81results about How to "Avoid direct access" patented technology

The embodiment of the invention discloses an RAG data query method and device based on privacy protection, equipment and a medium. The scheme can comprise the steps of obtaining a data query request provided by a query party; obtaining target data from the database based on the data query request; processing the target data by adopting a large model of a model party according to a preset privacy protection mode to obtain a query result; the preset privacy protection mode is used for preventing the target data from being leaked to the model party; and feeding back the query result to the query party.

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 invention relates to the technical field of dryers, in particular to a control system of a variable-frequency refrigerated dryer, which is composed of the following three controls: superheat degree adjustment, dew point temperature adjustment and protection mechanism through an electronic expansion valve, low-frequency pre-operation of the dryer after the dryer is started, and operation of a compressor according to a set lower limit frequency. The electronic expansion valve adjusts the degree of superheat, specifically, when the degree of superheat is higher than a target value after pre-operation, the opening degree of the electronic expansion valve is increased, and when the degree of superheat is lower than the target value, the opening degree of the electronic expansion valve is reduced, and the degree of superheat reaches a constant range, the electronic expansion valve stops adjusting at the moment. The variable-frequency refrigeration dryer can dynamically balance the high pressure and the low pressure of a refrigerant system, enables the frequency and the dew point of compressed air to be stable, ensures that equipment is kept in a safe working range under various operation conditions, and not only improves the reliability of the system, but also prolongs the service life of the equipment through the protection mechanism.

The invention discloses a symmetric searchable encryption method and device with a hidden search mode, equipment and a medium, and relates to the technical field of data retrieval, and the method comprises the following steps: obtaining an encrypted document uploaded by a data owner and a corresponding security index, respectively converting the security index into a corresponding first vector and a corresponding second vector through a bloom filter and a confusion bloom filter of the cloud server; when a keyword query vector sent by a data user is received, performing matching calculation on the first vector, the second vector and the keyword query vector based on a preset homomorphic encryption algorithm and the homomorphic encryption public key to obtain a corresponding matching calculation result; and sending a matching calculation result to the data user, so that the data user decrypts the matching calculation result by using the homomorphic encryption private key to obtain a corresponding first vector dot product result and a corresponding second vector dot product result, decrypting the first vector dot product result and the second vector dot product result by using the pseudo-random encryption shared key, and sending the decrypted result to the data user. And obtaining a corresponding plaintext document identifier set containing the keyword.

The utility model relates to the technical field of screening, and discloses an automatic screening device which comprises a feeding hopper, a screening bin, a material conveying pipe and a storage bin, the feeding hopper is inserted into the screening bin, the material conveying pipe is inserted into the bottom of the screening bin, the storage bin is installed at the bottom end of the material conveying pipe, the screening bin is provided with a feeding port, and a movable groove is formed in the feeding port. Raw materials are screened in advance, so that large particles are prevented from directly entering mixing equipment, the risk of damage and blockage of the equipment can be effectively reduced, the equipment can more effectively separate the particles and improve the screening efficiency in a vibration or rotation mode in combination with the screening net and the screening holes, and the screening efficiency is improved. Waste left on the screening net can be removed through the scraping assembly, the screening net can be kept clean, the screening effect and stable operation of equipment are ensured, an operator can conveniently control movement of a scraping plate and adjust the screening effect according to needs by arranging a control crank, and operation flexibility and convenience are improved.

The present application discloses a data query method, device, equipment, storage medium and program product, and relates to the field of data processing technology. The method comprises: reading a preset configuration text, determining a target database table and a target field; performing a decimal conversion on a target field content text of each target database table to obtain a first content text, storing it in a first high-efficiency bitmap to form a second high-efficiency bitmap, counting the number of counts of each character in the target field and storing it in association with the database table, and sending the second high-efficiency bitmap to a server; receiving and parsing an external operation instruction, obtaining the target character, querying the second high-efficiency bitmap corresponding to the target character in the server to obtain the target high-efficiency bitmap; determining a final target database table based on the target high-efficiency bitmap; using an nl2sql neural network model to convert the operation instruction into a query statement, querying the final target database table to obtain the target data. The present application can improve the efficiency of data query.

