153results about How to "Improve performance indicators" patented technology

The invention relates to the technical field of low-power-consumption AI processors, and discloses a load balancing method of a low-power-consumption AI processor, a chip and a storage medium, the method comprises the following steps: performing cache resource division on a plurality of neural mimicry cores in the low-power-consumption AI processor to obtain a double-layer cache structure; performing characteristic analysis on the target calculation task, and constructing a calculation task directed acyclic graph and a dependency intensity matrix; performing task segmentation to obtain a subtask division scheme; creating a task-core mapping table; organizing the neural mimicry core into a plurality of concentric ring layers based on the task-core mapping table to obtain a multi-layer ring cooperative computing network; and calculating a plurality of performance indexes of each neural mimicry core based on the multilayer annular cooperative computing network, and performing dynamic load optimization to obtain a dynamic load optimization strategy. According to the invention, the load balancing of the low-power AI processor is realized, and the calculation efficiency and the energy utilization rate are improved.

The invention discloses an AI model adaptive tuning method based on deep reinforcement learning, and belongs to the technical field of industrial process control, the method comprises the following steps: firstly, constructing a deep reinforcement learning environment comprising a state space, an action space and a reward function, the state space comprising a process variable measurement value, a controller parameter and a performance index; the action space is a parameter adjustment quantity vector, and the reward function comprehensively considers the stability, rapidity and accuracy of the system; then, based on a deep Q learning network of a dual-network structure, training data are stored and sampled by adopting an experience playback mechanism, and network parameters are iteratively optimized through a deep Q learning algorithm; and finally, realizing online adaptive adjustment of controller parameters by using the optimized deep Q network. The method has the advantages of being high in adaptability, good in optimization performance, high in practicability and the like, intelligent optimization control over an industrial process control system can be achieved, and the overall performance of the system is improved.

The invention relates to the technical field of polaroid performance optimization, and discloses a performance optimization design method and system for a multi-layer composite polaroid, and the method comprises the steps: carrying out the polarization spectrum analysis of a use environment of a display screen, obtaining incident polarization spectrum data, and calculating the initial stretch ratio data of each polarization layer; measuring to obtain molecular orientation degree data and polarization performance data of each polarization layer; performing feature extraction and fusion to obtain a fusion feature vector of each polarization layer; calculating the influence of the molecular orientation degree change of each polarized light layer on the optical performance of different polarization states to obtain the importance weight of the polarization state of each polarized light layer; reinforcement learning optimization is carried out, and a stretch ratio adjustment strategy of each polarization layer is generated; according to the technical scheme, multi-objective optimization and sequential quadratic programming are carried out on the processing parameters of each polarizing layer, and the stretching temperature and speed control sequence of each polarizing layer is generated, so that the precise control of the stretching temperature and speed is realized, and the performance index and the production efficiency of the polaroid are improved.

The invention relates to the technical field of special coating materials, in particular to a high-temperature-resistant heavy-duty anticorrosive fluorosilicone polymer coating as well as a preparation method and application thereof. The high-temperature-resistant heavy-duty anticorrosive fluorosilicone polymer coating is prepared from the following components in parts by mass: 80-100 parts of fluorosilicone resin, 10-15 parts of a nano anticorrosive material, 5-15 parts of wear-resistant powder, 5-10 parts of an anti-rust pigment, 1-2 parts of a siloxane dispersant, 1-2 parts of a polysiloxane defoaming agent, 1-2 parts of an organic silicon leveling agent, 1-3 parts of a polyamide wax anti-settling aid and 25-35 parts of an amino curing agent. 2 to 5 parts of an amino silane coupling agent; and the fluorosilicone resin has the molecular weight of 8000-12000 and contains silicon oxygen bonds. The high-temperature-resistant heavy-duty anti-corrosion fluorosilicone polymer coating prepared by the invention improves the adhesive force to a substrate, can be cured at normal temperature, and has excellent high-temperature anti-corrosion performance.

The utility model discloses a liquid crystal phased array based on a bidirectional switch. Comprising an upper quartz glass substrate, a lower quartz glass substrate, a liquid crystal medium arranged between the upper quartz glass substrate and the lower quartz glass substrate, polyimide films arranged above and below the liquid crystal medium, a Z-direction direct current bias network arranged on the upper surface of the lower quartz glass substrate, and a one-to-many power divider, the Y-direction direct current bias network is arranged on the lower surface of the lower quartz glass substrate, the metal ground is arranged on the lower surface of the upper quartz glass substrate, and the antenna units are coupled with the one-to-multiple power divider. Wherein the Z-direction direct-current bias network is controlled to apply a longitudinal electric field to the liquid crystal molecules, and the Y-direction direct-current bias network is controlled to apply a transverse electric field to the liquid crystal molecules. The utility model provides a liquid crystal phased array with quick response, which can obviously improve the performance index of a reconfigurable millimeter wave phased array system and is very beneficial to the integration and development of the reconfigurable millimeter wave system.

