Portable traffic data investigation device

Abstract

The utility model relates to the field of intelligent traffic, in particular to a portable traffic data investigation device, which comprises a central controller (1), an attitude sensing unit (2), a positioning unit (3), a visual sensing unit (4) and a millimeter wave radar unit (5), and is characterized in that the attitude sensing unit (2), the positioning unit (3), the visual sensing unit (4) and the millimeter wave radar unit (5) are arranged on a shell (6); the positions are fixed through structural parts, data of all units are transmitted into the central controller (1) and stored, the defects that existing equipment is large in size and complex in installation, and detection data types are not considered at the same time can be overcome, and rapid installation, automatic positioning and accurate data acquisition of the traffic data investigation and survey device are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of wisdom traffic, especially a portable traffic data research device. BACKGROUND

[0002] Wisdom traffic is an important part of modern city development, which realizes the efficient management and optimization of city traffic system through the integration of advanced information communication technology, artificial intelligence, big data analysis and other means, can improve road traffic capacity, shorten travel time, enhance traffic safety, and provide effective traffic supervision means for government departments, the advantage of wisdom traffic system lies in improving traffic efficiency, enhancing traffic safety, reducing environmental impact, and quickly deploying and low-cost implementation.

[0003] So far, common traffic data research devices include radar speed gun, roadside laser type separation equipment, millimeter wave radar, unmanned aerial vehicle image acquisition and analysis equipment, among which, traffic data collection based on millimeter wave radar and video is a new type of collection method. The existing equipment is large in size, which is not conducive to roadside temporary test, and the installation and debugging are complex, which is difficult for engineers to master, and the collected data often cannot be used, the traffic data research equipment based on millimeter wave radar has wide coverage, which can generally cover 100 to 300m range, and the speed measurement is accurate, which can generally reach ±0.1km / h, but the vehicle type distinguishing ability is poor, and the accuracy is generally 70%. The vehicle type distinguishing ability of the traffic data research equipment based on vision is strong, and the accuracy can reach 95%, but the speed measurement is not accurate enough, and the error is generally ±5km / h. SUMMARY

[0004] The utility model aims at overcoming the insufficient of traffic data research equipment in prior art, which is large in size, complex in installation and debugging, and does not consider the detection data type, and provides a portable traffic data research device.

[0005] In the first aspect, the utility model provides a portable traffic data research device, which is composed of a central controller, a posture sensing unit, a positioning unit, a visual sensing unit, a millimeter wave radar unit and a shell.

[0006] Among them, the posture sensing unit, the positioning unit, the visual sensing unit and the millimeter wave radar unit are respectively installed in the shell through the structure, and the information of the four units is input into the central controller and saved by the central controller.

[0007] The four units and the central controller are assembled into the portable traffic data investigation unit through a shell, data is collected from four aspects of attitude sensing, positioning, visual sensing and millimeter wave radar, multiple dimensions of traffic data collection are considered, and three aspects of wide coverage, accurate speed measurement and accurate vehicle type differentiation are considered.

[0008] Preferably, the central controller is integrated inside the shell or uses an external device, which is in communication connection with the attitude sensing unit, the positioning unit, the visual sensing unit and the millimeter wave radar unit.

[0009] Preferably, the attitude sensing unit detects the pitch angle and roll angle of the portable traffic data investigation unit.

[0010] The attitude sensing unit provides the pitch angle and roll angle of the portable traffic data investigation unit during installation, so that the installer can quickly install the portable traffic data investigation unit.

[0011] Preferably, the positioning unit is a Beidou, GPS, Galileo, GLONASS or any combination of fusion satellite positioning system, which can detect the latitude and longitude record and satellite time service of the portable traffic data investigation unit.

[0012] The positioning unit can automatically record the data collection position, including the latitude and longitude record, and provide a basis for data processing of the central controller, and record the satellite time service to provide the system time for the portable traffic data investigation device.

[0013] Preferably, the visual sensing unit can collect images to obtain road and target visual information.

[0014] The visual sensing unit collects real-time images to obtain road and target visual information, and provides a basis for accurate vehicle type differentiation for the real-time central controller.

[0015] Preferably, the millimeter wave radar unit can collect real-time target information to obtain vehicle millimeter wave detection information.

[0016] The millimeter wave radar unit collects real-time targets to obtain vehicle millimeter wave detection information, mainly including position and speed information, and considers data collection and detection coverage at the same time.

[0017] Preferably, the central controller includes a data collection module and a data storage module.

[0018] Preferably, the data collection module is used to receive the collected data of the four units.

[0019] The data acquisition module is used for uniformly receiving the acquisition data of the four units, thereby facilitating subsequent storage.

[0020] Preferably, the data storage module is used for storing the acquisition data received by the data acquisition module.

[0021] The data storage module is used for uniformly storing the data of the four units, thereby facilitating data extraction and processing that may occur after the portable traffic data investigation device is used.

[0022] Compared with the prior art, the portable traffic data investigation device has the advantages that

[0023] The portable traffic data investigation device comprises four units and a central controller.

[0024] The portable traffic data investigation device comprises a posture sensing unit, a positioning unit and a visual sensing unit.

[0025] The portable traffic data investigation device comprises a positioning unit. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic view.

[0027] Figure 2 is a functional unit schematic view.

