21 results about "Road condition" patented technology

The invention relates to an SOC and SOT combined state estimation method based on a power battery electric-thermal coupling model, and belongs to the technical field of battery management. The methodcomprises the steps of selecting a to-be-measured power battery, building the electric-thermal model of the power battery, and determining parameters needed for estimating the SOC and the SOT of the power battery; under different temperatures, conducting trickling charging-discharging experiments and HPPC experiments on the measured power battery, building a database of equivalent circuit model parameters relevant to the temperature and the SOC under a charging and discharging condition, and simulating field test working conditions under different road conditions to build the database; conducting parameter identification to obtain characteristic parameters of the electric-thermal model, and obtaining the quantitative relation between the equivalent circuit model parameters and the temperature and the SOC under the charging and discharging condition. By means of the SOC and SOT combined state estimation method based on the power battery electric-thermal coupling model, the model is combined with a PF algorithm and the quantitative relation of the equivalent circuit model parameters relevant to the temperature and the SOC under the charging and discharging condition of the power battery to achieve the SOC and SOT combined state estimation of the power battery.

The invention provides a vehicle-mounted navigation system. The vehicle-mounted navigation system comprises a vehicle-mounted GPS (Global Positioning System) antenna, a camera, an AR (Augmented Reality) head-up display and a vehicle-mounted navigation host, wherein the vehicle-mounted GPS antenna is used for locating and obtaining a world coordinate system; the camera is used for carrying out real-time image collection on a road condition ahead; the vehicle-mounted navigation host comprises a coordinate system conversion unit which is used for carrying out image recognition and analysis on a road condition image collected by the camera and converting the world coordinate system to a camera image coordinate system, a model generating unit which is used for generating a 3D (Three-dimension) model of a marching road according to the camera image coordinate system, a virtual navigation information generating unit which is used for generating virtual navigation indicating information according to the 3D model of the marching road and an output unit which is used for outputting the virtual navigation indicating information to the AR head-up display; the AR head-up display is used for projecting the virtual navigation indicating information to a windshield and realizing the effect of overlaying the virtual navigation indicating information to an actual road.

The invention discloses a front-vehicle road condition display system. The front-vehicle road condition display system comprises a plurality of first vehicular units, second vehicular units and roadside units; the first vehicular units are used for collecting safety information of a first vehicle in real time through a vehicle terminal, and sending the safety information to the roadside units, wherein the safety information at least comprises a road condition video image in front of the first vehicle; the roadside units are used for receiving the safety information sent by the first vehicular units, and forwarding the safety information to the second vehicular units; the second vehicular units are used for receiving the safety information forwarded by the roadside units and sent by the first vehicular units, and at least displaying the road condition video image on a second vehicle. The invention further discloses a front-vehicle road condition display method. By adopting the front-vehicle road condition display system, road condition information of a front vehicle can be seen in a vehicle following process to improve the driving safety of the vehicles.

The application relates to the technical field of computer vision, and discloses an obstacle avoidance reminding method, a related device and a computer readable storage medium. According to the obstacle avoidance reminding method, the related device and the computer readable storage medium, ground detection is carried out according to acquired image data to acquire ground information of a road; according to the acquired ground information, the traffic condition of the road is determined; if the road is determined to be impassable, road condition detection is carried out on the road to obtaina first detection result, and obstacle detection is carried out on the road to obtain a second detection result; and according to the first detection result and the second detection result, obstacle avoidance reminding information is determined. Ground detection is carried out through the acquired image data, path detection is carried out on the basis of the ground detection, and road condition detection and obstacle detection are carried out under the condition that the road is determined to be impassable to determine the obstacle avoidance reminding information so that users can quickly andsafely pass through the obstacle.

The invention discloses alarm processing method and system based on a mobile terminal. According to the alarm processing method, the mobile terminal disclosed by the invention is used for recommending a plurality of travelling routes according to a starting point and a destination point which are set by a user; when the user selects a main route and an alternative route, the reference time of each route can be acquired; a mobile terminal alarm procedure can automatically wake up and detect a road condition in a predetermined time; if the road condition of the main route is normal, ring is given out in a set alarm time; if the time required for the main route is more than normal time, the alternative route which takes shortest time is selected, the extra time than normal time is calculated, and the alarm is given out in advance according to the extra time; and if the main route and the alternative route are not smooth, the alarm is given out immediately. With the adoption of the mobile terminal disclosed by the invention, the alarm can be given out in advance according to the real-time route condition information, the user has enough time to select the alternative smooth road to travel if conditions such as road closure occurs, and thus, the problems of being late to work and the like are avoided.

