An intelligent lifting speed bump device based on non-Newtonian fluid

Abstract

The present invention discloses an intelligent lifting speed bump device based on non-Newtonian fluid, which automatically controls the switching of speed bump with or without mode through vehicle identification and speed measurement sensors, lifting control processors, diaphragm soft films, non-Newtonian fluids, wear-resistant speed bump stripe soft films, perforated hard pavement layers, air pump actuation systems, etc. Intelligent classification management is realized on the working road section. For vehicles passing through the speed limit in violation of regulations, the "with" mode is activated to provide all the functions of reminder and speed limit of traditional speed bumps. The liquid-solid two-phase conversion characteristics of non-Newtonian fluids, which "harden when encountering strong and weaken when encountering weak", are used to effectively reduce the impact damage of speed bumps on vehicles and the causes of safety accidents; for motor vehicles or non-motor vehicles that meet the speed limit requirements, the "without" mode is activated to provide a road environment as if walking on flat ground, solving the problem of "passive punishment of vehicles that abide by traffic rules" caused by traditional speed bumps that have been criticized by people for a long time. This invention is used in the field of intelligent traffic safety facility technology.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent traffic safety facilities, and in particular to an intelligent lifting speed reduction belt device based on non-Newtonian fluid. Background Art

[0002] Speeding is one of the causes of traffic accidents and seriously threatens people's lives. Speed ​​bumps are traffic facilities that remind and limit the speed of vehicles in sections where speed reduction is required. They are standard equipment on regular roads. Currently, commonly used speed bumps include spike speed bumps, hump speed bumps, cement platform speed bumps, speed bump speed bumps, etc., all of which are fixed hard roadblocks. Although these traditional speed bumps can serve as a reminder for motor vehicle drivers, when vehicles pass through speed bumps, they will hit the bumps of the speed bumps and produce a strong sense of bumps. Whether it is a speeding vehicle or a vehicle that complies with traffic rules and drives at the prescribed speed, passing through traditional speed bumps will produce a strong impact, which not only damages the vehicle suspension system and tires, but also seriously affects the riding comfort of the occupants, and even induces more serious traffic safety accidents. There is also the problem of "passive punishment" for vehicles that comply with traffic rules and pass through speed bumps. This kind of irrationality has made traditional speed bumps criticized by people for a long time.

[0003] In the field of speed bump technology, many researchers have proposed solutions to this problem, but there are still some shortcomings. For example, the patent with publication number CN102606673B proposes a quasi-zero stiffness vibration isolation device that uses horizontal spring pre-compression to obtain negative stiffness characteristics. The device only has quasi-zero stiffness characteristics within a very small displacement range, and will cause serious instability under larger excitation displacements. Patent No. CN207419293U proposes a tubular bag flat non-Newtonian fluid speed bump device, which only fills the flexible hollow speed bump with non-Newtonian fluid and lacks auxiliary design for speed bump height control. The effect of using only the shear thickening characteristics of non-Newtonian fluids is relatively limited, and the non-Newtonian fluid mixed with corn flour and pure water is extremely variable, which is defective as a filler for flexible hollow speed bumps, and it is difficult to achieve the described design goals in actual engineering. In addition, the programmed single-chip microcomputer with two pressure sensors and a wireless transmission unit described in the device is not an active control unit of the speed bump itself, but is only used to feedback vehicle information to the traffic management system, which does not belong to the functional requirements of the speed bump itself. The application number 201811429134.X in the public notice proposes a non-Newtonian fluid speed limiter and a speed limit belt, and its structural design is unreasonable. According to the invention, its non-Newtonian fluid characteristics only have obvious effects under the action of vertical impact force. However, it is well known that during the impact process, the greatest impact force is generally at the beginning of contact, and when a vehicle passes through a speed bump, the impact force at the beginning of contact is biased toward the horizontal plane of the road surface (biased horizontally), rather than vertically downward or at the moment when the wheel is positively pressing the speed bump. In addition, other existing speed bump patents related to non-Newtonian fluids have the problem of "passive punishment" for speed bump collisions for vehicles that comply with traffic rules, and only have a certain degree of effect in reducing the amplitude of bumps. There are existing speed bumps with lifting technology, and their lifting technology has common defects. That is, because the overall structure of the speed bump sinks, the trapezoidal or arc-shaped surface of the speed bump will produce two concave pits in front and behind on the road surface after it descends, and the road surface is not flat, which is equivalent to the convex speed bump turning into a concave speed bump, and even worsens the safe passability of the vehicle. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent lifting speed bump device based on non-Newtonian fluid to solve the impact damage of traditional speed bumps on vehicles and reduce the causes of safety accidents, especially to solve the problem of "passive punishment" of passing vehicles that obey traffic rules in the field of traditional speed bump technology.

