CN210244630U

CN210244630U - Interval speed measuring system for expressway

Info

Publication number: CN210244630U
Application number: CN201920604361.5U
Authority: CN
Inventors: Guanghui Chen; 陈广辉; Lin Gao; 高林; Jiang Luo; 罗江; Xiaoliu Yang; 杨小柳; Min Huang; 黄敏; Xinguan Wang; 王新官
Original assignee: Jiangxi Fang Xing Science & Technology Co ltd
Current assignee: Jiangxi Fang Xing Science & Technology Co ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-04-03
Anticipated expiration: 2029-04-29

Abstract

The utility model provides an interval speed measuring system of highway, it includes cloud ware, roadside unit, the control unit and communication unit, the control unit with the roadside unit communication unit connects, communication unit still with the cloud ware is connected. The utility model discloses can carry out speed detection to the vehicle under abominable meteorological environment, illumination environment, not receive the influence that the license plate sheltered from simultaneously, in addition, the utility model discloses the vehicle that has utilized entering highway possesses this characteristic of on-vehicle OBU or CPC card, carries out equipment compatibility with the vehicle charge function for highway electromechanical engineering project cost greatly reduced.

Description

Interval speed measuring system for expressway

Technical Field

The utility model relates to an equipment field for the highway, concretely relates to interval speed measuring system of highway.

Background

With the increasing automobile holding capacity in China, the traffic volume of highways is increasing day by day. However, highway accidents occur frequently, and one of the main reasons for the accidents is that the running vehicles overspeed. Therefore, it is necessary to monitor the speed of the running vehicle and penalize the speeding vehicle in order to control the running speed of the vehicle on the highway. A point speed measuring method and a video-based interval speed measuring method are commonly used for a highway speed measuring method. Due to the characteristic of wide range of the highway, the range limitation of the point speed measurement method is particularly prominent, and the requirement of highway speed measurement cannot be completely met.

The invention patent application with the application number of 201610965122.3 discloses a method for measuring speed in an expressway area, a system for implementing the method comprises a monitoring cloud platform and a plurality of monitoring cameras arranged at equal intervals in the speed measuring area, a virtual electronic fence module is arranged in each camera, when a vehicle enters a virtual electronic fence area and exits the virtual electronic fence area, the time of the vehicle entering and exiting is recorded, and then the average speed of the vehicle passing through two adjacent monitoring cameras is calculated according to the vehicle entering time, the vehicle exiting time, the virtual electronic fence distance and the distance between the two adjacent monitoring cameras when the vehicle passes through the two adjacent monitoring cameras. The method can overcome the limitation of the range of point speed measurement, but because the camera is influenced by environmental factors, the phenomenon that the license plate information of the running vehicle cannot be captured and obtained often occurs under the conditions of severe meteorological environment, illumination environment and the like. Meanwhile, the problem of interval speed measurement under the condition that the license plate is shielded cannot be solved.

SUMMERY OF THE UTILITY MODEL

For solving above technical problem, the utility model provides a highway interval system of testing speed, it does not receive abominable meteorological environment, illumination environment to influence, also can effectively solve the license plate and shelter from the interval test problem under the condition.

The utility model provides a highway interval speed measurement system, includes the cloud ware, still includes road side unit, the control unit and communication unit, the control unit with road side unit, communication unit connect, communication unit still with the cloud ware is connected.

Preferably, one of the roadside units, one of the control units, and one of the communication units are disposed in a group on a highway.

In any of the above schemes, preferably, at least two groups of the road side units, the control units and the communication units are arranged in groups.

In any of the above embodiments, preferably, when the number of the roadside units, the control units, and the communication units arranged in a group is more than two, the roadside units, the control units, and the communication units are arranged on the expressway at equal intervals or at partial equal intervals or at unequal intervals.

Preferably, in any of the above schemes, the roadside unit is installed on a highway portal frame, and the control unit and the communication unit in the same group are installed in a box beside a portal frame foundation.

In any of the above schemes, preferably, the roadside units, the control units, and the communication units in the same group are disposed inside a box of an isolation zone on the side of a highway or in a road.

