38results about How to "Reflect the real state" patented technology

The invention discloses a volume fracturing construction parameter optimization design method for an unconventional oil and gas reservoir infill well. The optimization design method comprises the following steps: S1, establishing a three-dimensional geologic model with physical and geomechanical parameters; S2, establishing a natural fracture network model by integrating rock core-logging-seismicdata; S3, generating an old well hydraulic fracturing complex fracture based on the natural fracture model; S4, establishing a three-dimensional shale gas reservoir seepage model; s5, establishing a three-dimensional geomechanical model; s6, analyzing and calculating a dynamic crustal stress field; s7, establishing an infill well horizontal fracturing complex fracture numerical model based on theold well complex fracture and the dynamic crustal stress calculation result; and S8, optimally designing volume fracturing construction parameters of the infill well. The method has the beneficial effects that the influence of the long-term exploitation process of the shale reservoir with natural fracture development on the volume fracturing of the infill well can be accurately reflected, the fracturing construction parameters of the infill well are optimally designed, the fracturing effect is effectively improved, and the single-well productivity is increased.

The invention discloses an active cell pack equalization control system based on cell energy state estimation. According to the system, an equalization circuit topology based on multiple transformers can employ multiple control variables, direct parallel operation of an equalization charging and discharging process can be carried out, and equalization efficiency is improved. SOE energy can more accurately reflect an actual cell state, a cell SOE is employed as a control variable to solve disadvantages generated as a voltage or SOC is simply taken as an equalization control variable in an equalization control strategy in the prior art, equalization control precision is improved, cell energy after equalization can be precisely kept to be consistent, and an energy utilization rate of a cell pack can be maximized. A dual invariant embedding method is utilized to realize online identification of cell parameters and estimate a cell state in real time, SOE estimation precision can be effectively improved, equalization control precision is further guaranteed, and the equalization effect is optimized.

The invention relates to a relaxation voltage characteristic-based battery internal short circuit diagnosis method, which comprises the following steps of: 1) obtaining a relaxation voltage curve of each battery monomer in a battery after unloading current under the same battery condition; (2) carrying out feature extraction on the relaxation voltage curve of each single battery to obtain corresponding curve features, and (3) judging whether the single batteries have internal short circuits or not according to the curve features to complete diagnosis. Compared with the prior art, the method has the advantages of short detection time, high accuracy and the like.

The invention discloses a four-dimensional dynamic ground stress simulation method which comprises the following steps: S1, establishing a three-dimensional geologic model; S2, establishing a three-dimensional oil reservoir model and predicting a three-dimensional pore pressure field and a temperature field at different stages by utilizing production / injection dynamic parameters; S3, establishing a three-dimensional ground stress model; S4, forming an initial ground stress field; S5, establishing a four-dimensional dynamic ground stress model according to an initial three-dimensional ground stress filed model by taking the dynamic three-dimensional pore pressure field and the temperature field; S6, making a seepage-stress coupled solution and analyzing and calculating dynamic ground stress and pore elasticity parameters used for guiding wells engineering practice. The method has the beneficial effects that the changing situations of the dynamic ground stress and the pore elasticity parameters in an oil and gas exploitation process can be accurately reflected, so as to provide guidance for refracturing of old wells and drilling and completion operation of new wells.

The invention discloses a chance frequency spectrum access method based on the tri-state learning strategy and in cognitive radio. The method includes that a cognitive user conducts fit goodness test on a current target information channel. A detection result in each time slot includes three states: the free state, the occupation state and the transition state. Suppose that the free state and the occupation state of a main user submit to the exponential distribution, and the cognitive user utilizes a hidden markov model to dynamically adjust information channel utilization parameter of the main user. The cognitive user utilizes estimation parameter to calculate change frequency spectrum access information channel capacity and determines to select the current information channel or enter the next information channel. The cognitive user updates the current confidence vectors according to the markov decision-making process which is partially observable and determines whether to send data at the time slot. The chance frequency spectrum access method based on the tri-state learning strategy can effectively improve information channel utilization rate of the cognitive user, accurately reflects true state of an authorization information channel accordingly, remarkably reduces delay when the information channel is accessed or quits, and simultaneously reduces interference of the main user.