This utility model provides a welding fume purification and collection device for metal products. The device includes a housing, a filter assembly, a pipe body, an air inlet hood, and a pre-filtration mechanism. The filter assembly, housed within the housing, includes a fan, a filter element, and a telescopic pipe. The fan's input end is connected to the filter element, and the other end of the filter element is connected to the telescopic pipe, which communicates with the pipe body. The pre-filtration mechanism is located within the telescopic pipe. This device relates to the field of welding fume treatment. By incorporating a pre-filtration mechanism within the telescopic pipe, this utility model effectively filters and intercepts large-sized impurities carried in the welding fume before it enters the filter element, preventing these impurities from directly entering the filter element. This significantly reduces the risk of filter element clogging and damage, extends the filter element's service life, and reduces maintenance and replacement costs.

The invention discloses a wall-mounted distribution box with a moisture-proof effect, and relates to the technical field of power equipment, the wall-mounted distribution box comprises a distribution box body, a ventilation mechanism, a trigger mechanism and a ventilation fan, a mounting groove is formed in the distribution box body, a mounting plate is fixedly connected in the mounting groove, and a power distributor is detachably mounted on the distribution box body through the mounting plate. Gear-driven ventilation mechanisms are arranged on two sides of the distribution box body, a trigger mechanism is arranged between the mounting plate and the distribution box body, and the distribution box body is movably connected with a cabinet door at a notch of the mounting groove; when the cabinet door is closed, the surface of the cabinet door makes contact with the knocking block to generate knocking action, the knocking enables the fixing rod to move downwards, the top plate in the transmission groove moves along with the fixing rod, the movement of the top plate can cause rotation of the eccentric wheel and push the trigger block to move downwards, the trigger block is matched with the touch switch, and the touch switch is triggered. The touch switch controls the ventilation fan to be started or stopped so as to achieve the air circulation and ventilation functions.

The utility model discloses an electromagnetic heating humidifier which comprises a shell, an electromagnetic heating device, an electromagnetic heating device, an electromagnetic heating device, an electromagnetic heating device and an electromagnetic heating device. The middle of the shell is provided with a containing box, and the bottom of the containing box is provided with a plurality of hanging pins and connecting pins. The electromagnetic heating assembly is arranged in the shell and located below the containing box. The water tank is detachably arranged in the accommodating box; the base plate is arranged at the bottom of the shell, the weight of the humidifier acts on the base plate through butt joint and fixation of the connecting columns and the connecting feet, the base plate is provided with a weighing sensor, and the weighing sensor is electrically connected with the circuit board. According to the utility model, the weighing sensor is used for indirectly monitoring the water quantity, the signal interference of a magnetic conductive material to the sensor is avoided, the compatibility problem of the detachable water tank and electromagnetic heating is solved, the balance between the convenient cleaning of the detachable water tank and the electromagnetic heating efficiency is realized, and the installation limitation of the sensor is avoided through indirect weight detection; the rigid connection structure ensures the pressure measurement precision and effectively reduces the risk of dry burning.

This invention belongs to the field of lithium-ion battery electrolyte material preparation technology, and provides a solid lithium hexafluorophosphate with low fine crystal content and its preparation method. The preparation method involves adding lithium fluoride to anhydrous hydrogen fluoride to form anhydrous hydrogen fluoride slurry. A portion of the anhydrous hydrogen fluoride slurry and phosphorus pentafluoride gas are fed into a primary continuous reaction crystallizer. The resulting slurry is subjected to low-temperature fractionation to form a first stream and a second stream. The second stream enters a secondary continuous growth crystallizer and continues to react with phosphorus pentafluoride gas, followed by solid-liquid separation to obtain a solid wet product and mother liquor. The first stream, another portion of the anhydrous hydrogen fluoride slurry, and a portion of the mother liquor enter a pre-conditioning section, and the resulting pre-conditioned stream is returned to the feed end of the primary continuous reaction crystallizer. The solid wet product is then subjected to low-temperature washing and programmed vacuum drying to obtain the final product. This method, through the combination of fractional reflux, mother liquor participation in pre-conditioning, and continuous growth processes, reduces fine crystal entrainment and improves particle size distribution stability.

