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1. What is a smart electronic license plate
Intelligent electronic license plate is a new type of electronic license plate formed by combining ordinary license plate with RFID technology. An intelligent electronic license plate is composed of a normal license plate and an electronic license plate. The electronic license plate is actually a wireless identification electronic tag. The encrypted vehicle data is stored in the electronic license plate. Its data can only be read by authorized wireless identifiers. At the same time, a monitoring base station (the monitoring base station is composed of a camera, a radio frequency reader and a data processing system) is set up on each traffic artery. The monitoring base station is connected to the central server through GPRS, and to the police PDA through WLAN. The law enforcement officers carry the PDA and stand in front of the monitoring base station. When the vehicle passes the monitoring base station, the camera will take pictures of the physical license plate of the vehicle. After processing by the monitoring base station image recognition system, the license plate number of the physical license plate is obtained; at the same time, the radio frequency reader reads it After the encrypted vehicle information in the electronic license plate is decrypted by the monitoring base station, the license plate number of the electronic license plate is obtained. Since the electronic license plate after hardware design, software design, and data encryption is impossible to be copied, and each car is only equipped with one, if it is a fake license plate, the license plate number of the physical license plate must not have the corresponding electronic The license plate number of the license plate, the monitoring base station immediately sends the license plate of the physical license plate via WLAN to the PDA of the traffic police in front, prompting the traffic police to intercept. Similar principle, the intelligent license plate system can also complete the identification of blacklisted vehicles and illegal operating vehicles at the same time.
Second, the use of smart electronic license plates
The intelligent electronic license plate system can accurately identify the following vehicles:
Robbery and smuggling of vehicles
Fake deck vehicle
Illegal operation of vehicles
Vehicles with unpaid fines for violations
Scrapped vehicle
Vehicles that have not been inspected annually
Vehicles that have not paid true road maintenance fees
Vehicles that have not paid the vehicle and vessel use tax
Did not buy a compulsory third party liability insurance vehicle
Unlicensed vehicle
Third, the composition of the intelligent electronic license plate system
(1) Intelligent electronic license plate
Intelligent electronic license plate is an active electronic radio frequency card, which uses advanced CMOS 0.18 um low-power integrated circuit, which meets the design of small size and low-power performance, and the working current is about 12-18uA, 3V. Its ultra-low power design enables the intelligent electronic license plate to have a battery life of more than 4 years without affecting the transmission distance.
Performance parameter
Frequency: 2.4GHz;
Working temperature: -20°C~80°C;
Communication distance: up to 100 meters
Communication rate: 1Mbps
Working current: 12～18uA, 3V
RF power: 0dBm
Modulation mode: GFSK
Anti-conflict: can recognize 100 cards at the same time
Working mode: read-only
Service life: 4 years
Dimensions: strip type 90*31*11mm; card type 85.5*54*4mm
(2) Monitoring base station
a. Fixed monitoring base station
The fixed monitoring base station is composed of an intelligent license plate recognizer and an antenna. The recognizer adopts advanced 0.18um CMOS circuit, high density, low cost, and small size design, suitable for various radio frequency identification schemes, and can also carry out various network layouts. The antenna is an omnidirectional design, which can identify and track targets in all directions. Users can adjust the recognition distance of the reader according to actual needs to make the recognition range more accurate.
Performance parameters:
Identification method: omnidirectional identification, standard λ/4 rubber whip antenna;
Recognition distance: 0～100 meters;
Working frequency: 2.4GHz-2.5GHz ISM microwave range;
RF power: 0dBm;
Receiving sensitivity: -90dBm;
Communication rate: 1Mbps;
Anti-conflict: can recognize 100 cards at the same time;
Working current: 50mA, 5～12V (fixed)
Modulation mode: GFSK Working temperature: -20°C~80°C;
Monitoring vehicle speed: greater than 120KM/H;
Recognition speed: more than 50 vehicles/sec;
Working mode: direct mode/buffer mode;
The direct mode is to send immediately after receiving the Tag signal, and the buffer mode is to store the received Tag signal until the host requests it to be sent;
Buffer storage: 800 latest Tag data;
Interface mode: support multiple interface modes, RS232/485, TCP/IP, CAN-bus, ZigBee, WiFi, GPRS;
Dimensions: 126*104*28mm
b. Mobile monitoring base station
The mobile monitoring base station is a mobile mini reader that can only recognize license plates. It consists of a 2.4GHz active RFID mini mobile reader and a built-in mini antenna. It has low power consumption and small size. It can be directly connected to PDAs and notebooks through a USB interface. Or connect with a smart phone to complete the rapid identification of high-speed moving objects and generate time records.
Performance parameters:
Recognition method: omnidirectional recognition, built-in antenna
Recognition distance: 0～100 meters
Working frequency: 2.4GHz-2.5GHz ISM microwave range
RF power: 0dBm
Receiving sensitivity: -90dBm
Working current: 50mA, 5～12V
Modulation mode: GFSK
Working mode: direct mode/buffer mode; direct mode is to send immediately after receiving the tag signal, and buffer mode is to store the received tag signal until the host requests it to be sent
Buffer storage: 800 latest Tag data
Communication rate: 1Mbps
Anti-conflict: can recognize 100 cards at the same time
Interface mode: USB
Dimensions: 88.8*26.6*13.3mm
(3) Vehicle identification system
Installed on the base station, collect information such as the license plate numbers of passing vehicles, and perform data analysis to determine problematic vehicles such as fake license plates, illegal operations, and illegal operations.
(4) Image recognition processing system
Installed on the base station (AID GEEF), image processing is performed on the license plate and operation logo collected by the camera to identify the license plate number and operation information.
(5) Command center management system
Installed in the command center to update the blacklist in the base station;
Receiving the information of problem vehicles and passing vehicles uploaded by the base station;
Monitor whether the base station is operating normally;
Remotely control the operation of the base station;
Perform data analysis on the data uploaded by the base station, and output analysis reports for decision-making.
(6) Central data exchange server
The data transfer server is installed in the command center and connects the software system of the command center with the base station for data exchange.
(7) Intelligent electronic license plate management system
Installed in the vehicle management office, connected with the vehicle information system of the Ministry of Public Security and the GEEF command center system, to perform registration, initialization and annual inspection management of electronic license plates.
(8) PKI/CA certification system
Issuing digital certificates for legal users and authenticating the issued legal digital certificates to ensure the security of the system.
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