41results about How to "Reduced integrity" patented technology

The invention relates to the technical field of unmanned aerial vehicles, in particular to a mooring unmanned aerial vehicle safety management system which comprises a multi-source data acquisition module, a data fusion and analysis module, an intelligent risk assessment module, a control instruction generation module and an execution mechanism module. The multi-source data acquisition module acquires flight and mooring cable data of the unmanned aerial vehicle by using various sensors, and transmits the flight and mooring cable data to the data fusion and analysis module through a time division multiple access protocol with low packet loss rate and low delay; the intelligent risk assessment module judges a risk level by combining a risk assessment model based on a support vector machine and a Bayesian network algorithm according to the information, and generates prompt information if the risk level exceeds a preset range; the control instruction generation module generates instructions according to a risk prompt and a preset strategy, ranks the instructions and sends the instructions to the execution mechanism module; a flight control system in the execution mechanism module cooperates with a mooring cable electric take-up and pay-off device and the like, real-time adjustment and control over the flight attitude of the unmanned aerial vehicle and the cable state are achieved, and it is ensured that tasks are safely and stably executed in the complex environment.

The invention discloses a precipitation-supported coated slow-release carbon-based iron fertilizer and a preparation method thereof.The preparation method specifically comprises the steps that a biological crustacean heavy metal adsorbent is soaked in a ferrous sulfate solution and then soaked in a calcium hydroxide solution again after low-temperature drying, finally, dried particles are granulated and subjected to coating treatment, and the coated slow-release carbon-based iron fertilizer is obtained. The coated slow-release iron fertilizer is loaded in a precipitation mode, a mixture of precipitated ferric hydroxide and ferrous hydroxide is uniformly dispersed and attached to the interiors of pore channels of the porous adsorbent, and the precipitated ferric hydroxide and the ferrous hydroxide are wrapped by a byproduct calcium sulfate in the porous adsorbent, so that long-acting slow release of iron ions can be realized; the rice cadmium arsenic antagonistic iron fertilizer has the advantages that the rice cadmium arsenic antagonistic effect can be achieved, the oxygen content of soil can be reduced, fine quantitative use of the coated iron fertilizer in the seedling raising period is matched, iron ion antagonism and a precipitation type adsorption load mode are carried out in the whole rice growth process, the iron ion release period is greatly prolonged, and the iron fertilizer has the excellent rice cadmium arsenic antagonism effect and has the excellent application prospect.

The invention provides a Flash memory testing method and device, electronic equipment and a storage medium, and relates to the technical field of testing. The method comprises the following steps: writing first test data into a Flash memory through data read-write software of an upper computer; reading the first storage data in the Flash memory through the data read-write software, verifying the write-in condition of the first test data according to the first storage data to obtain a write-in verification result, and controlling the relay to be disconnected when the data is successfully written in; controlling the relay to be closed after a first preset time is continued, reading second storage data in the Flash memory through the data read-write software, and verifying the reading condition of the first test data according to the second storage data to obtain a read verification result; and circulating the steps for multiple times, and evaluating the read-write stability of the Flash memory according to the obtained write-in verification results and read verification results for multiple times, thereby realizing the read-write stability test of the Flash memory with low cost.

The invention discloses a message body encryption method, a server, electronic equipment and a storage medium, and relates to the technical field of security encryption, and the message body encryption method applied to the server comprises the following steps: generating a session key according to a received equipment identifier under the condition that the authentication of the electronic equipment is passed; encrypting the session key by using a preset private key to obtain an encrypted string, and sending the encrypted string to the electronic equipment, so that the electronic equipment decrypts the encrypted string by using a preset public key to obtain the session key, and encrypts the initial message body by using the session key to obtain an encrypted message body; under the condition that the encrypted message body and the first algorithm identifier sent by the electronic equipment are received, determining a decryption algorithm according to the first algorithm identifier; and decrypting the encrypted message body by using a decryption algorithm and the session key to obtain an initial message body. Through encrypted transmission, the probability of occurrence of data leakage in the data transmission process is reduced.

