279results about How to "The method is simple and feasible" patented technology

The invention discloses an infrared radiation precise temperature measuring method. The infrared radiation precise temperature measuring method comprises the following steps that: Step 1: ambient reflection temperature Tu is measured; step 2: ambient atmospheric temperature T alpha is measured through using a thermometer, and atmospheric transmittance tau alpha is calculated according to the distance between a measured object and infrared radiation temperature measuring equipment; step 3: the radiation temperature Tr of the measured object is measured through using the infrared radiation temperature measuring equipment; step 4: the emissivity epsilon n and the reflectivity Rho n of the measured object as well as the sum alpha of the emissivity and the reflectivity are determined, wherein the alpha <= 1; step 5: measurement values of T alpha, Tu and Tr are input to the infrared radiation temperature measuring equipment, such that the value I (T alpha) of an ambient atmospheric temperature signal, the value I (Tu) of an ambient reflection temperature signal and the value I (Tr) of a radiation temperature signal of the measured object are calculated, and the values are substituted into an actual object infrared temperature measuring formula which is mentioned in the description, such that the value I (T0) of the infrared radiation temperature measuring signal is calculated; and step 6: according to the calibration formula of a thermal infrared imager, conversion calculation is performed so as to obtain the authentic temperature T0 from the value I (T0) of the infrared radiation temperature measuring signal.

The invention provides a method for evaluating the health state of a transformer based on vibration signal characteristics of multiple measuring points. The method evaluates the health state of the transformer by selecting vibration signal frequency complexity, vibration signal frequency spectrum energy percentage, and vibration signal certainty as characteristic quantity, and comprises steps of: firstly, analyzing the certainty of the vibration time-domain signal of each measuring point, determining whether the vibration signal is periodical, and preliminary evaluating the health state of each measuring point of the transformer; then analyzing the frequency-domain signal characteristic of each measuring point, selecting the frequency complexity and the vibration signal frequency spectrum energy percentage as characteristic indexes, wherein the greater the frequency complexity is, the more complex the vibration signal frequency components are, and the greater the high-band frequency spectrum energy percentage is, the more the radio-frequency components are; and finally, evaluating the health state of the transformer according to the time-domain and frequency-domain characteristics of the vibration signal.

The invention discloses an efficient cuttage method capable of increasing the survival rate of crape myrtle. The method comprises the following steps: selecting a piece of field having the characteristics of flat terrain, convenience in road passage, irrigation and drainage, and looseness and fertility of soil along with water conservation and fertilizer conservation for serving as a piece of cuttage field; covering the cuttage field with a layer of sandy soil with the thickness of 3-10 centimeters for serving as a cuttage substrate; selecting a Y-shaped branch of over 2 years for serving as a cuttage branch, cutting at 0.2-1 centimeter away from the juncture of three branches at the bottom, leaving a longer major branch in the middle of the upper part, and cutting two secondary branches on both sides; inserting the Y-shaped cuttage branch into the cuttage substrate, inserting the two secondary branches on both sides into the cuttage substrate, leaving the major branch on the upper part, controlling the temperature at 15-25 DEG C during cuttage and keeping the moisture of the cuttage substrate at 15-25 percent; after germination, trimming the branches, and only keeping the major branch; not fertilizing from cuttage to germination, keeping the soil moisture at 15-25 percent, and keeping the temperature at 15-25 DEG C; during 7-15 days after germination, applying 500 kilograms of farmyard manure per mu, and performing management according to the conventional management method at subsequent growing periods.

The invention discloses a heat resistance and salt tolerance polymer filtrate reducer. The heat resistance and salt tolerance polymer filtrate reducer is prepared from 1% to 3% of sodium carboxymethylcellulose, 5% to 12% of 2-acrylamide-2-methyl propane sulfonic acid, 10% to 40% of sodium acrylate, 0.2% to 0.5% of initiator and 0.01% to 0.03% of cross-linking agent in percentages by weight in an aqueous solution, wherein the initiator is ammonium persulfate or potassium peroxodisulfate; and the cross-linking agent is N,N-methylene bisacrylamide. The heat resistance and salt tolerance polymer filtrate reducer is good in heat stability, low in cost and high in heat resistance and salt tolerance capacity. The invention also discloses a preparation method of the heat resistance and salt tolerance polymer filtrate reducer adopting a graft copolymerization method in the aqueous solution; and the method is simple, convenient and practicable, the preparation reaction temperature does not exceed 80 DEG C, and the condition is mild and controllable.

