微型服务器

Joint sealing detection system and detection method based on federal reinforcement learning

The invention belongs to the technical field of contact detection, and particularly relates to a joint sealing detection system and detection method based on federal reinforcement learning, the system is specifically divided into an edge user terminal and a central cloud server, and the method comprises two parts of joint sealing detection system training and joint sealing detection system use. According to the invention, in a federated learning environment, contact data transmitted between users through Bluetooth signals can be always stored in an edge user terminal, so that user data and privacy security are protected; the method comprises the following steps: learning the relevance between a Bluetooth close connection signal and a distance by using a recurrent neural network, learning to obtain a close connection time inference model, and inputting Bluetooth signal sequence data to obtain close connection time under different distance intervals; according to the parameter fusion method ...

Multi-mode TRL calibration method based on improved mode tracking and symbol judgment

The invention provides a multi-mode TRL calibration method based on improved mode tracking and symbol judgment. The multi-mode TRL calibration method comprises the steps of S1, port number standardization check; s2, converting the S parameter into the T parameter; s3, matrix decomposition is carried out, and eigenvalues and eigenvectors are solved; s4, mode sorting and characteristic value mode tracking, wherein a mode tracking method based on Hermite inner product is adopted; s5, judging the symbol of the reflector; and S6, obtaining DUT parameters. According to the multi-mode TRL calibration method based on improved mode tracking and symbol judgment, the time complexity of the algorithm can be remarkably reduced.

Tea rolling machine

The invention discloses a tea rolling machine which is composed of a supporting frame, a rolling disc, a rolling barrel, a driving assembly and a gland. The rolling disc is connected to the support frame; the rolling barrel is arranged above the rolling disc, and the rolling barrel is connected with the supporting frame through a driving assembly; one end of the pressing cover is rotationally connected to the supporting frame, and the other end of the pressing cover is used for applying acting force to the tea leaves contained in the rolling barrel; the rolling machine further comprises a transmission assembly, the transmission assembly is fixedly arranged on the supporting frame, and the gland is in transmission connection with the transmission assembly. According to the device, transmission between the gland and the transmission assembly is switched through self arrangement of the gland, transmission between the gland and the transmission assembly can be cut off after tea leaves are subjected ...

GROUP NETWORK IDENTIFICATION METHOD AND DEVICE, COMPUTER DEVICE, AND COMPUTER-READABLE STORAGE MEDIUM

Disclosed in the embodiments of the present application are a group network identification method and device, a server and a computer-readable storage medium, the method comprising: confirming the attribute value sending direction of each node according to data transfer features of a target group to be identified; on the edge where a first node in a data transmission relation network is connected to an adjacent second node, sending a vector and a first node attribute value of the edge to a second node along the sending direction; performing weighted calculation on the edge vector received by the second node according to a preset calculation logic so as to obtain an edge having an optimal weight; updating the attribute value of the second node according to the attribute value of the first node connected to the edge having the optimal weight; executing the foregoing steps iteratively until the iteration conforms to a preset stop condition, confirming the nodes that are also in the same target ...

Box-type roadbed structure with active vibration isolation performance and construction method

The invention discloses a box-type roadbed structure with active vibration isolation performance and a construction method, and relates to the field of active vibration isolation of high-speed railway roads.The box-type roadbed structure comprises short piles, the short piles are vertically buried in foundation soil, the upper surfaces of the short piles are provided with wave resistance plates, the wave resistance plates are horizontally buried in the surface layer of a foundation, and the upper surfaces of the wave resistance plates are horizontally provided with bottom plates; a vertical plate is vertically placed on the upper surface of the bottom plate. The wave resistance plate with the groove and the groove hole is additionally arranged on the lower portion of the box-type roadbed, the groove hole is formed in the wave resistance plate and used for being filled with glass wool, the groove is formed in the surface of the wave resistance plate and used for containing the rubber cushion ...

