204 results about "Speed bump" patented technology

The invention discloses a vehicle damping module, and relates to the technical field of vehicle damping, the vehicle damping module comprises a road condition sensing unit, the output end of the road condition sensing unit is in communication connection with a prediction control unit, the output end of the prediction control unit is electrically connected with an actuator assembly, and the prediction control unit is internally provided with a control algorithm. The control algorithm is based on the real-time speed of the vehicle, the characteristic parameters and a pre-stored vehicle dynamics model. According to the application, the road condition sensing unit fuses multi-source information and accurately recognizes and quantifies front road condition features, and the prediction control unit accurately calculates the time point when the wheels make contact with an obstacle based on a dynamic model and the real-time vehicle speed, so that precious pre-adjustment time is reserved for an execution mechanism; the damping coefficient of the electromagnetic shock absorber and the internal pressure intensity of the self-adaptive stiffness spring assembly can be adjusted to the optimal state before impact occurs, so that the impact load generated when the electromagnetic shock absorber passes through pits and deceleration strips is greatly smoothed, and the riding comfort is remarkably improved.

The invention discloses a device and a system for risk identification and early warning of an expressway operation area. The system comprises a portable pressure-sensitive deceleration strip, an integrated intelligent traffic cone and an engineering early warning vehicle, the two portable pressure-sensitive deceleration strips are arranged at the first-level early warning boundary and the second-level early warning boundary in front of the integrated intelligent traffic cone on the upstream of the operation area respectively and used for sending alarm signals to other associated equipment when it is detected that a vehicle on the high-speed early warning lane enters the early warning area; the integrated intelligent traffic cone is used for configuring integrated modules such as a monitoring camera, an audible and visual alarm and a character notice board according to an early warning effect when the traffic cone is automatically placed at a set position so as to identify risks inside and outside an operation area and perform early warning; and the engineering early warning vehicle is used for assisting in identifying risks inside and outside the operation area, processing early warning information and slowing down collision. By constructing the device and the system for identifying and early warning the risks of people, vehicles and equipment in the expressway operation area, the external vehicle intrusion risk and the internal personnel and equipment risk in the operation area can be actively found, an alarm prompt is given before the risks come, workers in the operation area are guided to rapidly evacuate, and casualties caused by accidents are reduced.

Embodiments of the present disclosure relate to ground surface estimation using localized surface fitting. A three-dimensional (3D) surface structure (e.g., a road surface profile) may be estimated using a nonlinear optimization to fit height values to (e.g., accumulated, bias-corrected) LiDAR detections (e.g., sampled in localized regions along one or more predicted trajectories). For example, LiDAR data (e.g., detected 3D point clouds) may be ego-motion compensated, corrected for measurement bias, accumulated, and sampled along one or more predicted trajectories, and the height of each trajectory point may be fitted to the heights of the corresponding sampled points using a nonlinear optimization. As such, the resulting road surface profile (e.g., modeled along the wheel track(s)) may be provided to an adaptive suspension control system to modulate the damping characteristic of the suspension system to counteract indentations (e.g., potholes) or protrusions (e.g., speed bumps) represented in the road surface profile.

The invention discloses an intelligent access control anti-collision barrier gate, and particularly relates to the technical field of access control barrier gates, the intelligent access control anti-collision barrier gate comprises a base, a case is fixed at the top end of the base, a blocking piece is arranged on one side of the case, a deceleration strip is arranged at the bottom of the blocking piece, and an automatic license plate recognizer is fixed at the top end of the base through a mounting frame and used for recognizing license plate information of a vehicle. A radar velocimeter is fixed on the mounting frame and is used for acquiring the driving speed and acceleration data of a vehicle in the process of approaching a barrier gate in real time, and a panoramic camera is fixed at the top end of the case and is used for shooting the driving track of the vehicle so as to judge whether the vehicle maliciously intrudes into a community or not. The vehicle behavior can be intelligently judged, so that the registration release or blocking interception process is triggered, the safety and the passing efficiency are both considered, the daily life of residents is facilitated, and the internal management of a community is facilitated.