In any of the above embodiments, preferably, the roadside Unit includes a 5.8GHz communication module, and is in communication connection with an On Board Unit (OBU) or a composite express highway card (CPC card) at a 5.8GHz communication frequency.

Preferably, in any of the above schemes, the control unit is in communication connection with the road side unit through at least one of an RS232/RS485 serial port, a USB interface, and an I/O transmission mode.

Preferably, in any of the above schemes, the communication unit is in communication connection with the control unit through a serial port.

In any of the above schemes, preferably, the communication unit is in communication connection with the cloud server through ethernet.

In any of the above embodiments, preferably, the roadside unit communicates with the on-board OBU or the CPC card to perform bidirectional authentication.

In any of the above embodiments, preferably, the control unit acquires ID information of the OBU or the CPC card and time for the roadside unit to communicate with the on-board OBU or the CPC card.

Preferably, in any of the above schemes, the communication unit sends the communication time information, the OBU, or the CPC card ID information acquired by the control unit to the cloud server.

Preferably, in any of the above schemes, the cloud server is in communication connection with the highway toll collection system through at least one of ethernet, GSM, and GPRS, and acquires the vehicle license plate information according to the ID information of the OBU or CPC card.

Preferably, in any of the above aspects, the cloud server calculates the average speed of the vehicle according to the communication time between the vehicle and the two road side units and the distance between the two road side units.

Preferably, in any of the above schemes, the cloud server is further connected to a traffic management system, and sends vehicle overspeed information to the traffic management system.

Preferably, in any of the above schemes, the cloud server sends the vehicle overspeed information to the high-speed toll collection system, so as to remind the vehicle when the vehicle exits the highway.

The utility model discloses an interval system of testing speed of highway can carry out speed detection to the vehicle under abominable meteorological environment, illumination environment, does not receive the influence that the license plate sheltered from simultaneously, in addition, the utility model discloses the vehicle that has utilized to get into highway possesses this characteristic of on-vehicle OBU or CPC card, carries out equipment compatibility with the vehicle charge function for highway electromechanical engineering project cost significantly reduces.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the inter-highway zone speed measurement system according to the present invention.

Fig. 2 is an installation schematic diagram of another embodiment of the highway interval speed measuring system according to the utility model discloses.

Fig. 3 is an installation schematic diagram of still another embodiment of the inter-highway speed measurement system according to the utility model discloses.

Fig. 4 is a schematic view of the operation flow of another embodiment of the inter-highway zone speed measuring system according to the present invention.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention with reference to the following examples.

Example 1

As shown in fig. 1, the inter-highway zone speed measurement system includes a road side unit 10, a control unit 11, a communication unit 12 and a cloud server 13, where the control unit 11 is connected with the road side unit 10 and the communication unit 12, and the communication unit 12 is further connected with the cloud server 13. The road side units 10, the control unit 11 and the communication unit 12 are arranged on the expressway in groups, and at least two groups are arranged. The road side unit 10 is also in communication connection with an on-board OBU or a CPC card. The cloud server 13 is also connected with a highway toll collection system.

The roadside unit 10 is provided with a 5.8GHz communication antenna and communicates with the vehicle-mounted OBU or the CPC card through a 5.8GHz communication frequency. The communication between the roadside unit 10 and the vehicle-mounted OBU or CPC card adopts the DSRC (Dedicated Short Range Communications) technology conforming to GB/T20851, and the communication process and the service primitive conform to the specifications of GB/T20851.2, GB/T20851.3 and the technical requirement for toll road networking toll collection ambiguity path identification. The roadside unit is further provided with a microprocessor and an RS485 interface, wherein the microprocessor is used for controlling and receiving data communicated by the roadside unit and the vehicle-mounted OBU or CPC card and sending the data to the control unit through the RS485 interface.

The control unit 11 is provided with an RS485 interface, an RS232 interface and a microprocessor, the RS485 interface is used for receiving data sent by the roadside unit 10, the microprocessor processes the received data sent by the roadside unit 10, acquires ID information of the vehicle-mounted OBU or CPC card, acquires time for the roadside unit 10 to communicate with the vehicle-mounted OBU or CPC card, and then sends the ID information and the communication time system to the communication unit 12 through the RS232 interface.

