CN111667690A - Internet of things electronic license plate device based on active RFID and implementation method - Google Patents

Internet of things electronic license plate device based on active RFID and implementation method Download PDF

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Publication number
CN111667690A
CN111667690A CN202010462233.9A CN202010462233A CN111667690A CN 111667690 A CN111667690 A CN 111667690A CN 202010462233 A CN202010462233 A CN 202010462233A CN 111667690 A CN111667690 A CN 111667690A
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module
license plate
vehicle
electronic license
data
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CN111667690B (en
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柯捷
蒋昌茂
张余明
杨鸣坤
朱昌洪
邓维
郭振军
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Guilin University of Aerospace Technology
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Guilin University of Aerospace Technology
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0125—Traffic data processing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
    • G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
    • G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0841—Registering performance data
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096775—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a central station
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • G08G1/165—Anti-collision systems for passive traffic, e.g. including static obstacles, trees
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • G08G1/166—Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • G08G1/167—Driving aids for lane monitoring, lane changing, e.g. blind spot detection
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • G08G1/168—Driving aids for parking, e.g. acoustic or visual feedback on parking space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/024—Guidance services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/025—Services making use of location information using location based information parameters
    • H04W4/027—Services making use of location information using location based information parameters using movement velocity, acceleration information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Traffic Control Systems (AREA)

Abstract

The invention relates to the technical field of intelligent traffic, in particular to an Internet of things electronic license plate device based on active RFID and an implementation method thereof, wherein the Internet of things electronic license plate device comprises a power module, a processor module, an active RFID module, an EMC and ESD module, a 5G module, a SIM card module, a Beidou module, an OBD module, an acceleration sensor, a collision sensor and a temperature sensor; the electronic license plate recognition is realized through the active RFID, the recognition precision is high, the vehicle code information ID is globally unique, the vehicle code information ID of the electronic license plate is recognized through the Internet of things electronic license plate gateway, the vehicle code information ID and the vehicle position information are transmitted to the traffic management system in real time, various electronic information and running track information of the vehicle are obtained, the traffic information is mastered in real time, and the informatization level of the traffic management is improved.

Description

Internet of things electronic license plate device based on active RFID and implementation method
Technical Field
The invention relates to the technical field of intelligent traffic, in particular to an Internet of things electronic license plate device based on active RFID and an implementation method.
Background
Under the encouragement of the global smart city trend and the national policy, the construction trend of the smart city is started by many provinces and cities in China. The construction of smart cities should start with intelligent traffic. The traditional urban traffic management mode has the defects that the social problems of population sharp increase, sudden increase of traffic volume, rapid increase of private automobiles, increasingly congested urban traffic and the like are difficult to solve, and the sharp contradiction between traffic demand and traffic facility supply cannot be relieved only by building roads, so that intelligent traffic becomes a primary means for relieving the contradiction. In the first step of intelligent traffic construction, the use of electronic license plates of automobiles must be popularized, because the electronic license plates are the basis for realizing an intelligent traffic internet of things system.
At present, the domestic intelligent traffic electronic license plate basically adopts an electronic tag mode, the electronic tag adopts a passive RFID technology, the electronic license plate is arranged at the windshield of a front vehicle window, the technical characteristics of RFID high-precision identification, high-accuracy acquisition and high sensitivity are utilized, the RFID electronic license plate is used as a vehicle information carrier, vehicle attribute information such as vehicle types and the like is stored in a corresponding area of the electronic tag, and when a motor vehicle passes through a road section provided with an authorized radio frequency identification reader-writer, data on the electronic license plate of each motor vehicle is acquired or written in, so that the purpose of various comprehensive traffic management is achieved.
The problems of the current domestic electronic license plate are as follows:
1) the electronic license plate adopts an UHF RFID frequency band, belongs to an UHF passive RFID frequency band, is limited in reading distance and is obviously influenced by environmental parameters (rain, fog and the like), and the phenomenon of reading missing exists in reading;
2) the electronic license plate adopts an ultrahigh frequency passive RFID frequency band, cannot be butted with the existing high-speed toll ETC, and needs to be additionally provided with an ETC special card;
3) the electronic license plate is arranged at the front windshield in a mode of separating from the traditional license plate, is not combined with the traditional license plate into a whole, and needs to be handled twice by a user.
In recent years, with the mass of rural population being in the urban area, the urban road traffic operation pressure is increasing. Particularly, in a central urban area, traffic congestion occurs frequently during rush hours and commutes. How to apply emerging technologies such as the internet of things to novel intelligent traffic construction becomes a problem which needs to be solved by the intelligent traffic construction of a new era. In order to promote the development of economic society and bring convenience to people going out, the technology of the internet of things is integrated to promote novel intelligent traffic construction, and the method becomes a new choice for promoting the development of the traffic industry.
Disclosure of Invention
In order to solve the problems, the invention provides an Internet of things electronic license plate device based on active RFID and an implementation method thereof, which effectively combine technology, active RFID technology, 5G communication technology, Beidou technology, embedded technology, sensing technology and the like to realize intelligent sensing and positioning of an effective area of a vehicle so as to acquire relevant information of the vehicle, realize integrated management of vehicle and license, high-speed charge management, traffic violation, escape management, vehicle positioning and tracking management and the like, effectively replace ETC electronic tags and traditional license plates, improve the intellectualization of traffic management, simultaneously combine relevant sensors and video monitoring with the electronic license plates, acquire vehicle data through an OBD module, classify and analyze the acquired data by combining fault diagnosis methods such as fuzzy theory and the like through modern mathematical means, realize behavior analysis and monitoring of a driver, realize UBI (driving behavior insurance) fast claim and the like, the driving data can be shared by insurance enterprises, and reference bases are provided for insurance claims and insurance rates.
