18 results about "Dual carriageway" patented technology

To provide a road that allows a vehicle that should be entering the correct lane to enter the wrong lane to return to the correct lane smoothly and safely, reduces congestion, delays, and resulting traffic accidents for vehicles traveling on both the correct and wrong lanes, and maintains a high traffic flow rate. [Solution] The road structure for guiding vehicles traveling in the wrong direction according to the present invention has a first double-lane road (10), a second double-lane road (20), and a central median (30), A predetermined central bypass road (40) is provided in the aforementioned central median (30). It is characterized by having a fence (50) to guide vehicles traveling in the wrong direction and / or a fence (60) to guide vehicles traveling in the right direction.

The application discloses a track type robot for putting out fire blanket in a tunnel, and particularly relates to the technical field of fire extinguishing devices, which comprises a fixing cover, a rack slide rail is arranged in the fixing cover, a moving frame is connected to the outside of the rack slide rail, two symmetrical motors are arranged on the top of the moving frame, gears are connected to the output ends of the two motors, a hydraulic cylinder is arranged on one side in the moving frame, a fire extinguishing assembly is arranged on the extension end of the hydraulic cylinder, and a fire extinguishing liquid tank is arranged at the bottom of the fire extinguishing assembly; the connecting rod is above the vehicle through the rotation of the steering seat driven by the motor, and the robot can adjust the coverage range of the fire blanket device in real time through the linkage design of the electric push rod and the extension rod, so that the fire extinguishing demand of double lanes or large-area fire can be met; during the putting process, the cooperation of the steel wire rope and the counterweight rod can automatically tighten the fire blanket after the fire blanket is lowered, so that the fire blanket can be closely attached to the vehicle, effective isolation can be achieved, and the fire extinguishing efficiency can be remarkably improved.

This application provides a method for rapid extraction of damaged bridges from a large visual model with zero samples in emergency scenarios. It relates to the field of disaster-damaged bridge extraction technology. The method includes: extracting bridge linear features from road data; merging two bridge linear features representing two lanes into a single-lane feature to obtain bridge linear data; and using auxiliary data for spatial location correction and attribute fusion to obtain a disaster-time bridge linear database; extracting bridge images; inputting the bridge images and preset prompts into a large model; outputting bridge status and bridge features; determining the bridge damage based on the output bridge status; and associating the disaster-time bridge linear database to match corresponding bridge geographic information to obtain the geographic information of the damaged bridge. This application enables rapid association and accurate acquisition of geographic information of damaged bridges in emergency scenarios, significantly shortening the disaster damage assessment cycle and providing efficient data support for disaster relief decision-making.

The invention discloses a double-lane outer side geomagnetic vehicle track continuous reconstruction method and system for multiple leak detection, and is suitable for a scene in which geomagnetic sensors are arranged on outer side lane lines of two sides of a one-way double lane and are not arranged in the middle. And taking the event-level geomagnetic detection result as input, establishing a time index cache sorted according to measurement timestamps in a data center, and processing out-of-order events in a fixed lag sliding window. Self-calibrating the omission ratio of each sensor group on line based on the output stable track segment and obtaining the reliability; constructing an event transfer graph allowing to cross a plurality of sensor groups, accumulating detection-lacking punishment according to the reliability of the intermediate sensor group, and forming connection cost by combining time-space and feature consistency; and solving the minimum total cost connection under one-to-one constraint to obtain a trajectory path. And connecting the cross-missing section to generate a virtual track point and outputting a stable track section in a fixed lag manner. According to the invention, waveform level processing or additional hardware is not needed, and track continuity and online output stability can be improved.

