89results about How to "Reduce removal" patented technology

The invention belongs to the field of new energy materials and devices, and particularly discloses nitrogen self-doped phenolic resin-based hard carbon microspheres and a preparation method and application thereof.The preparation method comprises the following steps that nitrogen-containing phenol monomers, aldehyde monomers and a basic catalyst are mixed according to a certain sequence, and after prepolymerization is conducted at the low temperature, the nitrogen self-doped phenolic resin-based hard carbon microspheres are obtained; carrying out high-temperature hydrothermal reaction to obtain phenolic resin microspheres; and sequentially carrying out low-temperature carbonization treatment and high-temperature carbonization treatment to obtain the nitrogen self-doped phenolic resin-based hard carbon microspheres. Compared with the existing nitrogen-doped resin hard carbon preparation method, the nitrogen-self-doped phenolic resin hard carbon has the advantages that a nitrogen source is introduced into the phenolic resin hard carbon from the source end of the resin, the production process is simplified, and uniform distribution and atomic-scale doping of the nitrogen element are realized. The material is used for sodium ion batteries, has excellent long cycle stability, good rate capability and high specific capacity, and has industrial application prospects.

The invention provides a mixed bonding surface planarization process method of a wafer and chemical mechanical polishing equipment. The method comprises the following steps: controlling a grinding head to adsorb a first wafer to be subjected to surface planarization treatment, and grinding the first wafer on a first grinding pad to remove a copper film above a groove of the first wafer so as to obtain a second wafer; controlling the grinding head to move to a second grinding pad, and grinding the second wafer on the second grinding pad so as to remove the dielectric layer of the second wafer, the barrier layer above the dielectric layer and copper with the same thickness as the dielectric layer in the groove, and obtaining a third wafer with an exposed interface layer; controlling the grinding head to move to a third grinding pad, and grinding the third wafer on the third grinding pad, so that the surface height of the interface layer is the same as the surface height of the copper in the groove, and obtaining the wafer with the flattened surface; wherein the hardness of the third polishing pad is smaller than the hardness of the first polishing pad and the hardness of the second polishing pad. According to the invention, the wafer with a flat and smooth surface can be obtained.

The invention discloses an intrusion detection method and system based on artificial intelligence, and belongs to the technical field of network security, and the method comprises the steps: firstly extracting the features of network flow data, and carrying out the standardization and dimension reduction processing of the extracted features, and obtaining a feature data set; constructing a joint machine learning model which comprises a plurality of parallel learning models, performing batch training on all the learning models by adopting the data set and combining transfer learning, and fusing prediction results of a plurality of pre-trained learning models by adopting an integrated learning method to obtain a trained joint machine learning model; inputting real-time network flow data into the trained combined machine learning model, and performing intrusion monitoring on the network flow data by the combined machine learning model; according to the method, efficient and real-time intrusion detection is carried out on the network traffic, and the detection accuracy and adaptability are improved.

The invention discloses a ghost imaging target reconstruction method based on FSD-GIRA, and relates to the technical field of digital image processing. According to the technical scheme, a fuzzy clustering algorithm is used for classifying feature values of an optical field intensity measurement matrix of an optical path detector, the feature values are reconstructed through singular value decomposition, dimensionality reduction processing of measurement data of a ghost imaging system is achieved, and the ghost imaging target reconstruction method based on FSD-GIRA is obtained. A WE-FOMP-CG algorithm is proposed, and recovery of sparse signals is optimized by combining generalized orthogonal matching pursuit, a conjugate gradient method and a multi-threshold wavelet noise reduction method; and selecting the most relevant sensing matrix array in each iteration, solving a linear equation set by using PCG, carrying out wavelet preprocessing and multi-threshold de-noising on a result, and updating and recovering estimation. The calculation efficiency and the convergence speed are improved, and a more accurate recovery result is provided in a high-noise environment. The invention also provides a WBDH algorithm, and the algorithm employs a dual denoising mechanism, including wavelet transform and a BM3D method, so as to guarantee that the restored image details and structures are reserved, and further improve the reconstruction quality of the ghost imaging target.