The invention relates to the technical field of road safety facilities, in particular to a gradient effect concave deceleration strip visual grading mark design method which comprises the steps that S1, basic design data of a target road scene are obtained, and the basic design data comprise a target limited vehicle speed numerical value and a total length numerical value of a deceleration area; s2, according to the basic design data, geometric configuration parameters of a plurality of concave speed reduction units sequentially arranged in the vehicle advancing direction are calculated, and the geometric configuration parameters comprise the concave depth numerical value of each concave speed reduction unit and the distance numerical value between every two adjacent concave speed reduction units; the concave depth value obtained through calculation presents a gradually increasing trend in the vehicle advancing direction. According to the method, the concave speed reduction units with the gradually-increased depth and the gradually-decreased interval are configured through an algorithm, the overspeed vehicle is forced to decelerate through non-linear amplified composite vibration, and the control efficiency of road section speed limiting is improved.

The application provides a speed bump energy absorption working condition recognition method and system, and relates to the technical field of intelligent transportation systems.The method collects vehicle weight, speed and vertical acceleration data in real time through a laser radar and a load cell, constructs a full-quantity feature data set, first calculates kinetic energy change and vertical impact energy, and after the cumulative energy reaches a threshold, stores the speed and acceleration data before and after the speed bump according to vehicle weight, performs Fourier transform on the acceleration data, extracts the low-frequency energy proportion, and constructs a quadratic regression model combined with the speed before and after the speed bump to predict the speed after passing through.The energy proportion abnormal threshold is set by statistical stratification of the mean and standard deviation of the energy proportion database, and when the low-frequency energy proportion of a new vehicle is lower than the energy proportion abnormal threshold and the speed prediction error is greater than or equal to 15%, it is determined that the energy absorption structure fails, and the dynamic monitoring and accurate diagnosis of the health state of the speed bump are realized.

A control system for controlling vehicle speed to navigate a speed bump comprises controllers configured to receive speed bump information from a geographic information system indicative of a position

The invention relates to the technical field of deceleration hillocks, and discloses a stable deceleration hillock and a pavement process of the deceleration hillock, the stable deceleration hillock comprises a plurality of frameworks, asphalt layers are arranged outside the frameworks, and the plurality of frameworks and the asphalt layers outside the frameworks can be spliced to form the deceleration hillock; the framework is hollow, a separation assembly is arranged in the framework, the separation assembly comprises two separation rods, and the two separation rods are used for separating the joint of an asphalt layer and a road surface; the separation assembly comprises a jacking mechanism; butt joint mechanisms are arranged at the two ends of the framework. The deceleration hill can be formed by splicing the multiple frameworks and the asphalt layers outside the frameworks, the whole asphalt layers are firmly bonded to the road surface through the bonding materials in the four square grooves in the bottoms of the asphalt layers, stable installation of the asphalt layers is achieved, and compared with a conventional mode that fasteners are knocked into the road surface for installation, damage to the road surface is effectively avoided.

A portable speed bump assembly includes a dolly and a spool that is rotatably attached to the dolly. A speed bump unit is rolled around the spool and the speed bump unit is played outwardly from the spool when the spool is rotated in a second direction to laid the speed bump unit across a roadway. The speed bump unit compels traffic on the roadway to slow down while driving over the speed bump unit thereby reducing the average speed of the traffic. The speed bump unit is rolled around the spool when the spool is rotated in the first direction for storing the speed bump unit. A drive unit is attached to the dolly and the drive unit is in mechanical communication with the spool for rotating the spool in either the first direction or the second direction.

The invention belongs to the technical field of speed bump design, and discloses a road surface speed bump optimization design method based on vehicle-road coupling vibration response, which comprises the following steps of: determining asymmetric segmented curve design of a speed bump; resolving analytic expressions of curves of different structural sections of the deceleration strip; establishing a speed bump combination curve scheme, and combining the cosine segment and the parabolic segment according to different horizontal projection lengths; establishing a coupling model among the wheels, the suspension system, the vehicle body and the road surface; the height of the speed bump is set to obtain different working conditions under various curve combination schemes; and screening an optimal speed bump scheme according to a vibration response result. According to the invention, the traditional speed bump design is broken through, and technical optimization is realized on multiple aspects such as speed reduction control, driving comfort and retrograde driving warning.