The invention discloses a simulation teaching and training system for a production device. The system comprises a production equipment area, a process monitoring and operating room and a simulation system, wherein, all equipment in the production equipment area is formed by means of reduction based on a certain proportion, and adopts a proper amount of real instruments and valves for a plant; the process monitoring and operating room is a real central control room and can be operated and organized by a DCS (distributed control system); and the simulation system forms equipment performances, process reaction and engineering properties during the chemical process through a computer system. The process monitoring and operating room is internally equipped with a control system; an output signal generated by real-time analog computation of the simulation system is transferred to the control system through a terminal block of an on-site display instrument or transmitter (can be an empty shell), and the output signal is directly transferred to an on-site actuator; and the simulation system transfers an operating signal from the control system to the actuator.

The invention relates to the field of particle material treatment, in particular to an intelligent grab crane control system based on material imaging and a control method for the intelligent grab crane control system. The control system comprises a stacking bin, an unloading bin, an intelligent grab bucket, an imaging device and a control center. A feeding channel and a discharging gate are arranged above the stacking bin, and a plurality of height base lines which are longitudinally arranged are arranged on the side surface in the stacking bin. The height base line at the topmost end is a stock bin top line, and the feeding channel and the discharging gate are arranged above the stock bin top line. The intelligent grab bucket comprises a cart for controlling the grab bucket to move transversely, a trolley for controlling the grab bucket to move longitudinally, a crane for controlling the grab bucket to ascend and descend and the imaging device used for material pile imaging. The intelligent grab bucket obtains image data of the stacking bin and the unloading bin in real time through the imaging device and moves according to a moving path given by the control center. The imaging device comprises a height line recognizer and a laser scanning device.

The invention discloses a true triaxial device for testing rock temperature and a heat conductivity coefficient under stress variation. The device comprises a triaxial cell and a temperature heating system; the temperature heating system closely encircles an external side wall of the triaxial cell; the temperature application values of the temperature heating system range from 10 DEG C to 150 DEG C; a thermometer is arranged above a side wall of the triaxial cell; an upper end and a lower end of the triaxial cell are respectively provided with an upper seat and a pedestal; a test space is enclosed by the triaxial cell, the upper seat and the pedestal; an upper end of a side wall of the test space is provided with an exhaust passage and a temperature sensor passage which are communicated with the exterior from inside to outside; and a lower end of the test space is provided with an oil pipeline and a wire arranging passage. The true triaxial device disclosed by the invention has the advantages that the structure is simple, the use is convenient and the accuracy is high. The invention further discloses a method of the true triaxial device for testing the rock temperature and the heat conductivity coefficient under the stress variation.

The invention discloses a sub-health online recognition and diagnosis method based on performance monitoring data, and belongs to the technical field of fault diagnosis. The method includes the stepsof establishing an initial model of a probability neural network state classification and calculating the threshold standard deviation, carrying out on-line monitoring and diagnosis classification onmonitored equipment by utilizing the current model, and further identifying and extracting sub-health state data and putting the sub-health state data into a sub-health state data set; if the sub-health data set to be recognized reaches a storage tolerance or a known state appears, pausing the storage work, subjecting all elements in the set to K-means clustering analysis to obtain a classification result, and clearing the storage space of the sub-health data set, combining the sub-health state data set after clustering analysis with a previous training sample, and updating to the initial model to obtain a new classification model; repeating the previous steps to identify the sub-health state, and carrying out timely maintenance when the fault state occurs. According to the method, timelyand effective measures are adopted according to the state of the equipment, and loss caused by faults is reduced.

The invention discloses a method for determining a fracturing dynamic microseism event barrier region of an unconventional reservoir infill well. The method comprises the following steps: S1, establishing a three-dimensional geological model with physical and geomechanical parameters; S2, establishing a natural fracture network model in combination with indoor rock core-logging-earthquake monitoring; S3, calculating hydraulic fracturing complex fractures of the early-stage production well; S4, establishing a shale gas reservoir model and calculating a current pore pressure field; s5, establishing a dynamic geomechanical model and calculating a dynamic crustal stress field; s6, calculating horizontal fracturing complex fractures of the infill well in different production time based on the early complex fractures and the current crustal stress field; and S7, analyzing the fracturing microseism event barrier area of the infill well and the dynamic change of the fracturing microseism eventbarrier area. The method has the beneficial effects that the influence of fracture development shale reservoir exploitation on densification well fracturing can be accurately reflected, the dynamic change of the microseism event barrier effect in the exploitation process is determined, and a reliable basis is provided for optimization of the densification opportunity and fracturing construction parameters.