The invention discloses a method for manufacturing an aspheric fused quartz optical element, which comprises the following steps of: S1, carrying out ultra-precision grinding on the aspheric fused quartz optical element to ensure that the surface shape error and the surface roughness of the ground surface meet the requirements; s2, performing magneto-rheological polishing and shaping on the aspheric fused quartz optical element; s3, the surface shape precision of the aspheric fused quartz optical element is detected, if the detection result meets the requirement, the step S4 is executed, and if the detection result does not meet the requirement, the step S2 is executed again; s4, the aspheric fused quartz optical element is subjected to fairing polishing; and S5, detecting the front shape of the transmitted wavefront of the aspheric fused quartz optical element, filtering the intermediate frequency band, then performing power spectral density analysis, if the intermediate-high frequency error meets the requirement, completing the processing, and if the intermediate-high frequency error does not meet the requirement, returning to the step S4. The method has the advantages of high precision, high efficiency, low damage, low cost and the like.

The invention relates to the technical field of line deicing devices, in particular to a wire deicing device for a high-voltage power transmission and transformation project, which comprises four shearing mechanisms and a mounting plate, the vertical bisector of two wires in the same column is a first axis, and the vertical bisector of two wires in the same row is a second axis; the two shearing mechanisms are symmetrically arranged about the first axis, the other two shearing mechanisms are symmetrically arranged about the second axis, each shearing mechanism comprises a rotating shaft and a rotating block, the rotating shafts are rotationally arranged on the mounting plate, the rotating blocks are slidably connected with the corresponding wires, and the vertical distance between the rotating shafts and the first axis is smaller than the vertical distance between the rotating blocks and the first axis. Through cooperative arrangement of the positions of the rotating shaft and the fixed shaft, the extending direction of the wire between the rotating shaft and the rotating block is not consistent with the extending direction of the uncleaned part and the cleaned part of the wire, and the rotating shaft and the rotating block apply shearing force to the wire between the rotating shaft and the rotating block to damage an ice layer on the surface of the wire.

The invention discloses a double transition metal / chitosan-based carbon aerogel composite material and a preparation method and application thereof.The method comprises the steps that a nitrogen source and transition metal salt are added into a hydrochloric acid solution of chitosan, stirred, dissolved and evenly dispersed to prepare a mixed solution, the mixed solution is subjected to freeze drying, and the double transition metal / chitosan-based carbon aerogel composite material is obtained. Chitosan aerogel containing transition metal and a nitrogen source is prepared; the transition metal salt is any two of ferric salt, cobalt salt and nickel salt; the chitosan aerogel containing the transition metal and the nitrogen source is placed in a methanol solution of 2-methylimidazole, after vibration treatment and drying, the chitosan aerogel is placed in a nitrogen atmosphere to be subjected to heat treatment, and the double-transition-metal / chitosan-based carbon aerogel composite material is prepared. The preparation method is simple and reasonable in design, the prepared material has good specific surface area and porosity, the formed metal-nitrogen double active center effectively improves the adsorption performance of the material, and the material has good catalytic performance.

The invention relates to the technical field of medical instruments, in particular to an adjustable bone-to-bone fixing device with a main nail and an implanting mechanism device.The adjustable bone-to-bone fixing device comprises the main nail, a fixing coil, a first auxiliary nail and a second auxiliary nail. Early load-bearing exercise of ankle joints of a patient is facilitated, ankle joint degeneration and traumatic arthritis are reduced, and the risk of fracture of an implant is greatly reduced; compared with elastic fixation, two fixing points are taken on the tibia, one fixing point is taken on the fibula, all the fixing points are connected through sutures, and the length of the sutures is adjustable, so that the tibia can bind the fibula in a surrounding mode through the sutures, compared with a single-strand suture transverse fixation mode, the fixation mode is closer to a native ligament, and fixation is more stable and reliable; and moreover, the micro-motion function between the tibia and the fibula is reserved while the bone removal amount is less.

The invention discloses a comprehensive cleaning device for filter element production, and belongs to the technical field of filter element cleaning. Comprising a shell, a flushing mechanism, a brushing mechanism, a drying mechanism and an anti-splashing mechanism, a containing cavity is formed in the shell, a plurality of limiting grooves distributed in a circumferential array mode are formed in the containing cavity, filter elements are clamped and fixed in the limiting grooves, the flushing mechanism comprises a water inlet pipe and a spraying head, and the flushing mechanism is used for flushing the filter elements in the containing cavity; the scrubbing mechanism comprises scrubbing rollers, a first motor and an adjusting assembly, the scrubbing rollers are arranged between two adjacent groups of filter elements and are arranged in a circumferential array, the first motor is used for driving the scrubbing rollers to rotate, and the adjusting assembly is used for adjusting the distance between the scrubbing rollers and the filter elements; the drying mechanism is used for drying the filter element in the containing cavity, and the anti-splashing mechanism is used for preventing impurities in the containing cavity from blocking the drying mechanism. According to the invention, multiple groups of filter elements can be flushed at the same time, the flushing efficiency of the filter elements is improved, and the water consumption for flushing the filter elements is reduced.

