Traffic flow acquisition device and method based on roadside equipment

Abstract

The invention relates to the technical field of traffic information, and more specifically discloses a traffic flow acquisition device and method based on roadside equipment, and the device comprises a camera shooting assembly, the top of the camera shooting assembly is fixedly connected with an upper layer assembly, and the top of the upper layer assembly is provided with a solar assembly. A supporting assembly is installed at the position, located at the bottom of the solar assembly, in the upper-layer assembly, the supporting assembly controls ascending and descending of the solar assembly, a bearing box is installed at the bottom of the camera assembly, and a battery, a millimeter wave radar, a control unit and an analysis unit are installed in the bearing box; through the arrangement of the image acquisition unit and the traffic flow acquisition system, the multi-directional wave circulation attenuation rate at the intersection can be calculated by using the running speed, the number and the time of traffic participants, the indication capability of traffic signals is optimized through statistics of the change of the attenuation rate, and a circulation space region map is formed in combination with a plurality of intersections, so that the traffic flow is more accurate. And the passing efficiency of each multi-direction intersection is improved.

Description

Technical Field

[0001] This invention relates to the field of traffic information technology, and more specifically to a traffic flow collection device and method based on roadside equipment. Background Technology

[0002] Multidimensional digital traffic flow data includes vehicle type data, vehicle density data, vehicle behavior data, and traffic signal data. By analyzing multidimensional digital traffic flow data, we can understand travel patterns and behaviors in different time periods and areas, helping urban planners and traffic management departments to develop effective traffic optimization strategies.

[0003] Chinese invention patent CN118824020A discloses a multi-dimensional digital traffic flow data acquisition method, device, and system, comprising: obtaining the road condition complexity at each time point based on the magnitude of vehicle density and average speed at each time point and the correlation between changes in vehicle density and average speed; obtaining the feature distance between each two time points based on the correlation of each type of road condition influence feature and the difference in influence features of the same type of road condition between each two time points; and obtaining the inverse distance weighted interpolation result and linear interpolation result for each missing time point based on the feature distance between each missing time point and several other time points, as well as the vehicle density at several other time points, and obtaining the vehicle density interpolation result for each missing time point. This invention, based on the road condition complexity, combines inverse distance weighted interpolation and linear interpolation to fill in missing values, achieving more accurate and realistic missing value filling.

[0004] Therefore, current traffic flow data collection systems typically employ a single-point collection method, using a combination of fixed solar power supply and a single sensor (such as a camera or radar). This approach undoubtedly has several problems. Firstly, in terms of accuracy, existing collection systems only collect information from a single location and cannot eliminate information interference to generate high-precision trajectory information of traffic participants. Secondly, existing equipment is computationally difficult, has a heavy statistical workload, and requires continuous power supply. However, stand-alone systems cannot continue to work effectively in low-power environments to effectively generate high-precision traffic flow information. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a traffic flow collection device and method based on roadside equipment to solve the problems existing in the background art.

[0006] This invention provides the following technical solution: a traffic flow collection device and method based on roadside equipment, including a camera component, an upper component fixedly connected to the top of the camera component, a solar panel installed on the top of the upper component, a support component installed inside the upper component at the bottom of the solar panel, the support component controlling the rising and falling of the solar panel, a carrier box installed at the bottom of the camera component, a battery, a millimeter-wave radar, a control unit and an analysis unit installed inside the carrier box, an upper fixing strap and a lower fixing strap installed on the back of the carrier box, the lower fixing strap being quickly installed by a buckle, and an image acquisition unit installed on the front of the camera component;

[0007] Furthermore, the support assembly includes an I-beam box and a longitudinal support frame. The longitudinal support frame is installed on the top of the I-beam box. Movable blocks are installed at both ends of the I-beam box. A hinge rod is hinged to the top of the movable block. The other end of the hinge rod is hinged to the bottom of the solar panel. A snap-fit ​​plate is fixedly connected to the side of the movable block and snaps onto the I-beam box. A mirror screw is installed at the bottom of the I-beam box. The mirror screw has a mirror structure. A displacement control block is sleeved on the threaded groove of the mirror screw. A gear is installed at one end of the mirror screw and meshes with the transmission assembly.