The invention discloses an electric energy meter data acquisition and analysis method based on an infrared communication technology, and relates to the technical field of intelligent power grids and data analysis, and the method comprises the steps: collecting a data signal transmitted by an infrared port of an electric energy meter, receiving an infrared data signal through an infrared receiving module, and converting the infrared data signal into an electric signal; performing filtering and noise reduction processing on the converted electric signal to obtain filtered electric energy meter data; storing the filtered electric energy meter data into a data cache region according to a time sequence, and grouping and classifying the electric energy meter data in the data cache region according to the number of the electric energy meter; performing feature extraction on the grouped electric energy meter data, and generating a power consumption feature curve in combination with the power consumption; and establishing a power consumption behavior model based on the power consumption characteristic curve, and identifying an abnormal power consumption mode. According to the invention, stable data acquisition is realized through the infrared receiving module, analysis of electricity consumption abnormity is realized in combination with a support vector machine algorithm, and the performance index of an electric energy meter data acquisition and analysis system is comprehensively improved.

The present application relates to a method, device, storage medium and terminal for optimizing the drift rate of a rubidium atomic clock. The method comprises: collecting frequency difference data of the rubidium atomic clock relative to a reference signal; establishing a time-frequency difference model of the rubidium atomic clock according to the frequency difference data and the least squares method; and adjusting the output frequency of the rubidium atomic clock according to the time-frequency difference model and the voltage-frequency fitting relationship. The present application focuses on the frequency drift compensation technology for the aging of key components inside the rubidium atomic clock. By analyzing the drift rate characteristics of the rubidium atomic clock, it is proposed to adjust the accuracy of the output frequency of the rubidium atomic clock by adjusting the voltage-controlled voltage of the constant temperature crystal oscillator inside the rubidium atomic clock, thereby improving the drift rate of the rubidium atomic clock.

The invention relates to the technical field of artificial intelligence, and provides a security risk detection method and device for an application program, equipment, a medium and a product, and the security risk detection method for the application program comprises the steps: obtaining a to-be-identified application program; inputting the to-be-recognized application program into a preset recognition model to obtain a detection result output by the preset recognition model; the preset identification model is obtained by analyzing data of an original application program installation package and training; the preset recognition model comprises a plurality of agents which work respectively, the agents are used for executing different function tasks, and the function tasks comprise task scheduling, data analysis and result decision making. By means of the mode, the intelligent level and the performance index of the recognition model can be remarkably improved, and therefore the accuracy of the safety risk detection result of the application program is improved.

The invention discloses a TIADC mismatch calibration method and circuit based on a frequency domain cross correlation coefficient. According to the method, after ADC output of each sub-channel is converted to a frequency domain, a cross correlation coefficient between adjacent channels is solved, so that a sampling moment mismatch parameter is estimated and obtained, then a calibration module is controlled to carry out data calibration through the sampling moment mismatch parameter, and sampling moment mismatch compensation is finally completed through repeated iteration. And RLT design is carried out on the FPGA, so that a mismatch calibration circuit is obtained. Compared with the prior art, the method is suitable for a multi-channel TIADC system, an auxiliary channel is not needed, and calibration can be completed only through fewer sampling points and first-order differential compensation. A simulation result shows that under the input of any signal, the overall performance is superior to that of an existing sampling moment mismatch calibration algorithm.

The invention provides a vertical perovskite soft X-ray detector, a preparation method and an imaging array, which can be applied to the technical field of X-ray detection. The vertical perovskite soft X-ray detector comprises a bottom electrode, a carrier transport layer, a perovskite light absorption layer, a passivation layer and a top electrode from bottom to top, wherein the top electrode comprises a plurality of nano holes, the plurality of nano holes in the top electrode penetrate through the top electrode, the carrier transport layer is located on a lower interface of the perovskite light absorption layer, and the passivation layer is located on an upper interface of the perovskite light absorption layer.

