51 results about "Urban noise" patented technology

Systems and methods are provided for generating destructive interference signals for use in active noise cancellation in an interior setting of defined space. The system employs a combination of conventional ANC and predictive state estimation to generate destructive interference sound waves using a window pane to counteract urban noises.

The invention relates to a distributed urban environment noise real-time automatic monitoring system. The distributed urban environment noise real-time automatic monitoring system consists of a monitoring center and a plurality of monitoring nodes in a coordination mode. Each monitoring node is connected with the monitoring center through the Internet. Preprocessed noise data is transmitted to the monitoring center and is analyzed and displayed by the monitoring center. Node computers receive noise signals acquired by sound pressure transducers through sound cards. Node data management modules, LabVIEW node ends, NAS (Network Attached Storage) server management modules and node communication modules are all arranged in the corresponding node computers. The monitoring center is provided with a center computer. A noise data analysis module, a center data management module, a LabVIEW server, an urban noise GIS (Geographic Information System) display module and a center communication module are arranged in the center computer. According to the invention, the urban noise condition is displayed by a map unique visual effect, a visual, rapid and convenient noise monitoring interface can be provided, the cost is low, and the cost performance is high.

The invention relates to composite-SBS (Styrene Butadiene Styrene block polymer)-particle asphalt modifier with storage stability and aging resistance and a preparation method thereof. The composite-SBS-particle asphalt modifier contains the ingredients in percentage by mass: 15-38% of SBS, 56-82% of deep-activated rubber powder and 3-6% of an interface compatibilizer, wherein the deep-activated rubber powder consists of rubber powder, softening oil and an activator. The method comprises the steps: preparing the deep-activated rubber powder from waste rubber powder by using the high-temperature and high-shear action of a twin-screw extruder; thoroughly mixing the SBS particles and the deep-activated rubber powder by using the blending action of screws, and granulating, thereby preparing the asphalt modifier. Compared with asphalt modified by ordinary SBS modifiers, asphalt prepared by using the composite-SBS-particle asphalt modifier disclosed by the invention has the advantages that the ageing resistance is excellent, and heat storage does not separate out basically. Waste / used tires can be massively consumed, so as to relieve black pollution. According to the asphalt modifier, urban noise pollution and road surface microstructure can be lowered, road surface drainage is facilitated, water splashing is reduced, and the safety performance of driving is improved.

The invention discloses an urban noise identification method based on deep network migration features and augmented self-encoding. The method comprises the following steps: 1, preprocessing each typeof collected urban noise signals, including denoising, framing and windowing; 2, converting the processed noise signal into a spectrogram; 3, performing feature extraction on the spectrogram obtainedin the step 2 by using a plurality of pre-trained deep convolutional neural networks; 4, fusing the obtained feature vectors x by using an augmented auto-encoder; 5, on the basis of the fusion features in the step 4, constructing a multilayer one-class classification model; 6, calculating an output weight and a decision threshold value of ML-OCRLS; and 7, carrying out classification prediction onunknown signals. The hidden layer neurons of the augmented auto-encoder provided by the invention can adjust and optimize all features, main information can be extracted based on ML-OCRLS of the augmented auto-encoder, feature redundancy is reduced, and meanwhile, multiple transfer learning features are effectively fused, so that the classification precision of a classifier is improved.

The invention provides an on-line environment monitoring system. The on-line environment monitoring system comprises a pollution source on-line monitoring subsystem, a main water area water quality automatic monitoring subsystem, an urban air quality monitoring subsystem, an urban noise monitoring subsystem and a monitoring center. The on-line environment monitoring system has the following advantages: the advanced development technology is selected and used, and the application system is simple and convenient to operate and is suitable for being operated and used by people of all levels; the advanced design concept is achieved, expansion can be conducted at any time according to development and demands of environmental management, and the on-line environment monitoring system is compatible with the present application system; the on-line environment monitoring system is favorably reflected in the aspects of network coverage, reliability, stability, real-time transmission speed, data transmission accuracy and safety, operation interface, reasonable construction investment and daily running costs and the like.

The invention discloses a discloses a photovoltaic cell and building integrating building wall panel, which is characterized in that: a face facing the outside of a building is a triangular wavy face; the cross section vertical to a wall face is saw toothed; and the components include a solar cell battery board element (1), an attached frame (3), a substrate thermal-insulation layer (4), a solar controller, a storage battery and an inverter. The device a simple structure, but can use the solar cell board with high efficiency to save solar cell board, and the device can reduce urban noise pollution; meanwhile, when combining LED lighting and display, the device can make the appearance of the building attractive.