[0008] Furthermore, the I-beam box includes an I-beam body, an I-beam groove on the side of the I-beam body, a snap-fit ​​plate installed on the I-beam groove, a pressing rocker installed inside the I-beam body, a pressing plate with its top installed inside the longitudinal support frame, and a pressing plate with its bottom installed on the side of the pressing rocker in the I-beam box, pressing the inclined surface of the pressing rocker when it descends. Guide rods are fixedly connected to both ends of the I-beam body, and a main spring is sleeved on the outer side of the guide rods.

[0009] Furthermore, the rocker arm consists of an inclined plate, a support plate, and a baffle. A compression spring is installed on the inner side of the baffle, and the compression spring applies an outward pushing force to the baffle.

[0010] Furthermore, the solar module includes a main charging plate and a secondary charging plate. The secondary charging plate is mounted on the bottom slide rail of the main charging plate. The bottom of the secondary charging plate is mounted on the inner side of the upper module through a secondary plate hinge block. The bottom of both the main charging plate and the secondary charging plate are fixedly connected to a first connecting block. The two first connecting blocks are connected by a main and a secondary spring. The main and a secondary spring apply a pulling force to the secondary charging plate, so that the secondary charging plate is housed at the bottom of the main charging plate.

[0011] Furthermore, the analysis unit includes an edge perception layer, an intersection analysis layer, and a network decision layer. The edge perception layer includes a dual-mode solar energy device, a multispectral camera, and a millimeter-wave radar. The multispectral camera and millimeter-wave radar are used to collect parameter information, including the speed and number of various types of moving units. The intersection analysis layer calculates traffic flow information through the analysis unit, including a traffic flow band processor, a violation filter, and a path tracing engine. The network decision layer includes the generated traffic flow regional map, traffic flow time map, and device health monitoring network.

[0012] Furthermore, the inside of the carrying box is equipped with a power sensor. When the energy storage is severely reduced, the power sensor transmits the information to the early warning center. The early warning center collects the traffic flow information at this time through the analysis unit to determine whether it is at the peak of traffic flow. By reducing the resolution, a more efficient multi-device joint calculation method is adopted to collect traffic flow information, reduce or eliminate the calculation of the trajectory changes of traffic participants, use other devices to perform trajectory calculation, optimize the calculation method, and reduce the energy consumption at a single intersection.

[0013] Furthermore, a displacement component is installed inside the moving block, and the control method of the displacement component is the same as that of the mirror screw.

[0014] A method for collecting traffic flow based on roadside equipment includes the following steps:

[0015] S1: The image acquisition unit is used as a multispectral camera to collect parameter information, including the type of motion unit, the speed of the motion unit, and the number of motion units. Pedestrians, electric vehicles, and cars are classified according to different types. Specific trajectory information is collected based on feature points, and interference items are eliminated through speed information.

[0016] S2: Capture burst traffic at intersection traffic lights, collect initial traffic peak information, record peak size, record the volume of traffic passing through multiple directions within a unit of time, and record the time when the minimum value occurs;

[0017] S3: Generate a throughput curve based on the multi-directional throughput parameters with time as the variable, calculate the decay rate, and determine that the throughput is too high when it is below the threshold, exceeding the intersection's capacity. At this time, establish a throughput curve, calculate the throughput value, and combine it with other multi-directional intersections to optimize traffic light time limits, increase throughput, and alleviate traffic pressure. When the decay rate is higher than the threshold, determine that the throughput is lower than the intersection's maximum traffic pressure, establish a flow speed curve, so that multiple intersections form a stable time difference, allowing traffic participants to pass through multiple intersections as uninterruptedly as possible at a stable and safe speed.

[0018] S4: When rain and snow accumulate, the weight of the rain and snow on the charging motherboard causes the charging motherboard to descend. During the descent, the charging motherboard presses down on the longitudinal support frame, causing the pressure plate to act on the inclined plate. The inclined plate, through the support plate, causes the baffle to compress the pressure spring, causing the snap-fit ​​plate to lose the baffle pressure. The moving block retracts under the action of the main spring, causing the charging motherboard to quickly lift upward and clear the snow from the top surface of the charging motherboard.

