Automatic driving method and device based on hierarchical reinforcement learning

The invention provides an automatic driving method and device based on hierarchical reinforcement learning, and the method comprises the steps: obtaining driving data which comprises the background data of a simulation driving platform; training an encoder according to the driving data to obtain a multi-dimensional feature vector; unsupervised training is carried out on the multi-dimensional feature vector to obtain a plurality of initial skills, and the unsupervised training comprises training added with information entropy constraint; hierarchical reinforcement training is carried out on the multi-dimensional feature vector to obtain a controller, and the hierarchical reinforcement training comprises the step of adjusting the loss of the deep learning network; the plurality of initial skills are combined by the controller to perform an automated driving action. According to the method disclosed by the invention, a plurality of general skills can be obtained through training, the skill ...

Spiral capacitance sensor for measuring gas-liquid two-phase flow porosity of tiny pipeline

The invention relates to a spiral capacitance sensor for measuring the gas-liquid two-phase flow porosity of a tiny pipeline, which comprises a source electrode. The source electrode and a measuring electrode rotate towards the other end outside an insulation pipeline from one end outside the insulation pipeline along the same direction to form a measuring electrode pair with a spiral structure; an axial guard electrode with a spiral structure is arranged between the measuring electrode pair; an edge guard electrode is arranged at the two ends of the measuring electrode pair; a shielding case is arranged outside the measuring electrode pair and the edge guard electrode; the axial guard electrode and the edge guard electrode are electrically connected with the shielding case and are grounded at the same time; the two ends of the insulation pipeline are hermetically connected with the measured pipeline through cutting sleeves; and conditions of medium concentration variation can be obtained ...

Wide-area space railway line intelligent search method and system, terminal and medium

The invention discloses a wide-area space railway line intelligent search method. The method comprises the steps of S100, initializing a Monte Carlo tree; step S200, performing Monte Carlo tree search circulation, specifically, determining an optimal path in the tree according to a UCT function, then performing simulation exploration for one time based on a strategy outside the tree, and finally backtracking the cost obtained by exploration and updating the information of each node in the exploration path; s300, extracting an optimal path from the Monte Carlo tree, specifically, ignoring exploration items in the UCT function, selecting optimal nodes in the tree in sequence according to experience items, and generating a node sequence, namely the optimal path generated by searching of the Monte Carlo tree; and S400, performing optimal path fitting to obtain a three-dimensional line scheme. The method has the advantages that the relation between experience and exploration in line design is ...

Railway bridge scheme automatic arrangement method

The invention discloses a railway bridge scheme automatic arrangement method. The method comprises the following steps: acquiring control point information of a target bridge, matching the control point information with each beam span scheme in a preset beam library, taking the matched beam span scheme as a target beam span scheme, and covering each section on the target bridge according to the target beam span scheme, determining uncovered filling sections in each section according to a covering result, filling each filling section according to a preset filling strategy, and generating a target arrangement scheme of the target bridge according to the covering result and the filling result; according to the scheme, all the beam span schemes in the preset beam library are matched, the sections needing to be covered and the uncovered filling sections in all the sections of the target bridge are determined based on the matching result, and all the sections are covered and filled, so that all ...

Space-based bridge deformation monitoring method, device and equipment and storage medium

The invention belongs to the technical field of bridge monitoring, and discloses a space-based bridge deformation monitoring method and device, equipment and a storage medium. The method comprises the following steps: acquiring bridge monitoring data of a to-be-monitored bridge; determining coordinates of a monitoring point according to the bridge monitoring data; target part positioning information is obtained according to the monitoring point coordinates; determining a long-term deformation time sequence and a short-term deformation time sequence according to the bridge monitoring data; determining deformation time sequence information according to the long-term deformation time sequence and the short-term deformation time sequence; determining linear deformation information and nonlinear deformation information according to the bridge monitoring data; determining geographical deformation map information according to the linear deformation information and the nonlinear deformation information ...

