422 results about "Urban landscape" patented technology

The invention relates to a three-dimensional model reconstruction method of tree point cloud data based on partition and automatic growth, comprising the following steps: preprocessing; estimating the main curvature of point cloud; partitioning data according to the main curvature; calculating a framework of a principal branch of branches by the partitioned point cloud belonging to a branch part;leading from the framework of the principal branch of the branches to generate twigs of the branches by the partitioned point cloud belonging to a leaf part; and generating a branch mesh model and adding a leaf model at the ends of the twigs of the branches. In the method, the three-dimensional reconstruction model which is faithful to original entities can be obtained by means of the scanning data of a laser scanner; the reconstruction model of the tree point cloud data can be obtained based on data partition and growth of the twigs of the branches, thus the method has simple algorithm and accurate calculation result; and the calculation result has important application value in the fields such as virtual reality, computer games, natural scene simulation, urban landscape design, film production, three-dimensional reconstruction of trees, agriculture and forestry measurement and the like.

The invention discloses a high-resolution remote-sensing multifunctional urban land spatial information generation method. According to the method, a complex system rank theory is introduced; an urban land spatial information classification system with three rank scales, i.e. a multifunctional target landscape type, a functional area type and a land cover type, which self-adapts to urban planningmanagement and environmental renovation, is proposed; and on the basis of realizing the treatment of fine correction and alignment on remote-sensing images of a Landsat TM, a Google Earth and auxiliary maps, the Landsat TM is applied to carrying out urban landscape type classification, a three-level rank classification type-merged combination and an information mining knowledge base are constructed, the classified information is merged to form a first-level classification result of urban land, the digital functional areas are classified into a second level and the land cover is classified into a third level under the constrained control of higher-level classification information. The method has the characteristics of low cost, high accuracy of classification and strong targeted application, and thus, the requirements on target applications, such as ecological urban design, urban environmental management and the like, are better met.

The invention relates to an estimating method of the main curvature and the main direction of point cloud data, which comprises the following steps of: preprocessing, estimating a normal transversal curvature, fitting a Weingarten matrix, computing the characteristic value and the characteristic vector of the Weingarten matrix and computing the main curvature and the main direction. In the method, the main curvature and the main direction faithful to an original object are obtained only by utilizing the scanning data and the estimated normal vector of a laser scanner. The main curvature and the main direction are computed by the method through least square linear fitting and the characteristic value and the characteristic vector of the matrix, the algorithm is simple, the computing result is accurate, and the time complexity is highly effective. The method is called as a normal transversal fitting method, and the computing result thereof has important application value in the fields of virtual reality, computer games, natural scene simulation, urban landscape design, data compression, characteristic extraction, object 3D reconstruction and the like.

The invention provides a method for measuring and reconstructing a tree based on single three-dimensional laser scanning, and relates to the technologies of computer graphs and computer vision. The method comprises steps of data preprocessing, axial estimation, three-dimensional framework computation and three-dimensional model generation. The method only utilizes single scanning data of a laser scanner to obtain branch shape and radius information faithful to the primary tree, carries out main operations in a two-dimensional image space, has simple and effective algorithm and accurate reconstruction result, and has important application values in the computer graphics application fields such as virtual reality, computer game, natural scene simulation, urban landscape design and the like and in the fields such as agriculture and forestry investigation, tree measurement, etc.

The invention discloses a landscape water quality online early warning system which comprises a landscape water quality online monitoring system, a data center and a main control computer. The landscape water quality online monitoring system is used for monitoring landscape water quality data and performing data transmission with the data center; the data center is used for controlling the landscape water quality online monitoring system and storing water quality data sent back by the landscape water quality online monitoring system; the main control computer processing data in a database at any time by calling and operating a functional module, and realizing the analysis and management of online monitored water quality data; and when water quality is worsened, the main control computer performs forecasting and early warning, and puts forward a contingency plan according to early warning situations. The variation trend of water quality can be mastered through the landscape water quality online early warning system, the water quality worsening trend can be early warned in time, the water environment quality of urban landscape water body is guaranteed, and scientific basis and technical support are provided for the effective analysis and management of water quality data during the running process of landscape water body.

