Intelligent road deceleration facility and control method thereof

Abstract

The invention is applied to the technical field of road deceleration facilities, and particularly discloses an intelligent road deceleration facility and a control method thereof, and the intelligent road deceleration facility comprises a road surface embedded module, a deformable deceleration module, a vehicle detection module, an acousto-optic early warning module and a central control unit. According to the intelligent road deceleration facility and the control method thereof, the array type TPU air bags are combined with the pneumatic control unit, rapid inflation and deflation of the height of the TPU air bags are achieved through modular closed-loop adjustment, automatic activation is achieved when a vehicle drives into a speed limiting area, the response efficiency is remarkably improved, and convenient maintenance of fault assemblies is supported; when a compliant vehicle and a special vehicle pass, the system automatically recognizes and keeps the deceleration strip flat, it is ensured that the deceleration strip normally passes without delay, and when an overspeed vehicle is detected, the system enables a driver to clearly sense warning information and decelerate in time through a three-level response mechanism of sound and light early warning, flexible inflation and forced intervention.

Description

Technical Field

[0001] The present invention relates to the technical field of road traffic control, and in particular to an intelligent road deceleration facility and a control method thereof. Background Art

[0002] Road deceleration facilities refer to traffic facilities installed on highways to slow down passing vehicles. Therefore, deceleration facilities are widely used in schools, hospitals, community entrances and exits, and accident-prone sections of roads to ensure road traffic safety.

[0003] Currently, the most commonly used traditional road deceleration facilities are fixed rubber or cement speed bumps. The above-mentioned deceleration facilities rely on rigid or semi-rigid structural designs, forcing all vehicles to pass through indiscriminately, causing bumps when low-speed compliant vehicles or special vehicles such as ambulances and fire trucks pass, reducing traffic efficiency and comfort. It is also impossible to adjust the intervention intensity according to vehicle speed or vehicle type, and it is difficult to achieve flexible control of "early warning-graded deceleration" in special scenarios such as mountainous areas with frequent accident curves and hospitals. In addition, although existing variable deceleration facilities such as hydraulic lifting types attempt dynamic adjustment, they are difficult to coordinate efficiently with intelligent transportation systems due to their complex mechanical structure, high maintenance costs and poor durability, which ultimately makes it difficult to balance safety control and traffic efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent road deceleration facility and a control method thereof to solve the problems raised in the above background technology, such as the indiscriminate forced deceleration, the inability to provide early deceleration warning, the lack of dynamic response capability and the poor adaptability to special scenarios of traditional road deceleration facilities.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: A traffic control method based on intelligent road deceleration facilities, comprising the following steps: S1. Multi-source data acquisition and synchronization: Real-time vehicle speed detection is achieved through two-stage embedded coils. The RFID reader is simultaneously activated to scan the vehicle's electronic tag and decode the vehicle model code. The data fusion controller integrates the vehicle speed measured by the two-stage embedded coils with the vehicle model decoded by the RFID reader and transmits the data to the central control unit. S2. Priority Decision and Mode Selection: The central control unit makes a priority determination based on the fusion results: If the vehicle is identified as a special vehicle or its speed is ≤ the speed limit, a Mode 1 command is generated. If the detected speed is greater than 10% of the speed limit and the vehicle is not a special vehicle, a Mode 2 command is generated. If the speed is still greater than 20% of the speed limit after the countdown, a Mode 3 command is generated. All commands are transmitted via the RS485 bus to the hierarchical decision module for execution. S3. Tiered Response and Forced Intervention: The ARM processor and FPGA acceleration module collaborate to process instructions, driving the hierarchical decision-making module to execute a three-level response. S4. Reset, recovery, and maintenance: After the vehicle leaves the site, the central control unit receives feedback from the air pressure sensor and triggers the high-speed solenoid valve group to fully open for exhaust. The TPU airbag collapses and resets under its own weight within 1-2 seconds. The oil-free silent air pump is simultaneously started to drive the jet nozzle to spray 0.4MPa-0.6MPa airflow to clean the surface. The self-check unit cyclically monitors air pressure fluctuations and reports any abnormalities to the operation and maintenance platform.

[0006] Preferably, in the priority decision and mode selection: Mode 1: Normal vehicle speed or special vehicle, close the high-speed solenoid valve group to keep the TPU airbag flat; Mode 2: If the vehicle speed is detected to be ≥10% of the speed limit, the multi-spectral LED strobe light will be triggered to flash in a 2Hz multi-band sequence, and the high-frequency speaker will play the voice warning "Speeding, please slow down" in a directional manner, and a 3-second countdown will be started simultaneously. If the vehicle speed is still ≥10% of the speed limit after the second verification, the oil-free silent air pump will drive the TPU airbag (4) to inflate to a height of 4-6cm to form a primary speed bump to force deceleration; Mode 3: When the vehicle speed exceeds the speed limit by 20% at the end of the countdown, the TPU airbag is raised to a height of 8-12cm to form a final speed bump and implement forced deceleration. By adopting the above technical solution and utilizing the above steps, the driving condition of the vehicle can be intelligently detected, and corresponding instructions can be output to cause the vehicle to slow down or pass normally.

