Intelligent geomagnetic induction type road marking detection device

Abstract

This invention relates to an intelligent geomagnetic induction road marking detection device, and specifically to the technical field of intelligent transportation infrastructure detection. The device includes a mounting housing, an equipment housing, an intelligent fastening and anchoring mechanism, and an intelligent cleaning and air pumping mechanism. The equipment housing houses an intelligent geomagnetic sensor module to detect road marking damage. An intelligent pressure-bearing top cover is slidably mounted on the top of the mounting housing, with a telescopic rod and a buffer spring between it and the mounting housing. When a vehicle runs over the intelligent pressure-bearing top cover, the intelligent fastening and anchoring mechanism and the intelligent cleaning and air pumping mechanism are simultaneously triggered. The intelligent fastening and anchoring mechanism pushes out barbed anchoring spikes via a wedge-shaped transmission component, which are then locked by a one-way ratchet, achieving increasing tightness with pressure. The intelligent cleaning and air pumping mechanism compresses a micro-air chamber and automatically purifies the area by ejecting circumferential airflow through jet orifices. The entire device converts the disordered mechanical energy from vehicle rolling into effective kinetic energy, improving equipment stability and detection accuracy.

Description

Technical Field

[0001] This invention relates to the technical field of intelligent transportation infrastructure detection, and in particular to an intelligent geomagnetic induction road marking detection device. Background Technology

[0002] With the rapid development of intelligent transportation systems and autonomous driving technology, the intelligent upgrading of road infrastructure has become an inevitable trend in the industry. In modern urban traffic management and vehicle-road cooperative systems, accurately obtaining the actual status of road markings is crucial for optimizing traffic signal control and improving road traffic efficiency. Among these, geomagnetic sensors are widely used in road marking-assisted positioning systems due to their advantages such as high detection accuracy and low power consumption.

[0003] For example, Chinese patent CN216246256U discloses a road traffic marking detection device, including a movable base, a measuring block, a connecting seat, and a hollow block. The connecting seat is movably connected inside the movable base, and the connecting block is fixedly connected to both sides of the bottom end of the connecting seat. A sleeve is fixedly connected to one side of the top end of the connecting seat. A sliding rod is movably connected inside the sleeve, and a scale rod is movably connected inside the sliding sleeve. The bottom end of the scale rod is fixedly connected to the measuring block. The connecting seat can drive the connecting block to slide in the through groove and be removed. Then, by rotating, the connecting block slides into the horizontal groove and falls into the vertical groove to fix its position, which is convenient for the installation and use of the device. Similarly, the connecting seat can be put back into the base, making it easy to put in and take out.

[0004] However, the aforementioned road marking detection device still has some shortcomings in actual use: 1. First, vehicles kick up a lot of dust while driving. Combined with mud and water splashing caused by rain and snow, as well as the accumulation of leaves and debris around the road, a thick layer of dirt can easily form on the top of the geomagnetic equipment on the road. For geomagnetic devices that integrate road marking detection or optical auxiliary recognition functions, the top surface being covered by mud and dirt will not only seriously affect the visibility of the markings, but also change the local permeability of the medium around the geomagnetic sensor, thereby interfering with the reference calibration of the geomagnetic signal and causing the detection data to drift or be misjudged.

[0005] 2. Secondly, the road itself is in a continuous dynamic alternating load environment. The frequent rolling of various passenger vehicles will generate vertical impact force and horizontal shear force on the detection device embedded in the road surface. Over time, the equipment will shake due to vibration, resulting in poor equipment stability.

[0006] In conclusion, there is still room for improvement in existing road marking detection devices. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides an intelligent geomagnetic induction-based road marking detection device, employing the following technical solution: A smart geomagnetic induction road marking detection device includes an installation housing embedded in the road surface, an equipment housing installed on the road surface, and a smart geomagnetic sensor module installed on the equipment housing. The top of the housing is provided with an opening, and the intelligent pressure-bearing top cover is slidably installed at the opening along the height direction. When a vehicle runs over the intelligent pressure-bearing top cover, it will generate downward displacement in the vertical direction. The intelligent cleaning pump mechanism is located below the intelligent pressure-bearing top cover. It includes a micro air chamber with elastic deformation, a one-way air inlet valve connected to the micro air chamber, and a cleaning ring with jet air holes installed on the intelligent geomagnetic sensor module. The exhaust end of the micro air chamber is connected to the cleaning ring through a pipe. The intelligent fastening and anchoring mechanism is installed on the mounting housing and includes a wedge-shaped transmission component that slides vertically and several anchoring spikes that slide through the mounting housing. The inner end face of the anchoring spikes slides against the inclined end face of the wedge-shaped transmission component, and the wedge-shaped transmission component is connected to the bottom of the intelligent pressure-bearing top cover.

[0008] Preferably, telescopic rods are symmetrically installed between the intelligent pressure-bearing top cover and the mounting housing, and buffer springs are sleeved on the telescopic rods.

[0009] Preferably, the two axial ends of the micro air chamber are respectively abutted against the intelligent pressure-bearing top cover and the mounting shell, so as to realize compression deformation and recovery deformation simultaneously when the intelligent pressure-bearing top cover is under pressure.

