CN115334094A - ETC portal frame and road side unit based vehicle dynamic tracking device and method - Google Patents
ETC portal frame and road side unit based vehicle dynamic tracking device and method Download PDFInfo
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- CN115334094A CN115334094A CN202210712755.9A CN202210712755A CN115334094A CN 115334094 A CN115334094 A CN 115334094A CN 202210712755 A CN202210712755 A CN 202210712755A CN 115334094 A CN115334094 A CN 115334094A
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Abstract
The invention discloses a dynamic vehicle tracking device and method based on an ETC portal frame and a roadside unit, wherein the dynamic vehicle tracking device comprises a portal frame detection system, an optical fiber data acquisition system, a roadside unit, an optical transceiver, an optical fiber link, a data exchange, a storage server and a dynamic highway hazardous chemical substance vehicle tracking system.
Description
Technical Field
The invention relates to the technical field of traffic safety, in particular to a vehicle dynamic tracking device and method based on an ETC portal frame and a roadside unit.
Background
In recent years, with the rapid development of economy in China, the construction pace of highways is continuously accelerated, the number of motor vehicles and drivers in China is rapidly increased, the management work of highways is increasingly heavy and complex, and new problems and challenges need to be continuously faced, wherein transportation of hazardous chemicals is always the key and difficult point of government regulation, and particularly, with the increasing requirements of the country on public safety management, the safety management of transportation of hazardous chemicals is highly concerned by the whole society due to the potential high risk. Particularly, in recent years, the economy of China is rapidly developed, the demand of the society for dangerous chemicals is rapidly increased, the types and the quantity of the dangerous chemicals transported by roads are continuously increased, and the dangerous properties of goods are more and more complicated. A great amount of dangerous chemicals which are inflammable, explosive, extremely toxic and severely corroded in road transportation form a potential danger source flowing one by one, so that the dynamic tracking of dangerous chemical vehicles in the expressway is particularly important.
Through the smooth development of national cancellation provincial toll station construction projects, an ETC portal system is completely installed on an operating highway in China, the system is built on the section along the highway and is arranged in a free flow mode, the ETC portal system is composed of upper and lower bidirectional portals which are arranged in a staggered mode in the opposite direction, and the ETC portal system is a special system and supporting facilities with functions of toll segmented charging, license plate image recognition and the like. At present, in the field of intelligent transportation, dangerous chemical vehicle inspection is mainly concentrated on the entrance and exit of a toll station, supervision and tracking of vehicles in the transportation process of a highway are less, emergency rescue after accidents mostly occur, and preventive guarantee means are lacked.
Disclosure of Invention
In order to solve the limitations and defects in the prior art, the invention provides a vehicle dynamic tracking device based on an ETC portal frame and a roadside unit, which comprises a portal frame detection system, an optical fiber data acquisition system, the roadside unit, an optical transceiver, an optical fiber link, a data exchange board, a storage server and a highway hazardous chemical substance vehicle dynamic tracking system, wherein the portal frame detection system is used for detecting the ETC portal frame and the roadside unit;
the portal detection system is arranged according to an original ETC portal system and comprises a high-definition vehicle identification system, and the high-definition vehicle identification system is used for identifying dangerous chemical vehicles passing through the ETC portal;
the optical fiber data acquisition system is arranged in the range of 10 meters in front of and behind the ETC portal frame, and is linked with the portal frame detection system and used for acquiring vehicle speed data, vehicle weight data and wheel base data;
the road side unit is arranged at a ramp and used for marking information of dangerous chemical vehicles entering a main line and leaving the main line;
the data switch is used for calculating, analyzing and integrating the acquired data and tracking the dynamic track of the hazardous chemical substance vehicle in real time;
the storage server is used for storing the data collected in real time and storing the data collected in real time in a targeted manner according to the identified event type;
the highway hazardous chemical substance vehicle dynamic tracking system is used for carrying out real-time intelligent monitoring and analysis on data acquired in real time, and carrying out early warning and timely disposal on abnormal operation conditions of the hazardous chemical substance vehicles.
