CN212229640U - Electronic license plate device based on active RFID technology - Google Patents
Electronic license plate device based on active RFID technology Download PDFInfo
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- CN212229640U CN212229640U CN202020924282.5U CN202020924282U CN212229640U CN 212229640 U CN212229640 U CN 212229640U CN 202020924282 U CN202020924282 U CN 202020924282U CN 212229640 U CN212229640 U CN 212229640U
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Abstract
The utility model relates to a wisdom traffic technical field, concretely relates to electron license plate device based on active RFID technique, including power module, processor module, active RFID module, EMC and ESD module, 5G module, SIM card module, big dipper module. The utility model discloses combine active RFID technique, 5G communication technology, big dipper technique, realize vehicle effective area's intelligent perception and location, thereby acquire vehicle relevant information, realize vehicle license integration management, charge management such as high speed, the traffic violation, the escape management, vehicle location tracking management etc., effectively replace ETC electronic tags and traditional license plate, involving city partial road and regional the charge that blocks up, the parking area charge, the traffic police fines, highway charge etc., furthest reduces the falsely use, embezzlement and imitation, improve traffic management's intellectuality.
Description
Technical Field
The utility model relates to a wisdom traffic technical field, concretely relates to electron license plate device based on active RFID technique.
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.
Disclosure of Invention
In order to solve the problem, the utility model provides an electronic license plate device based on active RFID technique, concrete technical scheme is as follows:
an electronic license plate device based on an active RFID technology comprises a power supply module, a processor module, an active RFID module, an EMC and ESD module, a 5G module, an SIM card module and a Beidou module; 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; the active RFID module is used for writing, reading and processing vehicle coded information ID and realizing non-contact identification with the electronic license plate recognizer; the EMC module and the ESD module are used for realizing circuit electromagnetic protection of the electronic license plate; the 5G module is used for transmitting the data of the electronic license plate; 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; the power module, the active RFID module, the EMC and ESD module, the 5G module, the SIM card module and the Beidou module 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 vehicle further comprises an acceleration sensor for detecting the motion state of the vehicle body; the acceleration sensor is connected with the processor module.
Preferably, the vehicle further comprises a collision sensor for detecting an obstacle in front of the vehicle body; the collision sensor is connected with the processor module.
Preferably, the automobile body temperature detection device further comprises a temperature sensor, wherein the temperature sensor is used for detecting the temperature of the environment outside the automobile body, and the temperature sensor is connected with the processor module.
Preferably, the vehicle monitoring system further comprises an OBD module, wherein the OBD module is used for collecting vehicle data, classifying and analyzing the collected data, and analyzing and monitoring the behavior of a driver; the OBD module is connected with the processor module.
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.
The utility model has the advantages that:
(1) the utility model discloses combine active RFID technique, 5G communication technology, big dipper technique, realize vehicle effective area's intelligent perception and location, thereby acquire vehicle relevant information, realize vehicle license integration management, charge management such as high speed, the traffic violation, the escape management, vehicle location tracking management etc., effectively replace ETC electronic tags and traditional license plate, involving city partial road and regional the charge that blocks up, the parking area charge, the traffic police fines, highway charge etc., furthest reduces the falsely use, embezzlement and imitation, improve traffic management's intellectuality.
(2) The utility model discloses an electronic license plate device combines relevant sensor, video monitoring, gathers vehicle data through the OBD module to classify the analysis to the data of gathering, realize driver's action analysis, control, realize UBI (driving action insurance) fast settlement claim etc. can let insurance enterprise share driving data, provide the reference foundation for insurance settlement claim and insurance rate.
Drawings
FIG. 1 is a schematic diagram of the present invention;
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 the present invention.
Detailed Description
For a better understanding of the present invention, the following further description is made in conjunction with the accompanying drawings and the specific embodiments:
as shown in fig. 1, an electronic license plate device based on active RFID technology is installed at a current license plate position, and includes a power module, a processor module, an active RFID module, an EMC and ESD module, a 5G module, a SIM card module, and a beidou module; 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; the active RFID module is used for writing, reading and processing vehicle coded information ID and realizing non-contact identification with the electronic license plate recognizer; the EMC module and the ESD module are used for realizing the circuit electromagnetic protection of the electronic license plate; the 5G module is used for transmitting the data of the electronic license plate; 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; the power module, the active RFID module, the EMC and ESD module, the 5G module, the SIM card module and the Beidou module 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 recognizer 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 recognizer, the vehicle code information ID and vehicle position information are transmitted to a traffic management system of a background traffic department 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 management. The electronic license plate recognizer is preferably an electronic license plate gateway, is installed on the roadside and at a road gate, and recognizes the electronic license plate information of passing vehicles.