[0007] The present invention also provides an intelligent road deceleration facility, comprising a pavement-embedded module, a deformable deceleration module, a vehicle detection module, an acoustic and light warning module, and a central control unit, wherein the deformable deceleration module is installed in the pavement-embedded module, the vehicle detection module is installed on one side of the pavement-embedded module, the acoustic and light warning module is installed on the side of the road through a column, and the vehicle detection module is installed in front of the acoustic and light warning module, the central control unit is fixed to the side of the facility through a waterproof chassis, the central control unit is respectively connected to the pavement-embedded module, the deformable deceleration module, the vehicle detection module, and the acoustic and light warning module through an RS485 bus, the pavement-embedded module provides a stable installation base for the deformable deceleration module, the deformable deceleration module realizes the deceleration function through the deformation of the TPU airbag, the vehicle detection module identifies the vehicle, and inputs the instruction into the central control unit for execution, and the acoustic and light warning module realizes a multi-dimensional linkage warning for the vehicle; Preferably, the pavement embedded module includes an embedded frame, which is embedded in the installation groove of the speed-limited road. The embedded frame is made of aluminum alloy, and the inner wall of the installation groove is coated with an epoxy resin waterproof coating. The installation groove of the embedded frame is covered with a flexible substrate, and the surface of the flexible substrate is molded with diamond-shaped anti-slip patterns. The diamond-shaped anti-slip patterns of the flexible substrate have a depth of 1.5-3mm. A sealing assembly is provided on the upper surface of the installation groove, and the sealing assembly includes stainless steel anchor bolts and EPDM rubber sealing strips. The stainless steel anchor bolts fix the EPDM rubber sealing strip to the installation groove.

[0008] By adopting the above technical solution, the deformable deceleration module can be supported and installed by utilizing the road surface embedded module installed on the road surface.

[0009] Preferably, the deformable deceleration module includes a TPU airbag, a pneumatic control unit and a quick-release interface. The TPU airbags are installed in an array on the flexible base surface of the road-mounted module. The arrayed TPU airbags are connected to the same air circuit through a quick-release interface. The quick-release interface adopts a snap-on pneumatic pipeline connector. The surface of the TPU airbag is molded with 2mm high anti-slip bumps. The surface of the TPU airbag is coated with a prismatic-grade reflective film. A quick exhaust valve is provided at the bottom of the TPU airbag. The pneumatic control unit includes an oil-free silent air pump, a high-speed solenoid valve group and an air pressure sensor. The pneumatic control unit is connected to the air circuit of the TPU airbag.

[0010] By adopting the above technical solution, deceleration structures of different heights can be formed on the road surface by inflating and deflating the TPU airbag provided in the deformable deceleration module.

[0011] Preferably, the vehicle detection module includes a two-stage buried coil, an RFID reader and a data fusion controller. The two-stage buried coil is installed in front of the sound and light warning module. The two-stage buried coil is buried in the ground at a depth of 4-6 cm. The distance between the first-stage coil and the second-stage coil in the two-stage buried coil is greater than the range of the vehicle traveling for 3 seconds without exceeding the speed limit. The layout distance between the first-stage coil in the two-stage buried coil and the road surface embedded module is D, which satisfies the following formula:

[0012] in: D is the distance from the first-stage coil to the front edge of the road surface embedded module; Design speed limits for roads; decelerate the vehicle for safety; is the total system response time; is a safety margin; = coil detection delay + data processing time + warning effective time; The two-stage buried coil has a built-in ferrite shielding layer, the two-stage buried coil is connected to the LDC0851 signal conditioning chip, the RFID reader is installed by a bracket, the directional antenna array of the RFID reader is set at an elevation angle of 45°, and the data fusion controller has a built-in hardware timer that is synchronized with the data stream of the two-stage buried coil and the RFID reader.

[0013] By adopting the above technical solution, the vehicle detection module can collect vehicle information in real time and input it into the central control unit to generate instructions.

[0014] Preferably, the sound and light warning module includes a high-frequency speaker, a multi-spectrum LED strobe light, a 4G communication unit and a solar charging panel. The high-frequency speaker is fixedly mounted on the surface of the column. The high-frequency speaker has a pre-stored voice command "overspeed, please slow down" in the high-frequency speaker. The multi-spectrum LED strobe light is fixedly connected to the side surface of the column through a bracket. The multi-spectrum LED strobe light is divided into a main warning band and a rain and fog mode. The main warning band of the multi-spectrum LED strobe light flashes in a 2Hz multi-band sequence, 630nm red light / 470nm blue light, and a combined brightness of 5000cd; the rain and fog mode of the multi-spectrum LED strobe light is switched to 590nm yellow light, with a brightness of 8000cd and a color temperature of 2200K. A microprism array reflective layer is integrated on the surface of the multi-spectrum LED strobe light. The 4G communication unit is fixedly mounted on the side surface of the mounting column of the sound and light warning module. After receiving the command of the central control unit, the 4G communication unit pushes warning information to the vehicle navigation. A solar charging panel is fixedly mounted on the top of the mounting column of the sound and light warning module, and the solar charging panel supplies power to the sound and light warning module.