Purifying and refining method of medicinal potassium sorbate

A method for purifying and refining medicinal-grade potassium sorbate comprises the following steps: S1, dissolving: food-grade potassium sorbate is put into a mixed solvent, stirred, mixed, soaked and dissolved, and the mixed solvent is a mixed solvent composed of absolute ethyl alcohol and glycerin; the food-grade potassium sorbate is prepared from sorbic acid and potassium hydroxide; s2, solid-liquid separation: carrying out solid-liquid separation on the suspension dissolved in the step S1; and S3, drying: drying the solid separated in S2 to obtain the medicinal potassium sorbate. According to the method for purifying and refining the medicinal potassium sorbate, remaining impurities, namely sorbic acid or potassium hydroxide, influencing the pH value of the potassium sorbate are rapidly removed, other impurities dissolved in an organic solvent are further removed, and the purity of the potassium sorbate is further improved; the purifying and refining method is simple to operate and ...

Event video detection system based on hierarchical structure

The invention relates to an event video detection system based on a hierarchical structure, which belongs to the field of data, digit and image processing and video analysis. The event video detection system is characterized by hierarchically dividing a video event detection flow, comprising application in traffic and public security, and using fixed video scenes as main detection scenes. In the technical scheme, the event video detection system comprises a video image acquisition part, a video processing part, a data storage part and an application service part, wherein the video processing part is a video data processing server and comprises a basic video data processing module, an object extraction module, a clue extraction module and an event detection module for sequential extraction of original records of different stages for video detection, and can provide the original records for external equipment through the computer of the data storage system. When the event video detection ...

Three-dimensional subway linear reconstruction method, device and equipment and storage medium

The invention belongs to the technical field of line reconstruction, and discloses a three-dimensional subway line shape reconstruction method and device, equipment and a storage medium. The method comprises the following steps: acquiring line information of a subway line to be reconstructed; constructing a reconstruction optimization model of the subway line to be reconstructed according to the line information, the design variables, the objective function and the constraint conditions; according to the line information, determining an infeasible section violating the building clearance constraint; and performing reconstruction integration on the infeasible section according to the reconstruction optimization model. Through the above mode, the three-dimensional reconstruction optimization model is firstly constructed based on the line information of the subway line to be reconstructed, then the infeasible section violating the building limit constraint is determined, and reconstruction ...

Flow measuring device and method

The invention relates to a flow measuring device and method. The device is characterized in that the flow measuring device comprises a shunting part and at least two flow measuring parts; the flow measuring part comprises a measuring container, an overturning container and a measuring device; the outlet of the measuring container is arranged above the inlet of the overturning container, and the measuring device is fixed on the overturning container; the flow dividing component comprises a flow dividing container and at least two flow dividing pipes, an opening is formed in the top of the flow dividing container, the position of an inlet of each flow dividing pipe is formed in the bottom of the flow dividing container, and the position of an outlet of each flow dividing pipe is correspondingly formed above the inlet of each measuring container. By adopting the method, the measurement range is enlarged while the measurement precision is improved.

Device and method for measuring solid particle speed of gas/solid phase stream in pneumatic conveying pipe

Flow guide device and online measurement system for distilled liquor picking process

The utility model relates to a flow guide device for a distilled liquor picking process. The flow guide device comprises a leading-in pipe, a leading-out pipe, a first standard container, a second standard container and a plurality of control valves, wherein the first standard container and the second standard container are arranged at an interval and independently arranged; the leading-in pipe comprises a first branch and a second branch, so that wine can flow into the first standard container from the first branch or flow into the second standard container from the second branch; the eduction tube is arranged at the outlet of the first standard container and the outlet of the second standard container, so that wine in the first standard container and the second standard container can flow into the eduction tube after flowing out; the plurality of control valves are used for controlling wine bodies to alternately flow into the first standard container and the second standard containerand ...

Data identification method and device, electronic equipment and storage medium

The invention provides a data identification method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring first data; the first data represents the driving condition in the vehicle driving process; extracting a first feature vector of the first data by using a first model; the first model comprises an LSTM network auto-encoder; generating second data by using the first model and the first feature vector; the second data represents the driving condition in the reconstructed vehicle driving process; determining first information based on the first data and the second data; the first information represents whether the first data is credible information or not. According to the scheme provided by the invention, the feature vectors of the driving data are extracted through the long short term memory (LSTM) network auto-encoder, and the nonlinear relation data in the driving data are extracted and analyzed, so that the diversity and complexity ...

