1731 results about "Snowpack" patented technology

The invention discloses a snow disaster remote sensing monitoring simulation evaluation method based on a disaster reduction small satellite, comprising the following steps: recognize accumulated snow according to the spectral characteristic of the accumulated snow and form accumulated snow remote sensing images data; create a snow disaster case database and a snow disaster statistical database, the snow disaster case database comprises a disaster time, a location hit by the disaster, an accumulated snow day number, a normalized difference vegetation index NDVI, a population number hit by the disaster and a accumulated snow area, the snow disaster statistical database comprises a total precipitation, a highest air temperature, a lowest air temperature, a average daily temperature, a wind speed and a surface temperature; carry out an accumulated snow depth inversion to a recognized accumulated snow, and respectively store the accumulated snow depth into the snow disaster case database and the snow disaster statistical database; carry out simulation evaluation to a snow disaster according to the data in the snow disaster case database and the snow disaster statistical database. A new and high applicability remote sensing data source is provided for snow disaster monitoring in the invention, and the snow disaster remote sensing monitoring simulation evaluation method has a great importance of disaster reduction and disaster relief works for China snow disaster.

The invention provides an energy stepped system based on pipe network arrangement, flow and temperature potential control and a distribution controlling method, particular to a heat fluid circulating system based on solar heat collection and absorption and heat release by snow and ice melting which applies an energy stepped dual-flow pipe network arrangement mode and an all-weather real-time adjustment mode to roads and other similar building structure bodies. The system and the control method are applied to a linking system of two processes of solar heat collection of the road surface and snow and ice melting in winter, thereby strengthening the internal heat exchange of the road surface, not only ensuring effective collection of solar energy in summer and realizing higher outlet temperature of the circulating fluid, but also achieving rapid smelting of accumulated snow and ice at the middle section of the traffic road surface in winter, improving the condition of the traffic road surface and realizing the maximum utilization rate of energy of a dual-circulating fluid in the processes of heat collection in summer and the heat release in winter.

The invention discloses an urban hydrological simulation system and a simulation method, which relate to the technical field of urban precipitation management. The invention includes a rainfall floodmanagement model, the simulation system includes a time-varying precipitation unit, a surface water evaporation unit, a snow cover and melt unit, a depression interception unit, a soil seepage unit, agroundwater recharge unit, a groundwater and drainage pipe exchange unit, a slope catchment unit, a LID control unit, a region editing unit that are associated with the rainfall flood management model, and the simulation system further comprise a storage module, an aquifer editing module and a groundwater flow editing module. The invention has comprehensive simulation function and can provide comprehensive and representative analysis data through a complete functional system unit structure. The influence of DCIA and TIA setting on runoff generation in urbanization region is analyzed under thepremise of comprehensive consideration of parameters. More objective and accurate reference and opinions are provided for urban planning.

A dual axis tracker is a solar collecting device with fully mobile panel arrays that can be fully rotated 360° and tilted from a 90° position to a 10° position relative to the earth and is easy to maintain and operate. This device has a base support followed by a stable lower column attached thereto and a movable or rotatable upper column that permits full rotation located thereon. This permits the full rotation. A motorized jack is employed to tilt the panel array from the 90° position to a 10°. Since the array is held higher off the ground by a longer lower column, such vertical positioning is achieved in a better manner than prior art devices. Because of these movements more power can be produced in a given amount of time than prior art devices. In addition, during periods of snowfall, this device can collect more radiation off the accumulated snow cover that will surround the device thus taking advantage of said radiation to produce even greater power than previously possible.

