290 results about "Radiation effect" patented technology

The invention discloses a heat effect and stripe noise synchronous progressive correction method based on an RBF curved surface. The method comprises the following steps: acquiring a degraded image; performing gray processing on the degraded image to obtain a gray degraded image; performing guided filtering processing on the gray scale degraded image to obtain a filtered thermal radiation effect estimation image; constructing an RBF kernel matrix according to the thermal radiation effect estimation image and the RBF kernel function, and solving a weight coefficient in combination with a pixel gray vector of the thermal radiation effect estimation image; multiplying the solved weight coefficient by the RBF kernel matrix to generate an RBF thermal radiation effect curved surface; estimating stripe noise through a stripe operator based on the degraded image and the RBF thermal radiation effect curved surface; according to the RBF thermal radiation effect curved surface and the stripe noise, a potential clear image is restored through a synchronous progressive correction optimization algorithm. According to the invention, the thermal radiation effect and possibly accompanied stripe noise of the image can be simply and efficiently removed.

The invention discloses a polar cloud mask quality inspection and correction method and device, and compared with the prior art, the method carries out the standardized grid projection of active and passive remote sensor data, and carries out the consistency evaluation of the data quality as the weight. Cloud mask quality inspection and correction between different active and passive remote sensing sensors are realized, the limitation that time-space matching needs to be performed one by one in traditional satellite remote sensing data fusion is broken, and a reliable cloud mask detection result is identified by using high precision of a laser radar and consistency of multiple passive satellites. And then the result is transmitted to radiation data for correction, so that the result is not influenced by different parameters among different satellite sensors, flexible adjustment can be performed according to output requirements of different data sources, spatial resolution and the like, and more comprehensive data support is provided for polar cloud mask product optimization. The method is helpful for improving cognition on scientific problems such as polar cloud radiation effect and polar climate change, and has important scientific research and application values.

The invention relates to a radiation hardening band-gap reference current source circuit, and belongs to the technical field of radiation resistance of integrated circuits. Over-degradation of the threshold in a high total dose environment is focused on a circuit design level, closed-loop adjustment of the threshold voltage is realized through total dose detection and a dynamic compensation mechanism, and reliability and stability of the circuit in the high dose radiation environment are remarkably improved. Through the embedded logic of the reinforced circuit, the anti-radiation performance of the reinforced circuit is ensured, and the reinforced circuit can work normally in a high-dose environment. Reliable triggering and system self-recovery in a full dose range can be realized through a bias closed-loop design provided by a reference circuit for a reinforced loop, and the application requirements of extreme environments such as spaceflight and nuclear energy are met. The method has the advantages of anti-radiation effect, good dynamic nature, strong transportability and the like.

The invention discloses a snakelike slow wave plate which comprises a waveguide radiation body, a snakelike slow wave groove is formed in the front end face of the waveguide radiation body, and a feed signal end is arranged at one end of the snakelike slow wave groove. A snakelike channel is formed in the snakelike slow wave slot, the snakelike channel is connected with the feed signal end, the snakelike channel comprises a plurality of linear waveguide sections and connecting waveguide sections, a gap part is reserved between every two adjacent linear waveguide sections, and every two adjacent linear waveguide sections are connected through the corresponding connecting waveguide section; waveguide radiation slots are arranged at intervals in the plurality of linear waveguide sections or the waveguide radiation slots are respectively arranged in the plurality of linear waveguide sections, and the central lines of the linear waveguide sections and the central lines of the corresponding waveguide radiation slots are arranged in a staggered manner; and the center lines of the plurality of waveguide radiation slots have different offsets. The antenna has the advantages of simple structure, low cost, good radiation effect, wide application range and the like.

The invention belongs to the technical field of radiation effect and radiation hardening of semiconductor devices and integrated circuits, and particularly relates to a single event effect laser simulation system based on Bessel beam shaping. A Bessel beam shaping and focusing module based on an axon lens is introduced and composed of the axon lens and two lenses, namely a single lens and a focusing lens, a Gaussian beam of an incident beam is shaped into a quasi-Bessel beam, and the quasi-Bessel beam is utilized to irradiate a semiconductor device to be detected. The axial distribution of the light beam is kept unchanged in a range of hundreds of microns, and the focusing breaking through the diffraction limit is realized in the radial distribution, so that the effect closer to the heavy ion charge deposition track is generated. The technology can solve the problem that a multilayer structure device, a thick sensitive region device and a wide forbidden band device are difficult to test through traditional laser simulation, and has important practical value for promoting laser simulation of the single event effect.