Bridge engineering quantity estimation method based on GIS (Geographic Information System)

The invention discloses a bridge engineering quantity estimation method based on a GIS system, and belongs to the technical field of bridge engineering. The method comprises the following steps of: acquiring a work point bridge structure information table of a GIS (Geographic Information System) when the construction cost of a bridge project is carried out; determining a work point bridge engineering structure type according to the work point bridge structure information table; determining corresponding structure size parameters according to the construction site bridge engineering structure type; calculating a structure quantity data table corresponding to the construction site bridge engineering structure type according to the construction site bridge engineering structure type and the structure size parameters; generating a work point bridge quantity summary table according to the structure quantity data table; and querying the bridge engineering structure quantity information coding ...

High-speed rail transfer passenger volume analysis method and system based on generalized benefit model

The invention discloses a generalized benefit model-based high-speed rail transfer passenger volume analysis method and system, and the method comprises the steps: constructing a computable railway network and a computable comprehensive traffic network, and calculating the generalized utility of a railway network section and the generalized utility of a railway network node of the computable railway network, the comprehensive traffic network road section generalized utility and the comprehensive traffic network node generalized utility of the computable comprehensive traffic network are calculated, and a traffic demand matrix is obtained, and comprises a railway travel demand matrix and a comprehensive traffic demand matrix; according to the railway network road section generalized utility, the railway network node generalized utility, the comprehensive traffic network road section generalized utility and the comprehensive traffic network node generalized utility, traffic distribution is ...

Passenger station passenger streamline identification method, system and equipment based on machine learning

The invention discloses a passenger station passenger streamline identification method, system and device based on machine learning. Firstly, passenger streamline data in a passenger station are acquired; inputting the passenger streamline data into a passenger identification network to carry out passenger identification; tracking the travel of each passenger according to the passenger identification result; and finally, identifying passenger flow in different directions and paths to obtain a passenger flow line. According to the method, the transfer condition of the passenger flow in the high-speed rail station can be visually analyzed, and the method is suitable for the high-speed rail station with similar passenger appearance characteristics.

Pseudo-parameterized model establishing method based on GIS (Geographic Information System)

The invention discloses a pseudo parameterization model establishing method based on a GIS system, and belongs to the technical field of engineering modeling. The method comprises the following steps: analyzing an original engineering model by using a GIS (Geographic Information System) to obtain a to-be-assembled component; obtaining control points and a structural relationship between the control points according to the to-be-assembled component; connecting the control points according to the structural relationship between the control points to form an engineering structure skeleton model; establishing a static component based on the engineering structure skeleton model; and hooking the static components to control points corresponding to the engineering structure skeleton model, establishing an engineering structure static model, and finally obtaining a lightweight bridge structure model suitable for a GIS system, so that the size of the model is reduced, the user experience of an engineering ...

Method and device for realizing adaptive acceleration test

The invention discloses a method and device for realizing adaptive acceleration testing, and the method comprises the steps: determining an importance sampling function of the ith adaptive acceleration testing according to the testing results of the (i-1) th and previous adaptive acceleration testing; according to the determined importance sampling function of the ith adaptive acceleration test, sampling and determining a test scene Xi of the ith adaptive acceleration test; performing an adaptive acceleration test on the autonomous vehicle in the test scene Xi of the ith adaptive test determined by sampling to obtain a test result; determining a test index of the adaptive acceleration test of the test scene Xi according to the obtained test result; and determining the determined test index as a test evaluation result when it is determined that the test result converges according to the determined test index. According to the embodiment of the invention, through the determination of the ...

Two phase fluid phase concentration measuring method based on main component analysis and neuron network

In the capacitance tomography system composed of the capacitance sensor array, the electronic measurement circuit and the computer for image formation, the method of principal component analysis is introduced to analyze the normalized value of capacitance measured. These components with contribution rate less than mu are removed from the principal components. The data of principal components withcontribution rate larger than mu are as the input for the forwarding neuron network. The output of the neuron network is the phase concentration. The substance of the principal component analysis is that the normalized sample matrix of the capacitance values measured is transformed to the correlation matrix, from which each eigenvalue and related principal component is obtained.

