CN217562132U - High-speed on-the-way vehicle detection system - Google Patents

Abstract

The application provides an expressway vehicle detection system which comprises a plurality of vehicle detection devices, a vehicle detection device and a vehicle monitoring device, wherein the vehicle detection devices are arranged on the way of an expressway and used for acquiring vehicle state information of vehicles; wherein the vehicle state information includes vehicle identification information and at least one of the number of axles of the vehicle and/or weight data of the vehicle; and the data processing platform is connected with the vehicle detection device and used for receiving the vehicle state information and judging whether the vehicle normally runs at a high speed on the way according to the vehicle state information. The high-speed on-the-way vehicle detection system has the advantages of being high in anti-interference capacity and recognition accuracy, can detect the axle number and the weight data of a vehicle on the way at a high speed, and can form vehicle state information of a whole path, so that whether the vehicle normally runs on the way at a high speed is judged, and effective judgment can be made on illegal behaviors such as 'parallel running', 'getting rid of and hanging up' and overrun and overload.

Description

High-speed on-the-way vehicle detection system

Technical Field

The application relates to the technical field of traffic control systems, in particular to a high-speed on-the-way vehicle detection system.

Background

With the cancellation of highway provincial toll stations and the change of high-speed toll collection modes in China, how to ensure that high-speed vehicles are accurate and error-free in paying and passing becomes an important work of a high-speed management unit. However, at present, the judgment of the vehicle type by the high-speed management Unit is still only dependent On the vehicle type detection of the high-speed entrance and exit, and the vehicle state in the vehicle driving process cannot be effectively monitored, and meanwhile, the existing Electronic Toll Collection (ETC) system directly calculates the vehicle passing fee according to the vehicle type in an On Board Unit (OBU), so that part of personnel and organizations use the detection leak of the existing charging mode to pay for the Toll Collection of the highway or illegally, and the operation management of the highway is adversely affected.

The problem of vehicle type change during current vehicle driving is mainly expressed as 'parallel operation' or 'get rid of hanging', that is, the freight train utilizes the separable mode of its locomotive and carriage to drive into high-speed service area in long-distance transport the locomotive, the carriage is separated to transport the carriage of other freight trains with the locomotive, reach and shorten the distance of paying fees, reduce the purpose of high-speed expense.

How to effectively identify the parallel operation or the swing and hang operation and the overload problem caused by the parallel operation, the method effectively plugs the leak of the existing vehicle type detection, and is a technical problem to be solved urgently to ensure the operation health of the expressway.

SUMMERY OF THE UTILITY MODEL

The application provides a high-speed on-the-way vehicle detection system, through set up vehicle detection device at a plurality of nodes of high-speed, the number of axles and the weight data of detectable vehicle to count the information of a plurality of nodes and summarize, form a full route vehicle state information, thereby judge whether the vehicle is normal driving on the way at high speed, in order to make effective judgement to violations such as "car combination" or "get rid of and hang".

In order to solve the above problems, the technical scheme provided by the application is as follows: a high speed in-transit vehicle detection system, comprising:

the system comprises a plurality of vehicle detection devices, a vehicle monitoring device and a vehicle monitoring device, wherein the vehicle detection devices are arranged on the way of a highway and used for acquiring vehicle state information of the vehicles; wherein the vehicle state information includes vehicle identification information and at least one of the number of axles of the vehicle and/or weight data of the vehicle;

and the data processing platform is connected with the vehicle detection device and used for receiving the vehicle state information and judging whether the vehicle normally runs at a high speed on the way according to the vehicle state information.

Compared with the existing vehicle type detection system, the high-speed on-the-way vehicle detection system has the advantages of strong anti-interference capability and high identification accuracy, and the additionally arranged vehicle detection device can be rolled by the tires of the vehicle to perform identification work, so that the condition of low identification rate or failure caused by rain and snow weather or foreign matter shielding does not exist; by arranging the vehicle detection devices at a plurality of high-speed nodes, the axle number and weight data of the vehicle can be detected at high speed on the way, and the vehicle state information of a whole path can be formed, so that whether the vehicle normally runs at high speed on the way can be judged, and the illegal behaviors such as 'parallel operation', 'throwing and hanging', overrun and overload can be effectively judged.