The invention discloses a wall greening tile, belonging to a building material, which has simple structure, easy to manufacture, and has functions of protecting wall, bearing weight, increasing green area, purifying air, preserving water resources, lowering indoor temperature, adjusting surrounding humidity, eliminating city noises and improving city ecological environment. And it is applied to outer walls of buildings in various big cities.

The invention discloses an urban road greenbelt noise reduction guiding optimization control method based on a 3D noise map, and the method comprises five steps: road selection, current noise actual measurement, 3D noise map construction, noise evaluation, and noise reduction module matrix building. The 3D noise map construction is the data simulation for the whole measurement region difference calculation based on actual measurement noise data. The noise evaluation is the standardized judgment of the noise value of a road according to the traffic noise standard of the road. A noise reduction module matrix comprises a noise reduction road greenbelt land module, a noise reduction guide structure module, a noise reduction guide facility equipment module and a noise reduction guide plant configuration module, and three types of targeted suggestions are proposed according to the width condition of a noise reduction road greenbelt land. The method saves the treatment cost after a road is constructed and put into use, reduces the impact on the surroundings from the urban road noises, and can minimize the noise pollution caused by various types of urban roads.

The invention discloses a wind power generation building wallboard and a construction method. The module and the method are designed by relying on design experience and design concepts of building integrated photovoltaics (BIPV) of a research and development team, and taking firstly disclosed building integrated wind power (BIWV) as a guide concept. The wind power generation building wallboard is characterized by consisting of a module bracket (1), an air inlet (2), an air collecting channel (3), a heating insulation plate (4) and a generator (5). A rod hanging-type construction installation method is adopted. In the wind power generation building wallboard, due to the adoption of a modular design concept, the passive collection in the utilization of wind energy which is difficult to capture is changed into more active collection and gathering. In addition, due to the combination of energy-saving and heat-insulation materials of buildings and wind energy collection, the structure is simple, the cost is low, the module is easy to maintain, and energy-saving coefficients of energy-saving buildings are increased. The structure of the module has an additional effect of absorbing urban noises.

The invention discloses an ecological water permeable pavement. The ecological water permeable pavement comprises a water permeable surface layer, a plain water permeable concrete base layer and a broken stone cushion layer which are distributed in sequence from top to bottom, wherein the water permeable surface layer is made from a water permeable concrete mixture. The ecological water permeable pavement allows rainwater to infiltrate back to underground through original runoffs on the ground, underground water can be effectively restored and supplemented, underground ecological system balance is maintained, and the rainwater directly infiltrates into soil at the lower part through water permeable runoffs of the water permeable pavement, so that water discharge pressure of an urban pipeline network is reduced while the rainwater is filtered and purified by a soil layer in an infiltration process, and pollution of natural water such as rivers, lakes and seas due to pavement water is reduced; and the water permeable pavement adopts a porous structure, can effectively absorb all kinds of noise of automobiles, motorcycles and environment outside traffic, effectively ameliorates urban noise pollution and is ecological and environment-friendly.

The invention discloses a wall plate module of a wind and light complement power generation building and a construction method thereof. The wall plate module is designed by taking an initially provided building-integrated wind photovoltaics (BIWV) concept as a guide concept according to the building-integrated photovoltaics (BIPV) design experience and design concept of a research and development team. The wall plate module is characterized by comprising a module bracket (1), an air inlet (2), an air collecting channel (3), an insulating plate (4), a generator (5), a solar cell panel (6) and the like. By adopting a modular design concept, wind energy which is difficult to catch is collected actively instead of being collected passively. Moreover, a building energy-saving and insulating material is combined with wind energy collecting and photovoltaic power generation, the wall plate module has a simple structure and low cost and is easy to maintain, and the energy-saving coefficient of an energy-saving building is increased; and the structure of the wall plate module has an additional function of absorbing urban noise.

The invention relates to the technical field of traffic noise source intensity prediction, particularly to a road shoulder-based road traffic noise source intensity prediction method. The invention aims to solve the problem of large deviation between a predicted value and a monitored value of an existing road noise source intensity prediction model. The invention discloses a road shoulder-based road traffic noise source intensity prediction method, which comprises the following steps of recording flow values and current speed values of various types of vehicles of a target road in a preset time period and proportions of various types of vehicles, and then calculating an average speed value of the various types of vehicles; and substituting the total flow value and the average speed value of various types of vehicles and the proportion value of various types of vehicles into a road noise source intensity prediction model, and calculating to obtain the noise source intensity value of thetarget road. The prediction method can play an important role in environmental influence evaluation, sound barrier design and urban noise map drawing.

