19results about How to "Prevent being" patented technology

The invention relates to a power data federated learning privacy protection method based on efficient homomorphic encryption. The method comprises the following steps: step 1, a client initializes a neural network model; step 2, the server side encrypts and updates local neural network model gradient parameters uploaded by the client side; 3, the server side executes gradient average aggregation operation, the server side does not need to decrypt, the encrypted gradient parameters uploaded by the client side are directly calculated, an average value is solved, and therefore global gradient parameters are updated; step 4, after each client receives the updated global gradient, carrying out decryption calculation operation; 5, loading the updated weight parameters of the neural network model into a local neural network model, and performing neural network model training by using a local data set; the problems that an existing encryption technology is large in operand, large in computing resource overhead and low in algorithm efficiency, and privacy leakage exists in the transmission and analysis process of power data can be solved.

The utility model relates to the field of automobile parking space fire fighting equipment, and particularly discloses an intelligent fire extinguishing device for an automobile parking space, which comprises a fireproof cover, a support, a fire fighting nozzle, a temperature sensor, a smoke sensor and a lifting assembly, the fireproof cover is fixedly mounted right above the parking space through the support, and an opening is formed in the bottom of the fireproof cover; the fire-fighting sprayer, the temperature sensor and the smoke sensor are all installed in the fireproof cover, the lower end of the fireproof cover is sleeved with a first fixing frame, the first fixing frame is connected with the lifting assembly and moves up and down under the action of the lifting assembly, when the first fixing frame makes contact with or gets close to the support, the fireproof cover is completely folded, and when the first fixing frame makes contact with the parking space, the first fixing frame moves up and down. The fireproof cover is unfolded, and a closed space is formed between the fireproof cover and the parking space. The fire-proof cover can be used for isolating a vehicle on fire from surrounding vehicles or equipment, fire spreading is avoided, meanwhile, a water pool can be formed in the fire-proof cover to immerse a battery, and the final fire extinguishing purpose is achieved.

The invention relates to the technical field of networking methods, in particular to an ad hoc network dynamic networking method and system based on an MAC layer, and the method comprises the steps: obtaining the topological relation information of each node in a network; obtaining distance information between the nodes; generating a topology sensing matrix based on the topological relation information; calculating a priority matrix according to the topology sensing matrix; evaluating the service capability of each node based on the priority matrix and the distance information; calculating the reliability of each node according to the service capability; based on the reliability, time slots are distributed for all the nodes; generating a routing optimization matrix according to the priority matrix, the reliability and the distance information; the priority, the service capability, the reliability, the time slot allocation result and the routing optimization information of each node are output, and by introducing an innovative priority matrix calculation method, the direct connection relationship of the nodes is considered, and the positions and the influence of the nodes in the whole network are captured, so that the network resource allocation is more reasonable, and the routing optimization efficiency is improved. And the overall throughput of the network is obviously improved.

The utility model relates to the field of automobile fire-fighting equipment, and particularly discloses a movable automobile intelligent fire extinguishing device which comprises a fireproof cover, a fire-fighting sprayer, two lifting assemblies and a telescopic arm, the bottom of the fireproof cover is provided with an opening, the lower end of the fireproof cover is provided with a lower fixing frame, and the upper end of the fireproof cover is provided with an upper fixing frame. The bottom of the fireproof cover is connected with the lower fixing frame, the top of the fireproof cover is connected with the upper fixing frame, the fireproof cover is driven by the lifting assemblies to be folded on the lower fixing frame or unfolded to form a closed space, the telescopic arm is located between the two lifting assemblies, and the two ends of the telescopic arm are connected with the lower fixing frame and the fire fighting truck respectively. The fire-proof cover is combined with a fire fighting truck, the fire-proof cover can be used for isolating an on-fire automobile from surrounding automobiles or equipment, fire spreading is avoided, meanwhile, a water pool can be formed in the fire-proof cover to immerse a battery, the final fire extinguishing purpose is achieved, and compared with a water gun fire extinguishing mode, the fire extinguishing efficiency can be improved, and fire extinguishing safety can be ensured; and water resources are greatly saved.

The invention relates to the technical field of beer production equipment, and discloses beer production fermentation equipment which comprises a supporting mechanism, the supporting mechanism comprises a fermentation bin, a first fixing block is fixedly connected to the outer surface of the bottom of the fermentation bin, and supporting legs are fixedly connected to the outer wall of the bottom of the first fixing block; a discharging pipe is fixedly connected to the outer wall of the bottom of the fermentation bin, a connecting rod is fixedly connected to the outer surface of the discharging pipe in a sleeving mode, when fermentation liquor is stirred in beer production, a first motor drives a first rotating shaft to enable a first fixing frame to rotate in the reverse direction, first stirring blades conduct reverse stirring on the upper end portion of the fermentation liquor accordingly, and therefore the fermentation liquor is stirred in the beer production process. The acting force of the first stirring blade and the second stirring blade can be mutually counteracted to a certain extent, so that the surface of the fermentation liquid is more stable, the generation of foams is reduced, the bacterial contamination risk increased by the foams can be avoided, and the finished product quality of beer can be improved.