In one possible embodiment, a normally driving vehicle needs to satisfy at least one of the following requirements:

the number of axles in the plurality of pieces of vehicle state information corresponding to the vehicle is consistent;

and the difference value of the weight data in any two pieces of vehicle state information corresponding to the vehicle is not more than a preset threshold value.

In one possible embodiment, the vehicle detection device includes:

at least one group of road sensors, wherein each group of road sensors is arranged in a lane, and vehicle state information when the vehicle passes through is acquired through the road sensors;

the first terminal controller is connected with the road surface sensor and is used for determining the axle number and/or weight data of the vehicle according to the vehicle state information and sending the data;

the road side unit is used for acquiring the vehicle identification information from a vehicle-mounted electronic passing medium of the vehicle;

and the second terminal controller is connected with the data processing platform, the road side unit and the first terminal controller, and is used for acquiring the vehicle identification information and the number of axles and/or the weight data of the vehicle from an electronic passing medium of the vehicle, generating the vehicle state information according to the number of axles and/or the weight data of the vehicle and the vehicle identification information, and sending the vehicle state information to the data processing platform.

In one possible design, the road sensor includes any one of a strip sensor, a vibration sensor, a piezoelectric film sensor, a quartz-type sensor, a flat-plate sensor, and a bent-plate sensor.

In one possible embodiment, the vehicle detection device further includes a license plate recognition device;

the road side unit acquires first license plate information from a vehicle-mounted electronic passing medium of the vehicle;

the license plate recognition device is connected with the second terminal controller, arranged on the expressway, and used for snapshotting the vehicle, acquiring a snapshotted image, recognizing second license plate information of the vehicle according to the snapshotted image, and sending the second license plate information to the second terminal controller;

and the second terminal controller judges whether the vehicle is a target vehicle according to the first license plate information and the second license plate information.

In one possible design, the high-speed on-the-road vehicle detection system further includes:

the license plate recognition device and the road side unit are installed on the door frame.

In one possible design, the high-speed on-the-road vehicle detection system further includes:

and the information prompting device is connected with the data processing platform and is used for sending out abnormal prompting information when judging that the vehicle has abnormal driving behaviors in the high-speed way.

In one possible design, the high-speed on-the-road vehicle detection system further includes:

and the storage module is connected with the data processing platform and is used for respectively storing the axle number and the weight data corresponding to each vehicle.

In one possible embodiment, the vehicle detection device further includes:

and the ground induction coil is laid in the road surface of the expressway and is connected with the first terminal controller.

In a possible design manner, the first terminal controller and the second terminal controller may both adopt any one of a single chip microcomputer, an FPGA chip, or a DSP chip.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present application, and those skilled in the art can obtain other drawings based on the drawings without inventive labor.

FIG. 1 is a schematic diagram illustrating operation of a high speed in-transit vehicle detection system provided by an embodiment;

FIG. 2 is a schematic diagram of the connection of a high-speed on-the-road vehicle detection system provided by an embodiment.

Reference numerals are as follows: 10. a vehicle detection device; 11. a road surface sensor; 12. a first terminal controller; 20. A data processing platform; 30. a road side unit; 40. a license plate recognition device; 50. a second terminal controller; 60. A gantry; 70. an information presentation device; 80. a storage module; 90. a ground induction coil; 200. a vehicle; 201. vehicle-mounted electronic traffic medium.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description of the present application, it is to be understood that the terms "inner," "outer," "upper," "bottom," "front," "back," and the like, if any, refer to the orientation or positional relationship shown in FIG. 1, which is used for ease of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

It should be noted that the same reference numerals are used to denote the same components or parts in the embodiments of the present application, and for the same parts in the embodiments of the present application, only one of the parts or parts may be given the reference numeral, and it should be understood that the reference numerals are also applicable to the other same parts or parts.

At present, there are two charging modes on the highway, one is a Manual Ton Collection system (MTC) mode, and the other is an electronic toll Collection mode, i.e. an ETC mode, wherein the ETC mode is a main application mode of the highway at present.

The ETC mode is that the microwave special short-range communication between the electronic tag installed on the vehicle windshield and the road side unit on the ETC lane of the toll station is used, and the computer networking technology and the bank are used for carrying out background settlement processing, so that the purpose that the vehicle can pay the road and bridge fees through the road and bridge toll station without parking is achieved.

