162 results about "Nice guidance" patented technology

The invention relates to a transmission line audible noise prediction method based on BP neural network optimization. The method includes acquiring and preprocessing data parameters, establishing a BP neural network prediction model of the data parameters, performing optimization training on the BP neural network by the ant colony algorithm, and utilizing the network to predict the transmission line audible noise. The method has high prediction accuracy, fine convergence and high stability, the problem that the BP neural network falls into local minima is avoided, and great guidance significance is provided for transmission line audible noise prediction and audible noise reducing development.

The invention relates to a blast furnace molten iron silicon content four-classification trend prediction model establishing method and application and belongs to the technical field of automatic detection. The method comprises acquiring historical data; performing data pre-processing; determining model input variables and output variables; clustering molten iron silicon content samples through a fuzzy mean clustering method effectively to obtain model output variable four-classification trend change block division standards; establishing the four-classification trend prediction model through an extreme learning machine. By means of the model, the silicon content change trend can be predicted, the trend change amplitude can be obtained, that is, four-classification trend change conditions of sharp rise, small rise, sharp decrease and small decrease of the molten iron silicon content of the next furnace can be predicted. Guidance for blast furnace operators to determine furnace conditions in advance, take measures of small adjustment, early adjustment and the like and prevent rapid changes of the furnace conditions.

The invention discloses a gas well liquid-carrying mechanism visualization simulation experiment device of a complex structural well. The gas well liquid-carrying mechanism visualization simulation experiment device solves the problem that a simulation experiment is inaccurate, and comprises a gas injection system, a water injection system and a well shaft portion. The gas injection system comprises an air compressor, a gas storage tank and a refrigerated dryer. The air compressor, the gas storage tank and the refrigerated dryer are sequentially communicated. The water injection system comprises a gas-liquid separator, a water storage tank, a booster pump, a pulse ejector and a liquid flow meter. The well shaft portion comprises a well shaft, a gas-liquid mixer and a flow guiding flexible pipe. According to the gas well liquid-carrying mechanism visualization simulation experiment device of the complex structural well, the vertical well gas well liquid-carrying theory can be independently studied, the horizontal-section liquid-carrying theory can be independently studied, a gas well liquid-carrying experiment can be performed, the gas-liquid mixed-phase flow experiment can also be performed, the effect simulated by the device is similar to the practical situation, the results obtained by the experiments are more accurate, and therefore the performed experiments are of great guiding significance in practical production.

The invention relates to a blast furnace first slag experiment method and a first slag experimental furnace which solves the problem that the current experiment method can not well guide the optimization of furnace material structure for first slag can not be acquired. The first slag experimental furnace comprises an electric furnace and an air distribution cabinet, wherein the electric furnace is provided with a hearth pipe; a graphite crucible positioned on a graphite base is arranged in the hearth pipe; the upper end of the graphite crucible is provided with a center press rod, and the upper end of the center press rod penetrates through the hearth pipe and is provided with an inserted thermocouple; a material surface load readjusting device is arranged on the center press rod; the upper end of the hearth pipe is provided with an upper cover, an exhaust opening and a displacement sensor, and the lower end is provided with a material receiving box and communicated with the air distribution cabinet by a reducing gas inlet; and a pressure difference transmitter is arranged on a connecting pipeline of the reducing gas inlet and the air distribution cabinet. The experiment method obtains first slag by simulating the blast furnace condition through the first slag furnace, records all detecting data on line and carries out chemical analysis and microscopic detection on the first slag, thereby having important guide significance for optimizing the furnace material structure.