The invention provides a password device discovery method and a computer device, and relates to the technical field of password application. The method comprises the following steps: responding to an access event triggered by a software application on a current password device, obtaining device feature information of the current password device in multiple dimensions, generating device fingerprint information of the current password device according to the device feature information in multiple dimensions, and sending an access request to a server of the software application according to the device fingerprint information, the access request is used for enabling the server to detect the equipment fingerprint information by adopting an equipment fingerprint detection algorithm according to a preset equipment fingerprint database to obtain a fingerprint detection result of the current password equipment, receiving a first access response sent by the server, and sending the first access response to the server; the first access response is an access response triggered when the server determines that the current password device is the registered password device. Complicated and unique equipment fingerprint information is generated through multi-dimensional equipment feature information, and omnibearing and high-precision identification of the identity of the password equipment is realized.

The utility model relates to the technical field of autoclaved fly ash green brick drying, and discloses an autoclaved fly ash green brick drying device which comprises a drying box and a cooling box, a filter cartridge is fixedly arranged at one end, close to the cooling box, of an exhaust pipe, a filter element is embedded in the filter cartridge, a spiral copper pipe is installed in the cooling box, and the spiral copper pipe is fixedly connected with the drying box. According to the waste gas cooling device, impurities contained in waste gas are filtered and intercepted through the filter element firstly, then the waste gas enters the spiral copper pipe in the cooling box, cooling water is driven by the circulating pump to surround the spiral copper pipe, the cooling water is cooled through the cooling water, and the waste gas is cooled through the cooling water. The heated cooling water can flow into the cooler to be cooled, then flows back into the cooling box to be recycled and is conveyed and distributed into the multiple sets of U-shaped hot air pipes through the air distribution pipes, hot air flow is jetted out in multiple directions, it is guaranteed that all the surfaces of each brick can make contact with hot air in cooperation with the multiple layers of trays, drying dead corners are avoided, and the drying efficiency is improved.

The utility model relates to a filtering device capable of realizing reliable sealing, which comprises a cylindrical shell and a filter element assembly, an exhaust port is arranged at the center of an upper cover of the cylindrical shell, and air inlets are respectively arranged on two sides of the lower part of the cylindrical shell. According to the technical scheme, the filter element assembly comprises an annular filter element with the bottom sealed, an annular rubber mat arranged on the top face of the annular filter element, a filter element gland arranged on the upper surface of the annular rubber mat and a transition connecting pipe arranged in the center of the filter element gland, a plurality of fixing pieces are arranged between the filter element gland and the annular filter element, and a suspension piece is arranged between the filter element gland and the upper cover; a flange plate is arranged at the upper end of the transition connecting pipe, a concentric groove is formed in the upper surface of the flange plate, a sealing rubber ring is arranged in the concentric groove and makes close contact with the inner top face of the upper cover, the transition connecting pipe is communicated with the exhaust port of the upper cover, and the sealing rubber ring wraps the outer side of the inner end of the exhaust port. The device is good in sealing performance, prevents impurity-containing gas from being directly discharged into follow-up vacuum equipment, ensures the safety of the follow-up vacuum equipment, and remarkably improves the filtering efficiency at the same time.

