Intelligent road speed reduction facility and control method thereof

Abstract

This invention relates to the field of road speed reduction technology, specifically disclosing an intelligent road speed reduction device and its control method, including a road surface embedded module, a deformable speed reduction module, a vehicle detection module, an audible and visual warning module, and a central control unit. This intelligent road speed reduction device and its control method employs an array-type TPU airbag combined with a pneumatic control unit. Through modular closed-loop adjustment, the TPU airbag height is rapidly inflated and deflated, automatically activating when a vehicle enters a speed-limited area. This significantly improves response efficiency and supports convenient maintenance of faulty components. When compliant vehicles and special vehicles pass, the system automatically identifies and maintains the speed bump flat, ensuring uninterrupted passage. When a speeding vehicle is detected, the system uses a three-level response mechanism of "audible and visual warning → flexible inflation → forced intervention," enabling the driver to clearly perceive the warning information and slow down in time.

Description

Technical Field

[0001] This invention relates to the field of road traffic control technology, specifically to an intelligent road deceleration device and its control method. Background Technology

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

[0003] Currently, the most commonly used traditional road speed reduction facilities are fixed rubber or cement speed bumps. However, these facilities rely on rigid or semi-rigid structural designs, forcing all vehicles to run over them indiscriminately. This causes bumps when low-speed compliant vehicles or special vehicles such as ambulances and fire trucks pass through, reducing traffic efficiency and comfort. They also cannot adjust the intervention intensity according to vehicle speed or vehicle type, making it difficult to achieve flexible "early warning-graded deceleration" control in special scenarios such as accident-prone curves in mountainous areas or hospitals. In addition, although existing variable speed reduction facilities such as hydraulic lifting systems attempt dynamic adjustment, their complex mechanical structures, high maintenance costs, and poor durability make it difficult to coordinate efficiently with intelligent transportation systems, ultimately resulting in a difficulty in balancing safety control and traffic efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent road deceleration facility and its control method to solve the problems mentioned in the background art, such as indiscriminate forced deceleration, inability to provide early deceleration warnings, lack of dynamic response capabilities, and poor adaptability to special scenarios of traditional road deceleration facilities.

[0005] To achieve the above objectives, the present invention provides the following technical solution: 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 through two-level buried coils; synchronous activation of RFID reader to scan vehicle electronic tag and decode vehicle model code; data fusion controller integrates vehicle speed measured by two-level buried coils and vehicle model interpretation by RFID reader and transmits the data to central control unit; S2. Priority Decision and Mode Selection: The central control unit makes priority judgments based on the fusion results: if it is identified as a special vehicle or the vehicle speed is ≤ speed limit, it generates a mode 1 instruction; if the vehicle speed is detected to be > speed limit by 10% and it is not a special vehicle, it generates a mode 2 instruction; if the vehicle speed is still > speed limit by 20% after the countdown ends, it generates a mode 3 instruction. All instructions are transmitted to the hierarchical decision module via RS485 bus for execution. S3. Tiered Response and Forced Intervention: The ARM processor and FPGA acceleration module work together to process instructions, driving the tiered 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 within 1-2 seconds due to its own weight. Simultaneously, the oil-free silent air pump is started to drive the jet nozzle to spray 0.4MPa-0.6MPa airflow to clean the surface. The self-test unit cyclically monitors air pressure fluctuations and reports any abnormalities to the operation and maintenance platform.

[0006] As a preferred option, in the priority decision and mode selection: Mode 1, for normal vehicle speed or special vehicles, closes the high-speed solenoid valve group to keep the TPU airbag flat; Mode 2, if the vehicle speed is ≥ 10% of the speed limit, trigger the multi-spectral LED strobe light to flash in a 2Hz multi-band sequence, and play the "Speeding, please slow down" voice warning in a directional manner with a high-frequency speaker, and start a 3-second countdown simultaneously. If the vehicle speed is still ≥ 10% of the speed limit after a second verification, the oil-free silent air pump drives 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 countdown ends and the vehicle speed is 20% higher than the speed limit, the TPU airbag is raised to a height of 8-12cm to form a final speed bump and force a reduction in speed. By adopting the above technical solution and using the above steps, the driving status of the vehicle can be intelligently detected, and corresponding commands can be output to make the vehicle slow down or pass normally.