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 for data communication and connection between the active RFID module and the outside, and the communication interface comprises an SPI interface, a USB interface and the like.
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 of a traffic department through a 5G micro base station or a 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 an electronic license plate, is connected with the ARM core processor, and transmits the collected position data to a traffic management system of a traffic department through the 5G module for relevant processing and analysis, so that high-precision positioning and navigation position services of vehicles 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.
The electronic license plate device further comprises an acceleration sensor, wherein 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, side turning and the like, 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 uploads the related data to a traffic management system of a traffic department for related analysis and processing.
The electronic license plate device further comprises a collision sensor, wherein 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 of a traffic department for related analysis and processing.
The electronic license plate device further comprises a temperature sensor, and the temperature sensor is used for detecting the external environment temperature of the vehicle body and reminding a driver of paying attention to cold protection and warm keeping. 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 of a traffic department for related analysis and processing.
As shown in fig. 6, the electronic license plate device further includes an OBD module, where the OBD module is used to collect vehicle data, classify and analyze the collected data, and implement behavior analysis and monitoring of a 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 of a traffic department for related analysis and processing.
The electronic license plate device also 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 perform related processing and analysis on the acquired 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 of a traffic department 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 electronic license plate device also 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 present invention is as follows:
and step 2, the ARM core process is connected with a 5G micro base station or an electronic license plate recognizer through a 5G module, and data communication with a traffic management system of a traffic department is realized.
And 3, communicating with a traffic management system of a traffic department by ARM core processing to realize writing, reading, processing and the like of the vehicle code information ID of the electronic license plate, and generating the identity of the electronic license plate by the electronic license plate acquiring the globally unique vehicle code information ID.
And 5, the ARM core process is communicated with a traffic management system of a traffic department to realize vehicle position information management, the Beidou module is connected with the ARM core processor, the collected position data is transmitted to the traffic management system of the traffic department through the 5G module to be subjected to relevant processing and analysis, and high-precision positioning and navigation position service of the vehicle is realized. The vehicle owner accesses a traffic management system of a traffic department through the APP to perform vehicle navigation position service.
And 6, communicating the ARM core process with a traffic management system of a traffic department to realize vehicle motion state management, connecting the acceleration sensor with the ARM core processor, transmitting the collected related data to the ARM core processor for analysis and processing, connecting an external vehicle image device through a display interface, displaying the related data in real time, reminding a driver to realize safe driving, and uploading the related data to the traffic management system of the traffic department for related analysis and processing.
And 7, communicating the ARM core processing with a traffic management system of a traffic department to realize detection and management of obstacles in front of the vehicle body, connecting a collision sensor with the ARM core processor, transmitting the acquired related data to the ARM core processor for analysis and processing, connecting an external vehicle image device through a display interface, displaying the related data in real time, reminding a driver to realize safe driving, and uploading the related data to the traffic management system of the traffic department for related analysis and processing.
And 8, communicating the ARM core processing with a traffic management system of a traffic department to realize detection and management of the external environment temperature of the vehicle body, connecting a temperature sensor with the ARM core processor, transmitting the acquired environment temperature data to the ARM core processor for analysis and processing, connecting an external vehicle image device through a display interface, displaying related data in real time, reminding a driver, paying attention to cold protection and heat preservation, adjusting the opening state of an air conditioner in the vehicle, and uploading the related data to the traffic management system of the traffic department for related analysis and processing.
And 9, ARM core processing is communicated with a traffic management system of a traffic department, behavior analysis and monitoring management of a driver are realized, the exterior of an OBD module is connected with an automobile ECU interface, the interior of the OBD module is connected with an ARM core processor, various sensor values of an automobile electric control system are converted into data in a UART format and output to the ARM core processor for analysis and processing, an external vehicle image device is connected through a display interface, relevant data are displayed in real time, the driver is reminded, safe driving is noticed, and meanwhile the relevant data can be uploaded to the traffic management system of the traffic department for relevant analysis and processing.