High-strength corrosion-resistant Cu-Ni-Sn alloy and preparation method thereof

The invention belongs to the technical field of alloy materials, and particularly relates to a high-strength corrosion-resistant Cu-Ni-Sn alloy and a preparation method thereof. The medium-high-strength corrosion-resistant Cu-Ni-Sn alloy comprises the following components in percentage by mass: 14%-17% of Ni, 7.0%-9.0% of Sn, 0.6%-1.5% of Al, 0.2%-0.8% of Zn, 0.05%-0.5% of Cr, 0.05%-0.5% of Nb, 0.05%-0.15% of Zr and the balance of Cu. The preparation method of the alloy comprises the following steps: smelting and casting alloy raw materials into a cast ingot, and sequentially carrying out multi-stage homogenization treatment, hot rolling, pre-aging, primary cold rolling, aging, secondary cold rolling and stress relief annealing. The strength and corrosion resistance of the Cu-Ni-Sn alloy are improved by adding a small amount of Al, Zn, Cr, Nb, Zr and other alloy elements and combining a multi-stage homogenization heat treatment process and a deformation heat treatment process.

Shaping and pruning method for balanced fruiting of oranges

The invention discloses an orange balanced fruiting shaping and pruning method which comprises the following steps: step 1, seedling selection and cultivation: selecting excellent orange seedling varieties through professionals and cultivating, step 2, orange seedling shaping and pruning: performing standardized planting on the selected seedlings, performing primary pruning, and performing secondary pruning; 3, pruning in the initial fruit period: reasonably pruning branches and buds of the citrus fruit trees in the initial fruit period to achieve the effects of early fruiting and early high yield. According to the citrus balanced fruiting shaping and pruning method, by conducting reasonable pruning and shaping on citrus fruit trees in different periods, multiple times of pruning and tip promoting are conducted in one year, and excellent fruiting mother branches are cultivated in an appointed mode, so that the stable and high yield can be achieved, the full bearing period is prolonged, ...

Dust collection device of lithium ion battery

The invention discloses a dust collection device of a lithium ion battery, and relates to the technical field of dust collection devices.The dust collection device comprises a main body, a dust collection mechanism is fixedly mounted at the top of the main body, one side of the dust collection mechanism is in through connection with a dust collection hose, and the other side of the dust collection mechanism is in through connection with a dust collection and filtration mechanism; the dust collection mechanism is connected with a dust collection head mechanism through a dust collection hose in a penetrating mode. The dust suction mechanism sucks air through the dust suction head mechanism and exhausts air through the dust collecting and filtering mechanism, so that dust, chippings and the like attached to the lithium ion battery are sucked through the dust suction head mechanism, the influence of impurities on a product is avoided, flexible movement is facilitated through universal wheels ...

Soil vertical section CO2 concentration monitoring system

The invention discloses a soil vertical section CO2 concentration monitoring system, and relates to the technical field of gas monitoring. The device comprises a main control computer, the main control computer is connected with a data analysis module and a gas monitoring module, the gas monitoring module comprises a protection cylinder, the inner wall of the protection cylinder is rotatably connected with a mounting shell, and the surface of the protection cylinder is provided with a rotation control assembly used for adjusting rotation of the mounting shell. A through groove is formed in the front face of the protection cylinder in a penetrating mode, vent holes are formed in the front face of the installation shell in a penetrating mode, and a plurality of partition plates are fixedly connected to the inner wall of the installation shell. Measurement can be carried out at any time according to requirements, so that the monitoring process is very flexible, the spatial variability generated ...

Equipment anti-lost management method

The invention relates to the technical field of equipment management, and discloses an equipment anti-lost management method, which is characterized in that an equipment manager grasps the current state and the imminent use condition of equipment in real time through an equipment management system, the equipment can still grasp the dynamic state of the equipment in real time when the equipment is transferred in different areas, and the equipment can be prevented from being lost through a use request of the management system. The equipment management system has the advantages that the equipment management personnel can also judge the distance from the equipment to the signal receiving point according to the received signal strength, and the distance is compared with the distance interval from each area to the signal receiving point in the database, so that the equipment management efficiency is improved. The possible area of the device is found, the tracking management capability of the ...