The invention relates to a service and process-oriented digital comprehensive test state management method, which performs informatization management on various types of test information in a mode ofsoftware and databases on the basis of the traditional tabular state management method and develops a service and process-oriented digital comprehensive test state management system which is referredto as a comprehensive test state management system hereinafter to realize digital management for the comprehensive test state. Test process control, test state control, personnel information management and test state information data management are organically integrated into a whole, various process procedures are enabled to be clear and easy to understand, the operation is simple and clear, various types of test information are enabled to be automatically filed and reliably stored, and the various types of information are simple and convenient to query. Furthermore, reasonable association can also be realized, the synchronization, consistency and completeness of the information are ensured, information management and process control are enabled to be more standardized and rigorous, and remote testing can be supported.

The invention discloses a multiple primer group and a method for constructing a human B cell immune repertoire with the same on the basis of high-throughput sequencing and belongs to the field of molecular biological detection. The multiple primer group consists of a group of upstream primers and a group of downstream primers, and the upstream primers are formed by connecting a joint 1, a primer bar code 1, a sequencing primer 1 and specific primers V1-V18 designed for V regions (variable regions) in series; the downstream primers are formed by connecting a joint 2, a primer bar code 2, a sequencing primer 2 and specific primers Va, Vd, Ve, Vg and Vm designed for conserved sequences of gene C regions (constant regions) of IgA, IgD, IgE, IgG and IgM in series; sequences of the primer bar code 1 and the primer bar code 2 are different while the sequences of the sequencing primer 1 and the sequencing primer 2 are the same. By means of the method, a BCR (B cell receptor) immune repertoirecan be constructed on the basis of a DNA sample or an RNA sample, and diversity information of BCRs can be completely covered. The construction efficiency is high and the cost is low.

The invention discloses a disk resource fault detection method and system. The method comprises: before performing input / output (I / O) operation on a physical block on disk resources, inspecting a virtual file system, namely a proc system, and determining whether the disk resources are correctly mounted in a local machine; when determining whether the disk resources are correctly mounted in the local machine, performing the I / O operation; comparing return time of the I / O operation with a preset time threshold value; when the return time is smaller than the time threshold value, judging that the disk resources are normal and performing fault detection on next I / O operation; and when the return time is greater than or equal to the time threshold value, judging that the disk resources are faulted and modifying self-inspection parameters of a disk file system. Through the scheme, the real state of a disk can be accurately reflected and the disk with potential faults is processed.

The invention discloses a solar sail transient dynamic analyzing method for determining effective propulsion acceleration breakage. The solar sail transient dynamic analyzing method comprises the following steps: (1) establishing a solar sail finite element model; (2) entering the n-th solving moment and starting t from the t0+delta t; (3) calculating the rigidity matrix and the mass matrix of each sail area unit at the t moment under pre-stress according to the included angle of each sail area unit and the light pressure direction moment, thereby obtaining load of the area subjected to the light pressure of each sail area unit; (4) obtaining a global stiffness matrix Kt containing p units and the load row vector Ft as well as global mass m and the global mass matrix Mt; (5) calculating the final displacement, the final speed and the final acceleration of the t-th moment according to the final displacement, the final speed, the final acceleration at the (t-delta)-th moment, namely the initial conditions of the t-th moment as well as the global rigidity matrix and the load row vector at the t-th moment as well as the global mass matrix; (6) repeating steps (3)-(5) at the (t+delta t)-th moment until the final solving time tn; and (7) obtaining the breakage of the acceleration according to the results.

The invention relates to a method for determining a relationship between defects and fatigue performance based on nondestructive testing. According to the method, through the steps of nondestructive testing accurate positioning, high-cycle fatigue performance testing, fracture analysis, defect characteristic statistics and the like of defects in the material, the relationship between the characteristics such as the types, sizes, positions and distribution of the defects and the fatigue performance is determined, and the direct data support is provided for the acceptance standard of nondestructive testing of existing materials and new material products. According to the method, the defects are accurately positioned by adopting various nondestructive testing methods, and then subsequent fatigue performance testing and analysis are carried out, so the designability of defect characteristics is realized, the randomness of results is avoided, the number of fatigue performance tests is reduced, and the time and economic costs are reduced. According to the method provided by the invention, comprehensive quantitative analysis can be carried out on multiple parameters such as defect sizes,positions, types and distribution, and compared with a traditional method which can only carry out qualitative analysis on a single parameter, the obtained information is richer and more comprehensive, and the practicability is higher.