[0007] This invention also provides an intelligent road deceleration facility, including a road surface embedded module, a deformable deceleration module, a vehicle detection module, an audible and visual warning module, and a central control unit. 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 audible and visual warning module is installed on the side of the road via a column and is installed in front of the audible and visual warning module, and the central control unit is fixed to the side of the facility via a waterproof enclosure. The central control unit is connected to the road surface embedded module, the deformable deceleration module, the vehicle detection module, and the audible and visual warning module via an RS485 bus. The road surface embedded module provides a stable installation foundation for the deformable deceleration module. The deformable deceleration module achieves deceleration through the deformation of a TPU airbag. The vehicle detection module identifies vehicles and inputs commands into the central control unit for execution. The audible and visual warning module provides multi-dimensional linkage warnings to vehicles. Preferably, the road surface embedding module includes a pre-embedded frame, which is pre-embedded in the installation groove of the speed-limited road. The pre-embedded frame is made of aluminum alloy. The inner wall of the installation groove is coated with an epoxy resin waterproof coating. A flexible substrate covers the installation groove of the pre-embedded frame. The surface of the flexible substrate is molded with a diamond-shaped anti-slip pattern with a depth of 1.5-3mm. A sealing component is provided on the upper surface of the installation groove. The sealing component includes a stainless steel anchor bolt and a EPDM rubber sealing strip. The stainless steel anchor bolt fixes the EPDM rubber sealing strip to the installation groove.

[0008] Using the above technical solution, the deformable deceleration module can be supported and installed by using 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 arrayed and mounted on the flexible substrate surface of the road embedding module. The arrayed TPU airbags are connected in the same air circuit through the quick-release interface, which adopts a snap-on pneumatic pipeline connector. The surface of the TPU airbag is molded with 2mm high anti-slip protrusions. The surface of the TPU airbag is coated with a prism-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, the inflation and deflation of the TPU airbags installed in the deformable deceleration module can form deceleration structures of different heights on the road surface.

[0011] Preferably, the vehicle detection module includes two-stage buried coils, an RFID reader / writer, and a data fusion controller. The two-stage buried coils are installed in front of the audible and visual warning module, buried 4-6 cm deep in the ground. The distance between the first-stage coil and the second-stage coil is greater than the distance traveled by the vehicle at a speed not exceeding 3 seconds. The deployment distance between the first-stage coil and the road embedded module is D, satisfying the following formula:

[0012] in: D is the distance from the first-stage coil to the leading edge of the road surface embedded module; Design speed limits for roads; To reduce vehicle speed for safety; This refers to the total system response time. For safety margin; = Coil detection delay + data processing time + warning activation 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 mounted on a bracket. The directional antenna array of the RFID reader is set at an elevation angle of 45°. The data fusion controller has a built-in hardware timer that synchronizes with the data flow of the two-stage buried coil and the RFID reader.

[0013] Using 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 audio-visual warning module includes a high-frequency speaker, a multispectral 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, and the high-frequency speaker has a pre-stored voice command "Speeding, please slow down". The multispectral LED strobe light is fixedly connected to the side surface of the column via a bracket. The multispectral LED strobe light has a main warning band and a rain / fog mode. The main warning band of the multispectral LED strobe light flashes with a 2Hz multi-band sequence, using 630nm red light / 470nm blue light, with a combined brightness of 5000cd. The rain / fog mode of the multispectral LED strobe light switches to 590nm yellow light, with a brightness of 8000cd and a color temperature of 2200K. The surface of the multispectral LED strobe light integrates a microprism array reflective layer. The 4G communication unit is fixedly mounted on the side surface of the mounting column of the audio-visual warning module. After receiving instructions from the central control unit, the 4G communication unit pushes warning information to the vehicle navigation system. A solar charging panel is fixedly mounted on the top of the mounting column of the audio-visual warning module, and the solar charging panel supplies power to the audio-visual warning module.

[0015] Using the above technical solution, the sound and light warning module can generate sound and light warnings to provide drivers with multi-dimensional warnings.

[0016] Preferably, the central control unit includes an ARM processor, an FPGA acceleration module, and a hierarchical decision-making module. The ARM processor receives relevant data from the data fusion unit within the vehicle detection module in real time via an RS485 bus. The ARM processor and the FPGA acceleration module collaboratively process instructions to drive the hierarchical decision-making module to execute a three-level response. The hierarchical decision-making module includes three modes: Mode 1, for vehicles traveling at normal speeds and special vehicles, the high-speed solenoid valve group is closed to keep the TPU airbag flat; Mode 2: If the vehicle speed exceeds the speed limit by ≥10%, the sound and light warning module is triggered and a 3-second countdown begins. If the speed still exceeds the speed limit by ≥10% after a second verification, the oil-free silent air pump is activated 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 speed exceeds the limit by ≥20%, the oil-free silent air pump will start and drive the TPU airbag to inflate to a height of 8-12cm, forcing the vehicle to slow down to a reasonable range.

