43results about How to "Short travel time" patented technology

A device for a traffic flow assistant for a vehicle includes a surroundings sensor system, which recognizes traffic-relevant objects on a traffic lane, on which the vehicle is traveling, and on at least one further adjacent lane, gaps in the traffic are recognized with the aid of the surroundings sensor system and vehicle-dynamic parameters of the objects are determined and future gaps in the flow of traffic are able to be predicted therefrom. For these recognized gaps and predicted gaps, lane change options are ascertained and, from this and the present and / or predicted presence of gaps in the traffic suitable for changing lanes and the vehicle-dynamic state of the vehicle, a signal for the lane selection is generated, which is dependent on the lane change options and an optimization strategy.

A system for providing the reliable and numerically efficient generation of time-optimum trajectories with easy-to-track or continuous acceleration profiles for simple and blended moves of single- and multi-arm robotic manipulators, such as an extension and retraction move along a straight line or a rotary move following a circular arc, with velocity, acceleration, jerk, and jerk rate constraints. A time-optimum trajectory is the set of the position, velocity, and acceleration profiles which describe the move of a selected end effector along a given path in the shortest time possible without violating given constraints, with a special case being an optimum abort trajectory, which brings the moving arm into complete rest in the shortest time. The invention involves firstly identifying the set of fundamental trajectory shapes which cover all possible combinations of constraints for a given category of moves, e.g., a move along a straight line or along a circular arc; next, decomposing the fundamental shapes into segments where a single constraint is active; and, then, determining the time optimum paths in the segments. As a result, a unique design of time-optimum trajectories is produced based on a set of pre-defined trajectory shapes. The invention also involves the blending of simple moves into a single trajectory by decomposing trajectories of the individual moves into their orthogonal components and overlapping them for a given time interval, which results in a non-stop move along a smooth transfer path.

This invention is directed to methods and systems of online mapping and planning driving tours. The invention may include a user interface capable of displaying a map with one or more destinations and / or displaying a travel route to visit each destination. The travel route may vary based on customizable options. The invention may also provide a tour summary that may show the driving directions for the travel route.

Disclosed herein is a design structure for route planning for global positioning system (GPS) based navigation systems. The method identifies route segments used in a GPS based navigation system and records an actual historical time of travel for at least one route segment traveled by users of the GPS based navigation system travel. The actual historical time of travel comprises the amount of time taken by a user of the GPS based navigation system to go from a beginning of the route segment to an end of the route segment. With embodiments herein, the day and time that the route segment was recorded is also noted. Then, the actual historical time of travel and the day and time for the route segment can be stored in a database. This information can be stored for a single-user or can be combined from a plurality users of the GPS based navigation systems.

The invention discloses a simulation method of ultra wideband electromagnetic waves. The invention proposes a new PML method on the basis of the PML method under a stretch coordinate system and a difference scheme of a higher-order time domain finite difference method (FDTD (2, 2M)). A piecewise linearity convolutional perfectly matched layer (PCPML, Piecewise linearity CPML) under self-adapting absorption parameters absorbs a boundary condition. PML absorption factors are set to be adjustable parameters by the method so as to absorb different ultra wideband electromagnetic waves from high frequency to low frequency, and the parameters are obtained by a mixed method of an optimization method of a real coding genetic algorithm and a linear iteration method in a self-adapting manner so as to adapt to the absorption of ultra wideband electromagnetic waves. The absorption boundary condition adopted by the method can absorb and process high frequency waves and low frequency waves, and also can reduce the reflection error of a matched layer caused by grid dispersion and edge reflection and improve the absorption efficiency and the accuracy of simulation result.

The invention discloses an urban road traffic accident emergency rescue path planning method which comprises the following steps: 1) generating an urban road network topological structure chart, and obtaining traffic flow data and rescue starting and ending point information; 2) analyzing urban road traffic accident emergency rescue characteristics, and selecting a proper rescue path planning method evaluation index; 3) constructing a basic framework of the timing coevolution path planning, and explaining an optimization principle of the timing coevolution path planning systematacially; 4) designing a suitable solving algorithm based on the operational characteristics of urban road vehicles; 5) defining a calculation method of uncertainty factors in the actual traffic environment of the urban road network; 6) outputting the rescue route planning result through computer programming. The invention can solve the problem of urban road emergency rescue path planning.

