76results about How to "Good quality" patented technology

The invention discloses a knowledge graph-based learning path design system, and belongs to the technical field of learning path design, and the knowledge graph-based learning path design system comprises a knowledge graph construction module which is used for collecting, sorting and representing knowledge in different fields from various sources, and constructing a knowledge graph model; the system comprises a learning module which is used for integrating knowledge levels, interests, preferences and learning style information of users into a coherent knowledge system, a user modeling module which is used for understanding and representing the knowledge levels, interests, preferences and learning style information of the users, and a learning path planning module which is used for generating personalized learning paths according to the information provided by the user modeling module. According to the method, multiple aspects of knowledge graph construction, user modeling, learning path planning, learning resource management, learning monitoring and the like are covered, and through cooperative work of the modules, the system can provide efficient, personalized and comprehensive learning path design, so that the experience and learning effect of learners are remarkably improved.

The invention discloses a video playing control method and device, electronic equipment and a computer readable storage medium. The method comprises the steps that real-time network performance parameters of a video playing end are acquired; the average code rate corresponding to the video stream currently played by the video playing end and the average network performance parameter of the video playing end are determined, and the video played by the video playing end corresponds to the video stream with a plurality of code rate gears; based on the average code rate, the real-time network performance parameter and the average network performance parameter, a video stream of a target code rate gear is determined from the video streams of the multiple code rate gears, and the video stream of the target code rate gear is used for adjusting a video stream played by a video playing end. By using the scheme provided by the invention, the live video with the optimal image quality conforming to the network state can be more accurately provided for the user, so that the comprehensive effect of the image quality and the fluency of the video playing end is better, and the watching experience of the user is improved.

The invention relates to a heating furnace temperature coupling type control system and method based on grid temperature measurement, and belongs to the field of industrial heating furnaces. The heating furnace comprises a heating furnace body, a grid temperature measurement system, a coupling type control system and a furnace temperature control method. The heating furnace body is divided into different areas, and the grid temperature measuring system is composed of a plurality of high-temperature gas sensors and used for measuring the flue gas temperature of the different areas in the furnace. The coupling type control system comprises a pulse type combustion control system and a section adjusting type combustion control system, operation of the combustor can be adjusted in real time according to the difference between the temperature in the furnace and the set temperature, and therefore accurate control over the temperature in the furnace is achieved. According to the control method, different control strategies are adopted according to furnace blanks in different temperature ranges. By means of the method, efficient and accurate control over the temperature in the heating furnace can be achieved, meanwhile, energy consumption is optimized, and heating quality is improved.

The invention relates to an intelligent propaganda and education method, system and device for online car-hailing drivers and a storage medium. The method comprises the following steps: acquiring driving behavior data, service evaluation data and training feedback data of an online car-hailing driver in real time; generating personalized description data corresponding to the online car-hailing driver according to the collected data, wherein the personalized description data comprises driving skill description data, service level description data and training demand description data; determining customized propaganda and education contents of the online car-hailing driver according to the personalized description data; the customized propaganda and education content is pushed to the online car-hailing driver through multiple ways, and the learning condition of the customized propaganda and education content by the online car-hailing driver is recorded in real time. According to the invention, timely, efficient and personalized educational training can be carried out on the online car-hailing driver, and the driving skill, service level and safety awareness of the online car-hailing driver are improved.

The invention provides an immersive cloud game image end-cloud collaborative rendering method and related equipment. The method comprises the steps of determining a to-be-rendered image and image rendering data; performing image analysis on the to-be-rendered image, performing foreground and background division according to an analysis result, and determining a to-be-rendered foreground image and a to-be-rendered background image; according to the image rendering data, rendering the to-be-rendered foreground image and the to-be-rendered background image through a device end and a cloud server end, and determining the foreground image and the background image; and merging the foreground image and the background image through the device end, completing rendering of the cloud game image, and displaying the rendered image.

The invention discloses an intelligent personnel supervision system for electrical equipment maintenance. The intelligent personnel supervision system comprises an electrical equipment acquisition module, a personnel information acquisition module, an environment information acquisition module, a personnel evaluation module, a data processing module and an information sending module, the power equipment acquisition module is used for acquiring power equipment information; the personnel information acquisition module is used for acquiring personnel information; the environment information acquisition module is used for acquiring information of an environment where the equipment is located; the personnel evaluation module is used for evaluating maintenance personnel to obtain personnel evaluation information; and the data processing module is used for processing the power equipment information, the personnel information, the equipment environment information and the maintenance task information to generate personnel quantity regulation and control information, personnel scheduling information, personnel training management and control information and personnel maintenance evaluation information. According to the invention, more comprehensive and intelligent personnel supervision can be carried out, and safe and stable operation of the power equipment can be better protected.