[0017] By adopting the above technical solution, the hierarchical decision-making module can execute different deceleration commands according to the actual situation of the vehicle.

[0018] Preferably, the deformable deceleration module integrates 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 under its own weight to achieve rapid reset in 1-2 seconds. The oil-free silent air pump is started 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 by utilizing the reset and maintenance unit set in the deformable deceleration module.

[0020] Compared with the prior art, the beneficial effects of the present invention are: the intelligent road deceleration device and its control method: 1. This invention employs an array-type TPU airbag combined with a pneumatic control unit. Through modular closed-loop adjustment, the TPU airbag height is rapidly inflated and deflated, automatically activating when the vehicle enters a speed-limited area. This significantly improves response efficiency and supports convenient maintenance of faulty components. When compliant vehicles and special vehicles pass, the system automatically identifies and maintains the speed bump flat, ensuring uninterrupted passage. When a speeding vehicle is detected, the system uses a three-level response mechanism of "audible and visual warning, flexible inflation, and forced intervention," enabling the driver to clearly perceive warning information and slow down in time. If the vehicle continues to exceed the speed limit, the deformable deceleration module precisely inflates to form a speed bump, allowing the driver to intuitively judge the height difference between the vehicle and the speed bump and the intensity of intervention, effectively avoiding the risk of sudden braking and loss of control. In rainy or foggy conditions, multi-spectral warnings and automatic drainage cleaning functions continuously ensure high visibility and anti-slip performance, allowing the driver to quickly identify changes in road conditions. 2. This invention utilizes a deformable deceleration module and a multi-level vehicle detection module for coordinated control to intelligently distinguish between normal and speeding vehicles while ensuring the normal passage of special vehicles. This allows for precise control of speeding behavior. Through intelligent hierarchical control, road safety is ensured while minimizing interference with compliant vehicles, achieving a precise balance between safety and efficiency. Furthermore, based on multi-source data fusion and verification technology, it coordinates directional audible and visual warnings with real-time communication pushes to form a multi-level response mechanism of audible and visual warnings and physical intervention, effectively improving the deceleration effect of speeding vehicles. The waterproof and sealed design of the pre-embedded frame ensures 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 for special vehicles, while the rapid airbag reset and self-cleaning function reduce maintenance costs. Attached Figure Description

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

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

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1-7 This invention provides a technical solution: an intelligent road deceleration device and its control method, comprising a pre-embedded frame 1, a flexible base 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, a 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 multispectral 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 on the road surface embedded module, the vehicle detection module is installed on one side of the road surface embedded module, and the audible and visual warning module is installed on the side of the road via a column, with the vehicle detection module installed in front of the audible and visual warning module. The central control unit is fixed to the side of the facility via a waterproof enclosure. The central control unit is connected to the road surface embedded module, the deformable deceleration module, the vehicle detection module, and the audible and visual warning module via RS485 bus 9. The road surface embedded module provides a stable installation foundation for the deformable deceleration module. The deformable deceleration module achieves deceleration 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 audible and visual warning module provides multi-dimensional linkage warnings for the vehicle. like Figure 1 As shown, in this invention, the road surface embedding module is installed on the road surface where speed bumps are required, and the road surface embedding module is connected and installed with the deformable speed reduction module. The speed bump structure formed by the deformable speed reduction module achieves the speed reduction effect on vehicles. On the side of the road section, an audible and visual warning module is installed through a column to provide audible and visual warnings to passing vehicles and drivers. A central control unit is set on the side of the facility through a waterproof enclosure. The central control unit controls the road speed reduction facility, identifies vehicles, and controls the activation of the speed reduction facility to control the vehicles.