A method of near-field electromagnetic ranging and location exploits the long-wavelength, near-field characteristics of low-frequency RF signals like those in the vicinity of the AM broadcast band. These signals are robust against scattering from small objects and only mildly perturbed by the urban landscape including building structures. They are thus amenable to an RF fingerprinting approach exploiting a coarse calibration to capture the behavior of the gradually varying signal characteristics. In embodiments, a method of near-field electromagnetic ranging and location may exploit transmit tags transmitting to an infrastructure of locator-receivers, or locator-receiver tags detecting signals from an infrastructure of fixed transmitter beacons. In still further embodiments, fixed transmitter beacons may be supplemented by uncooperative signals sources including signals-of-opportunity like AM broadcast band signals.

The invention discloses a method for establishing an urban landscape water body ecological system. The method comprises the following steps: improving a water body substrate; planting submerged plants by using a method that upright posts are adopted to mark areas, so as to establish an underwater frost; planting layered emergent aquatic plants; putting zooplankton (daphnia magna) so as to improve the transparency of the water body; putting aquatic organisms such as fishes, shrimps and shells, so as to complete the water body ecological system; maintaining and managing the ecological system. Through the adoption of the method, the quality of the water body can be remarkably improved, the transparency can be greater than 2.0m, the quality can meet the III-type water quality standard for a long time, black, smell and dirty water bodies with blue-green algae can be thoroughly eliminated, and the water body is always kept clear completely.

A water eco-environment protection method based on water plant harvesting. The invention relates to a water eco-environment protection method, which is characterized in that water plants are cultivated in a water body or naturally recovered water plants are utilized; nitrogen and phosphorous nutrients are absorbed by water plant growth; the water plants are harvested in growth period by manual work or waterweed harvesting equipment so as to promote the regrowth of the water plants; harvesting is carried out for multiple times, ends in the growth period and is carried out for the last time after the water plants grow seeds or vegetative propagule so as to extract the nitrogen and phosphorus nutrients from water in the form of water plant residues. The invention aims to maximize the accumulated biomass of the water plants during the whole growth period or optimize the water quality purifying effect and simultaneously remove nutrients in the water body and deposits, alleviate the eutrophication process of the water body and prevent the water plants from decaying and polluting the water body once again. The method provided by the invention is suitable for daily ecological maintenance of shallow lakes, urban landscape water, slow flow rivers, small reservoirs, wetlands and ponds.

The invention relates to a tree modeling method based on skeleton point cloud. In the method, scaffold branches of the tree and outline of the crown which are sketched manually are taken as input automatic constructed tree model, comprising the following steps: extracting two-dimensional skeleton from the sketched strokes through pixel analysis; constructing a three-dimensional skeleton point cloud with two two-dimensional skeletons; expanding the two-dimensional skeleton into a three-dimensional scaffold branches skeleton under the guidance of the three-dimensional point cloud information; and constructing twigs and leaves based on the outline of the crown. The invention has easy application, simple algorithm and high modeling efficiency, and can create tree models with sense of reality. The modeling results of the invention have significant application values in fields of computer games, three-dimensional films, network roaming, urban landscape design and the like.

The invention relates to a treatment device for a eutrophic water body, in particular to a combined bio-floating bed. The bio-floating bed comprises a bed body which is formed by connecting a plurality of floating bed single bodies and an aeration cavity in the bed body, wherein an aeration device is arranged in the aeration cavity. According to the combined bio-floating bed, a minitype aquatic ecosystem is built through increasing dissolved oxygen in the water body, introducing aquatic plants and increasing population and quantity of microorganism, nitrogen and phosphorus nutrients in the eutrophic water body in an urban landscape can be stably and effectively removed, and a new process is provided for water quality preservation in the northern urban landscape water body which takes tail water of an urban sewage treatment plant as the main nourishment source.

The invention provides a crape myrtle nursery stock cottage cultivation method which comprises the steps that 1. the method is carried out on July and August in each year; 2. chemical weeding is forbidden in a scion collecting field, and nursery stock water permeating is carried out 20 days before dry scion collecting; 3. 25 cm-30 cm deep ploughing is carried out on a selected field parcel; 4. soil is subjected to disinfection; 5. column standing and shed building are carried out, and sunshade net covering is carried out for sun shading; 6. after a seedbed is subjected to complete watering, S-metolachlor is used for being sprayed to cover weeds; 7. annual half-lignification branches are selected for pruning; 8. too-tender tops of the branches are removed, 40 g of Guoguang naphthylacetic acid powder and 40 Kg of water are mixed to form a solution in a dissolution mode, and cutting slip soaking is carried out for 15-20 minutes; and 9. before cottage, water is sprayed to the seedbed for 3-4 times, the cottage depth is 1/3-1/2 of the cutting slip length. According to the method, crape myrtle seedlings cultivated in a cottage mode are high in survival rate, quick in growing, long in flowering phase and capable of being used as urban landscape trees for planting.