Disclosed herein is a method of route planning for global positioning system (GPS) based navigation systems. The method identifies route segments used in a GPS based navigation system and records an actual historical time of travel for at least one route segment traveled by users of the GPS based navigation system travel. The actual historical time of travel comprises the amount of time taken by a user of the GPS based navigation system to go from a beginning of the route segment to an end of the route segment. With embodiments herein, the day and time that the route segment was recorded is also noted. Then, the actual historical time of travel and the day and time for the route segment can be stored in a database. This information can be stored for a single-user or can be combined from a plurality users of the GPS based navigation systems.

System for controlling the elevators in an elevator system, which elevator system comprises a number of elevators (1A . . . 1H). The system comprises first sensor means (2, 2A . . . 2H), which are arranged in the waiting area of each elevator (1A . . . 1H) on each floor (F, F1, F2, F3 . . . Fn), which sensor means (2, 2A . . . 2H) are fitted to give information about the presence and number of passengers waiting for an elevator at least in the waiting area in question; means for controlling the elevators, which means are fitted to receive information from the sensor means (2, 2A . . . 2H) about the presence and number of passengers waiting for an elevator and to control the movement of the elevators of the elevator system utilizing the information received from the sensor means.

The invention relates to the technical field of computers, in particular to an automatic driving taxi scheduling system based on big data of car networking. The system comprises an intelligent scheduling system used for data visualization through a computer to visually display the change of traffic information; and the scheduling system obtains automatic driving taxi vehicle information and passenger taxi taking demands, and the scheduling of the automatic driving taxi is improved through adoption of an intelligent algorithm for globally searching an optimal solution to achieve the global optimization and distribution of taxi resources. The automatic driving taxi scheduling system can greatly improve the taxi industry management, decision-making capability and service level, can relieve the pressure of traffic law enforcement manpower shortage, breaks the limitation of a traditional taxi, and avoids the phenomena of a high empty driving rate, uneven resource distribution, passenger picking and carrying. The traffic hazard caused by the self reason of a driver under the condition of driving by a person cannot occur.

The invention proposes an active type vehicle scheduling method at a crossroad. The method comprises the following steps: 1) monitoring the vehicle information; 2) according to the vehicle information, organizing vehicle queues; 3) consolidating the vehicle queues of the same phase; 4) constructing vehicle queue scheduling sequences; 5) obtaining the best vehicle queue scheduling sequence; 6) splitting the overlapped vehicle queues; 7) according to the splitting strategy, performing the active type vehicle scheduling; 8) performing wait-free active-type vehicle scheduling; and 9) executing a fixed time planning strategy. According to the invention, through the utilization of the establishment of a binary tree method for the construction of vehicle queue scheduling sequences, it is possible to search the sequence corresponding to the smallest travel time, and the efficiency is better than the one-by-one screening in the form of full permutation. With regard to the traffic scenario where wait-free passing cannot be realized, the invention proposes the method for splitting the overlapped vehicle queues. With the method, for the condition-meeting vehicle distribution, wait-free passing is possible and the shortest travel time can be obtained.

The invention provides a traffic product aggregate query method and system, and a storage medium. The aggregate query method comprises the steps of receiving a query request sent by a client, wherein the query request comprises a departure place, a destination and a departure date; according to the departure place and the destination, calculating a route, wherein the route includes a through route from the departure place to the destination, and a transit route from the departure place to the destination through one or more transit places; requesting a traffic product engine to call satisfied through products and transit products; segmenting the departure date into a plurality of time periods, and screening out the through product with the lowest price and the transit product with the shortest journey time in each time period to serve as traffic product pushing information; and pushing the traffic product pushing information to the client. A set of optimal traffic product scheme can be given by screening under the condition of querying any point to point and date.

A device for a traffic flow assistant for a vehicle includes a surroundings sensor system, which recognizes traffic-relevant objects on a traffic lane, on which the vehicle is traveling, and on at least one further adjacent lane, gaps in the traffic are recognized with the aid of the surroundings sensor system and vehicle-dynamic parameters of the objects are determined and future gaps in the flow of traffic are able to be predicted therefrom. For these recognized gaps and predicted gaps, lane change options are ascertained and, from this and the present and / or predicted presence of gaps in the traffic suitable for changing lanes and the vehicle-dynamic state of the vehicle, a signal for the lane selection is generated, which is dependent on the lane change options and an optimization strategy.

