30results about How to "Natural disaster reduction" patented technology

The invention discloses a fiber bragg grating (FBG) testing device and a testing method for rock three-dimensional stress state. The testing device comprises a data processing module consisting of an FBG network demodulator and a computer, three FBG sensors and a substrate for mounting the FBG sensors; the substrate can be deformed with the deformation of rocks; the three FBG sensors are respectively fixed in three-dimensional directions on the surface of the substrate; and the signal output ends of the three FBG sensors are connected with the signal input ends of the FBG network demodulator. The invention can measure the deformation amount of microstrain, so responses can be made in time before rock masses are damaged; the high-precision measurement of three-dimensional stress in rocks can be realized, so that the long-term and effective monitoring for large project rock masses can be realized, and disasters are prevented.

The invention discloses a lightning early warning system based on lightning monitoring devices arranged in a distributed mode. The lightning early warning system comprises a background server or a cloud server, the lightening monitoring devices and a communication module, wherein the lightning monitoring devices are arranged in a region in the distributed mode, and each lightning monitoring device transmits lightning monitoring data to the background server or the cloud server through the communication module. The background server or the cloud server stores and analyzes the lightning monitoring data and generates lightning early warning information. The invention further discloses a lightning early warning method based on the lightning monitoring devices arranged in the distributed mode. By means of the lightning early warning method and system, accurate forecasting can be achieved for the local thunder cloud expected direction and the possible thunderstorm occurrence time, the rate of false forecast and the rate of missing forecast are effectively decreased, the background server or the cloud server of the early warning system can be further checked and modified, and furthermore, the lightning early warning and forecasting accuracy is unceasingly perfected and improved.

The invention relates to a rain collection self-pressure irrigation system for loess plateau hilly area step greenhouses, which comprises greenhouses, ground water collection surfaces, water collection flow gathering ditches, water reservoirs and irrigation pipelines, wherein the greenhouses are arranged on the steps of a terraced field, the ground water collection surfaces, the water collection flow gathering ditches, the water reservoirs and the irrigation pipelines are arranged on the steps, the greenhouses comprise greenhouse ceiling water collection surfaces, the water collection flow gathering ditches are arranged along the lower edges of the greenhouse ceiling water collection surfaces, the ground water collection surfaces are in inclined arrangement, the lower sides of the ground water collection surfaces are connected with the collection flow gathering ditches, one sides or two sides of the water collection flow gathering ditches are provided with the water reservoirs, and the irrigation pipelines are arranged in the greenhouses and are connected with the water reservoirs of the previous steps through main pipelines. The greenhouses are built on the terraced field, the collected rain at the previous step of the terraced field is used for irrigating the greenhouse on the next step of the terraced field, the rain resources are sufficiently and reasonably developed and utilized for developing the facility agriculture, and the ecological system is prompted to be converted to the benign circulation.

The invention relates to a thunder and lightening prewarning system with a honeycomb layout, and the system mainly solves the problem of prewarning precision in the prior art. According to the thunder and lightening prewarning system with the honeycomb layout, single-point thunder and lightening prewarning devices are networked according to the honeycomb layout to perform data integration; the thunder and lightening prewarning system with the honeycomb layout comprises at least three single-point thunder and lightening prewarning devices, a background server and a client terminal; the single-point thunder and lightening prewarning devices are provided with sensors which can monitor physical parameters of the atmospheric electric field value size, direction and change rate within a certain area range and physical parameters of light, electricity, magnetism and sound when thunder and lightening occur and wireless and wire communication function modules. The thunder and lightening prewarning system with the honeycomb layout better solves the problem and can be applied to thunder and lightening prewarning.

The invention discloses a cultivation method for increasing the yield of Gaza sugar oranges. The method comprises the steps of variety selection, land management, field planting, plant management and disease and pest prevention and cure. According to plant management, plant growth modifier liquid added with water is sprayed before the flower bud differentiation period and during the flower falling period and the fruit expansion period, differentiation of flower buds of the Gaza sugar oranges is promoted during the flower bud differentiation period, flower forming genes are induced, the number of female flowers is effectively increased, stigmas and male flowers are protected, repression is removed, self-pollination or cross-pollination and fertilization are promoted, proline synthesis in crop bodies can be improved, protein denaturation caused by plant cells under the low-temperature and high-temperature states can be avoided, the flowers setting the Gaza sugar oranges are effectively protected from cold injury, and can set fruits normally, and the fruits can be effectively prevented from being scorched by the sun, cracking or shrinking; fruit expansion is accelerated, the fruit shape is lengthened, the effect is remarkable, and the yield of the Gaza sugar oranges is increased.