The invention discloses a multistage self-adaptive enhanced mixing device for a solid fuel ramjet engine, which belongs to the technical field of solid fuel ramjet engines and comprises a front flange, a rear flange, an afterburning chamber barrel, a mixing partition plate, a heat insulating layer, a pressure measuring seat and a temperature measuring seat. The front flange and the rear flange are welded with the afterburning chamber barrel, a water pressure test is carried out after welding is completed, the mixing partition plates are bonded to the inner wall of the afterburning chamber barrel through high-temperature-resistant glue, and the mixing partition plates are distributed in a multi-stage mode, are separated through a heat insulation layer and are bonded through the high-temperature-resistant glue. In order to verify the effect of the multi-stage self-adaptive enhanced mixing device for the solid fuel ramjet engine, a pressure measuring point and a temperature measuring point are arranged on an afterburning chamber barrel and a mixing partition plate; according to the multi-stage self-adaptive enhanced mixing device, the combustion efficiency of a solid fuel ramjet can be remarkably improved, and the efficiency is further improved along with the increase of the number of the mixing partition plates.

The present invention relates to the technical field of low-power AI processors, and discloses a load balancing method, chip and storage medium of a low-power AI processor, the method comprising: partitioning cache resources for multiple neuromorphic cores in a low-power AI processor to obtain a double-layer cache structure; performing characteristic analysis on a target computing task, and constructing a directed acyclic graph of computing tasks and a dependency strength matrix; performing task segmentation to obtain a subtask partitioning scheme; creating a task-core mapping table; based on the task-core mapping table, organizing the neuromorphic core into multiple concentric ring layers to obtain a multi-layer ring collaborative computing network; based on the multi-layer ring collaborative computing network, calculating multiple performance indicators of each neuromorphic core, and performing dynamic load optimization to obtain a dynamic load optimization strategy. The present invention realizes load balancing of a low-power AI processor, and improves computing efficiency and energy utilization.

The invention belongs to the technical field of integrated photonic devices, and discloses a total internal reflection light switch based on a phase change material and a use method thereof.The phase change material area is subjected to first pretreatment, the phase change material in the phase change material area is completely converted into an amorphous state from a crystalline state, and the phase change material in the phase change material area is subjected to second pretreatment; the difference value between the refractive index of the phase change material and the refractive index of the waveguide is greater than 0.6, and at the moment, the total internal reflection light switch is in a cross state; second pretreatment is carried out on the phase-change material area, the phase-change material in the phase-change material area is completely converted into a crystalline state from an amorphous state, the difference value between the refractive index of the phase-change material and the refractive index of the waveguide is 0-0.2, at the moment, the straight-through function of the total internal reflection optical switch is achieved, the power consumption of the optical switch is remarkably reduced, and the optical switch has a wide application prospect. Performance indexes of the optical switch are optimized, multi-mode optical signal transmission is achieved, and application of the optical switch in the fields of high-speed optical communication, optical interconnection and optical calculation is promoted.

The invention discloses an ultra-large type high-speed plastic extrusion flat film and flat filament unit which comprises an extruder, a water tank, a film lifting and filament cutting device, a hot air oven, a drafting mechanism, a shaping mechanism and a filament collecting mechanism. The drafting mechanism comprises a drafting rack, a drafting transmission shaft, a drafting shaft unloading device, a drafting roller, a drafting roller connecting sleeve, a drafting roller tensioning sleeve and a drafting roller motor; the number of the drafting transmission shafts is at least three, the drafting transmission shafts are arranged in parallel, the drafting shaft unloading devices extend to the middles of the drafting transmission shafts from one ends of the drafting transmission shafts, and at least two drafting roller connecting sleeves arranged in the radial direction of the drafting roller are arranged in the drafting roller. And a drafting roller tensioning sleeve is arranged between the drafting roller connecting sleeve far away from the drafting rack and the drafting transmission shaft. The ultra-large type high-speed plastic extrusion flat film and flat filament unit is high in operation speed, high in production efficiency, good in stability, low in energy consumption, capable of effectively reducing the production cost, excellent in product mechanical performance and stable in quality.

The invention provides a periodic variable pitch control phase automatic adjustment method. The method comprises the following steps: establishing a servo-rotor control linearization model; determining the mode of the aircraft; wherein the modals of different aircrafts need to correspond to different periodic variable pitch phase angles; according to the mode of the aircraft, the servo-rotor control linearization model is obtained; wherein the servo-rotor control linearization model comprises a coefficient matrix Mi; the aircraft calls the coefficient matrix Mi, the control law of a flight control system is changed according to the coefficient matrix Mi, and automatic adjustment of the periodic variable pitch control phase is achieved; meanwhile, the invention further provides a device for automatically adjusting the periodic variable pitch control phase. According to the method, by adjusting the control phase of the periodic variable pitch of the rotor, the rotor hub and blade loads can be effectively reduced, and various performance indexes of an aircraft are improved.