The embodiment of the invention provides an educational resource data sharing method and system, and the method comprises the steps: distributing a first conference role or a second conference role of a multimedia teaching conference for each conference terminal participating in the conference when the multimedia teaching conference is created, and enabling different conference terminals to be arranged in different classrooms; acquiring educational resource data in real time from the first conference terminal to which the first conference role is allocated; and sharing the educational resource data to a second conference terminal to which the second conference role is allocated, so that the second conference terminal displays the educational resource data. According to the embodiment of the invention, cross-region and cross-school real-time sharing of educational resources is realized, effective utilization and fair distribution of high-quality educational resources are promoted, and balanced development of education and improvement of teaching quality are promoted.

The invention discloses a pelletized pod pepper seed coating. The coating comprises the following components: perlite, vermiculite, bentonite, turf and silica gel powder. The preparation method of the pelletized pod pepper seed coating comprises the following steps: seed selection, uniform mixing of a filling agent, inner-layer coating, outer-layer coating, addition of a biological agent, drying and storage. A processing method of inner and outer layers is adopted, so that uniform wrapping can be realized under the condition that an adhesive is not used, the air permeability and water permeability of the coating are ensured, and the coating can be in full contact with soil to breed and enhance the microbial activity by adopting an outer-wrapping microbial agent adding mode; the defects that existing pelletized seeds are prone to being bonded when encountering water, low in germination rate, poor in germination potential and the like are overcome, the adverse effect of use of a binder on the soil environment is overcome, and the technical problems that in the prior art, under adverse conditions, pod pepper pelletized seeds are difficult to germinate and emerge, and the seedling quality is not high are solved.

A spiral pruning method for crisp and honey kumquats is characterized in that when fruit-bearing branches are hung, branch hanging is carried out step by step from top to bottom in a layered mode, two vertically-adjacent layers of fruit-bearing branches are staggered to form a multi-layer three-dimensional tree crown structure, and after branch hanging work is completed, the whole shape of the hung branches is in a spiral rising shape. Comprising the following steps: (1) erecting a supporting rod; (2) trunk selection and culture; (3) main branch selection and arrangement; (4) selecting, remaining and pruning side branches; (5) branch hanging and the like. According to the spiral pruning method for the crisp and honey kumquats, the layout mode remarkably improves the ventilation and light transmission conditions of tree crowns, the photosynthesis efficiency is improved, and uniform distribution and maturity of fruits are promoted.

The invention relates to the technical field of gene engineering, in particular to a tomato SlHXK1 gene and application of the tomato SlHXK1 gene to improvement of weak light tolerance of tomato seedlings. The nucleotide sequence of the tomato SlHXK1 gene is as shown in SEQ ID No. 1. Research finds that the overexpression of the SlHXK1 gene can improve the activity of sucrose anabolic enzymes in tomato stems and increase distribution of dry substances to leaves, so that the content of non-structural carbohydrates in tomato leaves under weak light is increased, the content of carotenoids and soluble proteins in the leaves is increased, and the photosynthetic ability of the leaves is enhanced; therefore, the adverse effect of weak light on dry matter accumulation of tomato seedlings is reduced, the accumulation rate of dry matter of leaves after illumination recovery is promoted, and the weak light tolerance of tomato plants is improved. Therefore, the invention provides a new gene and method for improving the weak light tolerance of the tomatoes, and has important significance for guaranteeing high yield, high quality and annual supply of the tomatoes in China.

The invention relates to the technical field of magnesium ion battery electrode materials, and discloses a silicate positive electrode material of which the chemical formula is MgNi < x > Mn < 1-x > SiO4, x < = 1; a preparation method of a silicate positive electrode material comprises the following steps: S1, ball-milling and mixing a magnesium source, a nickel source, a manganese source, a silicon source and a fluxing agent according to a certain proportion to obtain a Ni-doped precursor; s2, drying the Ni-doped precursor prepared in the step S1; s3, in a protective atmosphere, pre-sintering the Ni-doped precursor subjected to drying treatment in the step S2, and carrying out heat preservation at 300-400 DEG C for 2-3 hours; and heating to 800-1000 DEG C, continuously preserving heat for 6-8 hours, cooling to room temperature, washing and drying to obtain the Ni-doped silicate positive electrode material with the chemical formula of MgNi < x > Mn < 1-x > SiO4, the material is applied to magnesium ion batteries. According to the technical scheme, through doping of nickel, the problems that when an existing MgMnSiO4 material serves as the positive electrode of the magnesium ion battery, the agglomeration phenomenon is serious, the conductivity is poor, and structural distortion and poor cycle performance are caused by manganese ions can be effectively solved.