The invention discloses a simulation analysis method for single-particle electric leakage of a wide bandgap semiconductor device, and the method comprises the steps: constructing a geometric model of a to-be-simulated power device, calculating the vacancy defect density of the power device, carrying out the two-dimensional modeling and grid division, building an electrical model of the power device, and fitting an electrical curve of the power device; then, a collision ionization model after high-energy particle incidence is introduced, mobility and electric leakage degradation parameters are optimized, and an electric leakage degradation model corresponding to the power device is established; and finally, carrying out damage mechanism analysis, extracting the change of microscopic physical parameters of the power device along with time by changing influence parameters in the radiation process, and carrying out reinforcement and optimization on the power device. According to the method, the physical processes of different particle radiation devices can be accurately simulated, different microscopic physical parameters in the electric leakage process of the wide bandgap semiconductor device are extracted, and a technical basis is provided for radiation effect mechanism analysis and reliability evaluation of the wide bandgap semiconductor device by establishing different electric leakage models.

The invention provides a transformer substation secondary equipment soft error fault simulation injection method and system, and belongs to the field of power system automation, and the method comprises the steps: carrying out chip particle effect modeling and simulation testing based on the Monte Carlo principle, carrying out the simulation analysis of the influence of particle radiation on a chip storage part, and obtaining a simulation result; soft error fault injection is carried out by changing data values of different memory units in combination with characteristics and rules of particle radiation effect analogue simulation, so that abnormal distribution, fault types and related statistical information of bottom-layer memory units are obtained, and behavior performance of secondary equipment during data displacement of different units of the memory is obtained; and carrying out influence analysis on failure waves and a fault range. The method can quickly, economically and effectively verify the function and performance of the secondary equipment under the condition of abnormal data displacement, scientifically assesses the actual harmfulness of the memory data fault of the secondary equipment of the transformer substation, and improves the safety and reliability of the secondary equipment of the transformer substation in actual application.

The invention relates to the technical field of building thermotechnical testing, solves the technical problem that in the prior art, due to the fact that an experimental environment lacks the sky background radiation cold effect, the accuracy of enclosure structure performance testing is low, and provides an enclosure structure performance testing method and system coupled with the sky cold and hot radiation effect. The method comprises the following steps: establishing an equivalent sky effective temperature control model according to a meteorological database; acquiring test environment parameters through a test environment parameter control module according to the equivalent sky effective temperature control model; acquiring real-time test data of the enclosure structure test piece under the control of the test environment parameters through a test data acquisition module according to the test environment parameters; and analyzing the real-time test data through a test data analysis module to obtain a test result. The controllable equivalent sky effective temperature model is introduced, and the problems that in the prior art, the sky background radiation cold effect is lacked, and the deviation between the test result and the actual building service environment is large are effectively solved.

The invention provides RU.521-EVs anti-radiation nanogel as well as a preparation method and application of the RU.521-EVs anti-radiation nanogel. The RU.521-EVs anti-radiation nanogel is a nanogel obtained by loading microalgae-derived extracellular vesicles and a small molecule compound RU.521 on chitosan nanoparticles formed by cross-linking chitosan, and the extracellular vesicles and the small molecule compound RU.521 are derived from microalgae. The RU.521-EVs anti-radiation nanogel has higher adhesion and permeability in the lung and effectively releases RU.521 and EVs, the RU.521 and EVs can synergistically play anti-inflammatory and anti-oxidation roles, local anti-oxidation and anti-inflammatory defense reactions of the lung are effectively started, the excellent anti-radiation effect is shown, and the RU.521-EVs anti-radiation nanogel can be used for preventing and treating radiation-induced lung injury.

The invention provides a strong electromagnetic pulse radiation effect equivalent test method under a transmitting port matching condition, and the method comprises the steps: carrying out the irradiation through employing a high-power electromagnetic pulse source under a first preset field intensity, and recording a first response signal of a target cable; stopping irradiation, clamping a current injection probe on the target cable, and connecting the target cable with a signal source; performing Fourier transform on the first response signal to obtain a frequency domain signal, and determining a target pulse signal according to the frequency domain signal; adjusting the injection voltage of the current injection probe according to the target pulse signal, and monitoring a second response signal of the target cable; and performing a high-field-intensity extrapolation test according to the second response signal to complete the electromagnetic radiation effect test process. According to the invention, the equivalent difference mode response of each line to the terminal in the tested end under the irradiation and injection conditions is taken as an equivalent basis, and the equivalent pulse during injection is calculated by using the response of the irradiation test, so that the strong electromagnetic pulse radiation effect equivalent test based on the large current injection technology is completed.

