32results about How to "Realize comparative analysis" patented technology

The invention discloses a real-time monitoring method for growth characters of tea trees in intensive cultivation. The method comprises the following steps: performing real-time data acquisition by a tea tree living body growth character data acquisition device based on online location, transmitting the acquired data to an artificial comprehensive management center through a wireless communication way to process, wherein the acquired data comprises current location data acquired by a locating mechanism, fresh tea leaves spectrum data acquired by a high spectrum imaging sensor, and average growth height of fresh tea leaves measured by an ultrasonic wave sensor, and judging the best fresh tea leaf picking time based on that the data and a picking judgment model established off line are combined by the artificial comprehensive management center. The picking judgment model comprises a bud size growth measurement model based on average growth height, a yield correlation model and a quality correlation model based on the high spectrum image data. The real-time monitoring method for the growth characters of the tea trees in intensive cultivation is beneficial to realizing of intensive cultivation and automation in planting of the tea trees.

The invention discloses a device for data acquisition of fertility characteristics of a tea tree living body based on online positioning. Four vertical supporting rods (2) are arranged on four corners of a rectangle covering the tea tree plantation zone; a colored mark (3) is arranged at the top end of each supporting rod; a guide rail (1) is arranged on each of the two long sides of the rectangle; four pulleys and a motor (20) used for driving the supporting rods are arranged at the bottom of a frame (5); an omnibearing visual sensor (9) is fixed onto a tripod (12) arranged at the top end of the frame; a computer (7), a storage battery (8), an ultrasonic sensor (16) and a wireless transmitter (14) are further arranged on the frame; a hyperspectrum sensor is also arranged at the top of the frame; the device for data acquisition of fertility characteristics of the tea tree living body based on online positioning has the characteristic of high automation degree, so as to provide infrastructure for fine plantation of tee trees.

The invention relates to a method for determining loss of an MMC isolation type DC / DC converter switch. The method comprises that parameter fitting for a switch loss characteristic curve of an MMC neutron module power device is carried out; the switch loss energy of a sub module power device at the operation junction temperature is calculated by utilizing an interpolation method; the average switch loss of a single power device is determined; switch loss type distribution of an MMC-DC / AC / DC converter in an AC period is determined; the average switch loss of single-phase upper and lower arms of an input end MMC converter is determined; the switch loss of all power devices of the MMC-DC / AC / DC converter is determined. According to the switch loss equivalent displacement method, an analysis expression for isolation type DC / DC converter switch loss based on a modular multilevel converter is effectively solved, and the MMC-DC / DC converter switch loss value calculation method is disclosed. Quantitative analysis on isolation type MMC-DC / DC converter switch loss is facilitated, and system parameter optimization design programs are conveniently realized and integrated.

The invention discloses an electronic commerce financial management system comprising a logistics enterprise terminal, a server, a client end and a material supply enterprise terminal, wherein connection between the logistics enterprise terminal and the server, connection between the server and the client end and connection between the server and the material supply enterprise terminal is realized via the Internet; the client end is used for inputting types, weight, volume, places of departure, destinations and acceptable price ranges of goods that need to be transported; the client end is also used for inputting types, quantities, basic requirements and acceptable price ranges of goods that need to be purchased; the server is used for receiving all kinds of transport case information input via the logistics enterprise terminal, received data is stored in a database after being classified, and the server is also used for receiving all kinds of goods information input via the material supply enterprise terminal and storing received data in the database after the received data is classified. Via the electronic commerce financial management system, overall management of financial information of a shop can be realized, and workload of a user can be greatly reduced.

The invention discloses a three-dimensional information comparative analysis method based on gas chromatography-mass spectrometry analysis data. The three-dimensional information comparative analysis method comprises the steps of: 1, superposing a total ion chromatorgraphy and a mass spectrogram of a sample obtained by a gas chromatography-mass spectrometry combined instrument to obtain a three-dimensional omnibearing spectrogram of the sample, wherein the three-dimensional omnibearing spectrogram regards retention time, mass-to-charge ratio and abundance as three-dimensional coordinate axes; 2, performing comparative superposition or differentiation deduction on three-dimensional omnibearing spectrograms of different samples to further perform characteristic analysis on spectrograms of the samples and realize comparative analysis on components of different samples; and 3, analyzing overlapped peaks. The three-dimensional information comparative analysis method based on the gas chromatography-mass spectrometry analysis data, disclosed by the invention, has the advantages of being able to realize comparative analysis on components of different samples and component analysis on the overlapped peaks.