The existing ETC mode directly calculates the vehicle toll according to the vehicle type in the electronic tag, and part of people and organizations are led to use the detection loophole of the existing toll collection mode to pay the toll of the expressway without payment or illegal use, for example: the truck train separates the head from the carriage after entering the high-speed service area in a mode that the head and the carriage can be separated in long-distance transportation, and the head is used for transporting carriages of other truck trains, so that the purposes of shortening the payment distance and reducing the high-speed cost are achieved.

In order to solve the problems, the application provides a high-speed on-the-way vehicle detection system, and vehicle detection devices are arranged at a plurality of high-speed nodes, so that the number of axles and weight data of a vehicle can be detected, information of the nodes is counted and summarized to form full-path vehicle state information, whether the vehicle is normally driven on the high-speed on the way is judged, and violation behaviors such as 'vehicle combination', 'getting off and hanging up' and overload are effectively judged.

Specifically, as shown in fig. 1 and fig. 2, the present embodiment provides a high-speed on-the-road vehicle 200 detection system, which includes a plurality of vehicle detection devices 10 and a data processing platform 20.

A plurality of vehicle detection devices 10 provided on the way of a highway and configured to acquire vehicle state information of the vehicle 200; wherein the vehicle state information includes vehicle identification information and at least one of the number of axles of the vehicle 200 and/or weight data of the vehicle 200.

And the data processing platform 20 is connected with the vehicle detection device 10 and used for receiving the vehicle state information and judging whether the vehicle 200 normally runs at a high speed on the way according to the vehicle state information.

The working principle of the vehicle detection device 10 is as follows: the vehicle detection device 10 is laid on a road surface, and the vehicle detection device 10 can obtain the number of times of pressure application, the pressure application position, the pressure application time and the like after being rolled by the tires of the vehicle 80, and then obtains data information such as the number of axles, the wheel base, the weight and the like through calculation. For the same vehicle which normally runs, the number of axles measured in the high-speed process is unchanged, and the weight is almost unchanged (considering the influence of measurement precision, the quality measurement result has difference), so that whether the vehicle has illegal behaviors such as passing, throwing, overload and the like in the high-speed process can be judged through the number of axles and the weight data.

It should be noted that, when the data processing platform 20 determines whether the vehicle 200 is running normally, at least one of the following needs to be satisfied:

the number of axles in the plurality of pieces of vehicle state information corresponding to the vehicle 200 is identical;

the difference value of the weight data in any two pieces of vehicle state information corresponding to the vehicle 200 is not greater than the preset threshold value.

The axle number detection of the vehicle 200 is carried out at a plurality of nodes of the highway, all the axle number information is gathered and compared, and if the axle numbers are always consistent, the vehicle is judged to be in a normal running state in no behaviors such as 'parallel running' and 'throwing hanging' on the way at a high speed.

When the weights of the vehicles 200 are detected at a plurality of nodes of the expressway, the weight data cannot be completely consistent due to certain measurement errors of the weight measuring equipment, the weight difference within a certain range is allowed, and the difference is a preset threshold value. Therefore, the difference value of the weight data in any two pieces of vehicle state information is not larger than the preset threshold value, namely the system judges that the vehicle is always in a normal driving state.

Compared with the existing vehicle type detection system, the high-speed on-the-way vehicle 200 detection system in the embodiment has the advantages of strong anti-interference capability and high identification accuracy, the additionally arranged vehicle detection device 10 can be rolled by the tires of the vehicle 200 to carry out identification work, and the condition of low identification rate or failure caused by rain and snow weather or foreign matter shielding does not exist; by providing the vehicle detection device 10 at a plurality of high-speed nodes, the number of axles and weight data of the vehicle 200 can be detected at high speed on the way, and vehicle state information of one full route can be formed, so that whether the vehicle 200 is running normally at high speed on the way can be determined, and violations such as "parallel running", "drop-off hanging", and overrun overload can be effectively determined.

As shown in fig. 2, in one embodiment, the vehicle detection device 10 includes:

at least one set of road sensors 11, each set of road sensors 11 being disposed in one lane, and vehicle state information when the vehicle 200 passes by is acquired by the road sensors 11.