The invention discloses a vehicle-mounted unit awakening method, device and system. The method comprises the following steps of obtaining at least one group of traffic flow images of a target area according to a target detection algorithm, wherein a traffic flow image is obtained through real-time shooting of a camera device corresponding to the target area, acquiring a traffic flow detection result located in the target area in real time according to the traffic flow image, and determining whether a vehicle-mounted unit located in the target area is awakened through a roadside unit corresponding to the target area or not according to the traffic flow detection result; when determining that the vehicle-mounted unit is awakened, sending an awakening signal to the vehicle-mounted unit through the roadside unit located in the detection area, so that the vehicle-mounted unit in the dormant state is awakened; when the vehicle-mounted unit is not awakened, indicating that the vehicle-mountedunit is in a dormant state, and when determining that the vehicle-mounted unit needs to be awakened according to actual road conditions, enabling the roadside unit to awaken the vehicle-mounted unit,so that the vehicle-mounted unit is prevented from being in an awakened state for a long time, the service life of the vehicle-mounted unit is prolonged, and energy consumption is reduced.

The invention discloses an urban road traffic jam degree evaluation method and a system and a storage medium, and the method comprises the steps: selecting a target road section, dividing the target road section into a plurality of standard segments, and calculating the corresponding road condition grade indexes of the standard segments; based on the road condition grade indexes of the continuousstandard small segments, setting a traffic jam threshold value, and searching a traffic jam source by utilizing a traffic jam source calculation algorithm; calculating a traffic jam damping coefficient of the traffic jam source according to the road condition grade index of the traffic jam section; based on the traffic jam damping coefficient calculated in real time, calculating an average blocking value of the road section in the time period; and after accumulating historical data for a certain time, calculating a historical maximum average blocking value of the road section, and calculatinga blocking index. According to the invention, the resistance to the traffic section caused by the discontinuous state due to the traffic jam source in the road section due to traffic jam can be recorded in real time, the traffic jam degree of the road and the process of spreading, diffusing and disappearing the traffic jam along with the time change can be visually reflected, and a decision basisis provided for the formulation of a traffic jam control strategy.

The invention relates to a route planning method and device, computer equipment and a storage medium. The method comprises the steps of obtaining passable road sections between a departure and a destination; obtaining road condition information information of the passable road sections and overall technical data of a vehicle, and screening road sections, the road condition information of which ismatched with the overall technical data, from the passable road sections so as to obtain at least one matched road sections; and combining the at least one matched road section according to the departure and the destination so as to obtain at least one planned route. The matching between the vehicles and the road condition information can be sufficiently considered to ensure that the finally obtained planned routes can sufficiently consider the matching between the overall technical data of the vehicles and the roads, thereby ensuring that the vehicles can smoothly run on the planned routes.

The invention relates to a transmission. The transmission comprises a box assembly, a gear shifting assembly, a main variable speed assembly, a differential speed shaft assembly and a front driving assembly. The gear shifting assembly, the main variable speed assembly, the differential speed shaft assembly and the front driving assembly are fixed to a box. The gear shifting assembly comprises a main variable speed gear shifting assembly body and a four-drive gear shifting assembly body. The main variable speed gear shifting assembly body and the four-drive gear shifting assembly body control gear adjusting of the main variable speed assembly and the differential speed shaft assembly correspondingly. The transmission is stable in performance, safe, reliable and compact in structure, rear wheel driving can be achieved when a transporting vehicle provided with the transmission travels on a light-load good road, differential speed four-drive is achieved when the transporting vehicle provided with the transmission travels on a light-load non-rigid road or on a full-load good road, differential speed locking four-drive is achieved when the transporting vehicle provided with the transmission travels on a full-load non-rigid road, the driving capacity of a tractor works in field transfer and road transport is improved advantageously, tyres are prevented from slipping or trapping, and the transmission meets the need of various road conditions and different driving modes.

The invention discloses a vehicle driving mode switching method based on vehicle cloud communication, and the method comprises the steps: judging whether a vehicle in a current driving mode receives a driving mode switching instruction or not, with the driving modes including a manual driving mode, a constant-speed cruise mode and a predictive cruise control mode, wjereom the predictive cruise control mode comprises a first predictive cruise control sub-mode, a second predictive cruise control sub-mode and a third predictive cruise control sub-mode; when a driving mode switching instruction is received, controlling the vehicle to run according to a target driving mode corresponding to the driving mode switching instruction, wherein the target driving mode is a mode for dynamically adjusting the vehicle speed according to a received vehicle speed changing instruction. The various driving modes are switched according to the received driving mode switching instruction, and the driving speed is changed, so that the vehicle is more suitable for complex road conditions during driving, the energy consumption of the vehicle is optimized, and the intelligent degree is high.