[0019] S5: When prolonged cloudy weather leads to increased energy consumption and severely reduced energy storage, the power sensor transmits information to the early warning center. The early warning center analyzes the traffic flow information at this time to determine whether it is at a peak traffic volume. When it is not at a peak, it reduces the resolution and adopts a more efficient multi-device joint calculation method to collect traffic flow information, reduces or eliminates the calculation of changes in the trajectory of traffic participants, utilizes the technical calculation of other devices, optimizes the calculation method, and reduces the energy consumption at a single intersection. At the same time, when there is sufficient sunlight, the charging sub-board is activated, actively pushing the charging main board upward to expose the charging sub-board, increase the charging area, and reduce the calculation and statistical pressure on other devices.

[0020] The technical effects and advantages of this invention are as follows:

[0021] 1. This invention, by incorporating an image acquisition unit and a traffic flow acquisition system, facilitates the calculation of the multi-directional wave flow attenuation rate at intersections using the running speed, number, and time of traffic participants. By statistically optimizing the indication capability of traffic signals through changes in the attenuation rate, and combining multiple intersections to form a spatial map of flow, it increases the multi-directional traffic efficiency at each intersection.

[0022] 2. By incorporating a support component, this invention facilitates the downward pressure of the charging motherboard on the longitudinal support frame when rain and snow accumulate. This causes the pressure plate to act on the inclined plate, releasing the baffle pressure and allowing the charging motherboard to quickly lift upward, clearing the snow from the top surface of the charging motherboard. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the second state of the overall structure of the solar module after it has been unfolded according to the present invention.

[0025] Figure 3 This is a schematic diagram of the support component structure of the present invention.

[0026] Figure 4 This is a schematic diagram of the clamping plate assembly of the present invention.

[0027] Figure 5 This is a schematic diagram of the assembly of the charging motherboard and the charging sub-board of the present invention.

[0028] Figure 6This is a schematic diagram of the solar module of the present invention.

[0029] Figure 7 This is a schematic diagram of the traffic flow acquisition and control system of the present invention.

[0030] Figure 8 This is a schematic diagram of the traffic flow collection method of the present invention.

[0031] Figure 9 This is a schematic diagram of the device power health monitoring method of the present invention.

[0032] The attached diagram is labeled as follows: 1. Camera assembly; 2. Upper assembly; 3. Solar panel; 301. Charging main board; 302. Charging secondary board; 303. First connecting block; 304. Main and secondary springs; 305. Middle hinge block; 306. Secondary board hinge block; 4. Support assembly; 401. I-beam box; 4011. I-beam body; 4012. I-beam groove; 4013. Main spring; 4014. Guide rod; 4015. Compression spring; 4016. Pressing rocker; 402. Longitudinal support frame; 403. Hinge rod; 404. Mirror screw; 405. Displacement control block; 406. Snap-fit ​​plate; 407. Transmission assembly; 408. Pressure plate; 409. Moving block; 5. Carrier box; 6. Upper fixing strap; 7. Image acquisition unit; 8. Buckle; 9. Lower fixing strap. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The traffic flow collection device and method based on roadside equipment involved in the present invention are not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Reference Figure 1 and Figure 2 This invention provides a traffic flow collection device and method based on roadside equipment, including a camera assembly 1, an upper assembly 2 fixedly connected to the top of the camera assembly 1, a solar panel 3 installed on the top of the upper assembly 2, a support assembly 4 installed inside the upper assembly 2 at the bottom of the solar panel 3, the support assembly 4 controlling the rising and falling of the solar panel 3, a carrier box 5 installed at the bottom of the camera assembly 1, a battery, a millimeter-wave radar, a control unit and an analysis unit installed inside the carrier box 5, an upper fixing strap 6 and a lower fixing strap 9 installed on the back of the carrier box 5, the lower fixing strap 9 being quickly installed via a buckle 8, and an image acquisition unit 7 installed on the front of the camera assembly 1;

[0035] In this embodiment, it should be specifically noted that the double-point fixing of the upper fixing strap 6 and the lower fixing strap 9 makes the device unable to move again after it is fixed. An angle adjustment component is installed between the camera component 1, the upper fixing strap 6 and the carrier box 5 to facilitate the adjustment of the angle orientation of the camera component 1.

[0036] The main difference between this embodiment and the prior art is that this embodiment uses the running speed, number and time of traffic participants to calculate the wave flow attenuation rate of multi-directional traffic at the intersection, and uses the change of attenuation rate to statistically optimize the indication capability of traffic signals, and combines multiple intersections to increase traffic efficiency, specifically in support component 4.