The invention discloses a separated data hardware access encryption device, and relates to the technical field of computer security hardware and data encryption, and the key points of the technical scheme are as follows: a host control module is used for carrying out encryption operation on write-in data and / or carrying out decryption operation on read data; the control on the data flow is realized through a first hardware data link with a switch; the system storage module is used for storing the encrypted data through a storage hardware medium and controlling the data flow through a second hardware data link with a switch; and the information management module is used for generating key information according to the input configuration information. The encryption and decryption function and the data storage function are physically separated, it is ensured that encryption and decryption operation is conducted in a special hardware module, data storage is conducted on an independent hardware medium, and the risk that data are directly accessed and cracked in the storage process is effectively avoided through the design.

The utility model belongs to the technical field of sealant high-temperature-resistant testing devices, and discloses a sealant high-temperature-resistant testing device which comprises a testing box, a sliding groove is formed in the bottom end face of the testing box, a two-way lead screw is rotationally connected into the sliding groove, a pair of sliding blocks are connected to the two ends of the two-way lead screw in a penetrating mode, and supporting blocks are installed at the top ends of the pair of sliding blocks. Tension sensors are mounted on one sides of the upper ends of the pair of supporting blocks, mounting blocks are mounted on one sides of the tension sensors, grooves are formed in one sides of the mounting blocks, threaded grooves are formed in the tops of the grooves, screw rods are in threaded connection with the interiors of the threaded grooves, clamping blocks are mounted at the bottom ends of the screw rods, and a heating plate is mounted in the middle of the top of the test box. According to the device, the sealant can be tested in a high-temperature state, the detection comprehensiveness is improved, the time for waiting for equipment cooling can be shortened, the working efficiency is improved, meanwhile, air in the testing device can be purified, and the environmental protection performance of the device is improved.

This invention discloses a dust removal device used in the battery recycling process, relating to the field of dust removal equipment technology. It includes: a reaction dust removal unit comprising a reaction component mounted on a fixed support, a guide component inside the reaction component, a recycling component at the bottom of the guide component, and a water curtain component on one side of the recycling component; a conical tank on the fixed support; a connecting pipe on one side of the conical tank; a buffer component inside the conical tank; a return spring inside the buffer component; and a push plate at the other end of the return spring, with the push plate slidably connected to the buffer component. After dust and harmful gases enter the reaction component, they impact the buffer component for cushioning and guidance. The water curtain component draws ammonia water from the recycling component and sprays out three layers of water curtain. After the dust and gases impact the water curtain, they come into large-area contact with the ammonia water, causing the harmful gases to react, lowering the temperature, and adsorbing large heavy metal particles which fall into the recycling component. The ammonia water is filtered and recycled.

The utility model discloses a novel drying furnace double air seal structure which comprises a drying furnace chamber body, a first air curtain air port device and a second air curtain air port device are respectively arranged on the inner side of the drying furnace chamber body, and a first folding plate, a second folding plate and a third folding plate are arranged between the first air curtain air port device and the second air curtain air port device in a crossed mode. By means of the structure, the double-air-seal structure is composed of the two sets of air curtain air opening devices and the multiple folded plates, the double-air-seal structure is installed at the top of the drying furnace chamber body, meanwhile, external cold air is prevented from directly entering the drying furnace, the second air curtain air opening device and the first folded plate form the backflow cavity, hot air overflowing is further reduced, and the drying efficiency is improved. The first baffle and the second baffle block hot air possibly appearing at the bottom and the top from overflowing correspondingly, hot air returns to the heating device through the air return opening, and hot air circulation is formed. A double-air-seal structure is adopted, overflowing of hot air in the drying furnace and direct entering of cold air outside the furnace into the furnace are reduced, and the temperature in the furnace is maintained to be stable to the maximum extent.

The present application provides a remote identity authentication method, apparatus, device and storage medium, the method comprising: after the terminal device obtains an obfuscation sequence from a server, the facial data of the user to be authenticated is filled according to the obfuscation sequence to generate the filled facial data. Then, the facial data of the user to be authenticated is filled according to the obfuscation sequence to generate the filled facial data. After that, the facial data is processed to obtain a verification value. Finally, the verification value is filled into a preset position of the filled facial data to generate target facial data, and the target facial data is sent to the server. In this solution, since the data transmitted by the terminal device to the server is filled, it is prevented from the attacker being able to directly obtain the original data when the data is leaked, and the server can verify whether the target facial data has been tampered with according to the verification value carried in the target facial data, thereby further ensuring data security.