The communication unit 12 is an RS 232-to-ethernet module, and converts the received RS232 data into ethernet data, and then sends the ethernet data to the cloud server 13 through ethernet. The RS 232-to-Ethernet module can adopt the existing modules which are mainstream at present, such as C2000N 2S1, C2000-B2-SFE0101-AA1 and the like.

The cloud server 13 is connected with a highway toll collection system through at least one communication mode of Ethernet, GSM and GPRS, and acquires vehicle license plate information according to the ID information of the OBU or CPC card.

The cloud server 13 may also be connected to a traffic management system, and is configured to send vehicle violation information to the traffic management system when it is determined that the vehicle is speeding.

As shown in fig. 2, when the number of the roadside units 10, the control unit 11, and the communication unit 12 is more than two, they are disposed on the expressway at unequal intervals. The roadside unit 10 is installed on an expressway portal frame 20, a box 21 is arranged beside the base of the portal frame 20, and the control unit 11 and the communication unit 12 are installed in the box 21 beside the base of the portal frame. The control unit 11 is in communication connection with the road side unit 10 through an RS485 serial port, and the communication unit 12 is in communication connection with the control unit 11 through an RS 232. The roadside units 10, the control unit 11 and the communication unit 12 are arranged at unequal intervals, each roadside unit 10 has a unique identification number representing position information, the identification number is represented as ka.b, and if the identification number of a certain roadside unit is K100.500, the identification number represents that the roadside unit is located at 100.5 kilometers of the expressway. The cloud server 13 stores therein an identification number of each roadside unit 10.

Example 2

As shown in fig. 3, when the number of the roadside units 10, the control unit 11, and the communication unit 12 is more than two, the roadside units are disposed on the expressway at equal intervals. Boxes 21 are arranged on the expressway bidirectional lane isolation belts at equal intervals, and the road side unit 10, the control unit 11 and the communication unit 12 are mounted in the boxes 21. The control unit 11 is in communication connection with the road side unit 10 through an RS232 serial port. The control unit 11 and the road side unit 10 may also be connected through a USB interface or an I/O transmission manner.

Example 3

Taking the speed detection of a certain vehicle by the highway interval speed measuring system as an example, the working flow of the highway interval speed measuring system is shown in fig. 4. When a vehicle enters a highway, for the vehicle with the OBU, the ID information of the OBU and the relevant information of the vehicle with the OBU, including license plate information and vehicle type information, are bound, and the vehicle with the OBU can directly drive in at a toll gate of the highway; for vehicles without OBUs, the CPC card is received at a toll gate of the expressway, and ID information of the CPC card is bound with vehicle information including license plate information and vehicle type information for receiving the card. When a vehicle enters a highway, the highway toll collection system reads the ID information and the related binding information of an OBU or a CPC card of the vehicle entering the highway. Step S41 is executed: when the vehicle runs into the communication range of the road side unit A, the road side unit A communicates with an OBU or a CPC card carried on the vehicle to perform bidirectional authentication, and bidirectional authentication information is sent to the control unit A in the same group as the road side unit A through a communication interface. The DSRC technology conforming to GB/T20851 is adopted in the process of bidirectional authentication of the roadside unit A and the OBU or the CPC card, and the communication process and the service primitive conform to GB/T20851.2, GB/T20851.3 and the specification of 'toll road networking toll collection ambiguous path identification technology'. Step S42 is executed: the control unit A processes the received bidirectional authentication information, acquires the ID information of the OBU or the CPC card and the time information of the communication between the road side unit A and the OBU or the CPC card, and then sends the acquired ID information and the communication time information to the communication unit A in the same group through a serial port. Step S43 is executed: the communication unit A converts serial port communication information and then sends the serial port communication information to the cloud server through the Ethernet. When the vehicle continues to travel to the communication range of the road side unit B, executing the steps S44-S46: the road side unit B communicates with an OBU or a CPC card carried on a vehicle, performs bidirectional authentication, and transmits bidirectional authentication information to the control unit B in the same group through a communication interface; the control unit B processes the received bidirectional authentication information, acquires the ID information of the OBU or CPC card and the time information of the communication between the road side unit B and the OBU or CPC card, and then sends the acquired ID information and the communication time information to the communication unit B in the same group through a serial port; and the communication unit B converts serial port communication information and then sends the serial port communication information to the cloud server through the Ethernet. Step S47 is executed: the cloud server calculates the average speed of the vehicle passing through according to the received information. The cloud server stores identification numbers of the road side unit A and the road side unit B, the distance L between the road side unit A and the road side unit B is obtained through the identification numbers, the running time T of the vehicle is obtained through the time difference of communication between the vehicle and the road side unit A and the road side unit B, and the average running speed of the vehicle between the road side unit A and the road side unit B is L/T. The cloud server judges whether the average speed exceeds the maximum speed specified by the road section. If so, go to step S48: and transmitting relevant information of the overspeed vehicle, such as license plate information, OBU/CPC card ID information, overspeed road section information and the like to a traffic management system and/or a highway toll collection system. The highway toll collection system can prompt the vehicle of overspeed violation when the vehicle leaves the highway. And after receiving the vehicle overspeed information, the traffic management system performs subsequent vehicle violation processing.