Optionally, the portal detection system and the roadside unit are configured to collect license plate information and vehicle type information of a hazardous chemical substance vehicle by using a high-definition vehicle recognition system, and check the license plate information and the vehicle type information with a hazardous chemical substance vehicle database to determine identity information of the hazardous chemical substance vehicle;
the optical fiber data acquisition system is used for acquiring the speed parameter, the weight parameter and the wheel base parameter of the dangerous chemical substance vehicle in real time, utilizing the acquisition time point to correspond to the identity information of the dangerous chemical substance vehicle, checking the vehicle data by repeated measurement of a plurality of door frames, and carrying out safety assessment and prediction on the running state of the dangerous chemical substance vehicle;
the optical transceiver, the optical fiber link, the data switch and the storage server are used for transmitting and storing data acquired in real time;
the highway hazardous chemical substance vehicle dynamic tracking system is used for monitoring the real-time position and the running state of the hazardous chemical substance vehicle and timely confirming the abnormal hazardous chemical substance vehicle.
The invention provides a vehicle dynamic tracking method based on an ETC portal frame and a roadside unit, which uses the vehicle dynamic tracking device and comprises the following steps:
when the dangerous chemical substance vehicle runs on a main line of a highway and passes through a nearest ETC portal, triggering a high-definition vehicle identification system of a portal detection system, identifying a license plate and a vehicle type of the dangerous chemical substance vehicle by an embedded high-definition camera of the high-definition vehicle identification system, and confirming vehicle identity information of the dangerous chemical substance vehicle;
the optical fiber data acquisition system acquires strain information, position information and acquisition information formed by the hazardous chemical substance vehicle, calculates and analyzes the strain information, the position information and the acquisition information to obtain the running speed, the weight and the wheel base of the hazardous chemical substance vehicle, corresponds acquisition parameters with the hazardous chemical substance vehicle, and starts to perform targeted tracking monitoring on the hazardous chemical substance vehicle;
when the dangerous chemical substance vehicle runs on the highway main line, the running track of the dangerous chemical substance vehicle is obtained through detection acquisition and information confirmation of each gantry detection system along the way;
when the dangerous chemical vehicle drives away from the main line or enters the main line, a road side unit arranged at a ramp starts the high-definition vehicle identification system, and the high-definition vehicle identification system collects vehicle passing information and determines vehicle identity information, driving-in time and driving-away time of the dangerous chemical vehicle;
when the dangerous chemical substance vehicles run on tunnels and bridges between the door frames or outside toll stations, service areas and parking lots, corresponding tracking early warning systems are started to track and monitor the dangerous chemical substance vehicles, and normal operation of the dangerous chemical substance vehicles is ensured.
The invention has the following beneficial effects:
the invention provides a vehicle dynamic tracking device and a method based on an ETC portal frame and a roadside unit, wherein the vehicle dynamic tracking device comprises a portal frame detection system, an optical fiber data acquisition system, a roadside unit, an optical transceiver, an optical fiber link, a data exchange, a storage server and a highway hazardous chemical substance vehicle dynamic tracking system.
Drawings
Fig. 1 is a block diagram of a vehicle dynamic tracking device based on an ETC portal and a roadside unit according to an embodiment of the invention.
Fig. 2 is a layout diagram of a gantry detection system and an optical fiber data acquisition system according to an embodiment of the present invention.
Fig. 3 is a regional structure diagram of an optical fiber data acquisition system according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a roadside unit according to a first embodiment of the present invention.
Fig. 5 is a flowchart illustrating a method according to a second embodiment of the present invention.
Wherein the reference numerals are: a1, A2, A3, A4, B1, B2, B3 and B4 are portal detection systems, A1F, A2F, A F, A F, B1F, B2F, B F, B F is an optical fiber data acquisition region corresponding to each portal detection system, C1 and C2 are road side units, M is a hazardous chemical vehicle, P is a ramp connection region, M1 and M2 are embedded high-definition cameras, L1, L2 and L3 are sensing optical fibers, C11 is an embedded camera in a road test unit, and C12 is a data storage system in the road test unit.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the vehicle dynamic tracking apparatus and method based on the ETC portal and the roadside unit provided by the present invention are described in detail below with reference to the accompanying drawings.