Spliced reflective display screen

The utility model relates to a spliced reflective display screen which comprises a first reflective display screen, a second reflective display screen, a first substrate and a second substrate, a panel of the first reflective display screen is attached to the front face of the first substrate, and a signal input assembly of the first reflective display screen is bent to the back face of the first substrate from one end face of the first substrate and fixed. A panel of the second reflection type display screen is attached to the front face of the second substrate, one narrow edge of the second reflection type display screen is higher than the second substrate, and an avoiding position is formed on the second substrate; the wide edge of the first reflective display screen and the narrow edge, higher than the second substrate, of the second reflective display screen are spliced together, and the bent end face, for the signal input assembly of the first reflective display screen, of the first ...

Heat energy management system for deep sea manned platform and fresh water circulation heating method

The invention relates to a heat energy management system for a deep sea manned platform and a fresh water circulation heating method.The heat energy management system comprises a fresh water circulation system and an improved full-station heating system.The fresh water circulation system comprises a fresh water pump, water cooling equipment, a shell-and-tube heat exchanger and a first temperature control three-way valve which are sequentially connected end to end; the output end of the first temperature control three-way valve is connected with a fresh water pump and a heat exchange water tank, the improved whole-station heating system comprises an electric hot water boiler, a hot water pump and a second temperature control three-way valve which are sequentially connected end to end, the output end of the second temperature control three-way valve is connected to a shell-and-tube heat exchanger, and the output end of the shell-and-tube heat exchanger is connected with a heating radiator ...

Display device of lithium ion battery

The invention discloses a lithium ion battery display device, and relates to the technical field of display devices.The lithium ion battery display device comprises a base, a supporting rod is fixedly mounted at the top of the base, a display frame is rotatably mounted at the top of the supporting rod, a fixing mechanism is fixedly mounted on the inner wall of the display frame, and a transparent partition plate is movably mounted on one side of the display frame. The display device can achieve a fixing effect on batteries of different sizes through the fixing mechanism, the compatibility is better, the transparent partition plate plays a role in protecting and isolating the displayed lithium ion batteries, the glass plate plays a role in protecting and does not affect the display effect, the lithium ion batteries cannot be directly touched by personnel, the safety is higher, and the display effect is better. The display flexibility of the display device is enhanced through the supporting ...

Multilayer spherical shell structure outboard heat exchanger for deep sea

The outboard heat exchanger comprises an outer shell and an inner shell which are arranged in an inner-outer sleeving mode and are of a spherical structure, and a fresh water flowing space is jointly formed between the inner wall face of the outer shell and the outer wall face of the inner shell; the fresh water flowing space is divided into two independent chambers by a partition plate, one chamber is communicated with the fresh water inlet, and the other chamber is communicated with the fresh water outlet; a plurality of heat exchange pipes are installed between the two cavities in a communicating mode and penetrate through the interior of the inner shell. The seawater inlet and the seawater outlet penetrate through the fresh water flowing space and then communicate the interior of the inner shell with the exterior of the outer shell to form a seawater flowing space; fresh water flowing in from the fresh water inlet exchanges heat with seawater flowing through the interior of the inner ...

Seasonal frozen soil cutting section pile-slab structure and construction method thereof

The invention discloses a seasonal frozen soil cutting section pile-slab structure and a construction method thereof, and relates to the field of railway roadbed reinforcement engineering. Comprising a steel fiber concrete sealing layer, an EPS insulation board, a graded broken stone foundation bed surface layer, waterproof geotechnical cloth, a cement improved silt foundation bed bottom layer, a bearing plate, a waste rubber improved silt layer, a plain concrete cushion layer and a cast-in-situ bored pedestal pile which are sequentially arranged from top to bottom. The characteristics of thaw collapse and freezing expansion of seasonal frozen soil can be effectively inhibited through a unique pile plate structure, and when the seasonal frozen soil is subjected to thaw collapse along with temperature rise in warm seasons, the waste rubber and cement improved silt layer subjected to compression deformation generates rebound deformation; and the reinforced concrete bearing plate at the upper ...