[0010] Preferably, a one-way air intake valve is located on the side wall of the mounting housing. The one-way air intake valve is used to draw in outside air when the micro air chamber recovers and to prevent airflow back when the micro air chamber is pressurized.

[0011] Preferably, the jet orifices are distributed in a circumferential ring array along the cleaning ring, and the jet direction of each jet orifice is directed toward the outer edge region of the surface of the intelligent geomagnetic sensor module, so as to form a circumferential purging airflow.

[0012] Preferably, the outer side of the anchoring barb is provided with barbed teeth.

[0013] Preferably, a one-way ratchet locking structure is provided between the anchoring barb and the mounting housing, which prevents the anchoring barb from retracting radially after it extends outward in the radial direction.

[0014] Preferably, the outer wall of the mounting housing is provided with an anti-rotation positioning protrusion, which cooperates with the hole wall of the road pre-embedded hole to limit the circumferential rotation of the mounting housing when it is repeatedly run over by vehicles.

[0015] Preferably, a pressure regulating control device is provided between the mounting housing and the intelligent pressure-bearing top cover. The pressure regulating control device includes a regulating plate that slides through the telescopic rod, one end of the buffer spring is connected to the regulating plate, and the other end is connected to the intelligent pressure-bearing top cover. An adjusting threaded rod is rotatably mounted on the inner wall of the housing. An adjusting block is screwed onto the adjusting threaded rod, and the adjusting block is rotatably engaged with the adjusting plate. An adjusting gear is installed at the bottom of the adjusting threaded rod, and an adjusting rack that meshes with the adjusting gear is slidably provided on the inner wall of the mounting housing. A movable threaded rod that is connected to the end of the adjusting rack is threaded through one end of the mounting housing near the equipment housing.

[0016] Preferably, an extension pipe is movably screwed between the mounting housing and the equipment housing.

[0017] In summary, this application includes at least one of the following beneficial technical effects: I. This invention utilizes an intelligent fastening and anchoring mechanism. By using the kinetic energy of a vehicle rolling over an intelligent pressure-bearing top cover, a wedge-shaped transmission component is driven to push the anchoring spikes radially out. The barbs at the ends of the spikes penetrate into pre-embedded holes in the road surface to form a lock. Combined with a one-way ratchet locking structure, this effectively prevents the anchoring spikes from retracting. Repeated vehicle rolling can push the anchoring spikes to gradually extend, continuously enhancing the anchoring effect. This completely avoids loosening or displacement of the device during long-term use, ensuring long-term stable operation of the equipment.

[0018] 2. The intelligent cleaning pump mechanism of the present invention uses the kinetic energy of vehicle crushing to compress the micro air chamber, and sprays high-pressure circumferential airflow through the jet air holes of the annular array, which can quickly remove dust, debris and rainwater from the surface of the intelligent geomagnetic sensor module, and avoid the accumulation of pollutants affecting the operation of the equipment.

[0019] Third, the intelligent geomagnetic sensor module of this invention can accurately sense the damage to road markings. With the stable installation and clean operating environment of the equipment, it ensures accurate detection signals and provides traffic management departments with real-time and reliable data on the status of road markings, facilitating timely maintenance work and ensuring road traffic safety and order. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a first-view structural schematic diagram of the intelligent geomagnetic induction road marking detection device of the present invention.

[0022] Figure 2 This is a second-view structural schematic diagram of the intelligent geomagnetic induction road marking detection device of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure between the mounting housing and the equipment housing of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure between the intelligent fastening and anchoring mechanism and the pressure adjustment control of the present invention.

[0025] Figure 5 This is a schematic diagram of the structure between the intelligent cleaning pump mechanism, the intelligent fastening and anchoring mechanism, and the pressure adjustment control of the present invention.

[0026] Figure 6 This is a schematic diagram of the structure between the intelligent fastening and anchoring mechanism and the one-way ratchet locking structure of the present invention.

[0027] Figure 7 This is a first-view structural schematic diagram of the pressure adjustment control device of the present invention.

[0028] Figure 8 This is a second-view structural schematic diagram of the pressure adjustment control device of the present invention.

[0029] Explanation of reference numerals in the attached figures: 1. Mounting housing; 2. Equipment housing; 10. Intelligent pressure-bearing top cover; 9. Intelligent geomagnetic sensor module; 3. Intelligent cleaning pump mechanism; 30. Miniature air chamber; 31. One-way air inlet valve; 32. Cleaning ring; 33. Jet air hole; 4. Intelligent fastening and anchoring mechanism; 40. Wedge-shaped transmission component; 41. Anchoring spike; 11. Telescopic rod; 12. Buffer spring; 410. Barbed tooth; 5. One-way ratchet locking structure; 50. One-way pawl; 51. Razor tooth; 6. Anti-rotation positioning protrusion; 7. Pressure adjustment control; 70. Control plate; 71. Control threaded rod; 72. Control block; 73. Control gear; 74. Control rack; 75. Moving threaded rod; 8. Extension pipe. Detailed Implementation

[0030] The following combination Figures 1-8 This application will be described in further detail.