The invention discloses a method for representing and diagnosing combustion instability, which is mainly applied to real-time monitoring, process and safety control technology of combustion equipment, such as a power station boiler, an industrial boiler and the like related to the combustion instability. The method comprises the following steps of: (1) acquiring a real-time pattern by utilizing a color CCD camera and an image acquisition card; (2) performing gray processing on the real-time pattern through digital image processing; and (3) extracting a sparse sample of a nonlinear time sequence of the pretreated flame real-time pattern. The detected result is acquired by a method for judging chaos 0-1 Test of a nonlinear power system so as to judge the combustion instability. The method is used for detecting the flame instability of any combustion equipment, is simple and practicable, can nimbly, rapidly and reliably detect the combustion situation in a combustion chamber in real time, provides a reliable and practical method for diagnosing the combustion instability of the combustion equipment, such as the power station boiler, the industrial boiler and the like.

The invention belongs to the field of analytical chemistry, and discloses a method for measuring biogenic amine in fresh chilled beef. After the beef is extracted by trichloroacetic acid and purified by a hybrid type cationic exchange solid phase extraction column, a high efficient liquid chromatography-tandem mass spectrometer method is adopted to simultaneously measure six common biogenic amines (cadaverine, tyramine, tryptamine, putrescine, histamine, phenylethyamine) in the beef. The chromatogram part adopts a chromatographic column with hydrophilic function to perform water-methyl cyanide gradient elution; and the mass spectrum part adopts an electro-spray ion source cation model, a multi-reaction monitoring model and an external standard method to perform mass spectrum quantitative analysis. The method requires only 15min analysis time, has good linearity within the scope of 0-1.0mg / L (r>0.994), 10Mug / kg of detection lower limit, 82.4%-116.7% of average recovery rate, and 5.3%-8.7% of standard deviation. The method is simple, convenient, quick and accurate to operate, and provides a convenient and quick method for the measurement of the biogenic amines in the fresh chilled beef.

The invention relates to a high-yield cultivation method for honeysuckle on saline and alkaline land. The method includes the key technical steps: selecting 'great mullein' breeds and two-year seedlings; selecting the saline and alkaline land with the salt content of 0.2%-0.3% and pH (potential of hydrogen) of 7.5-8.5; building a drainage system, plowing the land and excavating planting holes; applying 15kg of decayed farm manure and 250g of saline and alkaline land crop compound fertilizers as basic fertilizers in the holes; timely changing soil, planting the honeysuckle and covering black plastic films; reasonably performing pruning and topdressing; comprehensively preventing insect diseases; timely harvesting the honeysuckle; and the like. The honeysuckle is planted on a light saline and alkaline land parcel by the method, so that plants can normally grow and develop, saline and alkaline land resources are sufficiently used, the ecological environment of the saline and alkaline land can be improved, and the land can be improved step by step. Compared with a common planting method, the method has the advantages that the survival rate of the honeysuckle plants reaches 100%, the yield of five-year grown plant medicinal materials is increased by 86.3%, the content of chlorogenic acid and galuteolin is slightly improved and meets 2010 edition standard requirements of China Pharmacopeia, and the method is simple, practicable, easy to operate, remarkable in economic, ecological and social benefit and wide in popularization and application prospect.

The invention relates to a method for estimating the carbon load of a diesel engine exhaust particle trap. The method comprises the following steps that 1) the steady-state working condition of the diesel engine is selected, and the waste gas flow of the exhaust particle trap of the diesel engine under the working condition is determined; 2) the corresponding to front-and-back pressure drop of theDPF in the idle-load and the load-limiting state under the exhaust flow is determined; 3) according to the obtained corresponding to the pressure drop value of the DPF in the idle-load and the load-limiting state under the same exhaust flow rate, and a mathematical model for calculating the carbon load of the DPF is built; 4) the actual measured DPF front-back pressure drop is substituted into the mathematical model under the exhaust flow, the carbon load value of the current DPF is calculated; and 5) the current DPF carbon load value is compared with the DPF carbon load limit value, and whether the current diesel engine exhaust particle trap state needs to be regenerated or not is judged. According to the method, the carbon loading capacity of the particle trap can be accurately estimated, the estimation result reliability is high, and the DPF can be promoted to regenerate in time.