The invention discloses a simulation teaching and training system for a production device. The system comprises a production equipment area, a process monitoring and operating room and a simulation system, wherein, all equipment in the production equipment area is formed by means of reduction based on a certain proportion, and adopts a proper amount of real instruments and valves for a plant; the process monitoring and operating room is a real central control room and can be operated and organized by a DCS (distributed control system); and the simulation system forms equipment performances, process reaction and engineering properties during the chemical process through a computer system. The process monitoring and operating room is internally equipped with a control system; an output signal generated by real-time analog computation of the simulation system is transferred to the control system through a terminal block of an on-site display instrument or transmitter (can be an empty shell), and the output signal is directly transferred to an on-site actuator; and the simulation system transfers an operating signal from the control system to the actuator.

The invention relates to a radial sampling device for a thermal simulating furnace, which is characterized by comprising a top plate (1), a fire-resistant fiber (2), a plurality of steel pipes (3) and a bottom plate (4); the top plate (1) is fixedly connected with the bottom plate (4) through the steel pipes (3); the fire-resistant fiber (2) is arranged between the top plate (1) and the bottom plate (4); the top plate (1) is provided with an easily-disassembled / assembled gland (5); the top plate (1) is provided with a cross groove (11) and a through hole (12) positioned in the center of the cross groove; and the cross groove (11) and the through hole (12) penetrate through the top plate (1), the fire-resistant fiber (2) and the bottom surface of the bottom plate (4) from the top to the bottom. The radial sampling device has the following characteristics that: 1, a plurality of test samples can be placed; 2, the test samples are arranged in a radial shape, and the true state of a workpiece can be reflected; and 3, the sampling can be carried out at any time; and furthermore, the characteristics of a temperature field in the furnace are not influenced in a sampling process.

The invention provides a board card quality detection method, device and equipment and a readable storage medium, and the method comprises the steps: obtaining an image set of a to-be-detected board card, the image set of the to-be-detected board card comprises at least four board card images shot by different shooting methods; obtaining a to-be-detected board card image based on the image set of the to-be-detected board card; analyzing the quality of the board card image to be detected to obtain an image quality analysis result; according to the image quality analysis result, different processing modes are selected to carry out image enhancement processing on the to-be-detected board card image, and a processed board card image is obtained; and detecting the quality of the board card based on the processed board card image to obtain a quality detection result. According to the method, the real state of the board card can be reflected more clearly by the board card image entering the quality detection step through a layer-by-layer progressive method, so that the accuracy of a quality detection result is improved.

The invention discloses a solar sail transient dynamic analyzing method for determining effective propulsion acceleration breakage. The solar sail transient dynamic analyzing method comprises the following steps: (1) establishing a solar sail finite element model; (2) entering the n-th solving moment and starting t from the t0+delta t; (3) calculating the rigidity matrix and the mass matrix of each sail area unit at the t moment under pre-stress according to the included angle of each sail area unit and the light pressure direction moment, thereby obtaining load of the area subjected to the light pressure of each sail area unit; (4) obtaining a global stiffness matrix Kt containing p units and the load row vector Ft as well as global mass m and the global mass matrix Mt; (5) calculating the final displacement, the final speed and the final acceleration of the t-th moment according to the final displacement, the final speed, the final acceleration at the (t-delta)-th moment, namely the initial conditions of the t-th moment as well as the global rigidity matrix and the load row vector at the t-th moment as well as the global mass matrix; (6) repeating steps (3)-(5) at the (t+delta t)-th moment until the final solving time tn; and (7) obtaining the breakage of the acceleration according to the results.

The invention discloses a chance frequency spectrum access method based on the tri-state learning strategy and in cognitive radio. The method includes that a cognitive user conducts fit goodness test on a current target information channel. A detection result in each time slot includes three states: the free state, the occupation state and the transition state. Suppose that the free state and the occupation state of a main user submit to the exponential distribution, and the cognitive user utilizes a hidden markov model to dynamically adjust information channel utilization parameter of the main user. The cognitive user utilizes estimation parameter to calculate change frequency spectrum access information channel capacity and determines to select the current information channel or enter the next information channel. The cognitive user updates the current confidence vectors according to the markov decision-making process which is partially observable and determines whether to send data at the time slot. The chance frequency spectrum access method based on the tri-state learning strategy can effectively improve information channel utilization rate of the cognitive user, accurately reflects true state of an authorization information channel accordingly, remarkably reduces delay when the information channel is accessed or quits, and simultaneously reduces interference of the main user.