The invention discloses a sound pollution remote monitoring system for an urban environment management department. The sound pollution remote monitoring system comprises a collecting unit and a receiving unit, wherein the collecting unit comprises a radio module, a filter, an A / D converter and a processor, wherein the processor is used for judging whether a signal transmitted by the A / D converterexceeds a preset threshold value or not; if so, a positioning module and an image acquisition device are controlled to work synchronously; the positioning module obtains the current position information and transmits the current position information to a wireless communication module; the image acquisition device acquires continuous image data by rotating for 360 degrees in the horizontal visual angle in situ and transmits the acquired continuous image data to a storage device for storage; the wireless communication module is used for transmitting the position information sent by the positioning module to the receiving unit; and the receiving unit comprises a main server and a display. The system is used for solving the problem that in the prior art, a relatively good monitoring means doesnot exist in the urban noise pollution treatment, and the purposes of improving the urban noise monitoring and enhancing the evidence obtaining strength are achieved.

The invention discloses a noise monitoring and evidence obtaining integrated system. The system comprises a plurality of acquisition units and a receiving unit. Each acquisition unit comprises a radiomodule, a filter, an A / D converter and a processor, wherein the processor is used for judging whether a signal transmitted by the A / D converter exceeds a preset threshold value: if yes, a positioningmodule is controlled to acquire the current position information and send the current position information to a wireless communication module, and meanwhile, the signal transmitted by the A / D converter is stored in a memory; and the wireless communication module used for sending the position information sent by the positioning module to the receiving unit, wherein the receiving unit comprises a general server and a display. The noise monitoring and evidence obtaining integrated system is used for solving the problem that no better monitoring means is available for urban noise pollution in theprior art, and achieves the purposes of improving the monitoring of urban noise and strengthening the evidence obtaining strength.

A bidirectional composite soundproof curtain belongs to the environmental protection field. The bidirectional composite soundproof curtain relates to a device which can prevent outdoor noise from going into a room as well as can prevent indoor noise from leaking outdoors, and can effectively attenuate the indoor and outdoor noise from under the condition that indoor and outdoor air convection is not affected by opening a window for ventilation, so the curtain is bidirectional; and the curtain is designed based on a noise elimination technology, a sound absorption technology and a sound insulation technology, so the curtain is named as the bidirectional composite sound proof curtain. At present, most of the methods for controlling urban noise pollution still keep at the administrative intervention. The invention aims at providing the soundproof curtain which establishes a sound barrier between noise sources and the room, thus providing cellular governance for an individual.

The invention discloses an ecological pig raising method which comprises the following steps: site selection: selecting a hilly and mountainous area far from the urban noise; pigsty setup: arranging single pigsties in a net manner, wherein the distance between two pigsties is 10-15m; pigsty establishment: building a cuboid with bricks, wherein the length is 3-3.5m, the width is 2-2.5m, the height is 1.5-2m, and a ceiling tripod is of a wood structure; establishing pigsty activity yards, wherein the activity yards are consistent in size, shape and setting, without a ceiling; feeding: feeding 2-4 pigs in each pigsty, and providing food for the pigs regularly; and disinfection: arranging a disinfection channel at the pigsty area entrance, thoroughly disinfecting people entering the pigsty area by disinfection equipment through spraying, and paving lime on the mountainous road for further disinfection. In the ecological pig raising method, comfortable growth conditions are provided according to pig life habits, non-additive nutrients are supplied to the pigs, the raised pigs are of strong constitution, the produced pork has good mouthfeel and is fresh and tender and delicate, and the meat quality meets the requirements of food safety.

The invention discloses sound-absorbing environmentally-friendly recycled asphalt concrete and a preparation process thereof, relates to the technical field of asphalt concrete processing, and solvesthe problem that asphalt concrete cannot effectively reduce urban noise during use due to poorer stability of noise reduction of the asphalt concrete. The asphalt concrete comprises the following components, in parts by weight: 75-80 parts of novel aggregate, 4-6 parts of SBS modified asphalt, 0.2-0.3 part of mineral powder, 16-22 parts of a recycled asphalt mixed old material, 0.04-0.08 part of aregenerant, 2.5-4.5 parts of a fibrous filler, 4-6 parts of a high-temperature-resistant sound-absorbing material, 3-3.5 parts of expanded vermiculite, 0.6-1.2 parts of water glass, and 0.4-0.8 partof microporous calcium silicate. The sound-absorbing environmentally-friendly recycled asphalt concrete provided by the invention has good sound-absorbing noise-reducing effects, can maintain good stability during use, and has a longer overall service life.