The invention discloses a radiation monitoring data compression and real-time transmission method and system, and relates to the technical field of data compression and transmission, and the method comprises the steps: collecting original radiation monitoring data, and carrying out the data preprocessing; carrying out lossless compression coding on the radiation monitoring data characteristics; the compressed data are divided into small segments, and the data are transmitted in a segmented mode; and after receiving the data, the receiving end decompresses the data according to the compression reverse operation. According to the invention, the transmission efficiency and reliability of radiation data under the condition of low bandwidth can be obviously improved. The compression algorithm can realize a data compression rate of at least 50% or more, and meanwhile, the integrity and precision of the data are kept. In addition, a real-time transmission mechanism ensures that data can be effectively transmitted under an extreme network condition, and the delay and packet loss rate of data transmission are remarkably reduced. The volume of radiation monitoring data can be significantly reduced without sacrificing the quality and integrity of the data.

The invention discloses a full-automatic PTEE film stretching and sintering machine and a stretching and sintering method, and relates to the technical field of PTEE film stretching and sintering machines, the full-automatic PTEE film stretching and sintering machine comprises a sintering and heating bin, conveying pieces, a film to be stretched, a first assembly, a second assembly and a third assembly, the conveying pieces are symmetrically arranged in an inner cavity of the sintering and heating bin, and the film to be stretched is located in the middle of the conveying pieces; the first assembly and the second assembly are located on the same vertical plane, and through the design of the stabilizing pipe and the pushing piece, solution conveying work can be completed when the first assembly and the second assembly work; the problem that whether the conveying device and the stretching device are not flush or not and consequently the thin film is stressed unevenly can be ingeniously monitored indirectly through movement of the push piece in the stabilizing pipe; the design of one group of parts with multiple functions obviously reduces the complex maintenance work and cost caused by the increase of the parts; the overall operation efficiency of the equipment is improved, and the production continuity is guaranteed.

This utility model discloses a sludge scraping and slag removal device for a black film biogas digester, belonging to the field of biogas digester technology. It includes: a sludge discharge pipeline system located inside the black film digester; the sludge discharge pipeline system includes a main sludge discharge pipe, with sludge discharge branch pipes connected to both sides of the main sludge discharge pipe, and a fixed cylinder installed at the end of each branch pipe away from the main sludge discharge pipe. This utility model uses a pump installed on the sludge discharge pipeline system to generate suction on the sludge, causing the sludge to be discharged upwards from the bottom of the digester along the branch pipes and the main sludge discharge pipe. When the sludge passes through the inside of the fixed cylinder, it pushes the impeller plate on the connecting shaft, which in turn drives the mounting base and flexible scraper rod to rotate. This facilitates light scraping of the sludge around the inlet of the branch pipe, loosening the accumulated sludge and making it easier for the sludge to collapse under gravity. Simultaneously, a backwashing system uses water pressure to flush the sludge at the bottom of the digester, reducing the integrity of the sludge, increasing its fluidity in the wastewater, and making it easier to discharge.

The invention discloses a network flow generating and repairing method based on protocol constraint. The method comprises the following steps: analyzing an original traffic capture file, extracting basic features through stream-level recombination and session segmentation, and mapping a continuous time sequence and a discrete protocol field to a uniform feature space; and on the basis, constructing a diffusion type network flow generation model to capture a statistical attribute and time sequence dependency relationship of the network flow. In the generating or repairing process, a protocol state machine is constructed, protocol constraint is introduced in the reverse denoising stage, the sampling process is constrained through a legality guiding mechanism, and protocol logic violation in the generating process is avoided. And finally, through feature inverse mapping and virtual protocol stack state maintenance, reconstructing to obtain network flow data which meets a communication protocol specification and can be correctly analyzed by a real protocol stack. According to the method, the generation and repair of the network traffic can be realized under a unified framework, and the correctness of a result in protocol semantics is ensured.