The utility model discloses a lithium ion battery pyrolysis carbonization system, and belongs to the technical field of waste lithium ion battery recovery. The lithium ion battery pyrolysis carbonization system comprises an electromagnetic heating pyrolysis device, a secondary combustion chamber and a waste gas treatment device which are connected in sequence. The technical problems that a conventional lithium ion battery pyrolysis carbonization process is large in waste gas generation amount and poor in treatment effect are solved or at least partially solved.

The invention provides a support mortar manufacturing device and method. The support mortar manufacturing device comprises a barrel with the top in an opening shape; the adjustable stirring mechanism comprises a supporting frame erected at the top opening of the barrel, a combined stirring rod is rotatably arranged at the center of the supporting frame, the combined stirring rod is coaxial with the center shaft of the barrel, and a driving device used for driving the combined stirring rod to rotate is further arranged at the top of the supporting frame. Through the linkage adjusting system, the angle and the length of the blade and the stretching and retracting of the telescopic teeth can be automatically adjusted, various materials from thin slurry, viscous mortar and coarse aggregate can be flexibly handled, the stirring effect is ensured to meet different construction requirements, the blade state can be automatically adjusted at different stages, and the stirring speed and the blade form are optimized, so that the stirring efficiency is improved. Efficient and uniform mixing is realized, and the stirring time is shortened.

The utility model provides a silicon steel heat treatment furnace tail gas waste heat recycling device, which relates to the technical field of waste heat recycling and comprises a heat exchange water tank, a filter tank is fixedly mounted on the top surface of the heat exchange water tank, one side of the filter tank is communicated with a gas inlet pipe, and the other side of the filter tank is communicated with a passing pipe. Heat storage fins are fixedly installed on the inner wall of the heat exchange water tank, inserting grooves are formed in the surface of the filter tank, and sealing strips are fixedly installed on the inner walls of the inserting grooves. The waste heat recovery device can effectively recover waste heat of tail gas of the silicon steel heat treatment furnace, reutilization of the waste heat of the tail gas is achieved by heating water sources in the heat storage fins and the heat exchange water tank, energy utilization efficiency is improved, energy consumption and cost can be reduced, meanwhile, the arranged filter screen can purify the tail gas passing through the filter tank, and the waste heat recovery device has the advantages of being energy-saving and environment-friendly. And dust particles are effectively removed, so that subsequent equipment can be protected from being damaged by the dust particles, and the service life of the equipment is prolonged.

The invention relates to the technical field of skid-mounted filtering and separating devices, in particular to a skid-mounted filtering and separating integrated device which comprises a gravity separator, a filtering separator and a produced liquid buffer tank. The device further comprises an electric telescopic rod, the electric telescopic rod is installed at the top end of the filter separator, the output end of the gravity separator is connected with the filter separator, the output end of the filter separator is connected with a produced liquid buffer tank, the telescopic end of the electric telescopic rod is connected with a movable frame, and the movable frame is movably connected into the filter separator. A liquid distribution pipe is arranged between the movable frames, a cleaning nozzle is arranged at the rear end of the liquid distribution pipe, two groups of filter frames are arranged at the rear end in the filter separator, and filter screens are arranged in the filter frames; two-stage separation is achieved, the density difference of a gas phase, a solid phase and a liquid phase is fully utilized, the replacement frequency of a filter element can be reduced, the operation cost is reduced, solid-liquid impurities in feed gas are efficiently removed, and the influence of the feed gas on operation of a compressor is reduced.

The invention belongs to the technical field of pesticide chemistry, and particularly relates to a preparation method of a penconazole active compound, which comprises the following steps: by taking 2-(2, 4-dichlorophenyl) valeraldehyde and 1, 2, 4-triazole as starting raw materials, condensing and reducing under the action of a catalyst to obtain a penconazole crude product, and recrystallizing to obtain the penconazole active compound. Compared with the prior art, the penconazole active compound prepared by the invention has the advantages that the conversion rate of the raw materials is greatly improved, the problem that a derivative is generated by using potassium borohydride as a reducing agent is solved, so that the penconazole has atom economy and environmental protection property, the process flow is simpler, the operation steps of subsequent treatment and the use of a solvent are reduced, and the cost is reduced. The method is simple in operation and low in energy consumption, impurities in the penconazole preparation process are effectively removed, the purification rate and the yield of the penconazole technical are greatly improved, and the strict requirements for high-quality pesticides in agricultural production are met.