The invention discloses a magnetite-zeolite magnetic biological carrier material, as well as a preparation method and an application method thereof. The magnetite-zeolite magnetic biological carrier material adopts raw materials such as zeolite, magnetite and cement. The preparation method comprises the following steps of: smashing and sieving the zeolite and magnetic iron ores, then adding the cement, mixing to be uniform and then adding water, pelleting, moulding and standing for more than 10 days at normal temperature, and continuously spraying water onto the surfaces of the obtained particles during standing so as to keep the surfaces of the particles to be wet, thus the finished product is obtained. The magnetic biological carrier disclosed by the invention can be applied to deep treatment of domestic sewage secondary treatment water, deep treatment and resource utilization of industrial waste water, deep treatment of micro-pollution drinking water and urban landscape water treatment.

The invention discloses a bacillus amyloliquefaciens and an application thereof. The bacillus amyloliquefaciens with the China general microbiological culture collection number 4516 (China general microbiological culture collection (CGMCC) NO: 4516) has an obvious inhibiting effect on the growth of algae, especially has a high-efficiency inhibiting effect on the growth of anabaena flos-aquae, and can be applied to algal bloom control or algal removal of water environments such as lakes, urban landscape water and the like which are in eutrophication state.

The present invention relates to a wind-solar hybrid aeration sewage treatment system and an application thereof. The wind-solar hybrid aeration sewage treatment apparatus comprises a water inlet system, a wind-solar hybrid electricity generation aeration system, an artificial floating island sewage treatment system and a drainage system, and is provided with a wind-solar hybrid electricity generation device, wherein the bottom of the wind-solar hybrid electricity generation aeration area is provided with an aeration pipe connected with an aeration pump, and the artificial floating island sewage treatment area is provided with a foam plate with a thickness of 5 cm. According to the sewage treatment apparatus designed in the present invention, the wind-solar hybrid aeration technology is adopted, the inexhaustible solar energy and wind energy are adopted as the electric energy source of the aeration pump so as to make the solar energy and the wind energy provide the clean and free electric energy for the ordinary oxygen supply aeration pump, and the solar energy and the wind energy can be complementary so as to provide strong practicality and promotional values. In addition, the designed water surface is provided with the artificial floating island device, such that the water quality is effectively improved, the environment beautification function is provided, and good application prospects are provided in the comprehensive management of the urban landscape water body.

The invention relates to an ecological filter groove construction method for cutting urban runoff pollution. An ecological filter groove is constructed in an urban green belt, and a water distribution groove and an energy dissipation plate are connected to the front of the ecological filter groove; the ecological filter groove is sequentially divided into a gravel layer, a ceramsite layer, a zeolite layer, a quartz sand layer and a soil layer from bottom to top, and shrubs and herbs are planted in the soil layer. Compared with the prior art, the configuration method of soil, large-particle-size quartz sand, middle-particle-size zeolite, small-particle-size ceramsite and large-particle gravel is adopted, good growth of plants can be guaranteed, ground surface runoff pollutants can be effectively held back as well, meanwhile the shrubs and the herbs are planted in the ecological filter groove in a matched mode, the soil layer is covered by grass sod, the vegetation is developed in root system, has good absorption function to nitrogen and phosphorus, can beautify urban landscape, and can generate good landscape benefits. According to the ecological filter groove construction method, the urban runoff pollution is cut down by constructing the ecological filter groove, and the method has the advantages of being easy and convenient to operate, low in cost, easy to manage and the like.

The invention provides an urban landscape type rotating rain spraying type multi-layer photocatalysis ecological purification tower. The tower comprises water-permeable trays, photocatalysis water-permeable basins, ceramsite, plants, a central supporting column, a water pump, a water feeding pipe, a rain spraying pipe, a rotating device and a solar device. The tower has the advantages that the four water quality purification methods including the plant root absorption method, the interception and filtration method, the photocatalysis degradation method and the aeration and oxygenation method are integrated into a whole, the advantages of all the purification methods for removing pollutant in water are brought into full play, the complementary type purification technology is formed, concentration of pollutant such as organic pollutant, heavy metal and the like in water can be effectively reduced, and the water quality purification efficiency can be improved; the water-permeable basins are made of porous foamed ceramic, and therefore the improvement of the sewage purification efficiency of photocatalysis membranes is facilitated; the multi-layer tower type structure is adopted, sewage is filtered and purified layer by layer from top to bottom, and the purification efficiency is high; natural light can directly irradiate the photocatalysis membranes, the rain spraying pipe is of a rotatable type structure, the flowing speed is decreased, sewage can be dispersed, and a purification layer below can be covered in a full-area mode.