The invention discloses a laminar cooling temperature control method. The method includes: using temperatures of starts and ends of a roughly-cooled segment and a finely-cooled segment of a steel plate as constraint conditions, determining steel plate operation standard speed, the amount of roughly-cooled segment standard valves, and the amount of finely-cooled segment standard valves, meeting the constraint conditions; acquiring actual operation speed of the steel plate, comparing the actual operation speed to steel plate operation standard speed, and adjusting the amounts of roughly-cooled segment and finely-cooled segment valves according to comparison results; acquiring actual initial temperature of the start of the roughly-cooled segment, comparing the actual initial temperature to steel plate initial temperature, and adjusting the amounts of the roughly-cooled segment and finely-cooled segment valves according to comparison results, measuring actual steel plate final temperature of the end of the finely-cooled segment, comparing the actual steel plate final temperature to target final temperature, and adjusting the amounts of the roughly-cooled segment and finely-cooled segment valves according to comparison results. The invention further provides a system that implements the method. The method and the system have the advantages that steel plate cooling can be controlled in real time, intermediate temperature control and cooling rate control are achieved, and the guidance for the laminar cooling process is of good value.

The invention discloses an experimental test device and method for forced imbibition capability of shale. The test device mainly comprises a clamp holder, a press machine, a calorstat, a constant-speed constant-pressure pump, an intermediate container, a constant-speed constant-pressure pump outlet valve, a tee, an inlet valve for a fluid in the parallel bedding direction and an inlet valve for afluid in the vertical bedding direction. The test method comprises the steps of 1) rock sample processing, 2) porosity testing, 3) test parameter determining, 4) fracturing fluid preparing, 5) experimental testing and 6) imbibition capacity calculating. The test device and the test method which are disclosed by the invention have the advantages that various influencing factors such as formation stress, formation temperature, fluid injection pressure, shale anisotropy and the like can be considered in the test method to ensure that the forced imbibition capability in the different bedding directions, of the shale, can be quantitatively characterized; the change rule of the forced imbibition amount of the shale under different formation conditions with time can be accurately reflected and quantitatively tested; and very good guiding roles are played for knowing the imbibition rule of the shale and optimizing the shale volume flowback system after fracturing.

The invention discloses a comprehensive power distribution network fault risk assessment method. According to the method, firstly basic information of a power distribution network is obtained for calculating the value of a basic index; then the index is graded based on a grading standard; a comprehensive fault probability value, a comprehensive fault result value and a fault risk value are calculated according to the weight of the index, the grade of the index and the value of each factor; and finally, the power distribution network is subjected to fault risk grading according to the calculation results and then analysis of weak links of the power distribution network is carried out. Compared with the prior art, the method can comprehensive assess the power distribution network fault power-off risk under influence of many factors, is suitable for evaluation and comparison of power distribution networks in different regions in China, and has a good guidance function for plan and construction of power distribution networks.

The invention discloses a method for detecting defect positions on radial sections of trees. According to the method, the surface of a tested tree respectively undergoes four times of sensor fixing operations; all the fixed sensors are respectively connected to a stress wave detector, and the stress wave detector is connected to a PC; a pulse hammer is used to knock on a stress wave signal emission sensor; stress wave propagation time data is acquired by the PC; stress wave propagation speed data is calculated; the stress wave propagation speed data is respectively compared with health reference value of the tested tree to judge the stress wave propagation speed data is abnormal data or normal data; and finally, a stress wave signal propagation route map is drawn, and an initial stress wave signal propagation route undergoes primary and secondary treatments. The obtained stress wave signal propagation route map can show defect positions on the radial section of the tree. By the method, defect positions on the radial section of the tree can be rapidly and accurately detected, and the experiment operation is convenient. The method has a good guidance effect on detection of defects inside trees.

The invention discloses a method of building a reliable improved effect relation between investment on a power grid and power supply. Firstly, a relation model of feeder improvement measure investment and reliable improved effects (for reducing household weigh at blackout) including annular grid improvement, segment switch increasing, superterranean moved cables and the like is built with feeders serving as units. A cost and benefit analyzing method is used for estimating all effects of improvement measures and finally, a reliable relation model of the investment on the power grid and power supply is set up. With the method of building the reliable improved effect relation between the investment on the power grid and power supply, parameter variation of a feeder grid frame and improved household number in blackout corresponding to reliable parameter variation can be rapidly and effectively estimated, a good indicating effect can be exerted on a reliable improvement scheme on the power grid, a complicated power grid reliability estimating process is avoided, excellent reference values can be provided for arrangement of improvement of the power grid in a macroscopic mode and obtaining of the reliable level of the most proper power grid.

