768 results about "Technical performance" patented technology

The invention provides a control method of a grid friendly type distributed power source based on hybrid energy storage. The method comprises the steps of optimally designing a topology structure of the distributed power source, controlling a direct current power supply system in a coordinating mode through a direct current (DC) / DC converter controlling a model normalization model, and self-adaptively controlling a grid of an alternating current (AC) side DC / AC converter. The distributed power source not only can be connected in a large grid to operate so as to reduce the influence of intermittent renewable energy power generation grid connection on the grid and provide support of voltage and frequency for the grid, but also can be connected into a micro-grid to operate as a network unit of the off-network type micro-grid to maintain stability of voltage and frequency of the off-network type micro-grid. When an outer grid breaks down, the distributed power source can realize switch between a grid mode and an island mode so as to improve power supply reliability of important loads in the system. The distributed power source improves technical performance and economic performance of the whole system through matching utilization of an energy type system and a power type energy storage system.

Disclosed is a hydropower station power quick adjustment implementation method based on intensive small hydropower station groups. The hydropower station power quick adjustment implementation method based on the intensive small hydropower station groups aims at the practical problem that output fluctuation brings great impact to power grid operation after wind power integration, which is caused by the factors of being uncontrollable, unpredictable, strong in randomness and the like of wind power, and the characteristics of being small in unit capacity, large in quantity, rapid in start and stop, rapid in response adjustment and remote in geographic position of the intensive small hydropower station groups, stabilizes the wind power output fluctuation by rapidly adjusting power of the intensive small hydropower station groups, achieves joint optimization operation through complementation in aspects of the time, technical characteristics and the like of hydropower and the wind power, and meets the requirements for safe, stable and economic power grid operation from economical and technical performance. The hydropower station power quick adjustment implementation method based on the intensive small hydropower station groups achieves power quick adjustment based on the intensive small hydropower station groups for stabilizing the wind power output fluctuation from the aspects of adjustment autonomy and synergy of a device, a rapid start and stop adjustment characteristic of the small hydropower station groups, rapidity of the device and the like.

The invention discloses a composite type room temperature magnetic refrigeration system and a direction control valve thereof. The direction control valve comprises a valve body and a valve element which rotate relatively; the valve body is provided with a valve body pump hole, a valve body hot end hole, a valve body liquid storage box hole, a valve body clockwise rotation magnetic hole and a valve body reversion magnetic hole, wherein the valve body pump hole and the valve body hot end hole oppositely extend in the direction of the rotating axis, and the valve body liquid storage box hole, the valve body clockwise rotation magnetic hole and the valve body reversion magnetic hole are formed in a staggered manner in the circumferential direction; the valve element is provided with a valve element pump flow channel and a valve element hot end flow channel which are arranged in a staggered manner in the circumferential direction; when the refrigeration system is in a first heat exchange mode; the valve body pump hole is communicated with the valve body clockwise rotation magnetic hole through the valve element pump flow channel, and the valve body hot end hole is communicated with the valve body reversion magnetic hole through the valve element hot end flow channel; when the refrigeration system is in a second heat exchange mode, the valve body pump hole is communicated with the valve body reversion magnetic hole, and the valve body hot end hole is communicated with the valve body clockwise rotation magnetic hole; and when the refrigeration system is in a first and second non-heat-exchange mode, the valve body pump hole is communicated with the valve body liquid storage box hole. The direction control valve effectively reduces the extra power consumption on the basis of meeting various technical performance indexesof a refrigerating machine, improves the efficiency of the refrigerating machine, and makes the overall structure compact and noise low.