[0028] Markings in the figure:

[0029] Figure 1 , 1 is a central controller, 2 is a posture sensing unit, 3 is a positioning unit, 4 is a visual sensing unit, 5 is a millimeter wave radar unit, and 6 is a shell. DETAILED DESCRIPTION

[0030] The present application will be further described in detail below in combination with test examples and specific embodiments.

[0031] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the present utility model or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution. They do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship, and therefore should not be construed as a limitation of this utility model.

[0032] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0033] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0034] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0035] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0036] Example 1

[0037] like Figure 1 As shown, a portable traffic data survey device comprises a central controller 1, an attitude sensing unit 2, a positioning unit 3, a visual sensing unit 4, a millimeter-wave radar unit 5, and a housing 6.

[0038] The attitude sensing unit 2, the positioning unit 3, the visual sensing unit 4, and the millimeter-wave radar unit 5 are respectively installed inside the housing 6 via structural components. Information from these four units is input into and stored in the central controller 1. Figure 2 As shown.

[0039] In one or more embodiments, the central controller 1 is integrated inside the housing 6 or is an external device, which is communicatively connected to the attitude sensing unit 2, the positioning unit 3, the visual sensing unit 4, and the millimeter-wave radar unit 5. In this embodiment, the central controller 1 is a Jetson AGX Xavier, integrated inside the housing 6.

[0040] The attitude sensing unit 2 detects the pitch and roll angles of the portable traffic data survey unit. In this embodiment, the attitude sensing unit 2 is an MPU6050, which can collect 3-axis acceleration, calculate the pitch and roll angles using the 3-axis acceleration, and send the data to the central controller 1 via a communication interface.

[0041] The positioning unit 3 is a fusion satellite positioning system that uses BeiDou, GPS, Galileo, GLONASS, or any combination thereof, and is capable of detecting the latitude and longitude records and satellite time synchronization of the portable traffic data survey unit. In this embodiment, the positioning unit 3 uses the ATGM336H from Zhongke Microelectronics, which can collect latitude, longitude, elevation, and time information, and transmit it to the central controller 1 via a communication interface. The positioning accuracy is 5 meters in open areas, the cold start positioning time is less than 1 minute, and the warm start positioning time is less than 20 seconds.

[0042] The visual perception unit 4 can acquire images to obtain visual information about roads and targets; the millimeter-wave radar unit 5 can acquire real-time target information to obtain millimeter-wave detection information about vehicles. In this embodiment, the visual perception unit 4 uses a Xiongmai G5S to acquire images, with a main bitstream of 1920*1080 and an acquisition frequency of 25fps. It uses a Blacklight IMX307 CMOS sensor, and the acquired images are sent to the central controller 1 via a communication interface.

[0043] The millimeter-wave radar unit collects millimeter-wave detection information from the vehicle and sends it to the central controller 1 via a communication interface.

[0044] The central controller 1 includes a data acquisition module and a data storage module. The data acquisition module is connected to the four units and receives the acquired data from the four units. The data storage module is used to store the acquired data received by the data acquisition and processing module.

[0045] In this embodiment, the user places the portable traffic data survey device in the road. During installation, the device is quickly installed based on the pitch and roll angle detection by the attitude sensing unit 2, and traffic data detection begins. The MPU6050, CAS Microelectronics ATGM336H, Xiongmai G5S, and millimeter-wave radar unit collect traffic data. The collected data is aggregated into the central processing unit, which stores the data uniformly.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable traffic data survey device, characterized in that, Its components include a central controller (1), an attitude sensing unit (2), a positioning unit (3), a vision sensing unit (4), a millimeter-wave radar unit (5), and a housing (6). The attitude sensing unit (2), the positioning unit (3), the visual sensing unit (4) and the millimeter-wave radar unit (5) are respectively installed in the housing (6) through structural components. The information of the four units, namely the attitude sensing unit (2), the positioning unit (3), the visual sensing unit (4) and the millimeter-wave radar unit (5), is input into the central controller (1) and stored by the central controller (1).

2. The portable traffic data survey device according to claim 1, characterized in that, The central controller (1) is integrated inside the housing (6) or is connected to an external device. The external device is connected to the attitude sensing unit (2), the positioning unit (3), the visual sensing unit (4), and the millimeter-wave radar unit (5).

3. The portable traffic data survey device according to claim 1, characterized in that, The attitude sensing unit (2) detects the pitch and roll angles of the portable traffic data survey unit.

4. The portable traffic data survey device according to claim 1, characterized in that, The positioning unit (3) is a fusion satellite positioning system of Beidou, GPS, Galileo, GLONASS or any combination thereof, which can detect the latitude and longitude records and satellite time synchronization of the portable traffic data survey unit.

5. A portable traffic data survey device according to claim 1, characterized in that, The visual perception unit (4) can perform image acquisition to obtain visual information about roads and targets.

6. The portable traffic data survey device according to claim 1, characterized in that, The millimeter-wave radar unit (5) can collect target information in real time and obtain vehicle millimeter-wave detection information.

7. A portable traffic data survey device according to claim 1, characterized in that, The central controller (1) includes a data acquisition module and a data storage module.

8. A portable traffic data survey device according to claim 7, characterized in that, The data acquisition module is used to receive the data collected by the four units.

9. A portable traffic data survey device according to claim 8, characterized in that, The data storage module is used to store the collected data received by the data acquisition module.

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