The invention discloses a simulation reservoir gas drilling shaft obstruction-deplugging experiment apparatus. The apparatus comprises a simulation shaft system, a simulation shaft gas injection system, a simulation reservoir system, a data acquisition and electronic control system, wherein the simulation shaft gas injection system communicates with the bottom end of a simulation shaft, the simulation reservoir system communicates with the side edge of the overpressure resistant steel pipe (21) of the simulation shaft system, and the computer terminal (19) of the data acquisition and electronic control system acquires information of each pressure sensor, each flowmeter and each highs-speed camera (20) and controls the opening and closing of a solenoid valve A (16), a solenoid valve B (13) and a solenoid valve C (10) through a CAN bus (22). The apparatus provided by the invention has the following advantages: an underground pressure accumulation rule after a simulated reservoir gas drilling shaft is obstructed and a shaft gas-solid two-phase transient flow rule after obstruction is released accord with actual conditions, the representativeness is high, and the guidance significance for analyzing an underground safety risk mechanism is quite good.

The invention relates to a frictional wear characteristic test device and method for joint curved junction surfaces. The test device comprises a friction test device body and a signal collecting, analyzing and processing system. The friction test device body is composed of a loading system, a test junction surface system, a guiding and supporting system, a signal detecting system and a supporting power system. Structural design with variable loads is adopted in a frictional wear characteristic test for the joint curved junction surfaces, a sensor detects torque signals in the rotating process to obtain frictional wear characteristics of the joint curved junction surfaces, and the test device is suitable for comparing and researching the frictional wear characteristics of the joint curved junction surfaces of different materials. As exchangeable parts to be tested are adopted, the frictional wear characteristics of the joint curved junction surfaces of the different materials can be measured through one test table, the use ratio of the test table is increased, the magnitude of loading force can be obtained visually, and the test device has great guiding significance in testing the frictional wear characteristics of the joint curved junction surfaces in engineering practice.

The invention discloses a chilling-free cultivating method of peaches in a greenhouse. Through a series of chilling-free cultivating technological means including the step of promoting flower buds to fully differentiate in advance, the step of spraying nutritional agents, shielding light and closing a plastic shed so as to make leaves fall, the step of spraying dormancy-breaking chemicals, controlling the temperature and promoting flowering, the step of spraying fruit-setting and branch-promoting agents to prevent secondary dormancy, the step of reasonably regulating and controlling the temperature and humidity, the step of manually compensating for light and the step of applying carbon dioxide fertilizer, the mature period of peaches in the greenhouse is greatly brought forward. The method has the advantages of being wide in suitable variety range, high in operability, accurate in regulation and control, high in increased benefit and the like, is suitable for being applied to greenhouse precocity promoting cultivation of most of middle-early ripen peaches with a chilling requirement of 700 hours or fewer in present production, also has quite high guidance significance in regulating the mature period of other northern fruit trees, and makes peaches in the greenhouse ripen as early as possible and appear on the market before the spring festival, the peaches can meet the requirements for the spring festival consumer market and sightseeing and picking, the sale price is several times to ten times or more the price of peaches appearing on the market in April and May, and the benefit increase is quite remarkable.

The invention discloses an error vector amplitude determining method, wherein the method comprises the following steps of: adding non-ideal characteristic parameters for a signal in the signal modulation process, and transmitting a modulated signal; demodulating the transmitted signal; and determining an EVM (Error Vector Magnitude) according to the demodulated signal and ideal demodulated signals. Simultaneously, the invention discloses an error vector amplitude determining device, which comprises a modulating unit, a transmitting unit, a demodulating unit and a determining unit, wherein the modulating unit is used for adding the non-ideal characteristic parameters for the signal in the signal modulation process, the transmitting unit is used for transmitting the modulated signal, the demodulating unit is used for demodulating the transmitted signal, and the determining unit is used for determining the EVM according to the demodulated signal and the ideal demodulated signals. The invention further discloses a signal transmitter. The performances of each relational processing unit in the transmitter can be designed according to the analysis result of the EVM and the excellent transmitter can be designed so that the transmitting performances of the devices using the transmitters can be ensured; and the signal transmitter has good directive function for theoretical research or engineering practice.