The application discloses a storage cabinet and an energy storage device, and relates to the technical field of fire fighting, wherein the storage cabinet comprises a cabinet body and at least one shell assembly, at least one first cavity is arranged in the cabinet body; the shell assembly is arranged in the first cavity, and the inside of the shell assembly is provided with a second cavity for mounting a battery structure; the first end of a first gas flow channel of the shell assembly is communicated with the first cavity, and the second end of the first gas flow channel is communicated with the outside of the cabinet body; a rotatable baffle structure is arranged in the first gas flow channel, and the baffle structure is used for shielding the first gas flow channel; the third end of a second gas flow channel is communicated with the first cavity, and the fourth end of the second gas flow channel is communicated with the inside of the shell assembly; the outer surface of a plugging piece is abutted against the inner wall surface of the second gas flow channel; the battery structure presses the first elastic piece to move the plugging piece towards the second end of the second gas flow channel and form a gap. The technical scheme provided by the application controls the oxygen concentration in the first cavity, so that the fire extinguishing efficiency is improved.

The utility model provides a disinfection water supply system for domestic water of a protective project, and aims to solve the problem that the water quality of stored water in the traditional protective project becomes poor due to municipal secondary transportation and avoid the hidden danger that the water in the protective project may become dead water due to long residence time. The system mainly comprises a domestic water tank, a variable-frequency water supply system and a circulating dosing system, after the water storage tank is put into use, the circulating pump is operated regularly, so that water is prevented from becoming stagnant water due to overlong retention time in the water tank, and the activity of stored water is remarkably improved. The short flow influence is reduced by cooperating with the stainless steel flow guide plate, and after the circulating water enters the water tank, a rotational flow preventing device is arranged in the vertical direction by the inner wall of the tank, so that the circulating water has an ideal plug flow state in the horizontal and vertical directions; the chlorine disinfectant is adopted for secondary disinfection, the concentration of the disinfectant in the tank is detected by the residual chlorine detection device at any time, and the disinfectant is added along with the residual chlorine detection device, so that the problem of poor water quality caused by secondary transportation is solved.

The application relates to the dispensing technical field, in particular to a barrier-avoiding dispensing method based on machine vision, which comprises the following steps: step 1, visual identification generates a dispensing model, an analysis unit determines the angle of a workpiece, and the dispensing model is corrected; step 2, dispensing parameters are determined according to the measured value of a balancing machine; step 3, single-process conditions of a dispensing mechanism are determined, a new dispensing process is generated, and dispensing is carried out; step 4, the dispensing mechanism is adjusted to enter the next dispensing process; step 5, the dispensing mechanism is controlled to carry out dispensing of the quality-minimal dispersion correction point, and the dispensing process of the dispensing mechanism is determined again; step 6, the dispensing mechanism is corrected according to the deviation quality condition of any dispensing process; and step 7, all dispensing processes are completed, the dispensing cylinder is reset, and the workpiece generates a dispensing finished product after a certain curing time. The application improves the qualified rate of dispensing finished products by carrying out barrier-avoiding algorithm processing on the dispensing process.

The invention relates to the technical field of ships, and provides a liquid hydrogen transport ship cargo hold vacuum heat insulation system which comprises a liquid hydrogen cargo hold, a vacuum layer, a cargo hold compressor, a vacuum pump, a fuel compressor, a temperature control system, a power device, a gas sensor, a one-way valve, an electromagnetic valve and a monitoring device. According to the method, external air permeating into the vacuum layer in the vacuum layer or hydrogen leaked into the vacuum layer by the liquid hydrogen cargo hold in the vacuum layer is constantly pumped through the vacuum pump, so that the vacuum layer is always kept at a relatively high vacuum degree, a good heat insulation effect is achieved, and BOG (Boil Off Gas) in the liquid hydrogen cargo hold is reduced. In addition, through cooperation of the gas sensor, the vacuum pump and the monitoring device, the leakage problem of the vacuum layer can be monitored at any time, corresponding emergency treatment measures are taken, and good practicability is achieved.

