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1. System introduction
The visitor real-time tracking and positioning system is an extension system that is extended and integrated on the basis of the new intelligent visitor management system. By registering and issuing long-distance RFID cards to visitors, the system uses Internet of Things technology and wireless electronic radio frequency positioning technology to track the location of visitors in real time, and locate visitors in real time within the effective range of the supervision area.
The system is based on modern radio coding communication technology, applies signaling technology and wireless transmitting and receiving technology in modern radio communication technology, and combines the current popular technologies such as data communication, data processing and graphic display software. The system can timely and accurately reflect the dynamic situation of personnel in each area to the terminal management center, so that managers can grasp the total number and distribution of visitors at any time.
2. Demand analysis
According to the security requirements of XX Electric Power Bureau, in order to ensure the overall operation safety of the building, it is now necessary to standardize the management of visitors entering and leaving the building. At the same time, in the key prevention area of the unit, it is strictly forbidden for foreign visitors to enter at will, which is the top priority in security prevention.It is hoped that by installing wireless positioning devices on each floor, by identifying visitors who enter the building and registerRFIDCards (card information is visitor information) to achieve real-time tracking and positioning of personnel, and at the same time analyze through the terminal system to deal with illegal visitors in a timely manner.
3 Scheme design
3.1 System principle
Each floor is equipped with a set of wireless base stations, the number of base stations is set according to the floor structure, the number is 6-8, and the identification distance is 30 meters (adjustable)
Card-bearing visitors enter the floor, and each base station on the floor will automatically identify the visitor information of the RFID card, and transmit the information to the terminal server for data analysis and processing.
When the floor entered by the visitor is consistent with the registration information when the card is issued, the information identified by the base station will be transmitted to the terminal server for data analysis. If the system identification is valid, no warning will appear, and a visitor list will be generated at the terminal. The operator can click to query For a visitor in the current building visitor personnel list, all the running trajectories of the visitor will be presented one by one, until the visitor logs out and leaves, and the records are stored and saved.
When the visitor enters the floor and the registration information when the card is issued is inconsistent, the information identified by the base station is transmitted to the terminal server for data analysis. If the system identification information is abnormal, an alarm prompt will appear, and the terminal will immediately display the visitor’s personnel information and the visitor’s movement track. , the security personnel can immediately go upstairs to ask.
3.2 Design basis
3.2.2 System structure diagram
3.2.3 System functions and features
The positioning accuracy is less than 2 meters
Restricted area alarm function: For the designated restricted area, if there are unauthorized persons entering, the alarm will be sounded in real time, and the number and identity of the people entering the restricted area will be displayed.
Post-disaster emergency information: In the event of various accidents, the terminal can display information such as the number of personnel, personnel information, and personnel positions at the accident site, which greatly improves the rescue efficiency and rescue effect.
Support video linkage: related video linkage record and query.
The management software supports ONVIF international security equipment interface standard.
Support access to Weili new multi-security system integration platform
Real-time personnel dynamic display
Display the number, distribution and identity information of each floor at any time.
Query the actual location and activity track of one or more people
Powerful system processing ability: statistics, analysis information, perfect data analysis ability, the whole process does not need human intervention
Environmental adaptability: high anti-interference, no special requirements for perimeter environment
Installation convenience: sensor integrated structure design, no need for external antenna or ground sense
Operational reliability: The internal circuit is highly integrated, and the device failure rate is minimized
4. Parameters
Base station parameters
Frequency: 2.4G
Communication method: 458 or ZIGBEE
Communication distance: 1KM
Support standard: IEEE802.15.4/ZIGBEE
Power consumption: less than 500MW
Power: +12V
Working temperature: -40-85 degrees
Card Issuer Parameters
USB interface or RS232 interface
RFID card parameters
Frequency: 2.4G
Communication method: 458 or ZIGBEE
Communication distance: 30M
Wake on Wireless: Support
Battery life: greater than 5 years
Working temperature: -45-85 degrees
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