Railway real-time deformation monitoring information display system and method, medium and equipment

The invention provides a railway real-time deformation monitoring information display system and method, a medium and equipment. The system comprises a data processing system and a deformation information management system. Wherein the data processing system is composed of a calculation module and a communication module; the deformation information management system is composed of a database module, a deformation information display management interface, a two-dimensional display module, a three-dimensional display module and an early warning module. Wherein the database module comprises a deformation information database and an early warning information database. In the above components, the calculation module is electrically connected with the communication module, the database module is electrically connected with the early warning module, the two-dimensional display module and the three-dimensional display module, and the deformation information display management interface is also ...

Capacitance imaging sensor with asymmetric combined electrode structure

The invention discloses an electrical capacitance tomography sensor which is provided with an asymmetrical composite electrode structure and belongs to the electrical capacitance tomography field. A plurality of serial sensor electrode djs are respectively grouped into 11 groups of combined electrodes with different number of electrode djs; the 11 groups of combined electrodes are integrated into a whole for excitation and measurement; when in measurement, the excitation voltage is applied to the first combined electrode and the field programmable gate array FPGA is adopted to switch channels to respectively measure capacitance values between the combined electrodes and the excitation combined electrodes, and, to measure the charge value of the combined electrodes forming the measurement electrodes. Compared with the prior art, the invention enables the position and angle of the excitation electrodes and measurement electrodes more free so as to obtain more independent measurement data ...

Unloading method for reducing coil unloading auxiliary time

The invention provides an unloading method for reducing coil unloading auxiliary time, which comprises the following steps of: S1, starting coil unloading operation when the speed of a strip in an outlet area is reduced to be below a threshold speed; s2, the strip (1) is clamped by a pinch roll (3) in a pressed-down state, and the conveying speed of the strip is reduced to zero; s3, strip unloading operation is executed in an outlet area, a crop shear (4) is pressed down, and a strip head which reaches the crop shear (4) through a deflector roller (2) of the strip starting station is sheared; the coiling machine (7) is used for coiling the strip sheared by the crop shear into a coiled material by using a reel; s4, in the coiling process of the coiling machine, a follow-up device motor (6) of the starting station drives the rack where the deflector roller is located to retreat, meanwhile, the coil stripping trolley moves to the position below a coiling shaft of the coiling machine to the ...

Railway line specific pairing relational model construction method and line interval calculating parameter inquiry method

The invention designs a railway line specific pairing relational model construction method and a line interval calculating parameter inquiry method based on a railway line specific pairing relational model. By virtue of once modeling, the railway line specific pairing relational model can be repeatedly used; as for any profile point, pairing line element information can be acquired only by virtue of multiple times of simple logical operation, and then the line interval is calculated, so that the line interval calculation process is greatly simplified, and the calculation processes of other line relation variables are also efficient; furthermore, the uniqueness and accuracy of line interval calculation results under any condition are effectively ensured; furthermore, the methods are scientific in algorithm, simple in realization, rapid in operation, small in data storage capacity, accurate in calculation result, suitable for various line shapes and beneficial to informatization development ...

具备高速数据远传能力的电容成像装置

The capacitive imaging device with high speed remote data transmission capacity belongs to the field of two-phase flow measurement technology. The present invention features that monochip computer is connected with ISA communication card connected to computer through bus control exciting circuit, signal processing circuit, communication chip and serial RS485 cable. When the communication baud rate is 500 kbps, the maximum communication distance will reach 300 m. The present invention makes it possible to avoid set imaging computer in harsh industrial site and to raise greatly the practicability.

User capital reservation intention identification method and device, electronic equipment and storage medium

The invention relates to a user capital reservation intention identification method and apparatus, an electronic device and a storage medium. The user capital reservation intention identification method comprises the steps of obtaining user feature data of a target user to be subjected to capital reservation intention identification; inputting the user feature data into a pre-trained capital reservation intention recognition model to enable the capital reservation intention recognition model to output a capital reservation intention score, the capital reservation intention recognition model being obtained by training public domain features and private domain features corresponding to a plurality of users; and determining the capital reservation intention classification of the target user based on the capital reservation intention score. According to the embodiment of the invention, the method achieves the prediction of the information retention intention of the target user based on the ...