The invention relates to the technical field of laser manufacturing and intelligent manufacturing, in particular to a residual stress and deformation prediction method for a laser directional energy deposition TA15 alloy component, and the method comprises the following steps: constructing a thermal-metallurgical-mechanical multi-physics field coupling model; firstly, a transient temperature field model comprehensively considering heat conduction, convection and radiation effects in the laser directional energy deposition process is established based on the Fourier heat conduction theory; then, a metallurgical model is established based on the phase change principle, finally, a multi-stage phase change kinetic model is established, and diffusion control type and non-diffusion type transformation mechanisms are considered at the same time; a phase change kinetic model is introduced into a sequentially coupled thermal-mechanical framework, so that multi-scale integrated prediction from microstructure evolution to macroscopic stress distribution is realized; and a theoretical basis is provided for microstructure regulation and control and residual stress optimization of the TA15 alloy LDED process.

The invention relates to the technical field of microwave probes, in particular to a novel microwave probe, and aims to solve the problem that a test result has a large error due to radiation of a radio frequency probe based on a coplanar waveguide signal transmission principle, the novel microwave probe comprises a cable, the end part of the cable is provided with a signal pin and a wrapping ground pin, the signal pin is fixed on a conductor in the center of the cable, the wrapping ground pin is fixed on a conductor on the outer ring of the cable, a notch is formed in one side of the wrapping ground pin, and the signal pin is embedded in the notch of the wrapping ground pin to form wrapping of the wrapping ground pin on the signal pin; an air gap is formed between the wrapping ground pin and the signal pin so as to restrain radiation. The invention has the effect of improving the radiation effect.

The invention discloses a multi-purpose anti-radiation material and a preparation method thereof, and relates to the technical field of anti-radiation materials, the multi-purpose anti-radiation material comprises the following raw materials by weight: 30-50 parts of gadolinium polymethacrylate, 25-40 parts of a multi-element hybrid filler, 40-70 parts of chloroprene rubber, and 50-80 parts of paraffin. According to the multi-purpose anti-radiation material and the preparation method thereof, in the preparation process of gadolinium polymethacrylate, molecular chains are connected through covalent bonds to form a stable three-dimensional network structure, so that the chemical stability is improved, the stability of the anti-radiation material is improved, the service life of the anti-radiation material is prolonged, gadolinium ions are uniformly distributed in polymer chains, and the anti-radiation effect is improved. The effective concentration and the distribution uniformity of gadolinium ions are increased, so that the anti-radiation effect of the material is improved, meanwhile, the molecular chain structure of the polymer can also generate a synergistic effect with the gadolinium ions, and the absorption capacity to rays is further enhanced.

The invention discloses a single event upset cross section simulation method based on TCAD-SPICE-Geant4 joint simulation, and belongs to the technical field of integrated circuit radiation effect and reinforcement. The method comprises the following steps: firstly, extracting a critical charge value for inducing single event upset of an integrated circuit through TCAD-SPICE joint simulation; secondly, for a single-tube device at a circuit sensitive node, TCAD is used for simulating transient current pulse curves of a single-particle incident device at different positions, and charge collection weights at different positions are extracted; using Geant4 simulation particles to irradiate the quantity of electric charges generated at different positions of the device; and finally, calculating to obtain the single event upset cross section of the circuit. The simulation method has high reliability, can accurately predict the sensitive degree of the integrated circuit to single particle radiation, and provides theoretical guidance for subsequent circuit-level radiation hardening design.

The invention belongs to the technical field of combustion science and chemical kinetics simulation, and provides a method for predicting the lower combustible limit of mixed combustible gas. The method comprises the following steps: firstly, constructing and verifying a laminar flame velocity mechanism covering a single component and multiple components and the applicability to multi-component fuel; secondly, on the basis that flame stretching and radiation effects are considered in a traditional model, a dynamic instability factor is further introduced, so that the prediction precision of the lower combustible limit of the low-Lewis-number combustible gas is improved; finally, a single-component data set is generated in a unified mode, multiple regression algorithms are adopted for training and comparison, a prediction model is determined in a preferential mode, the Lunchaterow principle is combined, generalization prediction of the multi-component combustible lower limit is achieved, and finally comparison verification is conducted with existing experimental data. According to the system and the method, the dependence on a large-scale training data set is remarkably reduced, the calculation efficiency is improved on the premise of ensuring the prediction precision, and the system and the method have obvious engineering application value and are particularly suitable for the safety-critical field.

