34results about How to "Has practical engineering application value" patented technology

The invention provides a protocol parsing method and device and a layer-2 exchange system comprising the protocol parsing device. Layer-2 network service messages are recognized and parsed rapidly through a hardware technology and an optimization algorithm, so that smart real-time monitoring of network messages is realized; network service traffic can be managed dynamically in real time; the network security is improved effectively; and a communication network is more smooth and stable.

The invention discloses an urban congestion area road network double-layer boundary control method. A road network microscopic simulation model is established by adopting taxi GPS data and on-site survey data, and meanwhile, a road network macroscopic fundamental diagram (MFD) is constructed. On the basis, first, the expected total entry amount of the road network is determined according to a roadnetwork boundary control method (first-layer control) containing control delay; then, the control intersections are expanded into a virtual subarea road network according to a certain mode, and a road network total entry amount distribution method (second-layer control) is developed by taking the reduction of the road network density distribution variance as a control objective and considering queuing overflow control generated by road network total entry amount control. Compared with a common boundary control method, the control total amount distribution optimization control method is stable, effectively improves road network performance, avoids queuing overflow of the road network due to control, and has practical engineering application value.

The invention discloses an unmanned aerial vehicle (UAV) formation obstacle avoidance priority on-line configuration method based on a collision cone. The method comprises the steps of (1) collecting real-time positions and speeds of each UAV in a formation and an obstacle in an environment, and predicting a fastest collision time of each UAV in the formation and the obstacle on the above basis, (2) calculating a collision angle range of each UAV according to the collision cone theory, (3) constructing a collision evaluation function and calculating a maximum overload needed by performing a maneuver by each UAV in avoiding the obstacle with the combination of the fastest collision time and the collision angle range, and (4) comparing urgent degrees of collision evaluation of UAVs, and orderly distributing obstacle avoidance priorities from high to low to corresponding UAVs according to the sorting of urgent degrees from high to low. The method has the advantages of easy implementation, the adaption to different obstacle environments and online and real-time allocation calculation, and a guarantee is provided for the rapidity and accuracy of the obstacle avoidance of the UAV formation.

The invention provides an electronic regulator model for a water turbine adjusting system. The model has an openness control mode, a power control mode and an isolated-network control mode. The openness control mode or the power control mode can be manually selected as a control mode of a normal grid-connected unit. The openness control mode or the power control mode can be automatically switched with the isolated-network control mode. The power control mode has two sets of PID control parameters which can be automatically switched. The electronic regulator model is clear in structure and strong in universality, the parameter meaning of the model is definite, and the parameters can be conveniently obtained through measurement on site. The modeling process is efficient, the precision is high, and the actual control function can be accurately simulated, so that the actual engineering demands can be satisfied. Moreover, the universality of model application is improved. The meaning of the control parameters of the model is clear, and the parameters are conveniently obtained through a field test, so that the model has actual engineering application value. A reliable and accurate basis is provided for stable analysis and calculation of an electric power system, so that the stability of the electric power system is ensured.

The invention discloses a transformer bushing evaluation method, which fuses a plurality of indexes reflecting the state of a transformer bushing, comprehensively and comprehensively reflects the state of the bushing based on a fuzzy theory and a neural network algorithm, and introduces a variable weight and the neural network algorithm on the basis of fuzzy comprehensive evaluation. According tothe fuzzy control method, the limitation of conventional weight and the subjectivity of artificially determining the membership function are overcome, and the self-updating and self-adaption of the membership function are realized through neural network training, so that the fuzzy control has certain self-learning capability, and the evaluation result is more reliable.