The present invention discloses a method and device for regenerating waste activated carbon powder, and relates to the technical field of activated carbon powder regeneration. The present invention comprises a base, a primary granulation component is arranged on the top of the base, a secondary granulation component is arranged on the right side of the primary granulation component, a drying component is arranged on the right side of the secondary granulation component, a connecting pipe is arranged on the top of the drying component and the top of the granulation component, a screening component is arranged on the right side of the drying component, a conveying component is arranged on the top of the screening component, and a mixing component is arranged on the bottom of the left end of the conveying component. The present invention further enhances the bonding effect between the material and the binder by means of the guiding effect of the guide rod, and at the same time, the limit ring prompts the elastic scraper to always be close to the inner wall of the mixing component, preventing the activated carbon powder from adhering to the inner wall of the mixing component due to its own high humidity, and avoiding the material from being difficult to adhere to the composite binder due to adhesion, thereby avoiding the material remaining inside the mixing component to cause resource loss.

This invention provides a continuous implantation device for PDX model tumor tissue, comprising: a main cannula; and a pushing component disposed at one end of the main cannula. The continuous implantation device for PDX model tumor tissue provided by this invention utilizes the cooperation of structures such as the main cannula, the pushing component, the tissue sampler, and the retaining spring. The tissue sampler can be pre-loaded with multiple tumor tissue blocks, the retaining spring enables precise positioning and switching of the tissue sampler, the pushing component can sequentially push the tissue blocks for implantation, and the main cannula can be externally connected to an syringe to achieve simultaneous delivery of gel and tissue blocks. This device enables continuous implantation of tumor tissue blocks without the need for repeated clamping and transfer operations, significantly improving implantation efficiency and avoiding the decrease in activity caused by prolonged exposure of tissue blocks outside the body. Furthermore, it eliminates the need for clamping tissue blocks during transfer, reducing the risk of mechanical damage and ensuring the integrity of the tissue blocks. It also enables simultaneous delivery of tissue blocks, gel, and drugs, improving the experimental adaptability of the device.

The present invention provides a tunnel construction method using laser rock breaking, comprising: step S110: using laser to cut the tunnel face along a preset trajectory, so that the tunnel face forms a concave-convex rock mass with a cut to be squeezed; step S120: using an extrusion device to squeeze the concave-convex rock mass from the cut to be squeezed, so that the concave-convex rock mass breaks and falls off; step S130: repeating steps S110 to S120 until a preset excavation depth is reached. The present invention uses laser to replace the tool, and the laser destroys the rock in the form of thermal fragmentation, melting and gasification, so that a concave-convex rock mass is formed on the tunnel face, and the integrity and connection strength of the tunnel face are greatly reduced, and then the extrusion device is used to squeeze the concave-convex rock mass to break and fall off. The present invention abandons the traditional metal tool rock breaking method, fundamentally solves the problem that the metal tool of the tunnel boring machine is very prone to abnormal damage when cutting rock, improves construction efficiency, and saves high tool costs.

The invention relates to the technical field of chain machining, and provides an automatic cutting device for chain machining, which comprises a machine body, a mounting rack, a fixing cylinder, a mounting assembly, a feeding assembly, a cutting rack, a driving assembly and a cutting assembly, a feeding rack is fixedly mounted at the upper part of the machine body, and the mounting rack is fixedly mounted on the inner top wall of the feeding rack; the two ends of the feeding rack are symmetrically and fixedly provided with two fixing cylinders, each fixing cylinder is internally provided with an installing assembly, the feeding assembly is installed in the installing rack, the cutting-off rack is fixedly installed at the discharging end of the feeding rack, a driving assembly is installed between the two fixing cylinders close to the cutting-off rack, and the cutting-off assembly is installed on the cutting-off rack. By means of the technical scheme, the problems that in the prior art, due to the fact that a chain is complex in structure, when chains of different sizes are cut, unmatched chain wheels are used, the chains are subjected to excessive stress, and the original structure of the chains is damaged in the cutting process are solved.