The first terminal controller 12 is connected with the road surface sensor 11 and used for determining and sending the axle number and/or weight data of the vehicle according to the vehicle state information;

the road side unit 30 is used for acquiring the vehicle identification information from the vehicle-mounted electronic passing medium of the vehicle;

and the second terminal controller 50 is connected with the data processing platform 20, the roadside unit 30 and the road surface sensor 11, and is configured to acquire the vehicle identification information and the number of axles and/or weight data of the vehicle from the electronic passing medium of the vehicle, generate vehicle state information according to the number of axles and/or weight data of the vehicle 200 and the vehicle identification information, and send the vehicle state information to the data processing platform 20. It is understood that the vehicle information should also include identification information of the vehicle, such as license plate number, electronic identification, etc., so that the data processing platform can store the status information of different vehicles respectively and further analyze the driving behavior.

Preferably, the road surface sensor 11 is laid along the width direction of the road surface of the expressway, and covers the width direction of the expressway entirely, and when the vehicle presses the road surface sensor 11, a pressure signal is obtained by the road surface sensor 11 and sent to the first terminal controller, so that the first terminal controller determines information such as weight data, number of axles, and the like of the vehicle based on the pressure information.

Moreover, the pavement sensor 11 is laid along the width direction of the expressway, and the width direction of the expressway is fully covered, so that the pavement of the expressway is free of the identification blind spot of the pavement sensor 11, the pavement sensor 11 is inevitably rolled during the driving process of the vehicle 200, and the effective judgment can be made when the vehicle 200 changes lanes or runs abnormally.

The detection system of the vehicle 200 in the embodiment can make an effective judgment when the vehicle 200 crosses the lane or runs abnormally, because the pavement sensor 11 is laid along the width direction of the expressway and fully covers the width direction of the expressway, the identification blind spot of the pavement sensor 11 is not arranged on the pavement of the expressway, the vehicle 200 is inevitably rolled to the pavement sensor 11 in the running process, and the applicability to the abnormal running state such as lane changing of the vehicle 200 is strong.

In one embodiment, the road surface sensor 11 includes any one of a strip sensor, a vibration sensor, a piezoelectric film sensor, a quartz-type sensor, a plate-type sensor, and a bent plate-type sensor.

The strip sensor uses whole alloy steel plate as elastomer, and the frame and the sensor are fixed and sealed into a whole. When the wheel passes by, the strain gauge senses the dynamic strain, and the wheatstone bridge generates an electric signal which is processed to obtain the axle weight of the vehicle 200. The application field is as follows: the overload detection system is applied to an overrun overload detection system, and detects information such as wheel weight, axle weight and total weight of the passing vehicle 200; the traffic condition investigation system is applied to the traffic condition investigation system, and can realize the functions of automatic motor vehicle classification, flow statistics, vehicle speed detection and the like.

The vibration sensor receives the mechanical quantity and converts the mechanical quantity into electric quantity proportional to the mechanical quantity. In the embodiment, the vibration generated by the tires of the vehicle 200 in the rolling process is converted into an electric signal to be sent to the first terminal controller 12 for calculating the number of axles, the wheelbase and the weight.

The principle of the piezoelectric film sensor is as follows: when a piece of piezoelectric polyvinylidene fluoride polymer film (piezoelectric film) is stretched or bent, an electric signal (charge or voltage) is generated between the surfaces of the upper electrode and the lower electrode of the film and is proportional to the stretching or bending deformation. In this embodiment, the pressure generated during the tire rolling process of the vehicle 200 is converted into an electrical signal to be sent to the first terminal controller 12 for calculating the number of axles, the wheelbase and the weight.

The piezoelectric quartz weighing sensor is a device which converts a weight signal into an electric signal by utilizing the longitudinal piezoelectric effect of a quartz crystal. The quartz sensor has extremely small temperature drift, can be used for weighing at low speed and high speed, has relatively stable physical characteristics, and has small change of sensitivity with time. Compared with other sensors, the following advantages are achieved: the range is wide, the structure is compact, the volume is small, and the weight is light; the sensitivity is high, the measured value can reach hundreds of tons of load, and the dynamic force as small as several kilograms can be distinguished.