[0031] This invention provides an intelligent geomagnetic induction road marking detection device. This device converts the disordered mechanical destructive energy generated when a vehicle rolls over it into effective kinetic energy to drive the device to self-clean and automatically lock. This achieves the effect of the more the vehicle rolls over it, the tighter it becomes, and the effect of sweeping immediately after rolling over it. This improves the operational stability and detection accuracy of the geomagnetic detection equipment, as detailed below.

[0032] Reference Figure 1 As shown, an intelligent geomagnetic induction road marking detection device includes an installation housing 1 embedded in the road surface and an equipment housing 2 installed on the road surface.

[0033] Mounting housing 1 is typically made of corrosion-resistant cast aluminum alloy, and its main function is to provide effective support for the entire device.

[0034] The device housing 2 houses precision electronic components. The device housing 2 is vertically distributed and connected to the mounting housing 1. The device housing 2 has a highly integrated intelligent geomagnetic sensor module 9 (the existing known structure corresponds to magnetic induction road markings). This module includes a high-sensitivity three-component geomagnetic induction chip, a microprocessor, a wireless communication radio frequency unit, and a micro energy storage battery that provides long-lasting power. The above components are existing known structures and are used to sense whether the road markings on the road surface in the area are damaged.

[0035] The equipment housing 2 is designed to be vertically distributed and located on both sides of the road, which can prevent the equipment from being affected by vibrations generated during vehicle travel.

[0036] Reference Figure 2 and Figure 3 As shown, the top of the mounting housing 1 has an opening, and the intelligent pressure-bearing top cover 10 is slidably mounted at the opening along the height direction. When a vehicle runs over the intelligent pressure-bearing top cover 10, it will generate a downward displacement in the vertical direction.

[0037] During device installation, an installation pit is first dug on the road surface to facilitate the placement of the housing 1. When the housing 1 is placed, the intelligent pressure-bearing top cover 10 protrudes from the road surface, ensuring that vehicles can run over the intelligent pressure-bearing top cover 10 without affecting the vehicle's driving stability.

[0038] The intelligent pressure-bearing top cover 10 is a component that comes into direct, high-frequency, rigid contact with the vehicle tires. In order to withstand wear and impact, the intelligent pressure-bearing top cover 10 must be made of titanium alloy with excellent wear resistance or martensitic stainless steel that has undergone special hardening treatment.

[0039] It should also be noted that, referring to Figure 2 As shown, the intelligent pressure-bearing top cover 10 is composed of an arc-shaped section and a vertical section. Only the arc-shaped section of the intelligent pressure-bearing top cover 10 protrudes from the ground. Furthermore, the intelligent pressure-bearing top cover 10 is not a fixed component. When a high-speed wheel runs over it, the wheel contacts the arc-shaped section of the intelligent pressure-bearing top cover 10. The instantaneous impact kinetic energy will cause the entire intelligent pressure-bearing top cover 10 to quickly overcome the spring preload and slide downwards, converting the kinetic energy of the impact into the elastic potential energy of the spring to buffer the impact force. At the same time, it can also avoid the risk of tire bulges or bursts caused by the wheel running over it.

[0040] The intelligent pressure-bearing top cover 10 maintains a high-precision clearance fit with the opening at the top of the mounting housing 1, and is supplemented with a self-lubricating dustproof sealing ring; when the vehicle wheel runs over the device, the weight of the tire instantly acts on the surface of the intelligent pressure-bearing top cover 10, forcing the intelligent pressure-bearing top cover 10 to overcome internal resistance and press down and displace in the vertical direction.

[0041] When the wheel runs over the intelligent pressure-bearing top cover 10, it will simultaneously trigger the intelligent cleaning air pump mechanism 3 and the intelligent fastening and anchoring mechanism 4. The intelligent fastening and anchoring mechanism 4 is used to consolidate the stability of the entire mounting housing 1. The intelligent cleaning air pump mechanism 3 wipes the intelligent geomagnetic sensor module 9 on the equipment housing 2 to prevent external dust and other factors from reducing the detection accuracy of the intelligent geomagnetic sensor module 9.

[0042] Reference Figure 4 and Figure 5 As shown, a telescopic rod 11 is symmetrically installed between the intelligent pressure-bearing top cover 10 and the mounting housing 1, and a buffer spring 12 is sleeved on the telescopic rod 11.

[0043] One end of the telescopic rod 11 is fixedly connected to the bottom surface of the intelligent pressure-bearing top cover 10, and the other end is fixedly connected to the inner bottom surface of the mounting housing 1. It can provide guidance for the sliding of the intelligent pressure-bearing top cover 10, ensuring that the intelligent pressure-bearing top cover 10 slides smoothly in the vertical direction and avoids deviation, tilting and other situations.

[0044] One end of the buffer spring 12 is connected to the bottom surface of the intelligent pressure-bearing top cover 10, and the other end is connected to the control plate 70 of the pressure adjustment control 7. It can provide a buffering effect when the vehicle runs over the intelligent pressure-bearing top cover 10, absorb the impact force generated by the vehicle running over it, and push the intelligent pressure-bearing top cover 10 to quickly reset after the vehicle leaves.