The utility model discloses an electronic board card fault identification device which comprises a rack and a convenient sorting device. According to the electronic board card sorting device, the convenient sorting device is arranged, namely, when the guide plate arranged in the sorting assembly inclines rightwards, the guide plate can assist in guiding out qualified electronic board cards, and when the guide plate is subjected to intermittent transmission of the rotary disc, the convex shaft and the grooved wheel plate, the rotary shaft can rotate the guide plate reversely, so that the guide plate inclines leftwards to guide and convey unqualified electronic board cards, and therefore the sorting efficiency is improved. According to the electronic board card sorting device, electronic board card sorting matching can be conveniently carried out, so that the electronic board card sorting and overall fault recognition efficiency is greatly improved, a positioning assembly is arranged, in other words, under meshing transmission of a first bevel gear and a second bevel gear, a rotating rod can achieve relative transmission of connecting rings arranged on the two sides, and therefore positioning plates arranged on the two sides move indirectly; the conveyed electronic board card is conveyed in the middle, it is guaranteed that follow-up fault recognition is clear and efficient, and the phenomenon that the fault recognition position deviates or is incomplete is reduced.

The invention relates to a method for predicting the slow change of analog quantity of a hydropower unit based on characteristic value monitoring. The method forms a time series sample set by regularly sampling the temperature and vibration frequency of the core components of a water turbine; after the samples are normalized, a weighted sum and standard deviation are calculated as the analog quantity; the current slope value is obtained by using local linear regression, and the analog quantity value of the next time series is predicted by using a random forest model; the current and predicted slope values ​​are compared to reflect the slow change trend of the analog quantity; the method of the invention can effectively predict the slow change of the analog quantity of the hydropower unit, help to discover potential faults in advance, and improve the operating safety and stability of the hydropower unit.

The present application belongs to the technical field of nondestructive testing of building materials, and particularly relates to a rebound nondestructive testing method and system for the compressive strength of rapidly hardened cement-based materials. The technical solution is as follows: sample data of rapidly hardened cement-based materials is collected to construct a sample data set; the sample data set is subjected to outlier rejection, normalization processing and feature weight mapping to form a multi-dimensional input feature vector; based on the multi-dimensional input feature vector, a compressive strength prediction model is constructed, and the model parameters are optimized through k-fold cross-validation; the rebound value, curing age and mix proportion parameters of the rapidly hardened cement-based material to be tested are input into the trained compressive strength prediction model to output the corresponding compressive strength detection value. The present application can comprehensively consider sample data, establish a nonlinear mapping relationship between multi-dimensional features and compressive strength, thereby realizing rapid, continuous and high-precision evaluation of the compressive strength of rapidly hardened cement-based materials without damaging the materials or structure.

The invention relates to a match registration system and method, the match registration system comprises a match registration module and a personal center module, the match registration module is used by a sponsor, and the match registration module comprises a first form filling unit, a first match participation information unit, a first notification center unit and a data verification unit. The personal center module is used by competitors and comprises a second form filling unit, a second competition information unit and a second notification center unit; personal information of the user is recorded through the system, personal information fields of the user are automatically matched with information fields of the application table created by the sponsor, the same fields are automatically redisplayed by the system, the user only needs to fill in part of information, the application table is quickly filled in, the application process can be simplified through the mode, and the application efficiency is improved. And thus, the participant can quickly and smoothly finish registration.