The invention discloses a fertilizing method for effectively preventing a large amount of phosphorus nutrients in a phosphate fertilizer from being fixed by soil. The fertilizing method comprises the following steps: (1) selecting a forest land; (2) investigating soil environment types; (3) selecting types of phosphate fertilizers; (4) crushing and sieving a phosphate fertilizer; (5) packaging and producing the bag-controlled slow-release phosphate fertilizer; (6) digging fertilization pits; (7) preparing a coconut coir organic fertilizer mixture; (8) applying a bottom-layer coconut coir organic fertilizer mixture; (9) applying a bag-controlled slow-release phosphate fertilizer; (10) applying a coco coir organic fertilizer mixture on the top layer; and (11) covering with soil. By deeply digging holes and respectively applying upper and lower layers of coconut coir organic fertilizer mixtures to surround the bag-controlled slow-release phosphate fertilizer, the phosphate fertilizer is not in direct contact with soil, phosphorus nutrients are prevented from being fixed by reaction of some chemical elements in the soil, and meanwhile, the phosphorus nutrients are controlled to be continuously released for a long time through slow degradation and rotting of the packaging material, so that the slow-release effect of the bag-controlled slow-release phosphate fertilizer is improved. The release rate of phosphorus nutrients is obviously lower than that of a common compound fertilizer, and the released phosphorus nutrients are just absorbed by forest trees. The efficient utilization of phosphorus nutrients is realized.

The embodiment of the invention discloses a home service support method and device based on a large language model, and a medium, is applied to the technical field of smart questions and answers, and is used for solving the problems that the existing answer data query efficiency is low and the matching degree is low. The method comprises the following steps: processing an original service document based on a preset vectorization processing engine to obtain a vectorization index table; processing the problem of the current user through a preset vectorization processing engine, and obtaining document content corresponding to the processed problem of the current user based on the vectorization index table; determining a current home service scene through the corresponding document content so as to call a prompt word template of the current home service scene; and analyzing the corresponding document content and the current user question based on the cue word template, generating a cue word question, inputting the cue word question into a preset large language model, obtaining answer data, and outputting the answer data through a corresponding output template.

The invention provides a web live broadcast high-quality stream pushing system. The system comprises a video acquisition module; the video coding module uses H.264 + coding, and the video coding module is connected with the video acquisition module; the front end is connected with the rear end streaming media server through the video stream pushing module; the back-end streaming media server is connected with the content distribution network, and the back-end streaming media server distributes the processed video stream to the content distribution network; the video playing module is connected with the front end so as to play a video; and the interactive function module is integrated with a WebSocket. A low-delay and high-reliability real-time interaction function is realized on the basis of WebSocket; by using a WebSocket two-way communication function, the occupation consumption of network bandwidth in a live broadcast process is reduced; and an H.264 + coding algorithm is adopted, so that higher compression efficiency and better image quality are realized.

The invention discloses a flue-cured tobacco upper leaf nutrition regulation and matched flue-curing method, which comprises the following steps: S1, primary spraying: spraying a leaf surface regulator I in 3-5 days after middle tobacco leaves are mature and harvested; s2, secondary spraying: spraying a leaf surface conditioning agent II 1-2 days before the upper tobacco leaves are mature and harvested; s3, baking: baking by adopting a baking process of'one low, one high and one long 'in a yellowing period, 'one slow, one low and one long' in a color fixing period and'one slow, one long and one low 'in a stem drying period; the method can effectively improve the quality and baking characteristics of the upper fresh tobacco leaves, reduce diseases of the upper tobacco leaves in the field, and improve the quality of the baked upper tobacco leaves.