The invention relates to the technical field of artificial intelligence information security, in particular to an artificial intelligence information processing method, which comprises the following steps of: distributing a simulation role in a corresponding permission range according to received login information of a user; receiving access information of a user; retrieving data corresponding to the access information in a database according to the access information; respectively sending out an alarm prompt, sending out an interception prompt or starting a defense mode according to the access information; tracking access path information of the simulation role in the virtual host, judging that the simulation role belongs to false retrieval or vulnerability attack, and repairing the vulnerability; constructing a next virtual host and inputting virtual information; by adopting the method, the received access information of the user is analyzed to judge whether the information which the user intends to access belongs to the user permission range, and the accuracy of analyzing the access information is effectively improved by counting the occurrence frequency of the sensitive words, so that the user experience is improved. And the security and practicability of artificial intelligence information processing are further improved.

The application provides an engine crankcase ventilation system, comprising a cylinder head, a cylinder head exhaust chamber of the cylinder head being communicated with a cylinder head exhaust chamber of the crankcase through a cylinder head internal oil gas return channel, a first crankcase internal oil gas return channel, a second crankcase internal oil gas return channel, a third crankcase internal oil gas return channel, a fourth crankcase internal oil gas return channel, an oil pan exhaust chamber of an oil pan and the cylinder head exhaust chamber; the cylinder head exhaust chamber is communicated with a transmission case exhaust chamber of a transmission case, a crankcase longitudinal separation channel and a flywheel housing upper horizontal oil gas channel at a free end; the cylinder head exhaust chamber is communicated with a flywheel housing exhaust chamber of a flywheel housing, a flywheel housing internal vertical oil gas channel, a flywheel housing upper horizontal oil gas channel, a breather and a flywheel housing oil return channel at a transmission end; and the breather oil return channel is communicated with the oil pan exhaust chamber. The engine crankcase ventilation system effectively reduces breather separation pressure, reduces oil consumption and air pollution.

The utility model relates to the technical field of battery packs, and discloses a heat dissipation structure of a battery pack, which comprises a battery pack side air port cover plate mounted in a side air port on the side of the battery pack, the battery pack side air port cover plate is wave-shaped, connecting fixing rods are arranged at two ends and the middle of the battery pack side air port cover plate, and the battery pack side air port cover plate is mounted in the side air port in an embedded manner. Side face connecting holes matched with the connecting fixing rods are formed in the side face air openings, and the ventilation grooves in the battery pack side face air opening cover plates are embedded into the side face air openings and communicate with the interior of the battery pack. The cover plate is additionally arranged at the tuyere, the cover plate is made into a hidden window structure, convection can be formed between the cover plate and the tuyere at the bottom, heat on the surface of the battery cell is taken out, the battery pack is cooled, rainwater or dust can be prevented from directly entering the battery pack, and the device is simple in structure, good in heat dissipation effect and attractive in appearance. The side air port cover plate of the battery pack is wave-shaped, one side of the air port cover plate is a ventilation groove, and the other side of the air port cover plate is a position fixing groove, so that the device is more convenient to install, smooth in ventilation and simpler in structure.