The invention discloses an urban low-altitude unmanned aerial vehicle path planning method considering safety risk and noise influence. The method comprises the following steps of: selecting noise experiment data with high stability as original data; approximating an unmanned aerial vehicle noise source as a point sound source; according to a non-directional point sound source geometric divergence attenuation formula, calculating noise sound pressure levels at different distances from an unmanned aerial vehicle; modeling according to the characteristics of different functional areas of a city, setting an environmental noise limit value for each functional area, establishing a city low-altitude three-dimensional airspace graph, and rasterizing the city low-altitude three-dimensional airspace graph; constructing a multi-target path planning model based on safety risk and noise influence; and solving the multi-objective planning model to obtain a group of Pareto solution sets. According to the urban low-altitude unmanned aerial vehicle path planning method, the unmanned aerial vehicle path which meets the urban noise standard and the obstacle avoidance requirement and is low in operation risk can be planned, and therefore reasonable operation of the unmanned aerial vehicle under the influence constraint of existing urban noise is achieved.

The invention discloses an urban noise identification method of a multilayer random neural network based on quantization error entropy. The method comprises the following steps of 1, processing a collected sound signal, performing feature extraction, and establishing a sound database; 2, introducing the minimum quantization error entropy into an encoder of the multi-layer random neural network toserve as a training criterion of encoder output weight, and learning features in data; 3, determining a network structure and parameters of the multilayer random neural network, and taking data in theestablished sound database as training data of the multilayer random neural network; 4, introducing a non-Gaussian noise model; and 5, generating non-Gaussian noise data, adding the non-Gaussian noise data into the original data, and then putting the original data into the model for training. The random neural network framework which is simple in algorithm, free of reverse iteration, high in calculation speed and high in generalization ability is adopted, a QMEE algorithm is added to the coding layer of the model to serve as the training criterion of the coding layer, and noise recognition ismore accurate.

The invention discloses an automobile silencing device with high tail gas purification performance. The automobile silencing device comprises a silencing device body, wherein a shell is arranged on the outer side of the silencing device body, an inner container is arranged on the inner side of the shell, a plurality of connecting plates are arranged between the inner container and the shell in a welded mode, a first silencing groove is formed in one end of the inner container, a second silencing groove is formed in one side of the first silencing groove, a third silencing groove is formed in one side of the second silencing groove, and a fourth silencing groove is formed in one side of the third silencing groove. The automobile silencing device is arranged on an automobile exhaust pipe, noise can be effectively reduced, urban noise pollution can be reduced, automobile tail gas can further be effectively treated and then emitted, air pollution in cities can be reduced, gas in the exhaust pipe can be filtered and then emitted, filtered-out impurities can be collected, the performance of the automobile silencing device is stabler than that of an automobile silencer in the market, the noise is smaller, harmful substances in the tail gas are less, the service life is long, the performance is stabler, the noise reduction and decontamination performance is better, and the environment is protected.

The invention discloses an urban noise collection unmanned aerial vehicle. When the urban noise collection unmanned aerial vehicle lands, firstly supporting seats contact with the ground, the buffering force generated on the ground drives racks to move vertically and upwards, and then gears are driven by the racks to rotate around gear shafts; as the rotation directions of the gears are consistent with the force applying directions of torsion spring, most of the impact force generated when the unmanned aerial vehicle lands is absorbed when the spring applies force, and therefore, after the impact force generated when the unmanned aerial vehicle lands is transmitted to the unmanned aerial vehicle, the impact force is greatly reduced; as a connecting rod is articulated with a landing rod, the connecting rod rotates toward one end, far away from the landing rod, then a first elastic part stretches, and has restoring force to play a damping effect; after the first elastic part damps the unmanned aerial vehicle, the landing rod is in contact with the ground, so that the unmanned aerial vehicle lands stably, and the body of the unmanned aerial vehicle is difficult to shake and tilt.