The invention provides a palladium-carbon catalyst as well as a preparation method and application thereof. The palladium-carbon catalyst comprises an activated carbon carrier and metal palladium and metal ruthenium which are loaded on the carrier, and in the catalyst, the atom proportion of the exposed Pd (111) crystal face is 25%-75%. When the palladium-carbon catalyst is applied to hydrofining of crude terephthalic acid, the content of residual p-carboxybenzaldehyde can be effectively reduced.

The invention relates to the technical field of recovery and comprehensive utilization of byproduct mother liquor in industrial production of pentaerythritol, and discloses a method for separating organic matters in pentaerythritol mother liquor by using air flotation equipment, which comprises the step of removing the organic matters in the pentaerythritol mother liquor by using the air flotation equipment to obtain impurity-removed mother liquor. According to the scheme, the oily impurities in the pentaerythritol mother liquor can be removed by adopting the air flotation equipment and utilizing the adsorption and mixing effects of tiny bubbles on the oily impurities, the impurity removal effect achieved by an existing extraction method is achieved, however, the air flotation equipment is adopted to separate organic matters in the pentaerythritol mother liquor, an extracting agent and a flocculating agent are not needed, and the cost is low. The energy consumption required for recovering the extracting agent is effectively reduced, and the impurity removal energy consumption and cost of the pentaerythritol mother liquor are effectively reduced.

This utility model discloses an eco-board based on single mortise and tenon joint. The eco-board includes sub-wood strips and mother-wood strips, and the transverse direction of the eco-board is spliced ​​using mortise and tenon joints, while the longitudinal direction is spliced ​​using toothed joints. Its advantages are as follows: Compared with double mortise and tenon joints, the eco-board of this utility model, using a single mortise and tenon joint, has higher process efficiency and better economy. The processing time for single mortise and tenon joints can be reduced by 30%-50%, making it particularly suitable for mass production and requiring lower equipment precision. Secondly, it reduces the grooving process, lowering labor and tooling costs. Furthermore, the single mortise and tenon joint reduces material removal, making it suitable for scenarios requiring weight reduction (such as hanging cabinets and movable furniture). Moreover, the single mortise and tenon joint is particularly suitable for thin boards, requiring no larger board thickness for support, and can be used stably in eco-boards with a thickness of less than 18mm, thus broadening its application range.

The invention discloses a recycling method of fluorine-containing and indium-containing waste liquid, and belongs to the technical field of resource recycling, the method comprises the following steps: adjusting the pH value of the fluorine-containing and indium-containing waste liquid to 3-5, effectively precipitating indium, reducing the precipitation of other ions, calcining the precipitate, promoting the decomposition of indium oxide, and carrying out reduction calcination to obtain high-purity crude indium; the pH value of the supernatant is adjusted to 1-2, impurity metal elements are effectively removed, the activity of the additive is improved, side reactions are reduced, finally, step-by-step flocculation is conducted, filtrate and waste residues containing chromium and fluorine are obtained, metal elements and fluorine elements in the filtrate are effectively removed, the waste residues containing chromium and fluorine can serve as by-products to be directly sold, and the cost is reduced. And the economic benefit is effectively improved.

The present disclosure discloses a battery pack configured to discharge a high-temperature gas to the outside of the battery pack without affecting other adjacent battery modules when the gas is generated inside the battery module. The battery pack according to one aspect of the present disclosure includes a pack housing; a battery module; and a pack cover having a first center venting channel, a first side venting channel, a second center venting channel and a second side venting channel configured to guide a venting gas generated from the battery module at a position corresponding to the battery module, the pack cover being configured to cover the battery modules by being coupled to the pack housing.

The present application relates to the technical field of feeding and dosing device, especially relates to an automatic feeding and dosing device for anti-blocking granular ammonia-nitrogen removing agent and a feeding method thereof. The automatic feeding and dosing device and the feeding method thereof are aimed at solving the technical problems that the labor intensity of workers is large, dust is harmful to human body, the continuity and uniformity of dosing cannot be guaranteed, and the saving of reagent is not conducive in the prior art. The present application provides an automatic feeding and dosing device for anti-blocking granular ammonia-nitrogen removing agent, which comprises a supporting column, a material bin, a lifting control device, a guide assembly, an outer dust cover, a rotary control assembly, a sealing cover plate, a limiting seat, a screen, a flexible knocking assembly, a power device, a spraying pipe, a nozzle and a discharging adjusting assembly. The present application adopts a crane to automatically feed the ammonia-nitrogen removing agent, ensures the continuity and uniformity of dosing of the ammonia-nitrogen removing agent, saves the amount of the ammonia-nitrogen removing agent, effectively suppresses dust dispersion through spraying, and reduces the harm to human body.