The utility model provides a battery pack. The battery pack comprises a box body, the battery module is arranged in the box body; the battery module comprises a plurality of battery cells arranged in an array, and at least one side of each battery cell is provided with an anti-explosion valve; the pressure relief assembly comprises a first pressure relief piece and a second pressure relief piece, the first pressure relief piece is arranged on one side of the battery module in the first direction, and the second pressure relief piece is adjacent to the first pressure relief piece and is arranged on one side of the battery module in the second direction; wherein the first pressure relief piece is provided with a first pressure relief channel, the second pressure relief piece is provided with a second pressure relief channel, the first pressure relief channel and the second pressure relief channel are communicated in a sealed mode, and the anti-explosion valve is oppositely communicated with the first pressure relief channel. The pressure relief substance of the explosion-proof valve is sprayed into the first pressure relief channel and flows along the second pressure relief channel, so that pressure relief guide is performed on the pressure relief substance, the pressure relief substance is prevented from directly entering the box body, the influence of the pressure relief substance on an electric device is reduced, and the safety performance of the battery pack is improved.

The utility model discloses a material conveying and distributing system which is composed of a first material horizontal conveying device and a second material horizontal conveying device which are perpendicular to each other in a horizontal plane, and a material vertical lifting device is arranged at the feeding end of the first material horizontal conveying device. Material mixing equipment is arranged at the lower end of the material vertical lifting equipment; a first inserting plate control valve and a second inserting plate control valve are arranged on one side of the second material horizontal conveying device, and the two material horizontal conveying devices are installed in the upper portion of the production workshop through device hanging brackets and device supporting frame bodies. When the device is used for transferring materials instead of a forklift, the forklift operator can be effectively prevented from directly contacting harmful gas in the closed space of the fermentation tank, heat loss of the closed space of the fermentation tank can be reduced by low-temperature operation in winter, leakage of harmful gas such as odor is reduced, odor collection is facilitated, and the recovery processing capacity of deodorization equipment is reduced.

The double-air-hole angled high-reliability pilot valve with the dustproof boss comprises a valve cover (1) and a cover column (2) integrally formed with the valve cover, two inclined air holes (3) inclining downwards are symmetrically formed in the side wall of the cover column, and the dustproof boss (4) expanding outwards is arranged at the outlet end of each inclined air hole. The utility model has the beneficial effects that: a redundant double-hole structure is adopted; symmetrical double holes ensure that the exhaust function is still maintained when a single hole is blocked, and the anti-blocking reliability is improved by more than 200%; by means of the gravity self-drainage principle, rainwater cannot flow back into a valve cavity along an inclined hole channel of the inclined air hole, the inclination angle is larger than the critical infiltration angle of liquid (usually lt: 30 degrees), and physical water prevention is achieved; the maintenance-free design is adopted, a traditional dustproof net is omitted, and the manufacturing cost is reduced by more than 20%; dust is difficult to deposit on an inclined hole wall due to the action of gravity, and the sensitivity of the diaphragm is kept at an initial value of 95% or above due to a dry and dust-free environment of a valve cavity.

The present invention proposes a negative ion air machine, which includes a control panel, an ion active oxygen generator, an intermediate filter body, a lower shell, an upper shell, a base, a hanging body, a ceiling fixing seat, and a fan; the base is equipped with a power board and an LED light-transmitting plate, and the base is provided with a front air duct part; the base is connected to the upper shell, and the upper shell is equipped with an intermediate filter body; the lower shell is connected to a cylindrical lower shell, and the lower shell is equipped with a fan, an ion active oxygen generator, and an electrode cleaning component, and the cleaning motor fixing bracket is equipped with an air duct outer shell and an air duct inner shell, and a panel is provided at the bottom of the air duct inner shell, and a touch panel is installed on the panel, and a control panel is installed in the air duct inner shell; the control panel is electrically connected to the fan, the electrode cleaning component, the ion active oxygen generator, the intermediate filter body, the LED light-transmitting plate, and the touch panel, and the power board is connected to the control panel; the ceiling fixing seat is connected to the base through a hanging body. The product can not only purify the indoor air but also release negative ions, and the installation is also relatively convenient.