The invention relates to a road accumulated snow calamity monitoring and early warning method based on multisource remote sensing data. According to the method, first of all, a cloud-free accumulated snow area product is obtained by performing cloud removal processing on a MODIS accumulated snow area product by use of a cloud removal algorithm; an accumulated snow depth product is obtained through a snow depth reversing algorithm by use of a passive microwave SSM/I and SSMI/I brightness temperature observation, for calculating a whole-road average annual accumulated snow day number of many years and a multi-year average accumulated snow thickness and determining a key accumulated snow road mileage of a whole road; secondly, by use of Landsat and high-definition satellite remote sensing image data, through a normalization accumulated snow exponent and a high-definition accumulated snow exponent threshold method extraction method, accumulated snow is identified, and accumulated snow spatial distribution of each mileage of a key road is extracted; and finally, through a surface temperature, ASTER GDEM, a gradient, an aspect and a meteorological condition, roads prone to icing and roads prone to avalanches and blowing snow are determined. According to the invention, monitoring of road accumulated snow distribution and the roads prone to icing, avalanches and blowing snow are realized by use of the multisource remote sensing data, and monitoring and early warning of road accumulated calamities are accurately realized.

A snow-shovel apparatus and method that allows a person to easily remove compacted snow from underneath a vehicle which is stuck and possibly hungup in the snow. Generally, a two bladed shovel-like design wherein the horizontally opposed blades open up from a folded position next to the handle for use. The shovel with blades retracted is pushed through compacted snow underneath the vehicle, is positioned by the user at the beginning of the shovel stroke where the blades are forced open by telescoping the handle, and snow is withdrawn from underneath the vehicle by the exertion of pulling forces along the handle, drawing the blades and captured snow towards the user. The handle is compressed and the blades retracted when not in use. The under vehicle snow-shovel is especially useful to the traveler as an aid in freeing vehicles that are hung up and stuck in the snow.

The invention discloses a solar energy photo-thermal snowmelt pavement integrating system mainly comprising a solar energy heat collecting system, a pavement heat-radiating system and a control system, wherein the solar energy heat collecting system comprises a heat collector and a heat accumulating water tank; the pavement heat-radiating system comprises a heat tube; the control system comprises a controller and a temperature sensor; and the heat collector, the heat accumulating water tank and the heat tube are sequentially connected through a pipeline and the heat collection and the heat radiation are realized through the control system. By using the system, the solar energy can be converted into the heat energy, thus the accumulated snow on the pavement can be effectively thawed.

A method for constructing rubber particles asphalt concrete road surfaces relates to a method for constructing asphalt concrete road surfaces, aiming to resolve the problems that: the asphalt concrete road surfaces have weak wear-resistant, and the attachment coefficient and the adhesive force are reduced and vehicles have the problem of braking stability when the road surfaces are covered by snow and ice. The construction method comprises the following steps that: compositions by weigh percentage of the following materials are adopted: 76.5 to 91.5 percent of mineral aggregate, 2.5 to 7.5 percent of asphalt, 4 to 10 percent of mineral powder and 2 to 6 percent of rubber particles; the mineral aggregate is heated up to 190 to 200 DEG C, the rubber particles are added into the mineral aggregate with mixing about 20 to 25 seconds, the asphalt heated up in advance and the mineral powder are added into the rubber particles and the mineral aggregate with mixing lasting for 70 to 80 seconds, and then the road surfaces are subject to the pavement, the first stage initial pressure, the first and the second stage re-pressure and the second stage final pressure. The invention can increase the deformation capabilities of the road surfaces effectively, improve the bond state between the road surfaces and snow, and the invention can improve the attachment coefficient, increase the adhesive force, and improve the braking and turning operation stability of vehicles when the road surfaces are cover by snow and ice.

The invention discloses an accumulated snow coverage measuring and calculating method based on satellite-borne multispectral remote sensing data in the technical field of satellite remote sensing image processing and application. For the problems of cloud interference and under-forest accumulated snow observation existing in a current accumulated snow extraction algorithm, the method comprises thefollowing steps: firstly, dividing a selected area into a forest area and a non-forest area based on different types of land, calculating the accumulated snow coverage rate by using Landsat8 data forthe non-forest area, and performing FY-to-FY observation on the accumulated snow coverage rate; performing wave band operation on the multi-wave band data acquired by the 3B, calculating an NDSI snowindex, fitting a linear regression equation for the resampled snow coverage rate and snow index by combining a least square method, and establishing a function relationship between the snow index andthe snow coverage degree; and for the forest region, establishing a function relationship among the snow coverage, the surface reflectance and the forest transmissivity, and converting the snow coverage into a correlation function based on the forest reflectance. The influence of forest canopy shielding can be reduced, and the under-forest snow coverage information can be effectively extracted.