This invention discloses a method for the biological drying of sludge, comprising the following steps: baking biomass materials, mixing the resulting baked product with sludge, biochar materials, and a conditioner for biological drying, thereby completing the sludge drying process. In this invention, by biologically drying the mixture of baked product, sludge, biochar materials, and conditioner, not only can the self-generated heat within the system be used to effectively dewater the sludge in a very short time, but the bioavailability of the microbial carbon source can also be improved, effectively reducing the generation of polluting gases. This method can effectively reduce the emission of polluting gases while achieving rapid dewatering. It has advantages such as simple process, low treatment cost, low energy consumption, high drying efficiency, good dewatering effect, low polluting gas production, and low content of toxic and harmful components in the dried product. It can solve the problems of biomass resource waste and pollution, achieve sludge reduction and resource utilization, and has high returns and good application prospects.

The utility model discloses a water-soluble cutting fluid filtering device, which belongs to the technical field of cutting fluid filtering and comprises a filtering box, a first filtering plate is arranged in the filtering box, a rotating shaft is rotatably connected in the first filtering plate, a transverse plate is fixedly connected to the side forehead surface of the rotating shaft, and a first magnetic plate is connected to one side surface of the transverse plate. A first adsorption mechanism is arranged on the upper surface of the transverse plate, a brush is fixedly connected to the lower surface of the transverse plate, a second filter plate is fixedly connected to the lower end of the rotating shaft, fixing plates are symmetrically arranged above the second filter plate, stirring rods are fixedly connected to the inner side surfaces of the fixing plates, and a medicament box is fixedly connected to the outer side surface of the upper end of the filter box; the lower end of the medicament box is fixedly connected with the filter box through a feeding pipe. According to the water-soluble cutting fluid filtering device, metal impurities in the cutting fluid can be adsorbed, so that a filtering plate in the filtering device is prevented from being blocked, the filtering effect of the water-soluble cutting fluid is improved, cutting fluid filtering steps are reduced, and the practicability of the filtering device is improved.

The utility model discloses a valve air tightness tester convenient for maintenance, which relates to the technical field of valve air tightness testing and comprises a tester body and a wiring board, the wiring board is arranged in the middle inside the tester body, racks are vertically welded on two sides of the middle of the inner wall of the tester body respectively, and the racks are sleeved on two sides inside the wiring board. Tooth grooves are formed in the two sides of the interior of the wiring plate respectively, the racks and the tooth grooves are connected in a meshed mode, a movable groove is formed in the top end of the wiring plate, multiple sets of bunching hoops are embedded in the movable groove, the two sides of the bunching hoops are each fixedly provided with an elastic rope, multiple sets of buckling columns are distributed on the side edge of the movable groove of the wiring plate, and the elastic ropes and the buckling columns are buckled and fixed. By arranging the wiring plate, the bunching hoop, the elastic rope and the buckling column buckle, faults caused by loosening or disorder of wires are avoided, the stability and the reliability of the tester are improved, plastic buckles needed by bunching are reduced, the maintenance efficiency is improved, and the problems that internal wire layout is complex and maintenance is inconvenient are solved.

The invention discloses a speech enhancement method based on a time sequence convolutional network, and the method comprises the steps: obtaining a data set, completing the preprocessing of the data, and generating a data pair for training a model; constructing a measurement standard of the system according to general industry knowledge rules and actual application scene requirements; constructing an encoder by using convolution short-time-distance Fourier transform, and using the encoder as a characteristic value of audio data and a model input item; a time sequence convolutional network TCN training model is introduced, and an encoder is decoded to obtain a voice enhancement processing result; according to the method, the effect of speech enhancement is analyzed according to a previously established measurement standard, and large-scale complex audio enhancement processing is quickly and effectively performed by introducing the time sequence convolutional network. The structure, the number of layers and parameters of the time sequence convolutional network can be learned and adjusted according to actual conditions, so that the model has flexibility and adaptability, the performance and the effect of the model are further improved, and stronger support is provided for realizing large-scale multi-type speech enhancement.