The Internet of things electronic license plate embeds active RFID technology, Beidou technology and 5G technology into a motor vehicle license plate, and a traffic management mechanism based on the Internet of things electronic license plate is constructed by combining the technology. The method can improve the target, method, effect and efficiency of national traffic management to a new level, and furthest reduce the imposition, embezzlement and imitation when congestion charging, parking lot charging, traffic police fine, highway charging and the like of partial roads and areas in the city are involved. The specific technical scheme is as follows:
the Internet of things electronic license plate device based on the active RFID comprises a power module, a processor module, an active RFID module, an EMC and ESD module, a 5G module, a SIM card module, a Beidou module, an OBD module, an acceleration sensor, a collision sensor and a temperature sensor;
the power supply module is used for providing a working power supply; the processor module is used for gathering, storing, processing and analyzing the electronic license plate data of the Internet of things; the active RFID module is used for writing, reading and processing vehicle code information ID and realizing non-contact identification with the electronic license plate gateway; the EMC and ESD module is used for realizing circuit electromagnetic protection of the electronic license plate of the Internet of things; the 5G module is used for transmitting the data of the electronic license plate of the Internet of things; the SIM card module is used for installing a 5G communication network card; the Beidou module is used for acquiring position data of the electronic license plate of the Internet of things; the OBD module is used for collecting vehicle data, classifying and analyzing the collected data and realizing behavior analysis and monitoring of a driver; the acceleration sensor is used for detecting the motion state of the vehicle body and transmitting detection data to the processor module; the collision sensor is used for detecting an obstacle in front of the vehicle body and transmitting detection data to the processor module; the temperature sensor is used for detecting the external environment temperature of the vehicle body and transmitting detection data to the processor module; the power module, the active RFID module, the EMC and ESD module, the 5G module, the SIM card module, the Beidou module, the OBD module, the acceleration sensor, the collision sensor and the temperature sensor are respectively connected with the processor module.
Preferably, the active RFID module includes a second DC-DC unit, an MCU processor, a wireless radio frequency unit, a clock circuit, a matching circuit, a power amplifier, a low noise amplifier, and an electronic switch;
the second DC-DC unit is used for performing voltage conversion and converting an external power supply into a proper working power supply;
the MCU processor is used for receiving the instruction of the processor module to realize the writing, reading and processing of the vehicle coded information ID;
the wireless radio frequency unit is used for receiving the vehicle coded information ID sent by the MCU processor, realizing modulation and demodulation of the vehicle coded information ID, receiving the radio frequency signal sent by the matching circuit, carrying out relevant demodulation processing, and transmitting the demodulated relevant information to the MCU processor for relevant processing;
the clock circuit is used for providing a stable working clock for the wireless radio frequency module;
the matching circuit is used for realizing impedance matching with the wireless radio frequency module, the power amplifier and the low-noise amplifier;
the power amplifier is used for receiving the modulation signal transmitted by the matching circuit, amplifying the power of the modulation signal and transmitting the modulation signal to the electronic switch;
the low-noise amplifier is used for receiving a low level signal transmitted by the matching circuit, amplifying the low level signal by low noise power, and transmitting the amplified low level signal to the wireless radio frequency module for demodulation;
the electronic switch is used for receiving a control switching signal of the MCU processor and realizing the transmission and receiving processing of radio frequency signals;
the second DC-DC unit is connected with the MCU processor, and the MCU processor, the clock circuit and the matching circuit are respectively connected with the wireless radio frequency unit; the matching circuit is respectively connected with the power amplifier and the low-noise amplifier; the power amplifier and the low-noise amplifier are respectively connected with the electronic switch.
Preferably, the active RFID module further comprises a communication interface, a JTAG interface; the communication interface is used for the active RFID module to communicate and connect with external data; the JTAG interface is used for program burning of the MCU processor, and the exterior of the JTAG interface is connected with the JTAG burner, so that program erasing, burning and online upgrading of the MCU processor are realized; the communication interface and the JTAG interface are respectively connected with the MCU processor.
Preferably, the device further comprises an interface module; the interface module comprises one or more of a video interface, a display interface and a data interface; the video interface is used for being connected with an external camera to acquire an external video; the display interface is used for being connected with external display equipment to display related data; the data interface is used for realizing data interaction between the electronic license plate and the external interface; the interface module is connected with the processor module.
Preferably, the device further comprises a display module; the display module is used for displaying related data; the display module is connected with the processor module.
Preferably, the power supply module includes a first DC-DC unit; the first DC-DC unit is used for voltage conversion and providing a proper working power supply.
Preferably, the power module further comprises a solar charging unit and a lithium battery; the solar charging unit is respectively connected with the processor module and the lithium battery; the lithium battery is connected with the first DC-DC unit.
An implementation method of an Internet of things electronic license plate device based on active RFID comprises the following steps:
step 1, starting a system and initializing a device;
step 2, the processor module is connected with a 5G micro base station or an electronic license plate gateway through a 5G module to realize data communication with a traffic management system;
step 3, the processor module is communicated with a traffic management system to realize writing, reading and processing of the vehicle code information ID of the Internet of things electronic license plate, and the Internet of things electronic license plate obtains the globally unique vehicle code information ID to generate an electronic license plate identity;
step 4, the processor module is communicated with a traffic management system to realize the identification management of the electronic license plate, when the motor vehicle provided with the electronic license plate of the Internet of things drives into a radio frequency signal area provided with an electronic license plate gateway, the active RFID module receives the instruction sent by the electronic license plate gateway, analyzes the instruction and then sends the instruction to the processor module for response, the active RFID module transmits the vehicle coding information ID of the electronic license plate and related information to the electronic license plate gateway to realize non-contact identification, the electronic license plate of the Internet of things is identified by the electronic license plate gateway, the electronic license plate gateway acquires the vehicle information, the vehicle information is accessed to a traffic management system through a 5G micro base station communication link to verify the identity, and vehicle authentication management, vehicle traffic management, vehicle safety management and road planning management are carried out, writing the related information into a traffic management system for storage processing, and simultaneously performing related management and query by a traffic management department through the traffic management system; the vehicle owner accesses the traffic management system through the APP to perform account information query, violation information query and fee deduction information query;
step 5, the processor module is communicated with a traffic management system to realize vehicle position information management, and the Beidou module transmits the acquired position data to the traffic management system through the 5G module to perform related processing and analysis so as to realize vehicle positioning and navigation position service; the vehicle owner accesses the traffic management system through the APP to perform vehicle navigation position service;
step 6, the processor module communicates with the traffic management system to realize management of the motion state of the vehicle body, the acceleration sensor transmits the collected related data to the processor module for analysis and processing, the processor module is connected with external vehicle image equipment through a display interface to display the related data in real time to remind a driver to realize safe driving, and meanwhile, the related data is uploaded to the traffic management system to be subjected to related analysis and processing;
7, the processor module is communicated with a traffic management system to realize the detection and management of the obstacles in front of the vehicle body, the collision sensor transmits the collected related data to the processor module for analysis and processing, the processor module is connected with external vehicle image equipment through a display interface to display the related data in real time to remind a driver to realize safe driving, and meanwhile, the related data can be uploaded to the traffic management system to perform related analysis and processing;