The invention relates to a disk cutter layout design optimization method of development machine, concerning not micro and multi-modal disk cutter layout design optimization problems, especially applicable to full-face rock tunnel boring machine tool optimized layout design. A full-face rock tunnel boring machine knife tool layout design method, first determine disc hob position on the knife set and knife set overall technical performance parameters, in accordance with the actual knife tool layout technical requirements of the full-face rock tunnel boring machine, establishment of the binding properties of complex nonlinear multi-objective optimization model for knife tool layout; layout tool to establish grading optimization design model of knife tool layout polar pathway and angle calculation; putting the knife tool polar pathway and disc cutter knife polar angle as a design variable, adoption the genetic algorithm. The invention fast and effective in the determination of the knife tool optimized layout on the knife disc, made the knife disc having a small outside force and outside torque, thereby prolonging knife disc, knife tool and knife disc axletree life of the development machine, shorten the design cycle and improve design efficiency .

The invention relates to the technical field of electric cars, in particular to an integrated water-cooled power battery box. The integrated water-cooled power battery box provided by the invention comprises a box cover, a box body and a temperature regulating power system, wherein the box body is made of an aluminum alloy material and is manufactured by an extrusion moulding technology; a circulating flow passage is formed in the wall of the box body; a circulating loop for a temperature regulating medium to flow circularly is arranged inside the wall of the box body; and the temperature regulating power system can drive the temperature regulating medium to circularly flow in the circulating loop. In such a way, a water cooling board and a battery box are designed in an integrated manner,a hollow aluminum alloy section is adopted to achieve lightweight design, mechanical properties such as strength and rigidity are met, the integrated water-cooled power battery box is simpler in structure, better in technical performance and smaller in occupied space, and the comprehensive cost can be reduced; the heat-dissipating, cooling and temperature-raising and heating functions can be achieved by using one set of temperature regulating power system, the integrated water-cooled power battery box is simpler in structure, more convenient and fast to use and smaller in occupied space, themanufacturing cost and the using cost can be reduced, and the heat-dissipating efficiency and the heating efficiency can be improved.

The invention provides an antibacterial antistatic wood bamboo plastic floor and a manufacturing method thereof, belonging to the field of plastic floors. The floor is in a composite structure and comprises a wood bamboo plastic foam layer, a pattern layer and an UV (ultraviolet) coating. By reasonably designing materials of each layer, the performances of ageing resistance, odor and bacteria resistance, weather resistance, flexibility, wear resistance and the like of the plastic floor are effectively improved; an integral forming mode is used for replacing a conventional processing mode, so that the effects of energy conservation and consumption reduction are achieved, the product qualification rate is increased, comprehensive technical performance and economic indicators of the floor are far superior to those of a similar product, and especially the floor is excellent in performances of odor and bacteria resistance, static electricity resistance, wear resistance, light weight, long service life and the like; the floor is being environment-friendly, sanitary, energy-saving, cost-reducing, economic and the like.

The invention provides a method for producing a mineral wool fiber by using high-temperature liquid waste slags of a metallurgical furnace as a raw material. The method is characterized by comprising the following steps: discharging the high-temperature liquid waste slags of the metallurgical furnace, allowing the waste slags to flow into a heat insulting electric furnace and keeping the temperature; melting the slags to generate fibers; melting a hardening and tempering agent; drawing and blowing the fibers by using a high-voltage fan; and blowing the generated mineral wool into a wool collecting chamber. The method is simple and convenient to operate; the fiber filaments are smaller than 7 micrometers in diameter, long and good in toughness; sensible heat in the raw material is fully utilized; comprehensive utilization of different industrial waste materials such as copper, lead, zinc, nickel, tin and high-temperature liquid waste slags are realized; the prepared mineral wool fiber is better than rock wool and mineral wool produced by other methods in acid resistance and waterproofness, excellent in technical performance, wide in application and applicable to preparing excellent environment-friendly energy-saving heat-insulating materials; the method disclosed by the invention is relatively low in investment cost, reliable in technology, low in resource consumption, environment-friendly and clean in production and obvious in economic benefits.