[0015] By adopting the above technical solution, the sound and light warning module can generate sound and light warnings to warn the driver in multiple dimensions.

[0016] Preferably, the central control unit includes an ARM processor, an FPGA acceleration module and a hierarchical decision module. The ARM processor receives relevant data from the data fusion unit in the vehicle detection module in real time through the RS485 bus. The ARM processor and the FPGA acceleration module jointly process instructions to drive the hierarchical decision module to execute a three-level response. The hierarchical decision module includes three modes, namely: Mode 1: For vehicles with normal speed or special conditions, the high-speed solenoid valve group is closed to keep the TPU airbag flat; In mode 2, if the vehicle exceeds the speed limit by 10% or more, the sound and light warning module is triggered and a 3-second countdown is started. If the vehicle is still 10% or more over the speed limit after the second verification, the oil-free silent air pump starts to inflate the TPU airbag to a height of 4-6cm, forming a primary speed bump and forcing the vehicle to slow down to a reasonable range. Mode 3: If the vehicle exceeds the speed limit by 20% or more, the oil-free silent air pump starts to inflate the TPU airbag to a height of 8-12cm, forcing the vehicle to slow down to a reasonable speed.

[0017] By adopting the above technical solution and utilizing the hierarchical decision module, different deceleration instructions can be executed according to the actual situation of the vehicle.

[0018] Preferably, the deformable deceleration module is integrated with a reset and maintenance unit. After the vehicle passes, the central control unit determines that the vehicle has left the site based on the air pressure sensor signal, triggers the high-speed solenoid valve group to open the exhaust, and the TPU airbag collapses by its own weight to achieve a rapid reset in 1-2 seconds, and starts the oil-free silent air pump to drive the jet nozzle to remove surface mud and sand.

[0019] By adopting the above technical solution, the TPU airbag can be quickly reset using the reset and maintenance unit provided in the deformable deceleration module.

[0020] Compared with the prior art, the beneficial effects of the present invention are: the intelligent road deceleration facility and the control method thereof: 1. The present invention utilizes an array of TPU airbags combined with a pneumatic control unit. This allows for rapid inflation and deflation of the TPU airbag height through modular closed-loop regulation. Automatic activation occurs when a vehicle enters a speed-restricted zone, significantly improving response efficiency and enabling convenient maintenance of faulty components. When compliant and special vehicles pass through, the system automatically identifies and maintains the speed bump flat, ensuring smooth passage. When a speeding vehicle is detected, the system utilizes a three-level response mechanism: audio and visual warning, flexible inflation, and forced intervention, enabling the driver to clearly perceive the warning and decelerate promptly. If the vehicle continues to exceed the speed limit, the deformable deceleration module precisely inflates to form a speed bump. The driver can intuitively determine the height difference between the vehicle and the speed bump, as well as the level of intervention, effectively avoiding the risk of loss of control during sudden braking. In rainy and foggy conditions, multi-spectral warnings and automatic drainage and cleaning functions ensure continuous high visibility and anti-skid performance, allowing the driver to quickly identify changing road conditions. 2. The present invention uses a deformable deceleration module and a multi-level vehicle detection module to coordinate control, intelligently distinguish between normal vehicles and speeding vehicles, and at the same time ensure that special vehicles can pass normally, thereby accurately controlling vehicle speeding behavior. Through intelligent hierarchical management, while ensuring road safety, it minimizes interference with compliant vehicles and achieves a precise balance between safety and efficiency. At the same time, based on multi-source data fusion verification technology, coordinated sound and light directional warnings and real-time communication push, a multi-level response mechanism of sound and light warnings and physical intervention is formed, which effectively improves the speed reduction effect of speeding vehicles; the waterproof sealing design of the embedded frame ensures the stable operation of the facility in harsh environments; the central control unit is linked with the traffic signal system to optimize the priority passage efficiency of special vehicles, and at the same time, the airbag rapid reset and self-cleaning functions reduce operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the pavement embedded module of the present invention; Figure 3 This is a structural diagram of the deformable deceleration module of the present invention; Figure 4 This is a structural diagram of a vehicle detection module of the present invention; Figure 5 This is a structural diagram of the sound and light warning module of the present invention; Figure 6 This is a schematic structural diagram of the central control unit of the present invention; Figure 7 This is a schematic diagram of the control flow structure of the present invention.

[0022] In the figure: 1. Embedded frame; 2. Flexible substrate; 3. Sealing component; 4. TPU airbag; 5. Quick-release interface; 6. Oil-free silent air pump; 7. High-speed solenoid valve group; 8. Air pressure sensor; 9. RS485 bus; 10. Two-stage embedded coil; 11. RFID reader; 12. Data fusion controller; 13. High-frequency speaker; 14. Multi-spectrum LED strobe light; 15. 4G communication unit; 16. Solar charging panel; 17. ARM processor; 18. FPGA acceleration module; 19. Hierarchical decision module. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 7 The present invention provides a technical solution: an intelligent road deceleration facility and a control method thereof, including a pre-buried frame 1, a flexible substrate 2, a sealing component 3, a TPU airbag 4, a quick-release interface 5, an oil-free silent air pump 6, a high-speed solenoid valve group 7, an air pressure sensor 8, an RS485 bus 9, a two-stage buried coil 10, an RFID reader 11, a data fusion controller 12, a high-frequency speaker 13, a multi-spectrum LED strobe light, a 4G communication unit 15, a solar charging panel 16, an ARM processor 17, an FPGA acceleration module 18, and a hierarchical decision module 19.