The application discloses a speed bump recognition method and system, real-time vehicle information is acquired, the vehicle information at least includes the vertical acceleration signal of the vehicle body, the vertical acceleration signal of the vehicle body is filtered through a pre-designed filter set, the filtering result of the effective speed bump candidate identification is obtained, if the filtering result of the effective speed bump candidate identification meets the speed bump recognition condition, the target speed bump identification is obtained from the filtering result of the effective speed bump candidate identification, and the target speed bump identification is determined as the speed bump area, so as to ensure the accuracy of the acquired speed bump area, improve the vehicle auxiliary control, and the speed bump recognition mechanism is used for preventing the same speed bump from being repeatedly identified when the left and right wheels of the vehicle do not cross the speed bump at the same time.

Vehicle display device (10) which displays a predetermined image in a display area (24, 25, 26) indicating a forward view of a vehicle (12), comprising: a memory (34); and a processor (30) connected to the memory (34), wherein the processor (30) is configured to: to identify a lane (70) on which the vehicle (12) is traveling; detect a position (O) of the vehicle (12) relative to the lane (70); based on the lane (70) and the position (O) of the vehicle (12) detected by the processor (30), determine whether there is a possibility that the vehicle (12) is deviating from the lane (70); and In a case where it has been determined that there is a possibility that the vehicle (12) may deviate from the lane (70), an image of a stereoscopic object (B) arranged along the lane (70) is to be displayed in the display area (24, 25, 26). characterized by the fact that the processor (30) is further configured to display the image of the stereoscopic object (B) in the display area (24, 25, 26) such that: the stereoscopic object (B) appears to move along the track (70) from a background side to a foreground side of the display area (24, 25, 26); and the stereoscopic object (B), whose movement has stopped at the foreground of the display area (24, 25, 26), appears to vibrate to simulate the movement of the vehicle (12) over a three-dimensional object such as a rumble strip, the image of the stereoscopic object (B) is caused to oscillate in a vertical, lateral or oblique direction, enabling the occupant to experience a realistic sensation as if the vehicle were vibrating as a result of driving over a rumble strip.

The utility model discloses a folding speed brake, which relates to the technical field of speed brakes and comprises a speed brake main body, one end of the speed brake main body is connected with a connecting mechanism, one end of the connecting mechanism is connected with an auxiliary plate, and the speed brake main body comprises a movable plate. Through the cooperation of the speed brake main body, the open groove, the reflector, the movable plate, the reflective coating, the connecting column, the spring, the limiting sleeve, the movable groove and the first non-slip mat, the light of an automobile can be reflected through the arrangement of the reflector and the reflective coating, a driver is reminded that a speed bump exists on the road surface, the movable plate is jacked up through the spring, and the speed bump is prevented from falling off. When an automobile passes through the surface of the movable plate, the movable plate has a certain sinking space due to the elastic force of the spring, so that the passing automobile cannot be too bumpy, and the purpose of enabling the driver to pass through in a decelerating mode is effectively achieved.

The application discloses a road damage detection method and device based on crack morphology, equipment and a storage medium, and relates to the technical field of intelligent transportation. The method comprises the following steps: acquiring a visible light image, a polarized light image, three-dimensional terrain data and material reflectivity data of a target road surface to obtain a multi-source multi-modal data set; performing interference separation on the multi-source multi-modal data set to obtain a crack candidate data set; performing multi-dimensional constraint screening and region elimination on the crack candidate data set to obtain a target crack region; performing space-time correlation morphology tracking on the target crack region to extract three-dimensional morphology parameters and continuity indexes of the target crack; inputting the three-dimensional morphology parameters and the continuity indexes into a road condition-damage correlation model to obtain road damage grade and crack development trend evaluation results, and completing road damage detection. The application can accurately detect road damage of crack morphology in complex road conditions with interference objects such as repair marks, manhole covers, speed reduction belts and road markings.