[0005] The technical solution adopted by the present invention is:

[0006] An intelligent lifting speed reduction belt device based on non-Newtonian fluid, comprising:

[0007] Hard pavement layer, closed air chamber housing, air pump actuation system, diaphragm soft film, at least one wear-resistant speed bump stripe soft film, non-Newtonian fluid, vehicle identification and speed measurement sensor, lifting control processor. The hard pavement layer is provided with a plurality of holes; the closed air chamber housing is installed at the lower end of the hard pavement layer, and the closed air chamber housing is made of hard material; the air pump actuation system is installed below the hard pavement layer, and the air pump actuation system is connected to the closed air chamber housing through an air pipe; the diaphragm soft film is installed in the closed air chamber housing, and the two ends of the diaphragm soft film are sealed and bonded to the lower surface of the hard pavement layer; each of the wear-resistant speed bump stripe soft films is installed in parallel on the upper surface of the hard pavement layer; the diaphragm soft film and the wear-resistant speed bump stripe soft film form a closed inner cavity, and the inner cavity is divided into an upper cavity and a lower cavity, and the upper cavity and the lower cavity are connected through each hole; The non-Newtonian fluid is stored in the inner cavity, and has the liquid-solid two-phase conversion characteristics of "hardening when encountering strong and weakening when encountering weak" under the action of impact load; the vehicle identification and speed measurement sensors are installed on both sides of the hard road surface layer; the vehicle identification and speed measurement sensors are electrically connected to the lifting and lowering control processor, and the lifting and lowering control processor controls the intake and exhaust volume of the air pump actuation system, and through air pressure adjustment, squeezes the non-Newtonian fluid in the lower cavity between the diaphragm soft film and the hard road surface layer to realize the speed bump "with" mode, or extracts the non-Newtonian fluid in the upper cavity between the wear-resistant speed bump stripe soft film and the hard road surface layer to realize the speed bump "without" mode.

[0008] As one of the key points of the technical solution of the present invention, the switching of the "with or without" mode of the speed bump is realized by the lifting control processor, the air pump actuation system, the diaphragm soft film, the non-Newtonian fluid and the holes. The non-Newtonian fluid in the lower chamber is squeezed to fill the upper chamber and bulge into the shape of a normal speed bump, realizing the "with" mode of the speed bump; or the non-Newtonian fluid in the upper chamber is evacuated, so that only a layer of wear-resistant speed bump stripe soft film is left on the hard road surface layer, thereby realizing the "without" mode of the speed bump.

[0009] As one of the key points of the technical solution of the present invention, intelligent classification management of passing vehicles is realized in sections where speed limit or deceleration is required. For vehicles that violate the speed limit, the speed bump "yes" mode is activated, providing all the functions of reminder and speed limit of traditional speed bumps; for motor vehicles or non-motor vehicles that meet the speed limit requirements, the "no" mode is activated to provide a road driving environment like walking on flat ground, effectively solving the problem of "passive punishment" in the existing technology that all passing vehicles are inevitably hit by traditional speed bumps regardless of whether they are speeding or not.

[0010] As a further improvement of the technical solution of the present invention, the hard pavement layer is made of stainless steel or other materials to form a plate, and the upper surface is smooth and flat, with sufficient strength to bear vehicle rolling. It is installed by sunken riveting, flush with other asphalt or cement pavements connected. When the upper cavity is evacuated of non-Newtonian fluid and only a layer of wear-resistant speed bump stripe soft film remains, the hard pavement layer provides normal pavement support, allowing vehicles or non-motorized vehicles that comply with traffic rules to pass as if walking on flat ground.