The utility model relates to a phase change thermo-acoustic engine experimental device which comprises a thermo-acoustic conversion system and an acoustic-electric conversion system. The thermo-acoustic conversion system comprises a sound production module and a Helmholtz resonant cavity, a ceramic plate stack soaked with water exists in the sound production module, and the stable temperature difference needed for generating the thermo-acoustic effect at the two ends of the ceramic plate stack is reduced. Sound waves generated by the thermoacoustic effect form standing waves in the Helmholtz resonant cavity, and the sound intensity is amplified; the acoustic-electric conversion system comprises piezoelectric ceramics and a triode common-emitter amplification circuit, the piezoelectric ceramics are arranged at the tail end of the resonant cavity and convert acoustic energy into electric energy, and the electric energy is amplified by the triode common-emitter amplification circuit and then drives a nixie tube to display. The experimental device integrates thermodynamics, fluid mechanics, acoustics, material science and electronic technology, has the characteristics of simple structure, low cost, rich physical process and strong exploration, is suitable for experimental teaching, particularly suitable for new engineering teaching requirements, and is beneficial to improving the multidisciplinary cross practice ability of students.

The invention belongs to the technical field of agricultural planting, and particularly relates to a pesticide-reducing synergistic seed-dressing agent and application thereof.The seed-dressing agent is prepared from, by weight, 10%-20% of lanthanum nitrate, 7%-14% of arginine, 3% of a film-forming agent, 0.2% of a thickening agent and the balance distilled water; wherein the lanthanum nitrate is lanthanum nitrate hexahydrate, and the molecular formula of the lanthanum nitrate is La (NO3) 3.6 H2O (CAS number: 10277-43-7); the arginine is L-arginine, and the molecular formula of the arginine is C6H14N4O2 (the number of CAS is 74-79-3). The application of the pesticide-reducing synergistic seed-dressing agent comprises the following steps: uniformly mixing the seed-dressing agent with a pesticide for treating seeds, and dressing seeds of crops such as rice, wheat and the like; the seed-dressing agent disclosed by the invention has the beneficial effects of promoting absorption of pesticide by crop plants and increasing the pesticide content of stem and leaf parts, so that the prevention effect on plant diseases and insect pests is improved, the use amount of the pesticide for seed treatment can be remarkably reduced, and the pesticide utilization efficiency is improved. No adverse effect is caused on seedling emergence of crop seeds, and seedling quality is improved. The fertilizer can promote crop growth and improve resistance to diseases and insect pests.

The present invention provides a method and system, device and medium for pushing evaluation index values, the pushing method comprising the following steps: obtaining the evaluation index value corresponding to the first user; collecting the historical vital sign parameters of the second user with respect to the first user; pushing the evaluation index value to the second user based on the historical vital sign parameters; wherein the historical vital sign parameters include the vital sign parameters collected from the second user within a first preset time period after the second user receives the historical evaluation index value of the first user. The present invention realizes accurate and differentiated pushing of the evaluation index value corresponding to the first user to the second user through intelligent analysis of the historical vital sign parameters of the second user with respect to the first user, and can build a smart digital education ecosystem in the application scenario of student education, realize close connection and interaction between families, schools and students, and break through the limitation of lack of differentiated evaluation in the traditional digital education model.

The invention relates to the technical field of pesticides, in particular to a seed treatment suspending agent and a preparation method and application thereof.The seed treatment suspending agent is prepared from active ingredients and auxiliaries, and the active ingredients account for 1-50 wt% of the seed treatment suspending agent; the active component comprises procymidone. According to the prepared seed treatment suspending agent, the active ingredient procymidone is introduced and applied to coating of soybean seeds, through the synergistic effect of auxiliaries, soybean root rot can be obviously treated, the quality of seedlings is improved, growth of the soybean seedlings is promoted, the prevention and treatment effect can reach 90% or above, resistance is not likely to be generated, and the seed treatment suspending agent has good market application prospects.

The utility model relates to the technical field of steel bar truss floor support plates, and discloses an assembly type disassembly-free steel bar truss floor support plate which comprises a galvanized steel plate and two base rods arranged above the galvanized steel plate, a balance rod is arranged above the two base rods, a connecting rod is fixedly installed between the balance rod and the two base rods, and the connecting rod is connected with the galvanized steel plate. The base rod, the connecting rod, the balance rod and the U-shaped rod which are integrated are placed on a galvanized steel plate, in the placing process, limiting blocks and discs are arranged in corresponding circular grooves and limiting holes in a penetrating mode, after the limiting blocks and the discs are placed in the corresponding circular grooves and limiting holes, the U-shaped rod is just attached to the galvanized steel plate, and under the cooperation of the rotating rod, the limiting blocks, the discs, the circular grooves, trapezoidal blocks, mounting grooves and springs, the U-shaped rod is fixed to the galvanized steel plate. When the limiting blocks are separated from the trapezoidal blocks, the trapezoidal blocks bear the elastic force of the springs, the limiting blocks can be limited, the steel bar truss floor support plate can be conveniently assembled, formwork erecting and steel bar tying are not needed, assembling and fixing are convenient, operation is easy, and using is convenient and fast.

