66 results about "Road crossing" patented technology

The invention relates to a vehicle safety control method, a vehicle and electronic equipment, and belongs to the technical field of vehicle safety, and the method comprises the steps: obtaining front multi-source sensing information, and judging whether a target pedestrian has a road crossing intention through a multi-mode intention prediction model based on the front multi-source sensing information; when it is determined that the target pedestrian has the intention of crossing the road, performing lateral risk identification based on the acquired lateral target motion data and pedestrian motion data to obtain a lateral risk level; performing rear risk identification based on the obtained rear target motion data to obtain a rear risk level; determining a comprehensive risk level based on a preset mapping relation according to the lateral risk level and the rear risk level; and according to the comprehensive risk level, performing control configuration on at least one of the vehicle exterior voice module, the vehicle exterior light module and the vehicle exterior interaction screen, and executing a corresponding vehicle exterior interaction control strategy.

The application discloses a vehicle braking method, device, equipment and storage medium. In the process of driving a target vehicle, if the state of a traffic signal at a road intersection changes to prohibition of passing after a first preset time period, a first distance between the target vehicle and a stop line of the intersection is determined. If the first distance is not less than a first preset threshold, a first braking force is determined to brake the target vehicle. If the first distance is less than the first preset threshold, it is determined whether the rear wheel of the target vehicle can cross the stop line of the intersection within the first preset time period without changing the current speed. If yes, a continue driving signal is sent to the target vehicle. If no, a second braking force is determined to brake the target vehicle. The scheme can brake or pass the intersection in time when the vehicle encounters a limit situation, such as the traffic signal changing to prohibition of passing immediately, effectively reduces the phenomenon of vehicle running a red light, and can also avoid traffic accidents caused by the vehicle not reacting in time.

The utility model relates to the technical field of road crossing supporting frames, in particular to a road crossing supporting frame for power grid construction, which comprises a positioning bottom plate, an upper end of the positioning bottom plate is fixedly connected with an electric push rod; the supporting mechanism is arranged above the positioning bottom plate; wherein the supporting mechanism comprises two sliding frames fixedly connected to the upper end of the positioning bottom plate, a supporting assembly is arranged between the two sliding frames, the lower end of the supporting assembly is connected with a positioning assembly, and a holding assembly is installed at the upper end of the supporting assembly; according to the highway crossing supporting frame for power grid construction, through the arrangement of the supporting assembly and the positioning assembly, the device can form a triangle through the supporting assembly, and due to the stability of the triangle, in the supporting process of the device, electric wires can be supported more stably; and the lower end of the movable frame can be positioned through the arranged positioning assembly, and the situation that the wire support shakes is avoided.

As shown in the reference diagram showing the state of use, this product is a panel for a protective fence installed at the boundary between a roadway and a sidewalk, and is spanned between posts and attached with bolts, nuts, etc. As shown in the reference diagram showing the state of use, this product is installed on conventional posts, making the fence higher than the post height, making it difficult for pedestrians to easily step over and climb over, thereby deterring dangerous road crossings and running out into the road.

Roadway intersection signaling solution is provided having systems and methods that can include a processor to identify a setting for roadway signaling. The setting can include predetermined phases to apply according to time intervals to control traffic objects at the intersection. The processor can identify data from a sensor on an object and an environmental condition at the roadway intersection. The processor can determine, based on the object and the environmental condition input into a machine learning (ML) model, a timing for the object to pass the roadway intersection. The processor can adjust, based on the timing for the object to pass the roadway intersection, the setting for signaling at the roadway intersection and generate an instruction to a signaling device at the roadway intersection based on the adjusted setting.

