120 results about "Large city" patented technology

The present invention discloses a public transportation passenger OD calculation method based on intelligent public transportation system data. The method is used for analyzing time-space characteristics of public transportation passengers to calculate the passengers to get on, get off and transfer stations according to the fusion of a plurality of data sources of the intelligent public transportation system, obtain the OD matrix between stations of the passengers who have know which stations to get off, perform matrix magnified calculation according to the distribution of the number of the people who get on at the same station at the getting-off station, and obtains the OD matrix of a total IC card sample between public transportation stations. The public transportation passenger OD calculation method based on intelligent public transportation system data takes into account the conditions which are possible to happen when the passengers brush cards in the condition of domestic crowd public transportation after the public transportation leaves the station, clearly distinguish the transferring behavior and excavate the passenger travel modes through adoption of travel data of several days so as to improve get-off station calculation successful rate of each travel at one day and obtain more reasonable and reliable OD matrix. The public transportation passenger OD calculation method based on intelligent public transportation system data is easy to realize and high in practicality, is able to process large data amount and rapidly obtain the activity space-time data of total urban public transportation network, such as get-on data, get-off data and transferring, serves big city public transportation plan operation management and has good social economic benefits.

The invention provides a mobile phone positioning data-based traveling origin-destination (OD) matrix acquisition method, which is characterized by comprising the following steps of: determining a traffic zone division scheme of a certain road net area; acquiring all the mobile phone positioning data of all traveling groups in a certain time range in a specified road net range in the road net area; performing displacement state judgment on each position point of each traveler; obtaining origins and destinations of each traveler in the travel of each time in the certain time range; and mappingthe origins and destinations onto corresponding traffic zones and performing grouping counting on all identified travel behaviors to form original traveling OD matrix data. The method has the advantage that: the traveling OD matrix data in a large city road net range can be automatically acquired with low cost and high frequency fully based on conventional mobile communication network resources by utilizing positioning information in a conventional mobile phone communication network.

The invention provides an expressway journey time prediction method. According to the speed and flow information of each driveway obtained by a detector arranged on an expressway, calculation and prediction of journey time can be realized. The expressway journey time prediction method comprises the following steps: firstly, according to the position of the detector, the expressway is divided into a plurality of sections in space; by information obtained by the detector in one section, average speed of a detected section is calculated, and the future value of speed is predicted by a neural network; a data fusion method is adopted to carry out speed fusion for the detected section, thereby obtaining the space average speed of the section; and then the journey time of the section is calculated by a space-time discrete method; journey times of all sections are calculated in turn and are added up to obtain the journey time of the entire expressway. The expressway journey time prediction method can predict the journey time of an expressway so as to guide vehicles to make reasonable use of the expressway during going out, thereby playing an important role in relieving traffic congestion in large cities.

The invention discloses a computer recognition method of GPS (Global Positioning System) positioning-based transportation mode combined travelling. The method comprises the following steps of: acquiring data information such as travelling point and space tracks, instant speed and longitude and latitude of combination of multiple travelling modes of a traveler by using a GPS mobile positioning technology; carrying out mode recognition on the combination of multiple travelling modes by adopting data mining methods such as a BP neutral network through combination of a GPS technology and a GIS (Geographic Information System) technology, extracting information including geographic locations of a travelling time point, a travelling mode change time point and a transformation point of the traveler, and finally researching and developing one set of complete recognition and acquisition method which is suitable for the travelling of the combination of the multiple transportation modes in large cities in China.

The invention discloses a data fusion technology-based traffic condition estimation method. The method comprises the following steps: acquiring current traffic condition information by using a GPS, an annular vehicle detector and other sensors based on the principle that much information is helpful for estimating the traffic condition more accurately, then preprocessing the traffic condition information, and performing fusion processing on the traffic condition information and sensor data of weather, time period and different moments together by adopting a Bayesian network to acquire accurate information of the current traffic condition. Besides the current sensor date, the method takes multiple other factors influencing the traffic condition into consideration, and performs fusion processing so as to avoid inaccurate judgment problem brought by single sensor information. The traffic condition estimation method is particularly suitable for traffic environments of large cities.