The invention relates to an indoor testing apparatus and indoor testing method for simulating pile side post-grouting. The indoor testing apparatus comprises an air compressor, a grout storage tank and an interface shearing device, wherein the bottom of an upper shearing box pushed into the interface shearing device is provided with a grouting hole; and the bottom of the grout storage tank is connected with the grouting hole in the upper shearing box through a grouting valve and a grout inlet pipe. Cement grout is injected into the contact surface of a test soil body and concrete at a designedgrouting position via the grout inlet pipe; and then the physical and chemical properties of a pile-soil interface after pile side post-grouting are observed and analyzed through direct shear testingand subsequent soil body excavation. Compared with the prior art, the indoor testing apparatus and indoor testing method provided by the invention can be used for simulation study of the influence ofpile side post-grouting at different positions of the body of an on-site pile on the bearing mechanism of the foundation pile, can comprehensively study the influence of grouting and unloading conditions on pile side post-grouting effect by controlling different grouting and unloading conditions, are beneficial for revealing the grouting mechanism of pile side post-grouting, and provide referenceand the like for the design, construction and the like of post-grouting in practical pile foundation projects.

The invention discloses process method and device for high-performance wire rod production, and belongs to the technical field of severe plastic deformation fine grains. The process method can obtaina finished product with an invariable section size through the steps of material selection and cleaning, ultrasonic impact strengthening treatment preparation, ultrasonic impact strengthening treatment, two-piece welding and multi-pass rolling treatment, and a finished product with a uniformly thinned section size can be obtained after one-time ultrasonic impact strengthening treatment; and a low-temperature ultrasonic rolling impact device comprises a closed container filled with cooling liquid, an ultrasonic transducer, an ultrasonic tool head, a rigid impact roller column, an ultrasonic power supply, a rigid roller, a roller driving motor, a pressure cylinder, a spring and a traction transmission mechanism. According to the process method, uniform and efficient grain refinement can be realized on a wire rod or a strip with the micron-sized thickness, and the comprehensive mechanical property of the material is obviously improved; and the device can realize the low-temperature ultrasonic impact SPD strengthening treatment of the wire rod or the strip and can meet requirements of two impact treatment modes.

The invention provides an implementation system and method for delay information during intelligent substation process level network switching. Delay of relay protection network data traffic inside network nodes is informed through the time stamp position and hardware timestamp determining technology, and therefore network transmission delay is determined. According to the implementation system and method, the delay inside the network nodes is measured, and the method is high in operating rate, high in precision, easy to implement and capable of accurately and rapidly measuring the delay of the network nodes, so that the problem that the delay of the relay protection service network data is not known is solved, supports are provided for relay protection network sampling and tripping, and the implementation system and method have practical engineering application value.

The invention relates to a macroscopic-microscopic collaborative optimization method of a structure of a material containing elliptical holes. A material unit cell containing an elliptical hole is employed, and a homogenization method is used to calculate an equivalent elastic tensor of the unit cell. For realizing collaborative design of the material holes and structure configurations, two sets of independent design variables of elliptical hole angle parameters of the porous material and the macroscopic pseudo density on a structure design domain are introduced, and relationships between thedesign variables and the equivalent porous-material elastic-tensor are established through an SIMP interpolation model. In an optimization process, an overall volume constraint is used, and overall macroscopic structure stiffness maximization is used as a target for structure topology optimization design to obtain a design result. According to the method, design of the macroscopic structure configurations and the microscopic elliptical hole angles are integrated into an optimization model, the optimization result with a practical engineering application value is obtained, and macroscopic-microscopic collaborative optimization design of the structure of the material containing the elliptical holes is realized.

The invention discloses a multi-scale iteration method for efficiently solving a state of a large-scale nonlinear random structure system. The method comprises the following steps: establishing a moment function equation of a state response of the nonlinear random structure system; establishing an enclosed moment function equation of the state response by a Gauss truncation technology; establishing a multi-scale discrete interval within a time domain; and iteratively solving the enclosed moment function equation of the state response within the multi-scale interval by a Runge-Kutta method to obtain a statistical characteristic of the state response of the nonlinear random structure system finally. Through adoption of the multi-scale iteration method, simultaneous solving of three random differential equations can be avoided; a large quantity of computer storage resources are saved; and the computation efficiency is increased greatly. Moreover, iteration times can be adjusted automatically through error control and initial value setting, so that accelerated convergence of a solving process is realized. An efficient solving method is provided for state analysis of the large-scale nonlinear random structure system, and the method has an actual engineering application value.