The utility model relates to the technical field of wiring wells, in particular to a municipal road crossing wiring well structure which comprises an original soil base layer, a foundation pit is formed in the surface of the original soil base layer, and a wiring well body is arranged in the foundation pit. The wiring well body comprises a supporting cushion layer, a water collection pit, an inner side well body, an outer side well body, a water collection groove, an iron grate, a fixing clamping groove, a water drainage pipe, a threading protection pipe, a waterproof coiled material layer and a waterproof coating layer, the inner side well body, the outer side well body and the supporting cushion layer are integrally poured through concrete, and the fixing clamping groove is formed in the inner side edge of the upper end of the outer side well body; a well cover plate is clamped in the fixed clamping groove; the wiring well body is provided with the inner layer and the outer layer, the wiring part is arranged in the inner side well body, the outer side well body plays a role in protection and prevents underground water from permeating, meanwhile, rainwater permeating from the upper side can be collected into the water collecting groove, and when the amount of rainwater permeates into the inner side well body, the rainwater can also be collected into the water collecting pit, so that the water collecting effect is improved. And the safety of the pipeline is effectively improved.

The invention relates to a road network perception charging station addressing planning method based on a reinforcement learning model, and the method comprises the following steps: collecting regional road data, constructing a road network diagram based on the regional road data, enabling nodes in the diagram to represent road intersections, enabling edges to represent connection roads, and setting the weight of each edge; constructing a candidate charging station set, wherein the candidate charging station set comprises a plurality of charging stations, nodes to which the charging stations belong and configuration parameters; a candidate charging station planning plan set is constructed based on the candidate charging station set, the candidate charging station set comprises all possible charging station combinations, and one charging station combination represents one charging station planning plan; and constructing a comprehensive utility function of the charging station planning plan and a corresponding constraint condition, and calculating an optimal charging station planning plan based on the reinforcement learning model and the comprehensive utility function.

This utility model discloses a rotary drilling rig for road crossing pile construction, belonging to the field of rotary drilling technology. It mainly includes an excavator with lifting support legs fixedly connected to its four corners. A rotary drilling guide mechanism is rotatably connected to the front end of the excavator. A hydraulic cylinder is rotatably connected between the excavator and the rotary drilling guide mechanism. The rotary drilling guide mechanism contains a telescopic mechanism, and a rotary drilling power mechanism is fixedly connected to the telescopic end of the telescopic mechanism. A drill rod fixing mechanism for quick drill body replacement is fixedly connected to the power output end of the rotary drilling power mechanism. The drill rod fixing mechanism is fixedly connected to the drill body. This utility model solves the problems of uneven ground during road crossing construction, making it difficult to ensure drilling verticality and entry angle. It is compatible with quick replacement of various drill bodies, including round and hexagonal drill rods, and can cover various geological drilling requirements common at road crossings, exhibiting strong versatility. This utility model is mainly used for processing road crossing pile holes.

The embodiment of the invention discloses a traffic light control method and device based on joint simulation. A specific embodiment of the method comprises the following steps: acquiring a traffic flow video of a road intersection; performing bus identification on the traffic stream video to obtain bus identification information; in response to determining that an identification timestamp included in the bus identification information is in a time period of a corresponding green light phase and the bus running state represents a vehicle advancing state, determining a corresponding bus passing duration based on the bus identification information; in response to the determined time period when the bus passing duration exceeds the green light phase, determining a corresponding green light prolonged duration based on a preset maximum green light duration; in response to determining that the green light prolonged duration meets the delay condition, adjusting a green light phase according to the green light prolonged duration to obtain an adjusted green light phase; and controlling the corresponding traffic light according to the adjusted traffic light phase. The implementation mode can improve the overall traffic efficiency of the road network.

A computer-implemented method for classifying road intersections by means of GPS data, in particular from a plurality of vehicles in a fleet. The method includes: using existing GPS data points of vehicle movements, which were captured using GPS sensors of the vehicles at at least one road intersection; converting the captured GPS data points into a 2D contour by determining a center point of the road intersection and creating a polygon that represents a 2D contour of the road intersection; encoding the 2D contour of the road intersection using elliptic Fourier descriptors using a Fourier transform method and classifying the encoded data into different intersection types.

The embodiment of the invention provides an intersection vehicle steering recognition method and device and a vehicle. The method comprises the following steps: obtaining an entrance lane angle of each entrance lane in a road intersection, position information of each signal lamp in the road intersection, navigation path information of the road intersection and track information of a target vehicle, the navigation path information comprises at least one road section required to pass through the road intersection; based on each entrance lane angle, the navigation path information and the position information, determining a corresponding relation table which is used for representing a corresponding relation between the road section and signal lamps in the road intersection; and based on the track information and the corresponding relation table, determining a target signal lamp in the signal lamps, the target signal lamp being used for controlling the passage of the target vehicle at the road intersection. The method is used for improving the recognition accuracy of vehicle intersection steering.