The invention discloses a stable numerical simulation method for a total ionization dose (TID) and transient dose rate (TDR) synergistic effect in a semiconductor device. According to the method, a control volume finite element tearing interconnection (CV-FETI) method is utilized, discontinuous boundary conditions are included in common numerical properties, a Newton method is adopted to overcome non-convergence caused by nonlinear characteristics of a drift diffusion model, a stable three-dimensional parallel numerical format is adopted, and a non-continuous boundary condition is obtained. Reliable and accurate simulation of radiation of the semiconductor device is realized. Compared with a Gummel iteration method, the method has good numerical stability and precision under the same voltage step. Through comparison with a commercial software calculation result, the effectiveness of the method is verified. The method provided by the invention has the advantages of good stability, precision and applicability, and can be used for high-efficiency and high-precision numerical simulation of the radiation effect of a semiconductor device, thereby improving the performance, robustness and reliability of an integrated circuit.

The invention provides a broadband wide-beam dielectric resonator antenna, which belongs to the technical field of wireless communication and antennas and structurally comprises a dielectric resonator serving as a main antenna radiator, a dielectric substrate A, a metal floor, a dielectric substrate B, a metal microstrip line and a U-shaped metal cavity from top to bottom in sequence. The U-shaped metal cavity serves as a main element of the antenna for realizing a wide beam, is placed at the bottom of the antenna, and is used for introducing vertical current and horizontal current for supplementary radiation; and the metal floor is connected with the U-shaped metal cavity. According to the invention, the bandwidth of the dielectric resonator antenna is expanded through the mode of exciting and combining the grooves and the fundamental mode of the dielectric resonator; the U-shaped metal cavity is formed by bending the floor of the dielectric resonator antenna, so that the beam width of the antenna on the E surface and the H surface is widened. In a working frequency band, the beam widths of the two surfaces are both greater than 180 degrees, so that a radiation effect with stable wide beam characteristics in a relatively wide frequency band is realized; through a method of introducing a metal sheet on the floor, the high-frequency gain is improved while the beam width is maintained.

The invention discloses a hypersonic vehicle thermal radiation effect curved surface regression online correction method and system. The method comprises the steps that a degraded image containing a thermal radiation effect is acquired; solving a dark channel image of the degraded image, and carrying out semantic segmentation; filtering and calculating a preliminarily estimated thermal radiation effect image of the semantic block; performing quadtree partitioning, and constructing a binary third-order polynomial curved surface regression model; fitting the image blocks, splicing the semantic blocks, then splicing all the semantic blocks to obtain a complete regression fitting curved surface as a thermal radiation effect bias field, and obtaining a potential clear image; and fitting the curved surface and the potential clear image through iterative regression until the curved surface regression model converges or reaches an iteration termination condition, and taking the potential clear image obtained after the last iteration as a corrected final clear image. According to the invention, the task of removing the thermal radiation effect can be completed with high quality, and the signal-to-noise ratio of the image is greatly improved.

The application discloses a kind of spaceborne storage module packaging method, spaceborne storage module and satellite, the method includes obtaining the model of packaging circuit module;Thermal simulation experiment is carried out based on the model of packaging circuit module, and heat flux density distribution information is obtained;Target cooling area is determined based on heat flux density distribution information;Packaging circuit module is installed on substrate;First shielding layer is manufactured using metal material of first density;The model of second shielding layer is obtained;Micro-channel heat dissipation area is determined based on target cooling area;Second shielding layer is manufactured based on the model of second shielding layer using metal material of second density;Third shielding layer formed by coating material is prepared on the inner surface of second shielding layer, to obtain composite shielding shell;Composite shielding shell is fixedly installed on substrate through insulating adhesive layer and contains packaging circuit module, to obtain spaceborne storage module.The application makes that composite shielding shell has anti-radiation effect and heat conduction effect simultaneously, which greatly improves the heat conduction efficiency.

The invention discloses a lightweight thermal infrared image enhancement and deblurring combined method, and aims to solve the problems of low contrast and fuzzy details caused by factors such as low environment temperature and obvious atmospheric thermal radiation effect in thermal infrared image capture. According to the method, joint optimization is realized through cascade design of a global enhancement encoder and a deblurring decoder, a global enhancement guide vector is extracted by using a space attention mechanism to perform feature domain enhancement, fuzzy features are corrected by predicting a translation mutability convolution kernel, original image detail expression is fused, a detail edge phenomenon is sharpened while textures are reserved, and the image quality is improved. And training the model by using a global contrast enhancement loss function and a detail recovery loss function. According to the method, two tasks of enhancement and deblurring are unified in an efficient and compact network framework, detail blurring is effectively inhibited while the contrast ratio of the whole image is improved, and the visual effect of the image is enhanced.