The bending plate type sensor adopts an integral steel plate as an elastic body, a fastening boundary condition is established through two back beam supports, when a wheel passes through an effective table surface of the weighing platform, the strain gauge adhered to a strain area senses dynamic strain, a Wheatstone bridge formed by the strain gauge senses electric signals proportional to the load of the wheel, and the electric signals are subjected to high-speed sampling, processing and calculation by a special instrument to obtain the axle weight and the whole vehicle weight of the vehicle 200 running on the bending plate type sensor.

As shown in fig. 1 and fig. 2, in an embodiment, the vehicle detection apparatus further includes a license plate recognition apparatus 40.

The road side unit 30 acquires first license plate information from the vehicle-mounted electronic passing medium 201 of the vehicle 200;

the license plate recognition device 40 is connected with the second terminal controller 50, is arranged on the expressway, and is used for capturing the vehicle 200, acquiring a captured image, recognizing second license plate information of the vehicle 200 according to the captured image, and sending the second license plate information to the second terminal controller 50;

the second terminal controller 50 determines whether the vehicle 200 is the target vehicle 200 based on the first license plate information and the second license plate information.

The roadside unit 30 is disposed on the expressway, and is configured to read vehicle basic information in the vehicle-mounted electronic passing medium 201 and locate the position of the vehicle 200 on the expressway. The vehicle-mounted electronic passing medium 201 is installed on the vehicle 200 to be detected, and vehicle basic information of the vehicle 200 is prestored.

In this embodiment, the vehicle basic information mainly includes vehicle type information, license plate information, an electronic identifier, and the like, and the license plate information is mainly acquired, and the license plate information in the vehicle-mounted electronic passing medium 201 is defined as first license plate information.

The license plate recognition device 40 is disposed on the expressway, and is configured to capture the vehicle 200 and recognize the second license plate information based on the captured image. In this embodiment, the license plate recognition device 40 may be a camera, and the camera captures a head image of the vehicle 200, and recognizes the license plate information of the vehicle 200 based on the captured head image, and defines the license plate information recognized by the license plate recognition device 40 as the second license plate information. In other embodiments, the license plate recognition device 40 may also be used to capture a tail image of the vehicle, and obtain the second license plate information based on the captured tail image, which is not described herein again.

Further, the second terminal controller determines whether the vehicle 200 is a target vehicle according to the first license plate information and the second license plate information to improve the accuracy of vehicle identification while preventing a wrong matching of the weight data and the number of axles with the vehicle identification. In the high-speed on-the-way vehicle detection system in the embodiment, the ETC system at the high-speed upper exit can share some equipment, such as a road side unit, a license plate recognition device and the like, so as to reduce the cost.

It should be noted that, data transmission between the road surface sensor 11 and the first terminal controller 12, between the first terminal controller 12 and the data processing platform 20, and between the second terminal controller 50 and the data processing platform 20 belong to common data transmission technologies in the prior art, and wired or wireless communication may be used, as needed, a dedicated wired or local area network wireless communication may be used, or a common 4G or 5G wireless communication network may be used for real-time communication, so as to transmit the state of the equipment, issue a control instruction, feed back an execution result, and the like in real time. The license plate recognition device 40 recognizes the second license plate information of the vehicle 200, which is also implemented by the existing software method, such as a function of identifying a picture and finding objects of a treasure, and a function of extracting characters in a picture of WeChat.

Optionally, the onboard electronic transit medium 201 includes an onboard unit or a highway composite transit card.

The on-board unit, i.e., the OBU, is a microwave device that communicates with the roadside unit 30 using Dedicated Short Range Communication (DSRC) technology. In the ETC system, OBUs are mounted on a vehicle, and roadside units 30 are installed on the roadside to communicate with each other by microwaves. When the vehicle 200 passes through the road side unit 30 at a high speed, the OBU and the road side unit 30 are in microwave communication, just like a non-contact card, the distance is as far as more than ten meters, the frequency is as high as 5.8GHz, and when the vehicle passes through the road side unit, the vehicle type is identified, the rate is calculated, and the toll is deducted.

The Compound Pass Card (CPC) for the highway can identify the information of the vehicle 200 entering and leaving the toll station, accurately record the actual running path of the vehicle 200, and provide important basis for charging and clearing the cross-provincial toll.

Optionally, the roadside unit 30 is a phased array antenna system. A phased array antenna system is an antenna that changes the shape of a pattern by controlling the feeding phase of a radiating element in an array antenna. The control phase can change the direction of the maximum value of the antenna pattern so as to achieve the purpose of beam scanning.