Method for controlling an automated vehicle (1) in the area of ​​a road intersection (SK) using data (D) acquired by means of an environment sensing sensor system (4), wherein - before reaching the road junction (SK), several future vehicle positions are determined as stop point candidates along a route preceding the vehicle (1) until reaching the road junction (SK), - for each of the stop point candidates a field of view (S) of the environmental detection sensors (4) is predicted taking into account a height profile of a road surface in the area of ​​the road intersection (SK), - the stop point candidate at which the environmental sensing sensors (4) have the largest field of view (S) is selected as the stop position (POS) of the vehicle (1), - at the stop position (POS) a vehicle environment is detected by means of the environment detection sensors (4) and - depending on a traffic situation determined from the data (D) of the environmental detection sensors (4), the vehicle (1) is automatically steered into the road intersection (SK), characterized in that - at the stop position (POS) the orientation of the vehicle (1) is changed by means of an active chassis (9) in such a way that the field of view (S) of the environment detection sensors (4) is maximized.

The present application relates to the technical field of roadbed construction, and discloses a connecting construction method of a highway assembled roadbed crossing a fill flood control dam. The assembled roadbed can be flexibly prefabricated according to the roadbed at the connecting part of the flood control dam of different shapes, and meanwhile, the connecting part is a relatively weak part, so prefabrication is carried out by using concrete or reinforced concrete, which can ensure the construction quality of the roadbed at the connecting part. Secondly, a reserved hole is arranged on the steel pipe pile, the fill flood control dam and the assembled roadbed on both sides, and the steel pipe pile, the fill flood control dam and the assembled roadbed on both sides are connected into a whole by using a prestressed anchor cable and an anchor device, so that the tightness of the connection between the roadbed and the flood control dam is improved, and the situation of road surface cracking caused by loose connection can be avoided. Finally, the prestressed anchor cable, after being tensioned, improves the tightness of the connection between the roadbed and the flood control dam, and together with the steel pipe pile, forms a steel framework in the fill flood control dam to improve the structural strength of the flood control dam.

In various examples, intersection points, which correspond to the positions where different lanes diverge, can be determined and used to assign (e.g., match) perceived lanes to corresponding mapped road segments. For example, the systems and methods of this disclosure can use perception data to determine the positions of intersection points where two or more lanes diverge, as well as to determine the lateral distances between adjacent lanes. Using the intersection points and / or the lateral distances, the lanes can be sorted into different lane groups, with each lane group potentially corresponding to a different road segment.In some examples, the systems can assign individual lanes or groups of lanes to corresponding road segments on a map, based on the intersection points that correspond to mapped road junctions and / or the lane geometry that corresponds to the mapped road topology.

The invention relates to an integral crossing plate and road joint settlement control method, which comprises the following steps: (1) roadbed treatment and steel slag water stable layer construction: compacting a roadbed at the bottom of a foundation pit, mixing steel slag and gravel according to a ratio, paving and compacting in layers, and forming a stable steel slag water stable layer; (2) foundation construction is conducted, specifically, a foundation bottom plate structure or a tower-shaped structure is adopted for foundation construction; (3) mounting the crossing plates: hoisting the whole crossing plates to the mounting positions, adjusting the levelness and the position relationship with the road joint, and welding and connecting two adjacent crossing plates by using a steel plate embedded part; and (4) transition section construction: carrying out transition section construction with a certain length between the pavement and the crossing plate. Sufficient and uniform basic rigidity is provided for the integral crossing plate and the crossing pavement, the rigidity difference of adjacent structures at the joint of the integral crossing plate and the road is effectively reduced, differential settlement is controlled, and the diseases such as bumping are reduced.