The invention discloses an LED light source capable of promoting growth and increasing a yield of plant. The LED light source comprises an LED light source body which consists of 18*P LED lamp beads, wherein P is greater than or equal to 1; the LED lamp beads consist of 4*P blue-light LED lamp beads with wavelength of 450 nm-470 nm, 2*P green-light LED lamp beads with wavelength of 515 nm-535 nm, 2*P yellow-light LED lamp beads with wavelength of 580 nm-600 nm, 6*P red-light LED lamp beads with wavelength of 620 nm-640 nm, and 4*P dark-red LED lamp beads with wavelength of 650 nm-670 nm. The LED light source disclosed by the invention is used for prompting growth irradiation of crops, scientific research of crop growth and the like.

The invention discloses an LED light source for accelerating plant growth and increasing yield. The LED light source comprises an LED light source body; the LED light source body consists of 18*P LED beads, P not not smaller than 1; and the LED beads consist of 2*P blue-light LED beads with wavelengths of 450-470 nm, 5*P red-light LED beads with wavelengths of 620-640 nm, 6*P deep-red-light LED beads with wavelengths of 650-670 nm, 1*P peach-light LED beads with wavelengths of 720-740 nm and 4*P white-light LED beads with color temperatures of 2900-3200 K. The LED light source is used for such places as crop growth light compensation for photosynthesis and growth acceleration.

The invention relates to an optimization method of efficient flood preventing power generation in a hydropower station. The method comprises the steps of: dividing the lower course of a river into an upstream part and a downstream part; when a big flood flows through, cutting down the out-reservoir flood peak by adequately using the capacity of the reservoir between a normal water level and a permitted highest flood level; when the flood flows to the downstream for flood detention for 4-5 days, dividing the flood in the upstream and downstream into two parts by the result of flood detention, wherein the original independent flood peak is evolved to a two-peak state which is reduced by half, the water level is reduced much compared with that of the single peak, flood damage of the downstream is reduced, and meanwhile the blood in the flooding process flows to the downstream in the form of generating flow to form a non-flood state. Flood risks are not available in midstream and downstream. The flood control level administrative command can be cancelled, thereby, not only can the natural calamity of flood be reduced, but also blood is adequately used to increase the electric energy production.

The invention relates to a wind power stable generating system which comprises an energy collecting unit, an energy converging and outputting system and a water turbine generating unit. Energy of unstable power sources is collected by the energy collecting unit and converted into energy which can linearly and reciprocally move. The energy converging and outputting system converts the energy which can linearly and reciprocally move into liquid energy with certain pressure and drives the water turbine generating unit to generate power. The energy collecting unit is connected with the energy converging and outputting system which is connected with the water turbine power generating unit. The energy collecting unit comprises a wind power collecting unit. The wind power stable generating system can significantly simplify manufacture technology of the wind power generating system, and is suitable for variation of wind speeds and capable of fully collecting energy in a bearing range of structural strength of a vane. The water turbine power generating unit in wind power stable generating system can fundamentally solve the problem of low voltage ride-through of a power grid of a tradition wind power generating system.

The invention discloses a nutrient soil and application of the soil in sand control and greening. The raw material composition of the nutrient soil comprises: 70-80 parts by weight of advanced anaerobic digestion sludge, 5-15 parts by weight of sludge-based biochar soil, 2-5 parts by weight of carbonized sludge, 2.5-5 parts by weight of potassium fulvic acid, and 5-10 parts by weight of polyacrylamide. According to the present invention, sandy soil nutrient, soil bacterial community diversity, species richness and species composition uniformity are improved, the sandy soil nutrient grade is upgraded from the original level 6 to more than level 2; compared with the original soil, the total amount of nitrogen, phosphorus and potassium in the soil increases by 97.08%, the organic content increases by 119.86%, the water content increases by 65.22%, the quality of sandy soil is significantly improved, and the capacity of soil fertility and water retention are greatly improved; and after the application of the nutrient soil of the invention, the heavy metal pollution degree and potential pollution risk of the soil are both low, and the soil is in a safe state.