The application discloses a kind of radiation effect test method and system, for the radiation effect of to-be-tested voltage source module is tested, comprising: when to-be-tested voltage source module is in the state of not being radiated by radiation source module, the first output voltage output by to-be-tested voltage source module provides first reference voltage signal for analog-digital conversion module, and analog-digital conversion module collects fixed analog signal and converts fixed analog signal into first digital signal;When to-be-tested voltage source module is in the state of being radiated by radiation source module, the second output voltage output by to-be-tested voltage source module provides second reference voltage signal for analog-digital conversion module, and analog-digital conversion module collects fixed analog signal and converts fixed analog signal into second digital signal;According to first digital signal and second digital signal, the voltage difference of second output voltage and first output voltage is obtained, to obtain the radiation effect of to-be-tested voltage source module.This method can capture the small output change of voltage source under radiation effect.

The present invention relates to a radiation-resistant bandgap reference circuit, comprising a bandgap reference structure circuit for generating a reference voltage and a compensation current generating circuit for current compensation of transistors within the bandgap reference structure circuit. By performing current compensation on the transistors within the bandgap reference structure, the present invention reduces the impact of radiation effects on the transistor's current gain. While achieving radiation resistance, the present invention eliminates the need for high bias currents, effectively reducing system power consumption.

The invention belongs to the technical field of ceramic pigments, and particularly discloses a heat reflection brown ceramic pigment as well as a preparation method and application thereof. The general chemical formula of the heat reflection brown ceramic pigment is Ca < 1-x > (Li, Fe) < x > TiSiO5, and x is greater than or equal to 0.1 and less than or equal to 0.4. On the basis of a stable titanite crystal phase, trivalent coloring ions Fe < 3 + > and monovalent Li < + > are co-doped according to the molar ratio of 1: 1, Ca < 2 + > in the titanite structure is equivalently replaced by composite ions, the brown titanite pigment with a stable structure is formed, on the premise that the high reflectivity of the titanite is kept, effective coloring of the titanite is achieved, and the service life of the titanite pigment is prolonged. The reflectivity of the pigment in the visible-near infrared band can reach 86-90%. Meanwhile, during preparation, a mode of firstly ball-milling and then superfine grinding is adopted, the reaction activity of the raw materials in the refining process is improved by virtue of the mechanochemical action, and the color development and thermal color radiation effects of the pigment are further improved.

The embodiment of the utility model relates to the technical field of antennas, and particularly discloses a UWB module, which comprises a metal shell and an antenna unit. The metal shell is provided with an inner cavity; the antenna unit is arranged in the inner cavity, the antenna unit is coupled with the metal shell so that the antenna unit can radiate outwards through the metal shell, the antenna unit is provided with a defect gap, and the defect gap is parallel to the inner wall of the opposite part of the metal shell in the direction pointing to the edge from the center of the antenna unit. Through the above mode, the embodiment of the utility model can improve the outward radiation effect when the antenna unit is in the metal shell.

The invention discloses a graphene ceramic far infrared heater which comprises a shell and a heating table arranged above the shell, and the heating table and the shell are fixedly connected through a connecting frame. According to the invention, not only can an object material be rapidly and effectively heated, but also the focal distance between the graphene heating layer and the heated object can be adjusted according to actual needs, and the problems that the focal distance between the existing graphene heating layer and the heated object is fixedly set, so that the heat radiation distribution mode is rigid, and the heat radiation effect is poor are solved. The situation that the required heating effect is difficult to accurately realize in the face of diversified scientific research tasks due to the fact that flexible adjustment cannot be carried out according to different experiment requirements is avoided, so that the heating use is more flexible, the positioning is firmer after adjustment, and the practicability is high. The graphene heating layer on the ceramic far-infrared heater can stably heat and use a heated object, and it is ensured that the overall using effect is better.