[0025] The deformable deceleration module is installed in the pavement embedded module, the vehicle detection module is installed on one side of the pavement embedded module, the sound and light warning module is installed on the side of the road through a column, and the vehicle detection module is installed in front of the sound and light warning module. The central control unit is fixed to the side of the facility through a waterproof chassis. The central control unit is connected to the pavement embedded module, the deformable deceleration module, the vehicle detection module and the sound and light warning module respectively through the RS485 bus 9. The pavement embedded module provides a stable installation foundation for the deformable deceleration module. The deformable deceleration module realizes the deceleration function through the deformation of the TPU airbag 4. The vehicle detection module identifies the vehicle and inputs the command into the central control unit for execution. The sound and light warning module realizes multi-dimensional linkage warning of the vehicle. like Figure 1 As shown, in the present invention, a pavement embedded module is installed on a pavement where a speed bump is required, and the pavement embedded module is connected and installed with a deformable speed bump module. The speed bump structure formed by the deformable speed bump module is used to achieve a deceleration effect on the vehicle, and an acoustic and visual warning module is installed on the side of the road section through a column to provide acoustic and visual warnings to passing vehicles and drivers. A central control unit is set on the side of the facility through a waterproof chassis, and the central control unit is used to control the road deceleration facility, identify the vehicle, and control the start of the deceleration facility to control the vehicle.

[0026] The pavement embedded module includes a pre-embedded frame 1, which is embedded in the installation groove of the speed-limited road. The pre-embedded frame 1 is made of aluminum alloy, and the inner wall of the installation groove is coated with a 1.2mm epoxy resin waterproof coating. The upper surface of the installation groove of the pre-embedded frame 1 is covered with a flexible substrate 2, and the surface of the flexible substrate 2 is molded with diamond-shaped anti-slip patterns. The diamond-shaped anti-slip patterns of the flexible substrate 2 are 2mm deep. A sealing component 3 is provided on the upper surface of the installation groove. The sealing component 3 includes 304 stainless steel anchor bolts and EPDM rubber sealing strips. The 304 stainless steel anchor bolts fix the EPDM rubber sealing strip to the installation groove. like Figure 2As shown, an installation groove is dug out according to the designed dimensions on the surface of the road where speed limit is required, and the embedded frame 1 is embedded in the installation groove. The embedded frame 1 is cast with high-strength aluminum alloy with a tensile strength of ≥300MPa. The dimensions of the installation groove are 3m long, 0.3m wide, and 0.15m deep, and a 1.2mm epoxy resin waterproof coating is applied to the inner wall of the installation groove. The flexible substrate 2 is made of a high-elasticity polyurethane composite material with a Shore hardness of 70A±5. The surface of the flexible substrate 2 is molded with diamond-shaped anti-slip grooves. The diamond-shaped anti-slip grooves have a groove depth of 2mm, a dry friction coefficient of 0.85, and a wet friction coefficient of 0.65. The processed flexible substrate 2 covers the embedded frame 1 and is fixedly connected to the installation groove through the EPDM rubber sealing strip of the sealing component 3 using 304 stainless steel anchor bolts to achieve waterproof sealing, ensure the structural stability of the road embedded module under all weather conditions, and effectively protect its internal pneumatic control unit and other measures.

[0027] The deformable deceleration module includes a TPU airbag 4, a pneumatic control unit, and a quick-release interface 5. The TPU airbags 4 are mounted in an array on the surface of the flexible substrate 2 of the road-mounted module. The arrayed TPU airbags 4 are connected to the same air circuit via the quick-release interface 5. The quick-release interface 5 uses a snap-on pneumatic pipeline connector. The surface of the TPU airbag 4 is molded with 2mm high-anti-slip bumps, and the surface of the TPU airbag 4 is coated with prismatic reflective film. A quick exhaust valve is provided at the bottom of the TPU airbag 4. The pneumatic control unit includes an oil-free silent air pump 6, a high-speed solenoid valve group 7, and an air pressure sensor 8. The pneumatic control unit is connected to the air circuit of the TPU airbag 4. like Figure 3 As shown, the deformable deceleration module is connected to the road surface embedded module, the surface of the TPU airbag 4 is molded with 2mm anti-slip bumps and coated with prismatic reflective film, the TPU airbag 4 is installed in an array on the surface of the flexible substrate 2 of the road surface embedded module, and the pneumatic control unit is arranged between the flexible substrate 2 and the embedded frame 1, and a quick exhaust valve is provided at the bottom of the TPU airbag 4, and the response time of the quick exhaust valve is ≤0.1 second. At the same time, the TPU airbag 4 is connected to the oil-free silent air pump 6, the high-speed solenoid valve group 7 and the air pressure sensor 8 through the air path. The output pressure of the oil-free silent air pump 6 is 0.1-0.3MPa, the flow rate is 30L / min, the response time of the high-speed solenoid valve group 7 is ≤0.05 second, and the air pressure sensor 8 is a high-precision sensor with an accuracy of ±1kPa. The air path of the TPU airbag 4 is connected with a polyurethane hose with a pressure resistance of 1.5MPa. The TPU airbag 4 is issued different instructions by the central control unit according to different situations to adapt to different states.

