RFID technology-based unit vehicle entry and exit design basis,Microchip Syringe manufacturer

　　RFID technology-based unit vehicle entry and exit design basis

　　"Interim Provisions on the Design and Management of Intelligent Building Systems Engineering" Ministry of Construction 1997

　　"Code for Electrical Design of Civil Buildings" (JGJ/T16-92) Ministry of Construction

　　"Intelligent Building Design Standard" (DBJ08-4-95) Shanghai Construction Committee 1996

　　"Code for Design of Integrated Wiring Engineering for Buildings and Building Groups" China Engineering Construction Standards Association 1997

　　"Code for Construction and Acceptance of Comprehensive Wiring Engineering for Buildings and Building Groups" China Engineering Construction Standards Association 1997

　　"Building Communication Integrated Wiring System" (UD/T926) Ministry of Posts and Telecommunications 1997

　　"Code for Design of Automatic Fire Alarm System" State Planning Commission 1988

　　2.3 Construction goals and principles

　　1, goal

　　The safety function of vehicle custody;

　　Economical and reasonable operating costs;

　　Convenient and fast way of passage, better service to owners;

　　Improve the grade of the community;

　　2, principle

　　Advanced and mature technology and equipment to ensure the safe, reliable and stable operation of the system;

　　Perfect management system to prevent vehicle loss to the greatest extent, which is more convenient for owners;

　　Reasonable layout, improve the service quality of the system, shorten the service time, and increase the efficiency of vehicle traffic;

　　Practicability, real-time, completeness principle;

　　principles of scalability and ease of maintenance;

　　3, management system

　　The general idea of the management system is that the scene is unattended and fully intelligent. Managers can exercise full control over the parking lot at any fixed location outside the parking lot environment, complete various statistics, monitoring, alarms, guidance and other functions, which greatly reduces management. The amount of labor of the personnel, and can provide a brand-new modern atmosphere for the owner.

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　　The overall construction plan of unit vehicle access system based on RFID technology

　　3.1 The working principle of the system

　　The tag is placed in the car. When the car is near the door of the unit, the tag will be activated by the 125K signal from the ground line of the low-frequency activator.

　　After 　　 is activated, the 2.4G signal of the tag is in working state at this time, and 2.4G signal (ID number) is sent out. After receiving the 2.4G signal (ID number) of the tag from the long-distance omnidirectional reader nearby, it will make the relay in the 2.4G long-distance omnidirectional reader device work and give a switch signal for the control of opening the door. After receiving the switch signal from the 2.4G long-distance omnidirectional reader device, the control board will actively send voltage to the door opening motor. At this time, the door opening motor works to open the entrance and exit unit doors.

　　Unit vehicle entry and exit management system based on semi-active RFID technology

　　After the vehicle leaves the unit door and leaves the 125K low-frequency activation area, the 2.4G signal of the 2.4G electronic tag stops working. After the 2.4G long-distance omnidirectional reader cannot read the 2.4G electronic tag, the 2.4G remote reader The relay will stop sending the switch signal to the control board. At this time, the door opening control board will stop sending the door opening voltage to the unit door motor. The door opening control board will automatically give a closing voltage, and the unit door will automatically close.

　　3.2 System topology

　　Unit vehicle entry and exit management system based on semi-active RFID technology

　　The vehicle access management system can adopt various network topologies. The server and the management workstation are connected in the form of a local area network (LAN), and the computer is connected to the lower computer by RS485 bus type; simple, quick to put into use, and good system stability. The highest rate of return on investment. The block diagram of its topology is as follows:

　　For the entrance and exit control system, the server is responsible for the important task of the entire system. The rapid access of data is an issue worthy of concern, but the safety of data cannot be ignored. Once the hard disk fails or the data is lost or damaged due to improper operation, it will The entire system enterprise will have a huge impact on the system. It can be seen that the value of the data stored by the server far exceeds the value of the machine itself, and the SQL server selection cannot be ignored. The vehicle management system with the entrances and exits together only needs a computer to manage it. If the entrances and exits are separated and there are many temporary vehicles, it is best to place a computer at each entrance and have a security guard on duty. In order to deal with emergencies.

　　The first level network is distributed by RS485 bus system, which mainly provides communication for each entrance and exit control machine, and the card reading data is taken; the second level network is LAN Ethernet star connection, computer and computer communication and data storage, SQL server is responsible for Data query and processing, distribution of network resources, and classification review of the authority of each workstation.

　　3.4 System product use and installation principle

　　Unit vehicle entry and exit management system based on semi-active RFID technology

　　1, electronic label installation location

　　The electronic tag is placed in the car;

　　The application of electronic tags in the vehicle management system is to install the tags on the front windshield of the car cockpit.

　　The best position of the electronic tag: If the card reader is installed on the left side of the road in the forward direction (driver's side), then the tag should also be installed on the left side of the car's windshield (position A, E). If the card reader is on the right side of the road in the forward direction (the driving side), the label should also be affixed to the right side of the car's windshield (position C, D). If the card reader is directly above the lane, the tag should be installed near the center line of the car's rearview mirror or car windshield (position B, F). For small cars (including ordinary vans), the electronic label should be installed above the front windshield (position A, B, C) as much as possible. For large vehicles (large trucks or buses, etc.), the electronic tags should be installed in the direction below the front windshield (D, E, F positions), generally based on the principle of not blocking the driver's line of sight.

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