The present application relates to the technical field of building thermal test, and provides an experimental device for coupling sky cold and hot radiation effects and a control method thereof.The device comprises a first radiation cooling component, a solar radiation component and an air cooling component, the first radiation cooling component is obliquely arranged on both sides and connected at the top to form a detection space, the air outlet of the air duct of the air cooling component is located at the bottom of the components on both sides, the air return port is opposite to the top, and the solar radiation component is fixed in the air duct away from the detection space on one side.The present application cooperatively arranges the obliquely combined first radiation cooling component, the air cooling component with air supply at the bottom and air return at the top, and the solar radiation component arranged in the air duct in isolation, constructs a detection environment balanced in cold and hot radiation, realizes coupling simulation of solar radiation heat effect and sky radiation cold effect, can more accurately test the performance of energy production type building envelope components, and solves the technical problem that the existing building thermal test device has low test precision and cannot meet the performance evaluation of energy production type building envelope components.

The invention provides a polyethylene blow-molded product anti-radiation color-changing material as well as a preparation method and application thereof, and belongs to the technical field of plastics. Comprising the following steps: S1, adding a surfactant into water, adding nano-montmorillonite, stirring for reaction, centrifuging, washing and drying to obtain intercalated nano-montmorillonite; s2, adding the intercalated nano-montmorillonite into the graphene oxide aqueous dispersion, and performing spray drying to obtain coated intercalated nano-montmorillonite; s3, uniformly mixing the coated intercalated nano montmorillonite and the zinc oxide nano powder to prepare a compound; s4, modifying the compound by a silane coupling agent with double bonds to prepare a modified compound; s5, polyethylene is heated and melted, the modified compound is added, mixing, extrusion and granulation are conducted under irradiation of an ultraviolet lamp, and the polyethylene blow molding product anti-radiation discoloration material is prepared and has the good mechanical property and the good anti-radiation effect and is not prone to discoloration, so that the durability and weather resistance of the material are improved, and wide application prospects are achieved.

To provide a technology for heat countermeasures with an improved radiation effect.SOLUTION: A drive recorder 10 as an on-vehicle device is adhered and fixed to a windshield 2 through a flat plate-like bracket 17 mounted on a first case 14 side of a main body case 13 by using a double-side tape 19. The bracket is structured of heat-conductive resin. The double-sided tape is formed by using a heat conductive double-sided tape. Thereby, heat generated from a heat source such as a power supply circuit or the like in the main body case is transmitted to the windshield via the double-sided tape from the bracket, and can be escaped to an outside of a vehicle from the windshield. For example, even when the drive recorder operates under an environment in which a cabin temperature becomes high when a vehicle is parked, the heat can be radiated.SELECTED DRAWING: Figure 1

The invention provides a radiation effect integration method, system and device of an SPICE model and a medium, and relates to the technical field of circuit simulation, and the method comprises the steps: extracting a model parameter affected by radiation from an original SPICE model corresponding to a target device, and taking the model parameter as a radiation sensitive parameter; acquiring electrical characteristic data of the target device under different radiation conditions, extracting numerical values of radiation sensitive parameters under each radiation condition based on the electrical characteristic data, and obtaining associated data between the different radiation conditions and the numerical values of the radiation sensitive parameters; based on the associated data, establishing a mapping relationship between the radiation condition and the numerical value of the radiation sensitive parameter by using a neural network model; and substituting the mapping relation into the original SPICE model to update the numerical value of the radiation sensitive parameter so as to obtain an enhanced SPICE model containing the radiation effect. According to the invention, the behavior of each device in a real circuit can be simulated more accurately in circuit simulation through the enhanced SPICE model.

The invention discloses a triple modular redundancy method based on redundancy backup and FPGA (Field Programmable Gate Array) control. Three groups of data lines are expanded on the FPGA to be connected with the Norflash, and three groups of data are read at the same time to perform triple modular redundancy calculation. The FPGA controls the four Norflash to write data at the same time during writing, and the FPGA chip selects the Norflash to output according to a logic sequence during reading, and determines whether to perform triple modular redundancy operation by judging the state of the Norflash. And sending the wrong sector number and the wrong Norflash number to the SOC chip through a serial port and a corresponding protocol, then sending the wrong sector number and the wrong Norflash number to the ground through the SOC chip, and after an instruction from the ground is received, carrying out error correction on the Norflash according to the instruction. According to the method, the influence of the radiation effect on the low-orbit satellite in the space is overcome, the cost is reduced to a certain extent, the speed and the efficiency are ensured, and meanwhile, the problems that under the condition that only three Norflash pieces exist, one Norflash piece breaks down, so that resources of the other two Norflash pieces are wasted, and data reading based on triple modular redundancy cannot be achieved are solved in a redundant backup mode.