[0037] The above structure is the main structure of this embodiment. It solves the problem that current traffic flow information collection only performs trajectory analysis on a single individual, which cannot effectively reflect the degree of change in traffic flow at traffic lights under different spaces and times, and cannot provide optimal traffic suggestions to adjust traffic light timing. The battery and control unit are existing structures. The specific structure and connection method of the battery will not be described in detail in this embodiment.

[0038] Reference Figure 3 The support assembly 4 includes an I-beam box 401 and a longitudinal support frame 402. The longitudinal support frame 402 is installed on the top of the I-beam box 401. Movable blocks 409 are installed at both ends of the I-beam box 401. A hinge rod 403 is hinged to the top of the movable block 409. The other end of the hinge rod 403 is hinged to the bottom of the solar module 3. A snap-fit ​​plate 406 is fixedly connected to the side of the movable block 409. The snap-fit ​​plate 406 snaps onto the I-beam box 401. A mirror screw 404 is installed at the bottom of the I-beam box 401. The mirror screw 404 has a mirror structure. A displacement control block 405 is sleeved on the threaded groove of the mirror screw 404. The displacement control block 405 is installed on the mirror. Like the mirror screw 404, one end of the screw 404 is equipped with a gear that meshes with the transmission component 407. The transmission component 407 drives the mirror screw 404 to rotate. When rain and snow accumulate, the weight pressure of the rain and snow on the charging motherboard 301 causes the charging motherboard 301 to descend. During the descent, the charging motherboard 301 presses down on the longitudinal support frame 402, causing the pressure plate 408 to act on the inclined plate. The inclined plate, through the support plate, causes the baffle to compress the pressure spring 4015, causing the snap plate 406 to lose the baffle pressure. The moving block 409 retracts under the action of the main spring 4013, causing the charging motherboard 301 to quickly rise and clear the snow from the top surface of the charging motherboard 301.

[0039] In this embodiment, it should be specifically noted that: a displacement component is installed inside the moving block 409. The control method of the displacement component is the same as that of the mirror screw 404. When it is necessary to actively lift the solar panel 3, the moving block 409 is controlled to move inward.

[0040] Referring to the solar panel 3, the I-beam box 401 includes an I-beam body 4011. An I-beam groove 4012 is provided on the side of the I-beam body 4011. A snap-fit ​​plate 406 is installed on the I-beam groove 4012. A pressing rocker 4016 is installed inside the I-beam body 4011. The top of a pressing plate 408 is installed inside the longitudinal support frame 402. The bottom of the pressing plate 408 is installed on the side of the pressing rocker 4016 in the I-beam box 401. When the pressing rocker 4016 is lowered, it presses the inclined surface of the pressing rocker 4016. Guide rods 4014 are fixedly connected to both ends of the I-beam body 4011. A main spring 4013 is sleeved on the outside of the guide rods 4014. The main spring 4013 applies a pulling force to the moving block 409.

[0041] In this embodiment, it should be specifically explained that the rocker arm 4016 is composed of an inclined plate, a support plate and a baffle. A compression spring 4015 is installed on the inner side of the baffle. The compression spring 4015 applies an outward pushing force to the baffle, so that the baffle blocks the head of the snap-fit ​​plate 406 and prevents the moving block 409 from displacing under the pressure of the main spring 4013.

[0042] Reference Figure 5-6 The solar module 3 includes a main charging plate 301 and a secondary charging plate 302. The secondary charging plate 302 is mounted on the bottom slide rail of the main charging plate 301. The bottom of the secondary charging plate 302 is mounted on the inner side of the upper module 2 through a secondary plate hinge block 306. The bottom of both the main charging plate 301 and the secondary charging plate 302 are fixedly connected to a first connecting block 303. The two first connecting blocks 303 are connected by a main and secondary spring 304. The main and secondary spring 304 apply a pulling force to the secondary charging plate 302, so that the secondary charging plate 302 is housed at the bottom of the main charging plate 301. The main charging plate 301 is connected to the hinge rod 403 through a middle hinge block 305.

[0043] In this embodiment, it should be specifically explained that when the energy consumption increases and the energy storage is severely reduced due to prolonged cloudy weather, the charging sub-board 302 is activated again when there is sufficient sunlight. The charging main board 301 is actively pushed upward to expose the charging sub-board 302, thereby increasing the charging area and reducing the computational and statistical pressure on other devices.