Optionally, the license plate recognition device 40 includes a snapshot camera and/or a panoramic camera.

The induction coils are laid on the rear side road surfaces of the snapshot camera and the panoramic camera, and when the tire pressure of the vehicle 200 exceeds the induction coils on the ground, the snapshot camera and the panoramic camera start to shoot the photos of the vehicle 200.

With continued reference to FIG. 1, in one embodiment, the system for detecting a vehicle 200 in transit at high speed further comprises: the gantry 60, the license plate recognition device 40, and the roadside unit 30 are mounted on the gantry 60.

Alternatively, the license plate recognition device 40 may be erected on one side of the road through a mounting bracket, or may be erected above the road surface through a portal 60. Preferably, in order to make the license plate recognition device 40 have a better shooting angle so as to facilitate the data processing platform 20 to recognize the picture, the license plate recognition device 40 is fixed above the road surface through the door frame 60.

Alternatively, the roadside unit 30 may be erected on the side of the road by a mounting frame, or over the road surface by a gantry 60. Preferably, in order to enable the roadside unit 30 to better read the vehicle-mounted electronic passing medium 201, the roadside unit 30 is fixed above the road surface by the gantry 60.

As shown in fig. 2, in an embodiment, the system for detecting a vehicle 200 at a high speed on the way further includes an information prompt device 70, where the information prompt device 70 is connected to the data processing platform 20 and is used to send out an abnormal prompt message when the data processing platform 20 determines that the vehicle 200 has an abnormal driving behavior on the way at a high speed, so as to perform manual review in time. In specific implementation, the information prompting device 70 may be an information board, and may further be provided with a buzzer, a warning light, etc. to remind the operator that there is an abnormal condition in the vehicle.

As shown in fig. 2, in one embodiment, the system for detecting vehicles 200 on the way at high speed further includes a storage module 80, and the storage module 80 is connected to the data processing platform 20 and respectively stores the vehicle identification information, the number of axles and the weight data corresponding to each vehicle 200. The data information of the vehicle 200 is stored through the storage module, so that a piece of full-path vehicle state information is formed, whether the vehicle normally runs in a high-speed way or not is judged, and the illegal behaviors such as 'parallel operation' or 'hanging-off' are effectively judged.

As shown in fig. 1 and 2, in one embodiment, the vehicle detection device further includes a ground induction coil 90, and the ground induction coil 90 is laid in a road surface of the expressway and connected to the second terminal controller 50.

The ground induction coil 90 is laid on the rear side road surface of the license plate recognition device 40, when the tire pressure of the vehicle 200 exceeds the ground induction coil 90 on the ground, the ground induction coil 90 is triggered to generate a vehicle separation signal, and the second terminal controller performs vehicle separation according to the vehicle separation signal.

Optionally, the ground induction coil 90 may be replaced by a grating sensor, and after the vehicle 200 completely passes through the grating sensor, the grating sensor is triggered to generate a vehicle separation signal, so that the second terminal controller performs vehicle separation according to the vehicle separation signal.

In one embodiment, the first terminal controller 12 and the second terminal controller 50 may be any one of a single chip, an FPGA chip, or a DSP chip.

The single chip computer is a small and perfect microcomputer system formed by integrating the functions of a central processing unit CPU with data processing capacity, a random access memory RAM, a read only memory ROM, various I/O ports, an interrupt system, a timer/counter and the like on a silicon chip by adopting a super large scale integrated circuit technology.

An FPGA (Field-Programmable Gate Array), which is a product of further development based on Programmable devices such as PAL, GAL, CPLD, etc. The circuit is a semi-custom circuit in the field of Application Specific Integrated Circuits (ASICs), not only solves the defects of custom circuits, but also overcomes the defect that the number of gate circuits of the original programmable device is limited.

A DSP (Digital Signal Processing) refers to a Digital Signal Processing technology, and a DSP chip refers to a chip capable of implementing a Digital Signal Processing technology. The DSP chip adopts a Harvard structure with separated programs and data, is provided with a special hardware multiplier, widely adopts pipeline operation, provides special DSP instructions, and can be used for quickly realizing various digital signal processing algorithms.

