7 results about "Urban centre" patented technology

The application provides an urban commercial district interaction method, system, device and storage medium in an empty search scene, which comprises the following steps: obtaining remote commercial districts and non-remote commercial districts based on at least the distance between each preset commercial district and the urban center to which the commercial district belongs and the heat ranking of the commercial district in the city; obtaining four edges of a rectangular map area according to the farthest non-remote commercial district in four directions and anchoring the remote commercial districts at the edges of the rectangular map area; establishing an icon for each preset commercial district based on the rectangular map area and merging and displaying the overlapping icons; and adding the user's consumption selection rate to the icons corresponding to the preset commercial districts with the top n heat rankings in the urban commercial districts. The application can satisfy complete display of commercial districts without stacking and shielding, show the user the recommended reasons for the commercial districts, enable the user to see all the recommended popular commercial districts at a glance, reduce the effort of the user to find suitable accommodation commercial districts in an unfamiliar city, and improve the user experience.

The utility model discloses an electric three-wheeled cleaning vehicle, which takes an electric tricycle as a carrier, is matched with a mechanical part, operates and controls the mechanical part through an electric appliance circuit consisting of a left turning handle and a power supply reversing switch, sucks garbage on the ground and stores and transfers the garbage; the mechanical part comprises a suction cup rotating arm assembly, a rotating transmission mechanism, a lifting mechanism, a garbage channel pipe assembly, a dust storage box assembly and a negative pressure system assembly. A right turning handle of the vehicle controls running of the vehicle, a left turning handle of the vehicle controls a rotation transmission mechanism and a suction cup rotation arm assembly to rotate in a scanning mode, a centrifugal fan is started to enable a dust storage box assembly, a garbage channel pipe and a suction cup rotation arm to form negative pressure, and a negative pressure suction cup sucks away ground garbage near the ground and stores the garbage into a dust storage box. And dust-containing air is discharged after being filtered by the coarse filter screen, the cylindrical filter element and the fine filter at the air outlet of the centrifugal fan. The storage battery serves as energy, turning is flexible, operation is convenient and fast, functions are complete, and the vehicle is applied to ground cleaning of urban centers, tourist attractions and residential districts.

The present invention discloses an urban traffic velocity estimation method based on multi-source crowd sensing data. This method, based on roadside pedestrian data and road navigation data collected by smart phones, obtains a final estimated velocity through the steps of missing data filling, self-view velocity aggregation and multi-view velocity fusion. This fine-grained large-scale urban traffic velocity estimation method can achieve velocity estimation on all types of roads, including suburban road sections and paths, instead of just focusing on main roads in a city center. According to the present invention, based on data driving, the urban traffic velocity estimation method does not need to install additional devices on roads, and is low in cost and high in universality. Compared with the prior art, the urban traffic velocity estimation method has higher practicability, theoretical property and applicability, and is of great significance for improving traffic management and planning.

The invention discloses an urban center barrier-free space efficiency optimization layout method based on multiple agents. Comprising seven steps of spatio-temporal behavior information acquisition and preprocessing, urban center barrier-free index extraction, barrier-free degree evaluation system construction, barrier-free space bottleneck identification, barrier-free space multi-agent model construction, multi-agent-based barrier-free space optimization analog simulation and barrier-free space optimization scheme visualization and intelligent regulation. Aiming at the problem that the traditional central region planning design neglects the behavior trajectory of the disabled people, the method achieves the intelligent perception of the spatial-temporal behavior trajectory of the disabled people, facilitates the improvement of the efficiency optimization and reasonable layout of the barrier-free space of the urban central region, improves the accuracy and scientificity of a planning scheme, and promotes the construction of a citizen city.

This invention discloses a collaborative improvement method for horizontal wind speed algorithms in urban street network models. The method includes using high-resolution CFD wind field simulations as near-true values, comparing and verifying wind speeds at different locations in the urban street network model with the near-true wind fields, introducing local roughness and displacement height parameters incorporating building characteristics, and systematically evaluating the impact of combinations of local roughness and displacement height, along with CFD-derived local friction velocity, on wind speed simulation at different scales. Based on the evaluation results, the optimal parameter combination is selected to replace the regional average roughness and displacement height parameters, optimizing the wind speed simulation capability of the urban street network model under non-uniform urban underlying surface conditions. The advantages are: by combining the CFD-derived local friction velocity with local roughness and displacement height parameters, the non-uniformity of the underlying surface height in the city center can be more accurately characterized, thereby precisely simulating the drag effect of urban buildings and helping to obtain horizontal wind speeds closer to reality.

The application discloses a kind of center area non-regular living space full-time simulation optimization method based on multi-agent, including full-time non-regular living space space-time behavior information data acquisition and pre-processing, city center area non-regular living space function identification and index extraction, non-regular living space function-oriented differentiated weight evaluation system construction, non-regular living space inefficient area identification, full-time non-regular living space multi-agent model construction, non-regular living space optimization simulation based on multi-agent and non-regular living space optimization scheme visualization and intelligent control seven steps.The application realizes the intelligent perception and dynamic response of the behavior trajectory of people in non-regular living space in each period of the day, helps to promote the efficiency optimization and structure reasonable layout of non-regular living space in time dimension, improves the timeliness, accuracy and scientificity of planning scheme, and promotes the coordinated people's city construction in full-time.

The invention belongs to the technical field of shield construction, and particularly discloses a shield lubricant capable of realizing rapid muck separation and a preparation method of the shield lubricant. The shield lubricant capable of realizing rapid separation of the muck comprises 25%-55% of alkyl alcohol phosphate salt, 10%-25% of polyethylene glycol, 15%-25% of fatty alcohol polyoxyethylene polyoxypropylene ether and 5%-20% of water-soluble polyether organic silicon. The shield lubricant capable of quickly separating the muck can play roles in lubricating, improving the muck and defoaming cloud points, so that the muck separation efficiency is higher, a mud cake is tighter, and the water content of the mud cake is 1t; 30%. The shield lubricant capable of realizing rapid muck separation is suitable for urban center shield project construction and mud and sand field separation, and has the advantages of high efficiency, low cost, capability of shortening the construction period and the like.