The invention provides a tree trunk injection liquid containing emamectin benzoate and thiacloprid, and a preparation method thereof. The tree trunk injection liquid comprises, by mass, 2-10% of emamectin benzoate, 2-10% of thiacloprid, 3-15% of a surfactant, 2-6% of glacial acetic acid and 59-90% of an alcoholic solvent. The trunk injection liquid has the characteristics of small dosage, low cost, high control effect, only taking effect on target pests of trees, no damage to natural enemy insects, environmental protection, wide application range, simple and convenient operation, and high work efficiency, is unlimited by geographical conditions and climate change, can be applied in an anhydrous non-contact manner, is safe to human and environment, and can pertinently control pests in forests, urban landscapes, scenic area greening trees, street trees, shelter belts and fruit trees.

The invention relates to a salvaging device, and in particular relates to an efficient rubbish salvaging device for an urban landscaping lake. The efficient rubbish salvaging device for the urban landscaping lake is simple to operate to salvage, and high in working efficiency, and can protect the environment. The efficient rubbish salvaging device comprises a trolley, a left bracket, a storing tank, a right bracket, a cylinder I, a box body, an electric pushing rod, activated carbon, an air pump, a hose, an air outlet tube, an air absorbing hood, an infrared lamp, a water draining tube, an electric valve, an inclined board, a connecting rod, a cylinder II and a filtering net I, wherein the left bracket, the storing tank, the right bracket and the cylinder I are sequentially arranged on the trolley from left to right; the bottom part of the cylinder I is connected with the trolley in a hinging manner; the box body and the electric pushing rod are arranged at the right side of the left bracket. The efficient rubbish salvaging device has the effects of being simple to operate, high in working efficiency, and capable of protecting the environment.

The invention discloses a variable-cross-section concrete continuous bridge construction method, comprising the following steps of constructing a bridge body except a midspan closure segment on a full framing; performing a first stage of dead load analysis on the bridge body except the midspan closure segment according to the stress state of a cantilever beam, and performing a first cross-section reinforcement; removing a support system; performing midspan closure construction; performing a second stage of dead load, live load and additional load analysis and a first stage of dead load analysis of the midspan closure segment according to the stress state of the continuous bridge, and performing a second cross-section reinforcement on the whole bridge body. According to the construction method, the stress state of cantilever pouring construction is simulated by using a support closure method; through simulating a cantilever pouring stress model, the stress state of the variable-cross-section concrete continuous bridge is optimized, the height of the midspan bridge is reduced, the bridge size is decreased, the construction costs are saved, the technical difficulties of construction linear control and the midspan closure are reduced, and the construction period is shortened. Meanwhile, a construction platform with complex sections is provided for landscape modeling by the full framing, and the construction method can be widely used in urban landscape rivers and flyovers.

The invention relates to a low-cost, environmental-protection and high-efficiency alga removal combination material. The high-efficiency alga removal combination material capable of rapidly eliminating algae in water and continuously reducing the alga bloom risk of water is disclosed against abundant growth of alga bloom in water reservoirs, lakes, drinking water sources or scenic water. The high-efficiency alga removal combination material comprises a natural mineral modified material and a removal assistant. The natural mineral modified material mainly comprises zeolite, active carbon, mica powder, kaolin or diatomite and other macro-porous mineral matter powders as raw materials, and can adsorb and co-precipitate alga particles and phosphates through acid modification and function group fixing. The modified material can be added to eutrophic water in an in situ manner, and can also be used in drinking water factories. When in situ addition is carried out, the natural mineral modified material is only added if the density of algae in water, and the removal assistant is added if the density of the algae is high in order to improve the effect. The alga removal material does not use toxic substances in the modification process, can efficiently remove algae in the water, and also can remove nitrogen and phosphorus, reduce release of intracellular toxic substances and reduce the alga bloom risk. The natural mineral modified material is especially suitable for alga control of the drinking water sources, the lakes and urban landscape waters, or is used in stringent control or risk prevention of the alga bloom.