The invention relates to a method for determining on-state loss of a modularized multilevel converter. The method comprises the steps of determining IGBT (Insulated Gate Bipolar Transistor) on-state loss in single-phase upper and lower bridge arms of the modularized multilevel converter; determining diode on-state loss in the single-phase upper and lower bridge arms of the modularized multilevel converter; and determining three-phase on-state loss of the modularized multilevel converter. According to the method, an analytic expression of the on-state loss of the modularized multilevel converter is effectively solved based on instantaneous currents of an IGBT and a diode, thereby facilitating quantitative analysis of the on-state loss of the MMC (modularized multilevel converter) and bringing convenience for system optimization design.

The invention discloses a system combat ability quantitative analysis method based on a super network and an OODA ring theory. The method comprises: establishing a super-network model according to a combat system, the super network comprises four types of nodes and seven types of edges; the four types of nodes are respectively detection nodes VO, decision node VD, striking a node VA and a target node VT; wherein the seven types of edges are respectively a detection relationship ETO representing that the target node can be detected by the detection node; representing a cooperative relationshipEOD that the detection node sends the target information to the decision node; representing a command and control relationship EDA that the decision node directs the striking node to strike; representing a strike relationship EAT that the strike node attacks the target node; wherein the EOO represents the information transmission and sharing relationship of information sharing between the detection nodes, representing the superior-subordinate command relationship EDD of the superior-subordinate relationship between the decision nodes, and representing the cooperative strike relationship EAA ofthe strike nodes to strike the same target cooperatively; constructing an adjacent matrix according to the super network; and calculating the comprehensive capability of the system according to the adjacent matrix characteristic values.

The invention discloses a simulation system capable of reproducing soot evolution characteristics under a post-injection strategy of an engine, which comprises a soot generator, an electric cylinder controller, a computer control system, a Mckenna diffusion combustor fixed on a displacement bench and a pair of self-locking tweezers arranged above the Mckenna diffusion combustor, and is characterized in that a central steel pipe of the Mckenna diffusion combustor is connected to a gaseous fuel source through a pipeline, air inlet pores of a plurality of metal sintered plates at the periphery of the Mckenna diffusion combustor are all connected to an air inlet main pipeline which is connected with a nitrogen gas cylinder and an oxygen gas cylinder; a coiled pipe is connected to a constant temperature water tank; an in-line electric cylinder connected with the self-locking tweezers realizes connection with the electric cylinder controller through a motor and a programming data line, and model carbon black in a carbon black container is taken into a gas channel through a rotating steel brush under driving of a piston. The simulation system disclosed by the invention can facilitate to simplify research for formation and conversion mechanisms of soot generated under the post-injection strategy of the engine, thereby providing a scientific basis for preventing atmosphere environment pollution.

The invention provides a chemical method for analyzing carbon concentration depth distribution in a steel part carburized layer and the depth of the carburized layer. According to the chemical method, the distribution of the carbon concentration on a section of the carburized layer is analyzed by a laser induction spectrum to realize the checking on a carburizing heat treatment effect on a steel part. An analysis process comprises the following steps: taking a section sample on a testing part subjected to carburizing treatment and embedding and polishing the section sample; carrying out a linear scanning analysis on an outline line vertical to a carburized surface under an optimal instrument parameter condition; and calculating the carbon concentration of each point according to a correction curve and determining the depth value of each point according to curve change characteristics and testing parameters to obtain the carbon concentration depth distribution and the depth value in the carburized layer. Compared with an existing chemical analysis method, the method is not limited by shapes and specifications of the part; an analysis sample is easy to prepare and the distribution of carbon in the carburized layer and the depth of the carburized layer can be determined rapidly, directly and accurately; the chemical method is particularly used for rapidly analyzing the part with the complicated shape.

The invention discloses a forklift safety protection and intelligent training and examination system. The system comprises a training site, a forklift, a proximity sensor, a signal collector, a remote control, and a principal computer for monitoring. The proximity sensor is arranged within the boundary of the training site. The signal collector and the principal computer for monitoring are connected by means of wireless transmission. The forklift is internally equipped with a PLC, a forklift automatic braking device, a gray scale sensor and a flameout switch, wherein the PLC is arranged at the tail of the forklift, the flameout switch and the forklift automatic braking device are arranged inside the forklift, and the gray scale sensor is fixedly arranged under the forklift. With the system, the driving route information of the forklift can be collected in real time, the driving condition of the forklift can be displayed in real time and analyzed comparatively, the forklift can brake under emergency, and the objectivity of evaluation is promoted.