The invention discloses a double-lane vehicle operation control method, device and equipment in a mine and a storage medium, and relates to the technical field of mine car control, and the method comprises the steps: after a current vehicle is started, continuously transmitting radio wave signals of different angles to the front of a lane; a reflection signal of an obstacle on the front lane for the radio wave signal is received, obstacle information of the front lane is determined based on signal feature information of the reflection signal, and the obstacle information comprises an obstacle type, an obstacle moving speed and an obstacle position; based on the obstacle moving speed and the obstacle position, the real-time distance between the obstacle and the current vehicle is judged, and a vehicle meeting or avoiding scheme is generated according to the obstacle type when the real-time distance is smaller than or equal to a preset threshold value; and the current vehicle is controlled to execute the meeting or avoiding scheme until obstacle avoiding or meeting operation is completed. According to the invention, equipment loss and manpower cost increase can be reduced, and the requirements of mine intelligent production on precision and high efficiency of double-lane vehicle operation control are met.

A method, system, apparatus, and medium for generating critical scenarios in autonomous driving tests are provided. The method includes: generating an initial scenario based on a lane-coordinate system; constructing a one-way single-lane car-following scenario, specifically including: creating a road and vehicles based on the initial scenario, the vehicles including an autonomous vehicle controlled by an intelligent driving model (IDM) and an agent vehicle; constructing a one-way dual-lane cut-in scenario, specifically including: creating a dual-lane road and vehicles based on the initial scenario, the vehicles including an autonomous vehicle controlled by the IDM model and an intelligent-agent vehicle; and generating, based on the constructed one-way single-lane car-following scenario and the constructed one-way dual-lane cut-in scenario, critical scenarios for autonomous-vehicle testing. The method efficiently and accurately produces critical scenarios for autonomous-driving systems, thereby accelerating the testing and verification of their performance and safety in complex, high-risk environments.

The utility model discloses a road marking detection device which comprises a main arm, the main arm is installed at the front end of a vehicle body through a connecting base in the horizontal direction, main lasers which are arranged downwards are installed below the two ends of the main arm in the length direction, two auxiliary arms which are arranged in a staggered mode are installed in the main arm, and the main arm and the auxiliary arms are each of a hollow structure. The auxiliary arm and the main arm are connected through a telescopic cylinder, one end of the auxiliary arm extends out of the interior of the main arm, an auxiliary laser arranged downwards is installed at the bottom of the extending end, and the auxiliary laser and the main laser are located at the same horizontal height. The road marking detection device provided by the utility model not only can be used for effectively detecting a single-lane marking, but also can be used for synchronously detecting a double-lane or three-lane road marking, so that the road marking detection efficiency is remarkably improved, and the application range is widened.

The invention provides a method for rapidly extracting a bridge damaged by a zero-sample visual large model in an emergency scene. Relates to the technical field of disaster damage bridge extraction. The method comprises the following steps: extracting bridge linear elements from road data, combining two bridge linear element lines representing double lanes into single lane elements to obtain bridge linear data, and performing spatial position correction and attribute fusion by using auxiliary data to obtain a disaster bridge linear database; extracting a bridge image; inputting a bridge image and a preset cue word into the large model, outputting a bridge state and a bridge feature, determining the damage condition of the bridge based on the output bridge state, associating the bridge linear database in disaster to match the corresponding bridge geographic information, and obtaining the geographic information of the damaged bridge. According to the method, the geographic information of the damaged bridge in the emergency scene can be quickly associated and accurately acquired, the disaster damage assessment period is greatly shortened, and efficient data support is provided for rescue and relief decision.

The invention discloses a suspended double-track bus, and relates to the technical field of public transportation, and the suspended double-track bus comprises a bus body elevated above a road, magnet tracks arranged on two sides of the road, and a liquid nitrogen supplementing facility arranged on a platform; the bus body is provided with a door type structure stretching across the two lanes, the superconducting magnet is stably suspended on the magnet track through the vehicle-mounted low-temperature maintaining system, and the frictional resistance during vehicle running is effectively reduced. The mechanical guiding and driving system is used as safety redundancy when suspension fails while ensuring direction control and power output. The double-layer door type structure provides large-capacity passenger carrying space and allows social vehicles to normally pass below, so that the utilization rate of road space is increased. A liquid nitrogen supplementing facility arranged on the platform can supplement a cooling medium when the vehicle is parked, and continuous operation of the system is supported. The system provides a low-energy-consumption and high-efficiency transportation mode for urban public transportation.