The invention provides a coordination control method for common direct current bus mixing energy storage systems. The method includes the steps of building topological structures of the mixing energy storage systems, coordinately controlling different types of the energy storage systems by means of a direct current (DC) / DC converter control mode normalization model, and coordinately controlling the energy storage systems in the same type and with different capacity. According to the coordination control method for the common direct current bus mixing energy storage systems, by means of coordinate control for a lithium battery energy storage system and a super capacitor energy storage system, reasonable utilization of the different types of energy storage systems is realized, and therefore, the response speed of the systems is improved, service life of the energy-type energy storage systems is prolonged, and technical performance and economical performance of the whole system are improved.

The present invention discloses a flat-belt driven disc separator, comprising a power part, a driving part, a lubrication system, a working part, a machine part and a control and assisting part. In addition to that the requirements of the function and performance of the separator is satisfied, the driving system is largely simplified, the driving path is brief, the quantity of driving components is largely reduced and the technical requirement of processing is lowered; regular replacement of expensive copper gear wheel, friction drum and other wearing parts is avoided, and as a result, the structure of the complete machine is simplified, the cost of production and use is reduced, the failure rate of the machine is lowered, and the technical performance of the complete machine is improved. The invention can be directly applied to condensing separation of natural rubber, and the invention can also be applied to separating other emulsions; the rotary-drum structure of the invention can overcome the disadvantages of the prior art; the continuous operation time is prolonged and the rotary-drum heating is alleviated; the strength, safety, reliability and maintenance technique are improved. The driving part and the lower machine body can form the driving of a manual slag-discharge separator, a gushing slag-discharge separator and a ring-valve slag-discharge separator and the lower machine body.

The invention discloses a polar electricity dust removing device with bagged dust collection, which comprises a dust remover shell, a smoke gas inlet, a uniform air board, a smoke gas outlet, dust buckets, filtering bags, electrode wires and a high-voltage insulating compartment, wherein, a plurality of rows of cloth bags are evenly arranged at interval inside the shell, and the high-voltage electrode wires are arranged at the circle center of a concentric circle of every four cloth bags and connected with a power source through the high-voltage insulating compartment arranged at the top of a dust remover; the uniform air board is arranged under a plurality of rows of filtering bags at the lateral wall of the dust remover shell close to the smoke gas inlet, multiple levels of dust buckets are arranged under the multiple rows of filtering bags, and the smoke gas outlet is arranged above the multiple rows of filtering bags at the lateral wall of the dust remover shell. The polar electricity dust removing device with bagged dust collection has the advantages of simple and unique structure, superior technical performance, smaller resistance, effective overcoming of the reverse corona phenomenon and good dust removing effect, etc. The polar electricity dust removing device with bagged dust collection improves the integral dust removing efficiency under the agglomeration action of electrostatic fields and the interception action of the cloth bags, effectively protects the filtering bags from being burned out by discharge sparks by adopting protective cage structure, and reduces device cost by substituting the steel polar plates with the filtering bags.

A gas-shielded flux-cored wire with recyclable welding slag belongs to the welding field. In the invention, the skin of the gas-shielded flux-cored wire is made from a mild steel strip, and welding slag powder is partially or completely instead of natural rutile, thus the purposes of saving the resource and reducing the cost are achieved. The powder of the flux-cored wire comprises the following chemical components in percentage by weight: 15-35% of the welding slag powder of the flux-cored wire (including 20-65% of TiO2, 5-15% of MnO, 5-15% of MgO, 5-15% of SiO2, 1-10% of Fe2O3 and 1-10% of Al2O3), 15-35% of TiO2, 2-7% of Si, 3-8% of Mn, 0.5-5% of Al-Mg, 0-5% of Na, 0-5% of K, 1-5% of Mg and the balance of ferrous powder. When the flux-cored wire manufactured by adopting the welding slag powder is applied to welding, the gas-shielded flux-cored wire has the advantages of excellent technical performance of welding and omnibearing welding adaptability, attractive appearance good humidity resistance, low content of diffusible hydrogen in a welding seam, excellent crack resistance, high connection strength and good low-temperature impact toughness.