A system, a method and a computer program product are provided to determine a left turn decision for a user or autonomous vehicle attempting to turn at an intersection of a road. For example, the system obtains contextual features and / or sensor data related to the intersection of the road. An optimal location on the road is determined for the user or autonomous vehicle to position the vehicle to make the left turn decision, based on the contextual features and / or the sensor data. A left turn risk factor is determined based on the location on the road for the user or autonomous vehicle to position the vehicle to make a left turn. An alert is presented to the user or autonomous vehicle regarding the left turn risk factor with a left turn advisory message.

The application provides a road traffic signal control parameter adaptive optimization method and system, and belongs to the technical field of road traffic signal control, and comprises the following steps: acquiring road intersection point cloud data and forming vehicle trajectories; extracting approaching area speed and deceleration samples and conflict area entering and leaving time based on the vehicle trajectories; constructing a parking feasibility time sample set based on the approaching area speed and deceleration samples; constructing a conflict area occupancy time sample set based on the conflict area entering and leaving time; obtaining a yellow light risk boundary lower limit based on the parking feasibility time sample set, and obtaining a full red risk boundary lower limit based on the conflict area occupancy time sample set; adding a risk change rate constraint and a minimum residence time constraint based on the yellow light risk boundary lower limit and the full red risk boundary lower limit; online solving yellow light time and full red time, calculating emptying time, and integrating the solving results to obtain optimized road traffic signal control parameters.

The utility model discloses a line protection device can be directly laid on road relates to power, communication, water transmission and other line road crossing technical field. The device includes pipeline main body, modularization connection subassembly and anchoring structure, and pipeline main body is arranged as the structure of flat bottom + upper circular arc section, and its inside is provided with the cavity for laying line, is provided with inside support structure in the cavity, and inside support structure is welded with pipeline main body, and a plurality of pipeline main bodies are detachably connected through modularization connection subassembly, and pipeline main body is fixedly connected with roadbed through anchoring structure, and the both ends of pipeline main body are provided with sealed end, and sealed end is connected with pipeline main body through bolt. The utility model discloses a line protection device can be directly laid on road above -mentioned structure, effectively solved the traffic interference and road surface damage problem caused by traditional excavation mode, and the device is suitable for various road environment, especially the line protection demand under heavy load traffic scene.

The invention relates to a method and a system for rapidly realizing Beidou high-precision positioning and map matching, and the method comprises the steps: M1, a user carries out the target control point selection in an actual scene within a constraint range based on a road intersection, a building corner point and a telegraph pole as actual target selection objects, and carries out the target control point selection; obtaining data information of coordinates of a plurality of target control points; and M2, based on the data information of the coordinates of the plurality of target control points, carrying a positioning terminal to sequentially arrive at the target control points, and obtaining high-precision positioning data information of each target control point through a Beidou satellite navigation system, and marking the target control points on the electronic map in sequence to obtain data information of plane coordinates of each target control point under the map coordinate system. According to the method, a common user can quickly complete coordinate matching in an actual application scene, and real-time and high-precision matching of Beidou high-precision positioning data and electronic map data is realized.

The application belongs to the technical field of intelligent driving, and specifically discloses a mine area operation path and social road intersection management and control system and method, which comprises the following: a cloud control decision unit for receiving the sensing result sent by a roadside communication unit, a roadside communication unit for data communication, a sensing analysis unit for target identification, target tracking and obstacle information detection, which is sent to the roadside communication unit as the sensing result, a gate sub-device for performing intersection management and control, and a vehicle-mounted unit for controlling the mine car according to the received obstacle information. The application has the following advantages: all-weather operation without the participation of personnel, especially for the complex driving roads in the mine area, the application can realize the identification and tracking of the social vehicle, pedestrian or other obstacle information in the intersection, and can realize the time-sharing driving control of the mine area vehicle and the external small vehicle by combining the decision-making ability of the cloud.

The invention relates to a computer-implemented method for encoding a road intersection contour using Elliptic Fourier Descriptors (EFDs), comprising the steps: encoding by calculating Fourier coefficients of a polygonal representation of the road intersection contour using a forward transformation method (20), wherein the number of Fourier coefficients is determined by a complexity of the contour, and thereby a resulting data set is determined.