The invention provides an air snow-clearing device, belongs to the technical field of snow clearing equipment and aims at solving the problems that compacted snow is hard to be cleared by means of manpower or snow clearing machinery, environmental pollution is caused and the efficiency is low when snow-melting agents are adopted and added to melt the snow, and the cost is high when the snow is melted by means of resistance heating, microwave heating and the like. An air outlet is formed in one end of a spray pipe, an air inlet is formed in the other end of the spray pipe, the spray pipe is of a gradually-shrinking type structure, and the diameter of the air inlet of the spray pipe is larger than that of the air outlet of the spray pipe; an electromotor is installed at the air outlet end inside the spray pipe, an air-blast fan is installed on an output shaft of the electromotor, the air outlet end of the spray pipe is connected with on end of an arc-shaped pipeline, and the other end of the arc-shaped pipeline is connected with the tail end of a spray head; the air inlet end of the spray pipe is arranged on an inner support rack, and the spray pipe is fixed on an outer support rack. The air snow-clearing device is applied to snow clearing for areas such as car windows, roofs and streets.

The present invention is directed toward the determination of soil water content and the water equivalent depth of snow deposited on top of the ground. The apparatus for measuring soil water content consists of one or more cosmic-ray neutron detectors located above the soil surface. The detectors record neutrons in the thermal, epithermal or fast energy bands. Snow water equivalence is determined by using a thermal neutron detector and an epithermal or fast neutron detector. Neutron count rates for all three energy bands decrease monotonically with increasing soil water content. Epithermal and fast neutron count rates decrease monotonically with increased snow water equivalent depth, but thermal neutron count rates increase at first and then decrease with increasing snow cover.

The invention relates to a snow melting system and a method for recycling accumulated snow, particularly to a hot-air circulating two-layered snow melting system and the method for recycling accumulated snow, which solve the problems that the existing method for treating the accumulated snow wastes resource and pollutes the environment. The hot-air circulating two-layered snow melting system includes a two-layered subsurface-flow constructed wetland landscape pond and a snow melting well, wherein the snow melting well includes a thermal insulation cover, a well wall, a thermal insulation operation door, a heating grate A, a heating layer, a bottom heating pipe, a water drain pipe, a first step, a first rotating shaft, a heating vertical pipe, a groove and a filter grating. The method includes the following steps: collecting the accumulated snow, throwing the accumulated snow into the snow melting well through the thermal insulation operation door, and carrying the melted snow to the two-layered subsurface-flow pond through the deposited and overflowed clear water. The hot-air circulating two-layered snow melting system avoids the environmental pollution caused by snow melting agent, as well as the resource waste caused during accumulated snow transferring and toppling, is environment-friendly, facilitates the timely accumulated snow treatment, avoids the pollution caused by long-time exposure, and solves the road freezing problem caused by repeated freeze-thaw. The method is used for recycling the accumulated snow.

The present invention discloses a road snow remover, and relates to the field of construction machinery. The road snow remover comprises a body used for melting, containing and discharging snow; a snow removal mechanism positioned at the front end of the body and provided with a first snow removal device and a second snow removal device, a conveying toothed belt device for conveying the snow on the snow removal mechanism to the body, and a lifting mechanism installed between the snow removal mechanism and the body and used for adjusting the distance between the snow removal mechanism and the ground. The road snow remover provided by the present invention is simple in structure, convenient to operate, especially high in snow handling capacity, high in efficiency and good in snow removal effect.

A skid for use on a snow blower, where the snow blower includes an auger housing through which snow removed from an area is channeled. The skid includes a body that is secured to a vertical side wall of the auger housing. The body includes a sliding surface which assists the auger housing in sliding over snow-covered regions of the area being cleared; and a rolling surface which assists the auger housing to travel over snow-free regions of the area. A slot is provided in the sliding surface of the skid and a portion of the rolling surface projects for a distance below the sliding surface. An adapter plate may be positioned between the body and the side wall of the auger housing. The adapter plate enables the body to be secured to different makes of auger housing.