[0028] The vehicle detection module includes a two-stage buried coil 10, an RFID reader 11, and a data fusion controller 12. The two-stage buried coil 10 is installed in front of the sound and light warning module. The two-stage buried coil 10 is buried 5 cm deep in the ground. The distance between the first-stage coil and the second-stage coil in the two-stage buried coil 10 is greater than the vehicle's range of 3 seconds without exceeding the speed limit. The layout distance between the first-stage coil in the two-stage buried coil 10 and the road surface embedded module is D, which satisfies the following formula:

[0029] in: D is the distance from the first-stage coil to the front edge of the road surface embedded module, unit: m; The unit for the road design speed limit is m / s; Take 3.05m / s as the vehicle safety deceleration 2 , in line with AASHTO standards; is the total system response time; For safety margin, the average vehicle length is taken as 4.8m; = coil detection delay + data processing time + warning effective time; The two-stage buried coil 10 has a built-in ferrite shielding layer and is connected to an LDC0851 signal conditioning chip. The RFID reader 11 is mounted on a bracket. The directional antenna array of the RFID reader 11 is set at an elevation angle of 45 degrees. The data fusion controller 12 has a built-in hardware timer that synchronizes the data streams of the two-stage buried coil 10 and the RFID reader 11. like Figure 4 As shown, a vehicle detection module is set in front of the deformable deceleration module to collect vehicle information and process data. The two-stage buried coil 10 is buried at a depth of 5 cm in the speed-limited road surface, and the distance between the first-stage coil and the second-stage coil in the two-stage buried coil 10 is set to be greater than the vehicle's 3s travel without exceeding the speed limit, ensuring that the sound and light warning device has sufficient time to issue a warning. The layout distance between the first-stage coil of the two-stage buried coil 10 and the road surface embedded module is according to the formula:

[0030] Calculations show that the vehicle speed is calculated by the time difference between the vehicle running over the first and second coils of the two-stage buried coil 10. At the same time, the RFID reader 11 is installed using a bracket so that the directional antenna array of the RFID reader 11 is set at an elevation angle of 45° to identify special vehicle encrypted tags within 50 meters. The vehicle speed information of the two-stage buried coil 10 and the data of the RFID reader 11 are input into the data fusion controller 12. The data fusion controller 12 is based on the NXP S32G processor and ultimately generates a pass instruction packet containing the vehicle speed, vehicle model label, and timestamp, which is finally transmitted to the central control unit via optical fiber.

[0031] The sound and light warning module includes a high-frequency speaker 13, a multi-spectral LED strobe light 14, a 4G communication unit 15 and a solar charging panel 16. The high-frequency speaker 13 is fixedly mounted on the surface of the column. The high-frequency speaker 13 has a pre-stored voice command "speeding, please slow down". The multi-spectral LED strobe light 14 is fixedly connected to the side surface of the column through a bracket. The multi-spectral LED strobe light 14 is divided into a main warning band and a rain and fog mode. The main warning band of the multi-spectral LED strobe light 14 flashes in a 2Hz multi-band sequence, 630nm red light / 470nm blue light, combined with the main warning band of the multi-spectral LED strobe light 14. The brightness is 5000cd; the rain and fog mode of the multi-spectral LED strobe light 14 is switched to 590nm yellow light, with a brightness of 8000cd and a color temperature of 2200K. The surface of the multi-spectral LED strobe light 14 is integrated with a microprism array reflective layer. A 4G communication unit 15 is fixedly installed on the side surface of the mounting column of the sound and light warning module. After receiving the command of the central control unit, the 4G communication unit 15 pushes the warning information to the vehicle navigation. A solar charging panel 16 is fixedly installed on the top of the mounting column of the sound and light warning module to supply power to the sound and light warning module. like Figure 5 As shown, the sound and light warning module is installed on the side of the speed limit road through a column, wherein the high-frequency speaker 13 is fixedly installed on the surface of the column, adopts a 40W neodymium magnet drive unit, has a sound pressure level ≥90dB@1m, a sound beam angle of ±30°, and a built-in pre-stored voice command "speeding, please slow down". The multi-spectral LED strobe light 14 is installed on the side surface of the column. Under normal conditions, it flashes in a 2Hz multi-band sequence, 630nm red light / 470nm blue light, with a combined brightness of 5000cd. In rain and fog mode, it switches to 590nm yellow light, with a brightness of 8000cd and a color temperature of 2200K. A micro-prism array reflective layer is integrated on the surface of the lamp body with a reflection coefficient of 800cd / lx / m². The 4G communication unit 15 is installed on the other side of the column. The 4G communication unit 15 is connected to the Quectel The EC25 module receives instructions from the central control unit, pushes warning information to the vehicle navigation, triggers interface pop-ups and voice prompts, and forms a relevant warning in the car. A solar charging panel 16 is fixedly installed on the top of the column to power the sound and light warning module.