The invention provides a construction method of a main distribution network planning management tool based on graphics, which utilizes power grid planning management data to complete data integrationand layer preparation, then superposes and integrally displays the data and the layers on a GIS platform, and provides a precise technical auxiliary means for project planning design and review in a graphical visual mode. The main distribution network planning management tool based on the graphics is constructed by adopting the method provided by the invention. Digital panoramic display, analysisand support of historical evolution of a 35kV and above power transmission network and a penetration planning project can be realized, comparative analysis of power transmission network planning statediagram file data is realized, and decision auxiliary support is provided for planning power transmission network transformer substation site selection and constant volume and line planning design.

The invention discloses a plant growth environment adjusting system in an intelligent control system, and relates to the technical field of agriculture. The plant growth environment adjusting system comprises a monitoring unit. The output end of the monitoring unit is electrically connected with the input end of a multi-node input module. The monitoring unit comprises a temperature sensor, a soilhumidity sensor and a soil PH value sensor. The output end of the temperature sensor, the output end of the soil humidity sensor and the output end of the soil PH value sensor are all electrically connected with the input end of the multi-node input module. According to the plant growth environment adjusting system, the humidity, PH value and temperature in the plant growth environment can be adjusted in real time by an irrigation unit, a PH adjusting unit and a temperature control unit respectively, and therefore the real-time control over the plant growth environment is realized; in addition, under the cooperation of a comparing module and a PID closed-loop control module, the difference value comparison between current conditions in the environment and the normal value range is more accurate, and therefore it is ensured that the plant growth environment adjusting system is more suitable for adjusting the plant growth environment.

The invention discloses a marketing and distribution topology file synchronization management system and method. The system comprises a topology file generation module for generating corresponding topology files according to original file data of different business systems and distinguishing and recording attributes of different types of topology files, and a topology file import module for realizing import of different types of topology files across the business systems; a topology version management module used for identifying versions of different types of topology files and realizing comparison, analysis and query management of the topology files of each version. The method comprises a topology file generation step, a topology file import step and a topology version management step. According to the invention, fine management of station line transformer substation topology archives of different business systems of a power grid is realized; and meanwhile, through carrying out consistency and accuracy comparative analysis on the archive data of each type and each period, statistics, calculation, analysis and monitoring of marketing line loss data can be supported, so that the lean management level of the line loss is improved.

The invention relates to an underground space safety prevention and control system and method, the system comprises a monitoring service center, a plurality of monitoring node servers, a plurality of monitoring parts and a global collector, the monitoring service center is respectively connected with the plurality of monitoring node servers and the global collector, each monitoring node server is correspondingly connected with one monitoring part, and the global collector is connected with the plurality of monitoring parts. The system can achieve the timely safety prevention and control of the underground space, and can accurately monitor the topographic change of the underground space.

The invention discloses a surface gear machining measuring tool. A base is arranged at the bottom of a measuring tool body, a shaft seat is arranged in the middle of the base, a fixing part is arranged at the top of the shaft seat, a rotating shaft is arranged at the bottom end of the fixing part, a rotating disc is arranged at the top end of the rotating shaft, a sliding groove is formed in the periphery of the interior of the rotating disc, a sliding rod is arranged inside the sliding groove, a threaded rod is arranged at the top end of the sliding rod, a fixing sleeve is arranged on the outer side of the threaded rod, an adjusting groove is formed in the outer side of the fixing sleeve, the top of the rotating disc is provided with a surface gear, the rear side of the fixing part is provided with a first measuring tool body, second measuring tool bodies are arranged on the left side and the right side of the fixing part, and trundles are arranged at the bottom of the base. Accordingto the surface gear machining measuring tool, the threaded rod is fixedly connected with the fixing sleeve through threads, the operation is simple, the height of the fixing sleeve can be properly adjusted so as to meet the requirements of the surface gears with different thicknesses, the effects of being flexible, convenient and fast are achieved, the fixing effect of the fixing part is enhanced, and the accuracy of the measuring result is guaranteed.

The invention belongs to the oilfield project economic evaluation technical field and relates to the post evaluation system for oil and gas field projects. The post evaluation system for the oil and gas field projects includes a data filling module, a data transfer module and a data analysis module; the data filling module provides an interface for basic data entry and is used for inputting data required by the data analysis module and a historical data query module; the data transfer module is used for screening the data inputted by the data filling module, returning inputted wrong data to the data filling module and transferring inputted correct data to the data analysis module and the historical data query module; and the data analysis module performs comparison, statistics and comprehensive analysis on the data. Thus, the implementation conditions of the oil and gas field projects can be evaluated.