[0044] Reference Figure 7-8 The analysis unit includes an edge perception layer, an intersection analysis layer, and a network decision layer. The edge perception layer includes dual-mode solar-powered devices, multispectral cameras, and millimeter-wave radar. The multispectral cameras and millimeter-wave radar are used to collect parameter information, including the speed and number of various moving units. The intersection analysis layer calculates traffic flow information through the analysis unit, including a traffic flow band processor, a violation filter, and a path tracing engine. The network decision layer includes the generated traffic flow regional map, traffic flow time map, and equipment health monitoring network.

[0045] In this embodiment, it is necessary to specifically explain that: the throughput band processor processes the band information, calculates the flow rate and flow information, and calculates the attenuation rate of the throughput and classifies it. When it is below the threshold, it is judged that the throughput is too high and exceeds the intersection's capacity. At this time, a throughput curve is established, the throughput value is calculated, and the traffic light time limit is optimized in combination with other multi-directional intersections to increase the throughput and alleviate traffic pressure. When the attenuation rate is higher than the threshold, it is judged that the throughput is lower than the intersection's maximum traffic pressure. A throughput speed curve is established to form a stable time difference among multiple intersections, so that traffic participants can pass through multiple intersections as uninterruptedly as possible at a stable and safe speed.

[0046] The violation filter has an embedded real-time illegal lane change removal module. It uses a trajectory prediction algorithm to eliminate errors in the vehicle's driving direction statistics. For example, some electric vehicles will turn first and then turn back to go straight, some car companies will cross the line when the light is yellow, and electric vehicles will cross the line before the light is green.

[0047] Reference Figure 9 This device provides a method for monitoring the power health of equipment. When the equipment is in a cloudy environment for a long time, which leads to increased energy consumption and a serious reduction in energy storage, the power sensor transmits information to the early warning center. The early warning center collects the flow information at this time through the analysis unit to determine whether the flow is at a peak.

[0048] During off-peak hours, traffic flow information is collected by reducing resolution and using a more efficient multi-device collaborative calculation method. This reduces or eliminates the calculation of trajectory changes of traffic participants, utilizes other devices for trajectory calculation, optimizes the calculation method, and reduces energy consumption at a single intersection. At the same time, when there is sufficient sunlight, the charging sub-board 302 is activated, actively pushing the charging main board 301 upward to expose the charging sub-board 302, increasing the charging area and reducing the computational and statistical pressure on other devices.

[0049] In this embodiment, it should be specifically explained that: in normal working mode, the image acquisition unit 7 realizes relay tracking of vehicles between intersections through feature vector matching and generates multi-directional trajectory information. Under low power consumption, the device uses the overlapping area of ​​the perspective of adjacent devices to complete the data and uses the movement of pixels to combine with other intersection information to statistically analyze trajectory information, rather than the task content of a single detection point.

[0050] The main problem addressed in this embodiment is: calculating the attenuation rate of multi-directional traffic flow at intersections using the speed, number, and time of traffic participants; statistically analyzing and optimizing the indication capability of traffic signals based on changes in the attenuation rate; and increasing traffic efficiency by combining multiple intersections. This solves the problem that current traffic flow information collection methods, which only analyze the trajectory of a single individual, cannot effectively reflect the degree of traffic flow changes at traffic lights under different spatial and temporal conditions, and therefore cannot provide optimal traffic flow suggestions for adjusting traffic light timings.

[0051] A traffic flow collection method based on roadside equipment, the specific steps of which are as follows:

[0052] S1: The image acquisition unit 7 is used as a multispectral camera to collect parameter information, including the type of motion unit, the speed of the motion unit, and the number of motion units. Pedestrians, electric vehicles, and cars are classified according to different types. Specific trajectory information is collected based on feature points, and interference items are eliminated through speed information.

[0053] S2: Capture burst traffic at intersection traffic lights, collect initial traffic peak information, record peak size, record the volume of traffic passing through multiple directions within a unit of time, and record the time when the minimum value occurs;

[0054] S3: Generate a throughput curve based on the multi-directional throughput parameters with time as the variable, calculate the decay rate, and determine that the throughput is too high when it is below the threshold, exceeding the intersection's capacity. At this time, establish a throughput curve, calculate the throughput value, and combine it with other multi-directional intersections to optimize traffic light time limits, increase throughput, and alleviate traffic pressure. When the decay rate is higher than the threshold, determine that the throughput is lower than the intersection's maximum traffic pressure, establish a flow speed curve, so that multiple intersections form a stable time difference, allowing traffic participants to pass through multiple intersections as uninterruptedly as possible at a stable and safe speed.