The invention discloses an artificial channel drainage sandbeach sedimentation reducing system, and belongs to the technical field of coastal wetland ecological restoration. The artificial channel drainage sandbeach sedimentation reducing system is arranged on the silt beach side of an open sea and comprises a water injection ditch, a drainage passageway, outer walls and a water injection system.The water injection ditch is arranged on the rear land of the silt beach, the water injection system and the water injection ditch cooperate with each other, water is injected into the water injectionditch all the time, the outer walls are arranged on the two sides of the water injection ditch, water in the water injection ditch is drained to sandbeaches on the two sides through the drainage passageway; fine-particle mud in the drainage passageway is started under the action of water flow and moves, the mud is output along with offshore flow in a tide falling period, and sandbeach argillization is avoided. According to the artificial channel drainage sandbeach sedimentation reducing system, the ditch is artificially excavated, and the function of waves and tide is effectively adjusted toreduce natural hazards. Pollution can be effectively degraded through coast wetland restoration, and the primary ecological system and natural balancing mechanism are restored; and by means of ecological restoration, the diversity of the species is improved. A good basis is provided for further construction of leisure tourism inhabiting facilities, and a basis is provided for tourism development.

The invention discloses a gravitational potential energy converting device. A water pump is used for outputting power water and connected with a P port of a hydraulic control two-position four-way valve which is connected with a conversion pump, wherein both end parts of an inner cavity of a valve body of the two-position four-way valve are respectively provided with a hydraulic control port, and quick-trip valves are respectively positioned in the hydraulic control ports; a pump body of the conversion pump is internally provided with negative feedback grooves which are communicated with an upper piston cavity and a lower piston cavity respectively; the negative feedback grooves are communicated with the hydraulic control ports; the upper piston and the lower piston are provided with lug bosses corresponding to the negative feedback grooves; and the conversion pump adopts a rod pressing pump or a rod pulling pump or a pressing and pulling pump structure. The device has compact structure, low cost and high liquid pumping efficiency, is not influenced by the climate and geographical positions, utilizes the gravitational potential energy to carry out the medium conversion to pump liquid of deep stratums and can pump groundwater, crude oil, alkali, acid, salts and combustible ice of the deep stratums.

The invention discloses a method for synthesizing a hydrocarbon from carbon dioxide and water by simulating photosynthesis of green plants. The hydrocarbon comprises the following components in percentage by weight: 0.01-10 percent of nitrogen-containing compound or nitrogen-containing compound and acid compound in the molar ratio 1:1 or amino acid amphoteric compound and the balance of water. The method comprises the following steps of: transforming the compound(s) into an ammonium oxide compound by means of the chemical properties of the compound(s) in an aqueous solution; performing chemical treatment with mixed gas of CO and CO2 to transform ammonium oxide into an ammonium ion compound; undergoing a hydrolysis reaction on ammonium ions and water to form 'photolysis water'; and introducing carbon dioxide, reacting the carbon dioxide with the 'photolysis water', and undergoing a complex chain reaction in a carbon dioxide reducing reaction system to obtain the hydrocarbon serving as a final target product, wherein an alcohol compound with 3-8 carbon atoms is mainly obtained. According to the method, the problem of carbon emission is fundamentally solved; and meanwhile, cyclic application (combustion) of carbon in the industrial sphere is realized, the original carbon cycle is greatly shortened, and the situation of gradual depletion of fossil fuels can be relieved.

The invention discloses a photovoltaic power generation apparatus and a method, which comprises a base, a bracket arranged on the base, a solar panel arranged on the bracket, a horizontally extendingairbag arranged on the base, and a pressing plate arranged on the airbag. A storage box is arranged on the front part of the pressing plate; and a solar panel cover is arranged in the storage box; oneend of the solar panel cover is connected to a reel arranged on the bracket through a rope; the reel is connected to a motor; the other end of the solar panel cover is fixedly connected to the bottomof the storage box; a plurality of balancing weights are arranged on the lower part of the two side edges of the solar panel cover. The photovoltaic power generation apparatus further comprises a controller, and the controller is electrically connected to the motor. The photovoltaic power generation apparatus and the method has the advantages that the safety is good; the self-adaptive capacity ishigh; the influence of natural disasters is effectively reduced; and can be automatically cleaned to ensure the stable of power generation performance of the solar panel.