[0032] The central control unit includes an ARM processor 17, an FPGA acceleration module 18 and a hierarchical decision module 19. The ARM processor 17 receives relevant data from the data fusion device in the vehicle detection module in real time through the RS485 bus 9. The ARM processor 17 and the FPGA acceleration module 18 jointly process instructions to drive the hierarchical decision module 19 to execute a three-level response. The hierarchical decision module 19 includes three modes, namely: Mode 1, the vehicle speed is normal or it is a special vehicle, the high-speed solenoid valve group 7 is closed, and the TPU airbag 4 is kept flat; Mode 2, the vehicle speed exceeds 10% or more, the sound and light warning module is triggered and a 3-second countdown is started. If the secondary verification shows that the speed is still 10% or more, the oil-free silent air pump 6 starts to drive the TPU airbag 4 to inflate to a height of 5 cm, forming a primary speed bump, forcing the vehicle to slow down to a reasonable range; Mode 3, the vehicle speed exceeds 20% or more, the oil-free silent air pump 6 starts to drive the TPU airbag 4 to inflate to a height of 10 cm, forcing the vehicle to slow down to a reasonable range; like Figure 6 and Figure 7 As shown, the ARM processor 17 receives the relevant data of the vehicle detection module data fusion controller 12 in real time through the RS485 bus 9, runs the Linux system to complete the data fusion and protocol conversion, and realizes the vehicle speed signal filtering and TPU airbag 4 pressure PID closed-loop control through the FPGA acceleration module 18, and executes the three-level response logic through the hierarchical decision module 19 to adapt to different vehicle conditions.

[0033] The three modes of the hierarchical decision module 19 are as follows: In mode 1, the vehicle is traveling at a normal speed and is a special vehicle, such as an ambulance or fire truck. At this time, the high-speed solenoid valve group 7 is controlled to be closed to keep the TPU airbag 4 flat, ensuring that the vehicle passes without feeling; In mode 2, if the vehicle exceeds the speed limit by 10% or more, the multi-spectral LED strobe light 14 in the sound and light warning module will be triggered to flash, the 4G communication unit 15 will push the warning information to the vehicle navigation, and the high-frequency speaker 13 will broadcast the directional warning "Speeding, please slow down" and simultaneously start a 3-second countdown. If the vehicle speed is still 10% or more after the second verification, the FPGA acceleration module 18 will output a PWM signal with a duty cycle of 30%, driving the oil-free silent air pump 6 to start and inflate the TPU airbag 4 to a height of 5 cm, forming a primary speed bump, forcing the vehicle to slow down to a reasonable range. In mode 3, when the 3-second countdown ends and the vehicle speed exceeds 20%, the PWM duty cycle is increased to 100%, and the oil-free silent air pump 6 is driven to inflate the TPU airbag 4 with a pressure of 0.3 MPa to a height of 10 cm to force the vehicle to slow down to a reasonable range. The above instructions are transmitted to the pneumatic control unit in the deformable deceleration module through the RS485 bus 9 for execution.

[0034] The deformable deceleration module integrates a reset and maintenance unit. After a vehicle passes, the central control unit determines that the vehicle has left the site based on the signal from the air pressure sensor 8, triggering the high-speed solenoid valve group 7 to open the exhaust. The TPU airbag 4 collapses under its own weight, achieving a rapid reset in 1.5 seconds. The oil-free silent air pump 6 is activated to drive the air nozzle to remove surface sediment. After the vehicle leaves the site, the TPU airbag 4 is deflated and reset within 1.5 seconds, the oil-free silent air pump 6 sprays 0.6MPa airflow to clean the surface, the self-check unit monitors the air pressure fluctuations, reports any abnormalities to the platform, and the system returns to standby mode.

[0035] Working principle: When a vehicle enters a speed-limited section, the two-stage buried coil 10 performs real-time detection of the vehicle speed, and the RFID reader 11 simultaneously identifies the vehicle type. The data fusion controller integrates the information to generate a traffic instruction packet containing the vehicle speed and vehicle type and transmits it to the central control unit. The central control unit makes a priority judgment based on the instruction packet. If it is identified as a special vehicle or the speed is ≤ the speed limit, the mode 1 instruction is generated to keep the TPU airbag 4 flat. If the detected speed is greater than 10% of the speed limit and it is not a special vehicle, the mode 2 instruction is generated to start the warning and countdown. If the vehicle is still speeding ≥20% after the countdown, a mode 3 instruction is generated. All instructions are transmitted to the hierarchical decision module 19 via the RS485 bus 9 for execution. In mode 1, the high-speed solenoid valve group 7 is closed to keep the TPU airbag 4 flat to ensure that the vehicle passes without feeling. In mode 2, the multi-spectral LED strobe light 14 is triggered to flash in a 2Hz multi-band sequence, and the high-frequency speaker 13 plays the voice warning "Speeding, please slow down" in a directional manner. A 3-second countdown is started simultaneously. After the 3-second countdown, the vehicle speed is verified again. If the secondary verified speed is still ≥ the limit, the vehicle speed is reduced. When the speed value is 10%, the oil-free silent air pump 6 drives the TPU airbag 4 to inflate to a height of 5cm to form a primary speed bump for forced deceleration; in mode 3, when the countdown ends and the vehicle speed is greater than the speed limit by 20%, the TPU airbag 4 is controlled to rise to a height of 10cm to form a final speed bump for forced deceleration. After the vehicle leaves the site, the TPU airbag 4 collapses and resets under its own weight within 1.5 seconds; the oil-free silent air pump 6 is started simultaneously to drive the jet nozzle to spray 0.6MPa airflow to clean the surface. The self-inspection unit cyclically monitors air pressure fluctuations and reports any abnormalities to the operation and maintenance platform.

