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1. Project features
The biggest feature of the project is that it combines mature smart card technology, wireless communication technology, and advanced software technology, organically integrates various mature technologies, and applies them to actual engineering needs.
- At the management station, the non-contact smart ID card is used for automatic identification and management of entering and exiting vehicles. Smart card management is the foundation and direction of the information management of various management systems;
- In the user, the non-contact rapid identification of vehicles and the automatic identification and comparison of the user’s identity ensure the safety and protection of personal property, as well as the simplicity and speed of normal entry and exit procedures.
- The information source of each sub-management station and the processing terminal of the central management system are combined through a wireless bridge or internal network.
2. System function description
The device is divided into two parts:
One part is a microwave signal identification device, that is, the entrance and exit communicator, which can be installed above the entrance and exit of the control vehicle. The other part is an electronic tag. The system equips each parking user with a registered electronic tag, which can be installed in a proper position in the front windshield of the vehicle. There is an identification code inside the module.
When the vehicle reaches 6-8 meters from the entrance of the community, the vehicle detector detects the existence of the vehicle, starts the entrance communicator, and detects the identity code (ID) in the electronic tag of the coming vehicle. The ID is loaded in the form of microwave and transmitted to Communicator. The ID code in the owner’s electronic tag is preset in the information database of the communicator, indicating that the tag belongs to the parking lot, and the brakes are opened quickly and automatically, and the vehicle can pass smoothly without stopping. The entire system response time Only 0.9 seconds.
2.1 System composition
It is composed of an electronic tag attached to the car body, a transceiver antenna at the entrance and exit of the garage, a tag reader, a camera controlled and activated by the reader, a background management platform, and an internal communication network.
- Central control room equipment (computer, management software, etc.)
- Entrance equipment (entrance communicator, railing machine, vehicle detector, etc.)
- Export equipment (basically the same as entrance equipment)
- Electronic tags (same as the number of registered vehicles)
As shown above: the RFID antenna is controlled by the reader to continuously transmit radio waves to search. When the vehicle passes through the warehouse transceiver, the on-board transceiver is triggered and emits code information that can uniquely indicate the identity of the vehicle (such as license plate number, vehicle type) , Vehicle color, license plate color, bank account number, unit name, user name, etc.), and at the same time receive identification inspection, video storage information, the warehouse management station transceiver receives the signal, processed and transmitted to the computer system for data management and Archive for inquiries. Carry out information storage (in-warehouse) or information comparison (out-warehouse), and control the movement of the barriers at the entrance and exit after confirmation.
2.3 Function description
RFID technology provides independent and uninterrupted system services for parking lot management and security, ensuring that only licensed vehicles can pass. A digital management system for parking services and fee collection is realized.
- Can realize the control of all vehicles in the field;
- Realize computer vehicle information management
- In the case of unattended, the system automatically records the time of entry and exit of the vehicle and the license plate number
- System parameter setting
- Vehicle management for non-registered users
- Always report to the police for problem vehicles;
- Collect and fully grasp the garage status and vehicle seat information through a portable reader;
- Speed up the timely search and delivery of vehicles;
- Strengthen the control and management of vehicles with delayed rental expenses;
- Provide a complete record of every moment of appearance.
3. Performance indicators
3.1 Indoor terminal (reading collector)
- Working frequency 902-928MHz
- Working mode fixed frequency or frequency hopping (software setting)
- Power range +25～+34dBm
- The working distance can be up to 10m
- Communication port RS—232: 1port9-pin DB-9Female
- The maximum communication rate is 57600bps
- Operating voltage DC+5V, current less than 4 amperes
Power adapter AC input 110～220V - Working temperature -30°～+80°
3.2 Vehicle terminal (identification card)
- Working frequency 902-928MHz
- Working mode: Broad-spectrum frequency hopping, fixed frequency mode
- Card memory capacity EEPROM total 1024Bits
- Programmable memory capacity 928Bits
- Card base material ceramic package
- Read and write response time Read 1.4ms Write 30ms
- Anti-interference performance anti-collision communication protocol; binary tree anti-collision mechanism. Number of reading cards ≥50/s
- Working temperature -40°～+85°
4. Engineering features
The system has very high automatic control functions, strong anti-interference ability, high accuracy rate, small amount of engineering, strong resistance to damage, wide range of resistance to high and low temperatures, and strong ability to resist oil pollution during the implementation and installation process. The whole system is flexible and maneuverable.
- For small single entrance and exit management places, it can be completed by using the single Tao reading system;
- For medium-sized management sites, it can be realized by connecting multiple outlets through data transmission lines;
- For large-scale management areas, by means of zone division, adding readers at the entrances and exits of each area can realize unmanned automatic management of the whole area, and patrol statistics can also be carried out through the handheld readers of security personnel;
- For more safety considerations, the separation of the two cards between the person and the vehicle (especially suitable for long-term residents), the identification system can only take effect after the comparison and identification of the vehicle card and the master card match, which is a higher level of safety management.
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