step 8, the processor module communicates with a traffic management system to realize detection and management of the external environment temperature of the vehicle body, the temperature sensor transmits the acquired environment temperature data to the processor module for analysis and processing, the environment temperature data is connected with external vehicle image equipment through a display interface to display related data in real time, a driver is reminded to pay attention to cold protection and warm keeping, the opening state of an air conditioner in the vehicle is adjusted, and meanwhile, the related data can be uploaded to the traffic management system to be subjected to related analysis and processing;
9, the processor module is communicated with a traffic management system to realize behavior analysis and monitoring management of a driver, the OBD module is externally connected with an automobile ECU interface, the OBD module is internally connected with the processor module, the numerical values of various sensors of the automobile electric control system are converted into data in a UART format, the data are output to the processor module to be analyzed and processed, the processor module is connected with external automobile image equipment through a display interface to display related data in real time to remind a driver of paying attention to safe driving, and meanwhile, the related data can be uploaded to the traffic management system to be analyzed and processed;
step 10, the processor module communicates with a traffic management system to realize vehicle image monitoring management, the video interface is connected with an external camera to acquire an external video, the interior of the processor module is connected with the processor module to perform related processing and analysis of the acquired video, the processor module is connected with an external vehicle image device through the display interface to display related data in real time to remind a driver of paying attention to safe driving, and meanwhile, the related data can be uploaded to the traffic management system to perform related analysis and processing; by connecting an external camera, the external environment condition is monitored, and backing service, vehicle following early warning and lane departure early warning are realized; the driving behavior of a driver in the vehicle is monitored by connecting the camera in the vehicle, and the behavior data of the driver and the vehicle driving data are collected in real time by combining an OBD module, so that the behavior monitoring of the driver is realized, and the UBI fast claim settlement is realized;
step 11, the processor module is communicated with a traffic management system to realize the display management of the related data of the electronic license plate, and the display module receives the data transmitted by the processor module to display the related data;
12, the processor module is communicated with a traffic management system to realize the solar charging management of the electronic license plate, the solar charging module is externally connected with the solar panel, the interior of the solar charging module is connected with the lithium battery to charge and store energy for the lithium battery, and the processor module is connected to realize the charging management;
and step 13, finishing the whole working cycle, keeping the processor module in real-time communication with the traffic management system, repeating the step 4, and periodically working to realize the related application management of the electronic license plate device of the Internet of things.
The invention has the beneficial effects that: the invention provides an Internet of things electronic license plate device based on active RFID and an implementation method thereof. The combination of the RFID technology and the active RFID technology brings new transition in the aspects of vehicle registration management, vehicle traffic management, vehicle charging management and the like, and is embodied in the following main aspects:
(1) vehicle registration management: the vehicle provided with the Internet of things electronic license plate passes through the Internet of things electronic license plate gateway identification area to complete automatic radio frequency identification of the vehicle, and the vehicle is compared with the record information of a background database of a traffic management system to find the truth and falsity and check the inspection record (such as environmental protection detection, insurance purchase and the like), so that the public security inquires illegal vehicles. The traffic monitoring based on vehicle identification is carried out, a traffic management mechanism based on the Internet of things electronic license plate is constructed, fine operation of traffic law enforcement is carried out, and various traffic illegal behaviors are strictly checked. The electronic certificate management system has the advantages that the electronic certificate is realized, the passing checking efficiency is improved, paperless, automatic and intelligent pass management is realized in a mode that the passing information obtained by the background is compared with the checking result automatically by the front end, and the imposition, embezzlement and imitation are reduced to the maximum extent.
(2) Vehicle traffic management: after the automatic radio frequency identification of the vehicle is completed, the macro and local regulation and control and the advancing path positioning function are carried out on the urban driving vehicle, and the linkage of people and vehicles, vehicles and vehicles, and vehicles and backstage is generated. The traffic information acquisition system can be reasonably matched with other traffic information detection methods to realize full-coverage acquisition of vehicle information, form a traffic information acquisition mechanism which comprehensively and truly reflects traffic states, further enhance the grasp of the traffic management system on microscopic and macroscopic traffic conditions through the application of detailed traffic flow data, and further provide powerful support for traffic guidance, control and decision making.
(3) Vehicle charging management aspect: the traffic 'one-card' in the true sense including urban congestion charging, freeway flow charging and the like is realized by adopting the most advanced and safe background electronic payment mode in congestion charging, parking lot charging, traffic police fine, freeway charging and the like of partial roads and areas in the city.
The electronic license plate of the + Internet of things +5G Internet of things is a requirement for traffic fine management, is a most effective technical means for traffic management such as relieving traffic jam, optimizing vehicle management and actively collecting traffic information, and can improve the target, method, effect and efficiency of national traffic management to a new level. The concept of traditional car and traffic is thoroughly overturned, the mode and the habit of people's trip are changed, intelligent transportation is promoted to develop more rapidly, and the environment of going on a journey that is more convenient, efficient, green, safe also will be provided for the public, creates more beautiful life.
Drawings
FIG. 1 is a schematic diagram of an Internet of things electronic license plate device based on active RFID;
FIG. 2 is a schematic diagram of an active RFID module;
FIG. 3 is a schematic diagram of a radio frequency unit;
FIG. 4 is a circuit schematic of a low noise amplifier;
FIG. 5 is a circuit schematic of the electronic switch;
FIG. 6 is a circuit schematic of an OBD module;
fig. 7 is a flowchart of an implementation method of the internet of things electronic license plate device based on the active RFID.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings in which:
as shown in fig. 1, the internet of things electronic license plate device based on active RFID comprises a power module, a processor module, an active RFID module, an EMC and ESD module, a 5G module, a SIM card module, a big dipper module, an OBD module, an acceleration sensor, a collision sensor, and a temperature sensor; the power supply module is used for providing a working power supply; the processor module is used for gathering, storing, processing and analyzing the electronic license plate data of the Internet of things; the active RFID module is used for writing, reading and processing vehicle code information ID and realizing non-contact identification with the electronic license plate gateway; the EMC and ESD module is used for realizing circuit electromagnetic protection of the electronic license plate of the Internet of things; the 5G module is used for transmitting the data of the electronic license plate of the Internet of things; the SIM card module is used for installing a 5G communication network card; the Beidou module is used for acquiring position data of the electronic license plate of the Internet of things; the OBD module is used for collecting vehicle data, classifying and analyzing the collected data and realizing behavior analysis and monitoring of a driver; the acceleration sensor is used for detecting the motion state of the vehicle body and transmitting detection data to the processor module; the collision sensor is used for detecting an obstacle in front of the vehicle body and transmitting detection data to the processor module; the temperature sensor is used for detecting the external environment temperature of the vehicle body and transmitting detection data to the processor module; the power module, the active RFID module, the EMC and ESD module, the 5G module, the SIM card module, the Beidou module, the OBD module, the acceleration sensor, the collision sensor and the temperature sensor are respectively connected with the processor module.