The utility model belongs to the field of waste gas treatment equipment, and particularly relates to a water curtain dust removal device for waste gas, which comprises a heat exchange tube, a spray tower and an exhaust fan, a water tank is arranged in the spray tower, and an equipartition plate with holes is arranged above the water tank; one end of the heat exchange tube is used for introducing waste gas, and the other end extends into the pool; two layers of spraying assemblies are arranged in the spraying tower, and an air gap for gas to pass through is formed between the spraying assemblies and the inner wall of the spraying tower; two layers of first baffle plates are arranged between the spraying assembly on the upper layer and the spraying assembly on the lower layer, the first baffle plates are obliquely arranged, and the inclination directions of the first baffle plates are different; gaps are formed between the first baffle plates and the inner wall of the spray tower, a flow gap and an air gap are formed between the two first baffle plates, and the gas flow direction is limited by the gaps and the flow gap together; an air outlet is formed in the spray tower, is communicated with the exhaust fan, and is positioned above the spray assembly on the upper layer. Therefore, the problems of low treatment efficiency and poor treatment effect of fine particles in waste gas at present are solved.

The present invention relates to an expandable electrochemical system for strengthening electrolytic chlorine decomposition reaction, the system comprising an expandable anode and a cathode, the expandable anode is a granular electrode integrally filled in the anode area of ​​an electrolytic reactor or a granular electrode integrally filled in a water-permeable cavity; the granular electrode is constrained and filled according to the size of the electrolytic reactor or the electrode area / volume required for electrolysis; the granular electrode is a bismuth oxide-carbon-based material composite granular electrode. The system of the present application utilizes low voltage to achieve electrode strengthening to produce active chlorine, does not generate secondary pollution, reduces costs and realizes full utilization of resources.

The invention discloses a sponge-based defluorination composite material as well as a preparation method and application thereof. The sponge-based defluorination composite material comprises sponge serving as a carrier and metal salt loaded on the sponge, the metal salt comprises iron metal salt, aluminum metal salt and lanthanum metal salt; the iron metal salt is ferric sulfate or ferric chloride, the aluminum metal salt is aluminum chloride, and the lanthanum metal salt is lanthanum chloride or lanthanum nitrate. Compared with other adsorption type defluorination materials, the sponge-based defluorination composite material disclosed by the invention is low in cost, convenient to use and capable of being repeatedly used for many times; meanwhile, the sponge-based defluorination composite material is high in defluorination efficiency and stable in performance, and has remarkable application advantages.

The invention relates to the technical field of substance purification, in particular to a purification method of sialylated oligosaccharide. The purification method of the sialylated oligosaccharide, provided by the invention, not only is simple and feasible in process, but also reduces dissociation and browning of the sialylated oligosaccharide in the purification process, effectively reduces the loss of the sialylated oligosaccharide and improves the yield of the sialylated oligosaccharide; the sialylated oligosaccharide prepared by the purification method can realize higher purity and yield, and has better application prospect in industrial production.

The present invention discloses a stepped temperature type dehumidification and ventilation distribution box, which comprises a main chamber area for placing electrical equipment and an air flow channel area, wherein the main chamber area and the air flow channel area are separated by a baffle, and there is a gap between the baffle and the top of the distribution box body, the main chamber area and the air flow channel area are connected through the gap, through holes are distributed on the bottom plates of the main chamber area and the air flow channel area, a first heat dissipation chamber is arranged below the bottom plate of the main chamber area, and a second heat dissipation chamber is arranged below the air flow channel area, a first fan group is arranged in the first heat dissipation chamber, and a second fan group is arranged in the second heat dissipation chamber, the first fan group blows wind into the main chamber area, and the second fan group draws the wind in the main chamber area out of the distribution box through the air flow channel area; the device provided by the present invention has a simple structure and can realize dehumidification and ventilation of the distribution box.

The invention relates to the technical field of communication signal monitoring, and discloses a communication signal monitoring method and system for a repeater, and the method comprises the following steps: 1, respectively obtaining the environmental parameters and communication quality parameters of a historical data repeater, integrating the data into a parameter data group according to the type of extreme weather, obtaining parameter data sets corresponding to different extreme weather types; 2, based on the parameter data sets corresponding to the different extreme weather types, data in each parameter data set is processed, and the normalized parameter data sets of the different extreme weather types are obtained; wherein the process of processing the data in each parameter data group comprises the step of removing abnormal values in the data. According to the method, in the data cleaning process, the rationality of parameter change under extreme weather is reasonably considered, and the problem that actually required effective data is taken as an abnormal value to be removed is effectively solved, so that the effectiveness of correlation calculation in subsequent steps is ensured.