[0036] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A traffic control method based on intelligent road deceleration facilities, comprising the following steps: S1. Multi-source data acquisition and synchronization; real-time detection of vehicle speed via two-stage buried coils (10); simultaneous activation of the RFID reader (11) to scan the vehicle electronic tag and decode the vehicle model code; a data fusion controller (12) integrates the vehicle speed measured by the two-stage buried coils (10) with the vehicle model decoded by the RFID reader (11) and transmits the data to the central control unit; S2. Priority decision and mode selection; the central control unit makes a priority decision based on the fusion result: if it is identified as a special vehicle or the vehicle speed is ≤ the speed limit, a mode 1 instruction is generated; if the vehicle speed is detected to be greater than 10% of the speed limit and it is not a special vehicle, a mode 2 instruction is generated; if the vehicle speed is still greater than 20% of the speed limit after the countdown ends, a mode 3 instruction is generated. All instructions are transmitted to the hierarchical decision module (19) via the RS485 bus (9) for execution; S3. Hierarchical response and forced intervention; the ARM processor (17) and the FPGA acceleration module (18) jointly process instructions and drive the hierarchical decision module (19) to execute the three-level response; S4. Reset, recovery and maintenance. After the vehicle leaves the site, the central control unit receives feedback from the air pressure sensor (8), triggers the high-speed solenoid valve group (7) to fully open and exhaust, and the TPU airbag (4) collapses and resets by its own weight within 1-2 seconds; the oil-free silent air pump (6) is simultaneously started to drive the jet nozzle to spray 0.4MPa-0.8MPa airflow to clean the surface. The self-check unit cyclically monitors the air pressure fluctuation and reports to the operation and maintenance platform in case of abnormality.

2. The traffic control method according to claim 1, characterized in that: In the priority decision and mode selection: Mode 1, normal vehicle speed or special vehicle, close the high-speed solenoid valve group (7) to keep the TPU airbag (4) flat; Mode 2: If the vehicle speed is detected to be ≥10% of the speed limit, the multi-spectral LED strobe light (14) will be triggered to flash in a 2Hz multi-band sequence, and the high-frequency speaker (13) will play the voice warning "Speeding, please slow down" in a directional manner, and a 3-second countdown will be started simultaneously. If the vehicle speed is still ≥10% of the speed limit after the second verification, the oil-free silent air pump (6) will drive the TPU airbag (4) to inflate to a height of 4-6cm to form a primary speed bump for forced deceleration; Mode 3: When the vehicle speed is greater than the speed limit by 20% at the end of the countdown, the TPU airbag (4) is controlled to rise to a height of 8-12 cm to form a final speed bump and implement forced speed reduction.

3. An intelligent road deceleration facility, comprising a road surface embedded module, a deformable deceleration module, a vehicle detection module, an audible and visual warning module, and a central control unit, characterized in that: The deformable deceleration module is installed on the road surface embedded module, the vehicle detection module is installed on one side of the road surface embedded module, the sound and light warning module is installed on the side of the road through a column, and the vehicle detection module is installed in front of the sound and light warning module. The central control unit is fixed to the side of the facility through a waterproof chassis. The central control unit is connected to the road surface embedded module, the deformable deceleration module, the vehicle detection module and the sound and light warning module respectively through the RS485 bus (9). The road surface embedded module provides a stable installation base for the deformable deceleration module. The deformable deceleration module realizes the deceleration function through the deformation of the TPU airbag (4). The vehicle detection module identifies the vehicle and inputs the instruction into the central control unit for execution. The sound and light warning module realizes multi-dimensional linkage warning of the vehicle.

4. The intelligent road deceleration facility according to claim 1, characterized in that: The road surface embedded module comprises a pre-embedded frame (1), the pre-embedded frame (1) is pre-embedded in an installation groove of a speed-limited road, the pre-embedded frame (1) is made of aluminum alloy, the inner wall of the installation groove is coated with an epoxy resin waterproof coating, a flexible substrate (2) is covered above the installation groove of the pre-embedded frame (1), a diamond-shaped anti-skid pattern is molded on the surface of the flexible substrate (2), and the diamond-shaped anti-skid pattern of the flexible substrate (2) has a pattern depth of 1.5-3 mm, a sealing component (3) is provided on the upper surface of the installation groove, the sealing component (3) comprises a stainless steel anchor bolt and an EPDM rubber sealing strip, and the stainless steel anchor bolt fixes the EPDM rubber sealing strip to the installation groove.