[0055] S4: When rain and snow accumulate, the weight pressure of the rain and snow on the charging motherboard 301 causes the charging motherboard 301 to descend. During the descent, the charging motherboard 301 presses down on the longitudinal support frame 402, causing the pressure plate 408 to act on the inclined plate. The inclined plate, through the support plate, causes the baffle to compress the pressure spring 4015, causing the snap-fit ​​plate 406 to lose the baffle pressure. The moving block 409 retracts under the action of the main spring 4013, causing the charging motherboard 301 to quickly rise and clear the snow accumulation on the top surface of the charging motherboard 301.

[0056] S5: When prolonged cloudy weather leads to increased energy consumption and severely reduced energy storage, the power sensor transmits information to the early warning center. The early warning center analyzes the traffic flow information at this time to determine whether it is at a peak traffic volume. When it is not at a peak, it reduces the resolution and adopts a more efficient multi-device joint calculation method to collect traffic flow information, reduce or eliminate the calculation of trajectory changes of traffic participants, utilizes the technical calculation of other devices, optimizes the calculation method, and reduces the energy consumption at a single intersection. At the same time, when there is sufficient sunlight, the charging sub-board 302 is activated, actively pushing the charging main board 301 upward to expose the charging sub-board 302, increase the charging area, and reduce the calculation and statistical pressure on other devices.

[0057] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A traffic flow collection device based on roadside equipment, comprising a camera assembly (1), characterized in that: The top of the camera assembly (1) is fixedly connected to the upper component (2), the top of the upper component (2) is equipped with a solar panel (3), the upper component (2) is equipped with a support component (4) located at the bottom of the solar panel (3), the support component (4) controls the rise and fall of the solar panel (3), the bottom of the camera assembly (1) is equipped with a carrier box (5), the inside of the carrier box (5) is equipped with a battery, millimeter-wave radar, control unit and analysis unit, the back of the carrier box (5) is equipped with an upper fixing strap (6) and a lower fixing strap (9), the lower fixing strap (9) is quickly installed by a buckle (8), and the front of the camera assembly (1) is equipped with an image acquisition unit (7); The support assembly (4) includes an I-beam box (401) and a longitudinal support frame (402). The longitudinal support frame (402) is installed on the top of the I-beam box (401). Movable blocks (409) are installed at both ends of the I-beam box (401). A hinge rod (403) is hinged to the top of the movable block (409). The other end of the hinge rod (403) is hinged to the bottom of the solar module (3). A snap-fit ​​plate (406) is fixedly connected to the side of the movable block (409). The snap-fit ​​plate (406) is snapped onto the I-beam box (401). A mirror screw (404) is installed at the bottom of the I-beam box (401). The mirror screw (404) is a mirror structure. A displacement control block (405) is sleeved on the thread groove of the mirror screw (404). The displacement control block (405) is installed on the mirror screw (404). A gear is installed at one end of the mirror screw (404) and meshes with the transmission assembly (407).

2. The traffic flow collection device based on roadside equipment according to claim 1, characterized in that: The I-shaped box (401) includes an I-shaped body (4011), an I-shaped groove (4012) is provided on the side of the I-shaped body (4011), a snap-fit ​​plate (406) is installed on the I-shaped groove (4012), a pressing rocker (4016) is installed inside the I-shaped body (4011), the top of the pressing plate (408) is installed inside the longitudinal support frame (402), and the bottom of the pressing plate (408) is installed on the side of the pressing rocker (4016) in the I-shaped box (401). When the pressing rocker (4016) descends, it presses the inclined surface of the pressing rocker (4016). Guide rods (4014) are fixedly connected to both ends of the I-shaped body (4011), and a main spring (4013) is sleeved on the outside of the guide rods (4014).

3. A traffic flow collection device based on roadside equipment according to claim 2, characterized in that: The pressing rocker (4016) consists of an inclined plate, a support plate and a baffle. A compression spring (4015) is installed on the inner side of the baffle, and the compression spring (4015) applies an outward pushing force to the baffle.