The invention relates to a method for determining loss of an MMC isolation type DC / DC converter switch. The method comprises that parameter fitting for a switch loss characteristic curve of an MMC neutron module power device is carried out; the switch loss energy of a sub module power device at the operation junction temperature is calculated by utilizing an interpolation method; the average switch loss of a single power device is determined; switch loss type distribution of an MMC-DC / AC / DC converter in an AC period is determined; the average switch loss of single-phase upper and lower arms of an input end MMC converter is determined; the switch loss of all power devices of the MMC-DC / AC / DC converter is determined. According to the switch loss equivalent displacement method, an analysis expression for isolation type DC / DC converter switch loss based on a modular multilevel converter is effectively solved, and the MMC-DC / DC converter switch loss value calculation method is disclosed. Quantitative analysis on isolation type MMC-DC / DC converter switch loss is facilitated, and system parameter optimization design programs are conveniently realized and integrated.

The invention provides a Mars capture braking strategy calculation method and system, and relates to the technical field of spacecraft overall design, and the method comprises the steps: S1, collecting related data of a hyperbolic progressive vector entering Mars, earth pointing and sun pointing, and building an auxiliary coordinate system; s2, calculating and capturing a semi-major axis of an orbit through the established auxiliary coordinate system; s3, calculating the eccentricity rate of the captured orbit through the established auxiliary coordinate system; s4, calculating and capturing an orbit inclination angle, an ascending node right ascension and a near fire point argument through the established auxiliary coordinate system; and S5, calculating related included angles with the earth and the sun through the established auxiliary coordinate system, and carrying out contrastive analysis on conditions including energy and communication in the capture stage according to related data obtained through calculation. According to the method, the calculation speed of the captured orbit parameters and the design efficiency of the Mars capture strategy can be improved.

The invention relates to an intelligent metering and dish selecting system comprising a tray machine, an intelligent dish selection table and trays. The tray machine comprises a chassis, the trays have built-in radio frequency chips, a tray outlet is arranged in the middle of the chassis, and an RFID code reader is installed at the tray outlet and is connected to a PLC. Signal input ends of a lifting motor and a servo motor are connected to a signal output end of the PLC, a controller memory of the PLC is connected to a local database, and a WEB management platform is connected to the local database. The intelligent metering and dish selecting table comprises a dining table frame body and a host machine. A plurality of dish basin grooves are arranged in the lower part of the dining table frame body, a dish basin is arranged in each dish basin groove, a weighing sensor is installed in the bottom of each dish basin groove, and a signal output end of each weighing sensor is connected to asignal input end of the host machine. An RFID code reading device is arranged on a box beside dish basin grooves, and the weighing sensor and a signal output end of the reading device which reads theRFID radio frequency chips are connected to the local database.

The invention discloses a handheld flue gas particulate matter sampling device and method. The handheld flue gas particulate matter sampling device comprises a cavity and a detection assembly arrangedin the cavity, the detection assembly comprises a protection plate and a smoke guide pipe, the protection plate defines a smoke channel, the smoke guide pipe is connected to the center of the smoke channel, the smoke channel is divided into N sections, the N sections are marked as a first channel, a second channel... an Nth channel, the N sections of smoke channels form a vortex structure, and adsorption holes are formed in the inner walls of the N sections of smoke channels. A plurality of first adsorption holes are formed in the inner wall of the first channel, a plurality of second adsorption holes are formed in the inner wall of the second channel,..., a plurality of Nth adsorption holes are formed in the inner wall of the Nth channel, and the sizes of the first adsorption holes, thesecond adsorption holes and the third adsorption holes are gradually increased in sequence; the protection plate is of a hollow structure, a base layer is arranged in the protection plate, an adsorption layer is arranged on one side of the base layer, and the adsorption layer can adsorb particles in flue gas; a smoke inlet is formed in one end face of the cavity, the smoke inlet is connected witha port of the first channel, smoke sequentially flows through the first channel, the second channel... the Nth channel from the smoke inlet to a smoke guide pipe, the smoke guide pipe is connected with a draught fan, and the draught fan can lead out the smoke in the smoke channel.