The invention relates to a reinforced nonwoven fabric and a production method thereof. Fibers are subjected to opening, carding and lapping by virtue of professional equipment, reinforcing ribs are added in the lapping process, and the reinforcing ribs are uniformly arranged at equal intervals or are arranged at unequal intervals. The fibers are impregnated with an adhesive in a saturated way or the fibers are impregnated with the adhesive by virtue of foams, thus the reinforced nonwoven fabric is obtained. The production method of the reinforced nonwoven fabric comprises the following steps: opening, carding, lapping, impregnating by the adhesive in a saturated way or by virtue of the foams, drying, slitting and packaging. The product produced by the invention has the advantages of high tension strength and low cost; and meanwhile, the production process and production equipment are simple, the technical performances are stable, and the practicability is strong.

The invention relates to a method for realizing an electric auto-passing neutral section of a train by utilizing a power electronic switching device and belongs to the technical field of the manufacturing of the power electronic switching device. An existing modern power electronic technology, namely a high-power voltage current transducer control technology, is adopted to realize the complete equipment of power electronic switching device which is used as a 'phase-change switch for a ground auto-passing neutral section device', thereby optimizing an existing 'uninterrupted automatic electricphase-separating system for electrically dragged train', exactly realizing an uninterrupted automatic electric phase-separating function of an electrically dragged railway train and overcoming inherent defects of technical performance of an original system.

The invention discloses a polymer cement concrete lamella which is characterized by comprising the following components in parts by weight: 5-40 parts of cement, 10-20 parts of polymer, 25-30 parts of anti-skidding aggregate,5-15 parts of filler, 0-2 parts of auxiliary agent, 0-3 parts of pigment and 20-25 parts of water. The invention has the advantages that the characteristics of high strength, strong cohesive force, good durability, long service life, and the like of the polymer cement material are fully utilized, the technical performance is reliable and the cost performance is high by forming a lamella on the road surface or the pavement surface.

The present invention relates to a flux cored wire for the gas shielded welding of weathering steel. The wire consists of a steel strip and a core. The steel strip is a carbon steel strip. The core comprises components of the following percentages by weight: 34 to 38% of TiO2, 2.0% of NaF2, 3 to 5% of SiO2, 11 to 12% of Mn, 3 to 5% of Ti-Fe, 5 to 6% of Si-Fe, 3 to 5% of Mg, 2 to 3% of Ni, 3.0 to 4.0% of Cr, 2.0 to 2.5% of Cu, 0.1 to 0.3% of Zr and the balance of ferrous powder. The flux cored wire has excellent welding technical performance, mechanical properties and anti-corrosion properties. The chemical compositions, the mechanical properties and the anti-corrosion properties of deposited metal all meet the welding requirements of weathering steel Q450NQR1. The present invention provides a flux cored wire suitable for weathering steel Q450NQR1.

An intelligent lorry crane with an intelligent operation control system comprises a column assembly, a boom assembly, a hydraulic oil tank assembly, a steel wire rope, a rear supporting leg assembly, a lifting hook assembly, a frame assembly, and an oil pump; according to the invention, a program controller is mounted on an automotive chassis; a length sensor, an angle sensor, a limit switch, and a second balance valve are mounted on the boom assembly; an upper cavity pressure sensor, a lower cavity pressure sensor, and a first balance valve are mounted on the column assembly; a multi-way valve, a normal open solenoid valve, a tilt sensor, an oil temperature sensor, a central rotation slip ring, and an alarm are mounted on the frame assembly; the program controller is connected with a Canbus bus; the Canbus bus is respectively connected with the length sensor, the angle sensor, the upper cavity pressure sensor, the lower cavity pressure sensor, and the limit switch through the central rotation slip ring; the oil temperature sensor, the tilt sensor, the normal open solenoid valve, and the alarm below the frame are respectively connected by corresponding branch lines in the Canbus bus. The invention adopts advanced electronic technology and information processing technology, has multiple display functions, can perform alarming and protection of system faults, and greatly improve the technical performance and quality of the lorry crane.