The invention relates to a method for evaluating the degree of satisfaction to parking spaces based on an interval type-2 fuzzy set. For an underground parking lot with a parking guidance and information system in a small, medium or large city, the method can improve the parking efficiency of drivers and ease traffic jam, and is an effective way and method to solve the problem of 'parking difficulty' in cities. The method comprises the following steps: S1, selecting main factors influencing parking space choice according to the personal need, and analyzing the main factors; S2, carrying out satisfaction evaluation on the remaining parking spaces in a parking lot through interval type-2 fuzzy set comprehensive evaluation according to the factors selected; and S3, carrying out comprehensiveevaluation, and getting evaluation results. The method has the advantage that the parking guidance and information system can help parkers to select optimal parking spaces according with the preferences of the parkers, and thus, the parkers are satisfied with guidance and trust guidance.

This invention generally relates to an elevated transportation network run on electricity with personalized cars that can automatically transport passengers anywhere in a large city or densely populated metropolitan area served by the system without stopping on the way to the final destination. The cars travel on two continuous concrete ribbons with no bumps or cutouts crossing the tire path during switching or on the straight away. The travel path is a combination of central routing and individual car communications with car automatic steering and distance control. The personalized transportation concept can also apply to high speed intercity transportation allowing instant available transportation without intermediate time consuming stops.

The invention relates to a flood-waterlog analysis method for the disaster display in the megalopolis. The method includes the specific steps that a researched flooding area is determined; firstly, a largest possible flooding range is determined, two banks of a river are divided into a left half and a right half for treatment, and the border close to the river is treated as a water inflowing border of the flooding area; secondly, according to the DEM data with the ratio of 1/10000 provided by the State Topographic Administration, the largest possible flooding range is cut out to obtain an area that is the range for the flood analysis research; a required grid model is generated; a floodwater inundation communication algorithm adopts a filling algorithm having seed points. The invention has the advantages that the characteristics of the flood inundation are consistent to the size distribution characteristics of the grid, so adopting the grid can better simulate the inundation characteristics of the flood; a triangle grid model and a polylateral grid model are adopted to better simulate the irregular border.

The invention discloses a lead rail type dual-lead high speed railway system with cylindrical treads and independent wheels and a pavement type urban rail transportation system, wherein the lead rail type dual-lead high speed railway system with cylindrical treads and independent wheels is free from derail and rollover by strong wind, and the pavement type urban rail transportation system is a street pedestrian automatic line, solves heavy traffic problem in large cities by using a method for realizing massive industrial production by using automatic industrial production lines, has a distance of only 50-200 m between an entrance and an exit and a transport capacity equal to that of several subways, and is capable of realizing automatic transfer. According to the lead rail type dual-lead wheel rail transport system disclosed by the invention, leading directions and structures of wheel rails are changed since the railway is invented, so that a high speed railway which guarantees passenger-safety first has a structure which is different from that of a low speed railway, an original railway and a modern railway.

Invention is about a measurement and tracking system for providing the periodical waste collection service on the right time in the large cities. And it is also about for the quick intervention in negative situations in the waste container.

The present invention discloses a shop optimization addressing method based on transfer learning. The method comprises: dividing areas according to an urban road network; employing social media in each area and sensor data to construct features, employing data such as urban planning to construct rule features, multiplying factors such as a distance by the corresponding weight, and employing multi-view learning to perform feature fusion. The transfer learning is employed to transfer large-city addressing knowledge with rich data bulk to a relatively small city to train the optimization shop addressing model of the small city. The rule features and the trained model are fused to obtain a final optimal addressing model. The multi-view learning is configured to fuse different views of data to effectively extend the data of other sources, and based on the transfer learning technology, small cities having small samples also can obtain good effects.

The invention discloses a real-time hydraulic information based dynamic division and control method of a city water supply zone, which belongs to the technical field of water conservancy monitoring. The dynamic division and control method comprises the following steps: an SCADA (Supervisory Control And Data Acquisition) system is used for collecting the pressure data of nodes, such as pressure measurement points, water works, pump stations and the like, from a water supply network; then data is preprocessed by a data mining means; then, pressure data samples are subjected to system cluster analysis; according to a cluster result and a block scale, zone scale indexes are clustered; and finally the blocks are combined and divided by a geographical connected graph to form a final division result. Based on data information obtained from pressure measuring points and in consideration of the practical geographical conditions, the dynamic division and control method can be used for reasonably dividing the city water supply zone and controlling the block scale so that the block scale meets the requirement, thereby bringing convenience for management. The dynamic division and control method can be widely applied to managing, monitoring and controlling the large city water supply dispatching system.