The invention discloses a proportional resonance control method used for a PWM converter and involving parameter optimization. According to the method, implementation steps of a proportional resonance controller in the PWM converter are generally designed, and a parameter optimization method for the proportional resonance controller including multiple resonance controllers is provided. The method can meet the control requirements of the PWM converter under the ideal power grid condition and is especially suitable for traversing operational control over the PWM converter under complex power grid working conditions such as the unbalanced power grid voltage condition and the low-level power harmonic wave including condition, and therefore the fault power grid operating capacity of equipment is improved. The parameter design / optimization method for the PR controller is simple, convenient to implement and feasible, engineering implementation is facilitated, and the method can be conveniently transferred to application occasions such as PWM rectifiers, grid-connected inverters, active power filters and double-fed wind power converters.

The invention relates to a large-scale preparation method of fish scale type I collagen peptides. The preparation method comprises the following steps: firstly, performing alkali and acid pretreatment on marine fish scales or freshwater fish scales serving as raw materials to remove impurities, and directly performing directed enzymatic hydrolysis on collagen type I in the fish scales by adopting a one-step biological enzymatic hydrolysis technology to form collagen peptides type I with relatively centralized molecular weight distribution; secondly, separating, purifying and concentrating directed enzyme liquid at the normal temperature by adopting a continuous centrifugal separation and membrane separation combined technology to obtain a fish scale type I collagen peptide solution with purity of not less than 95% and molecular weight of less than 1,000 Dalton; finally, quickly drying finished fish scale type I collagen peptides by adopting a spray-drying technology. The method is simple and feasible in overall process, efficient, energy-saving, short in production cycle and suitable for large-scale production; a fish scale type I collagen peptide product produced by adopting the method is high in purity and good in quality, and the content of peptides with molecular weight of less than 1,000 Dalton is more than 97%.

The invention provides a process for preparing organic chlorosilane, which comprises reacting hydrogen-containing chlorosilane (A) with chlorohydrocarbon (B) under normal pressure, wherein catalyst may be employed or not according to requirement, the reaction temperature is 400-700 deg. C.

The present invention discloses one kind of nanometer berberine hydrochloride emulsion. The nanometer berberine hydrochloride emulsion consists of berberine hydrochloride 0.1-2 wt%, surfactant 20-40 wt%, co-surfactant 10-20 wt%, solvent 1-10 wt%, oil phase 5-30 wt%, sweetener 1-5 wt% and distilled water 27.5-70 wt%. The nanometer berberine hydrochloride emulsion has raised berberine hydrochloride dissolubility, raised bioavailability, lowered toxic side effect, simple preparation process and low production cost.

The invention provides a method for preparing a cyclic dipeptides compound as well as an application thereof, the method is to obtain the cyclic dipeptides compound by fermenting, separating and purifying separated endophytic fungi with the Collection No. of CGMCC2094, the compound can effectively induce the system resistance of crop and obviously promote the growth of roots, stems and leaves of plants at different seedling stages, and can enhance the quality of seedlings and promote the formation of strong seedlings, and the method has advantages of convenient and feasible process, non environmental pollution, short period, low cost of materials, easy formation of large-scale batch production and low production cost.

The invention relates to a method for separating and determining rivaroxaban and impurities thereof, and application thereof, belonging to the technical field of analytical chemistry. A reagent composition used for separating and determining rivaroxaban and impurities thereof comprises a reagent A and a reagent B, where the reagent A is an inorganic salt buffer system with an acidic ion-pairing agent which has a concentration of 0.2 to 4.0 g / L, and the reagent B is an organic solvent. The method for separating and determining rivaroxaban and impurities by using the reagent composition comprises the following steps: dissolving rivaroxaban in an aqueous acetonitrile solution so as to obtain a sample solution; preparing a mobile phase; injecting the sample solution into a separation and detection system and carrying out separation and detection on the sample solution by using the mobile phase so as to obtain eluate; and allowing the eluate to enter a detector for determination. The method provided by the invention can completely separate rivaroxaban from the impurities thereof at the same time and has the advantages of simplicity, high sensitivity, short analysis time, strong specificity, good reproducibility and capacity of simultaneously and effectively separating and determining contents of relevant substances in the bulk drug and preparations of rivaroxaban.