The invention discloses a pipeline noise control device based on a local resonance mechanism acoustic metamaterial. The pipeline noise control device comprises a pipeline, a flexible film with pretightening force is embedded in the side wall of the pipeline, a plurality of connecting points are arranged on the flexible film, spring vibrators are arranged on the connecting points, the spring vibrators and the flexible film can generate superposed vibration, and when incident sound excitation reaches a specific frequency, radiation sound waves generated by vibration of the spring vibrators and the flexible film are cancelled with incident sound waves. According to the pipeline noise control device, a brand new design method is adopted, especially, a good control effect on low-frequency noise which is difficult to solve is achieved, and high sound insulation can be achieved at an ultra-low frequency band. The pipeline noise control device is small in number of adopted assemblies and simple in structure, so that the construction period is short, the design effect is remarkable, and certain practical engineering application value is achieved.

The invention discloses an unmanned aerial vehicle small target detection method and system and a storable medium, and relates to the technical field of computer vision. The method comprises the steps: constructing an unmanned aerial vehicle detection network based on a lightweight depth model; collecting unmanned aerial vehicle images and constructing an unmanned aerial vehicle image database to obtain a training data set; inputting the training data set into the unmanned aerial vehicle detection network for neural network training until the network converges; and inputting a to-be-detected unmanned aerial vehicle image into the trained unmanned aerial vehicle detection network to obtain an unmanned aerial vehicle small target detection result of the to-be-detected unmanned aerial vehicle image. According to the method, the problem that complex scenes are difficult to deal with due to the fact that semantic information extraction is incomplete when a traditional target detection method is used for unmanned aerial vehicle small target detection tasks is solved, the unmanned aerial vehicle detection precision can be effectively improved on the premise that the model light weight is guaranteed, and the method has practical engineering application value.

The invention discloses a fault monitoring method, system and device for an electromagnetic repulsion mechanism and a readable storage medium. The signal features of a vibration signal sample set is extracted through employing a wavelet packet normalization energy method, the model training is carried out through employing the obtained signal features, a fault diagnosis model is obtained, a fault diagnosis threshold value of the diagnosis model is set, the electromagnetic repulsion mechanism is used as a monitoring object, the online monitoring of the electromagnetic repulsion mechanism is firstly achieved, the running state of the electromagnetic repulsion mechanism can be judged in real time, accordingly, faults are rapidly and accurately reduced, parameter and structure optimization of the electromagnetic repulsion mechanism is further guided, online monitoring can be achieved, whether a fault occurs or not and the type of the fault can be judged within several seconds after the electromagnetic repulsion mechanism acts, the state of the circuit breaker can be quickly and accurately judged through the opening vibration signal, and the method has certain practical engineering application value.

The invention discloses a coal blending combustion method based on multi-objective optimization, and the method comprises the following steps: S1, calculating coal quality parameters through a linear weighting method according to the industrial analysis result of a coal sample, and calculating the coal quality parameters by taking a safety limit and an environmental protection limit as constraint conditions; establishing a coal blending mathematical model based on multi-objective optimization by taking safety, economy and environmental protection as optimization objectives; s2, optimally calculating the optimal coal blending proportion according to the multi-objective optimization-based coal blending mathematical model established in the step S1; and S3, implementing automatic coal blending combustion. Under the multi-target requirements of safety, economy and environmental protection, the actual load of a unit, the combustion working condition of a boiler and the coal storage condition of a coal yard are integrated, the blending proportion of coal in-furnace blending is optimally calculated, the proportion of coal types controlled by all coal feeders is automatically adjusted according to the blending proportion, and automatic coal blending and blending combustion are achieved.