The invention discloses a rice character type structure arrangement method of hobs of a full section rock digging machine, belonging to the design field of a cutter disk of the full section rock digging machine. Geologic parameters and digging parameters are confirmed according to a geologic report of tunnel engineering, wherein the parameters comprise rock unconfined shear strength, rock uniaxial compressive strength Sigma, rock brazilian tensile strength Sigma Tau, rock stability, digging speed and cutter disk rotate speed. An automatic solve model of the arrangement problem of the hobs on the cutter disk is built, so as to confirm the arrangement position of the positive hobs and the edge hobs with the rice character type arrangement method and a synergetic evolution method. When the hobs are arranged on the faceplate type cutter disk, the technical performance index needs to be met comprises side force to the cutter disk, the overturning moment, interfere area, and the quantity and the mass center of non-order cock fragmentation of the adjoining hobs. The method can fast and effectively confirm the arrangement position of the cutter on the cutter disk, prolong the service lifeof the cutter disk of the digging machine, the cutter and the large bearing of the cutter disk, reduce the shake and the noise of the digging machine, and improve the digging efficiency of the cutterdisk.

The invention discloses a method for producing a high-capacity 523-type ternary positive material. The method comprises process steps of mixing raw materials, sintering for three times and treating after sintering. Based on the performance characteristics of a ternary material, a three-time sintering and synthesizing process comprising primary low-temperature sintering of a tunnel kiln and secondary sintering of a roller kiln in sufficient reaction phases, and a high-temperature keeping treatment phase of the roller kiln is adopted so that a crystal structure of the product is complete and stable; the crystal structure has smooth transition and whole result standardization of nickel, cobalt and manganese is realized; the overall performance is improved. According to the method, the synthesizing process is simple and the process is easy to control; the energy consumption is low, the efficiency is high and the cost is low; the method is suitable for industrialized production; the product is high in technical performances and high in quality; the implementation effect is obvious and the application is wide so that the method has very good popularization and application values.

The invention discloses four novel preparative and operational versions of a staining agent of pearly single wood plate, and belongs to the wood modification field. The staining agent consists of a dye, a dyeing levelness and accelerating agent, a fixing agent and a penetrating agent. The wood imitation single plate can be levelly dyed at the temperature of 75 DEG C for 60 minutes to achieve the pearly effect. The agent combination has the advantages of reasonable design of preparation, good technical performance, uniform color, good pearly effect, small energy consumption, low cost, etc.

The invention relates to a high-toughness flame retardation phenolic prepreg composite material, its preparation method and its application, which is characterized in that a reasonable molecular structure design and a synthesis technology are combined for substantially raising the reaction activity of a phenolic resin prepolymer under the low temperature, on the basis of phenolic resin, a thermoplastic polymer and a rubber flexibilizer are introduced, and the toughness of the composite material can be substantially enhanced, a bromine / antimony system fire retardant is introduced for making up the disadvantages of decreased flame resistance performance caused by the addition of a flexibilizer; a preparation technology for regulation and control as well as optimization of the prepreg is used for controlling the solidification degree and the volatile matter content of the prepreg, thereby the soft feeling and moderate viscosity of the phenolic prepreg can be realized, and the composite material possesses good spreading technical performance. The composite material can be use for inner decoration parts of airplane ceilings, luggage compartments and sidewall plates, ship wallboards and cabinets, and high speed train ceilings and sidewall plates and the like.