The invention discloses a hydroelectric training and competition device, and the device comprises an operation assembly which comprises a human-computer interaction interface; the control assembly comprises a programmable logic controller, an intelligent data acquisition box and a switch, the man-machine interaction interface, the programmable logic controller and the intelligent data acquisition box are connected to the switch, and the man-machine interaction interface, the programmable logic controller and the intelligent data acquisition box are arranged in the same local area network segment; and the execution assembly is connected to the programmable logic controller and / or the intelligent data acquisition box, the execution assembly connected with the programmable logic controller is controlled through the programmable logic controller, and the intelligent data acquisition box realizes data acquisition of the execution assembly connected with the intelligent data acquisition box.

The invention discloses a method for determining eight active components in dendrobium or cosmetics, which comprises the following steps: (1) pretreating a sample to obtain a solution for instrumental analysis; (2) detecting the eight active components in the sample by adopting a liquid chromatography-mass spectrometry method; the eight active ingredients are quercetin, naringenin, rutin, apigenin, caffeic acid, ferulic acid, syringic acid and chlorogenic acid. According to the method disclosed by the invention, extraction, chromatographic separation and mass spectrum quantification and qualitation of eight active substances including quercetin, naringenin, rutin, apigenin, caffeic acid, ferulic acid, syringic acid and chlorogenic acid in the dendrobe and the cosmetics are realized, and a technical support and a scientific basis are provided for research on efficacy relevance of active components of the dendrobe in the cosmetics.

The invention discloses a 240h ultra-slow-setting dry-mixed wet spraying material and a preparation method for underground engineering, comprising the following components: by weight, 100-105 parts of silicate cement, 280-285 parts of pre-screening soil and stone waste, 25-30 parts of fly ash, 4-6 parts of quick-setting agent, 40-50 parts of mixing water, based on the mass of PO 42.5 R silicate cement, and also comprising 4% to 5% of compound retarder. The unique slow-setting component of the present invention prolongs the transportation time of shotcrete, so that the material does not need to be piled up underground, and the situation of random stacking and cement failure of the material is avoided. The pre-screening soil and stone waste and fly ash in the material of the present invention are both solid waste-based materials. The two are used as the main components of shotcrete, which alleviates the supply pressure of natural sand and gravel, machine-made sand and gravel and cement, turns waste into treasure, and improves resource utilization.

The invention relates to the technical field of meat product detection, in particular to a meat product detection system and method.The meat product detection system comprises a ripening cutting module, an image acquisition module, a preliminary detection module, a laser detection module and a ripening analysis module; the detection module is used for determining whether the ripened beef is cut into ripened steak according to the judged deterioration characterization state of the ripened beef, and performing preliminary detection and laser detection on the ripened steak to determine the structural characterization state and lipid characterization state of the internal structure of the ripened steak; and determining whether the cooked beefsteak is qualified or not according to the structure characterization state and the lipid characterization state. By evaluating the internal structure, the lipid state and the surface deterioration condition of the cooked beef steak, the quality control and safety of the beef product are effectively improved, the personal error is reduced, and the detection efficiency and accuracy are improved.

This invention relates to the field of hybrid rice seed production technology, specifically to a method for the factory-scale seedling raising of the male parent for hybrid rice seed production. The method includes: sowing the male parent once using factory-scale seedling raising; then, by controlling the seedling age, transplanting the seedlings in two batches manually to the field or transplanting them mechanically in one batch, replacing the traditional two-stage sowing and staggered transplanting method. This method avoids the impact of low spring temperatures on the growth of the male parent, simplifies the seedling raising process, reduces the sowing and seedling raising process by one step, saves labor and seedling raising costs, and ensures that the flowering periods of both parents coincide. The final seed yield is not significantly different from traditional methods, and it is suitable for large-scale, mechanized hybrid rice seed production.