In addition, the first terminal controller 12 and the second terminal controller 50 may be any one of a single chip microcomputer, an FPGA chip, and a DSP chip.

In the high-speed on-the-way vehicle 200 detection system, the road side unit 30 arranged above the high-speed on-the-way vehicle is used for acquiring license plate information; when the vehicle enters the image acquisition area, acquiring the license plate number of the vehicle 200 through a license plate recognition device; a single-row narrow strip sensor of a full-paved lane is adopted below the portal frame 60, and information such as the number of shafts and the weight of the vehicle 200 is acquired based on vehicle state information acquired by the narrow strip sensor; and the information of the number of the bound axles, the weight and the like and the vehicle state after the vehicle identification information are newly sent to the data processing platform, the data processing platform judges whether the vehicle normally runs at a high speed on the way based on the vehicle state data at multiple nodes, so that the violation behaviors of 'parallel operation' or 'hanging-off' and the like are effectively judged, and the running behavior of the vehicle 200 on the highway is effectively monitored.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A high speed in-transit vehicle detection system, comprising:

the vehicle detection devices are respectively arranged at different nodes on the way of the expressway and used for acquiring the vehicle state information of the vehicle; wherein the vehicle state information includes vehicle identification information and at least one of the number of axles of the vehicle and/or weight data of the vehicle; wherein the vehicle detection device includes a road surface sensor disposed in a vehicle road surface;

and the data processing platform is connected with the vehicle detection device and used for receiving the vehicle state information and judging whether the vehicle normally runs at a high speed on the way according to the vehicle state information.

2. The high-speed en-route vehicle detection system of claim 1, wherein a normally-running vehicle needs to meet at least one of:

the number of axles in the plurality of pieces of vehicle state information corresponding to the vehicle is consistent;

and the difference value of the weight data in any two pieces of vehicle state information corresponding to the vehicle is not greater than a preset threshold value.

3. The high-speed on-the-road vehicle detection system according to claim 1, wherein the vehicle detection device comprises:

the first terminal controller is connected with the road surface sensor and used for determining and sending the axle number and/or weight data of the vehicle according to the vehicle state information;

the road side unit is used for acquiring the vehicle identification information from a vehicle-mounted electronic passing medium of the vehicle;

and the second terminal controller is respectively connected with the data processing platform, the road side unit and the first terminal controller, and is used for acquiring the vehicle identification information and the number of axles and/or weight data of the vehicle from an electronic passing medium of the vehicle, generating the vehicle state information according to the number of axles and/or weight data of the vehicle and the vehicle identification information, and sending the vehicle state information to the data processing platform.

4. The high-speed in-transit vehicle detection system of claim 3, wherein the road surface sensor comprises any one of a strip sensor, a vibration sensor, a piezo film sensor, a quartz-type sensor, a plate-type sensor, and a bent plate-type sensor.

5. The high-speed en-route vehicle detection system of claim 3, wherein the vehicle detection device further comprises a license plate recognition device;

the road side unit acquires first license plate information from a vehicle-mounted electronic passing medium of the vehicle;

the license plate recognition device is connected with the second terminal controller, arranged on the expressway, and used for snapshotting the vehicle, acquiring a snapshotted image, recognizing second license plate information of the vehicle according to the snapshotted image, and sending the second license plate information to the second terminal controller;

and the second terminal controller judges whether the vehicle is a target vehicle according to the first license plate information and the second license plate information.

6. The high-speed en-route vehicle detection system of claim 5, further comprising:

the license plate recognition device and the road side unit are installed on the door frame.

7. The high-speed en-route vehicle detection system of claim 1, further comprising:

and the information prompting device is connected with the data processing platform and is used for sending out abnormal prompting information when the data processing platform judges that the vehicle has abnormal driving behaviors in the high-speed way.

8. The high-speed on-the-road vehicle detection system of claim 1, further comprising:

and the storage module is connected with the data processing platform and respectively stores the axle number and weight data corresponding to each vehicle.

9. The high-speed in-transit vehicle detection system of claim 3, wherein the vehicle detection device further comprises:

and the ground induction coil is paved in the road surface of the expressway and is connected with the first terminal controller.

10. The high-speed on-road vehicle detection system according to claim 3, wherein the first terminal controller and the second terminal controller can be any one of a single chip microcomputer, an FPGA chip or a DSP chip.

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