The invention discloses a smoke denitration NO (Nitric Oxide) oxidation catalyst by catalytic oxidation, and a preparation method thereof. The NO oxidation catalyst is prepared from titanium crosslinking clay as a carrier and copper oxide and vanadium oxide as active ingredients, wherein the titanium crosslinking clay carrier is prepared by taking acetone as a dispersing agent and crosslinking and aging titanic acid butyl acetate and sodium base montmorillonite turbid liquid under an acid condition. Copper nitrate and ammonium metavanadate solutions are used as the precursors of the active ingredients, are fixed on the carrier by an immersion method, and are dried and calcined by program heating to obtain the smoke denitration catalyst by catalytic oxidation. In the catalyst, the copper capacity is 2-10%, and the vanadium capacity is 0.5-5%. The smoke denitration catalyst by catalytic oxidation has the advantages of good sulfur and water tolerance, good reproducibility and good denitration effect.

The invention provides a hydrophobic material protected by a microstructure, which comprises a substrate, at least one surface of the substrate is provided with a microstructure composed of a plurality of microstructure units, and hydrophobic fillers are arranged in gaps among the plurality of microstructure units and / or in the plurality of microstructure units. The invention further provides a preparation method and an application of the hydrophobic material protected by the microstructure. According to the invention, the hydrophobic material which is easy to damage and fall off and has poormechanical properties is protected; the hydrophobic material is prevented from bearing severe acting force such as external impact and frictional wear in the using process, the durability of the hydrophobic surface in practical application is greatly improved, and the hydrophobic material can be used for self-cleaning, antifouling, anti-corrosion, mildew-proof and anti-icing surfaces for a long time and has very high universality and practicability.

Method for producing YY super-male and XY physiological female common carps, with which YY-chromosome super-male common carp can be cultivated and androgenetic YY super-male common carp is produced, where microsatellite markers are used for paternity testing and test crossing confirmation. The YY common carp is crossed with normal female common carp to produce the progenies of only male common carp, and without sex identification, the juvenile male common carp with known sex are subjected to artificial sex reversal to produce XY physiological female common carp.

The invention provides an optical biological reaction method for purifying biogas slurry by utilizing microalgae. The optical biological reaction method for purifying the biogas slurry by utilizing the microalgae solves the problems that an optical biological reactor is less related in the existing microalgae sewage treatment process and a real-time monitoring function on data indexes is not realized. The optical biological reaction method for purifying the biogas slurry by utilizing the microalgae comprises the following steps: 1) carrying out pretreatment; 2) injecting biogas slurry into a liquid storage pot and controlling liquid amount; 3) sterilizing; 4) exhausting residual ozone; 5) adding microalgae, illuminating and introducing CO2; 6) cultivating the microalgae until density is 1.5-2.5, and completing degradation; 7) carrying out a secondary optical biological reaction or flocculation process on the discharged biogas slurry. The optical biological reaction method for purifying the biogas slurry by utilizing the microalgae has an important breakthrough in a high-efficiency biogas slurry purifying project adopting microalgae, is simple and feasible and has the advantages of low cost, simple equipment operation, reliable effect, good market generalization performance and important significance for solving the problem of biogas slurry waste water.

The invention relates to an obtaining method and a device of a gas assisted dosage in a steam assisted gravity drainage process. The method comprises the steps of: determining the oil pool thickness occupied by non-condensed gas in a steam cavity, the rock volume occupied by free non-condensed gas at the top of the steam cavity and the rock volume occupied by the free non-condensed gas and steam in the steam cavity; obtaining the amount of substances of gas dissolved in single-side cumulative oil production, the amount of substances of gas dissolved in residual oil in a single-side gas layer, the amount of substances of gas dissolved in residual oil in a single-side gas and steam cavity and the amount of substances of free gas in the single-side gas layer; and obtaining the volume of gas required to be injected under the standard condition by using the amount of substances of gas dissolved in the single-side cumulative oil production, the amount of substances of gas dissolved in residual oil in the single-side gas layer, the amount of substances of gas dissolved in residual oil in the single-side gas and steam cavity and the amount of substances of free gas in the single-side gas layer.

The invention relates to a shop people flow identification and analysis method and system. The method comprises the following steps of: enabling a server to read video streams, extracting video frames, enabling a video image processing identification module to identify a rectangular frame which tightly surrounds the contour of an identifiable object and the probability that the identifiable objectmay be a set target according to a deep neural network target identification model; recognizing key points corresponding to human skeleton points according to the deep neural network key point recognition model; calculating attributes of postures, tracks and motion status of the target person in the frame at the moment and on a certain time axis based on the relative positions of the key points and the interval time sequence relation between frames, and finally, counting and displaying the passenger flow groups capable of being identified within a certain time length to a user. The system includes components that implement the method. According to the invention, a comprehensive and three-dimensional video monitoring data and store operation management combined system is constructed, and objective, accurate and valuable in-store personnel and passenger flow monitoring analysis can be provided for owners.