The power module includes a first DC-DC unit; the first DC-DC unit is used for voltage conversion and providing a proper working power supply. The power module also comprises a solar charging unit and a lithium battery; the solar charging unit is respectively connected with the processor module and the lithium battery; the lithium battery is connected to the first DC-DC unit. The first DC-DC unit provides 12V, 5V, 3.3V power supply and the like for the electronic license plate. The first DC-DC unit receives an externally provided 12V power supply, performs DC-DC conversion on the 12V power supply, converts the 12V power supply into a 5V power supply, a 3.3V power supply and the like, and comprises a voltage stabilizing chip LM 1117.
The lithium battery is a power supply part of the electronic license plate, a 12V power supply circuit is cut off in a vehicle flameout state, the power supply requirement of the electronic license plate in the vehicle flameout state is met by the power supply of the lithium battery, the lithium battery is supplied with power by a high-capacity lithium battery and is connected with a solar charging module, solar energy is converted into electric energy, the battery is charged and stored, the power is supplied for the electronic license plate, energy is saved, and green travel is realized. In order to meet the requirement of instantaneous large current, an energy storage capacitor with low ESR (equivalent series resistance) of more than 220uF is added on a power supply path, filter capacitors with different capacitance values are added on the power supply path, interference is reduced, and an EMI (electro-magnetic interference) related processing circuit is added.
The solar charging module utilizes the surface of the electronic license plate to be irradiated by sunlight, converts solar energy into electric energy, supplies power to the electronic license plate, saves energy and realizes green travel. The solar charging module is externally connected with the solar panel, the solar panel is installed on the inner surface of the electronic license plate, the solar panel and the electronic license plate are installed into a whole, an interface is reserved, an external mode can be adopted, the solar charging module is connected with the lithium battery through the interface, the internal part of the solar charging module is connected with the lithium battery, the lithium battery is charged and stored with energy, the solar charging module is further connected with the ARM core processor, charging management is achieved, the electric quantity of the lithium battery is detected through the ARM core processor, external voltage needs to be connected when the electric quantity is insufficient, and when solar.
The processor module comprises an ARM core processor, wherein the ARM core processor is a data processing center of the electronic license plate and is used for gathering, storing, processing and analyzing the data of the electronic license plate. The dual-core FPGA + ARM11 processor architecture is adopted, a powerful 32-bit ARM11 microprocessor is used as a control and calculation core, and the ARM core processor is further integrated with rich peripheral interfaces such as SPI, USB and Ethernet, so that the number of components of the whole device is greatly reduced, the reliability and the service life of the system are improved, and the material cost, the manufacturing cost and the energy consumption are reduced.
The active RFID module is a core function part of an electronic license plate, a 2.4G radio frequency communication technology is adopted, the interior of the active RFID module is in data communication with an ARM core processor, writing, reading, processing and the like of vehicle code information ID of the electronic license plate are achieved, non-contact identification is achieved between the exterior of the active RFID module and an electronic license plate gateway installed on a roadside or a road gate, the identification distance reaches 200 meters, the identification accuracy is high, the vehicle code information ID is globally unique, the vehicle code information ID of the electronic license plate is identified through the electronic license plate gateway, the vehicle code information ID and vehicle position information are transmitted to a background traffic management system in real time, various electronic information and running track information of the vehicle are obtained, the traffic information is mastered in real time, and the informatization level of traffic.
As shown in fig. 2, the active RFID module includes a second DC-DC unit, an MCU processor, a wireless radio frequency unit, a clock circuit, a matching circuit, a power amplifier, a low noise amplifier, and an electronic switch.
The second DC-DC unit is responsible for power supply of the active RFID module, and is used for performing voltage conversion, converting an external power supply into a proper working power supply and providing 5V and 3.3V power supplies for the active RFID module. The second DC-DC unit receives an externally provided 12V power supply, performs DC-DC conversion on the 12V power supply, and converts the 12V power supply into a 5V power supply and a 3.3V power supply. For satisfying the demand of instantaneous heavy current, increased the energy storage capacitor of the low ESR more than 220uF on supply path, increased the filter capacitance of different appearance values on supply path, reduce the interference to EMI relevant processing circuit has been increased, specifically is: a transient diode, an inductor, a capacitor and a TVS diode are added in parallel at the input position of a circuit power supply, so that EMI electromagnetic treatment is realized. Wherein the second DC-DC unit comprises a voltage stabilizing chip LM 1117.
And the MCU processor is used for receiving the instruction of the processor module to realize the writing, reading and processing of the vehicle coding information ID. The MCU processor adopts an STM32F103 embedded microprocessor, is a data processing center of the active RFID module and is responsible for data processing, aggregation and exchange of the active RFID module. The MCU processor is connected with the ARM core processor to realize data communication and interaction, and the writing, reading, processing and the like of the vehicle coding information ID of the electronic license plate are realized by receiving the instruction of the ARM core processor.
Referring to fig. 3, the wireless radio frequency unit is a radio frequency processing part of the active RFID module, receives the vehicle coded information ID sent by the MCU processor, and implements modulation and demodulation of the vehicle coded information ID, and implements GFSK modulation by combining the vehicle coded information ID with a 2.4G frequency synthesizer, and sends the modulated signal to the power amplifier for transmission after modulating the modulated signal into a 2.4G modulated signal, and meanwhile receives the radio frequency signal sent by the matching circuit, and performs related demodulation processing, and transmits the demodulated related information to the MCU processor for related processing. The radio frequency unit selects a single-chip radio frequency transceiver chip which is provided by Nordic company and is efficiently modulated by GFSK. The chip works in a 2.4GHz global open ISM frequency band, functional modules such as a frequency synthesizer, a power amplifier, a crystal oscillator, a GFSK filter and the like are arranged in the chip, the power consumption of the chip is low, and when the chip is transmitted at the power of-18 dBm, the working current is only 9 mA; when receiving, the working current is only 12.3 mA; the power consumption of the power-down mode and the standby mode is only 1uA, and the power-down mode and the standby mode have various low-power working modes and are beneficial to energy-saving design. Meanwhile, the chip has up to 125 channels to be selected, the switching time of the channels is short, the requirements of multipoint communication and frequency hopping communication can be met, and the anti-interference capability is improved. And the output power, the channel selection and the data communication protocol can be set through the SPI interface, the working requirement of a compatible ETC system is met, the highest write data rate can reach 8Mb/s, and the highest data transmission rate can reach 2 Mb/s. The chip uses an enhanced shockburst mode, the mode can reduce power consumption and average current of the whole system, the anti-interference performance is strong, the chip has the functions of automatic response and automatic retransmission, and the overall performance and efficiency of the system can be obviously improved.