A mechanism for generating information about passenger flows. Mobile devices of passengers are used for providing information about other devices in the vicinity. The location of the device providing information detects other devices in the vicinity and transmits the information to a central system. Then, the central system associates this information with a location of a person when this person is identified by using an identification device attached to a gate, elevator or other transportation device. When the location of the person identified is known, the location persons having mobile devices in the vicinity can be estimated. Based on this continuously collected information passenger flows can be estimated and based on passenger flows control information for controlling transportation devices can be formed.

The embodiments of the present invention provide an optimal path planning method and an optimal path planning apparatus based on big data. The optimal path planning method comprises: counting a starting point and an ending point, and counting all path information and average traffic times thereof; storing the all path information of the starting point and the ending point and the average traffic times thereof; and through the starting point information and the ending point information entered by a user, recommending the multiple paths to the user from the stored multiple paths having the samestarting point and the same ending point according to the average traffic times from short to long. According to the present invention, the dynamical change of the paths are planned, and the path withthe smallest average vehicle traffic time is used as the optimal path, such that the shortest traffic time is ensured, the vehicles are reasonablely diverted, and the optimal experience is provided for the user.

A case lid assembly is formed by integrally fitting a brush holder formed of resin and a terminal holder formed of resin to opposite sides of a metal plate which supports a bearing. The brush holder supports a pair of brush bases. The terminal holder supports a PTC element and a pair of electrically conductive members. The electrically conductive members have receptacle terminals and brush base connection portions. Tip ends of the brush bases pass through the metal plate, and come into contact with the brush base connection portions of the electrically conductive members to thereby be electrically connected thereto. The PTC element is accommodated within a PTC element insertion portion of the brush holder which extends through the metal plate in a thrust direction.

The invention discloses a dynamic path planning method based on traffic prediction, whichcomprises the steps ofnetwork model abstraction, network stacking, and spatiotemporal rolling algorithm;the network model abstraction is conducted, specifically, a real road is transformed into a network diagram structure of nodes and weights, and the network model abstractionis divided into an upper layer network model abstraction and a lower layer network model abstraction, and the weight setting comprehensively considers the traffic flow density and the path length; the network stacking is conducted, specifically, real-time traffic information is integrated with predicted traffic information of multiple step lengths to obtain a final network model;and the spatiotemporal rolling algorithm comprises atime rolling process and a space rolling process, the traffic state is refreshed according to a certain time interval, and dynamic planning is realized. According to the dynamic path planning methodbased on traffic prediction,it can be ensured thatthe increase of the travel path is within a certain range in the case of relatively congested traffic, and the travel time is greatly shortened.

The invention discloses a vehicle routing method for simulating missile guidance. The principle and the method are used for simulating missile guidance so that a missile needs to overcome earth gravity, air resistance and the like, and a vehicle can avoid congested road sections (save travel time) in running so that vehicle routing is realized. The method includes a global mode and a stepping mode, and the two modes respectively have advantages. The stepping mode places particular emphasis on achieving a single-vehicle routing goal, and the global mode simultaneously achieves the single-vehicle routing goal and a system optimization goal. By being improved, the vehicle routing method for simulating missile guidance can also be used for realizing routing to avoid the congested road sections (save travel time) and shorten travel distance. The method is a dynamic routing method, and the single-vehicle routing goal can be changed when the vehicle runs. Compared with other methods, the method is suitable for routing of urban intelligent transportation, so that the vehicle using the method avoids the congested road sections.

The invention discloses a medical-deficient area identification method based on multi-level medical resource balance. The method comprises the steps of S1, collecting data; S2, establishing a logic framework for 2R grid-hierarchy method; S3, completing permanent resident population data gridding based on administrative unit permanent resident population data and night light image data; S4, calculating the accessibility of the medical space; S5, carrying out multi-level medical resource space superposition and medical-deficient area identification to obtain the spatial accessibility range of medical resources of each level of the research area, and forming a multi-level medical resource space; superposing the multi-level medical resource space layers by utilizing GIS space superposition analysis to obtain a multi-level medical resource space balance distribution diagram of the research area, and identifying the type and the space pattern of the medical-deficient area; and subjecting thegrid distribution diagram of the permanent resident population and the multi-level medical resource space balance distribution diagram to superposition analysis, so that the population distribution and aggregation conditions of the medical-deficient area are accurately identified, and policy suggestions and scientific references are provided for urban public medical resource planning.