In view of the large urban traffic volume, large city scale, complex structure and other characteristics of China, the present invention provides a road network traffic signal iterative learning control method based on MFD. The road network traffic signal iterative learning control method based on MFD includes the steps: S1, 1.1) acquiring traffic data of a subarea MFD; 1.2) performing subarea MFDfitting; and 1.3) determining the ideal occupancy of roads, based on MFD; and S2, 2.1) performing an opened and closed loop iterative learning control strategy; 2.2) establishing a state space equation; and 2.3) optimizing signal time assignment of each intersection. The road network traffic signal iterative learning control method based on MFD enables the overall structure of the road network toachieve relative balance, can improve the outflow vehicles of the subarea so as to improve the traffic volume of the road network, provides an effective urban road network control means for the traffic manager, and improves the traffic service level of the urban road network.

Disclosed in the invention is a high-efficiency electronic commerce logistics system. A logistics scheduling system crossing logistics companies is established and is connected with an electronic commerce platform; and the utilization rate of logistics materials is improved by four measures. Firstly, geographical coordination information of articles and services on a trading platform are established and thus purchasers can retrieve articles and services on a map conveniently so as to purchase the articles and services at nearest distances, so that trading can be completed by local logistics; secondly, a trans-regional goods lending alliance for sellers is established and thus the sellers can transfer articles and services mutually and conveniently, thereby realizing quick delivery of the articles and services to the purchasers; thirdly, goods warehouses of all large cities are established, and thus sellers can store goods to all warehouse sites in advance and the articles and services can be delivered to the purchasers as soon as possible by the warehouses near purchaser delivery places; and fourthly, cross-logistics-company logistics scheduling system is established; according to real-time geographical information and real-time dynamic states of logistics vehicles of all logistics companies, packet waybill information is provided for logistics companies on the way, logistics companies seize the order, and then the system screens and selects an optimal scheme and determines a carrier.

A process for reclaiming food-contaminated solid waste streams from fast food restaurants, casual dining restaurants, cafeterias, schools, colleges and universities, concession stands, arenas, stadiums, movie theaters, large city street trash bins and other entertainment venues, and other places that offer simple food items for dine in or carry-out that are currently sent to a land fill. The inventive process offers total solid waste reclamation with zero waste water discharge, zero landfill and minor source air emissions, resulting in 100% reclamation and a 100% sustainable process. This process can also be used on solid waste from reclamation centers and manufacturers who currently land fill their waste.

A vehicle-mounted gas cylinder group trailer type gas station comprises valves, pipelines, a control system and gas cylinder groups, and is technically characterized in that a plurality of or a plurality of groups of gas cylinders are arranged on a vehicle-mounted gas cylinder group trailer, and connected in parallel with an external filling receptacle by the valves and the pipelines; the control system sequentially opens the valves on gas outlet pipelines of the gas cylinders or the gas cylinder groups; pressure is charged in the gas cylinder groups by charging ports to accomplish external gas filling; and charging pressure values of the gas cylinder groups are greater than a rated pressure value of a gas cylinder on a natural gas or hydrogen fuel automobile. A three phrase power supply is not consumed, the electric capacity increase expense is saved, compression equipment can be saved, the investment is reduced, and the station is energy-saving and environment-friendly. A substation can operate without being connected with any pipeline, and is simple and efficient. No noise or machine oil pollutant discharge is caused during external gas filling, and the gas station is cleaner. The station is simpler to construct and can achieve reproducible, industrial and massive production. The station is very quick to construct. The station is very small in floor area and facilitates station construction layout in a large city.

The invention relates to a method for managing and charging public traffic riding privilege, which can realize various ticket rules of rail traffic such as day ticket, week ticket and month ticket by using ticket charging, timing and times counting technology. The method improves and perfects the shortcomings and disadvantages of the current charging mechanism in which the existing domestic large city public traffic passengers are crowded, the buses are jam, and the traffic order is disordered; the method is capable of preventing from reversing at a short distance and enjoying privilege for multiple times, even taking bus without fee; the method is capable of reducing the traveling times and crowding of the passengers when getting on and getting off, increasing the passenger traffic efficiency, reducing the operation cost fee, improving the city traffic environment and reducing residents travel fee burden. Therefore, the city passenger traffic becomes more optimistic and reasonable in order to satisfy the demands of conveniently traveling and reducing the fee for passengers.