The application discloses application of ginseng glycoprotein monomer in preparation of a medicine for treating intestinal inflammation, and belongs to the technical field of biological medicine. The ginseng glycoprotein monomer extracted by the application has a molecular weight of 27kDa, a total sugar content of 65.3±2.0%, and a total protein content of 29.9±0.2%. The ginseng glycoprotein monomer can effectively treat Caco-2 cell activity reduction, cell monolayer integrity reduction and inflammatory factor release caused by DSS, and restore tight junction protein ZO-1 and Occludin expression. Therefore, the ginseng glycoprotein monomer can be used for preparing an effective medicine for treating intestinal inflammation.

The invention relates to the technical field of intelligent construction, in particular to an intelligent construction data analysis system based on digitization. The data acquisition unit is used for acquiring various data of a construction site; by monitoring the working state of each construction device and the construction progress of each stage in real time, the latest data among the modules are obtained, the data of the modules are shared in one platform, management is carried out based on a digital driving mode, the data of the modules are not isolated any more, and the construction efficiency is improved. Instead, mutual interaction can be carried out through a digital system, the risk of data dependence is reduced, meanwhile, the complexity of data synchronization is reduced, the consistency and integrity of interactive data are ensured, and when data differences occur after analysis, the data are synchronized to related modules immediately, so that data delay is reduced, and the data synchronization efficiency is improved. The situation that maintenance is needed due to data asynchronization is avoided, and the accuracy and efficiency of a construction plan can be improved.

The invention discloses a glass ceramic for dental restoration, which comprises the following components in percentage by mass: 55-70% of SiO2, 10-30% of Li2O, 3-12% of K2O, 0-3% of Al2O3, 0.1-4% of Na2O, 0.1-3% of B2O3, more than or equal to 6% of nucleating agent, 0.1-5% of CeO2 and 0.1-3% of other pigments, and the sum of the mass fractions of the raw materials is 100%. The glass ceramic is prepared by adopting a melt pouring method, and is directly annealed after being poured without crystallization heat treatment; the restoration body is prepared in a hot die casting mode, no casting channel hole is formed in the contact point of the casting channel and the restoration body, and therefore the requirements for attractiveness, energy consumption reduction and cost reduction can be met.

The invention discloses a gold bump preparation method for thermal ultrasonic spherical gold wire bonding, a flip-chip bonding structure and a chip, and relates to the field of chips. According to the mass fraction, the method comprises the following steps that a plurality of gold protruding points are formed on a flip-chip bonding pad through hot ultrasonic spherical gold wire bonding, and the width of the flip-chip bonding pad is larger than or equal to 150 micrometers. A plurality of gold bumps are formed through thermal ultrasonic spherical gold wire bonding, so that the plurality of gold bumps can support a flip-chip bonding pad with the width greater than or equal to 150 [mu] m for a large-size chip. Based on the specific requirements of gold wires with different diameters and the sizes of the bonding pads, combined preparation of various gold bumps is performed, the contact area of the bonding pads on the flip chip and the bonding pads on the substrate is increased, electrical signal interconnection between the bonding pads is completed, the gold bump process replaces micro gold bumps and copper columns which are high in cost and complex in process, the cost can be reduced, and the production efficiency is improved. The efficiency is improved.

The present invention relates to the field of intelligent information management technology, and in particular to an intelligent information management method and system based on cloud computing. The method comprises the following steps: performing load time series skewness analysis on enterprise database log data to obtain load fluctuation time series skewness data; performing table structure analysis on the enterprise database based on enterprise database management authority, and performing table structure performance bottleneck analysis to obtain table structure performance bottleneck data; performing asynchronous read-write cache processing on the database table structure according to the table structure performance bottleneck data and load fluctuation time series skewness data to obtain an asynchronous read-write cache database; performing compatibility matching on the asynchronous read-write cache database to obtain an asynchronous read-write compatibility cache database; and connecting the asynchronous read-write compatibility cache database to the enterprise database to perform intelligent information management. The present invention makes the intelligent information management technology more perfect by optimizing the intelligent information management technology.