[0011] As a further improvement of the technical solution of the present invention, the intelligent lifting speed bump device based on non-Newtonian fluid has a lifting mode and characteristics that are different from other speed bumps with mechanical lifting functions. After the upper chamber is emptied of the non-Newtonian fluid, only a layer of wear-resistant speed bump stripe soft film is left on the speed bump above the ground, and the speed bump becomes a "none" mode, while the hard pavement layer provides a flat pavement support flush with other asphalt or cement pavements, solving the problem in other inventions that the trapezoidal or arc-shaped speed bump surface will produce a concave pit on the pavement after the overall structure of the speed bump sinks.

[0012] As a further improvement of the technical solution of the present invention, the non-Newtonian fluid is formed by mixing dispersed phase particles of silicon dioxide powder and dispersed phase medium polyethylene glycol solution.

[0013] As a further improvement of the technical solution of the present invention, the particle size of the silicon dioxide powder is 45±5 nm, the mass fraction is 70%, and the average molecular weight of the polyethylene glycol is 450±50.

[0014] As a further improvement of the technical solution of the present invention, the diaphragm soft film and the wear-resistant speed bump stripe soft film are both made of elastic soft material.

[0015] As a further improvement of the technical solution of the present invention, the diaphragm soft film and the wear-resistant speed bump stripe soft film are both made of styrene-butadiene-styrene block copolymer.

[0016] As a further improvement of the technical solution of the present invention, the holes are evenly distributed in the soft film covering area of ​​the wear-resistant speed bump stripes, the radial size of the holes should not be too large, and it is required to ensure that the smoothness of passing vehicles is not affected, and the number of the holes is determined by the filling rate and extraction rate of the non-Newtonian fluid in the upper cavity.

[0017] As a further improvement of the technical solution of the present invention, the hard road surface layer is bonded to the wear-resistant speed bump stripe soft film by an adhesive, which can effectively improve the waterproof sealing ability of the speed bump.

[0018] As a further improvement of the technical solution of the present invention, the vehicle identification and speed sensor includes a vehicle identification device for distinguishing between motor vehicles, non-motor vehicles and pedestrians, and a speed sensor for measuring the driving speed and acceleration of motor vehicles. The vehicle identification device and the speed sensor feed back the measurement information to the lifting control processor, and intelligent classification management is achieved through the joint action of the vehicle identification device and the speed sensor and the lifting control processor.

[0019] As a further improvement of the technical solution of the present invention, the upper surface of the wear-resistant speed bump stripe soft film is provided with speed bump stripes, which provide a deceleration reminder for both speeding vehicles and non-speeding vehicles.

[0020] Beneficial effects of the present invention: This intelligent lifting speed bump device based on non-Newtonian fluid can realize automatic control switching of the speed bump with or without mode through vehicle identification and speed measurement sensors, lifting control processors, non-Newtonian fluids, and wear-resistant speed bump stripe soft films, and realize intelligent classification management of passing vehicles on sections of road where speed limit or deceleration is required; in particular, for motor vehicles or non-motor vehicles that meet the speed limit requirements, the "none" mode is activated to provide a road environment as if walking on flat ground, solving the problem of "vehicles that abide by traffic rules are passively punished" caused by traditional speed bumps that have long been criticized by people. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the intelligent lifting speed reduction belt device according to an embodiment of the present invention;

[0023] Figure 2 For the embodiment of the present invention Figure 1 A schematic cross-sectional structure diagram of an intelligent lifting speed bump device;

[0024] Figure 3 Schematic diagram of the working process of an embodiment of the present invention.

[0025] in:

[0026] Hard pavement layer 100, holes 101;

[0027] Sealed air chamber box 200;

[0028] Air pump actuation system 300, air pipe 301;

[0029] Diaphragm 400;

[0030] Wear-resistant speed bump stripe soft film 500, upper cavity 501, lower cavity 502;

[0031] Non-Newtonian fluids 600;

[0032] Lift control processor 700; DETAILED DESCRIPTION

[0033] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Reference Figure 1 and Figure 2 An intelligent lifting speed bump device based on non-Newtonian fluid includes a hard pavement layer 100, a closed air chamber box 200, an air pump actuation system 300, a diaphragm soft film 400, at least one wear-resistant speed bump stripe soft film 500, a non-Newtonian fluid 600, a vehicle identification and speed measurement sensor, and a lifting control processor 700.