The clock circuit adopts a 16MHz crystal oscillator and is additionally provided with a capacitance matching network to provide a stable working clock for the wireless radio frequency unit, and the crystal oscillator adopts a high-precision crystal oscillator to improve the radio frequency stability, thereby improving the identification distance and precision.
The matching circuit is used for realizing impedance matching with the wireless radio frequency module, the power amplifier and the low-noise amplifier. The matching circuit adopts an LC passive matching network, the value of the LC is accurately selected through simulation design and debugging, the L is selected from 6.8nH and 4.7nH, the C is selected from 4.7pF and 1pF, and two paths of radio frequency differential output of the radio frequency unit realize 1 path of radio frequency matching output through the matching circuit, so that 50 ohm impedance high-efficiency matching with the radio frequency unit, the power amplifier and the low-noise amplifier is realized, the loss is reduced, the output and input power is improved to the maximum efficiency, and the requirement of remote identification is met.
The power amplifier is used for receiving the modulation signal transmitted by the matching circuit, and transmitting the modulation signal to the electronic switch after power amplification. A low-power-consumption amplification chip is adopted, an RFX2401C chip can be selected, a modulation signal transmitted by a matching circuit is received, the modulation signal is subjected to power amplification and then transmitted to an electronic switch, and the modulation signal is transmitted to a PCB antenna through the electronic switch for transmission. The power amplifier has the power amplification capacity of 6dB, improves the output level of the modulation signal and is beneficial to improving the identification distance of the electronic license plate.
Referring to fig. 4, the low noise amplifier receives the low level signal transmitted by the matching circuit by using the low noise amplification chip, amplifies the low level signal with low noise power, and transmits the amplified low level signal to the radio frequency unit for demodulation, so that the problem that the radio frequency unit cannot demodulate a weak signal is solved, the demodulation sensitivity of the radio frequency unit is improved, and the identification distance of the electronic license plate is increased.
Referring to fig. 5, the electronic switch is configured to receive a control switching signal of the MCU processor, so as to implement the transmission and reception processing of the radio frequency signal. The high-power radio frequency electronic switch HMC784 is a high-power SPDT switch, is packaged by an 8-pin MSOP, and is suitable for transmitting-receiving application requiring extremely low distortion performance under high input signal power level. The electronic switch receives the control switching signal of the MCU processor, and the receiving and transmitting switching of the electronic switch is realized. When the control signal of the MCU processor is received to be in a low level, level conversion is realized through the two-stage triode, the output control signal A is in a high level, the control signal B is in a low level and is transmitted to the radio frequency electronic switch, the radio frequency electronic switch is controlled to be conducted with the connecting end of the low noise amplifier, the low noise amplifier signal enters the matching circuit through the electronic switch and is sent to the wireless radio frequency unit for demodulation processing, and radio frequency signal receiving processing is realized. When the control signal of the MCU processor is received to be high level, level conversion is realized through the two-stage triode, the output control signal A is low level, the control signal B is high level and is transmitted to the radio frequency electronic switch, the connection end of the radio frequency electronic switch and the power amplifier is controlled to be conducted, the modulation signal of the wireless radio frequency unit is transmitted to the power amplifier through the matching circuit to be amplified and then output, the amplified modulation signal is transmitted to the electronic switch, and then the modulation signal is transmitted to the PCB antenna through the electronic switch to be transmitted, so that the radio frequency signal transmission processing is realized.
The second DC-DC unit is connected with the MCU processor; the MCU processor, the clock circuit and the matching circuit are respectively connected with the wireless radio frequency unit; the matching circuit is respectively connected with the power amplifier and the low-noise amplifier; the power amplifier and the low noise amplifier are respectively connected with the electronic switch.
The active RFID module also comprises a communication interface and a JTAG interface; the communication interface is used for communicating and connecting the active RFID module with external data and comprises an SPI interface, a USB interface and the like; the JTAG interface is used for program burning of the MCU processor, and the exterior of the JTAG interface is connected with the JTAG burner, so that program erasing, burning and online upgrading of the MCU processor are realized; the communication interface and the JTAG interface are respectively connected with the MCU processor.
The EMC module and the ESD module are responsible for the circuit electromagnetic protection of the electronic license plate, and the problems of signal integrity and power integrity caused by the electromagnetic compatibility problem are fully considered in the design process of the whole product. In order to avoid the circuit from being subjected to electromagnetic interference, EMC processing is carried out, power supply and signal wiring in peripheral circuit layout and wiring are kept at 2-time line width, so that coupling among signals is effectively reduced, and a clean signal backflow path is kept. The key input/output signal interface considers ESD design protection, adds ESD devices and achieves good ESD protection. The EMC module and the ESD module are connected in parallel at the input position of a circuit power supply, and a transient diode, an inductor, a capacitor and a TVS diode are additionally arranged, so that EMI electromagnetic processing is realized.
The 5G module is used for data transmission of the electronic license plate, the inside of the 5G module is connected with the ARM core processor, the outside of the 5G module is connected with the 5G micro base station or the gateway, a 5G modem is adopted, the 3GPP R15 specification is met, and the communication function of large bandwidth, wide connection and low time delay is realized. And the system is responsible for transmitting the related data of the electronic license plate to a traffic management system through a 5G micro base station or an electronic license plate gateway for related processing, analysis and application. The 5G module can select an F03X module, the F03X is an industrial multimode 5G communication module developed based on a high-pass SDX55 platform, supports a 5G NR/LTE-TDD/LTE-FDD/HSPA + communication mode, adopts an M.2 interface, supports NSA and SA dual modes, and provides stable GNSS positioning service.
The SIM card module is used for installing a 5G communication network card, is connected with the 5G module and the ARM core processor, the SIM card interface circuit meets the requirements of ETSI and IMT-2000 SIM interfaces, can support USIM cards powered by 1.8V and 3.3V, supports the hot plug of the USIM card, adds ESD protection devices to signals for ESD protection, and adds parallel capacitors for filtering radio frequency signal interference.