The invention discloses a dynamic regulation and control method for a special lane for network-connected vehicle based on permeability. The method comprises the following steps of: 1, acquiring the total number of vehicles entering each lane and the number of network-connected vehicles in a current time period; 2, judging whether a special lane for the network-connected vehicle needs to be set in the current time period; 3, judging the lane number of the special lane for the network connection vehicle in the current time period through an algorithm; 4, sending the serial number of the special lane for the network-connected vehicle to the network-connected vehicle in the road section, and meanwhile controlling the intelligent light-emitting spikes on the corresponding lane marking lines to emit light; and 5, circulating the steps, and judging the lane number of the special lane for the network connection vehicle in the next time period. According to the invention, the position of the special lane for the network-connected vehicle can be dynamically selected in real time according to the network-connected vehicle permeability of each lane, the necessary lane changing times of the vehicles are reduced, the lane changing conflicts among the vehicles are reduced, and the traffic flow operation safety and the traffic flow operation efficiency are improved.

The invention discloses a phased array radar antenna back frame lightweight method, and the method comprises the steps: step 1, building a back frame lightweight reliability model through employing an interval-probability uncertainty measurement model based on the actual measurement parameters of a phased array radar antenna back frame; step 2, based on an equivalent model principle, according to a displacement function of the antenna back frame in the back frame lightweight reliability model, calculating the reliability and displacement constraint conditions when the maximum value of the displacement of the antenna back frame does not exceed a displacement threshold; and step 3, calculating a maximum probability failure point of a displacement constraint condition after Lagrange change under a preset condition by adopting iterative operation, and calculating an optimal solution of the back frame lightweight reliability model according to the maximum probability failure point so as to determine a phased array radar antenna lightweight reliability parameter. According to the technical scheme of the invention, the problem that the precise probability model of the phased array radar antenna back frame is difficult to obtain is solved, and the calculation amount in the reliability optimization process is greatly reduced.

The invention provides a method for inhibiting radiated emission of magnetic isolation communication equipment in a power system. The method comprises the following steps that radiated emission in the magnetic isolation communication equipment is divided into input-to-output dipole radiation and fringe radiation; a board-level embedded type splicing capacitance method is adopted to inhibit input-to-output dipole radiation; a through hole guardrail fringe protection method is adopted to inhibit fringe radiation. The method is low in cost, easy to realize, small in generated capacitance parasitic inductance value and capable of obviously reducing radiation emission in the magnetic isolation communication equipment in the system, guarantees the stability and the reliability of a communication system in intelligent power grid construction, and has practical engineering application value.

The invention discloses a directional diagram interval analysis method under the uncertainty deformation of a phased array radar, and the method employs an interval measurement model to measure the uncertainty deformation of a radar array plane, and further quantifies the fluctuation law of the sidelobe of a phased array radar directional diagram under the uncertainty deformation. The method comprises the steps of analyzing an interval median, an interval radius and spatial correlation function construction of radar array plane uncertain deformation; measuring uncertain deformation of the radar array plane generated under the action of the service load by using an interval field measurement model; and introducing the interval field model of the radar array plane uncertainty deformation into an electromagnetic-structure coupling directional diagram function formula, calculating to obtain a directional diagram of the phased array radar, and further obtaining upper and lower boundaries of a sidelobe of the directional diagram of the phased array radar under the array plane uncertainty deformation. According to the technical scheme, the upper and lower boundary representation forms of the side lobes of the radar directional diagram are obtained, the influence rule of radar array plane uncertainty deformation on the radar directional diagram can be quantified, and guidance and reference are provided for radar actual engineering design and optimization.

The invention relates to a pressure sensor calibration algorithm based on 8051. Based on the least square fitting,the Newton difference value and the cubic spline interpolation algorithm, the calibration algorithm for effectively eliminating the temperature drift is achieved. Especially for pressure sensor calibration which often needs to work at different temperatures, the calibration error is within 0.119 percent, and the cost, hardware computing power and operating speed are fully taken into account. The pressure sensor calibration algorithm based on 8051 has some practical engineering application value.