Example one
To the problem that present highway danger article vehicle detection monitoring pursuit exists, this embodiment provides a vehicle dynamic tracking device based on ETC portal and roadside unit, utilize portal detecting system, optical data acquisition system and roadside unit, through carrying out real-time data acquisition and analysis to the danger article vehicle through ETC portal and roadside unit, can lock danger article vehicle, carry out real-time update to vehicle position information, can carry out preventive intervention to the abnormal conditions, reduce the accident rate, provide data support for the safe traffic construction.
Fig. 1 is a block diagram of a vehicle dynamic tracking device based on an ETC portal and a roadside unit according to an embodiment of the invention. As shown in fig. 1, the whole device mainly comprises a portal detection system, an optical fiber data acquisition system, a Road Side Unit (RSU), an optical transceiver, an optical fiber link, a data exchange, a storage server, and a dynamic tracking system for dangerous chemical vehicles on a highway. The portal detection system is mainly based on original ETC portal system and arranges, including high definition vehicle identification system, mainly carries out dangerization article vehicle identification to the vehicle through the ETC portal. The optical fiber data acquisition system is mainly arranged in the range of 10 meters in front of and behind the ETC portal and is linked with the portal detection system, so that the accurate acquisition of physical indexes such as vehicle speed, vehicle weight, wheel base and the like is realized. The Road Side Unit (RSU) is mainly arranged at a ramp and marks dangerous chemical vehicle information entering and exiting a main line. The optical transceiver and the transmission optical fiber are mainly used for transmitting the collected information; the data switch is mainly used for calculating, analyzing and integrating data acquired by each detection system and tracking the dynamic track of the dangerous chemical vehicle in real time; the storage server is mainly used for storing mass detection data and performing targeted storage on mass real-time data according to the type of the identification event; the dynamic tracking system for dangerous chemical vehicles on the expressway mainly carries out real-time intelligent monitoring and analysis on collected vehicle information, and early warns and disposes abnormal operation conditions in advance.
Fig. 2 is an apparatus layout diagram of a gantry detection system and an optical fiber data acquisition system according to an embodiment of the present invention. The system comprises a gantry detection system, an optical fiber data acquisition area, an embedded high-definition camera and sensing optical fibers, wherein A1 and B1 are the gantry detection system, A1F is the optical fiber data acquisition area corresponding to the gantry detection system, M1 and M2 are the embedded high-definition camera, and L1, L2 and L3 are the sensing optical fibers. A1 and B1 are ETC portal systems, and upper and lower bidirectional portals are arranged in a back-to-back staggered manner; A1F is an optical fiber data acquisition area corresponding to the A1 portal detection system, and the speed, the weight and the wheelbase of the vehicle running the hazardous chemical substance are obtained through calculation and analysis by utilizing strain values, acquisition time and acquisition positions acquired in real time; m1 and M2 are embedded high-definition cameras, are mainly used as core components of a high-definition vehicle identification system, and finish identification of license plate and vehicle type information of dangerous chemical vehicles through high-definition pictures and video information. The method comprises the steps of recognizing vehicle types, wherein a dangerous chemical substance transport vehicle characteristic data set of a road monitoring scene is collected through research, picture samples contained in the dangerous chemical substance transport vehicle characteristic data set contain rich vehicle dangerous chemical substance characteristics, and the captured dangerous chemical substance transport vehicle head pictures are recognized through the warning triangle and dangerous goods license plate characteristics by means of research and improvement of a deep learning model. D is ETC portal intelligent control cabinet, mainly include the demodulation system of the optical fiber sensing, data exchanger, low-voltage distribution facility, optical transmitter and receiver, mainly transmit the data gathered on the spot to the section monitoring center of the loop through the optical communication network; l1, L2, L3 are sensing optical fiber, wherein L1, L2 are the regional transmission real-time data of gathering of optic fibre data, and L3 is high definition vehicle identification system transmission real-time detection data.
Fig. 3 is a regional structure diagram of an optical fiber data acquisition system according to an embodiment of the present invention. Where L is the road width, L1, L2 are the data transmission fibers, and the right side is two examples. The A1F area is an optical fiber data acquisition area, the length of the optical fiber data acquisition area is 10m, a 12-by-12 optical fiber grating distribution array is arranged in the optical fiber data acquisition area, and the optical fiber grating distribution array is divided into two channels L1 and L2 which are connected with an optical fiber sensing demodulation system; before collection is started, the optical fiber collection system needs to be calibrated (standard vehicle weight, standard vehicle type, standard wheel base and standard vehicle speed) by using a standard vehicle, and a calibration mapping chart is drawn according to data obtained when the standard vehicle passes through a collection area.