The invention provides a road surface ice condition detection and automatic ice-melting system. The system comprises a control system, an energy source system, a detection system, an ice-melting system, a temperature control switch and an image transmitting system, wherein the detection system comprises an ice condition detecting device and a rainfall detecting device; the ice-melting system is arranged in a road surface and is connected to the energy source system; the temperature control switch is arranged between the ice-melting system and the energy source system to control the opening and closing of the ice-melting system; the image transmitting system comprises a camera and an LED (light-emitting diode) display device; the camera transmits the road surface condition to the control system; the control system displays corresponding road surface information prompting on the LED display device according to different road surface information. Due to the fact that the ice condition detecting device and the rainfall detecting device are arranged on a freeway, a road surface ice and accumulated snow condition and a road surface accumulated water condition can be monitored in real time, and early-warning is effectively realized; when the road surface is iced, ice on the road surface can be automatically melted through the ice-melting system, so the whole road surface is kept in a dry state, and the safety and the reliability of traffic pass are improved.

A snow removal vehicle and system is disclosed. The system allows for snow captured by the vehicle to be melted and heated into a heated liquid and thereafter sprayed to remove snow to the sides and rear of the vehicle. Methods of removing snow are also disclosed.

The invention discloses a real-time snowflake deposition simulation method based on a particle system model. The real-time snowflake deposition simulation method is characterized in that snowflake particles are divided into computer-simulated falling snow particles and computer-simulated accumulated snow particles. The method comprises the following steps that: (1) when the snowflake deposition simulation is started, falling snow particles are established and drawn by a computer-simulated falling snow particle model, and the falling snow particles fall from random height circularly; (2) when the falling snow particles fall to a position which is a predetermined height away from a computer-simulated scene ground, a computer-simulated accumulated snow particle model is used for receiving coordinate information of the falling snow particles, and new accumulated snow particles are drawn through a computer at the coordinate position; and (3) dot deposition and surface deposition of the drawn accumulated snow particles are realized on the computer-simulated scene ground. By the method, influence on the falling of snowflakes caused by a wind speed, a wind direction and a gravity field is reflected through the coordinate transformation of the falling snow particles; and the method is high in real-time performance and allows people to feel reality.

An article of manufacture suitable for cleaning the top of a vehicle, comprising: at least one blower: and a support for said blower, wherein said support positions the blower to blow snow or debris from the top of a vehicle. This invention improves on prior art by using blowers to remove snow from large vehicles.

The invention discloses an accumulated snow judging device which is installed on an air conditioner outdoor unit. The accumulated snow judging device comprises an accumulated snow collector which collects accumulated snow fallen on the air conditioner outdoor unit and is provided with an outlet, a heating module which is used for heating the accumulated snow collector when accumulated snow exists on the air conditioner outdoor unit, and a flow detecting module which is installed at the outlet of the accumulated snow collector and used for detecting the flow value of liquid flowing out of the outlet and judging the snow accumulation degree according to the flow value. The invention further discloses the air conditioner outdoor unit and a snow removal control method. Not only can whether accumulated snow exists or not be judged, but also the snow accumulation degree on the air conditioner outdoor unit can be judged. In addition, through the snow accumulation degree judged by the accumulated snow judging device, an outdoor fan is controlled to run at different rotating speeds so that the outdoor fan can remove accumulated snow on the air conditioner outdoor unit, and therefore the energy wasted for snow removal conducted when no snow exists is avoided, and the snow removal efficiency is improved.