4. A traffic flow collection device based on roadside equipment according to claim 3, characterized in that: The solar module (3) includes a main charging plate (301) and a secondary charging plate (302). The secondary charging plate (302) is mounted on the bottom slide rail of the main charging plate (301). The bottom of the secondary charging plate (302) is mounted on the inner side of the upper module (2) through a secondary plate hinge block (306). The bottom of both the main charging plate (301) and the secondary charging plate (302) are fixedly connected to a first connecting block (303). The two first connecting blocks (303) are connected by a main and secondary spring (304). The main charging plate (301) is connected to the hinge rod (403) through a middle hinge block (305).

5. A traffic flow collection device based on roadside equipment according to claim 4, characterized in that: The analysis unit includes an edge perception layer, an intersection analysis layer, and a network decision layer. The edge perception layer includes dual-mode solar energy devices, multispectral cameras, and millimeter-wave radar. The multispectral cameras and millimeter-wave radar are used to collect parameter information, including the speed and number of various types of moving units. The intersection analysis layer calculates traffic flow information through the analysis unit, including a traffic flow band processor, a violation filter, and a path tracing engine. The network decision layer includes the generated traffic flow regional map, traffic flow time map, and equipment health monitoring network.

6. A traffic flow collection device based on roadside equipment according to claim 5, characterized in that: The carrier box (5) is equipped with an energy sensor. When the energy storage is severely reduced, the energy sensor will transmit the information to the early warning center. The early warning center will collect the traffic information at this time through the analysis unit to determine whether it is at the peak of traffic flow. By reducing the resolution, a more efficient multi-device joint calculation method is adopted to collect traffic information, reduce or cancel the calculation of the trajectory changes of traffic participants, use other devices to perform trajectory calculation, optimize the calculation method, and reduce the energy consumption at a single intersection.

7. A traffic flow collection device based on roadside equipment according to claim 6, characterized in that: The movable block (409) is equipped with a displacement component, and the control method of the displacement component is the same as that of the mirror screw (404).

8. A method for collecting traffic flow based on roadside equipment, characterized in that: Using a traffic flow collection device based on roadside equipment as described in claim 7 includes the following steps: S1: The image acquisition unit (7) is used as a multispectral camera to collect parameter information, including the type of motion unit, the speed of the motion unit and the number of motion units. Pedestrians, electric vehicles and cars are classified according to different types. Specific trajectory information is collected based on feature points, and interference items are eliminated through speed information. S2: Capture burst traffic at intersection traffic lights, collect initial traffic peak information, record peak size, record the volume of traffic passing through multiple directions within a unit of time, and record the time when the minimum value occurs; S3: Generate a throughput curve based on the multi-directional throughput parameters with time as the variable, calculate the decay rate, and determine that the throughput is too high when it is below the threshold, exceeding the intersection's capacity. At this time, establish a throughput curve, calculate the throughput value, and combine it with other multi-directional intersections to optimize traffic light time limits, increase throughput, and alleviate traffic pressure. When the decay rate is higher than the threshold, determine that the throughput is lower than the intersection's maximum traffic pressure, establish a flow speed curve, so that multiple intersections form a stable time difference, allowing traffic participants to pass through multiple intersections as uninterruptedly as possible at a stable and safe speed. S4: When rain and snow accumulate, the weight pressure of the rain and snow on the charging motherboard (301) causes the charging motherboard (301) to descend. When descending, the charging motherboard (301) presses down on the longitudinal support frame (402), causing the clamping plate (408) to act on the inclined plate. The inclined plate compresses the baffle spring (4015) through the support plate, causing the snap-fit ​​plate (406) to lose the baffle pressure. The moving block (409) contracts under the action of the main spring (4013), causing the charging motherboard (301) to quickly rise and clear the snow accumulation on the top surface of the charging motherboard (301). S5: When the environment is cloudy for a long time, resulting in increased energy consumption and severely reduced energy storage, the power sensor transmits information to the early warning center. The early warning center analyzes the traffic information at this time to determine whether it is at the peak of traffic flow. When it is not at the peak, it reduces the resolution and adopts a more efficient multi-device joint calculation method to collect traffic information, reduce or cancel the calculation of the trajectory changes of traffic participants, and use other devices to perform technical calculations to optimize the calculation method and reduce the energy consumption at a single intersection. At the same time, when the sunlight is sufficient, the charging sub-board (302) is activated, and the charging main board (301) is actively pushed upward to expose the charging sub-board (302) to increase the charging area and reduce the calculation and statistical pressure on other devices.

Images