The invention discloses a verifiable and adjustable full synchronous communication network, and an implementation method thereof. The implementation method of the verifiable and adjustable full synchronous communication network comprises the steps: setting a time frequency standard system and a performance monitoring and evaluation system; comparing all the PRCs (Primary Reference Clock), LPRs (Local Primary Reference) and the like of the whole network respectively with the time frequency standard system in a common view satellite mode; according to the obtained clock error through common view comparison between the PRCs and LPRs and the time frequency standard system, calculating, processing and evaluating the technical performance in the performance monitoring and evaluation system; and adjusting the clock of each PRC and each LPR through the clock error so as to realize full synchronization of the communication synchronization network. The implementation method of the verifiable and adjustable full synchronous communication network belongs to a communication synchronization network full synchronizing method based on satellite common view, can establish a high accuracy time frequency measuring system, a synchronization performance evaluation system and a synchronous calibration system, can realize trusted verification and calibration of the synchronization performance quality, and can realize full synchronous operation of the full synchronous communication network based on the above capabilities.

The invention discloses a fire retardant, belonging to the field of fire-proof technology. The fire retardant comprises the components by weight percent: 45-55% of epoxy resin coated ammonium polyphosphate, 10-15% of pentaerythritol, 3-5% of melamine, 5-10% of coated red phosphorus, 5-10% of magnesium hydroxide, 5-10% of aluminium hydroxide, 5-10% of zinc borate, 1-5% of carbon formation accelerator, 1-5% of smoke suppression agent and 0.5-3% of coupling reagent. The fire retardant is capable of inhibiting flame combustion and smoldering, can be smeared or sprayed onto any object so as to guarantee the object to be only carbonized without burning, has good compatibility with material, can be evenly dispersed on the material which is prevented from burning, and has better affinity; the fire retardant is high in stability, so that the physical and technical performances of the material mixed with the fire retardant are not influenced; and the fire retardant causes less smoke during burning and does not generate poisonous gas, thus belonging to environment-friendly fire retardant and being added into materials such as plastics, paint, and rubber.

The invention relates to a platform for testing the performance of a main shaft of a machine tool. The platform comprises a test bed, a main shaft unit, a main clamping device, an auxiliary clamping device and a detection bar, wherein the main clamping device and the auxiliary clamping device are arranged on the test bed and used for fixing both ends of the main shaft unit; and one section of the detection bar is penetrated into an axis of the main shaft unit, and the other section of the detection bar is contacted with a dynamic precision detection device and a thermal deformation measurement device respectively; the dynamic precision detection device is fixed on a transverse guide rail capable of moving along an axial direction of the main shaft unit; and the thermal deformation measurement device is fixed on a longitudinal guide rail capable of moving along a longitudinal direction of the main shaft unit. By the platform, the technical requirements on fixing of the main shaft, installation and moving of a measurements instrument and the like of fixtures or clamps which meet an experimental requirement can be met, so that technical performance data of a plurality of points of the main shaft can be tested conveniently and comprehensively.

The invention relates to a method for detecting the time information of an output signal of a satellite synchronous time service device, which comprises the following steps: setting the output opening time T of a pulse signal output end (4) of a controllable time scale signal source (1) and setting the output opening time T into a time arrival triggering mode; matching with the controllable time scale signal source (1) to output a pulse synchronized with a satellite to start in 1pps in designated time T (27); and capturing an output signal of a satellite synchronous time transfer device (3) by a triggered oscilloscope (2) so as to finish the detection of serial message time information of the satellite synchronous time transfer device and the detection of the correctness of the B code time information of the satellite synchronous time transfer device. The method can more completely test the technical performance of the satellite synchronous time transfer device of a grid substation, thereby more completely ensuring the time synchronous accuracy of second equipment.