[0026] The road surface embedding module includes a pre-embedded frame 1, which is pre-embedded in the installation groove of the speed-limited road. The pre-embedded frame 1 is made of aluminum alloy. The inner wall of the installation groove is coated with a 1.2mm epoxy resin waterproof coating. A flexible substrate 2 covers the installation groove of the pre-embedded frame 1. The surface of the flexible substrate 2 is molded with a diamond anti-slip pattern with a depth of 2mm. A sealing component 3 is set on the upper surface of the installation groove. The sealing component 3 includes a 304 stainless steel anchor bolt and a EPDM rubber sealing strip. The 304 stainless steel anchor bolt fixes the EPDM rubber sealing strip to the installation groove. like Figure 2As shown, an installation groove is excavated on the road surface where speed limits are required, according to the design dimensions. The pre-embedded frame 1 is pre-embedded in the installation groove. The pre-embedded frame 1 is made of high-strength aluminum alloy casting with a tensile strength ≥300MPa. The dimensions of the installation groove are 3m long, 0.3m wide, and 0.15m deep. A 1.2mm epoxy resin waterproof coating is applied to the inner wall of the installation groove. The flexible substrate 2 is made of high-elasticity polyurethane composite material with a Shore hardness of 70A±5. A diamond-shaped anti-slip pattern is molded on the surface of the flexible substrate 2. The depth of the diamond-shaped anti-slip pattern is 2mm. The dry friction coefficient is 0.85, and the wet friction coefficient is 0.65. The processed flexible substrate 2 covers the pre-embedded frame 1 and is fixedly connected to the installation groove by the EPDM rubber sealing strip of the sealing component 3 using 304 stainless steel anchor bolts to achieve waterproof sealing. This ensures the structural stability of the road embedded module under all weather conditions and also effectively protects 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 arrayed and installed on the surface of the flexible base 2 of the road embedding module. The arrayed TPU airbags 4 are connected in the same air circuit through 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 2mm high anti-slip protrusions. The surface of the TPU airbag 4 is coated with a prism-level reflective film. A quick exhaust valve is set 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 embedding module. The surface of the TPU airbag 4 is molded with 2mm anti-slip protrusions and coated with prism-grade reflective film. The TPU airbags 4 are arrayed and installed on the surface of the flexible base 2 of the road surface embedding module. The pneumatic control unit is set between the flexible base 2 and the pre-embedded frame 1. A quick exhaust valve is set at the bottom of the TPU airbag 4. The response time of the quick exhaust valve is ≤0.1 seconds. 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 circuit. The output pressure of the oil-free silent air pump 6 is 0.1-0.3MPa and the flow rate is 30L / min. The response time of the high-speed solenoid valve group 7 is ≤0.05 seconds. The air pressure sensor 8 is a high-precision sensor with an accuracy of ±1kPa. The air circuit of the TPU airbag 4 is connected by a polyurethane hose with a pressure resistance of 1.5MPa. The TPU airbag 4 is issued different commands by the central control unit according to different situations to adapt to different states.

[0028] The vehicle detection module includes two-stage buried coils 10, an RFID reader / writer 11, and a data fusion controller 12. The two-stage buried coils 10 are installed in front of the audible and visual warning module, buried 5cm deep in the ground. The distance between the first-stage coil and the second-stage coil in the two-stage buried coils 10 is greater than the distance traveled by the vehicle at a speed not exceeding 3 seconds. The deployment distance between the first-stage coil in the two-stage buried coils 10 and the road embedded module is D, satisfying the following formula:

[0029] in: D is the distance from the first-stage coil to the leading edge of the road surface embedded module, in meters; The unit for road design speed limits is m / s; For safe vehicle deceleration, a speed of 3.05 m / s² is used. 2 It complies with AASHTO standards; This refers to the total system response time. To provide a safety margin, the average vehicle length is taken as 4.8m; = Coil detection delay + data processing time + warning activation time; The two-stage buried coil 10 has a built-in ferrite shielding layer. The two-stage buried coil 10 is connected to the 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°. The data fusion controller 12 has a built-in hardware timer that synchronizes with the data flow of the two-stage buried coil 10 and the RFID reader 11. like Figure 4 As shown, a vehicle detection module is installed in front of the deformable deceleration module to collect and process vehicle information. Two-stage buried coils 10 are buried at a depth of 5cm on the speed-limited road surface. The distance between the first and second stage coils of the two-stage buried coils 10 is set to be greater than the distance the vehicle travels without exceeding the speed limit for 3 seconds, ensuring sufficient time for the audible and visual warning device to issue a warning. The installation distance between the first stage coil of the two-stage buried coils 10 and the road surface embedded module is determined according to the formula:

[0030] The vehicle speed is calculated by the time difference between the first and second coils of the two-stage buried coil 10. At the same time, the RFID reader 11 is installed by the bracket, with the directional antenna array of the RFID reader 11 set at an elevation angle of 45° to identify the encrypted tags of special vehicles 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 finally generates a passage instruction packet containing vehicle speed, vehicle type tag and timestamp, which is finally transmitted to the central control unit through 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, and 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 via a bracket. The multi-spectral LED strobe light 14 has a main warning band and a rain / fog mode. The main warning band of the multi-spectral LED strobe light 14 flashes in a 2Hz multi-band sequence, using 630nm red light / 470nm blue light. The brightness is 5000cd; the rain and fog mode of the multispectral LED strobe light 14 switches to 590nm yellow light with a brightness of 8000cd and a color temperature of 2200K. The surface of the multispectral LED strobe light 14 integrates 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 instructions from 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, and the solar charging panel 16 provides 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-limited road via a pillar. A high-frequency speaker 13 is fixedly mounted on the pillar surface, using a 40W neodymium magnet driver unit with a sound pressure level ≥90dB@1m and a beam angle of ±30°. It also has a pre-stored voice command "Speeding, please slow down." A multispectral LED strobe light 14 is installed on the side surface of the pillar, flashing in a 2Hz multi-band sequence under normal conditions, using 630nm red light / 470nm blue light with a combined brightness of 5000cd. In rain / fog mode, it switches to 590nm yellow light with a brightness of 8000cd and a color temperature of 2200K. A microprism array reflective layer is integrated on the light body surface, with a reflectivity of 800cd / lx / m². A 4G communication unit 15 is installed on the other side of the pillar. The 4G communication unit 15 communicates via Quectel... The EC25 module receives instructions from the central control unit, pushes warning information to the vehicle navigation system, triggers interface pop-ups and voice prompts, forming a relevant warning within the vehicle. A solar charging panel 16 is fixedly installed on the top of the pillar, which powers 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 unit in the vehicle detection module in real time via the RS485 bus 9. The ARM processor 17 and the FPGA acceleration module 18 work together to process instructions and drive the hierarchical decision module 19 to execute a three-level response. The hierarchical decision module 19 includes three modes: Mode 1, for vehicles with normal speed and special vehicles, the high-speed solenoid valve group 7 is closed to keep the TPU airbag 4 flat; Mode 2, for vehicles exceeding the speed limit by ≥10%, the sound and light warning module is triggered and a 3-second countdown is started. If the speed is still ≥10% after a second verification, the oil-free silent air pump 6 is activated to inflate the TPU airbag 4 to a height of 5cm, forming a primary speed bump and forcing the vehicle to slow down to a reasonable range; Mode 3, for vehicles exceeding the speed limit by ≥20%, the oil-free silent air pump 6 is activated to inflate the TPU airbag 4 to a height of 10cm, forcing the vehicle to slow down to a reasonable range. like Figure 6 and Figure 7 As shown, the ARM processor 17 receives relevant data from the vehicle detection module data fusion controller 12 in real time through the RS485 bus 9, runs the Linux system to complete data fusion and protocol conversion, and implements vehicle speed signal filtering and TPU airbag 4 pressure PID closed-loop control through the FPGA acceleration module 18. It also executes 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, when the vehicle is traveling at a normal speed or is a special vehicle, such as an ambulance or fire truck, the high-speed solenoid valve group 7 is closed to keep the TPU airbag 4 flat and ensure that the vehicle passes through without being touched. In Mode 2, if the vehicle speed exceeds the speed limit by ≥10%, the multispectral LED strobe light 14 in the sound and light warning module will first be triggered to flash. The 4G communication unit 15 will push the warning information to the vehicle navigation system. The high-frequency speaker 13 will broadcast a directional warning of "speeding, please slow down" and start a 3-second countdown. If the vehicle speed still exceeds the speed limit by ≥10% after a second verification, the FPGA acceleration module 18 will output a PWM signal with a duty cycle of 30% to drive the oil-free silent air pump 6 to start and drive the TPU airbag 4 to inflate to a height of 5cm, forming a primary speed bump and forcing the vehicle to slow down to a reasonable range. In mode 3, when the 3-second countdown ends and the vehicle speed exceeds the limit by ≥20%, the PWM duty cycle is increased to 100%, driving the oil-free silent air pump 6 to inflate the TPU airbag 4 to a height of 10cm with a pressure of 0.3MPa, forcibly reducing the speed and reducing the vehicle speed to a reasonable range. The above instructions are transmitted to the pneumatic control unit in the deformable deceleration module via RS485 bus 9 for execution.