The invention relates to a method for detecting internal fault of SF6 electrical equipment by using a gas chromatograph, comprising the following steps: a stainless steel tube filled with 60-80 meshes of GDX-301 stationary phase is firstly selected as a chromatographic column, then 50mL of SF6 gas sample is extracted from the SF6 electrical equipment in the field for later use; the chromatographic column is placed in the gas chromatograph, hydrogen is selected as carrier gas, and working conditions of a TCD (thermal conductivity detector) in the gas chromatograph is set; the chromatograph is demarcated; 0.5mL of gas sample is selected and the gas sample is injected into the chromatograph through an injection port of the chromatograph with the use of an injector, the computing mode of the chromatograph is selected, and then the gas sample is identified whether H2S or SO2 exists or not by the TCD after the gas sample is separated by the chromatograph and the contents of H2S and SO2 gases are automatically calculated; and the result is analyzed. The invention adopts gas-solid chromatography and has the advantages of good stability, less gas consumption, ready-for-detection and high accuracy, etc. The method is easy and feasible and has low detection cost. The invention provides simple and effective means for early detection of the internal fault of the SF6 electrical equipment and in-time elimination of hidden dangers.

The invention provides a method and a system for calculating movie expectation. The method includes: collecting comments on upcoming movies from microblogs, and marking manually to obtain training samples, using machine learning to train a maximum entropy classifier with the obtained marked samples so as to finish automatic classification of the comments on the upcoming movies, and calculating according to classification results of a movie to obtain the expectation on the movie. The invention further discloses a system for calculating the movie expectation. The method and the system are simple, practical, and time-saving and labor-saving, and calculating results of the movie expectation are real and reliable.

The invention provides a method for improving the germination rate of wild peach seeds. The method comprises the following steps: (1) intensively collecting mature fresh wild peach seeds and putting the seeds under the sun to be dried; storing the dried wild peach seeds in a fresh-keeping storehouse; (2) immersing the wild peach seeds for 10 days by using a germination accelerating solution at the day which is 10 days before seeding; fishing out the seeds and washing; then drying; (3) selecting micro-acidity soil with good water discharging property, deep soil layer and the pH (Potential of Hydrogen) of 5.5-6.5; blending a mixture of yellow sand and soil into a deeply-overturned land; sorting the land into one row with the size of 1.2m; and (4) uniformly arraying the immersed wild peach seeds on the sorted land and covering one layer of a humus layer on the arrayed wild peach seeds, wherein the thickness of the humus layer is 1-3cm; and keeping the suitable humidity of the soil to wait for the germination of the seeds. The method provided by the invention is simple and feasible; compared with a traditional seeding method, the germination rate can be up to more than 90%; the germination rate of the wild peach seeds is greatly improved, the planting cost is reduced and the economic benefits are improved.

The invention provides a system and method for observing micro-nano bubbles in a porous medium. The system comprises a model box, a laser, a camera, a lens and an image acquiring and processing module, wherein a spherical transparent resin material for simulating the porous medium is filled in the model box, the model box is provided with a water filling port for filling and containing a water body which is used for simulating underground water and is rich in micro-nano bubbles, and the surfaces of the model box are different in material and color so as to improve the imaging definition of the micro-nano bubbles in pore water of the porous medium to the maximum extent; the laser is positioned on the top of the model box and used for providing a light sheet required for observation; the camera and the lens are positioned on one side of the model box and used for observing the micro-nano bubbles in the porous medium; and the image acquiring and processing module is connected with the camera and used for acquiring and processing images. The system has the advantages of easiness, practicability, high simulation degree and high observation precision.

The invention discloses a high-temperature tensile rate setting method. According to the invention, the tensile rates of a linear elastic section, an elastic-plastic section, a yield section, and a yield rear section are sequentially set to be 0.005 / min, 0.005 / min, 0.005 / min and 0.15 / min by adopting cross beam displacement control for stretching, a force-extension graph is drawn, the time t1 from starting of a test to elastic limit and the time t2 from starting of the test to the end of the yield section are found out, t2 / 3min is set to be n, t1:t2 is set to be n1:n2, then the cross beam displacement rate of the linear elastic section of a next sample is set to be 0.005*n*2 / n2*n1 and the cross beam displacement rates of the elastic-plastic section and the yield section are set to be 0.005*n*2 / n2*(n2-n1). Stretching is carried out according to the set tensile rate, t1 and t2 are found out on the graph, and if t2 is equal to 2-4min and t1 is equal to 1-3min, the setting of the test rate is complete; if not, correction is carried out. With the adoption of the method disclosed by the invention, a uniform sample deformation rate can be set for different tensile test systems, so that data tested by different testing machines has comparability, therefore, high accuracy and reliability of high-temperature test data can be guaranteed.