The invention discloses a multilayer apocarya seedling cultivating and growing device which comprises a concentric-square-shaped vertical support A and a concentric-square-shaped vertical support B arranged on the left side of the concentric-square-shaped vertical support A. A cultivating and growing placing frame A, a cultivating and growing placing frame B and a cultivating and growing placing frame C are connected between the concentric-square-shaped vertical support A and the concentric-square-shaped vertical support B respectively. A novel protection type fertilization device is additionally arranged in each cultivation and growth pot on the multilayer type apocarya seedling cultivation and growth device, the protection type fertilization device is mainly characterized in that a proper amount of fertilizer is stored in a metal fertilization barrel, and then the metal fertilization barrel is inserted into soil in the cultivation and growth pots through an insertion conical tip; the small release holes in the metal fertilization cylinder can make the fertilizer slowly permeate into soil, compared with direct fertilizer spreading, the release speed of the fertilizer can be controlled more accurately, fertilizer damage caused by rapid dissolution of the quick-acting fertilizer due to watering and other factors is avoided, and plants can continuously absorb nutrients.

The invention discloses a method for instantaneously recovering a VMware virtual machine. The method comprises the following steps: preparing backup data; the backup data are stored in a backup set; selecting a reduction point; backup data needing to be restored are selected from the backup set; starting an NFS service, and creating a folder required by the NFS service; the method comprises the following steps: mounting an NFS (Network File System) service as a Datastone on an ESXi (Electronic Security In a folder of the last backup point of the selected backup set, copying a. Vmx file of the virtual machine, renaming the. Vmx file, and then registering the virtual machine to ESXi; creating a snapshot, and copying a newly generated snapshot disk file to an independent folder; re-registering the virtual machine; according to the method and the device, the designated state is quickly recovered by backing up the data, creating the snapshot, selecting the recovery point and mounting the NFS for sharing, so that the recovery efficiency is improved, the system downtime is shortened, the original virtual machine data is effectively protected, and the risk of data loss is reduced.

The invention relates to the technical field of power equipment monitoring, in particular to a transformer state online monitoring and fault early warning device and method. According to the technical scheme, the transformer state online monitoring and fault early warning device comprises an early warning device body, a control unit, an environment sensor, a wiring port, a current sensor, a wireless communication mechanism, a buzzer and a protection plate, the control unit is arranged at the bottom end of one side of the early warning device body, and the environment sensor is arranged on one side of the control unit; the environmental sensor is introduced to realize real-time monitoring of the humidity of the operating environment, a collaborative analysis mechanism of environmental data and electrical data is established, the environmental sensor continuously acquires the humidity value of the operating environment of the transformer, and the control unit performs digital filtering processing on the humidity data to eliminate environmental noise interference. After the standardized humidity value is generated, the standardized humidity value and the current data jointly participate in fault diagnosis, and deep correlation between environmental factors and equipment states is achieved.

The invention discloses a technology for applying a low-density grey silicon plate to a fireproof door, and relates to the field of fireproof door preparation technology.The fireproof door comprises a door plank, first fireproof plates are installed in the upper side and the lower side of the door plank correspondingly, and hard wood plates are installed on the sides, away from the middle of the door plank, of the first fireproof plates correspondingly; and a glue layer is bonded between the hard wood plate and the first fireproof plate, a first edge sealing plate is installed in one side of the door plate, and a second fireproof plate is installed on the inner side of the first edge sealing plate. By using the fireproof plate made of the fiber cement plate, the calcium silicate plate and the low-density ash silicon plate, the fireproof performance of the fireproof door is improved, the fireproof time can reach 1-4 hours, fire spreading can be effectively prevented, the safety of a building is improved, and the fireproof plate is compact, sound-insulating, capable of effectively isolating sound transmission, water-resistant, moisture-resistant, corrosion-resistant, insect-resistant, durable and weather-resistant and can be widely applied to the field of fireproof doors. The service life is prolonged and the maintenance and replacement cost is reduced.