Example 4

In order to reduce the cost of the electromechanical engineering project of the expressway, the road side unit 10 may adopt a road side unit which is already arranged on the expressway at present and is used for marking the vehicle running path, and the road side unit 10 used by the expressway interval speed measuring system may also be used for marking the vehicle running path.

In order to adapt to the construction conditions of different sections of the expressway, the installation modes of the drive test unit 10, the control unit 11 and the communication unit 12 are not limited to the above examples, and the drive test unit 10, the control unit 11 and the communication unit 12 can be installed comprehensively according to the conditions, or can be installed in other modes, such as installing a box body on a gantry, installing all the drive test unit 10, the control unit 11 and the communication unit 12 in the box body on the gantry, and the like.

It should be noted that the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the foregoing embodiments illustrate the present invention in detail, those skilled in the art will appreciate that: it is possible to modify the solutions described in the foregoing embodiments or to substitute some or all of the technical features thereof, without departing from the scope of the present invention.

Claims

1. The utility model provides an interval speed measurement system of highway, includes cloud ware, its characterized in that: the system comprises a road side unit, a control unit and a communication unit, wherein the control unit is connected with the road side unit, the control unit is also connected with the communication unit, and the communication unit is also connected with the cloud server.

2. The highway inter-zone speed measurement system according to claim 1, wherein: one of the roadside units, one of the control units, and one of the communication units are disposed in a group on a highway.

3. The highway inter-zone speed measurement system according to claim 2, wherein: at least two groups of the road side units, the control units and the communication units are arranged in groups.

4. The highway inter-zone speed measurement system of claim 3, wherein: when the number of the road side units, the control units and the communication units which are arranged in groups is more than two groups, the road side units, the control units and the communication units are arranged on the expressway in an equally-spaced or partially equally-spaced or unequally-spaced mode.

5. The highway inter-zone speed measurement system according to claim 2, wherein: the roadside unit is arranged on a highway portal frame, and the control unit and the communication unit which are in the same group are arranged in a box body beside a portal frame foundation.

6. The highway inter-zone speed measurement system according to claim 2, wherein: the road side units, the control units and the communication units in the same group are arranged in a box body of an isolation zone on the road side or the road of the expressway.

7. The highway inter-zone speed measurement system according to claim 1, wherein: the road side unit is provided with a 5.8GHz communication module and is in communication connection with the vehicle-mounted OBU or the CPC card through a 5.8GHz communication frequency.

8. The highway inter-zone speed measurement system according to claim 1, wherein: the control unit is in communication connection with the road side unit through at least one of an RS232/RS485 serial port, a USB interface and an I/O transmission mode.

9. The highway inter-zone speed measurement system according to claim 1, wherein: the communication unit is in communication connection with the control unit through a serial port.

10. The highway inter-zone speed measurement system according to claim 1, wherein: the communication unit is in communication connection with the cloud server through Ethernet.

11. The highway inter-zone speed measurement system according to claim 1, wherein: the cloud server is in communication connection with the highway toll collection system through at least one of Ethernet, GSM and GPRS.

12. The highway inter-zone speed measurement system according to claim 1, wherein: the cloud server is also connected with the traffic management system.