[0045] Reference Figure 5 and Figure 6 As shown, the intelligent fastening and anchoring mechanism 4 is installed in the mounting housing 1 and includes a wedge-shaped transmission member 40 that can slide in the vertical direction and a number of anchoring spikes 41 that slide through the mounting housing 1; the inner end face of the anchoring spikes 41 slides against the inclined end face of the wedge-shaped transmission member 40; the wedge-shaped transmission member 40 is connected to the bottom of the intelligent pressure-bearing top cover 10.

[0046] The intelligent fastening and anchoring mechanism 4 is the core component for achieving self-fastening of the installation housing 1. It relies on the kinetic energy of the vehicle rolling over the intelligent pressure-bearing top cover 10 to achieve automatic fastening of the device, ensuring that the device always maintains a firm installation state under the condition of repeated vehicle rolling.

[0047] The anchoring barbs 41 are circumferentially slidably mounted on the side wall of the mounting housing 1 and are evenly distributed along the circumference of the mounting housing 1. The number of barbs is set according to the size of the mounting housing 1 and the anchoring requirements. The outer end of the anchoring barb 41 is provided with barbed teeth 410. The barbed teeth 410 are sharp and can penetrate into the soil or concrete of the pre-embedded hole in the road surface to form a lock and effectively prevent the anchoring barbs 41 from retracting.

[0048] Reference Figure 6As shown, a one-way ratchet locking structure 5 is provided between the anchoring barb 41 and the mounting housing 1 to limit the retraction of the anchoring barb 41 and ensure the stability of the anchoring effect. The one-way ratchet locking structure 5 consists of ratchet 51 and one-way pawl 50. The ratchet 51 is located at the bottom of the anchoring barb 41 and is distributed along the length of the anchoring barb 41. The one-way pawl 50 is rotatably mounted on the inner wall of the mounting housing 1 by a torsion spring and can rotate around the connection point.

[0049] When the wedge-shaped transmission component 40 pushes the anchor barb 41 to extend outward, the ratchet 51 pushes the one-way pawl 50 to rotate, the torsion spring is compressed, allowing the anchor barb 41 to move; when the anchor barb 41 tends to retract, the one-way pawl 50 is reset under the action of the torsion spring, and tightly meshes with the ratchet 51, preventing the anchor barb 41 from retracting, ensuring that the anchor barb 41 always remains in the extended state and is firmly embedded in the hole wall of the pre-embedded hole in the road surface.

[0050] The working steps of the intelligent fastening and anchoring mechanism 4 are as follows: When a vehicle runs over the intelligent pressure-bearing top cover 10, the intelligent pressure-bearing top cover 10 slides downward, driving the wedge-shaped transmission component 40 to move downward synchronously; the outer wall slope of the wedge-shaped transmission component 40 slides and abuts against the inner slope of the anchoring spike 41, generating a radial thrust, pushing the anchoring spike 41 to extend radially outward and embed into the hole wall of the pre-embedded hole in the road surface; during the extension of the anchoring spike 41, the ratchet 51 of the one-way ratchet locking structure 5 pushes the one-way pawl 50 to rotate, allowing the anchoring spike 41 to move; when the vehicle leaves... Afterwards, the intelligent pressure-bearing top cover 10 returns to its original position under the action of the buffer spring 12, driving the wedge-shaped transmission component 40 to move upward. The thrust of the wedge-shaped transmission component 40 on the anchoring barb 41 disappears, but the one-way ratchet locking structure 5 prevents the anchoring barb 41 from retracting, keeping the anchoring barb 41 in an extended state, thus achieving self-tightening of the device. As the vehicle repeatedly rolls over it, the wedge-shaped transmission component 40 moves downward continuously, pushing the anchoring barb 41 to gradually extend outward, making the anchoring effect increasingly firm, ensuring that the device will not loosen or shift during long-term use.

[0051] Looking back Figure 3 As shown, when the vehicle rolls over the installation housing 1 for a long time, the intelligent fastening and anchoring mechanism 4 can ensure that the device will not loosen or shift during long-term use. Furthermore, in order to ensure the state of the installation housing 1 and prevent it from rotating.

[0052] The outer wall of the mounting housing 1 is provided with an anti-rotation positioning protrusion 6, which cooperates with the hole wall of the road pre-embedded hole to limit the circumferential rotation of the mounting housing 1 when it is repeatedly run over by vehicles.

[0053] The anti-rotation positioning protrusion 6 is set on the outer wall of the mounting housing 1, extends along the axial direction of the mounting housing 1, and is integrally formed with the mounting housing 1. It is a key component for realizing the anti-rotation function of the device. The anti-rotation positioning protrusion 6 is made of high-strength material, which is the same material as the mounting housing 1. It has good compressive and impact resistance, and can be embedded in the hole wall of the road pre-embedded hole to form circumferential positioning and restrict the circumferential rotation of the mounting housing 1.