The invention relates to a high-temperature refractory brick taking low-grade magnesite tailings as aggregate, which is characterized by comprising the following components in percentage by weight: 60-65wt% of low-grade magnesite tailings; 15 to 25 weight percent of bentonite; 5-10 wt% of magnesium oxide; 1-3 wt% of magnesium chloride; 5.5 to 10 wt% of a modifier; and 4-6 wt% of a binding agent. The high-temperature refractory brick blank has the beneficial effects that the low-grade magnesite tailings which are relatively high in SiO2 content and cannot be used for preparing magnesium materials are used as main materials, and a certain amount of bentonite is added to serve as aggregate, so that the high-temperature refractory brick blank is complete in binding phase, small in apparent porosity and about 14-15%, high in load deformation temperature and about 1700-1720 DEG C, and high in strength and toughness; the prepared magnesite tailings have excellent chemical mineral structures, physical properties and thermal shock resistance, so that mineral resources are saved, the problem of discharge of the magnesite tailings after mineral separation is solved, and the magnesite tailings are energy-saving and environment-friendly.

The invention relates to a self-unfolding structure for an extension nozzle of a rocket engine, and belongs to the technical field of rocket engine performance. Comprising an extending spray pipe, an upper surface sub-stage, an interstage section, a lower surface sub-stage and a ball lock, wherein the upper surface sub-stage, the inter-stage section and the lower surface sub-stage are all of a cylinder section structure; the upper surface sub-stage, the inter-stage section and the lower surface sub-stage are sequentially and coaxially butted along the axial direction; the extending spray pipe is coaxially arranged in an inner cavity of the interstage section; one axial end of the extension spray pipe is fixedly connected with the upper surface substage; the other axial end of the extension spray pipe is connected with the lower surface sublevel through a ball lock; the extending spray pipe is unfolded in the axial direction; the structure mass of the extension spray pipe is further reduced, and the overall performance advantage of the extension spray pipe technology is improved.

The invention discloses a three-dimensional medical image compression system for human-machine vision. An inter-frame auxiliary feature cache module caches inter-frame auxiliary features; the auxiliary feature encoder network extracts inter-frame potential features from the auxiliary features and transmits the inter-frame potential features to the current image encoder network, the context entropy model and the auxiliary feature decoder network; the current image encoder network performs image potential feature extraction on the current image based on the inter-frame potential features; the current image decoder network decodes the potential image features based on the inter-frame decoding features; and the feature fusion module is used for performing feature fusion on features output by the current image decoder network and the auxiliary feature decoder network to obtain fused features. According to the three-dimensional medical image compression system facing the human-machine vision, the inter-frame information is used for assisting the reconstruction of the current image frame, the compression effect better than that of a traditional image compression algorithm can be achieved facing the human vision, and the performance index of a downstream medical task can be improved facing the machine vision.

The invention relates to a forsterite checker brick for a heat storage chamber of a hot blast stove, which is characterized by comprising the following components in percentage by weight: 70-75wt% of natural forsterite; 10 to 20 weight percent of clay; 5-10 wt% of magnesium oxide; 1-3 wt% of magnesium chloride; and 4-8 wt% of a binding agent. The invention has the following beneficial effects: natural forsterite is used as a main material, a certain amount of clay is added as an aggregate, a proper amount of magnesium chloride and magnesium oxide are introduced as a modifier, the brick is weakly alkaline, the main mineral phase is M2S and MgAl2O4, the apparent porosity is small and is about 13-15%, the load deformation temperature is high and is about 1720-1800 DEG C, and the brick has good thermal insulation performance. And the product has excellent chemical mineral structure, physical property and thermal shock resistance.

The utility model is suitable for the technical field of communication, and provides a dielectric filter, which comprises a cavity, a cover plate covers the cavity and is provided with a deformation part, and the deformation part is provided with a first mounting hole in a penetrating manner along the thickness direction of the cover plate; the first end of the dielectric resonator is contacted with the deformation part, and the second end is contacted with the inner bottom surface of the cavity; the locking piece is arranged in the first mounting hole in a penetrating mode, the first end of the locking piece is connected to the deformation part, the second end of the locking piece is connected with the inner bottom face of the cavity, the locking piece is made of insulating materials, the first end of the locking piece is provided with a second mounting hole, and the tuning piece is movably arranged in the second mounting hole and at least partially located in the resonant cavity. According to the dielectric filter, the acting force is applied to the deformation part through the locking piece, so that the dielectric resonance piece is stably fixed in the cavity; and the tuning piece can be tuned without electromagnetic interference of the locking piece, and can be compatible with the locking piece in occupied space, so that miniaturization of the dielectric filter is facilitated.