The invention relates to an HRRP automatic target identification method based on data physical joint driving. Comprising the following steps: firstly, carrying out denoising and normalization preprocessing on obtained original HRRP data to obtain standardized HRRP input data; inputting the standardized HRRP input data into a data driving branch and a physical driving branch in parallel to obtain a data feature vector and a physical feature vector respectively, and reconstructing loss constraint physical consistency through a reconstruction module; then, inputting the data feature vector and the physical feature vector into a feature fusion module based on an attention mechanism to obtain a fusion feature vector, and inputting the fusion feature vector into a classification layer to output a target category probability; in the training stage, a multi-task loss function is adopted to carry out end-to-end optimization, so that the recognition precision, robustness and physical interpretability are considered under the complex conditions of low signal-to-noise ratio, view angle change and the like. According to the method, the interpretability of the model decision process can be effectively improved, and the accuracy and robustness of HRRP target recognition and the model interpretability are remarkably improved.

The invention relates to the technical field of bathroom accessories, in particular to a sterilization toilet stool which comprises a toilet stool body, a water tank, a water inlet valve and a water outlet valve, the water inlet valve and the water outlet valve are arranged in the water tank, the water inlet valve is provided with a water supplementing pipe, the water outlet valve is provided with an overflow pipe, and the water supplementing pipe is connected to the overflow pipe to supply water to the toilet stool body through the overflow pipe to form water seal; the sterilization device further comprises a sterilization gas supply device which comprises a gas inlet pipe for sterilization gas to penetrate through, the gas inlet pipe is connected to the overflow pipe, and the sterilization gas supply device is used for supplying the sterilization gas to the overflow pipe through the gas inlet pipe. Therefore, the sterilizing gas and the water from the water replenishing pipe converge and are mixed to supply sterilizing water to the toilet bowl body. Sterilization water is supplied to the sewage discharging cavity of the toilet bowl body through the flushing water channel, so that the flushing water channel and the sewage discharging cavity of the toilet bowl body are sterilized, bacteria are prevented from breeding in the toilet bowl body, and the toilet bowl is prevented from becoming a pollution source of germs.

[Subject] The subject of the present invention is to solve the problems existing in the prior art, that is, to provide a shielding body that does not produce a through gap, that is, can suppress the leakage of neutron rays, and a radioactivity suppression structure using the shielding body. [Solution] The shielding body of the present invention is a shielding body that suppresses the radioactivity of the wall body in the neutron generation room, and is a shielding body formed by a plurality of plate-like panels. The plate-like panel is composed of an n-gonal upper surface (n is a natural number greater than 3), an n-gonal lower surface, and n side surfaces, and is a shape in which the upper surface and the lower surface are arranged approximately in parallel (including parallel), and the side surface is formed by a slope surface inclined relative to the upper surface. Moreover, the side surface of the plate-like panel is butted against the side surface of other plate-like panels, and is assembled in a planar shape by joining two adjacent plate-like panels in a state in which parts of the panels overlap each other.

The application discloses a discharge detection device and method for a general high-low voltage switch cabinet for mines, and belongs to the technical field of switch cabinet detection. The device comprises a modularized sensor assembly, a signal acquisition unit, an edge computing node unit and an upper monitoring platform, and adopts a UHF sensor, an ultrasonic sensor and a transient ground voltage sensor for cooperative detection. The method comprises multi-source signal synchronous acquisition, adaptive denoising based on a sparrow search algorithm optimization, double-domain feature extraction, discharge type identification based on an attention-enhanced convolutional neural network, and multi-sensor information fusion and hierarchical early warning based on evidence theory. The application compensates for the blind area of a single detection method through cooperative work of multiple types of sensors, improves the denoising effect through adaptive parameter optimization, enhances the recognition accuracy through double-domain features and an attention mechanism, and improves the diagnosis reliability through multi-sensor fusion, so that accurate detection and intelligent diagnosis of local discharge of a mine switch cabinet are realized.

The invention relates to the technical field of H acid preparation, in particular to a process for producing H acid through alkali fusion in an ammonia environment. The amino T acid can generate a chromotropic acid byproduct during alkali fusion, the chromotropic acid is formed by replacing amino of H acid with hydroxyl, and hydroxyl on a naphthalene ring can generate amino under the catalysis of sulfite, so that the chromotropic acid can generate H acid in an ammonia environment. Alkali fusion is carried out in an ammonia environment, so that generation of chromotropic acid in alkali fusion side reaction can be effectively inhibited, the yield of H acid is increased, the yield of H acid can be increased to about 85% in terms of amino T acid, and the cost is effectively reduced.