[0054] The number of anti-rotation positioning protrusions 6 can be set according to the size of the mounting housing 1 and the anti-rotation requirements. Usually, there are multiple protrusions, which are evenly distributed along the circumference of the mounting housing 1 to ensure that the mounting housing 1 can be effectively positioned in all directions and avoid local rotation.

[0055] During installation, the wall of the pre-embedded hole in the road surface is processed according to the shape of the anti-rotation positioning protrusion 6 to ensure that the anti-rotation positioning protrusion 6 can be tightly embedded in the hole wall and form a firm fit with the hole wall. When the vehicle runs over the device, a circumferential torque is generated, which attempts to drive the mounting housing 1 to rotate. However, the anti-rotation positioning protrusion 6 is in close contact with the hole wall, and the hole wall generates a reaction force on the anti-rotation positioning protrusion 6, preventing the mounting housing 1 from rotating. This ensures that the mounting housing 1 always maintains a fixed direction, thereby ensuring that the detection direction of the intelligent geomagnetic sensor module 9 is always accurate, avoiding the distortion of the detection signal caused by the rotation of the mounting housing 1, and improving the stability of the detection accuracy.

[0056] When a car runs over the intelligent pressure-bearing top cover 10, it not only improves the stability of the mounting housing 1, but also triggers the intelligent cleaning air pump mechanism 3.

[0057] Reference Figure 3 and Figure 5 As shown, the intelligent cleaning pump mechanism 3 is located below the intelligent pressure-bearing top cover 10 and includes an elastically deformable micro air chamber 30, a one-way air inlet valve 31 connected to the micro air chamber 30, and a cleaning ring 32 with a jet air hole 33 installed on the intelligent geomagnetic sensor module 9. The exhaust end of the micro air chamber 30 is connected to the cleaning ring 32 through a pipe.

[0058] The miniature air chamber 30 is an elastically deformable structure made of corrosion-resistant, high-temperature-resistant, and highly elastic materials, such as silicone and fluororubber. Its shape can be designed according to the installation space, and it is usually cylindrical or elliptical.

[0059] The miniature air chamber 30 generally adopts a corrugated tube type elastic air chamber. Its corrugated tube structure has good elasticity and sealing performance. It can be compressed quickly when under pressure to expel the internal air and quickly draw in air when recovering. The structure is stable and not easily damaged, making it suitable for road sections with high traffic volume and frequent vehicle traffic.

[0060] In addition, there is the elastic bladder-type air chamber, which adopts an elastic bladder structure, has better deformation capacity, can adapt to different compression amounts, and is lightweight, easy to install, and suitable for road sections with thin road surface and limited installation space.

[0061] The jet air holes 33 are distributed in a circumferential ring array along the cleaning ring 32, and the jet direction of each jet air hole 33 is towards the outer edge area of ​​the surface of the intelligent geomagnetic sensor module 9, so as to form a circumferential blowing airflow that fully covers the surface of the intelligent pressure-bearing top cover 10, especially the outer edge area, and quickly blows away the dust, debris, rainwater and other pollutants on the surface to avoid the accumulation of pollutants affecting the normal operation of the device.

[0062] Reference Figure 5 As shown, a one-way air intake valve 31 is provided on the side wall of the mounting housing 1. The one-way air intake valve 31 is used to draw in outside air when the micro air chamber 30 is restored, and to prevent airflow back when the micro air chamber 30 is pressurized.

[0063] When the intelligent pressure-bearing top cover 10 resets and the micro air chamber 30 returns to its original deformation, a negative pressure is generated inside the micro air chamber 30. The outside air pushes the valve core to overcome the spring force and open the one-way air inlet valve 31, entering the micro air chamber 30 to prepare for the next compression and exhaust. When the intelligent pressure-bearing top cover 10 is pressed down and the micro air chamber 30 is compressed and deformed, the air pressure inside the micro air chamber 30 increases, pushing the valve core to close the one-way air inlet valve 31, preventing the airflow from flowing back, and ensuring that all the airflow can be ejected through the jet air hole 33.

[0064] The one-way air intake valve 31 (which is a known existing structure) has a filter structure at its air intake port, which can filter dust and debris in the outside air and prevent dust and debris from entering the micro air chamber 30, causing blockage or damage to the air chamber.

[0065] The working process of the intelligent cleaning pump mechanism 3 is as follows: When a vehicle runs over the intelligent pressure-bearing top cover 10, the intelligent pressure-bearing top cover 10 slides downward, pushing the micro air chamber 30 to compress. The air pressure inside the micro air chamber 30 increases, the one-way air intake valve 31 closes, and the airflow is ejected through the jet air hole 33, forming a circumferential blowing airflow to remove contaminants from the surface of the intelligent pressure-bearing top cover 10. When the vehicle leaves, under the action of the buffer spring 12, the intelligent pressure-bearing top cover 10 returns to its original position, the micro air chamber 30 returns to its original deformation, and a negative pressure is generated inside. The one-way air intake valve 31 opens, and clean air from the outside enters the micro air chamber 30 through the one-way air intake valve 31 to complete the air intake process and prepare for the next blowing. With repeated running over by the vehicle, the intelligent cleaning pump mechanism 3 works continuously in a cycle to achieve automatic cleaning of the surface of the intelligent pressure-bearing top cover 10 without manual intervention.