The invention discloses refinement grain type welding wires for an alpha type titanium alloy manual argon tungsten arc welding machine. The welding wires are divided into a Ti-AL series and a Ti-B series. A welding wire of Ti-Al series comprises the following components in percentage by mass: 3 to 5 percent of AL, 0 to 0.4 percent of B, 0 to 1 percent of C and 93.6 to 96.2 percent of 0-grade titanium sponge. A welding wire of Ti-B series comprises the following components in percentage by mass: 0.4 to 0.6 percent of B, 0.02 to 0.4 percent of Si, 0.2 to 0.4 percent of C and 98.6 to 99.38 percent of 0-grade titanium sponge. The welding wires are made by the steps of melting, shrinkage hole removal, surface machining, billet forging, annealing treatment, hot rolling, drawing and vacuum hydrogen removal. The welding wires of the invention have small weld structure, high tensile strength, high Vickers hardness, excellent welding technical performance and lower production cost, are applicable to large titanium components and realize small electrochemical performance difference between the weld and a parent material.

The invention discloses a method for preparing heat insulation anti-cracking raw soil bricks. The method is characterized in that: calcined desulfurization gypsum, desulfurization ash, crop stalk powder, re-dispersible latex powder, surfactant, clay and water in a water-solid ratio of 0.3 to 0.5 are adopted in the method; and the bricks are prepared by adopting the steps of mixing, stirring, molding, curing and the like. The method effectively utilizes desulfurization wastes of a coal fired power plant and agricultural solid waste crop straws, has the advantages of low cost, good mechanical property and durability, good cracking resistance, thermo-technical performance and the like, is convenient for production and can be recycled.

The invention relates to the field of second-hand automobile estimation, in particular to a method and system for quantifying evaluation and estimation of the second-hand automobiles. The method includes the following steps of inputting basic information of the automobiles, conducting timely technical detection to obtain automobile condition information of the automobiles, estimating replacement cost, theoretical newness rates, market price realization correction factors and newness rate correction factors of the second-hand automobiles by comparing the basic information and the automobile condition information with pres-stored information stored in an information storage portion, calculating reference prices and estimation value of the automobiles to be estimated, and outputting the estimation results. According to the method and the system, quantification of evaluation and estimation of the second-hand automobiles is achieved on the basis of timely objective information of the automobiles and especially on the basis of the information in the aspect of technical performance obtained by introducing the technical detection means, the value of the second-hand automobiles can be evaluated in a relatively comprehensive, objective and accurate mode, influences caused by man-made subjective factors are reduced, and the problems caused by that at present, evaluation and estimation of the second-hand automobiles rely on the man-made subjective factors to a great extent are solved.

The invention discloses a typical mine area heavy metal pollution soil ecological restoration technology evaluating method, which comprises the following steps that (1) an evaluation index system is built; (2) the scoring is carried out by experts, each level judgment matrix is built, and the index weight is calculated; (3) evaluation index standards are determined; (4) a typical mine area heavy metal pollution soil ecological restoration technology comprehensive evaluation mathematical model is built; (5) a typical mine area heavy metal pollution soil ecological restoration technology evaluating system is developed. The invention also provides the typical mine area heavy metal pollution soil ecological restoration technology evaluating system. The evaluating method is combined with a computer technology, a fast and practical auxiliary decision making tool is built, the scientific basis can be provided for selecting the proper typical mine area heavy metal pollution soil ecological restoration technology in the five aspects including technical performance, governance cost, environment influence, resource utilization and regional harmony performance, and the accuracy and the efficiency of the evaluation work are greatly improved.

The invention discloses a vending machine intelligent goods-replenishing method based on natural language processing. An operation worker scans a two-dimensional code on a vending machine, passes verification and enters a background H5 goods-replenishing page web end; the operation worker repeats goods-replenishing information to a goods-replenishing page through a mobile phone microphone or a headset, a server performs natural language processing on voice information for determination from the operation worker, on one hand, the goods-replenishing information is stored in a virtual vending machine at a cloud end, and on the other hand, the goods-replenishing information is sent to the goods-replenishing vending machine to update local inventory information and achieve language intelligentgoods replenishment. The goods-replenishing process is simplified, errors are avoided, and efficiency and technical performance are improved.