As shown in the reference diagram showing the state of use, this product is a panel for a protective fence installed at the boundary between a roadway and a sidewalk, and is spanned between posts and attached with bolts, nuts, etc. As shown in the reference diagram showing the state of use, this product is installed on conventional posts, making the fence higher than the post height, making it difficult for pedestrians to easily step over and climb over, thereby deterring dangerous road crossings and running out into the road.

Roadway intersection signaling solution is provided having systems and methods that can include a processor to identify a setting for roadway signaling. The setting can include predetermined phases to apply according to time intervals to control traffic objects at the intersection. The processor can identify data from a sensor on an object and an environmental condition at the roadway intersection. The processor can determine, based on the object and the environmental condition input into a machine learning (ML) model, a timing for the object to pass the roadway intersection. The processor can adjust, based on the timing for the object to pass the roadway intersection, the setting for signaling at the roadway intersection and generate an instruction to a signaling device at the roadway intersection based on the adjusted setting.

In example embodiments, methods and systems are provided, comprising: obtaining, via telematics systems of a plurality of vehicles, vehicle telematics data as the plurality of vehicles travel through one or more geographic regions; converting, from a computer processor, the vehicle telematics data into a geohash encoding format related to the one or more geographic regions; identifying, via the processor, a plurality of road intersections using the vehicle telematics data converted into the geohash encoding; identifying, via the processor, a plurality of road segments using the vehicle telematics data converted into the geohash encoding of the one or more geographic regions; and generating, via the processor, a road network map of the one or more geographic regions including the plurality of road intersections and the plurality of road segments using the vehicle telematics data converted into the geohash encoding.

The present application relates to the technical fields of foundation pit drainage, and particularly relates to a kind of clear residue device of road pipe of foundation pit open drainage, including winch and mud scraping assembly, the mud scraping assembly is arranged in the inside of road pipe, the winch is arranged in the outside of road pipe, simultaneously mud scraping assembly is connected with winch by wire rope, and blocking piece is arranged on the wire rope, and the blocking piece is arranged at the side of mud scraping assembly outward.This clear residue device of road pipe of foundation pit open drainage can dredge and clean the inside of road pipe by the different placement of mud scraping assembly, simultaneously the movable connection between fixed main frame and movable main frame can change the size of mud scraping assembly with the size of the inside pipe diameter of road pipe, so as to not only improve the drainage efficiency, but also have good versatility.

The invention relates to a supersaturated intersection space-time cooperative control method fusing dynamic channelization design and multi-target signal optimization, and aims to solve the problem of intersection supersaturation caused by fixed lane functions and the like of a conventional channelization method for urban intersections. A space-time cooperative control scheme fusing dynamic channelization design and multi-target signal optimization is provided. The method comprises the following steps: determining a supersaturation state of an intersection by establishing a supersaturation state identification model based on a queuing length change rate; on the basis of a space-time resource collaborative optimization theory, an improved comprehensive waiting area is designed, a bus-dedicated pre-entrance lane and a variable entrance and exit lane are additionally arranged, and a main and pre-signal coordination control strategy is optimized; according to specifications and questionnaire survey results, determining a signal period and a green time ratio of the supersaturated intersection; on the basis of the principle of easy recognition, sign and marking design is carried out on a pre-entrance lane special for a bus, a reversible lane and a comprehensive waiting area, effective guidance for a driver is achieved, and therefore the operation efficiency and the traffic capacity of a road intersection are improved.

This invention provides a method, apparatus, device, and readable storage medium for branch road type screening and calculation, relating to the field of navigation map mapping technology. The method includes: obtaining a navigation path; screening the navigation path for road intersections to obtain all road intersections in the navigation path; obtaining associated branches corresponding to each road intersection based on the relationship between all the road intersections and preset basic road network data; vectorizing the associated branches corresponding to each road intersection to obtain a branch road vector for each associated branch road; and determining the angle based on the branch road vectors corresponding to each road intersection to obtain the branch road type corresponding to each associated branch road. This method considers the potential impact of adjacent intersections on navigation path optimization when considering the surrounding environment, introduces the vectorization of associated branches, and achieves screening of the branch road type corresponding to each associated branch road.