[0066] An extension pipe 8 is movably screwed between the mounting housing 1 and the equipment housing 2. The extension pipe 8 is used to regulate the layout path of the pipes connected to the micro air chamber 30, improving assembly adaptability; it also facilitates the timely ejection of airflow from the jet air hole 33. The extension pipe 8 is made of high-strength corrosion-resistant material, and its two ends are screwed to the mounting housing 1 and the equipment housing 2 respectively, ensuring a firm connection, good sealing, and easy disassembly and replacement. By adding the extension pipe 8, the distance between the equipment housing 2 and the mounting housing 1 can be flexibly adjusted to adapt to different road surface thicknesses and different detection requirements, without the need to redesign and replace the mounting housing 1, reducing operating costs and improving the applicability and flexibility of the device.

[0067] However, it should be noted that the entire device is installed on the road surface, which is complex and contains a large amount of mud, sand, rainwater, and other impurities. To ensure the stable operation of the device, the intelligent pressure-bearing top cover 10 and the mounting housing 1 are slidably assembled, and multiple layers of rubber rings are provided between them (see reference). Figure 4 , Figure 7 As shown in the figure (with annotations), this prevents rainwater carrying mud and sand particles from entering the interior of the mounting housing 1 between the intelligent pressure-bearing top cover 10 and the mounting housing 1.

[0068] In addition, the wedge-shaped transmission component 40 is slidably mounted on the side wall of the mounting housing 1, and a rubber strip is installed on the wedge-shaped transmission component 40 (see reference). Figure 6 As shown, rubber blocks are installed on the groove wall of the mounting housing 1 where the wedge-shaped transmission component 40 slides to prevent rainwater from entering the mounting housing 1 from the vicinity of the wedge-shaped transmission component 40. The rubber strips and the anchoring spikes 41 on the wedge-shaped transmission component 40 are alternately distributed to ensure the seal between the wedge-shaped transmission component 40 and the mounting housing 1.

[0069] Furthermore, when a vehicle runs over the intelligent pressure-bearing top cover 10, it can convert the disordered mechanical destructive energy generated by the vehicle into effective kinetic energy for driving the device to self-clean and automatically lock. However, the traffic flow on the road is very large. If the device needs to self-clean and automatically lock after each vehicle passes by, it will cause the entire device to work frequently and shorten its service life. Therefore, this application also provides a pressure adjustment control 7 to adjust the trigger pressure threshold of the intelligent pressure-bearing top cover 10.

[0070] Reference Figure 7 and Figure 8 As shown, a pressure regulating control 7 is also provided between the mounting housing 1 and the intelligent pressure-bearing top cover 10. The pressure regulating control 7 includes a regulating plate 70 that slides through the telescopic rod 11, one end of the buffer spring 12 is connected to the regulating plate 70, and the other end is connected to the intelligent pressure-bearing top cover 10; a regulating threaded rod 71 is rotatably installed on the inner wall of the mounting housing 1, and a regulating block 72 is screwed onto the regulating threaded rod 71. The regulating block 72 is rotatably engaged with the regulating plate 70.

[0071] A regulating gear 73 is installed at the bottom of the regulating threaded rod 71. A regulating rack 74 that meshes with the regulating gear 73 is slidably provided on the inner wall of the mounting housing 1. A movable threaded rod 75 that is connected to the end of the regulating rack 74 is threaded through one end of the mounting housing 1 near the equipment housing 2.

[0072] The control plate 70 is slidably mounted on the telescopic rod 11 and can slide up and down along the telescopic rod 11. The control threaded rod 71 is rotatably mounted on the mounting seat on the inner wall of the mounting housing 1. Its surface is provided with threads and is screwed to the control block 72. The control block 72 is rotatably engaged with the control plate 70 and can drive the control plate 70 to slide along the telescopic rod 11. At the same time, it can rotate relative to the control plate 70. The control gear 73 is fixedly mounted on the bottom of the control threaded rod 71 and meshes with the control rack 74. The control rack 74 is slidably assembled in the slide groove on the inner wall of the mounting housing 1 and can slide horizontally along the slide groove. The movable threaded rod 75 is threaded through the end of the mounting housing 1 near the equipment housing 2. Its end is connected to the end of the control rack 74. Rotating the movable threaded rod 75 can drive the control rack 74 to slide.

[0073] When installing the entire device, an opening is made in the road surface beforehand to facilitate the control of the rotation of the moving threaded rod 75 using external equipment such as pliers.

[0074] During operation, rotating the movable threaded rod 75 (which usually has an anti-slip adjustment knob at its outer end) causes the movable threaded rod 75 to be screwed to the mounting housing 1. When rotating, it will move horizontally along the length of the mounting housing 1, thereby driving the adjusting rack 74 connected to its end to slide horizontally along the groove on the inner wall of the mounting housing 1. The horizontal sliding of the adjusting rack 74 will drive the adjusting gear 73 to rotate synchronously, thereby driving the adjusting threaded rod 71 to rotate around the inner wall of the mounting housing 1.