Bridge comprehensive deformation monitoring system and method

The invention belongs to the field of bridge monitoring, and discloses a bridge comprehensive deformation monitoring system and method. The method comprises the following steps: a Beidou monitoring module obtains Beidou satellite data, determines target part positioning information of a bridge to be monitored according to the Beidou satellite data, and sends the target part positioning information to an information processing module; the foundation radar interference monitoring module collects bridge deformation data, determines deformation time sequence information of a to-be-monitored bridge according to the bridge deformation data, and sends the deformation time sequence information to the information processing module. The satellite-borne settlement monitoring module obtains satellite-borne data of a bridge to be monitored, determines geographical deformation diagram information according to the satellite-borne data, and sends the geographical deformation diagram information to the ...

Multi-flavor cookies

The invention relates to a leisure food and a production method thereof, in particular to a production method for processing cookies by using wheat flour, walnut powder and shortening as main raw materials. The invention aims at providing a processing method by using walnut powder to partially replace wheat flour, which can increase protein content of the product and change the qualities of high oil and high sugar of cookies.

Distributed computation system and method used for real-time video processing

The invention relates to a distributed computation system used for real-time video processing, which belongs to the technical field of video analysis and is characterized by comprising a distributed resolving module of video processing algorithm for traffic event detection, a load balancing module, a video storage/distribution server, a static processing computer colony and at least one dynamic processing computer so as to resolve a machine vision and video processing algorithm into subalgorithms which can be concurrently processed; the subalgorithms are resolved to the static processing computer colony to carry out concurrent processing and are synthesized on the dynamic processing computer, and the number of the task of each frame image and the mapping table of the working state of each static processing computer are established by the load balancing module to dynamically balance the load, and finally vision library interfaces are internally installed in static processing software and ...

Method for realizing automatic driving perception layer test scene generation

The invention discloses a method for realizing automatic driving perception layer test scene generation, which comprises the following steps of: constructing a test scene function according to a preset interference variable and scene data of a perception layer of an input target detection algorithm; determining a vehicle safety index function according to the output data of the sensing layer of the target detection algorithm and the real scene data; under a preset rationality constraint condition, solving the constructed test scene function according to the determined vehicle safety index function, and obtaining a test scene for a safety test; wherein the real scene data are real target data and corresponding states in the real scene. According to the embodiment of the invention, for the vehicle potential safety problem caused by the sensing layer, the composition structure of the sensing layer is considered, the rationality constraint is taken as the constraint condition, the test scene ...

Engineering investigation design software index test method

The invention belongs to the technical field of software testing, and discloses an engineering investigation design software index testing method. The method comprises the following steps: acquiring test software information of to-be-evaluated software for engineering investigation design; determining test indexes and business link information according to the test software information; determining at least one investigation and design link according to the business link information, wherein the investigation and design link comprises a surveying and mapping link, an investigation link, a line selection link and a design link; determining a test plan according to each survey design link and the test index; constructing a test record table according to the test plan; importing a plurality of preset test cases into the test record table, and obtaining a plurality of reference index values; and determining function business contribution information of the to-be-evaluated software according ...

METHODS AND SYSTEMS FOR THE CULTURE OF CELLS AT LIQUID-LIQUID INTERFACES

The present invention relates to methods of culturing adherent cells, in particular adherent stem cells, to confluency at a liquid-liquid interface. The invention also provides cell culture systems useful in the culture of cells at liquid-liquid interfaces. The cell culture systems generally comprise an aqueous cell culture medium and an oil phase, there being a conditioning layer disposed between the cell culture medium and the oil phase comprising a peptide or polymer layer and a surfactant that assists in the culture of the adherent cells (in particular stem cells) at the interface between the two phases.

BDS3 PPP-B2b signal-based rapid and precise positioning method and system for depopulated area

The invention discloses a BDS-3PPP-B2b signal-based rapid and precise positioning method and system for a depopulated area. The method comprises the following steps of: extracting ionized layer delay and troposphere delay over a ground base station; performing fitting modeling on the extracted ionospheric delay and troposphere delay by using a spherical harmonic function, and extracting atmospheric correction information; the method comprises the following steps: encoding atmospheric correction information, carrying a BDS-3PPP-B2b signal through an uplink station, uploading the encoded atmospheric correction information to a BDS-3GEO satellite, and downloading the atmospheric correction information to a user side through the BDS-3PPP-B2b signal by the BDS-3GEO satellite; and after receiving the atmosphere correction information, the user side carries out rapid ambiguity fixation to obtain high-precision position information. According to the method, the base station layout cost is saved ...

