronic tags, semi-active low-frequency activators, readers (receivers, electronic monitoring base stations), network equipment, computers, servers and system software. The following figure shows the system architecture of a simple personnel area positioning management system:

　　Personnel access control entry and exit management area positioning system scheme based on semi-active RFID technology

　　2) Schematic diagram of system area positioning

　　Personnel access control entry and exit management area positioning system scheme based on semi-active RFID technology

　　As shown in the figure above: through the address codes of the activators uploaded by different activated tags, the situation of the personnel near different activators can be judged, including the number of personnel, names, positions and other information. In this way, no matter where the personnel go, the local activator will lock them to determine their specific location, and upload the information to the management center in a timely manner, and the management center will obtain relevant results after a series of transformation processing. At the same time, it is also very easy to complete our established purpose, which is to manage the regional positioning of personnel.

　　3) Access control access management system

　　As shown in the figure above, we install a low-frequency activator for each access control that needs to be managed. Each activator leads to 2 low-frequency activation antennas, namely No. 1 antenna and No. 2 antenna, which are respectively arranged outside and inside the access control. A 2.45G long-distance reader, independently developed and produced by our company, is installed next to the access control as a signal receiver. When a person wears a semi-active RFID low-frequency activation tag and enters the access control, it is activated by the activation antenna No. 1 and the activation antenna No. 2 in turn, so that the system judges that the person enters the access control. On the contrary, the system recognizes it as going out. In this way, the management of the entry and exit judgments of the entire access control system is completed.

　　4) Concealed installation of equipment

　　When installing the equipment, we can make full use of the basic conditions of the installation site and flexibly grasp the installation method. Generally, our activated antenna is installed on the ceiling, and it is installed secretly to form a beautiful and concise style.

　　3. Function of the system

　　Real-time control area target dynamic display function:

　　1) Query and display the number, distribution and identity of targets in the controlled area at any time;

　　2) Query the actual position of one or more controlled objects;

　　3) It can realize multi-point sharing of information for multiple departments and leaders to view in different places at the same time;

　　Rich map features:

　　It has the functions of zooming in, zooming out, moving, ruler ranging, vision control, center movement, soil layer control, map printing, etc.

　　Restricted area alarm function:

　　For the designated restricted area, if there is unauthorized entry, it will alarm in real time, and display the target and identity of entering the restricted area.

　　Target trajectory query:

　　It can find the path experienced by a target in a certain period of time, and draw the line trajectory in the picture.

　　Rich controlled target attendance ability:

　　It can make statistics on the goals entering and leaving the control area, realize the attendance records of the goals, and establish various information reports of the goals (such as time reports, monthly attendance reports, overtime reports, absence reports, etc.).

　　Emergency control:

　　Once there is an emergency, the host computer can immediately display the target number, information, location and historical situation of the site, which greatly improves the efficiency and effect of safety management.

　　4. System performance characteristics

　　Powerful system processing capability:

　　1) Highly automated;

　　2) Geographic information display and query system based on GIS technology;

　　3) Perfect data analysis ability;

　　Excellent recognition performance:

　　1) High recognition reliability, 100% front-end recognition rate;

　　2) The recognition distance is long (the recognition distance can be adjusted up to 2-100 meters);

　　3) Extremely high anti-collision (each identification base station can identify hundreds of moving targets at the same time);

　　4) High recognition stability (bit error rate is less than 1/100,000);

　　5) Fast recognition speed (up to 200 km/h recognition speed).

　　On-site advantages:

　　1) Environmental adaptability: high anti-interference, no special requirements for interference source and surrounding environment;

　　2) Ease of installation: integrated structure design, no need for external antenna;

　　3) Operational reliability: The internal circuit is highly integrated, and the device failure rate is minimized.

　　Electrical Characteristics:

　　1) Ultra-low power consumption: Nanowatt-level ultra-low power consumption design, the RFID tag can work normally for more than 3 years without changing the battery;

　　2) Convenience and safety, the label does not need an external power supply, no need to charge, no need to replace the battery;

　　3) No radiation, no impact on human body and environment, safer and healthier.

　　System hardware design:

　　1. Industrial control frequency band

　　The use of 2.4G industrial control frequency band wireless communication does not require the approval of the Radio Regulatory Commission and does not need to pay spectrum occupation fees.

　　2. Ultra-low power consumption

　　The RFID tag adopts a unique nanowatt-level ultra-low power consumption design, which ensures that it can continue to work for about 3 to 5 years under the support of the battery. At the same time, the low-power design of the overall structure not only ensures the effective operation of the device, but also reduces the complexity and cost of application implementation.

　　3. Large network capacity

　　An area positioning network can accommodate as many as 60,000 RFID-identified targets and a large number of access points. The large capacity ensures the powerful data collection capability of the network. At the same time, the high redundancy of the network ensures that the entire network can still operate normally when individual nodes stop working.

Read recommendations:

M04 ISO11784/5 Animal Microchip Implant

M03 ICAR Certifiicated Injected Under Skin Microchip

M02- Pet Microchip with Needle Pack

RFID management and control scheme of property involved,RFID Tags

RFID material receiving and dispatching management system solution,RFID Seal