The invention discloses an inorganic high-performance thin-wall sound barrier for transportation, which comprises a plurality of columns and a plurality of wallboards which are arranged between every two adjacent columns and connected in an up-and-down way, wherein the topmost wallboard is provided with a capping; and the wallboard and capping are cast from the following raw materials in parts by weight: 350-500 parts of cement with the average grain size of 30-60 mu m and the grade of not lower than 42.5, 200-300 parts of active admixture with the average grain size of 0.1-10 mu m and the SiO2 content of at least 85%, 1400-1600 parts of river sand aggregate with the particle size of 0.16-0.63mm, 12-16 parts of high efficiency water reducing agent with the water reducing rate of greater than 30%, 110-160 parts of water, 10 parts of PVA (polyvinyl alcohol) fiber with the length of 8-12mm and 30 parts of basalt fiber with the length of 10-14mm. The inorganic high-performance thin-wall sound barrier for transportation has the advantages of light structural weight, small wall thickness (only 25-45mm), and obvious sound insulation and noise reduction effects. The sound reduction index is 30db or above, and exceeds the urban noise reduction standard requirement.

The invention relates to a novel concrete construction vibration parameter rapid measuring device and method, and belongs to the technical field of concrete construction. The novel concrete construction vibration parameter rapid measuring device comprises an uncovered closed container, a vibration rod and a data acquisition and analysis system; a baffle is arranged in the closed container and divides the inner space of the closed container into an empty bin A and an empty bin B, and the vibrating rod is located in the middle of the closed container and located in the empty bin B; the data acquisition and analysis system comprises a data processing center and an acquisition sensor which are connected with each other, and the acquisition sensor is used for acquiring energy at different distances from the vibrating rod and lateral pressure of concrete on the baffle. Through a simple field test, the vibration parameters of the given concrete mixture in the construction process can be scientifically and rapidly determined, the vibration parameters comprise the concrete pouring thickness, the vibration time and the maximum working radius, the concrete pouring and vibration technology is reasonably optimized, vibration energy waste is reduced, urban noise caused by vibration is reduced, the construction speed is increased, and the engineering quality and the service life are improved.

The utility model relates to an integrated special-shaped container for greening, an accessory of an isolation device with a greening environment effect, in order to improve the safety and warning function of the isolation device, and is convenient for installation, removal and maintenance. It can greatly increase the green area of ​​the city. Reduce noise pollution and air pollution in cities. Applying this scheme to the greening of the surrounding walls of residential quarters and parks can form a greening effect on both sides of the three-dimensional wall.

The invention provides a noise-reducing plate which is made of rubber. A plurality of uniformly distributed bulges are formed on the surface of the noise-reducing plate, and are circular or strip-shaped; uniformly distributed through holes are formed in the surface of the noise-reducing plate. The noise-reducing plate has the beneficial effects that the noise-reducing plate is laid on an underground parking or pavement damaged section, so that city noise can be lowered and the environment is beautified; in addition, the noise-reducing plates with different colors are laid on the pavement damaged section, so that a certain caution function can be achieved.

The invention relates to the technical field of noise control, and provides a green roof and a building wherein the green roof comprises a soil layer, a low-frequency sound absorption structural layer and a structural layer which are arranged in sequence; the low-frequency sound absorption structural layer comprises a plurality of resonance structures which are arranged at intervals and extend in the thickness direction of the low-frequency sound absorption structural layer, and sound channels extending in the thickness direction of the low-frequency sound absorption structural layer are formed between the adjacent resonance structures. Each resonance structure is provided with at least one resonance cavity and at least one resonance neck enabling the resonance cavity to be communicated with the adjacent sound channel, and in the thickness direction of the low-frequency sound absorption structural layer, the cross section size of the resonance cavity is larger than that of the resonance neck. According to the green roof, medium-high frequency sound wave signals are effectively attenuated through the soil layer, low-frequency sound wave signals are effectively attenuated through the low-frequency sound absorption structural layer, attenuation of urban noise within a wide frequency range can be achieved, and the sound absorption and noise reduction performance of the green roof is greatly improved.

The invention discloses an urban noise pollution centralized monitoring system comprising a plurality of acquisition units and a receiving unit; the acquisition units each comprises a radio module, afilter, an A / D converter and a wireless communication module; the receiving unit comprises a master server, a central control processor and a display; the master server is used for receiving signals sent by the wireless communication modules in all the acquisition units and transmitting the signals to the central control processor; the central control processor is used for converting the receivedsignals into decibel values and judging whether the decibel values exceed a critical threshold value or not; and the display is connected with the central control processor and is used for displayingthe positions of all the signals exceeding the critical threshold value and the decibel values on a map. According to the urban noise pollution centralized monitoring system in the invention, the problem that in the prior art, no good monitoring means is for the urban noise pollution is solved, and the purposes of improving monitoring of the urban noise and enhancing the evidence obtaining strength are achieved.