The invention discloses an active risk prevention and control method for an interchange exit ramp. The method comprises the following steps: step 1, arranging equipment; 2, transmitting continuous image frames shot in real time to an edge calculation unit; 3, the edge calculation unit recognizes a vehicle from continuous image frames shot by each camera through a target detection algorithm, and an abnormal parking event is judged; 4, the edge calculation unit sends dangerous event information to a control center, if the exit ramp is a single lane, the step 5 is carried out, and if the exit ramp is a double lane, the step 6 is carried out; 5, the edge calculation unit controls the ETC information board and the variable information sign to be displayed; and 6, performing condition judgment according to the parking position and the width of the remaining lane. According to the invention, accidents caused by collision between a driver and a ramp stop vehicle due to a view blind area can be effectively avoided, the driving safety is improved, the response time is short, vehicles not entering the ramp can be quickly prevented and controlled, and the initiative of the system is improved.

The invention provides a double-lane tunnel karst joint detection system based on geological radar and infrared detection, and the system comprises two groups of side plates, and the back surfaces of the side plates are fixedly provided with vertical rods; the storage plates are fixed to the two ends of the inner sides of the side plates and the tops of the vertical rods correspondingly, inserting plates are slidably inserted into the two storage plates, the side plates, the storage plates and the inserting plates define a frame structure, and the size of a frame formed by the storage plates, the inserting plates and the side plates is adjusted to be consistent with the width of a tunnel. The installation assembly slides along the tops of the two sides of a frame composed of the storage plate, the insertion plate and the side plates, the geological radar detection device detects the tunnel ground in a segmented mode, the geological radar detection device descends to be close to the ground during each time of detection, and the existing geological radar detection technology is used for tunnel karst detection. And meanwhile, the infrared detection assembly carries out infrared detection on the arc-shaped interior of the tunnel, and synchronism of ground detection of the geological radar detection device is kept.

The invention discloses an automobile incoming material manipulator sampling system, which comprises a manipulator unit provided with a sampling drill rod and used for sampling automobile incoming materials; the manipulator moving unit comprises a rail unit and a driving unit, the rail unit comprises a longitudinal rail and a transverse rail, and the manipulator unit is movably arranged on the rail unit through the driving unit; the sample preparation unit comprises a crushing mechanism, a feeding division mechanism, a sample collecting mechanism and a material discarding mechanism, the feeding division mechanism is located at an outlet of the crushing mechanism, and the sample collecting mechanism and the material discarding mechanism are located at an outlet of the feeding division mechanism. According to the invention, the intelligent manipulator unit is adopted to perform automatic sampling and sample preparation on clean coal, the stability problem of transverse and longitudinal movement of the manipulator is solved, for double-lane coal entering a factory, the coal entering the factory can be sampled by only one set of manipulator unit, the occupied area is reduced, the building cost is reduced, and the sampling period is shortened.

A spectacle eyewear device and methods for using a spectacle eyewear device to attenuate glare experienced by a person while driving a car during nighttime hours. The lenses of the spectacle eyewear device provide spatially non-uniform light attenuation using an optical filtering material that is gradiently disposed along an gradient axis oriented between 10 degrees to 30 degrees away from the vertical axis of the lenses. In some variations the average visible light transmittance in a first quadrant of the lenses is less than 30 percent and is greater than 70 percent in a second quadrant. In some variations the lenses comprise a selectively disposed blue-light reflective coating. In some variations the spectacle eyewear device is configured for use on urban city streets and freeways. In some variations the spectacle eyewear device is configured for use on country roads and two-lane highways.