The invention provides a moving target space coordinate positioning and displaying method, device and system, and relates to the technical field of intelligent traffic. The method comprises the stepsthat moving information of a moving target sent by each information collection equipment is obtained, wherein the moving information comprises a moving coordinate, a moving speed and a moving direction; target moving information of a to-be-pushed moving target is determined, surrounding moving targets are determined according to the target moving information, and the surrounding moving targets comprise all moving targets within the range of a preset distance; and the surrounding moving information corresponding to the surrounding moving targets and target moving information are pushed to a user terminal corresponding to the to-be-pushed moving target to be displayed. In this way, vehicles running around or the whole road condition can be understood through a display screen of the user terminal, and happening of traffic safety accidents, in particular to happening of accidents of multi-vehicle continuous rear-end collision, can be effectively reduced.

The invention relates to an information display method and apparatus, a computer readable storage medium and a mobile terminal. The method comprises the steps of obtaining locating position input by a user terminal, and obtaining a locating scene image corresponding to the locating position; according to a dark channel image and a reference dark channel image corresponding to the locating scene image, obtaining visibility representation information corresponding to the locating information; and displaying the visibility representation information in the corresponding locating position of an electronic map. According to the information display method and apparatus, the computer readable storage medium and the mobile terminal, the visibility representation information is displayed on the electronic map; and a user views air visibility of the locating position through the electronic map, so that the user can be assisted to be familiar with road conditions and the travel safety is ensured.

The invention relates to the technical field of application of near-panoramic digital images, in particular to a close-range image traffic violation and road condition photogrammetry system based on Wifi signals, which comprises an automobile, a base station and an automobile administration office, the base station is laid at a position with more traffic flows, and a data bus for transmitting bigdata is laid between the base station and the automobile administration office, the vehicle administration office is built in each city, a vehicle-mounted wifi router is installed on the vehicle, multiple adjustable transmitting antennas are movably arranged on the outer walls of the four corners of the top of the vehicle-mounted wifi router, and a data line interface is formed in the outer wall of one side of the vehicle-mounted wifi router. The beneficial effects of the invention are that the system achieves the real-time detection of the automobile through the panoramic look-around system of the automobile, transmits the data obtained through the central computer database and the data obtained through the control center to the base station at the same time, determines a violation detection result through comparison, is more accurate, and brings convenience to related workers and drivers.

The invention discloses a multifunctional intelligent traffic signboard, which comprises a signboard main body comprising a first signboard main body and a second signboard main body and an intelligent traffic system including a wireless communication module, storage modules, an analysis module and a management module. The analysis module analyzes road condition information of each road section inreal time and sends analysis results to the management module, and the management module decomposes the analysis results into a plurality of secondary analysis results according to the road sectionsand sends the secondary analysis results to the corresponding storage modules for storage; the storage modules send the corresponding secondary analysis results to a user side of a registered and logged-in user of the intelligent traffic system within the coverage range of the storage modules; and the storage modules also control the display of the road state on the second signboard main body. According to the invention, a road congestion analysis result can be sent to a user connected with an intelligent traffic system of the signboard in a coverage range, and route adjustment suggestions areprovided for the user, so that the user can drive vehicles more smoothly and safely.

The invention discloses a calibration method and calibration system of a lane yaw early warning system and a vehicle to improve the calibration efficiency of the lane yaw early warning system. The method comprises the steps that a road condition image in front of a road in the vehicle running process is obtained; a preview image of a yaw early warning camera in the lane yaw early warning system iscompared with the road condition image; and the yaw early warning camera is controlled to rotate so as to adjust the position of the preview image of the yaw early warning camera in the road condition image, so that the position conforms to a calibration specification

The invention discloses a manual wheelchair with stepless transmission ratio adjustment. Existing manual wheelchairs are very strenuous in climbing. The manual wheelchair in the invention comprises achair frame, hand-cranking wheel assemblies and continuously variable transmissions; the two hand-cranking wheel assemblies are arranged at the two sides of the bottom of the chair frame respectively;the hand-cranking wheel assembly comprises a main wheel, a hand wheel ring, a tubular wheel shaft and a driving rotating shaft; the tubular wheel shaft is supported at the bottom of the chair frame;the main wheel is fixed with the outer end of the tubular wheel shaft; the driving rotating shaft and the tubular wheel shaft are coaxially arranged, and form a rotating pair; the hand wheel ring is fixed with the outer end of the driving rotating shaft; the number of the continuously variable transmissions is two; the two continuously variable transmissions correspond to the two hand-cranking wheel assemblies respectively; and stepless adjustment of the transmission ratio of the driving rotating shaft to the tubular wheel shaft is achieved. The wheel and the hand wheel ring, which are fixed together, in the prior art are separated into mutual rotation; the transmission ratio of the wheel to the hand wheel ring is adjusted by arranging the continuously variable transmissions; and a user can adjust the transmission ratio conveniently according to the strength of the user and the current road condition.