When the length of the vehicle wheel base is less than 10m, taking the condition above the right side of fig. 3 as an example, when a vehicle passes through the detection area A1F, all tires can contact the fiber bragg grating acquisition matrix, and the vehicle wheel base L0 can be directly obtained; when the vehicle moves in the acquisition area A1F, the position change information and the data acquisition time difference can be obtained by using the data acquired twice, and the vehicle running speed can be measured; and the single tire contact point can act on 4 acquisition gratings, and the vehicle weight of the passing vehicle can be obtained through the comparison analysis of the acquired strain value, position information and time information and a calibration mapping chart.
When the length of the wheel base of the vehicle is greater than 10m, taking the lower condition at the right side of the figure 3 as an example, the running distance of the vehicle from the front wheel of the vehicle entering the detection device A1F to the front wheel of the vehicle leaving the detection device A1F is 10, and the running speed of the vehicle can be measured by using the data acquisition time difference; when the last wheel of the vehicle leaves the detection device A1F, the vehicle running distance is L0+10, and the vehicle wheelbase L0 can be obtained by utilizing the data acquisition time difference and the vehicle running speed; in the process of passing the vehicle, at least 4 parts of the single tire contact points act on the collected gratings, and the vehicle weight passing the vehicle can be obtained through comparison and analysis of collected strain values, position information and time information and a calibration mapping chart.
Fig. 4 is a schematic diagram of a roadside unit according to a first embodiment of the present invention. Wherein, C1 is a Road Side Unit (RSU), C11 is an embedded high-definition camera in a drive test unit, and C12 is a data storage system in the drive test unit and is transmitted to a road section monitoring center through an optical fiber transmission system. And C11 is an embedded high-definition camera in a drive test unit, is used as a core component of a high-definition vehicle identification system, and can be used for identifying license plates and vehicle types of dangerous chemical vehicles and confirming vehicle identity information. And C12 is a data storage system in a drive test unit, and transmits the acquired data to the road section monitoring center through an optical fiber transmission system.
The embodiment provides a vehicle dynamic tracking device and a method based on an ETC portal frame and a roadside unit, the vehicle dynamic tracking device comprises a portal frame detection system, an optical fiber data acquisition system, a roadside unit, an optical transceiver, an optical fiber link, a data exchange, a storage server and a highway hazardous chemical substance vehicle dynamic tracking system, compared with a traditional hazardous chemical substance vehicle monitoring means, the vehicle dynamic tracking device utilizes the mutual fusion of the portal frame detection system, the optical fiber data acquisition system and the roadside unit, license plate data, vehicle type data and axle distance data of the hazardous chemical substance vehicle are acquired through an ETC portal frame arranged on the whole highway network, vehicle identity information of the hazardous chemical substance vehicle is locked, meanwhile, the running state of the hazardous chemical substance vehicle is evaluated and analyzed according to real-time vehicle speed data and real-time vehicle weight data acquired by the optical fiber data acquisition system, the whole-process tracking and preventive intervention of the hazardous chemical substance vehicle are achieved, and the safety of the hazardous chemical substance vehicle is improved.
Example two
Fig. 5 is a flowchart illustrating a method according to a second embodiment of the present invention. The system comprises a main line, A1, A2, A3, A4, B1, B2, B3 and B4, wherein the main line is a portal system, the main line is an optical fiber data acquisition area corresponding to each portal system, the A1F, A2F, A3F, A F, B1F, B2F, B F, B F, the C1 and C2 are Road Side Units (RSUs) arranged at an entrance ramp, and the M is a dangerous chemical vehicle driving into a main line of a highway. The region P is a region connected to the ramp. A1-A4 and B1-B4 are ETC gantries, the upper and lower bidirectional gantries are arranged in a staggered mode in the back direction, and the gantry system is provided with a high-definition vehicle recognition system and can be used for recognizing license plates and vehicle types of dangerous chemical vehicles. The A1F-A4F and the B1F-B4F are optical fiber data acquisition areas corresponding to the portal systems, and the speed, the weight and the wheelbase of the vehicle running the hazardous chemical substance are obtained through calculation and analysis by using strain values, acquisition time and acquisition positions acquired in real time. And M is a dangerous chemical vehicle driving into a main line of the highway, and the dangerous chemical vehicle can be identified, marked and tracked and monitored after entering the highway. P is the area of connection to the ramp, which may be a toll booth, a service area, a parking area, etc.