The invention discloses a unified association centralized monitoring data management system for multiple traffic electromechanical devices. The system comprises a traffic road topology construction vehicle data access module, a multi-road dynamic region division monitoring and marking module, a road vehicle single-block lamplight state monitoring and screening module, a multi-block vehicle lamplight opening association analysis module, a background illumination system remote control decision module and an equipment sharing linkage platform. The method aims at obtaining real-time traffic monitoring system data to construct a target road topological graph, judging the traffic direction attribute of a current monitoring road, carrying out multi-position dynamic block division on the target road, dynamically identifying single monitoring areas of the target road under different fixed-point timestamps to carry out refined image analysis, and carrying out real-time traffic monitoring on the target road. And carrying out screening and brightness quantitative detection on vehicle body light turn-on conditions of vehicles in the block, executing association analysis of single-lane and double-lane differentiation of the target road based on road traffic direction attributes, and judging the continuity and growth trend of the traffic lighting demand of the target road.

The invention relates to a method for determining traffic sign information (128) for the operation of a vehicle (100). In a reading step, front camera data (114) are read in and in a processing step, the data is processed, whereby a road type of a road in the vicinity in front of the vehicle (100) is identified, a front side of a first traffic sign for a lane traveled by the vehicle (100) is detected, it is checked whether a second traffic sign for an oncoming lane is arranged opposite the first traffic sign, and a back side of the second traffic sign is detected, classified and in particular located in order to generate a first data set (123).In a further reading step, rear camera data (118) is read if the first data set (123) indicates a two-lane road as the road type, the two lanes being identical, a second traffic sign positioned opposite the first, and matching outlines of the traffic signs. In a further processing step, the rear camera data (118) is processed, with the front of the second traffic sign being detected to generate a second data set (126). In an execution step, a comparison is performed between the first data set (123) and the second data set (126), and the traffic sign information (128) is determined based on the result of this comparison.

The application discloses a double-lane highway local section single-lane alternate traffic signal dynamic timing method, which comprises the following steps: determining the local section traffic influence range of an event; collecting traffic flow data and analyzing traffic flow characteristics; calculating the equivalent amount of small vehicles based on delay and the adverse influence factor of large vehicles; and constructing a signal dynamic timing method for the alternate traffic of the event influence section of the double-lane highway. The application constructs a signal timing optimization model based on dynamic traffic flow characteristics, collects the traffic flow data of the event influence section in real time, including the actual traffic time, the vehicle type ratio and the actual arrival traffic volume, dynamically adjusts the signal cycle and the phase timing scheme, and is suitable for the special scene of the double-lane highway alternate traffic section. The method can quickly adapt to the traffic fluctuation of the alternate traffic section, reduces the vehicle delay under manual command, improves the vehicle traffic efficiency, and enhances the flexibility and dynamic adaptability of the signal timing of the double-lane highway alternate traffic section.

To create orthoimages in which distortion and misalignment of road markings that occur during photography are suppressed.SOLUTION: A road surface image creation device includes: an image acquisition unit that acquires multiple orthoimages in which the same road markings installed on a road having two-lanes are captured; a creation unit that creates multiple composite orthoimages in which the two lanes and the road markings are captured, the multiple composite orthoimages being obtained by combining each of the multiple orthoimages in which one of the two-lanes and the road markings are captured with each of the multiple orthoimages in which the other of the two-lanes and the road markings are captured; a detection unit that detects positional misalignment of the road markings in each of the multiple composite orthoimages; and a correction unit that creates corrected orthoimages obtained by correcting the detected positional misalignment.SELECTED DRAWING: Figure 1

This application relates to the field of point cloud data processing, and in particular to a method for processing point clouds in a parking garage, comprising the following steps: S100, acquiring the point cloud of a target area in the parking garage; S200, segmenting the point cloud of the target area in the parking garage to obtain a set of point cloud clusters A; S300, traversing A and extracting A n The straight line segment in the middle, we get A. n The corresponding set of line segments L n S400, obtain A n The first parameter s1; S500, if |b m,1 -b m,2 If |≤b′, then obtain l max,1 and l max,2 S600, obtain the first target line; if A max,1 If each point is located to the right of the mobile charging robot's direction of movement, then the first target straight line is to bring l max,1 The straight line obtained by shifting d / 2 to the left. This invention solves the problem that existing mobile charging robots, relying on vision, cannot recognize the dividing line between two lanes in a garage.