The invention discloses a rapeseed oil production feeding structure based on rapeseed oil preparation data and a method thereof, and relates to the technical field of rapeseed oil production. The device comprises a device body, a funnel is arranged at the top of the device body, a fine material box is arranged at the bottom of the device body, electric telescopic rods are symmetrically and fixedly installed at the bottom of the inner wall of the fine material box, a bearing plate is arranged at the tops of the telescopic ends of the electric telescopic rods, and a coarse material box is arranged at the edge of the top of the fine material box and communicates with the interior of the device body; a control assembly is arranged on the left side of the fine material box. An anti-mixing device is arranged in the device main body, and an anti-adhesion device is arranged above the anti-mixing device. The movement range of the blower gun assembly is enlarged, dirt raised for the second time is absorbed in time, the overall cleanliness of rapeseeds is guaranteed, it is avoided that the dirt attached to the surfaces of the rapeseeds contains harmful substances such as heavy metal, and the edible safety of oil products is prevented from being reduced.

This invention provides the application of the FgFd1 gene in regulating the growth, reproduction, pathogenicity, and stress resistance of *Fusarium graminearum*, belonging to the field of genetic engineering technology. The nucleotide sequence of the FgFd1 gene is shown in SEQ ID NO.2, and the amino acid sequence of the protein encoded by the FgFd1 gene is shown in SEQ ID NO.1. The *Fusarium graminearum* FgFd1 gene knockout mutant (ΔFgFd1) obtained by this invention exhibits slower growth rate, reduced conidia number, decreased pathogenicity, and reduced stress resistance compared to the wild-type (WT) strain. This invention provides a technical basis for exploring the molecular mechanisms of sporulation and pathogenicity of *Fusarium graminearum*, and provides potential molecular targets for developing disease control measures targeting sporulation inhibition, showing broad application prospects in plant fungal disease research.

The application discloses lactobacillus plantarum WH021 and application thereof in prevention and / or alleviation of neuroinflammation, and belongs to the technical field of microorganisms. The lactobacillus plantarum WH021 is obtained by separation and purification from healthy infant feces, is a probiotic with the effect of alleviating neuroinflammation, and has good application potential in development of food, health products and drugs for preventing brain inflammation related diseases of middle-aged and old people caused by chronic inflammation of the body.

The invention belongs to the field of data processing, and particularly relates to a gas meter security authentication method based on a national secret algorithm and a related device, and the method comprises the steps that a gas meter obtains a key negotiation file issued by a server; a key management model is adopted, prediction processing is conducted according to the key negotiation file, and a key distribution strategy corresponding to the gas meter is obtained; accessing the ESAM module based on the key distribution strategy, and obtaining a pre-configured encryption file matched with the key distribution strategy in the ESAM module; and executing data encryption in the gas meter by adopting the pre-configured encryption file, and uploading the encrypted gas meter data to a server, so that the server completes decryption of the gas meter data based on a pre-deployed decryption strategy. According to the method, the key updating strategy can be intelligently predicted, so that the data transmission and storage process has high safety and reliability, the flexibility of key management is guaranteed, the communication overhead caused by key updating is reduced, and the overall operation efficiency and safety of a gas meter system are improved.

The invention relates to the technical field of green tea processing, in particular to a processing method of chestnut-fragrance green tea, which comprises the following steps: (1) tea leaf treatment, (2) tea leaf fixation, (3) tea leaf fermentation, (4) tea leaf shaping, and (5) drying. According to the method, water in the tea leaves is fully released through layered temperature treatment during tea leaf treatment, meanwhile, the activity of the tea leaves is guaranteed, after microwave treatment, the cell structures of the tea leaves are fully destroyed, the integrity of the cell structures of the tea leaves is further reduced through fixation, the fragrance richness of the tea leaves is improved, and the chestnut fragrance is more sufficient.