The invention relates to a preparation method of a polyether sulfone functional composite separating membrane. The preparation method mainly comprises the following steps: performing chloroacetylating modification treatment on polyether sulfone, wherein the surface of polyether sulfone carries a chloracetyl group; then performing a chemical bonding reaction on polyether sulfone carrying the chloracetyl group and tetraethylenepentamine in a N,N-dimethylacetamide solvent; further preparing a polyether sulfone separating membrane carrying the chloracetyl group by applying a phase transfer technology; then performing phosphorylating modification treatment on the polyether sulfone separating membrane carrying the chloracetyl group to prepare the polyether sulfone separating membrane carrying an amino phosphonic acid functional group; and finally, coating a nanofiltration intercepting thin layer on the surface of the polyether sulfone separating membrane by means of an interfacial polymerization reaction. The preparation method provided by the invention is simple and feasible, the preparation process is small in damage on health, and the nanofiltration intercepting layer on the surface of the prepared polyether sulfone functional composite separating membrane and the amino phosphonic acid chelating group inside are stable, are unlikely to fall and leach and run off, and the polyether sulfone functional composite separating membrane is high in intercepting efficiency of heavy metals, and has a wide application prospect in the field of heavy metal wastewater pollution treatment.

The invention relates to a pilose antler deep processing method. The method takes traditional health-care tonic deer as a raw material, a preparation method of a pilose antler composition, which takes a desclerotized pilose antler extract product liposome and a pilose antler ossification object as main components, is established. Compared with the traditional pilose antler, the prepared pilose antler composition keeps original efficacy of pilose antler and provides novel function for pilose antler, the problem that the pilose antler can be degraded as possible by digesting enzyme during an administration process can be solved, and the method has wide application prospect.

The invention discloses a determination method for pervious cement concrete closed porosity. The bulk density of a test piece is measured by a test method and maximum theoretical relative density of a concrete sample is measured, then the voidage of the test piece can be calculated. Then a connected porosity of the test piece is acquired by a test method, and calculation is carried out to obtain the closed porosity of the test piece. The test piece used by the method provided by the invention can be an irregularly shaped test piece, and breaks the constraint that only regular standard test pieces can be used in previous tests. The method provided by the invention fills the blank of determination method for pervious cement concrete closed porosity, and lays the foundation for future development of closed porosity related subjects.

The invention discloses an intelligent power-saving method and an intelligent power-saving device for a lift. The intelligent power-saving method for the lift comprises the following steps: according to the set turn-off time, judging whether the lift is in a standby state based on the intelligent judgment and control technology by detecting the change of current of a main circuit of the lift; and triggering an executing mechanism to switch off the current of the main circuit of the lift after certain time of the standby state of the lift is prolonged so as to realize the function of intelligently switching off a power supply when the lift is in the standby state. The intelligent power-saving device for the lift comprises a main detection module, an intelligent judgment and control module, an executing mechanism module and a man-machine interaction. The intelligent power-saving device for the lift has the characteristics of high degree of safety, simple implementation, obvious energy-saving effect, high reliability, intelligence, long service life and the like.

The invention relates to a self-organized sand pile model-based crowd evacuation simulation method. A crowd panic spread-oriented dynamic three-dimensional self-organized sand pile model is established to perform simulation so as to obtain the stability of crowd evacuation. The method comprises the following steps of 1) mapping an evacuated individual into a sand particle and establishing the crowd panic spread-oriented dynamic three-dimensional self-organized sand pile model; 2) determining a crowd instability burst critical probability according to a sand avalanche scale; 3) solving a current crowd instability average probability of the established dynamic three-dimensional self-organized sand pile model, comparing the current crowd instability average probability with the crowd instability burst critical probability determined in the step 2), and judging a state of the dynamic three-dimensional self-organized sand pile model; and 4) performing crowd evacuation simulation verification by utilizing the established dynamic three-dimensional self-organized sand pile model by utilizing a crowd evacuation simulation software. Compared with the prior art, the method has the advantages of comprehensive consideration factors, high accuracy, possession of scientific bases, high reliability and the like.