If the region P is a toll station, the vehicles can detect the license plate and vehicle type information of the passing vehicles through Road Side Units (RSU) C1 and C2 arranged at the exit ramp and the entrance ramp, and whether the passing vehicles pass or not, and the passing vehicles and the vehicle information entering and leaving the toll station are checked and calibrated to determine the entering and leaving information of the dangerous chemical vehicle; according to the ramp length and the portal frame distance, the reasonable passing time T can be determined. If the vehicle does not pass through the toll station within the time T after the detection and the confirmation of the A2 and the C1, or if the vehicle passes through the toll station and the detection and the confirmation of the C2 and does not pass through the portal system A3 within the time T, the abnormal conditions (vehicle faults, road congestion, traffic accidents and the like) of the dangerous chemical vehicle are indicated, and the inspection and the confirmation need to be carried out through human intervention.
If the region P is a service region or a parking region, the vehicle can detect the license plate and the vehicle type information of the passing vehicle through Road Side Units (RSUs) C1 and C2 arranged at the exit ramp and the entrance ramp; according to the average stay time T, if the vehicle does not pass through C2 within the time T after the detection and confirmation of A2 and C1, the abnormal condition (vehicle fault and the like) of the dangerous chemical vehicle is shown, and the inspection and confirmation are required to be carried out by human intervention.
According to the distance between two adjacent portal systems and the vehicle speed detected in real time, the time T1 when the vehicle passes through the next portal system can be predicted for vehicles which do not enter the region P, when the vehicle does not reach the next portal system after (T1 x 120%) time, abnormal conditions (vehicle faults, road congestion, traffic accidents and the like) of dangerous chemical vehicles are shown, manual intervention is needed for checking and confirming, and the vehicles go to the region through patrol aircrafts or road administration vehicles to confirm specific conditions.
The embodiment provides a vehicle dynamic tracking method based on an ETC portal frame and a roadside unit, which uses the vehicle dynamic tracking device provided by the embodiment one and mainly comprises a portal frame detection system, an optical fiber data acquisition system, a roadside unit (RSU), an optical transceiver, an optical fiber link, a data exchange board, a storage server and a highway hazardous chemical substance vehicle dynamic tracking system, wherein the portal frame detection system is mainly arranged based on an original ETC portal frame system and comprises a high-definition vehicle identification system which is mainly used for identifying hazardous chemical substance vehicles of vehicles passing through the ETC portal frame; the optical fiber data acquisition system is mainly arranged in the range of 10 meters in front of and behind the ETC portal and is linked with the portal detection system, so that the accurate acquisition of physical indexes such as vehicle speed, vehicle weight, wheel base and the like is realized; the Road Side Unit (RSU) is mainly arranged at a ramp and marks dangerous chemical vehicle information entering and exiting a main line; the data switch is mainly used for calculating, analyzing and integrating data acquired by each detection system and tracking the dynamic track of the dangerous chemical vehicle in real time; the storage server is mainly used for storing mass detection data and performing targeted storage on a large amount of real-time data according to the type of the identification event; the highway hazardous chemical substance vehicle dynamic tracking system software mainly carries out real-time intelligent monitoring and analysis on the acquired vehicle information, and carries out early warning and disposal on abnormal operation conditions in advance.