The Beidou module is used for collecting position data of the electronic license plate, is connected with the ARM core processor, and transmits the collected position data to a traffic management system through the 5G module for relevant processing and analysis, so that high-precision positioning and navigation position services of the vehicle are realized. The big dipper module adopts the bimodulus big dipper module technique, solves the high accuracy location problem, realizes accurate positioning, has solved the application problem of the real-time high accuracy location technique of wide area in on-vehicle system. SKG09D big dipper module can be selected to the big dipper module.
As shown in fig. 6, the OBD module is used for collecting vehicle data, classifying and analyzing the collected data, and analyzing and monitoring the behavior of the driver; the OBD module is connected with the processor module. The OBD module is used for collecting vehicle data, and the collected data are classified and analyzed by adopting modern mathematical means combined with fault diagnosis methods such as fuzzy theory and the like, so that the behavior analysis and monitoring of a driver are realized, and the driving safety is ensured. The OBD module is an OBDII protocol data analysis module, supports physical layers of protocols such as ISO9141-2, ISO14230(KWP), ISO15765(CANBUS), is externally connected with an automobile ECU interface, is internally connected with an ARM core processor, converts various sensor data of an automobile electric control system into data in a UART format, outputs the data to the ARM core processor for analysis and processing, is connected with external vehicle image equipment through a display interface, displays related data in real time, reminds a driver to pay attention to safe driving, and can upload the related data to a traffic management system for related analysis and processing.
The acceleration sensor is used for detecting the motion state of the vehicle body, realizing early warning of vehicle accidents such as vehicle running state, bump, inclination and side turning, reminding a driver to adjust driving behaviors and being beneficial to safe driving. The acceleration sensor adopts a three-axis acceleration sensor, collects x-axis data, y-axis data and z-axis data of vehicle operation in real time, is connected with the ARM core processor, transmits related data to the ARM core processor for analysis and processing, is connected with external vehicle image equipment through a display interface, displays the related data in real time, reminds a driver to realize safe driving, and meanwhile, uploads the related data to a traffic management system for related analysis and processing.
The collision sensor is used for detecting obstacles in front of the vehicle body, reminding a driver of adjusting driving behaviors, avoiding collision and being beneficial to safe driving. The collision sensor adopts an infrared sensor, detects the distance of 0-10 meters, collects the front obstacle data of the running vehicle in real time, is connected with the ARM core processor, transmits the related data to the ARM core processor for analysis and processing, is connected with an external vehicle image device through a display interface, displays the related data in real time, reminds a driver to realize safe driving, and simultaneously uploads the related data to a traffic management system for related analysis and processing.
The temperature sensor is used for detecting the external environment temperature of the vehicle body and reminding a driver of keeping warm and keeping cold. The temperature sensor adopts a DHT11 temperature sensor, collects external environment temperature data in real time, is connected with the ARM core processor, transmits related data to the ARM core processor for analysis and processing, is connected with external vehicle image equipment through a display interface, displays the related data in real time, reminds a driver, pays attention to cold protection and warm keeping, adjusts the opening state of an air conditioner in a vehicle, and uploads the related data to a traffic management system for related analysis and processing.
The Internet of things electronic license plate device based on the active RFID further comprises an interface module; the interface module comprises a video interface, a display interface and a data interface; the video interface is connected with an external camera to acquire an external video, the interior of the video interface is connected with the ARM core processor to acquire related processing and analysis of the video, the video interface is connected with external vehicle image equipment through the display interface to display related data in real time to remind a driver of paying attention to safe driving, and meanwhile, the related data can be uploaded to a traffic management system to perform related analysis and processing. By connecting the external camera, the external environment condition can be monitored, and backing service, vehicle following early warning, lane departure early warning and the like are realized. Through connecting camera in the car, can monitor navigating mate's driving action in the car, combine the OBD module, gather driver action data, vehicle data of traveling in real time, realize driver action control, realize UBI (driving action insurance) fast settlement claim etc. can let insurance enterprise share driving data, provide the reference for insurance settlement claim and insurance rate. The display interface is connected with external display equipment to display related data, so that drivers can conveniently watch and know the data in real time, and safe driving is realized. The data interface realizes functions of data interaction, program burning, debugging and the like of the electronic license plate and an external interface, and comprises a serial port, a USB interface, an SPI interface and the like.
The Internet of things electronic license plate device based on the active RFID further comprises a display module; the display module is used for displaying related data; the display module is connected with the processor module. The display module realizes the display of the related data of the electronic license plate, comprises the license plate number and the like, is composed of 7 sections of LED nixie tubes, is internally connected with the ARM core processor, receives the data transmitted by the ARM core processor, displays the related data through the 7 sections of LED nixie tubes, and is arranged on the inner surface of the electronic license plate and is integrally arranged with the electronic license plate.