The present application relates to the technical field of vehicle control, and discloses a vehicle control method and device under the working condition of a speed bump, a vehicle, a medium and a program. When a speed bump exists in front of the vehicle, the first distance between the front wheel and the speed bump and the initial state parameters of the vehicle are used to determine the second distance between the front wheel and the speed bump when the adjustment starts in the future. When the current distance is less than the second distance, the front axle motor torque is reduced, the rear axle motor torque is increased, and the front and rear suspension dampings are adjusted to prevent the front wheel from skipping forward when it passes through the speed bump. When the front wheel passes through the speed bump, the front axle motor torque is increased, the rear axle motor torque is reduced, and the front and rear suspension dampings are adjusted to prevent the rear wheel from skipping forward when it passes through the speed bump. Finally, when the rear wheel passes through the speed bump, the vehicle torque and damping are restored to the initial state, ensuring the consistency of the state before and after the vehicle passes through the speed bump, thereby improving the driving experience of the user.

The application relates to the technical field of traffic pavement speed reduction belts, in particular to a detachable one-way vehicle speed reduction warning device which comprises a one-way vehicle speed reduction belt body, the one-way vehicle speed reduction belt body comprises a plurality of one-way vehicle speed reduction belt units, each one-way vehicle speed reduction belt unit comprises a speed reduction belt horizontal part component, the bottom center position of the speed reduction belt horizontal part component is movably connected with the ground through a rotating shaft; a forced one-way travel part component is arranged on the left side of the speed reduction belt horizontal part component; and a rubber speed reduction belt component is arranged on the right side of the speed reduction belt horizontal part component. The application can provide speed reduction belts with different vibration senses for different vehicle speeds, can realize strong vibration sense for high-speed vehicles and slight vibration sense for low-speed vehicles, can be disassembled and assembled according to different terrains and different functional requirements, can adapt to various terrains and functional requirements, can realize energy-saving and environment-friendly functions of partial damage and partial replacement, and is suitable for various places such as garage entrances and one-way roads.

The utility model discloses a nitrogen making machine with an improved tower body and silencer structure. The nitrogen making machine is characterized in that an adsorption tower also comprises a spiral molecular sieve placing device for placing a molecular sieve, a molecular sieve discharge port connected with the molecular sieve placing device, and a screen arranged at the joint of a gas inlet end and the molecular sieve placing device; the filter system comprises a filter screen mounted above the air inlet end and activated carbon mounted above the filter screen; the noise reduction system comprises a speed bump mounted above the activated carbon, noise reduction cotton mounted above the speed bump and a plurality of layers of mesh partitions which are mounted above the noise reduction cotton and below the outlet end and are distributed in a staggered manner, and the noise reduction cotton adopts a distribution structure arranged in a snakelike manner; through the arrangement of the spiral molecular sieve placing device, the adsorption time of air in the adsorption tower and the length of an adsorption channel are increased, the adsorption rate of molecular sieves is improved, the purity of nitrogen is improved, the use quantity of the molecular sieves is reduced, and the cost is saved.

Methods for preventing buckling of a vehicle are disclosed, wherein the vehicle comprises a cab (2) and at least one trailer (3) connected to the cab (2) by at least one fifth wheel coupling assembly. A controller (1) is configured to obtain a differential speed between the cab (2) and the trailer (3) based on a first and a second set of vehicle parameters, and to control the speed of the vehicle if the obtained differential speed is not within a differential speed threshold range.The present invention can be implemented in situations where, for example, due to slopes, speed bumps, uneven or slippery roads, the speed of the cab (2) is lower than the speed of the trailer (3), wherein continued momentum of the trailer (3) pushes the cab (2), which has a lower speed compared to the trailer.

The application provides a road surface state recognition method and device, and solves the problems of single road surface state recognition category, coarse result granularity and inability to distinguish specific road surface abnormal types caused by dependence on simple threshold judgment and shallow features in the prior art. The method comprises the following steps: acquiring a vertical vibration acceleration data segment of a vehicle in operation; extracting a characteristic value according to a preset optimal feature subset, wherein the subset comprises a frequency domain peak value and a spectrum energy; inputting the characteristic value into a classification model to obtain a recognition result, wherein the model is obtained by training based on data comprising at least three road surface state labels. Through fixed feature optimization, the application realizes fine recognition of multiple states such as well frame difference, expansion joint and deceleration strip, and significantly improves the calculation efficiency while ensuring the accuracy.