The invention relates to the technical field of GIS dustproof sheds, in particular to a GIS dustproof shed which comprises a base cloth structure, an air column structure, an outer tarpaulin structure, a filter ring structure, a top suction detection structure and a splicing zipper. The bottom structure is arranged at the bottommost part, and the air column structure is arranged in the bottom structure; the outer tarpaulin structure is installed on the outer side face and the top face of the air column structure, and a door opening is formed in the side face of the outer tarpaulin structure. The filter ring structure is mounted on the periphery of the bottom end of the bottom structure; the top suction detection mechanism is mounted in the middle of the outer tarpaulin structure at the top; and the splicing zipper is arranged between the outer tarpaulin structure and the bottom structure.

The invention relates to the technical field of traditional Chinese medicine active component extraction and raw material medicine purification, in particular to a staged extraction and purification method of traditional Chinese medicine active component raw material medicine. Wherein the raw material medicine of the active component of the traditional Chinese medicinal materials is a matrine raw material medicine, and the preparation method comprises the following steps: S1, carrying out contact extraction on the matrine-containing traditional Chinese medicinal materials and an acidic ethanol aqueous solution to obtain a total alkaloid extracting solution; s2, obtaining a first-time segmented extraction solution; s3, obtaining a desalted enrichment solution; s4, obtaining a matrine fumarate crystal; s5, obtaining a matrine organic phase; and S6, obtaining the matrine bulk drug. By constructing a series purification technical scheme of ethanol-phosphate aqueous two-phase segmented enrichment, nanofiltration dialysis replacement desalination, fumaric acid selective salification crystallization, free alkali release extraction and displacement anti-solvent crystallization, segmented selective enrichment and purification of matrine in the total alkaloid extracting solution are realized.

The utility model provides a fully waterproof outdoor small-spacing LED display screen. The fully waterproof outdoor small-spacing LED display screen comprises a box body and a display screen body. The box body comprises a front mounting shell and a rear mounting shell, a high-definition tempered glass panel is mounted on the front side surface of the front mounting shell in an embedded manner, L-shaped protection plates are adhered to the two sides of the inner wall of the high-definition tempered glass panel respectively, and one end of each L-shaped protection plate is fixedly connected with the inner side wall of the front mounting shell; a partition shell is fixedly connected to the middle of the front side wall of the rear mounting shell, a buffer air cavity is formed between an inner cavity of the partition shell and the rear mounting shell, and the display screen is mounted in a display screen mounting cavity; the lower ends of the separation shell and the front installation shell are provided with air holes which correspond to each other up and down, an exhaust fan is installed at the upper ends of the air holes in the separation shell, and heat dissipation holes are formed in the front side wall of the separation shell. According to the outdoor small-spacing LED display screen, rainwater or water vapor is effectively prevented from directly entering the display screen from mounting gaps of the display screen box body, the moisture-proof performance and the heat dissipation performance of the box body are improved, the service life of the outdoor small-spacing LED display screen is prolonged, and resource waste is avoided.

The invention discloses a real-time tracking method and system for a dammed lake outburst flood peak and a flood propagation process, and the method comprises the steps: arranging a breach unmanned plane group and a plurality of river channel unmanned plane groups at preset points of a breach of a dammed body and a river channel at the downstream of the dammed body respectively before dammed lake outburst; each breach unmanned aerial vehicle group comprises a breach unmanned aerial vehicle, a breach control end and a breach processing end, each river channel unmanned aerial vehicle group comprises a river channel unmanned aerial vehicle, a river channel control end and a river channel processing end, and all the processing ends are correspondingly connected with a server; when the barrier lake breaks out, each control end controls the breach unmanned aerial vehicle and the river channel unmanned aerial vehicle to rise to the position above a target area, each control end transmits information collected in real time to the corresponding processing end in real time through a communication network, and each processing end processes the information and then transmits a signal to the server. Therefore, real-time tracking of the dammed lake outburst flood peak and the propagation process thereof is realized. According to the invention, non-contact measurement is realized, and monitoring personnel are prevented from directly entering a dangerous area, so that the personal safety of the monitoring personnel is guaranteed.