This invention relates to a novel phosphorus-fluorine curing agent for phosphogypsum and its preparation method, belonging to the technical field of industrial solid waste treatment and resource utilization. The curing agent of this invention comprises slag powder, anhydrous sodium sulfate, water glass, water, sodium hydroxide, and a Fe3O4@SiO2@Zr-Al bimetallic oxide stabilizer. The Fe3O4@SiO2@Zr-Al bimetallic oxide stabilizer has a core-shell structure, with magnetic iron oxide particles as the core, and an amorphous silica protective layer and an active layer sequentially coating the surface of the magnetic iron oxide particles. The active layer is an amorphous, porous network structure of zirconium-aluminum bimetallic oxide. The preparation method of the curing agent of this invention is simple, mild, and easy to industrialize. The main raw material is industrial solid waste slag, achieving "waste treatment with waste," with a small amount of agent added and low overall treatment cost.

The utility model discloses a feeding device used after polymerization reaction in a polymerization kettle, and relates to the technical field of polymerization reaction, the feeding device comprises a feeding device, the feeding device comprises an operation cylinder, a speed reducing motor, a magnetic vibrator, a feeding pipe, a vacuum pipe, an auger and a connecting flange, the inner hollow section of the operation cylinder is equal to the outer ring section of the auger in size, and the outer ring section of the auger is connected with the speed reducing motor. The bottom end of the gear motor is connected with the axis of the top face of the magnetic vibrator, the feeding pipe and the vacuum pipe are installed on the positions, close to the top end, of the two side faces of the operation cylinder respectively, and the feeding pipe and the vacuum pipe are communicated with the interior of the operation cylinder. The vacuum pipe is connected with a vacuum machine, oxygen fed by the feeding pipe together can be extracted in time, polymer oxidation is effectively controlled, the polymer is prevented from becoming waste, the bottom end of the auger and the bottom opening of the connecting flange are located on the same horizontal line, materials can be completely discharged conveniently, and the feeding efficiency is improved.

The utility model provides a material cleaning device. The material cleaning device comprises a bottom frame, the purging piece is arranged on the bottom frame; the rotating assembly comprises a driving part and a rotating part, the rotating part is rotatably arranged on the bottom frame around the vertical rotating axis, the driving part and the rotating part are in driving connection to drive the rotating part to rotate, the rotating part is provided with a material placing position, and an air outlet of the blowing part faces the material placing position. Through the technical scheme provided by the invention, the problems that the dust removal effect on the tank body and the cover body is poor and the use experience of a user is influenced due to the fact that a dust removal fan is used for directly removing dust on the surfaces of the tank body and the cover body and only cleans one side of the tank body and one side of the cover body in the related technology can be solved.

The spray tower comprises a tower body, an air outlet is formed in the upper end of the tower body, a spray assembly is arranged in the tower body, a plurality of air inlet barrels are connected to the lower end of the tower body, the upper ends of the air inlet barrels are communicated with the interior of the tower body, a liquid outlet is formed in the lower end of each air inlet barrel, and a liquid outlet is formed in the lower end of each liquid outlet. An air inlet is formed in the side surface of the air inlet cylinder; the lower side of the air inlet cylinder is provided with a liquid sealing funnel capable of conducting liquid sealing on the liquid outlet. A heat absorption assembly is arranged in the air inlet barrel. The tower body and the air inlet barrel can discharge the spraying liquid in time, the spraying liquid cannot be accumulated, the heated spraying liquid is prevented from becoming a heating source, and secondary pollution caused by water vapor formed by the accumulated spraying liquid is avoided; the heat absorption assembly in the air inlet barrel can be used for cooling high-temperature waste gas; the heat absorption assembly can stir the liquid seal chamber while rotating, and the problem that a liquid outlet in the lower end of the air inlet barrel is blocked due to impurity deposition in the liquid seal chamber is solved.

The present invention discloses a box-type waste recovery method and system for a hospital, comprising: a waste temporary storage device for receiving waste generated on each floor of a hospital collected in the form of a waste transfer box; a waste delivery terminal, which is arranged corresponding to the waste temporary storage device and is used to receive and disinfect the waste collected by the waste temporary storage device; a waste transmission channel system, which is used to transmit the waste processed by the waste delivery terminal to a sorting station; a waste sorting warehouse, which is used to receive the waste transmitted by the waste transmission channel system and to sort and store it; and a garbage transport vehicle, which is used to transport the waste sorted by the waste sorting warehouse. The present invention has high single transmission efficiency and realizes automatic distinction of small categories, so that waste classification is more detailed and waste treatment is safer, and the entire process is basically automated, which reduces the contact between operators and waste, thereby ensuring the health of operators and reducing labor costs, and is suitable for promotion.