[0038] The closed air chamber box 200 is installed at the lower end of the hard pavement layer 100, and the closed air chamber box 200 is made of hard material. The closed air chamber box 200 must be made of hard material to ensure that the diaphragm soft membrane 400 has a breathing function under the action of the air pump actuation system 300, so as to squeeze the non-Newtonian fluid 600 in the lower chamber 502 or evacuate the non-Newtonian fluid 600 in the upper chamber 501. The air pump actuation system 300 is installed below the hard pavement layer 100, and the air pump actuation system 300 is connected to the closed air chamber box 200 through the air pipe 301. Preferably, the closed air chamber box 200 is made of stainless steel or other materials. The hard pavement layer 100 is a stainless steel plate with a load-bearing function, which provides normal road support, allowing vehicles that comply with traffic rules to pass as if walking on flat ground, and also provides a road environment without obstacles for pedestrians or non-motor vehicles.

[0039] The non-Newtonian fluid 600, the diaphragm soft film 400, the wear-resistant speed bump stripe soft film 500, the hard road surface layer 100, and the closed air chamber box 200 together constitute a damping shock absorber, so that the present invention has a stronger shock absorption function beyond the characteristics of the non-Newtonian fluid 600. Among them, the holes 101 of the hard road surface layer 100 have the function of damping holes; the air chamber jointly constructed by the diaphragm soft film 400, the closed air chamber box 200, and the air pump actuation system 300 is equivalent to an adjustable accumulator.

[0040] The diaphragm soft membrane 400 is installed in the airtight air chamber box 200, and both ends of the diaphragm soft membrane 400 are sealed and bonded to the lower surface of the hard road surface layer 100. The diaphragm soft membrane 400 cooperates with the air pump actuation system 300 to squeeze the lower chamber 502 or extract the non-Newtonian fluid 600 from the upper chamber 501.

[0041] Among them, a plurality of holes 101 are provided on the hard pavement layer 100, and each wear-resistant speed bump stripe soft film 500 is installed in parallel on the upper surface of the hard pavement layer 100. Preferably, the hard pavement layer 100 is bonded to the wear-resistant speed bump stripe soft film 500 by an adhesive. The diaphragm soft film 400 and the wear-resistant speed bump stripe soft film 500 form a closed inner cavity, which is divided into an upper cavity 501 and a lower cavity 502. The upper cavity 501 and the lower cavity 502 are connected through each hole 101, and the non-Newtonian fluid 600 is stored in the inner cavity. Both the diaphragm soft film 400 and the wear-resistant speed bump stripe soft film 500 are required to be soft in material, but the diaphragm soft film 400 can have a certain degree of stretchability, and the wear-resistant speed bump stripe soft film 500 should not have stretchability.

[0042] The diaphragm soft membrane 400 and the sealed air chamber box 200 together form an air chamber. The air pump actuation system 300 includes an air pump, an air pipe 301 and an air pipe connector. The air chamber is connected to the sealed air chamber box 200 through the air pipe 301, and then the air pump is controlled by the lifting control processor 700.

[0043] In a preferred embodiment, the diaphragm soft film 400 and the wear-resistant speed bump stripe soft film 500 are both made of elastic materials. The diaphragm soft film 400 is a key component for cooperating with the air pump actuation system 300 to realize the "with and without" mode switching of the speed bump, and realizes the extrusion of the non-Newtonian fluid 600 in the lower chamber 502 or the extraction of the non-Newtonian fluid 600 in the upper chamber 501 in a "breathing" mode. The diaphragm soft film is made of elastic materials such as modified tendon bottom materials, which are required to be durable, soft, and have a small elasticity. The diaphragm soft film 400 and the closed air chamber box 200 are sealed and bonded together by pressure strips, rivets, and adhesives. In the closed air chamber box 200, the diaphragm soft film 400 is arranged in a concave shape, and its natural length is the arc of the volume space required by the lower chamber 502 when all the non-Newtonian fluid 600 in the upper chamber 501 just enters the lower chamber 502.

[0044] Specifically, the wear-resistant speed bump stripe soft film 500 is made of a material such as modified tendon, which is required to be wear-resistant and soft, but not stretchable. The upper surface of the wear-resistant speed bump stripe soft film 500 is provided with bright speed bump stripes, which serves to provide a deceleration reminder for both speeding vehicles and non-speeding vehicles. The wear-resistant speed bump stripe soft film 500 and the hard road surface layer 100 are sealed by adhesive, rivets, and pressure strips.