The invention relates to a hardware implementation device of an SM3 algorithm, and belongs to the technical field of information security. The device comprises 16 basic message word registers, which stores 16 initial message words at first, then are operated in 64-round expansion calculation of the SM3 algorithm, wherein the operation comprises 0th-round to 11th-round non-reassignment operation and 12th-round to 63th-round dynamic assignment operation: coding the 16 basic message word registers in sequence, assigning the message word in the next basic message word register to the previous basic message word register, and assigning the message word in a third dynamic message word register to the last basic message word register; and three dynamic message word registers which are used for dynamically storing message words in each round of expansion calculation and dynamically updating the message words in each round. The device reduces the number of registers, further reduces the area of a hardware device, saves cost and power consumption, and has higher practical engineering application value.

The invention relates to the technical field of negative film character recognition and artificial intelligence, in particular to an industrial ray negative film image lead word number recognition method which is based on deep learning and edge features and comprises a data collection module, an image detection module and a character processing module. According to the method, a fusion algorithm including a traditional edge detection method and a deep learning method is adopted, so that the recognition accuracy can be effectively improved. In order to ensure the validity of the detected lead word number, the algorithm needs to know the beginning part of the lead word number to be detected before identification, so the detection starting point is determined. At the end, a large amount of logic judgment is added in the algorithm to determine the legal end point of the lead word number. Considering that the lead word form change of the bottom film is large and the lead word position has certain offset, corresponding processing is performed in the algorithm, and the tolerance of the algorithm to the original image is ensured. In consideration of image features of an actual negative film, multiple means are adopted for image preprocessing, and the influence of image quality on an algorithm is avoided.

The invention discloses a method for controlling the double-layer boundary of the road network in the urban congestion area. The microscopic simulation model of the road network is established by using the GPS data of the taxi and the field survey data, and the macro basic diagram (MFD) of the road network is constructed at the same time. Firstly, according to the road network boundary control method including control delay (first-level control), the expected total amount of road network entry is determined, and then each control intersection is expanded into a virtual sub-area road network in a certain way to reduce the variance of road network density distribution In order to control the target, considering the queuing overflow control caused by the control of the total amount of road network entry, the distribution method of the total amount of road network entry (the second layer of control) is developed. Compared with the commonly used boundary control method, the optimal control method of total control allocation improves the performance of the road network stably and effectively, avoids the queue overflow caused by the control of the road network, and has practical engineering application value.

The invention provides a method for inhibiting radiated emission of magnetic isolation communication equipment in a power system. The method comprises the following steps that radiated emission in the magnetic isolation communication equipment is divided into input-to-output dipole radiation and fringe radiation; a board-level embedded type splicing capacitance method is adopted to inhibit input-to-output dipole radiation; a through hole guardrail fringe protection method is adopted to inhibit fringe radiation. The method is low in cost, easy to realize, small in generated capacitance parasitic inductance value and capable of obviously reducing radiation emission in the magnetic isolation communication equipment in the system, guarantees the stability and the reliability of a communication system in intelligent power grid construction, and has practical engineering application value.

The invention discloses an inherent frequency and vibration mode configuration method based on mass and rigidity mixed addition, which comprises the following steps of: firstly, determining the position of structural mass-rigidity mixed addition according to actual engineering (the structural mass-rigidity mixed addition refers to adding a mass block and supporting rigidity or connecting rigiditybetween two degrees of freedom); then, expressing the matrix increment (the matrix increment refers to the matrix increment after mass-rigidity mixed addition) of the added structure in a vector form,and finally, converting the problem that the structure quantity needs to be changed for solving to obtain the ideal inherent frequency and vibration mode into the numerical optimization problem containing the ideal inherent frequency, vibration mode and rigidity addition amount; and solving the size of the mass-rigidity required to be added through a genetic algorithm. The method improves the design efficiency, avoids the blindness of design, reduces the design cost, and has a practical engineering application value.