As shown in fig. 7, the implementation method of the internet of things electronic license plate device based on the active RFID includes the following steps:
step 1, starting a system and initializing a device;
step 2, the processor module is connected with a 5G micro base station or an electronic license plate gateway through a 5G module to realize data communication with a traffic management system;
step 3, the processor module is communicated with a traffic management system to realize writing, reading and processing of the vehicle code information ID of the Internet of things electronic license plate, and the Internet of things electronic license plate obtains the globally unique vehicle code information ID to generate an electronic license plate identity;
step 4, the processor module is communicated with a traffic management system to realize the identification management of the electronic license plate, when the motor vehicle provided with the electronic license plate of the Internet of things drives into a radio frequency signal area provided with an electronic license plate gateway, the active RFID module receives the instruction sent by the electronic license plate gateway, analyzes the instruction and then sends the instruction to the processor module for response, the active RFID module transmits the vehicle coding information ID of the electronic license plate and related information to the electronic license plate gateway to realize non-contact identification, the electronic license plate of the Internet of things is identified by the electronic license plate gateway, the electronic license plate gateway acquires the vehicle information, the vehicle information is accessed to a traffic management system through a 5G micro base station communication link to verify the identity, and vehicle authentication management, vehicle traffic management, vehicle safety management and road planning management are carried out, writing the related information into a traffic management system for storage processing, and simultaneously performing related management and query by a traffic management department through the traffic management system; the vehicle owner accesses the traffic management system through the APP to perform account information query, violation information query and fee deduction information query;
step 5, the processor module is communicated with a traffic management system to realize vehicle position information management, and the Beidou module transmits the acquired position data to the traffic management system through the 5G module to perform related processing and analysis so as to realize vehicle positioning and navigation position service; the vehicle owner accesses the traffic management system through the APP to perform vehicle navigation position service;
step 6, the processor module communicates with the traffic management system to realize management of the motion state of the vehicle body, the acceleration sensor transmits the collected related data to the processor module for analysis and processing, the processor module is connected with external vehicle image equipment through a display interface to display the related data in real time to remind a driver to realize safe driving, and meanwhile, the related data is uploaded to the traffic management system to be subjected to related analysis and processing;
7, the processor module is communicated with a traffic management system to realize the detection and management of the obstacles in front of the vehicle body, the collision sensor transmits the collected related data to the processor module for analysis and processing, the processor module is connected with external vehicle image equipment through a display interface to display the related data in real time to remind a driver to realize safe driving, and meanwhile, the related data can be uploaded to the traffic management system to perform related analysis and processing;
step 8, the processor module communicates with a traffic management system to realize detection and management of the external environment temperature of the vehicle body, the temperature sensor transmits the acquired environment temperature data to the processor module for analysis and processing, the environment temperature data is connected with external vehicle image equipment through a display interface to display related data in real time, a driver is reminded to pay attention to cold protection and warm keeping, the opening state of an air conditioner in the vehicle is adjusted, and meanwhile, the related data can be uploaded to the traffic management system to be subjected to related analysis and processing;
9, the processor module is communicated with a traffic management system to realize behavior analysis and monitoring management of a driver, the OBD module is externally connected with an automobile ECU interface, the OBD module is internally connected with the processor module, the numerical values of various sensors of the automobile electric control system are converted into data in a UART format, the data are output to the processor module to be analyzed and processed, the processor module is connected with external automobile image equipment through a display interface to display related data in real time to remind a driver of paying attention to safe driving, and meanwhile, the related data can be uploaded to the traffic management system to be analyzed and processed;
step 10, the processor module communicates with a traffic management system to realize vehicle image monitoring management, the video interface is connected with an external camera to acquire an external video, the interior of the processor module is connected with the processor module to perform related processing and analysis of the acquired video, the processor module is connected with an external vehicle image device through the display interface to display related data in real time to remind a driver of paying attention to safe driving, and meanwhile, the related data can be uploaded to the traffic management system to perform related analysis and processing; by connecting an external camera, the external environment condition is monitored, and backing service, vehicle following early warning and lane departure early warning are realized; the driving behavior of a driver in the vehicle is monitored by connecting the camera in the vehicle, and the behavior data of the driver and the vehicle driving data are collected in real time by combining an OBD module, so that the behavior monitoring of the driver is realized, and the UBI fast claim settlement is realized;
step 11, the processor module is communicated with a traffic management system to realize the display management of the related data of the electronic license plate, and the display module receives the data transmitted by the processor module to display the related data;
12, the processor module is communicated with a traffic management system to realize the solar charging management of the electronic license plate, the solar charging module is externally connected with the solar panel, the interior of the solar charging module is connected with the lithium battery to charge and store energy for the lithium battery, and the processor module is connected to realize the charging management;
and step 13, finishing the whole working cycle, keeping the processor module in real-time communication with the traffic management system, repeating the step 4, and periodically working to realize the related application management of the electronic license plate device of the Internet of things.
The present invention is not limited to the above-described embodiments, which are merely preferred embodiments of the present invention, and the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. Thing networking electronic license plate device based on active RFID, its characterized in that: the system comprises a power module, a processor module, an active RFID module, an EMC and ESD module, a 5G module, a SIM card module, a Beidou module, an OBD module, an acceleration sensor, a collision sensor and a temperature sensor;
the power supply module is used for providing a working power supply; the processor module is used for gathering, storing, processing and analyzing the electronic license plate data of the Internet of things; the active RFID module is used for writing, reading and processing vehicle code information ID and realizing non-contact identification with the electronic license plate gateway; the EMC and ESD module is used for realizing circuit electromagnetic protection of the electronic license plate of the Internet of things; the 5G module is used for transmitting the data of the electronic license plate of the Internet of things; the SIM card module is used for installing a 5G communication network card; the Beidou module is used for acquiring position data of the electronic license plate of the Internet of things; the OBD module is used for collecting vehicle data, classifying and analyzing the collected data and realizing behavior analysis and monitoring of a driver; the acceleration sensor is used for detecting the motion state of the vehicle body and transmitting detection data to the processor module; the collision sensor is used for detecting an obstacle in front of the vehicle body and transmitting detection data to the processor module; the temperature sensor is used for detecting the external environment temperature of the vehicle body and transmitting detection data to the processor module; the power module, the active RFID module, the EMC and ESD module, the 5G module, the SIM card module, the Beidou module, the OBD module, the acceleration sensor, the collision sensor and the temperature sensor are respectively connected with the processor module.
2. The active RFID-based Internet of things electronic license plate device of claim 1, wherein: the active RFID module comprises a second DC-DC unit, an MCU processor, a wireless radio frequency unit, a clock circuit, a matching circuit, a power amplifier, a low-noise amplifier and an electronic switch;
the second DC-DC unit is used for performing voltage conversion and converting an external power supply into a proper working power supply;
the MCU processor is used for receiving the instruction of the processor module to realize the writing, reading and processing of the vehicle coded information ID;
the wireless radio frequency unit is used for receiving the vehicle coded information ID sent by the MCU processor, realizing modulation and demodulation of the vehicle coded information ID, receiving the radio frequency signal sent by the matching circuit, carrying out relevant demodulation processing, and transmitting the demodulated relevant information to the MCU processor for relevant processing;
the clock circuit is used for providing a stable working clock for the wireless radio frequency module;
the matching circuit is used for realizing impedance matching with the wireless radio frequency module, the power amplifier and the low-noise amplifier;
the power amplifier is used for receiving the modulation signal transmitted by the matching circuit, amplifying the power of the modulation signal and transmitting the modulation signal to the electronic switch;
the low-noise amplifier is used for receiving a low level signal transmitted by the matching circuit, amplifying the low level signal by low noise power, and transmitting the amplified low level signal to the wireless radio frequency module for demodulation;
the electronic switch is used for receiving a control switching signal of the MCU processor and realizing the transmission and receiving processing of radio frequency signals;
the second DC-DC unit is connected with the MCU processor, and the MCU processor, the clock circuit and the matching circuit are respectively connected with the wireless radio frequency unit; the matching circuit is respectively connected with the power amplifier and the low-noise amplifier; the power amplifier and the low-noise amplifier are respectively connected with the electronic switch.