[0045] In this embodiment, the diaphragm soft film 400 and the wear-resistant speed bump stripe soft film 500 are both made of styrene-butadiene-styrene block copolymer.

[0046] In this embodiment, the hard pavement layer 100 can be made of stainless steel or other materials, and installed by sunken riveting, flush with the connected asphalt or cement pavement. The selected stainless steel plate needs to have sufficient strength to bear the rolling of vehicles, and the upper surface should be smooth and flat. When the upper cavity 501 is emptied of the non-Newtonian fluid 600 and only a layer of wear-resistant speed bump stripe soft film 500 remains, it provides normal road support, allowing vehicles that comply with traffic rules to pass as if walking on flat ground, and also provides a road environment without obstacles for pedestrians or non-motor vehicles. The holes 101 on the hard pavement layer 100 are set to be circular, and the holes 101 are evenly distributed in the area covered by the wear-resistant speed bump stripe soft film 500. The size of the holes 101 is generally selected to be 5 cm in diameter. The circular hole ensures that when there is only one layer of wear-resistant speed bump stripe soft film 500 left on the speed bump, there will be no bumps for vehicles that follow the traffic speed regulations. The number of holes 101 is determined by the filling rate and extraction rate of the non-Newtonian fluid 600 in the upper cavity 501.

[0047] The vehicle identification and speed sensors are installed on both sides of the hard road surface layer 100. The vehicle identification and speed sensors are connected to the lifting control processor 700 by electrical signals. The lifting control processor 700 controls the air intake and exhaust volume of the air pump actuation system 300. By adjusting the air pressure, the non-Newtonian fluid 600 in the lower chamber 502 between the diaphragm soft film 400 and the hard road surface layer 100 is squeezed, or the non-Newtonian fluid 600 in the upper chamber 501 between the wear-resistant speed bump stripe soft film 500 and the hard road surface layer 100 is extracted. The lifting processing controller 700 has data analysis capabilities and control decision-making capabilities. According to the information fed back by the vehicle identification and speed measurement sensors, combined with the speed limit requirements of the road section, the air pump actuation system 300 is controlled to work.

[0048] As a preferred embodiment, the non-Newtonian fluid 600 is a mixture of dispersed phase particles of silica powder and dispersed phase medium polyethylene glycol solution. The particle size of the silica powder is 45±5nm, the mass fraction is 70%, and the average molecular weight of the polyethylene glycol is 450±50. The non-Newtonian fluid 600 has the liquid-solid two-phase conversion characteristics of "strong when encountering strong and soft when encountering slow" under impact. That is, when the vehicle passes quickly and impacts the speed bump, the speed bump is basically not deformed. At this time, the non-Newtonian fluid 600 has solid characteristics, making the speed bump equivalent to a solid structure; when the wheel slowly rolls over the speed bump, the non-Newtonian fluid inside the speed bump has liquid characteristics, so that the speed bump is rolled and deformed greatly and sheared, and even only a layer of wear-resistant speed bump stripe soft film 500 is left, so that the wheel can touch the ground without a sense of impact. Non-Newtonian fluid 600 is used to cushion the impact of wheels on speed bumps, reducing major traffic accidents such as vehicle rollovers caused by the hard impact of traditional speed bumps. At the same time, the liquid-solid two-phase conversion characteristics of non-Newtonian fluids and the impact characteristics of "strong when encountering strong forces and soft when encountering slow forces" can guide drivers to develop the awareness and habit of active deceleration, thereby improving road safety.

[0049] The vehicle identification and speed sensor includes a vehicle identification device for distinguishing motor vehicles from non-motor vehicles and pedestrians and a speed sensor for measuring the speed and acceleration of motor vehicles. The vehicle identification device and the speed sensor feed back the measurement information to the lifting control processor 700.

[0050] In an optional embodiment, the vehicle identification and speed sensor can be machine vision, infrared sensing, etc., and specifically includes two parts: the first part is motor vehicle identification based on machine vision, which can distinguish motor vehicles from non-motor vehicles and pedestrians; the second part is motor vehicle speed and acceleration detection based on infrared sensing, etc. It is placed on the roadside of the lane facing the speed bump, and the classification and identification of the oncoming vehicles is realized within 100 meters from the speed bump, and the speed and acceleration of the motor vehicle are obtained at about 30 meters from the speed bump, and the measurement information is fed back to the lifting control processor, which performs data analysis and establishes control decisions according to the set speed limit and the working mode of the system to control the air pump actuation system.