[0034] The deformable deceleration module integrates 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 solenoid valve group 7 to open the exhaust, and the TPU airbag 4 achieves rapid reset in 1.5 seconds by collapsing under its own weight. The oil-free silent air pump 6 is started to drive the jet nozzle to remove surface mud and sand. After the vehicle leaves the site, the TPU airbag 4 deflates and resets within 1.5 seconds, the oil-free silent air pump 6 sprays 0.6MPa airflow to clean the surface, the self-test unit monitors 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 vehicle speed is detected in real time by two-stage buried coils 10, and the vehicle type is identified synchronously by RFID reader 11. The data fusion controller integrates the information to generate a passage instruction package containing vehicle speed and vehicle type and transmits it to the central control unit. The central control unit performs priority judgment based on the instruction package. If it is identified as a special vehicle or the vehicle speed is ≤ speed limit, a mode 1 instruction is generated to keep the TPU airbag 4 flat. If a vehicle speed > speed limit by 10% and is not a special vehicle is detected, a mode 2 instruction is generated to start the warning and countdown. If the speed exceeds the limit by ≥20% by the end of the countdown, a Mode 3 command is generated. All commands are transmitted via RS485 bus 9 to the hierarchical decision module 19 for execution. In Mode 1, the high-speed solenoid valve group 7 is closed to keep the TPU airbag 4 flat, ensuring seamless vehicle passage. In Mode 2, the multispectral LED strobe light 14 is triggered to flash in a 2Hz multi-band sequence, and the high-frequency speaker 13 plays a directional "Speeding, please slow down" voice warning. A 3-second countdown is started simultaneously. After the 3-second countdown, the vehicle speed is verified a second time. If the speed is still ≥20% after the second verification, the command will be executed. At speed limit 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 within 1.5 seconds due to its own weight; simultaneously, the oil-free silent air pump 6 is activated to drive the jet nozzle to spray 0.6MPa airflow to clean the surface, and the self-test unit cyclically monitors air pressure fluctuations and reports any abnormalities to the operation and maintenance platform.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these 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 through two-level buried coils (10); synchronous activation of RFID reader (11) to scan vehicle electronic tag and decode vehicle model code; data fusion controller (12) integrates vehicle speed measured by two-level buried coils (10) with RFID reader (11) interpreting vehicle model and transmitting data to central control unit; S2. Priority decision and mode selection; The central control unit makes priority judgment based on the fusion result: If it is identified as a special vehicle or the vehicle speed is ≤ speed limit, it generates mode 1 instruction; If the vehicle speed is detected to be > speed limit 10% and it is not a special vehicle, it generates mode 2 instruction; If the vehicle speed is still > speed limit 20% after the countdown ends, it generates mode 3 instruction. All instructions are transmitted to the hierarchical decision module (19) via RS485 bus (9) for execution. In the aforementioned priority decision-making and mode selection: Mode 1, for normal vehicle speed or special vehicles, close the high-speed solenoid valve group (7) to keep the TPU airbag (4) flat; Mode 2, if the vehicle speed is ≥ 10% of the speed limit, trigger the multi-spectral LED strobe light (14) 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, and simultaneously starts a 3-second countdown. If the vehicle speed is still ≥ 10% of the speed limit after a second verification, the oil-free silent air pump (6) drives the TPU airbag (4) to inflate to a height of 4-6cm to form a primary speed bump for forced speed reduction; Mode 3, when the countdown ends and the vehicle speed is 20% higher than the speed limit, the TPU airbag (4) is raised to a height of 8-12cm to form a final speed bump and force a reduction in speed; S3. Tiered Response and Forced Intervention; The ARM processor (17) and FPGA acceleration module (18) collaboratively process instructions to drive the tiered decision-making module (19) to execute a three-level response. S4. Reset and maintenance: After the vehicle leaves the site, the central control unit receives feedback from the air pressure sensor (8) and triggers the high-speed solenoid valve group (7) to fully open for exhaust. The TPU airbag (4) collapses and resets within 1-2 seconds due to its own weight. Simultaneously, the oil-free silent air pump (6) is started to drive the jet nozzle to spray 0.4MPa-0.8MPa airflow to clean the surface. The self-test unit cyclically monitors air pressure fluctuations and reports any abnormalities to the operation and maintenance platform.