The invention relates to the technical field of wireless communication, and provides a power amplifier module which comprises an input matching circuit, a first-stage amplifier, a first inter-stage matching circuit, a second-stage amplifier, a second inter-stage matching circuit, a third-stage amplifier and an output matching circuit which are electrically connected in sequence. The output matching circuit is connected to a load; the power amplifier further comprises a control module and a direct-current power supply module. The direct-current power supply module is used for supplying power to the control module, the first-stage amplifier, the second-stage amplifier and the third-stage amplifier. The input end of the control module is used for receiving an external logic enable signal and controlling the direct-current power supply module to provide direct-current bias voltage for the first-stage amplifier, the second-stage amplifier and the third-stage amplifier according to the external logic enable signal. The power amplifier module can improve the PVT index performance of the power amplifier and improve the communication quality.

The invention relates to a self-deploying structure for an extended nozzle of a rocket engine, belonging to the technical field of rocket engine performance; the structure comprises an extended nozzle, an upper sub-stage, an interstage section, a lower sub-stage and a ball lock; wherein the upper sub-stage, the interstage section and the lower sub-stage are all barrel section structures; the upper sub-stage, the interstage section and the lower sub-stage are coaxially butted in sequence along the axial direction; the extended nozzle is coaxially arranged in the inner cavity of the interstage section; one axial end of the extended nozzle is fixedly connected to the upper sub-stage; the other axial end of the extended nozzle is connected to the lower sub-stage through a ball lock; the extended nozzle is deployed along the axial direction; the invention further reduces the structural mass of the extended nozzle and improves the overall performance advantage of the extended nozzle technology.

The invention relates to the technical field of silver powder preparation, in particular to a method for improving the oxidation resistance of nano silver powder. The method for improving the oxidation resistance of the nano-silver powder comprises the following steps that S1, the nano-silver powder is added into water dispersion liquid, stirring and dispersing are conducted, and silver powder dispersion liquid is obtained; s2, the silver powder dispersion liquid is subjected to vacuum suction filtration, and a filter cake is obtained; s3, adding the filter cake into an organic solvent, stirring and dispersing, adding a coating auxiliary agent, and stirring to obtain silver powder organic dispersion liquid; s4, the silver powder organic dispersion liquid is subjected to vacuum suction filtration, and silver powder is obtained; s5, the silver powder obtained after suction filtration is dried; and S6, the dried silver powder is subjected to airflow dispersion, and the modified silver powder is obtained. Through the surface modification technology, erosion of oxygen and moisture to internal silver is prevented, the oxidation resistance of the silver powder is obviously improved, the conductivity of the silver electrode is improved, and the purity is high.

The invention discloses a packaging process for high-precision pressure sensor processing, and relates to the technical field of pressure sensor packaging, and the packaging process comprises an outer shell, a conveying and cleaning mechanism, a conveying and drying mechanism and a collecting device; the overall packaging process is comprehensive and reasonable in design, and the preparation work is comprehensive to guarantee the foundation; the chip cleaning and drying integrated equipment is high in integration, all parts cooperate to ensure that the chip is clean, a high-quality chip is provided for subsequent packaging, the process is simplified, efficiency is improved, and pollution is reduced; the chip mounting and bonding control parameters are accurate, the encapsulation measures are proper, and the stability is enhanced; curing post-treatment and aging screening are strictly controlled, and reliable performance of the sensor is ensured; the collecting device facilitates chip management, improves operation convenience and production efficiency, assists automatic large-scale production, and remarkably improves sensor packaging quality and performance through the whole process.

The application relates to the field of special robot technology, in particular to a small-pipe-diameter pipeline inner wall detection method of a bionic mechanical snake based on a vision system, which comprises the following steps: one, designing a bionic mechanical snake structure; two, designing an intelligent gait planning algorithm to perform multi-modal adaptive motion control; three, designing a multi-modal detection system, the system fusing vision, thermal imaging and inertial navigation; four, based on the bionic mechanical snake, the intelligent gait planning algorithm and the multi-modal detection system, detecting the inner wall complex working conditions of the small-pipe-diameter pipeline. The application can preferably detect the inner wall of the small-pipe-diameter pipeline.