The invention discloses a preparation method of an isavuconazole hydrolysis impurity, and belongs to the technical field of chemical synthesis. Comprising the following steps: (1) reacting isavuconazole serving as a raw material with an alkaline reagent in a mixed solution of a first solvent and water; (2) removing the first solvent; (3) carrying out reverse extraction by using a second solvent, and concentrating a water phase; (4) dissolving salt from the water phase by using an acidic reagent, and filtering the solid; and (5) pulping the solid with a mixed solution of a third solvent and n-hexane to obtain hydrolyzed impurities. The synthesis route is simple and easy to operate; raw materials are easy to obtain, reaction conditions are mild, implementation is easy, synthesis difficulty is low, and cost is low; the reaction conversion rate is high, decarboxylation side reactions are few, and the target product yield and purity are high.

This invention provides a molded rice seedling tray with a seedling-strengthening agent and acid-adjusting properties, and its preparation method, belonging to the field of rice seedling technology. A method for preparing a molded rice seedling tray with a seedling-strengthening agent and acid-adjusting properties includes the following steps: (1) mixing agricultural and forestry waste with sulfur powder and fermenting to obtain acid-adjusting fermented material; (2) mixing a seedling-strengthening agent, zeolite powder, and acidic river silt to obtain a functional masterbatch; (3) mixing the acid-adjusting fermented material, the functional masterbatch, ammonium sulfate, and sodium carboxymethyl cellulose to obtain a pressed material; (4) pressing the pressed material into shape to obtain a molded rice seedling tray with a seedling-strengthening agent and acid-adjusting properties. This invention successfully solves the four core problems in soilless rice seedling cultivation: difficulty in acid adjustment, difficulty in fertilizer transport, high cost, and difficulty in industrialization, achieving a win-win situation for both ecological and economic benefits, and possessing extremely high industrial application value and promotion prospects.

This invention discloses a system and method for the comprehensive utilization of liquid nitrogen cold energy, including a liquid nitrogen storage tank, a vaporizer, a fan, an insulation cover, a temperature sensor, and an intelligent control unit. The vaporizer has a liquid nitrogen channel with a liquid nitrogen inlet and a nitrogen outlet. The outlet of the liquid nitrogen storage tank is connected to the liquid nitrogen inlet of the vaporizer via a first pipe, which is equipped with a regulating valve. The nitrogen outlet is connected to the grain silo via a second pipe. The insulation cover surrounds the vaporizer. The fan delivers ambient air into the insulation cover, allowing indirect heat exchange between the air and the vaporizer. After cooling, the air is connected to the grain silo via a third pipe. The temperature sensor is installed on the second and / or third pipes. The intelligent control unit is electrically connected to the temperature sensor, the regulating valve, and the fan. Liquid nitrogen is vaporized by the vaporizer, and the air is cooled after heat exchange within the insulation cover. Operating parameters can be automatically adjusted according to grain conditions and climate, achieving energy-saving and intelligent temperature and atmosphere control in the grain silo.

The invention relates to an optical imaging lens. The optical imaging lens comprises a lens barrel, a lens assembly and a spacing assembly, the optical imaging lens satisfies the following relational expression: 0.85 < T67 / (CT6 + CT7) < 1.2; 1.8 < = d6s / f6 < 2.1; wherein T67 is the air interval from the image side surface of the sixth lens to the object side surface of the seventh lens on the optical axis, CT6 is the center thickness of the sixth lens, CT7 is the center thickness of the seventh lens, d6s is the inner diameter of the plane, perpendicular to the optical axis, of the object side surface of a sixth interval element, and f6 is the effective focal length of the sixth lens. According to the optical imaging lens, the sixth spacing element is arranged between the sixth lens and the seventh lens, and the inner diameter of the sixth spacing element is controlled in the longitudinal direction, so that the inner diameter of the sixth spacing element and the effective focal length of the sixth lens meet a specific relation, and the stray light path of light rays on the sixth lens and the seventh lens can be limited; therefore, the problem of stray light reflection between the sixth lens and the seventh lens is solved.

The present invention relates to a distribution box data analysis system using a BP neural network, comprising: a visual acquisition mechanism, which is arranged opposite to a visual inspection station and is used to perform visual picture acquisition on the front of a distribution box whose front width is to be inspected; a content mapping mechanism, which is used to intelligently analyze the real-time width value of the front of the distribution box according to various pixel point information corresponding to the front of the distribution box and item-by-item curvature data corresponding to the front of the distribution box using a BP neural network model. The distribution box data analysis system using a BP neural network of the present invention has stable operation and intelligent design. Since the real-time width value of the front of the distribution box can be intelligently analyzed using a BP neural network model based on various visual information of the distribution box shell, the BP neural network model is a BP neural network that has been trained a set total number of times, thereby completing the intelligent analysis of the front width of the current distribution box.