The invention discloses an underwater low-disturbance separation device and belongs to the technical field of mechanical structures. The underwater low-disturbance separation device is applied to a vertical floating warhead of a long-range self-propelled naval mine. Due to the low-disturbance separation function of the underwater low-disturbance separation device, the initial launching disturbance of an engine can be reduced, finally the quality of a floating trajectory is improved, and trajectory distribution is reduced. In the service period, the vertical floating warhead is moored underwater in a two-point mode through the separation device and a mooring system installed at the tail portion of the vertical floating warhead so as to be concealed for waiting to make an attack; when an attack instruction is received, the engine is started, and the internal pressure of the engine is rapidly increased through generated fuel gas; when the internal pressure reaches a certain value, a limiting plug of the separation device is pushed to cut off a shear pin and move downwards, and limiting on a steel ball is relieved; and when the working pressure of the engine is larger than the environment pressure, an inner shell of the separation device moves and is separated from an engine connecting flange, a connecting rod is driven to disengage from the vertical floating warhead, and the warhead is separated from the mooring system and starts to vertically float to attack a target. Sealing, underwater two-point mooring, underwater ignition liberation, underwater corrosion resistance, parasitism resistance and the like of the underwater floating warhead can be realized through the underwater low-disturbance separation device.

In a method for operating a screw assembly, having a spindle, which is rotatably supported on at least one end, and a nut, which is drivable by the spindle in a forward-feed direction, the nut being braced transversely to the forward-feed direction on a primary subassembly, and the spindle rpm is selected as a function of the position of the nut such that this rpm is just below a position-dependent limit rpm, in order to attain the shortest possible travel time.

The invention relates to an automatic anti-freezing device for a power station direct air cooling unit based on a louver wind shield. The automatic anti-freezing device comprises temperature-measuringcables, temperature measuring points, a data monitoring and processing unit, an automatic executing mechanism and the louver wind shield. The louver wind shield is mounted at an air inlet of an air cooling fan. The multiple temperature-measuring cables are arranged on the air outlet face sides of fin radiating tube bundles, each temperature-measuring cable is internally provided with the three corresponding temperature measuring points at equal distances and connected with an input channel of the data monitoring and processing unit. When the displayed temperature of any one of the temperaturemeasuring points is excessively low, the data monitoring and processing unit judges the specific position immediately, the automatic executing mechanism closes the louver wind shield of a corresponding air cooling unit body, and thus cold air is cut off. The automatic anti-freezing device has the advantages of simple structure, low cost, short stroke time and significant air-blocking effect, theproblem that the fin radiating tube bundles of an air cooling island are frozen in winter can be effectively solved, the back pressure in winter can be reduced by about one KPa, and the heat economy of the unit is improved by 1%-2%.

The invention discloses a dynamic path planning algorithm and system based on passage time and vehicle speed prediction. The algorithm comprises a lower-layer algorithm OptSub and an upper-layer algorithm DyPath, and dynamically plans a vehicle driving path in real time according to future path prediction passage time data in a vehicle driving process, so as to enable the passage time of a vehicle in a complex path to be the shortest. Therefore, intelligent traffic is realized. The real-time average vehicle speed of each road section and the predicted future average vehicle speed are combined in the driving process, the real-time passing duration of the road section is calculated, the passing duration in a period of time in the future is predicted, and the path is dynamically adjusted. According to an existing traditional prediction algorithm, real-time road conditions are used for optimizing path selection, but the change of traffic conditions of future road sections cannot be coped with. The algorithm and the system have correctness, effectiveness and applicability, the road traffic capacity of vehicles is improved in an environment with frequent road state changes, and convenience is brought to urban traffic.