Parallel elevated roads allow vehicles to run on the elevated roads inversely and mainly serve the urban public transport. The parallel elevated roads are mainly used for the periphery of the main urban zone of a large city, are used for connecting satellite cities on the periphery of the main urban zone, and large, medium and small cities near to the large city, and can form a strip city or a city ring. The intersection and the transfer station of the parallel elevated roads are the key that the parallel elevated roads form road networks and strip and reticular city rings, wherein the road networks and the strip and reticular city rings are communicated and crossed with each other completely. At the elevated planar intersection 15 of the parallel elevated roads for the vehicles keeping right, the vehicles keeping right, such as buses, and the like straightly run on the left side of the central area of the elevated planar intersection 15 or are steered clockwise to pass through the intersection 15 under the indication of signal lamps 12, 12', 12''and 12'''.

A frost-resistant windmill is disclosed to provide supplemental power supply for use preferably in large cities. The frame of the windmill carrying a plurality of blades is made hollow defining a serpentine internal air pathway adapted for introduction of warm air from an external source to prevent freezing when used during winter months. A centrifugal speed adjustment system is provided to reduce rotation speed fluctuations of the load drive shaft when strong wind gusts are encountered. A speed adjustment weight is connected to the drive wheel through a cable such that the position of the drive wheel along the radius of the windmill is defined by an equilibrium between the pull force on the cable and the compression force of the spring urging the drive wheel towards the periphery the windmill.

The invention discloses an intelligent management platform based on dynamic traffic graph spectrum analysis in the technical field of traffic management. The intelligent management platform based on dynamic traffic graph spectrum analysis comprises a data collection subsystem for data collection and coding, a query statistics subsystem for data query requests, a central processing system for dataanalysis and judgment, a data storage module for data storage and maintenance, a cloud server module for data information solution, a mobile intelligent terminal module for data information exchange and transmission, a video playing module for playing road traffic information and a voice prompt module. The invention can report the time required for the vehicle to the next intersection through thevoice prompt module, so as to prompt the vehicle owner to adjust the vehicle speed in time and reduce the waiting time due to the red light. The traffic light control module is electrically connectedwith the traffic signal lights, which makes it easy to adjust the display time of traffic lights in time, effectively reducing the traffic pressure of the large city.

The invention provides a building structure of co-construction of subways and city underground comprehensive pipe galleries. The building structure comprises section shield tunnels. An intermediate partitioning member used for dividing space in each section shield tunnel into two areas in the axial direction, wherein one of the areas serves as a subway travelling cabin, and the other area serves as pipe gallery cabins arranged continuously or at intervals in the axial direction. The invention further provides a building method of co-construction of the subways and the city underground comprehensive pipe galleries. By means of the structure and the method, the problem of building of common path sections of the large city center urban area comprehensive pipe galleries and the subways is solved, underground space is saved, construction disturbance is reduced, and the construction risk is lowered.

The invention discloses a conditioning method for reinforcing the sludge dewatering performance by the aid of micro-bubble/flocculating agent coupling technologies. The conditioning method includes carrying out micro-bubble/flocculating agent coupling conditioning on residual sludge from sewage treatment plants, to be more specific, arranging sludge solution into a reaction device capable of generating micro-bubble and carrying out micro-bubble treatment on the residual sludge by the aid of the micro-bubble with the particle sizes of 10-50 micrometers for the treatment time of 0.5-2 h; adding flocculating agents such as PAM (polyacrylamide) into the sludge treated by the aid of the micro-bubble so as to further promote improvement of the sludge dewatering performance. Compared with conditioning methods only by the aid of flocculating agents, the conditioning method has the advantages that the usage of the flocculating agents for the sludge which is conditioned by the aid of the micro-bubble/flocculating agent coupling technologies and has the identical dewatering performance is reduced by 0.5-1.0 time, and the CST of the sludge is reduced by 30-50%; the conditioning method is easy to implement and low in cost and capital investment, and accordingly a technical option can be provided for solving the problem of difficulty in follow-up sludge treatment and disposal for large cities in land occupation shortage.

The invention relates to a combined support vector machine based method for predicting the power load of a large city in a medium and long term. The method is characterized by comprising following steps: step one, taking the subarea characteristic values and subarea area of medium and long term load of a large city as the inputs, and providing a load density based method for predicting the power load of the large city in a medium and long term; step two, taking historical annual load data as the input, and providing a trend extrapolation based method for predicting the power load of the largecity in a medium and long term; step three, taking expert experience and historical annular load data as the inputs, and providing an expert experience based average annual growth rate method for predicting the power load of the large city in a medium and long term; and step four, based on the results of the step one, two, and three, fitting the data by a support vector machine method, and providing a support vector machine based method for predicting the power load of the large city in a medium and long term. Three load prediction methods are fitted for a second time to obtain a predicted load value of a power network of a large city in a medium and long term.