[0051] There are two types of driving conditions on roads where speed limit or deceleration is required:

[0052] Working condition 1: The object is a speeding motor vehicle;

[0053] Working condition 2: The object is a motor vehicle or non-motor vehicle or pedestrian that is driving normally in compliance with traffic regulations.

[0054] For these two types of working conditions, the present invention realizes the switching of the mode with or without speed bump based on intelligent control, and realizes the intelligent classification management working mode. Figure 3 Specifically, in the lane where the speed bump is located, the binocular vision system detects oncoming vehicles within 100 meters of the speed bump, and the information is fed back to the lifting control processor 700. After data analysis, if the identified object is a non-motor vehicle, a pedestrian, or a non-similar moving object, it is classified as working condition 2. If the identified object is a motor vehicle, the infrared sensor at a position of about 30 meters is further activated to measure the vehicle's driving speed and acceleration. The information is fed back to the lifting control processor 700. After data analysis, if the vehicle does not exceed the speed limit or based on the deceleration calculation, it is fully confirmed that it will not exceed the speed when passing the speed bump, it is classified as working condition 2. If it exceeds the speed limit or will exceed the speed based on the deceleration calculation, it is classified as working condition 1.

[0055] For working condition 2, if the speed bump is already in a state where the non-Newtonian fluid 600 in the upper chamber 501 is evacuated, the entire system does not need further processing, and the system state only needs to return to the vehicle identification link. If the upper chamber 501 is full of the non-Newtonian fluid 600 or is in the extraction state, the lifting control processor 700 controls the air pump actuation system 300 to completely extract the non-Newtonian fluid 600 in the upper chamber 501, and then the system state returns to the vehicle type identification link.

[0056] For working condition 1, the lifting control processor 700 controls the air pump actuation system 300 to squeeze the non-Newtonian fluid 600 in the lower chamber 502 through the diaphragm soft film 400, so that it passes through the holes 101 of the hard road surface layer 100, and fills the upper chamber 501 before the vehicle passes through the speed bump, so that the wear-resistant speed bump stripe soft film 500 bulges to form the speed bump structure shape, which has all the functions of the traditional speed bump. Then, the vehicle passes through the speed bump, and finally after the vehicle passes, the system status returns to the vehicle type identification link. Compared with traditional speed bumps, the characteristics of the non-Newtonian fluid 600 and the damping shock absorber characteristics of the entire system can avoid the impact damage to the vehicle caused by hard collisions and reduce possible safety accidents.

[0057] This intelligent lifting speed bump device based on non-Newtonian fluid can realize intelligent lifting function. The intelligent lifting function is realized by the lifting control processor 700, the air pump actuation system 300, the diaphragm soft film 400 and the non-Newtonian fluid 600. The non-Newtonian fluid 600 is squeezed to fill the upper chamber 501 and bulge into a normal speed bump shape, or the non-Newtonian fluid 600 in the upper chamber 501 is evacuated, so that only a layer of wear-resistant speed bump stripe soft film is left on the hard road surface layer 100, thereby realizing the switching of the speed bump with or without mode. The lifting function of this device is not a simple adjustment of the bulge height, and there is no problem of the speed bump surface sinking below the ground. Its lifting characteristics are different from other speed bumps with mechanical lifting functions, and no concave pits will be generated on the road surface after the trapezoidal or arc-shaped speed bump surface descends.

[0058] The intelligent lifting speed bump device realizes intelligent classification management in the road section where speed limit or deceleration is required through the joint action of vehicle identification and speed measurement sensor and lifting control processor 700. The classification of motor vehicles (such as cars and motorcycles) and non-motor vehicles (such as bicycles and sanitation trailers) and pedestrians is realized by vehicle identification technology, and the speed and acceleration of motor vehicles are further measured by speed measurement sensor, and the measurement information is fed back to the lifting control processor, and the "with or without" mode switching of the speed bump is realized by active control. If it is confirmed that it is a speeding motor vehicle, the intelligent lifting speed bump device based on non-Newtonian fluid 600 is started, providing all the functions of reminder and speed limit of traditional speed bumps; for normal driving vehicles, non-motor vehicles or pedestrians that meet the speed limit requirements, a deceleration reminder is provided, and at the same time, a road driving environment like walking on flat ground is provided to avoid the impact damage of the speed bump on the vehicle, and provide better passenger comfort and safe passability. In particular, it can solve the long-standing problem of "normal vehicles passively punished" that is inevitably brought about by traditional speed bumps.