2. An intelligent road deceleration device for implementing the traffic control method of claim 1, comprising a road surface embedding 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 embedding module, the vehicle detection module is installed on one side of the road surface embedding module, the sound and light warning module is installed on the side of the road via 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 via a waterproof enclosure. The central control unit is connected to the road surface embedding module, the deformable deceleration module, the vehicle detection module and the sound and light warning module via an RS485 bus (9). The road surface embedding module provides a stable installation foundation for the deformable deceleration module. The deformable deceleration module achieves 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 for the vehicle.

3. The intelligent road speed reduction device according to claim 2, characterized in that: The road surface embedding module includes a pre-embedded frame (1), which is pre-embedded in the installation groove of the 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) covers the installation groove of the pre-embedded frame (1). The surface of the flexible substrate (2) is molded with a diamond anti-slip pattern. The diamond anti-slip pattern of the flexible substrate (2) has a depth of 1.5-3mm. A sealing component (3) is provided on the upper surface of the installation groove. The sealing component (3) includes a stainless steel anchor bolt and a EPDM rubber sealing strip. The stainless steel anchor bolt fixes the EPDM rubber sealing strip to the installation groove.

4. The intelligent road speed reduction device according to claim 2, characterized in that: The deformable deceleration module includes a TPU airbag (4), a pneumatic control unit, and a quick-release interface (5). The TPU airbags (4) are arrayed and installed on the surface of the flexible base (2) of the road embedding module. The arrayed TPU airbags (4) are connected in the same air circuit through 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 protrusions. The surface of the TPU airbag (4) is coated with a prism-grade 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).

5. The intelligent road speed reduction device according to claim 2, characterized in that: The vehicle detection module includes two-stage buried coils (10), an RFID reader (11), and a data fusion controller (12). The two-stage buried coils (10) are installed in front of the sound and light warning module. The two-stage buried coils (10) are 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 coils (10) is greater than the distance traveled by the vehicle at a speed not exceeding 3 seconds. The laying distance between the first-stage coil in the two-stage buried coils (10) and the road embedded module is D, which satisfies the following formula: ； in: The distance from the first-stage coil to the leading edge of the road surface embedding module is given in units of: ); Speed ​​limits for road design (unit: ); To reduce vehicle speed for safety; This refers to the total system response time. For safety margin; = Coil detection delay + data processing time + warning activation time; The two-stage buried coil (10) has a built-in ferrite shielding layer. The two-stage buried coil (10) is connected to the 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°. The data fusion controller (12) has a built-in hardware timer that synchronizes with the data flow of the two-stage buried coil (10) and the RFID reader (11).

6. The intelligent road speed reduction device according to claim 2, characterized in that: 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 installed 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 / fog mode. The main warning band of the multi-spectral LED strobe light (14) flashes in a 2Hz multi-band sequence, with 630nm red light / 470nm blue light. The light has a combined brightness of 5000 cd; the rain and fog mode of the multispectral LED strobe light (14) is switched to 590nm yellow light with a brightness of 8000 cd and a color temperature of 2200K. The surface of the multispectral LED strobe light (14) is integrated with a micro prism 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 instruction from 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. The solar charging panel (16) supplies power to the sound and light warning module.

7. The intelligent road speed reduction device according to claim 2, 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 controller in the vehicle detection module in real time via an RS485 bus (9). The ARM processor (17) and the FPGA acceleration module (18) work together to process instructions, driving the hierarchical decision module (19) to execute a three-level response. The hierarchical decision module (19) includes three modes: Mode 1, for vehicles with normal speed and 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 is triggered and a 3-second countdown is started. If the speed is still exceeded by ≥10% after a second verification, the oil-free silent air pump (6) is started 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 limit by ≥20%, the oil-free silent air pump (6) will start and drive the TPU airbag (4) to inflate to a height of 8-12cm, forcing the vehicle to slow down to a reasonable range.

8. The intelligent road speed reduction device according to claim 4, characterized in that: The deformable deceleration module integrates 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 solenoid valve group (7) to open the exhaust, and the TPU airbag (4) collapses under its own weight to achieve rapid reset in 1-2 seconds. The oil-free silent air pump (6) is started to drive the jet nozzle to remove surface mud and sand.

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