The invention discloses a dynamic control method for network-connected vehicle special lanes based on permeability, the steps of which include: 1 collecting the total number of vehicles entering each lane in the current time period and the number of network-connected vehicles; 2 judging whether the current time period needs to be set 3. Use the algorithm to determine the lane number of the dedicated lane for connected vehicles in the current time period; 4. Send the dedicated lane number for connected vehicles to connected vehicles on the road section, and at the same time control the intelligent Luminous road studs are illuminated; 5. Repeat the above steps to determine the lane number of the dedicated lane for networked vehicles in the next time period. The invention can dynamically select the position of the dedicated lane for the networked vehicle in real time according to the penetration rate of the networked vehicle of each lane, reduce the number of necessary lane changes of vehicles, reduce the conflict of lane change between vehicles, and improve the safety and traffic safety of traffic flow operation. flow efficiency.

The invention discloses an ultrasonic-assisted equal-channel angular stretching processing method. Aiming at defects such as bending in the angular stretching process and inherent deformation of the stretching deformation in the conventional equal-channel angular stretching process, the present invention The bending mechanism in the conventional equal-channel angular stretching process is replaced by ultrasonic impact forging with a direction perpendicular to the continuous shear plane; finally, the foil or wire can be repeated for multiple passes without obvious cross-sectional thinning Large effective plastic deformation can be obtained through the channel corner area of ​​equal cross-section, the effect of obtaining ultra-fine grain and improving the original texture structure, and the reduction of required pulling force is convenient for continuous processing, which has practical engineering application value.

The invention discloses a natural frequency and mode shape configuration method based on the mixed addition of mass and stiffness. First, the position of the mixed addition of structural mass-stiffness is determined according to actual engineering (herein, the mixed addition of structural mass-stiffness refers to adding on the degree of freedom. Mass block and support stiffness or connection stiffness between two degrees of freedom), and then the matrix increment of the added structure (matrix increment refers to the matrix increment after mass-stiffness mixed addition) is expressed in the form of a vector, and finally Transform the problem of changing the structure required to obtain the ideal natural frequency and mode shape into a numerical optimization problem including the ideal natural frequency, mode shape and stiffness addition, and solve the required added mass-stiffness by genetic algorithm. This method improves the design efficiency, avoids the blindness of the design, and reduces the design cost, which has practical engineering application value.

The invention discloses a multi-scale iteration method for efficiently solving a state of a large-scale nonlinear random structure system. The method comprises the following steps: establishing a moment function equation of a state response of the nonlinear random structure system; establishing an enclosed moment function equation of the state response by a Gauss truncation technology; establishing a multi-scale discrete interval within a time domain; and iteratively solving the enclosed moment function equation of the state response within the multi-scale interval by a Runge-Kutta method to obtain a statistical characteristic of the state response of the nonlinear random structure system finally. Through adoption of the multi-scale iteration method, simultaneous solving of three random differential equations can be avoided; a large quantity of computer storage resources are saved; and the computation efficiency is increased greatly. Moreover, iteration times can be adjusted automatically through error control and initial value setting, so that accelerated convergence of a solving process is realized. An efficient solving method is provided for state analysis of the large-scale nonlinear random structure system, and the method has an actual engineering application value.

The invention relates to an indoor testing apparatus and indoor testing method for simulating pile side post-grouting. The indoor testing apparatus comprises an air compressor, a grout storage tank and an interface shearing device, wherein the bottom of an upper shearing box pushed into the interface shearing device is provided with a grouting hole; and the bottom of the grout storage tank is connected with the grouting hole in the upper shearing box through a grouting valve and a grout inlet pipe. Cement grout is injected into the contact surface of a test soil body and concrete at a designedgrouting position via the grout inlet pipe; and then the physical and chemical properties of a pile-soil interface after pile side post-grouting are observed and analyzed through direct shear testingand subsequent soil body excavation. Compared with the prior art, the indoor testing apparatus and indoor testing method provided by the invention can be used for simulation study of the influence ofpile side post-grouting at different positions of the body of an on-site pile on the bearing mechanism of the foundation pile, can comprehensively study the influence of grouting and unloading conditions on pile side post-grouting effect by controlling different grouting and unloading conditions, are beneficial for revealing the grouting mechanism of pile side post-grouting, and provide referenceand the like for the design, construction and the like of post-grouting in practical pile foundation projects.