The invention relates to a Chinese herbal medicine compound bait, as well as a preparation method and application of the Chinese herbal medicine compound bait. The Chinese herbal medicine compound bait comprises the following Chinese herbal medicine components by weight percent: 20-30% of radix pseudostellariae, 5-10% of cordyceps sinensis, 10-15% of lycium chinense, 10-15% of clove, 10-15% of honeysuckle, 10-15% of radix bupleuri, 5-10% of liquorice, 5-10% of radix astragali, 1-5% of poria cocos and 1-5% of borneol; and the Chinese herbal medicine compound bait comprises the following basic bait components by weight percent: 30-35% of sea mud, 10-15% of kelp meal, 4-6% of shell powder, 10-15% of sargassum thunbergii powder, 0.5-1% of spiral seaweed, 3-5% of fish meal, 3-5% of vegetable protein, 1-3% of shrimp meal, 2-3% of scallop skirt, 0.6-0.8% of yeast tablets, 2-2.2% of composite mineral salt and 1.8-2% of multivitamin. The Chinese herbal medicine components are mixed into the basic bait components according to the ratio of 2-5%, and the mixture has the particle size of 250-300 meshes. The Chinese herbal medicine compound bait provided by the invention is capable of obviously increasing the weight gain rate and survival rate of stichopus japonicus, reducing the splanchnic ratio, and improving the immunity of the stichopus japonicus; and the Chinese herbal medicine compound bait is free from toxic and side effects, can be used for remarkably improving the 'skin ulceration syndrome' resistance of the stichopus japonicus and has the advantages of reducing the food coefficient as well as NH3-N content and chemical oxygen demand (COD) content in aquaculture water, and the like, thus having good guiding significance for increasing the yield of stichopus japonicus aquaculture and the prevention and treatment of diseases.

The invention discloses a roller kiln temperature prediction integrated modeling method capable of combining a mechanism with data. The method comprises the following steps that: through the analysis of factors which affect temperature change, from a perspective of the temperature change and energy, establishing a mechanism model; then, considering situations that roller kiln sintering is a very complex process, a whole sintering process can not be described through a single mechanism model and the mechanism model has model errors through simplification, establishing a data model to predict model errors so as to make up mechanism output, i.e., utilizing errors to serve as a training sample to establish an error prediction model of a nonlinear time-varying process based on local weighted kernel principal component regression; and finally, combining the mechanism model with the data model to establish a roller kiln temperature prediction integration model. By use of the model, the state change of a process can be better tracked, and a good guidance function is provided for roller kiln temperature control so as to improve the production quality and the percent of pass of a product.

The invention provides a software clustering-based source code function search method. The method comprises the following steps of: inputting a source code; carrying out grammar inspection on the source code and acquiring class information of the source code; and completing a search process through two modules, wherein the two modules comprise a software clustering module and a function search module, the software clustering module is used for screening an entity from acquired class information, constructing an entity index, extracting a feature, constructing a feature vector, screening information through hierarchical clustering, and storing a result, and the function search module is used for constructing an input set from the acquired class information, completing subject analysis, constructing an index and storing the index. The method provided by the invention can effectively enhance the software clustering result, and has good guiding function in the aspects of practical source code reading and system maintenance. Developers can use the method to guide the previous exploration, accelerating project understanding and enhance the development efficiency. And through further development, the method can be used for completing the multiplexing of function modules.