And step 10, the ARM core process is communicated with a traffic management system of a traffic department to realize vehicle image monitoring management, a video interface is connected with an external camera to acquire external video, the interior of the video interface is connected with the ARM core processor to perform relevant processing and analysis of the acquired video, an external vehicle image device is connected through a display interface to display relevant data in real time, a driver is reminded to pay attention to safe driving, and meanwhile the relevant data can be uploaded to the traffic management system of the traffic department to perform relevant 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.
And step 11, the ARM core processor communicates with a traffic management system of a traffic department to realize display management of the related data of the electronic license plate, and the display module is connected with the ARM core processor, receives the data transmitted by the ARM core processor and displays the related data through 7 sections of LED nixie tubes.
And 12, performing ARM core processing to communicate with a traffic management system of a traffic department to realize solar charging management of the electronic license plate, wherein the outside of a solar charging module is connected with a solar panel, the solar panel is arranged on the inner surface of the electronic license plate and is integrally arranged with the electronic license plate, an interface is reserved, an external mode can be adopted, the inside of the solar charging module is connected with a lithium battery through the interface, the lithium battery is charged and stored with energy, and the solar charging module is also connected with an ARM core processor to realize charging management.
And step 13, finishing the whole working cycle, keeping the communication between the ARM core processing and a traffic management system of a traffic department in real time, repeating the step 4, and periodically working to realize the related application management of the electronic license plate device.
The application of the active RFID technology brings new transitions in vehicle registration management, vehicle traffic management, vehicle toll management, etc., which are embodied as the following main aspects:
(1) vehicle registration management: the vehicle with the electronic license plate passes through the identification area of the electronic license plate recognizer to finish the 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 of a traffic department to find the authenticity, verify the inspection record (such as environmental protection detection, insurance purchase and the like), and the public security inquires illegal vehicles. The traffic monitoring based on vehicle identification is carried out, a traffic management mechanism based on an 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 reasonably match with other traffic information detection methods, 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 a traffic management system of a traffic department on micro and macro 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 is a requirement of traffic fine management, is a most effective technical means for traffic management such as relieving traffic jam, optimizing and managing vehicles, actively collecting traffic information and the like, 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.
The present invention is not limited to the above embodiments, but only to the preferred embodiments of the present invention, and the present invention should not be limited to the above embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An electronic license plate device based on active RFID technique which characterized in that: the system comprises a power module, a processor module, an active RFID module, an EMC and ESD module, a 5G module, an SIM card module and a Beidou module; 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; the active RFID module is used for writing, reading and processing vehicle coded information ID and realizing non-contact identification with the electronic license plate recognizer; the EMC module and the ESD module are used for realizing circuit electromagnetic protection of the electronic license plate; the 5G module is used for transmitting the data of the electronic license plate; 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; the power module, the active RFID module, the EMC and ESD module, the 5G module, the SIM card module and the Beidou module are respectively connected with the processor module.
2. The electronic license plate device based on the active RFID technology 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 electronic license plate device based on the active RFID technology of claim 1, wherein: the vehicle body control system further comprises an acceleration sensor, wherein the acceleration sensor is used for detecting the motion state of the vehicle body; the acceleration sensor is connected with the processor module.
4. The electronic license plate device based on the active RFID technology of claim 1, wherein: the vehicle body front obstacle detection device further comprises a collision sensor used for detecting an obstacle in front of the vehicle body; the collision sensor is connected with the processor module.
5. The electronic license plate device based on the active RFID technology of claim 1, wherein: still include temperature sensor, temperature sensor is used for detecting automobile body outside environment temperature, temperature sensor is connected with processor module.
6. The electronic license plate device based on the active RFID technology of claim 1, wherein: 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 OBD module is connected with the processor module.
7. The electronic license plate device based on the active RFID technology 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.
8. The electronic license plate device based on the active RFID technology 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.
9. The electronic license plate device based on the active RFID technology 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.
10. The electronic license plate device based on active RFID technology of claim 9, characterized in that: 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.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020924282.5U CN212229640U (en) | 2020-05-27 | 2020-05-27 | Electronic license plate device based on active RFID technology |
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| CN202020924282.5U CN212229640U (en) | 2020-05-27 | 2020-05-27 | Electronic license plate device based on active RFID technology |
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