The invention relates to the technical field of server power supply management, in particular to an intelligent management method and system for a server power supply, and the method comprises the steps: obtaining a historical load data sequence and current load data of a server; based on the historical load data sequence, topological dynamics load prediction is executed, and a predicted load sequence is obtained; according to the predicted load sequence, optimization is carried out through group theory transformation optimization, and an optimized predicted load sequence is obtained; generating a control strategy by using a chaos control strategy based on the optimized predicted load sequence; performing quantum probability field optimization on the control strategy to obtain an optimized control strategy; performing non-exchangeable geometric fine tuning on the optimized control strategy to obtain a final control strategy; and the final control strategy is output for adjusting the power supply of the server, so that the system can optimize resource allocation in advance due to the great improvement of the prediction accuracy, the energy waste is effectively reduced, and the stability and the reliability of the system are enhanced.

The present invention provides a method and electronic device for optimizing the energy storage of a distributed photovoltaic and energy storage system, and relates to the field of electric power technology. The daily output power curve of the distributed photovoltaic and the daily load demand curve are calculated, and the energy storage margin model is constructed in combination with the life and capacity relationship of the energy storage system to obtain the optimized characteristic curve of the daily energy storage margin and the output power and load demand relationship, and then the output power curve of the distributed photovoltaic and the load demand curve of the next day are combined to determine the energy storage margin of the energy storage system for the next day; with the minimum cost as the goal, the current day's charging margin of the energy storage system is optimized; when the distributed photovoltaic starts to output power on the current day, the energy storage system is controlled to output power at the same time, so that the total output power of the distributed photovoltaic and energy storage system on the current day reaches the output power stable value. The present invention obtains more accurate daily energy storage and grid-connected power generation, so that the total output power meets the stability index, with less calculation and simple calculation.

This invention relates to a method for producing low-density, high-strength, and high-toughness protective steel plates from continuously cast billets, belonging to the field of metallurgy. The steel plate is an Fe-Mn-Al-C series austenitic low-density steel plate with an austenitic matrix supplemented by dispersed fine precipitated carbides, achieving high strength and high toughness, thus meeting the requirements for ballistic protection. The steel plate has a production thickness of 6-12 mm, a width of 1600-3000 mm, and a density of 6.75-7.05 g / cm³. 3 It has a density 7.85 g / cm³ higher than that of conventional steel. 3 The steel plate exhibits at least a 10% reduction in weight, good machinability and weldability, and excellent ballistic protection performance. A 6mm thick steel plate meets the NATO AEP STANAG 4569 standard Level I ballistic protection requirements, while a 12mm thick steel plate meets the NATO AEP STANAG 4569 standard Level II ballistic protection requirements. Production process: smelting—continuous casting—slow cooling—rolling—heat treatment—finishing—inspection—warehousing.

The invention provides biomass cotton cellulose based on waste cotton textiles and a preparation method thereof, and the method comprises the following steps: crushing the waste cotton textiles, sterilizing, disinfecting, drying, dipping in alkali liquor and cooking, adding a DES eutectic solvent, mixing, pulping the obtained material, bleaching, desanding, concentrating and papermaking to obtain the biomass cotton cellulose. Wherein a metal chlorate catalyst and an auxiliary agent are added during cooking. According to the method, the waste cotton textile is adopted as a raw material, and the cotton cellulose with excellent performance is prepared by performing high-added-value recovery on the waste cotton textile, so that the environmental problem caused by the waste cotton textile can be effectively relieved, and the resource waste is reduced. Meanwhile, the production cost of the cotton cellulose can be reduced, and the problem of insufficient production raw materials of existing biomass cellulose products is solved.

The utility model discloses a hydrogen injection fuel cell standby power supply system. According to the technical scheme, the hydrogen injection fuel cell standby power supply system is characterized by comprising a gas inlet electromagnetic valve and a fuel cell stack which are connected with hydrogen through a pipe, the gas inlet electromagnetic valve outputs gas to an injection device, and a pressure release valve and a pressure sensor are arranged between the injection device and the fuel cell stack; and a gas-water separator is arranged at the output end of the fuel cell stack and is matched with the injection device for circulation. The injection device is adopted to replace a traditional mode that a proportional valve and a hydrogen pump are combined for circulation, so that efficient operation of the system is maintained, and stability and reliability of the system are enhanced.