The invention discloses an online transformer state evaluation and analysis method based on an artificial intelligence technology, and belongs the field of power technologies. The method comprises that an integrated online transformer diagnosis system is established, and a historical fault information module, a real-time data collection module, a fault sensing and analysis module, an artificial intelligence analysis module, an online transformer evaluation and analysis module and an MMI (Man-Machine Interface) are established in a processing server of a data center. The technical problems thatfault report mistakes are too many, online monitoring data is not utilized and analyzed sufficiently and operation staff cannot be guided effectively in the prior art can be solved. The method can beused to improve the reliability of online transformer monitoring and equipment state evaluation, the false alarm rate and the alarm omission rate of equipment are reduced, and the labor intensity ofthe operation staff is reduced.

The invention discloses an intelligent monitoring and feedback control system of comprehensive indoor environment. The system comprises an intelligent terminal, a network device and a computer control device, wherein the intelligent terminal is connected to the network device through wireless or wire signals, the network device is connected to the computer control device through wireless or wire signals, the system is convenient to operate, and comfortable requirements of human body sense can be met through the lighting control , the audio playing, the video playing, temperature and humidity control, indoor air quality control and the oxygen content control. Environment themes which are embedded by the system or defined by users can be selected to adjust corresponding environment, indoor devices relating to environment factors can be adjusted dynamically, the system comprises a simulated medical equipment model, a patient can simulate to be checked and cured on the model, the actual checking and curing which are required to be known by the patient can be guided well, the working, life and medical environment of persons can be improved, and the system is benefit to physical health and mental health of users, environment-friendly and energy-saving.

The present invention discloses a key size automatic extraction method in three dimensional human body measurement. The method comprises the following steps of 1) scanning and obtaining the three dimensional point cloud data of the human body morphology via a high definition camera, segmenting the obtained human body right side and side images by the super-pixel segmentation, and further extracting and measuring the edge coordinate points of a cross-section in which the human body key size is located according to the curvature; 2) automatically transforming the three dimensional point cloud data into the two-dimensional image data, wherein the two-dimensional image data comprises a right side projection image, a side projection image and a backside projection image, and standardizing and adjusting the two-dimensional image data. The method of the present invention can better solve a human body contour accurate extraction problem, has the very good guidance and reference significance for the three dimensional measurement in the other application fields, and has a certain application value.

The invention discloses a measuring method for the motion resistance coefficient of cross-country roads. The measuring method comprises the steps of (S1) measuring a relation Eta2 between the efficiency and the speed of an action system of a caterpillar vehicle; (S2) obtaining a driving torque T by using the driving torque of an engine under different speeds to deduct the loss of an auxiliary system; and (S3) calculating the motion resistance coefficient of the cross-country roads according to the formula, namely f=(tEta1Eta2/r-FA)/G, wherein f is the motion resistance coefficient, Eta1 is the efficiency of an engine transmission system, r is the radius of a driving wheel of the caterpillar vehicle, F is the air resistance applied to the vehicle, and G is the weight of the caterpillar vehicle. The measuring method disclosed by the invention has the advantages that by a simple and effective method, the factors such as the internal resistance of the action system and the influence on the resistance coefficient caused by the speed are considered, so that the motion resistance coefficient of the cross-country roads is accurately measured; and the measuring method has good guiding significance on application and research of engineering.

The invention discloses a liquid identification device and a liquid identification analysis method thereof, and belongs to the technical field of daily articles. The liquid identification device comprises a liquid container, a prism, a light source, an optical sensor and a control circuit board, wherein the prism is arranged at an opening in the lower end of the liquid container, the light source and the optical sensor are respectively arranged on two sides of the prism, and the control circuit board is respectively electrically connected with the light source and the optical sensor; and the light source is an LED light source group which can be used for emitting more than one different wavelengths. According to the liquid identification device disclosed by the invention, the types of drinking liquid in the liquid container can be identified by virtue of a liquid detection system which consists of the prism, the light source and the optical sensor; and meanwhile, the drinking liquid which is filled in a period of time can be subjected to statistical analysis, and thus users can be well guided to balance the drinking quantity and nutrition of a beverage.