The invention discloses a method for rendering a large-scale realistic snowscape in real time on a stream processor. According to the method, a snowflake model, a motion model of the snowflake model in the snowfall process, a random wind model generated through Perlin noise, and a snow accumulating and melting model are involved. The method is characterized in that the movement speed of wind is divided into average wind speed and random wind speed, calculation of a wind field is simplified, calculation results of the random wind speed are stored in 3D textures, a particle system based on a CPU is set up, and the 3D textures are used, so that the calculation loads of the particle system are reduced, and the rendering efficiency of the particle system is improved. The reality sense of the visual effect and the rendering efficiency are taken as the main research object, and the rendering method has the advantages of being high in speed, high in simulation degree and good in platform compatibility.

The invention discloses an intelligent bridge floor snow melting and deicing system utilizing shallow geothermal energy. The intelligent bridge floor snow melting and deicing system includes an underground heat collecting system, a bridge floor cooling system, a ground source heat pump, a pavement condition detector and a PLC control system, the underground heat collecting system is a circulation loop formed by horizontal and vertical buried tubes, the bridge floor cooling system is a circulation loop formed by a heat conveying tube, a cooling tube and a refluxing tube, and the pavement condition detector is embedded in the surface layer of a bridge floor and is connected with the PLC control system. The underground heat collecting system is connected with the bridge floor cooling system through the ground source heat pump. The pavement condition detector can acquire the weather information of the bridge floor in real time and deliver a result to the PLC control system, and the system judges whether snow or ice exists on the bridge floor or not. If the snow and ice exist, the ground source heat pump is started to run, and the bridge floor is heated through heat exchange to automatically remove the ice and snow on the bridge floor; and if no snow or ice exists, the ground source heat pump is automatically turned off. The intelligent bridge floor snow melting and deicing system has the advantages of high efficiency intelligence, energy saving, environmental protection, high geothermal utilization rate and wide application prospect.

The invention relates to a conductive concrete de-icing system for melting ice and removing snow by combining conductive concrete and a conductive heating device. The conductive concrete materials is made of a plurality of conductive materials such as cement, aggregate, water, metal fiber, metal particles, and the like; an ice-melting and snow-removing system is formed by the supply of electric power and the connection of a control system. The conductive concrete has the advantages of good conductivity, high mechanical strength, convenient preparation and use, no environmental pollution, and forming an integral part with structure, and the like, therefore, the conductive concrete is an advanced and practical material. As the conductive concrete system is laid on the road surface, namely, under the condition that the icing and snow are on the road surface, the current is supplied to heat the conductive concrete as well as quickly and effectively melts the icing and snow on the road surface. The system is economical and practical, and can effectively prolong the service life of roads and bridges in cold areas.

The invention discloses a car body for preventing snow accumulation and icing of a bogie, comprising a bogie under the car body, a first-stage air deflector is arranged in front of the bogie along therunning direction of the car body, and the first-stage air deflector is installed on the bottom plate of the car body; The primary air guide plate is provided with a fixed mounting surface for mounting and a air guide surface for guiding the wind and snow flow at the bottom of the vehicle body to the lower part of the bogie, the virtual plane of the air guide surface extends downward below the bottom of the wheels of the bogie, and the secondary air guide plate is cooperatively provided on the bogie. The primary air guide plate is provided with a fixed mounting surface for mounting and guiding the snow flow at the bottom of the vehicle body to the lower part of the bogie. The device can effectively guide the air flow trend at the bottom of the train, Reduce snow intake in the bogie area,The motion height of snow flakes in bogie area is controlled to weaken the scouring effect of snow flakes on the bottom equipment of train bogie, so as to avoid snow accumulation on train bogie in operation, to ensure that the dynamic performance of bogie will not be deteriorated due to snow accumulation, and to improve the safety and transportation efficiency of high-speed train in snow-rich weather.

An ice buildup inhibitor is disclosed useful for preventing ice damming, in particular in conjunction with the use of a closed gutter. Heat escape through a roof made warm snow pack, causing it to melt and flow down toward the gutter. After moving away from the heated roof, the water may re-freeze and form an ice dam. In the ice buildup inhibitor may be configured to warm in the closed gutter, thereby preventing the formation of an ice dam. They ice buildup inhibitor may be configured to be easily installed onto an existing closed gutter, enabling responsive installation on only those homes experiencing ice damming.