The invention discloses a suspended anti-flood wall which comprises a flood bank, and the crest level of the flood blank is the same as that of an urban waterfront ground. A steel flash board is connected to the top face of the flood bank, a rotary shaft which is arranged on the waterside of the blood bank is arranged at the lower end of the steel flash board, the rotary shaft of the steel flash board is installed in a rotary shaft supporting base, and the rotary shaft supporting base is fixedly arranged on the top face of the flood bank; a flash board limiting baffle plate is arranged on the rotary shaft supporting base; an inhaul cable is connected to the steel flash board; a locking shaft is arranged on the backwater side of the steel flash board, and a locking device matched with the locking shaft is arranged on the top face of the flood bank. Under the condition that the anti-flood safety is ensured, the suspended anti-flood wall has no influence on visual continuity of people, thereby better improving the quality of an urban landscape and solving the problem that the urban landscape and urban flood control are contradicting.

The invention belongs to the field of urban landscape irrigation, and discloses a tree irrigator for urban landscapes, which is used for solving the problem that ordinary irrigators cannot reinforce trunks. The tree irrigator is characterized by comprising a connecting ring hooping a trunk, the bottom of the connecting ring is connected to a supporting assembly for supporting the connecting ring,a clamping device for clamping the trunk is arranged upon the connecting ring, and an irrigating assembly for directly irrigating soil is connected to the connecting ring. The tree irrigator for urbanlandscapes has the function of irrigating the trunk and reinforcing the trunk.

The invention discloses an intelligent collecting device and a method of urban landscape river and lake floating pollutions. The device comprises a floating ring, a cover cylinder, a filter screen bag storage box, a closing guide rail groove, a filter screen bag, a collecting pool, a water pump, a central controller, a water outlet pipe and the like; the floating ring enables the whole device to float on the water surface; the cover cylinder, the filter screen bag storage box, the closing guide rail groove and the filter screen bag are used for collecting pollutants; the water pump is used for extracting sewage and providing drive; and a recovery rope and a floating plate are used for transferring and recovering the pollutants. The device can automatically move for cleaning in polluted water areas for a long time, and finishes the work of automatic filtration, collection and transfer of floating pollutants in large-range water areas of rivers and lakes through intelligent positioning movement.

Systems and methods are provided for improving the flight safety of fixed- and rotary-wing unmanned aerial systems (UAS) operating in complex dynamic environments, including urban cityscapes. Sensors and computations are integrated to predict local winds and promote safe operations in dynamic urban regions where GNSS and other network communications may be unavailable. The system can be implemented onboard a UAS and does not require in-flight communication with external networks. Predictions of local winds (speed and direction) are created using inputs from sensors that scan the local environment. These predictions are then used by the UAS guidance, navigation, and control (GNC) system to determine safe trajectories for operations in urban environments.

The invention provides a buried type ecological environment-friendly trash bin which comprises a bin body, lifting mechanisms and at least one trash storage bucket. The trash storage buckets are arranged in the bin body, and trash throwing-in openings corresponding to upper end openings of all the trash storage buckets are formed in the side faces of the bin body. The lifting mechanisms are used for lifting the trash storage buckets from the bottom of the bin body to a cleaning door. Air filters are further arranged in the bin body, the air inlet of each air filter is communicated with an inner cavity of the bin body, and the air outlet of each air filter is connected with an exhaust fan. The buried type ecological environment-friendly trash bin is designed according to the environment protection idea, a buried type collecting mode is adopted, leakage of peculiar smell is avoided, the volume is large, and the storage space is large; the lifting mechanisms facilitate operation by sanitation workers, and the buried type ecological environment-friendly trash bin has the advantages of being exquisite in appearance, capable of conveniently collecting trash and beautifying the appearance of a city and the like, is suitable for urban landscape roads, business streets and other populated regions, and has good popularization prospects.

The invention relates to an in-situ reducing device of initial rainwater pollutants of urban landscape river. A conventional rainwater port is communicated with an overflow distributing well which is communicated with a rainwater retaining chamber through a water pipe and is provided with an adjustable overflow weir, and suspended organism filling balls are placed in the rainwater retaining chamber. The invention overcomes the defects of reconstruction of urban road surfaces, huge project cost, low possibility of general implementation, limitation of actual spaces of a river way and a bankside on constructing a large-capacity storage pond, processing requirement of a sewage processing plant after raining, large project investment and the like existing in two kinds of methods of source reduction, in-place processing and collection and storage processing. The invention effectively retains granular organic matter at the initial period of raining, reduces the input quantity of the rainwater for the river, and can remove granular organic matter of more than 70% and biologically degrade so as to lower the pollution degree of the initial rainwater on the water quality and the ecology of the urban landscape river. The invention has the advantages of simple structure, reliable effect and convenient maintenance.