[0059] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An intelligent lifting speed bump device based on non-Newtonian fluid, characterized in that: include A hard pavement layer (100), wherein a plurality of holes (101) are provided on the hard pavement layer (100); A sealed air chamber box (200), wherein the sealed air chamber box (200) is installed at the lower end of the hard pavement layer (100), and the sealed air chamber box (200) is made of a hard material; An air pump actuation system (300), the air pump actuation system (300) being installed below the hard pavement layer (100), the air pump actuation system (300) being connected to the closed air chamber box (200) via an air pipe (301); A diaphragm soft film (400), wherein the diaphragm soft film (400) is installed in the closed air chamber box (200), and both ends of the diaphragm soft film (400) are sealed and bonded to the lower surface of the hard road surface layer (100); At least one wear-resistant speed-strip stripe soft film (500), each of the wear-resistant speed-strip stripe soft films (500) is installed in parallel on the upper surface of the hard road surface layer (100), the diaphragm soft film (400) and the wear-resistant speed-strip stripe soft film (500) form a closed inner cavity, the inner cavity is divided into an upper cavity (501) and a lower cavity (502), the upper cavity (501) and the lower cavity (502) are connected through holes (101), and the upper surface of the wear-resistant speed-strip stripe soft film (500) is provided with speed-strip stripes; A non-Newtonian fluid (600), wherein the non-Newtonian fluid (600) is stored in the inner cavity; Vehicle identification and speed measurement sensors, the vehicle identification and speed measurement sensors being installed on both sides of the hard road surface layer (100); A lifting control processor (700), the vehicle identification and speed measurement sensor is electrically connected to the lifting control processor (700); the lifting control processor (700) controls the air intake and exhaust volume of the air pump actuation system (300), and squeezes the non-Newtonian fluid (600) in the lower chamber (502) between the diaphragm soft film (400) and the hard road surface layer (100) or extracts the non-Newtonian fluid (600) in the upper chamber (501) between the wear-resistant speed bump stripe soft film (500) and the hard road surface layer (100) through air pressure adjustment; The vehicle identification and speed sensor comprises a vehicle identification device for distinguishing motor vehicles from non-motor vehicles and pedestrians and a speed sensor for measuring the speed and acceleration of the motor vehicle. The vehicle identification device and the speed sensor feed back the measurement information to the lifting control processor (700).

2. The intelligent lifting speed bump device based on non-Newtonian fluid according to claim 1 is characterized in that: The non-Newtonian fluid (600) is formed by mixing dispersed phase particles of silicon dioxide powder and dispersed phase medium polyethylene glycol solution.

3. The intelligent lifting speed reduction belt device based on non-Newtonian fluid according to claim 2 is characterized in that: The particle size of the silicon dioxide powder is 45±5 nm, and the mass fraction is 70%; the average molecular weight of the polyethylene glycol solution is 450±50.

4. The intelligent lifting speed bump device based on non-Newtonian fluid according to claim 1 is characterized in that: The diaphragm soft film (400) and the wear-resistant speed bump stripe soft film (500) are both made of elastic soft material.

5. The intelligent lifting speed bump device based on non-Newtonian fluid according to claim 4 is characterized in that: The diaphragm soft film (400) and the wear-resistant speed bump stripe soft film (500) are both made of styrene-butadiene-styrene block copolymer.

6. The intelligent lifting speed bump device based on non-Newtonian fluid according to claim 1 is characterized in that: The holes (101) are evenly distributed in the coverage area of ​​the wear-resistant speed-reducing stripe soft film (500), and the number of the holes (101) is determined by the filling rate and extraction rate of the non-Newtonian fluid (600) in the upper chamber (501).

7. The intelligent lifting speed bump device based on non-Newtonian fluid according to claim 1 is characterized in that: The hard road surface layer (100) and the wear-resistant speed bump stripe soft film (500) are sealed and bonded by an adhesive.

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