The invention relates to an impact load-oriented electro-hydraulic servo active suspension feedback linearization sliding mode robust control method, which belongs to the technical field of vehicle active suspension and electro-hydraulic servo control, and comprises the following steps of: firstly, establishing a quarter vehicle two-degree-of-freedom active suspension model; the method comprises the following steps: step 2, constructing a nonlinear dynamic model of the electro-hydraulic servo actuator of the valve-controlled cylinder; step 3, designing a feedback linearization sliding mode composite controller and giving a stability proof; and step 4, carrying out controller parameter setting and simulation comparison. According to the feedback linearization sliding mode robust control method provided by the invention, the nonlinearity and parameter uncertainty of the actuator can be effectively compensated under the impact working conditions of a deceleration strip and the like, the piston displacement tracking error and sliding mode buffeting are remarkably reduced, sprung mass vibration is reduced, the vehicle driving smoothness and attitude stability are improved, and the method is suitable for large-scale popularization and application. The method is suitable for the field of vehicle hydraulic active suspension control.

The invention relates to the technical field of automobile control, in particular to an automobile electric drive abnormal sound control method, device and equipment and a storage medium. The method comprises the following steps: monitoring a wheel speed change parameter of a wheel, and calculating a wheel speed fluctuation parameter of the wheel according to the wheel speed change parameter; the abnormal sound condition of electric drive is judged according to the wheel speed fluctuation parameters; and the torque distribution strategy of the motor drive assembly is adjusted according to the abnormal sound condition of the electric drive. According to the method, the electric drive torque output before the dynamic decision of the wheel speed fluctuation parameter is quantified in real time, the low-amplitude impact working condition (such as passing of a daily deceleration strip) is accurately covered, the small torque is instantly output to suppress gear knocking when the wheel speed fluctuation reaches the abnormal sound threshold value, and the defect that low-amplitude impact cannot be processed due to energy consumption constraint in a traditional scheme is overcome; and meanwhile, torque output is prohibited when fluctuation is not larger than a threshold value, energy consumption economy is effectively maintained, and abnormal sound radical treatment and optimal energy consumption balance under all working conditions are achieved.

The utility model relates to the technical field of deceleration strips, and discloses a parking lot deceleration strip device which comprises a metal deceleration strip bottom shell, a longitudinal supporting frame is fixedly installed in the metal deceleration strip bottom shell, and a module assembling mechanism and a corner limiting mechanism are arranged on the top of the metal deceleration strip bottom shell. According to the deceleration strip device for the parking lot, through the damping buffer layer arranged at the top of the metal deceleration strip bottom shell, impact force and noise can be reduced through the damping buffer layer, noise generated when a vehicle rolls is reduced, the environment is prevented from being affected, meanwhile, independent replacement can be achieved when local damage occurs through a modular installation mode, and the maintenance cost is reduced; the installation mode that the deceleration strip is embedded into the external positioning frame can guarantee that the deceleration strip is flush, meanwhile, the combination mode of the metal deceleration strip bottom shell and the damping buffer layer improves durability, the impact resistance effect is improved, protrusions can be formed on the top of the damping buffer layer through the formed concave stripes, the road holding force of wheels is increased, and slipping is avoided.

The invention relates to a vehicle kinetic energy collecting and damping device. The vehicle kinetic energy collecting and damping device comprises a deceleration strip, a support, a transmission shaft, a one-way shaft clutch and a generator. The deceleration strip is connected with the support through a spring and connected with the disc through a connecting rod. The one-way clutch consists of an outer ring, a ratchet wheel and a wedge block; the one-way clutch and the disc are fixed on the same transmission shaft and are connected with the bevel gear wheel; the large bevel gear is connected with the lower small bevel gear in a meshing manner; the small bevel gear is connected with an input shaft of the generator. The deceleration strip module serves as energy input and collects kinetic energy generated when a vehicle runs. The suspension module drives the deceleration strip to reset upwards after the vehicle leaves the deceleration strip. The generator module can convert kinetic energy collected by the deceleration strip module into electric energy, rectify current and store the electric energy in a battery. The invention belongs to mechanical transmission power generation and is used for recovering mechanical energy loss generated when an automobile passes through the deceleration strip, and the energy utilization rate is increased.