The vehicle dynamic tracking device mainly comprises a portal detection system, an optical fiber data acquisition system, a Road Side Unit (RSU), an optical transceiver, an optical fiber link, a data switch, a storage server and a highway hazardous chemical vehicle dynamic tracking system. The system comprises a portal detection system, a Road Side Unit (RSU), a high-definition vehicle identification system, a dangerous chemical substance vehicle database and a detection vehicle identification system, wherein the portal detection system and the Road Side Unit (RSU) mainly utilize the high-definition vehicle identification system to collect license plate and vehicle type information of the dangerous chemical substance vehicle, and check is carried out on the license plate and the vehicle type information of the dangerous chemical substance vehicle and determine the identity information of the detection vehicle; the optical fiber data acquisition system is mainly used for acquiring parameters such as the speed, the weight and the wheel base of a running dangerous chemical vehicle in real time, and corresponding to the identity information of the vehicle by using an acquisition time point, and the repeated measurement of the multiple door frames can not only check the vehicle data, but also perform safety evaluation and prediction on the running state of the vehicle; the transmission and storage of the collected data are realized by the equipment such as an optical transmitter and receiver, an optical fiber link, a data exchanger, a storage server and the like; the expressway hazardous chemical substance vehicle dynamic tracking system software can monitor the real-time position and the running state of the hazardous chemical substance vehicle, timely confirms the abnormal hazardous chemical substance vehicle, and protects driving for safe traffic through preventive intervention.
The working flow of the ETC portal and roadside unit-based vehicle dynamic tracking method provided by the embodiment is as follows: the dynamic tracking device for the dangerous chemical vehicle mainly collects data of a license plate, a vehicle type, a vehicle speed, a vehicle weight and a wheel base of the dangerous chemical vehicle by means of a portal detection system, an optical fiber data collection system, a Road Side Unit (RSU) and the like. When a dangerous chemical vehicle runs on a main line of a highway and passes through a nearest ETC portal frame, a portal frame detection high-definition vehicle recognition system is triggered, and the system is based on an embedded high-definition camera and can be used for recognizing license plates and vehicle types of the dangerous chemical vehicle and confirming vehicle identity information; strain information, position information and acquisition information formed by the passing dangerous chemical substance vehicles can be acquired through an optical fiber data acquisition system, the running speed, the weight and the wheel base of the vehicles are obtained according to calculation and analysis, the acquisition parameters correspond to the dangerous chemical substance vehicles, and the targeted tracking monitoring is started; when the vehicle runs on the main line, the running track of the dangerous chemical vehicle can be obtained through detection acquisition and information confirmation of each portal along the way. When the dangerous chemical vehicle drives away or drives into the main line, a Road Side Unit (RSU) arranged at the ramp starts a high-definition vehicle identification system, collects vehicle passing information and determines the identity of the dangerous chemical vehicle and the driving-in and driving-away time; according to the abnormal conditions of tunnels, bridges and other possible scenes such as toll stations, service areas, parking lots and the like which are possibly encountered between main line driving gantries, corresponding tracking early warning programs are formulated, and the normal operation of dangerous chemical vehicles is ensured.
The embodiment provides a vehicle dynamic tracking method based on an ETC portal frame and a roadside unit, the vehicle dynamic tracking device comprises a portal frame detection system, an optical fiber data acquisition system, the roadside unit, an optical transceiver, an optical fiber link, a data exchange, a storage server and a highway hazardous chemical substance vehicle dynamic tracking system, compared with a traditional hazardous chemical substance vehicle monitoring means, the vehicle dynamic tracking device utilizes the portal frame detection system, the optical fiber data acquisition system and the roadside unit to be mutually fused, license plate data, vehicle type data and axle distance data of the hazardous chemical substance vehicle are acquired through an ETC portal frame arranged on the whole highway network, vehicle identity information of the hazardous chemical substance vehicle is locked, meanwhile, the running state of the hazardous chemical substance vehicle is evaluated and analyzed according to real-time vehicle speed data and real-time vehicle weight data acquired by the optical fiber data acquisition system, the whole-process tracking and preventive intervention of the hazardous chemical substance vehicle are achieved, and the safety of the hazardous chemical substance vehicle is improved.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (3)
1. A vehicle dynamic tracking device based on an ETC portal frame and a roadside unit is characterized by comprising a portal frame detection system, an optical fiber data acquisition system, the roadside unit, an optical transmitter and receiver, an optical fiber link, a data exchange, a storage server and a highway hazardous chemical substance vehicle dynamic tracking system;
the portal detection system is arranged according to an original ETC portal system and comprises a high-definition vehicle identification system, and the high-definition vehicle identification system is used for identifying dangerous chemical vehicles passing through the ETC portal;
the optical fiber data acquisition system is arranged in the range of 10 meters in front of and behind the ETC portal frame, and is linked with the portal frame detection system and used for acquiring vehicle speed data, vehicle weight data and wheel base data;
the roadside unit is arranged at the ramp and used for marking information of dangerous chemical vehicles driving into the main line and driving out of the main line;
the data switch is used for calculating, analyzing and integrating the acquired data and tracking the dynamic track of the hazardous chemical substance vehicle in real time;
the storage server is used for storing the data collected in real time and storing the data collected in real time in a targeted manner according to the identified event type;
the highway hazardous chemical substance vehicle dynamic tracking system is used for carrying out real-time intelligent monitoring and analysis on data acquired in real time, and carrying out early warning and timely disposal on abnormal operation conditions of the hazardous chemical substance vehicles.