A route analysis device of the present invention is for analyzing a route from a departure location to a destination. This device includes: a traffic condition prediction unit (11) that, for each of multiple future times, predicts a traffic condition in each of multiple zones that exist from the departure location to the destination; an estimation unit (12) that selects one of the traffic conditions predicted for each of the future times in accordance with the elapsed time from when prediction was performed by the traffic condition prediction unit (11), and, using the selected traffic condition, estimates a travel time that corresponds to the elapsed time in each of the zones; and a route analysis unit (13) that, using the travel times estimated for the zones, calculates the smallest value of the travel time from the departure location to the destination.

The invention relates to a road network building and evolving method improving travel efficiency. The method includes the following steps that 1, an initial road network is built with the connection degree between nodes serves as a standard; 2, an update scheme is selected for the built road network, the road network is updated according to the selected scheme, and it is guaranteed that all roads in the updated road network meet the requirements of the three-grade service level. According to the method, travel behaviors of travelers are fully considered, a road network structure and a grade configuration method are disclosed with meeting travel requirements and improving travel efficiency as driving force,, effective road resources can be fully used, and travel time can be shortened to the largest extent.

The invention discloses a driving path planning method and system based on accident risk cost, and the method comprises the steps: obtaining historical traffic accident data, and carrying out the preprocessing of the data; establishing an accident risk cost evaluation index system according to historical traffic accident data; determining the weight of each index, and determining the accident risk cost of each road section according to an accident risk quantification model; and constructing an example network, and based on the starting point, the terminal point, the accident risk cost of each road section and the travel time of each road section, adopting a K shortest path solving algorithm to obtain an optimal path. According to traffic accident data, a risk evaluation system is constructed from accident characteristics, an accident risk quantification model based on an entropy weight method is established, and a path planning algorithm comprehensively considering risk cost and passing time is designed, so that route guidance is provided for driving of a driver, and driving safety is improved.

The present invention relates to a repair material for an asphalt road and a method for repairing roads using the same. More specifically, the present invention provides a repair material capable of selectively filling a relatively wide damaged portion and a relatively small crack portion such as a crack on an asphalt road, reduces construction time by removing a step for heating asphalt and quickening the curing speed of the repair material, prevents water permeation by having excellent binding force with existing road pavement materials and waterproof properties, and further improves durability even when dynamic loads of vehicles are repetitively generated by having repaired road surfaces connected to each other. To this end, the repair material for an asphalt road comprises epoxy mortar which is formed from high speed hardening epoxy and silica sand, and the method for repairing roads using the same comprises the first step of preparing epoxy mortar by mixing the repair material on the repair portion of an asphalt road, the second step of filling the damaged pavement surface with the epoxy mortar and then carrying out plastering work, and the third step of hardening the repair pavement material.

A double-layer cutting device for a motor of a profiled plate machine belongs to the technical field of manufacturing metal cool-bending sheet processing device. The device mainly comprises an uprightpost (22), the two ends of which are fixed on a lower mounting plate (1) and an upper mounting plate (8), a knife board mounting frame (15) provided with a lower cutter (17) of an upper layer and a upper cutter (19) of a lower layer, a guide rod (2), a vertical bearing seat (13), the two ends of which are provided with transmission shafts (14), an electromotor (21), an eccenter (12) provided witha brace, a sliding bush (4), an active plate (3) respectively provided with the upper cutter (16) of the upper layer and the upper cutter (18) of the lower layer, an optically controlled angle seat (10) provided with an inductor (11), an induction baffle (9), a non-oil lubrication shaft sleeve (25) arranged in the slide sleeve (4) and fixed on the active plate (3), etc. The device has the advantages of compact integral structure, stable working, high reliability and short journey time, thus quickening efficiency of a whole production line; the surface of the plate after being sheared is beautiful and has no deformation.

The invention discloses a method and a system for recommending a combined traffic scheme based on cost. The system includes a module judging whether a combined traffic module is needed, a module for acquiring a bus traffic route and calculating the cost and time of the bus traffic trip, a module for calculating the planned taxi taking mileage, a module for selecting the taking order of taxis and bus traffic, a module for recommending a combined traffic scheme of first taxi and next bus, and a module for recommending a combined traffic scheme of first bus and then taxt. The method and the system of the invention solve the technical problem that the combined traffic scheme cannot be recommended to the user.