[0075] When the adjusting threaded rod 71 rotates, it drives the adjusting block 72 to move up and down along the axial direction of the adjusting threaded rod 71. The adjusting block 72 rotates and engages with the adjusting plate 70, which in turn drives the adjusting plate 70 to slide up and down along the telescopic rod 11. Since one end of the buffer spring 12 is connected to the adjusting plate 70 and the other end is connected to the intelligent pressure-bearing top cover 10, the sliding of the adjusting plate 70 will compress or relax the buffer spring 12, thereby adjusting the preload of the buffer spring 12 and achieving precise adjustment of the buffer pressure of the intelligent pressure-bearing top cover 10.

[0076] When the buffer spring 12 is compressed, the preload increases and the buffer pressure is enhanced, making it suitable for road sections with high traffic volume; when the buffer spring 12 is relaxed, the preload decreases and the buffer pressure is weakened, making it suitable for road sections with low traffic volume.

[0077] For example, in areas with high traffic volume, to avoid frequent triggering of the entire device, the pre-tightening force is increased and the buffer pressure is enhanced. At this time, only heavy vehicles will press the intelligent pressure-bearing top cover 10 into place, thereby triggering the entire device. Conversely, when light vehicles pass by the intelligent pressure-bearing top cover 10, they will also press down on the intelligent pressure-bearing top cover 10, but will not trigger the entire device. This can avoid frequent cleaning of the entire device.

[0078] Therefore, the pressure adjustment control 7 of this application realizes flexible adjustment of the preload of the buffer spring 12, avoids excessive buffering which leads to slow response of the mechanism, and adapts to the needs of different road conditions.

[0079] During operation: First, dig an installation pit on the road surface to fit the installation housing 1, bury the installation housing 1 in the pit, and connect the installation housing 1 and the equipment housing 2 by screwing the extension pipe 8. Adjust the length of the extension pipe 8 according to the road thickness and testing requirements to ensure that the equipment housing 2 is vertically distributed on both sides of the road and the intelligent pressure-bearing top cover 10 protrudes slightly from the road surface (without affecting vehicle traffic). During installation, make sure that the anti-rotation positioning protrusion 6 on the outside of the installation housing 1 fits tightly with the pit hole wall to complete the overall installation and positioning of the device, while ensuring that each component is assembled in place and firmly connected.

[0080] Step 2: Based on the actual working conditions such as road traffic flow and vehicle weight, rotate the movable threaded rod 75 to drive the adjusting rack 74 to slide horizontally along the inner wall groove of the mounting housing 1. The adjusting rack 74 engages with and drives the adjusting gear 73 to rotate, which in turn drives the adjusting threaded rod 71 to rotate. The adjusting threaded rod 71 drives the adjusting block 72 to move up and down, pushing the adjusting plate 70 to slide along the telescopic rod 11, compressing or releasing the buffer spring 12, and setting an appropriate buffer preload to complete the working condition adaptation (increase the preload when the traffic flow is large, and only heavy vehicles can trigger the entire device, and decrease it when the traffic flow is small).

[0081] Step 3: When the vehicle travels over the device, the wheels crush the intelligent pressure-bearing top cover 10, forcing the intelligent pressure-bearing top cover 10 to overcome the resistance of the buffer spring 12 and slide vertically downward along the telescopic rod 11; this downward displacement simultaneously triggers the intelligent cleaning pump mechanism 3 and the intelligent fastening and anchoring mechanism 4 to start, while the telescopic rod 11 provides guidance for the sliding of the intelligent pressure-bearing top cover 10 to avoid deviation and tilting.

[0082] Step 4: When the intelligent pressure-bearing top cover 10 moves down, it drives the wedge-shaped transmission component 40 at the bottom to move down synchronously. The outer inclined surface of the wedge-shaped transmission component 40 slides and abuts against the inner inclined surface of the anchoring barb 41, generating radial thrust and pushing the anchoring barb 41 to extend outward along the side wall of the mounting housing 1 to achieve locking. When the vehicle leaves, the intelligent pressure-bearing top cover 10 resets, the wedge-shaped transmission component 40 moves up, and the one-way pawl 50 resets under the action of the torsion spring and engages with the ratchet 51 to prevent the anchoring barb 41 from retracting, thus achieving self-tightening of the device. Repeated running over by the vehicle can cause the anchoring barb 41 to gradually extend, making the anchoring more secure.

[0083] Step 5: When the intelligent pressure-bearing top cover 10 moves down a certain distance (a slight downward stroke will not trigger the mechanism to operate), it simultaneously squeezes the micro air chamber 30 below, causing the air pressure inside the micro air chamber 30 to increase. The one-way air intake valve 31 closes, and the internal air is transported through the pipe to the cleaning ring 32 installed on the intelligent geomagnetic sensor module 9. The air is then sprayed out through the jet air holes 33 of the circumferential array of the cleaning ring 32, forming a circumferential blowing airflow to thoroughly remove dust, debris, rainwater and other pollutants from the surface of the intelligent geomagnetic sensor module 9. When the vehicle leaves, the intelligent pressure-bearing top cover 10 is reset under the action of the buffer spring 12, and the outside air refills the micro air chamber 30, completing the air intake and preparing for the next blowing.