The invention discloses a four-dimensional dynamic ground stress simulation method which comprises the following steps: S1, establishing a three-dimensional geologic model; S2, establishing a three-dimensional oil reservoir model and predicting a three-dimensional pore pressure field and a temperature field at different stages by utilizing production / injection dynamic parameters; S3, establishing a three-dimensional ground stress model; S4, forming an initial ground stress field; S5, establishing a four-dimensional dynamic ground stress model according to an initial three-dimensional ground stress filed model by taking the dynamic three-dimensional pore pressure field and the temperature field; S6, making a seepage-stress coupled solution and analyzing and calculating dynamic ground stress and pore elasticity parameters used for guiding wells engineering practice. The method has the beneficial effects that the changing situations of the dynamic ground stress and the pore elasticity parameters in an oil and gas exploitation process can be accurately reflected, so as to provide guidance for refracturing of old wells and drilling and completion operation of new wells.

The invention discloses an indentation measuring device for mechanical properties of soft tissue of residual limbs, belongs to the field of medical engineering prosthetic fitting detection, and aims at making the structure of a measurement device simple and portable and making measurement data more accurate. The indentation measuring device for the mechanical properties of the soft tissue of the residual limbs is characterized by comprising a rigid shell, wherein the inner side of the rigid shell is provided with an air bag, the air bag is filled with a certain pressure of gas, the side face of the rigid shell is provided with an avoidance hole, the rigid shell is provided with an indentation measuring device body, the indentation measuring device body comprises a fixedly arranged holder,an output end of the holder is connected with a linear stepping motor, the linear stepping motor is provided with displacement measurement equipment for measuring the moving distance of an output endof the linear stepping motor, the output end of the linear stepping motor is connected with a pressure sensor, and the pressure sensor is connected with a pressing rod passing through the avoidance hole. The indentation measuring device solves the problems that an existing structure is complicated in structure, and poor in portability, and a vertical relation between a pressure head and measurement tissue is difficult to ensure, a compression state of a prosthetic socket to the residual limbs is fully simulated in the measurement process, and the squeezing effect of the surrounding soft tissueon a measurement site is avoided as much as possible.

The invention discloses an online sub-health identification and diagnosis method based on performance monitoring data, belonging to the technical field of fault diagnosis. First, establish the initial model of probabilistic neural network state classification and calculate the threshold standard deviation, use the current model to carry out online monitoring and diagnosis classification of monitoring equipment, and further identify and extract sub-health state data, and put them into the sub-health state data group; if When the sub-health data group to be identified reaches the storage limit or has a known state, the storage work is suspended, and all elements in the group are subjected to K-means cluster analysis to obtain the classification result and clear the storage space of the sub-health data group. Then merge the sub-health state data set after cluster analysis with the previous training samples, and update it to the initial model to obtain a new classification model; finally, repeat the above steps to identify the sub-health state and repair it in time when a fault occurs. The invention takes timely and effective measures according to the state of the equipment to reduce losses caused by failures.

The invention discloses a changeable embankment model manufacturing device. The changeable embankment model manufacturing device comprises a portal frame, a track and a platform; the track is arranged below the portal frame; the platform which reciprocates along the track is arranged on the track; a hydraulic cylinder with a piston rod extending downwards is vertically arranged on a cross beam of the portal frame; a pressing plate is hinged to the top end of the piston rod; two fixed templates of which the plate surfaces are arranged in parallel are vertically and fixedly arranged on the top surface of the platform; and two movable templates of which the plate surfaces are oppositely and obliquely arranged are separately and movably arranged on the top surface of the platform between the fixed templates. The manufacturing device has the advantages that embankments of different structure types can be manufactured by splicing the fixed template and the movable template and moving on the track, so that the production workload of the embankment template is greatly reduced; and the embankment model can flexibly move on the track, and an effective working space is provided for follow-up monitoring experiments, mechanical experiments and the like.