The invention discloses a simulation system capable of reproducing soot evolution characteristics under a post-injection strategy of an engine, which comprises a soot generator, an electric cylinder controller, a computer control system, a Mckenna diffusion combustor fixed on a displacement bench and a pair of self-locking tweezers arranged above the Mckenna diffusion combustor, and is characterized in that a central steel pipe of the Mckenna diffusion combustor is connected to a gaseous fuel source through a pipeline, air inlet pores of a plurality of metal sintered plates at the periphery of the Mckenna diffusion combustor are all connected to an air inlet main pipeline which is connected with a nitrogen gas cylinder and an oxygen gas cylinder; a coiled pipe is connected to a constant temperature water tank; an in-line electric cylinder connected with the self-locking tweezers realizes connection with the electric cylinder controller through a motor and a programming data line, and model carbon black in a carbon black container is taken into a gas channel through a rotating steel brush under driving of a piston. The simulation system disclosed by the invention can facilitate to simplify research for formation and conversion mechanisms of soot generated under the post-injection strategy of the engine, thereby providing a scientific basis for preventing atmosphere environment pollution.

The invention provides an error test system and method for a digitized metering device. The error test system and method can meet requirements for whole error test and dissemination of the value of quantity of the digitized metering device in a semi-breaker wiring mode, and can simultaneously test and compare the whole error and the sum of a single error of an electronic transformer and a single error of a digitized electric energy meter by changing characteristic error influence quantity of the digitized metering device. The test system comprises the digitized metering device, a traditional standard current transformer, a three-phase electronic transformer calibrator, a three-phase standard digitized electric energy meter, a traditional three-phase standard electric energy meter and a three-phase test power supply used for outputting an electric load; the test method based on the test system compares and analyzes the whole error and the sum of single errors of dissemination of the value of the quantity in the digitized metering device by independently testing the whole error, the error of the electronic transformer and the error of the tested three-phase digitized electric energy meter, specific sources of the errors are determined, and operation and regulation are conducted according to actual working conditions.

The present invention relates to a method and system for reasonable operation efficiency evaluation through coordination of safety and development of a transmission network. The method comprises the following steps: collecting the basic data of a power grid electric power system to be evaluated; improving the power supply load level of the power grid to be evaluated, and analyzing and obtaining the trend data of the power grid to be evaluated in a typical large mode under different load levels after power supply load is increased based on the current actual typical large mode trend data of the power grid to be evaluated; evaluating the relation of a power failure risk level and a power grid utilization efficiency level under different power supply load levels of the power grid; determining the limitation operation efficiency of the power grid to be evaluated according to the relation of the power failure risk level and a power grid utilization efficiency level under different power supply load levels of the power grid and a risk efficiency incremental ratio index; and calculating the reasonable transmission efficiency of the power grid to be evaluated, and performing evaluation of the actual operation efficiency of the power grid to be evaluated. The method and system for reasonable operation efficiency evaluation through coordination of safety and development of the transmission network can be widely applied to the evaluation of the power grid transmission network utilization efficiency.

The invention discloses a real-time monitoring method for growth characters of tea trees in intensive cultivation. The method comprises the following steps: performing real-time data acquisition by a tea tree living body growth character data acquisition device based on online location, transmitting the acquired data to an artificial comprehensive management center through a wireless communication way to process, wherein the acquired data comprises current location data acquired by a locating mechanism, fresh tea leaves spectrum data acquired by a high spectrum imaging sensor, and average growth height of fresh tea leaves measured by an ultrasonic wave sensor, and judging the best fresh tea leaf picking time based on that the data and a picking judgment model established off line are combined by the artificial comprehensive management center. The picking judgment model comprises a bud size growth measurement model based on average growth height, a yield correlation model and a quality correlation model based on the high spectrum image data. The real-time monitoring method for the growth characters of the tea trees in intensive cultivation is beneficial to realizing of intensive cultivation and automation in planting of the tea trees.

The present application provides a method for constructing a graphical-based main distribution network planning and management tool, which utilizes power grid planning and management data, and after data integration and layer preparation are completed, the data and layers are superimposed and integrated on the GIS platform to display the data and layers. Graphical and intuitive methods provide precise technical assistance for project planning, design and review. The graphical-based main distribution network planning and management tool constructed by the method of the present application can realize the digital panoramic display, analysis and support of the transmission network of 35kV and above and the historical evolution of the planning project, and realize the planning status map data of the transmission network. Carry out comparative analysis to provide decision-making support for planning the location and capacity of substations in the planning transmission grid, and route planning and design.