[0084] Step 6: The intelligent geomagnetic sensor module 9 senses changes in the geomagnetic field in the area in real time. When a vehicle passes by, the vehicle's metal parts disturb the geomagnetic field. The intelligent geomagnetic sensor module 9 converts the disturbance signal into an electrical signal, which is transmitted to an external system via the wireless communication radio frequency unit to analyze and determine whether the road markings are damaged.

[0085] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An intelligent geomagnetic induction-based road marking detection device, characterized in that: It includes an installation housing (1) buried in the road surface, an equipment housing (2) set on the road surface, and an intelligent geomagnetic sensor module (9) installed on the equipment housing (2). The top of the housing (1) is provided with an opening, and the intelligent pressure-bearing top cover (10) is slidably assembled at the opening along the height direction. When a vehicle runs over the intelligent pressure-bearing top cover (10), it generates a downward displacement in the vertical direction. The intelligent cleaning pump mechanism (3) is located below the intelligent pressure-bearing top cover (10) and includes a micro air chamber (30) with elastic deformation, a one-way air inlet valve (31) connected to the micro air chamber (30), and a cleaning ring (32) with a jet air hole (33) and installed on the intelligent geomagnetic sensor module (9). The exhaust end of the micro air chamber (30) is connected to the cleaning ring (32) through a pipe. The intelligent fastening and anchoring mechanism (4) is installed in the mounting housing (1) and includes a wedge-shaped transmission member (40) that slides in the vertical direction and a number of anchoring spikes (41) that slide through the mounting housing (1). The inner end face of the anchoring spikes (41) slides against the inclined end face of the wedge-shaped transmission member (40), and the wedge-shaped transmission member (40) is connected to the bottom of the intelligent pressure-bearing top cover (10).

2. The intelligent geomagnetic induction road marking detection device according to claim 1, characterized in that: A telescopic rod (11) is symmetrically installed between the intelligent pressure-bearing top cover (10) and the mounting housing (1), and a buffer spring (12) is sleeved on the telescopic rod (11).

3. The intelligent geomagnetic induction road marking detection device according to claim 1, characterized in that: The two ends of the micro air chamber (30) are respectively abutted against the intelligent pressure-bearing top cover (10) and the mounting housing (1) so as to realize compression deformation and recovery deformation simultaneously when the intelligent pressure-bearing top cover (10) is under pressure.

4. The intelligent geomagnetic induction road marking detection device according to claim 1, characterized in that: A one-way air intake valve (31) is provided on the side wall of the mounting housing (1). The one-way air intake valve (31) is used to draw in outside air when the micro air chamber (30) is restored, and to prevent airflow back when the micro air chamber (30) is pressurized.

5. The intelligent geomagnetic induction road marking detection device according to claim 1, characterized in that: The jet orifices (33) are distributed in a circumferential ring array along the cleaning ring (32), and the jet direction of each jet orifice (33) is directed toward the outer edge region of the surface of the intelligent geomagnetic sensor module (9) to form a circumferential purging airflow.

6. The intelligent geomagnetic induction road marking detection device according to claim 1, characterized in that: The outer side of the anchor barb (41) is provided with barbed teeth (410).

7. The intelligent geomagnetic induction road marking detection device according to claim 1, characterized in that: A one-way ratchet locking structure (5) is provided between the anchoring barb (41) and the mounting housing (1), and the anchoring barb (41) is prohibited from retracting radially after it extends outward in the radial direction.

8. The intelligent geomagnetic induction road marking detection device according to claim 1, characterized in that: The outer wall of the mounting housing (1) is provided with an anti-rotation positioning protrusion (6), which cooperates with the hole wall of the road pre-embedded hole to limit the circumferential rotation of the mounting housing (1) when it is repeatedly run over by vehicles.

9. The intelligent geomagnetic induction road marking detection device according to claim 1, characterized in that: A pressure regulating control (7) is also provided between the mounting housing (1) and the intelligent pressure-bearing top cover (10). The pressure regulating control (7) includes a regulating plate (70) that slides through the telescopic rod (11). One end of the buffer spring (12) is connected to the regulating plate (70), and the other end is connected to the intelligent pressure-bearing top cover (10). An adjusting threaded rod (71) is rotatably mounted on the inner wall of the housing (1). An adjusting block (72) is screwed onto the adjusting threaded rod (71). The adjusting block (72) is rotatably engaged with the adjusting plate (70). The bottom of the adjusting threaded rod (71) is equipped with an adjusting gear (73), and the inner wall of the mounting housing (1) is provided with an adjusting rack (74) that meshes with the adjusting gear (73). The end of the mounting housing (1) near the equipment housing (2) is provided with a movable threaded rod (75) that is connected to the end of the adjusting rack (74) by a screw connection.

10. The intelligent geomagnetic induction road marking detection device according to claim 1, characterized in that: An extension pipe (8) is movably screwed between the mounting housing (1) and the equipment housing (2).

Images