The invention discloses a disk resource fault detection method and system. The method comprises: before performing input / output (I / O) operation on a physical block on disk resources, inspecting a virtual file system, namely a proc system, and determining whether the disk resources are correctly mounted in a local machine; when determining whether the disk resources are correctly mounted in the local machine, performing the I / O operation; comparing return time of the I / O operation with a preset time threshold value; when the return time is smaller than the time threshold value, judging that the disk resources are normal and performing fault detection on next I / O operation; and when the return time is greater than or equal to the time threshold value, judging that the disk resources are faulted and modifying self-inspection parameters of a disk file system. Through the scheme, the real state of a disk can be accurately reflected and the disk with potential faults is processed.

The invention discloses a control method for inhibiting deflagration of high-volatile coal, which comprises the following steps of: 1, judging and automatically processing a deflagration accident of a coal mill: monitoring the pressure of an inlet and an outlet of the coal mill and the temperature of an outlet of the coal mill, and when the differential pressure change of the inlet and the outlet of the coal mill and the temperature rise condition of the outlet of the coal mill are met, controlling the deflagration accident of the coal mill; the coal mill deflagration accident alarm system is triggered while the coal mill automatic fire extinguishing steam device is automatically started; 2, automatic purging of the coal mills and the pulverized coal pipes: monitoring the air speed of the pulverized coal pipe at the outlet of any one coal mill, and when the air speed is lower than a set value, triggering an automatic purging device of the coal pulverizing system to start to purge the pulverized coal pipe at the outlet of the coal mill; and 3, monitoring the wind speed of the pulverized coal pipeline: increasing wind speed measuring points on the pulverized coal pipeline. By arranging a series of structures, the running reliability of power plant equipment is improved, the blending combustion amount of imported economic coal types is increased, the fuel cost of a power plant is reduced, and huge benefits can be created for the power plant.

The invention discloses a spraying method for spraying a developing agent on the surface of a part. The spraying method comprises the following steps: A, preparing the developing agent; B, automatically spraying a developing agent on the surface of the part through a spray gun connected with a driving device, wherein B comprises the steps that B1, the spray gun is moved to the position above the part, and the vertical distance between the working plane of the spray gun and the lowest point of the to-be-sprayed face of the part is set to range from 150 mm to 210 mm; B2, the air pressure for controlling the open-loop flow of the spray gun is set to be 0.5-0.9 bar; B3, the air pressure of the fixed spraying area for controlling the spraying gun is set to be 1.5-2.5 bar; B4, the air pressure for controlling the atomization parameter of the developing agent is set to be 1.0-1.5 bar; and B5, the spray gun is moved above the part for spraying, and the moving speed is 200-400 mm / min. According to the spraying method for spraying the developer on the surface of the part, the spraying efficiency can be improved, the spraying thickness is uniform, and the spraying effect is good.

The invention discloses an aviation airplane wheel brake channel fault detection method, and belongs to the technical field of aviation airplane wheel brake system fault diagnosis and detection. The aviation airplane wheel brake channel fault detection method comprises the steps of self-inspection of a brake system, acquisition of a brake instruction signal value, acquisition of a brake voltage signal value, acquisition of an airplane wheel speed signal value, calculation of airplane wheel slip amount, calculation of brake current, calculation of expected brake pressure, acquisition of actual output brake pressure and fault judgment of a brake channel. According to the fault detection method, abnormal output of a brake circuit, mechanical faults of a change-over valve, mechanical faults of hydraulic insurance and brake channel faults caused by mechanical clamping stagnation of a brake control valve in the braking process can be recognized.

The invention discloses a method for controlling congestion by fusing three kinds of information in a wired / wireless hybrid network. The three kinds of information include packet loss information, RTT (Radiation Tracking Transducer) information and explicit congestion notification information. The method comprises the following steps of: marking a CE (Conformite Europeenne) bit in IP (International Protocol) packet according to the RTS (Ready-To-Send) repeat times of an MAC (Media Access Control) layer by a wireless node; marking the CE bit in the IP packet by a wired router through an array length; processing a received data packet, confirming the carrying capability through an ACK (Acknowledgement) packet and informing a sending end of the network congestion state by a receiving end; and then, comprehensively considering the packet loss information, the RTT information and the explicit congestion notification information for congestion prediction and adjusting a congestion control mechanism according to a prediction result by the sending end. The method provided by the invention judges the congestion by fusing the three kinds of information, effectively distinguishes wireless packet loss and congestion packet loss, improves the utilization and the throughput of the wired and wireless hybrid network with a wireless link as a bottleneck and improves the whole performance of the network.