2. The ETC portal frame and roadside unit based vehicle dynamic tracking device of claim 1, wherein the portal frame detection system and the roadside unit are used for collecting license plate information and vehicle type information of a hazardous chemical substance vehicle by using a high-definition vehicle recognition system, and determining identity information of the hazardous chemical substance vehicle through checking with a hazardous chemical substance vehicle database;
the optical fiber data acquisition system is used for acquiring the speed parameter, the weight parameter and the wheel base parameter of the dangerous chemical substance vehicle in real time, utilizing the acquisition time point to correspond to the identity information of the dangerous chemical substance vehicle, checking the vehicle data by repeated measurement of a plurality of door frames, and carrying out safety assessment and prediction on the running state of the dangerous chemical substance vehicle;
the optical transceiver, the optical fiber link, the data switch and the storage server are used for transmitting and storing data acquired in real time;
the highway hazardous chemical substance vehicle dynamic tracking system is used for monitoring the real-time position and the running state of the hazardous chemical substance vehicle and timely confirming the abnormal hazardous chemical substance vehicle.
3. A vehicle dynamic tracking method based on an ETC portal frame and a roadside unit, characterized in that the vehicle dynamic tracking method uses the vehicle dynamic tracking device of claim 1 or claim 2, and the vehicle dynamic tracking method comprises:
when the dangerous chemical substance vehicle runs on a main line of a highway and passes through a nearest ETC portal, triggering a high-definition vehicle identification system of a portal detection system, identifying a license plate and a vehicle type of the dangerous chemical substance vehicle by an embedded high-definition camera of the high-definition vehicle identification system, and confirming vehicle identity information of the dangerous chemical substance vehicle;
the optical fiber data acquisition system acquires strain information, position information and acquisition information formed by the hazardous chemical substance vehicle, calculates and analyzes the strain information, the position information and the acquisition information to obtain the running speed, the weight and the wheel base of the hazardous chemical substance vehicle, corresponds acquisition parameters with the hazardous chemical substance vehicle, and starts to perform targeted tracking monitoring on the hazardous chemical substance vehicle;
when the dangerous chemical substance vehicle runs on the highway main line, the running track of the dangerous chemical substance vehicle is obtained through detection acquisition and information confirmation of each gantry detection system along the way;
when the dangerous chemical substance vehicle drives away from the main line or drives into the main line, a road side unit arranged at a ramp starts the high-definition vehicle identification system, and the high-definition vehicle identification system collects vehicle passing information and determines the vehicle identity information, the driving-in time and the driving-away time of the dangerous chemical substance vehicle;
when the dangerous chemical substance vehicles run on tunnels and bridges between the door frames or when the dangerous chemical substance vehicles run on toll stations, service areas and parking lots outside ramps, corresponding tracking and early warning systems are started to track and monitor the dangerous chemical substance vehicles, and the normal operation of the dangerous chemical substance vehicles is ensured.
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| CN202210712755.9A CN115334094A (en) | 2022-06-22 | 2022-06-22 | ETC portal frame and road side unit based vehicle dynamic tracking device and method |
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| CN202210712755.9A Pending CN115334094A (en) | 2022-06-22 | 2022-06-22 | ETC portal frame and road side unit based vehicle dynamic tracking device and method |
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| CN (1) | CN115334094A (en) |
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