5. The intelligent road deceleration facility according to claim 1, characterized in that: The deformable deceleration module comprises a TPU airbag (4), a pneumatic control unit and a quick-release interface (5); the TPU airbag (4) is array-mounted on the surface of the flexible base (2) of the road surface embedded module; the array-mounted TPU airbags (4) are connected to the same air circuit via the quick-release interface (5); the quick-release interface (5) adopts a snap-on pneumatic pipeline connector; the surface of the TPU airbag (4) is molded with 1.5-3mm high anti-slip bumps; the surface of the TPU airbag (4) is coated with a prismatic reflective film; a quick exhaust valve is provided at the bottom of the TPU airbag (4); the pneumatic control unit comprises an oil-free silent air pump (6), a high-speed solenoid valve group (7) and an air pressure sensor (8); the pneumatic control unit is connected to the air circuit of the TPU airbag (4).

6. The intelligent road deceleration facility according to claim 1, characterized in that: The vehicle detection module comprises a two-stage buried coil (10), an RFID reader (11) and a data fusion controller (12), wherein the two-stage buried coil (10) is installed in front of the sound and light warning module, and the two-stage buried coil (10) is buried in the ground at a depth of 4-8 cm. The distance between the first-stage coil and the second-stage coil in the two-stage buried coil (10) is greater than the travel distance of the vehicle at a speed limit of 3 seconds. The layout distance between the first-stage coil in the two-stage buried coil (10) and the road surface embedded module is D, which satisfies the following formula: ; Where: D is the distance from the first-stage coil to the front edge of the road surface embedded module (unit: m); is the design speed limit of the road (unit: m / s); decelerate the vehicle for safety; is the total system response time; is a safety margin; = coil detection delay + data processing time + warning effective time; The two-stage buried coil (10) has a built-in ferrite shielding layer, the two-stage buried coil (10) is connected to an LDC0851 signal conditioning chip, the RFID reader (11) is mounted by a bracket, the directional antenna array of the RFID reader (11) has an elevation angle of 45°, and the data fusion controller (12) has a built-in hardware timer that is synchronized with the data stream of the two-stage buried coil (10) and the RFID reader (11).

7. The intelligent road deceleration facility according to claim 1, characterized in that: The sound and light warning module comprises a high-frequency speaker (13), a multi-spectrum LED strobe light (14), a 4G communication unit (15) and a solar charging panel (16). The high-frequency speaker (13) is fixedly mounted on the surface of the column. The high-frequency speaker (13) has a pre-stored voice command "overspeed, please slow down". The multi-spectrum LED strobe light (14) is fixedly connected to the side surface of the column through a bracket. The multi-spectrum LED strobe light (14) is divided into a main warning band and a rain and fog mode. The main warning band of the multi-spectrum LED strobe light (14) flashes in a 2Hz multi-band sequence, 630nm red light / 470nm blue light. light, with a combined brightness of 5000 cd; the rain and fog mode of the multi-spectral LED strobe light (14) is switched to 590 nm yellow light, with a brightness of 8000 cd and a color temperature of 2200 K; a micro-prism array reflective layer is integrated on the surface of the multi-spectral LED strobe light (14); a 4G communication unit (15) is fixedly installed on the side surface of the mounting column of the sound and light warning module; the 4G communication unit (15) pushes warning information to the vehicle navigation after receiving instructions from the central control unit; a solar charging panel (16) is fixedly installed on the top of the mounting column of the sound and light warning module; the solar charging panel (16) supplies power to the sound and light warning module.

8. The intelligent road deceleration facility according to claim 1, characterized in that: The central control unit includes an ARM processor (17), an FPGA acceleration module (18) and a hierarchical decision module (19). The ARM processor (17) receives relevant data from the data fusion device in the vehicle detection module in real time through the RS485 bus (9). The ARM processor (17) and the FPGA acceleration module (18) cooperate to process instructions and drive the hierarchical decision module (19) to execute a three-level response. The hierarchical decision module (19) includes three modes, namely: Mode 1: For vehicles with normal speed or special vehicles, the high-speed solenoid valve group (7) is closed to keep the TPU airbag (4) flat; Mode 2: If the vehicle speed exceeds the speed limit by ≥10%, the sound and light warning module will be triggered and a 3-second countdown will be started. If the vehicle speed is still exceeded by ≥10% after the second verification, the oil-free silent air pump (6) will start to drive the TPU airbag (4) to inflate to a height of 4-6cm, forming a primary speed bump and forcing the vehicle to slow down to a reasonable range; Mode 3: If the vehicle speed exceeds the speed limit by ≥20%, the oil-free silent air pump (6) starts to drive the TPU airbag (4) to inflate to a height of 8-12 cm, forcing the vehicle to slow down to a reasonable range.

9. The intelligent road deceleration facility according to claim 3, characterized in that: The deformable deceleration module is integrated with a reset and maintenance unit. After the vehicle passes, the central control unit determines that the vehicle has left the site based on the signal from the air pressure sensor (8), triggers the high-speed electromagnetic valve group (7) to open the exhaust, and the TPU airbag (4) collapses under its own weight to achieve a rapid reset in 1-2 seconds, and starts the oil-free silent air pump (6) to drive the air nozzle to remove surface mud and sand.

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