3. The active RFID-based Internet of things electronic license plate device of claim 2, wherein: the active RFID module also comprises a communication interface and a JTAG interface; the communication interface is used for the active RFID module to communicate and connect with external data; the JTAG interface is used for program burning of the MCU processor, and the exterior of the JTAG interface is connected with the JTAG burner, so that program erasing, burning and online upgrading of the MCU processor are realized; the communication interface and the JTAG interface are respectively connected with the MCU processor.
4. The active RFID-based Internet of things electronic license plate device of claim 1, wherein: the device also comprises an interface module; the interface module comprises one or more of a video interface, a display interface and a data interface; the video interface is used for being connected with an external camera to acquire an external video; the display interface is used for being connected with external display equipment to display related data; the data interface is used for realizing data interaction between the electronic license plate and the external interface; the interface module is connected with the processor module.
5. The active RFID-based Internet of things electronic license plate device of claim 1, wherein: the device also comprises a display module; the display module is used for displaying related data; the display module is connected with the processor module.
6. The active RFID-based Internet of things electronic license plate device of claim 1, wherein: the power module includes a first DC-DC unit; the first DC-DC unit is used for voltage conversion and providing a proper working power supply.
7. The Internet of things electronic license plate device based on active RFID as claimed in claim 6, wherein: the power module also comprises a solar charging unit and a lithium battery; the solar charging unit is respectively connected with the processor module and the lithium battery; the lithium battery is connected with the first DC-DC unit.
8. An implementation method of an Internet of things electronic license plate device based on active RFID is characterized in that: the method comprises the following steps:
step 1, starting a system and initializing a device;
step 2, the processor module is connected with a 5G micro base station or an electronic license plate gateway through a 5G module to realize data communication with a traffic management system;
step 3, the processor module is communicated with a traffic management system to realize writing, reading and processing of the vehicle code information ID of the Internet of things electronic license plate, and the Internet of things electronic license plate obtains the globally unique vehicle code information ID to generate an electronic license plate identity;
step 4, the processor module is communicated with a traffic management system to realize the identification management of the electronic license plate, when the motor vehicle provided with the electronic license plate of the Internet of things drives into a radio frequency signal area provided with an electronic license plate gateway, the active RFID module receives the instruction sent by the electronic license plate gateway, analyzes the instruction and then sends the instruction to the processor module for response, the active RFID module transmits the vehicle coding information ID of the electronic license plate and related information to the electronic license plate gateway to realize non-contact identification, the electronic license plate of the Internet of things is identified by the electronic license plate gateway, the electronic license plate gateway acquires the vehicle information, the vehicle information is accessed to a traffic management system through a 5G micro base station communication link to verify the identity, and vehicle authentication management, vehicle traffic management, vehicle safety management and road planning management are carried out, writing the related information into a traffic management system for storage processing, and simultaneously performing related management and query by a traffic management department through the traffic management system; the vehicle owner accesses the traffic management system through the APP to perform account information query, violation information query and fee deduction information query;
step 5, the processor module is communicated with a traffic management system to realize vehicle position information management, and the Beidou module transmits the acquired position data to the traffic management system through the 5G module to perform related processing and analysis so as to realize vehicle positioning and navigation position service; the vehicle owner accesses the traffic management system through the APP to perform vehicle navigation position service;
step 6, the processor module communicates with the traffic management system to realize management of the motion state of the vehicle body, the acceleration sensor transmits the collected related data to the processor module for analysis and processing, the processor module is connected with external vehicle image equipment through a display interface to display the related data in real time to remind a driver to realize safe driving, and meanwhile, the related data is uploaded to the traffic management system to be subjected to related analysis and processing;
7, the processor module is communicated with a traffic management system to realize the detection and management of the obstacles in front of the vehicle body, the collision sensor transmits the collected related data to the processor module for analysis and processing, the processor module is connected with external vehicle image equipment through a display interface to display the related data in real time to remind a driver to realize safe driving, and meanwhile, the related data can be uploaded to the traffic management system to perform related analysis and processing;
step 8, the processor module communicates with a traffic management system to realize detection and management of the external environment temperature of the vehicle body, the temperature sensor transmits the acquired environment temperature data to the processor module for analysis and processing, the environment temperature data is connected with external vehicle image equipment through a display interface to display related data in real time, a driver is reminded to pay attention to cold protection and warm keeping, the opening state of an air conditioner in the vehicle is adjusted, and meanwhile, the related data can be uploaded to the traffic management system to be subjected to related analysis and processing;
9, the processor module is communicated with a traffic management system to realize behavior analysis and monitoring management of a driver, the OBD module is externally connected with an automobile ECU interface, the OBD module is internally connected with the processor module, the numerical values of various sensors of the automobile electric control system are converted into data in a UART format, the data are output to the processor module to be analyzed and processed, the processor module is connected with external automobile image equipment through a display interface to display related data in real time to remind a driver of paying attention to safe driving, and meanwhile, the related data can be uploaded to the traffic management system to be analyzed and processed;
step 10, the processor module communicates with a traffic management system to realize vehicle image monitoring management, the video interface is connected with an external camera to acquire an external video, the interior of the processor module is connected with the processor module to perform related processing and analysis of the acquired video, the processor module is connected with an external vehicle image device through the display interface to display related data in real time to remind a driver of paying attention to safe driving, and meanwhile, the related data can be uploaded to the traffic management system to perform related analysis and processing; by connecting an external camera, the external environment condition is monitored, and backing service, vehicle following early warning and lane departure early warning are realized; the driving behavior of a driver in the vehicle is monitored by connecting the camera in the vehicle, and the behavior data of the driver and the vehicle driving data are collected in real time by combining an OBD module, so that the behavior monitoring of the driver is realized, and the UBI fast claim settlement is realized;
step 11, the processor module is communicated with a traffic management system to realize the display management of the related data of the electronic license plate, and the display module receives the data transmitted by the processor module to display the related data;
12, the processor module is communicated with a traffic management system to realize the solar charging management of the electronic license plate, the solar charging module is externally connected with the solar panel, the interior of the solar charging module is connected with the lithium battery to charge and store energy for the lithium battery, and the processor module is connected to realize the charging management;
and step 13, finishing the whole working cycle, keeping the processor module in real-time communication with the traffic management system, repeating the step 4, and periodically working to realize the related application management of the electronic license plate device of the Internet of things.
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