Nanometer fluorescent probe for specific gallbladder delivery as well as preparation method and application of nanometer fluorescent probe

The invention relates to the technical field of nano biological materials, in particular to a nano fluorescent probe for specific gallbladder delivery, a preparation method and application. The amphiphilic brush-shaped polymer nano fluorescent probe containing organic dye is prepared by synthesizing an organic dye monomer and carrying out block polymerization. The nano fluorescent probe prepared by the invention can be rapidly metabolized by the liver and stays in the gallbladder for a long time, and imaging and operation guidance of the gallbladder and the bile duct can be realized. Compared with clinically used indocyanine green (ICG), the prepared nano fluorescent probe for specific gallbladder delivery has the advantages that the preparation method is simple, the size regulation range is wide, the nano fluorescent probe has very good gallbladder enrichment characteristic and higher metabolic rate, has great clinical transformation potential, and is expected to replace ICG to become ...

Method for evaluating chlorine resistance of concrete in tidal range zone and splash zone in hot sea tide environment

The invention discloses a method for evaluating chlorine resistance of concrete in a tidal range zone and a splash zone in a hot sea tide environment. The method comprises the following steps: step 1, index selection; 2, judging the weight of the matrix; step 3, a membership function; and step 4, score calculation and grade division. According to the method, evaluation indexes are screened on the basis of actual engineering requirements and climate characteristics in a hot sea tide environment, the importance degrees of the evaluation indexes are compared pairwise through an analytic hierarchy process, the importance degree quantized value of each performance is obtained, the value range and grade division of a membership function are determined according to the actual engineering conditions, and the evaluation indexes are obtained. The comprehensive evaluation score of the chlorine resistance of the concrete in the tidal range zone and the splash zone in the hot sea tide environment is ...

Calibration method of multi-line multi-mode TRL based on tensor CPD

The invention provides a multi-line multi-mode TRL calibration method based on tensor CPD, and the method comprises the steps: S1, carrying out the CP decomposition of a tensor generated by a measurement matrix TxM, and obtaining a corresponding first error box T1, a propagation constant matrix, and a second error box T2; u (1), u (2) and u (3) are three rank 1 tensors obtained after CP decomposition of the tensor; s2, sorting the CP decomposition according to the physical significance of u (2); s3, extracting scaling brought by CP decomposition as a coefficient phi; s4, X and Y are solved according to the measurement result of the Thru standard component; and S5, solving according to a multimode TRL mode to obtain a real T parameter of the DUT. According to the multi-line multi-mode TRL calibration method based on the tensor CPD, inherent half-wavelength resonance in the TRL is reduced, and meanwhile the precision far higher than that of a traditional perturbation method is achieved.

Update pruning method for loquats

The method comprises the following steps: selecting adult loquat fruit trees which are tall, strong in upper part, weak in lower part, strong in outer part, weak in inner part, outward-moved in fruiting part, and bald and fruitless in inner part, and carrying out renewal pruning; the loquat trees with fruits harvested in the current year are updated and pruned in the first year; performing second-year updating pruning on the adult loquats subjected to the first-year updating pruning; third-year and later updating pruning is carried out on the loquat trees after updating pruning of the second year is completed; in the loquat updating and pruning process, the shoot length growing number and the growth amount are regularly measured; performing orchard soil, fertilizer and water management and pest control according to standardized requirements. According to the method, an inside-outside updating pruning mode is adopted, and the defects that branches are burnt and the yield is greatly reduced ...

Vehicle collision identification method and device

The invention provides a vehicle collision identification method and device, and the method comprises the steps: obtaining an acceleration signal and a piezoelectric signal of a vehicle; determining the running speed of the vehicle when the acceleration signal and the piezoelectric signal are obtained; determining a target signal in the first collision signal and the second collision signal based on the driving speed; the first collision signal is related to the acceleration signal; the second collision signal is related to the piezoelectric signal; and determining a collision recognition result of the vehicle based on the target signal. Therefore, the accuracy of the collision recognition result can be improved.