The invention discloses a vehicle driving control method and system, automatic driving equipment and a readable storage medium, and belongs to the technical field of vehicle control, and the method comprises the steps: planning a driving path based on the current position of a vehicle; marking a convex part on the road surface based on the driving path; obtaining a static distance based on the current position of the vehicle and the convex part; obtaining a dynamic distance based on the movement parameters of the vehicle and the static distance; in response to the dynamic distance being less than the distance threshold, a moving speed of the vehicle is adjusted. According to the vehicle running control method, the moving speed of the vehicle is adjusted based on the moving parameters of the vehicle by calculating the static distance and the dynamic distance between the vehicle and the protruding part, so that the vehicle can pass through the speed bump at the appropriate speed, the shaking amplitude of the vehicle body is reduced, and noise generated when the vehicle passes through the speed bump is reduced.

This invention relates to an automatic detection method, system, electronic device, and medium for road potholes and speed bumps, belonging to the fields of intelligent transportation, vehicle safety, and autonomous driving technology. The method includes: receiving data packets sent by a vehicle; identifying target objects in the data packets using a target detection model and calculating the geographic coordinates of the target objects based on their three-dimensional coordinates; performing spatial clustering and voting-based data fusion on the geographic coordinates of target objects uploaded from different vehicle terminals to determine the location of the target objects; updating a digital map containing the target objects based on their location; and sending the digital map to the vehicle via OTA (Over-The-Air). The automatic detection method for road potholes and speed bumps provided by this invention utilizes the powerful computing capabilities of the cloud to generate a high-precision global map of road potholes and speed bump distribution. This map is then distributed to vehicles via OTA, enabling vehicles to plan ahead and achieve autonomous and smooth deceleration or avoidance, thus improving safety and comfort.

The embodiment of the application provides an automatic parking method, device and electronic equipment, the method comprises the following steps: determining the relative position between the driving shaft of a target vehicle and a target deceleration strip when the target vehicle is located at a first starting position; if the relative position does not satisfy a preset passing condition, controlling the target vehicle to drive to a second starting position from the first starting position in a far direction, wherein the far direction is the direction of the driving shaft relative to the target deceleration strip; and controlling the target vehicle to drive to a target parking space from the second starting position via the target deceleration strip. Thus, the target vehicle successfully crosses the deceleration strip and parks in the target parking space, and the safety of the target vehicle parking is improved.

The invention discloses a parking lot vehicle access management device, and relates to the technical field of vehicle access management devices. Comprising a strip-shaped base, the width direction of the strip-shaped base is perpendicular to the extending direction of a road, and the cross section in the width direction is in a symmetrical protruding shape; a strip-shaped cavity formed in the length direction is formed in the middle of the top face of the strip-shaped base, rolling wheels are arranged in the strip-shaped cavity, a movable base is arranged in the strip-shaped cavity, and rolling wheels are installed at the bottom of the movable base and roll in the rolling wheel grooves. By arranging the strip-shaped base, the shear type telescopic frame and other structures, the structures can be arranged at the intersection of the parking lot, in the open state, the movable frame is close to one side of the first vertical frame, the shear type telescopic frame is in the contraction state, at the moment, the strip-shaped base can be used as a deceleration strip, and when a certain road section needs to be closed, the deceleration strip works based on the movement driving part; and the movable seat image is driven to move in the direction away from the first vertical frame, so that the shear type telescopic frame is unfolded, and the road is closed.

The utility model discloses a municipal road deceleration buffer strip which comprises a deceleration strip body, a top face is arranged on the top of the deceleration strip body, inclined faces are arranged on the two sides of the top face, and the municipal road deceleration buffer strip is characterized in that groove assemblies used for being fixed to the ground are arranged in the inclined faces, and a plurality of light-reflecting spikes are installed in the inclined faces. The reflective spike is arranged on the slope, the anti-skid nails located on the slope are arranged on the periphery of the reflective spike, the reflective spike is installed on the slope, and the anti-skid nails are arranged on the periphery of the reflective spike, so that a good warning effect can be achieved when the sight of a person is poor; and the anti-skid spikes have the effects of decelerating the vehicle and isolating the reflective spike, so that the service life of the reflective spike is prolonged.