Variable-width turnout beam parametric modeling method

The invention belongs to the technical field of bridge modeling, and discloses a variable-width turnout beam parametric modeling method. The method comprises the steps that standard simply supported beam model parameters are determined according to the line turnout position and obstacle control point information; determining turnout simply supported beam parameters according to the line turnout position and standard simply supported beam model parameters; determining turnout continuous beam parameters according to the turnout simply supported beam parameters; determining a continuous beam span parameter according to the turnout continuous beam parameter; according to the standard simply supported beam model parameters, continuous beam section contour parameters are determined; and target bridge modeling parameters are determined according to the continuous beam section contour parameters and the continuous beam span parameters. By means of the method, parametric modeling of the line turnout ...

Digital engineering geological plotting method with cooperation of indoor work and outdoor work

The invention belongs to the technical field of engineering geology plotting, and discloses a digital engineering geology plotting method with cooperation of indoor and outdoor work. The method comprises the following steps: preprocessing initial data to obtain annotation data, and determining topographic and geological conditions and engineering conditions; according to the topographic and geological conditions and the engineering conditions, interior geological plotting is carried out, and initial geological plotting points and initial geological description data are obtained; field geological plotting is carried out, the initial geological plotting points and the initial geological description data are adjusted, and geological plotting points and geological description data are determined; determining geological annotation data according to the geological annotation points and the geological description data; and when the geological annotation data is qualified, importing the geological ...

Two phase fluid phase concentration measuring method based on main component analysis and neuron network

Bridge design scheme evaluation rule and recommendation method

The invention discloses a bridge design scheme evaluation rule and recommendation method, and belongs to the technical field of bridge design. According to the method, the number of piers or span beams influencing bridge design indexes is counted, and the number of piers or span beams corresponding to each evaluation index and the total number of piers are obtained; taking the bridge pier or span beam number corresponding to each evaluation index and the total bridge pier number as input data to carry out bridge design scheme scoring calculation to obtain a relative score of the bridge design scheme; obtaining an evaluation grade corresponding to the relative score according to a relationship between the evaluation grade of the bridge design scheme and the relative score; the bridge design schemes are evaluated based on the evaluation grades, the scoring condition of each bridge design scheme can be obtained according to the relative scores, the evaluation grade of each bridge design scheme ...

Capacitance imaging sensor with asymmetric combined electrode structure

The invention discloses an electrical capacitance tomography sensor which is provided with an asymmetrical composite electrode structure and belongs to the electrical capacitance tomography field. A plurality of serial sensor electrode djs are respectively grouped into a plurality of combined electrodes with different number of electrode djs; the combined electrodes are integrated into a whole for excitation and measurement; when in measurement, the combined electrodes forming excitation electrodes supply the excitation voltage and the FPGA is adopted to switch channels to respectively measure capacitance values between the combined electrodes and the excitation combined electrodes, namely, to measure the charge value of the combined electrodes forming the measurement electrodes. Compared with the traditional electrical capacitance tomography sensor, the invention further free the position and angle of the excitation electrodes and measurement electrodes so as to obtain more independent ...

Event video detection system based on hierarchical structure

The invention relates to an event video detection system based on a hierarchical structure, which belongs to the field of data, digit and image processing and video analysis. The event video detection system is characterized by hierarchically dividing a video event detection flow, comprising application in traffic and public security, and using fixed video scenes as main detection scenes. In the technical scheme, the event video detection system comprises a video image acquisition part, a video processing part, a data storage part and an application service part, wherein the video processing part is a video data processing server and comprises a basic video data processing module, an object extraction module, a clue extraction module and an event detection module for sequential extractionof original records of different stages for video detection, and can provide the original records for external equipment through the computer of the data storage system. When the event video detection system ...

Device and method for measuring gas-solid diphasic stream parameter in square pneumatic conveying pipe

The invention discloses a measuring device and the method for measuring the two-phase flow parameter of gas and solid in square pneumatic conveying pipeline, belonging to the measurement technology of two-phase flow parameter of gas and solid in conveying pipeline. The measuring device is that an electrostatic sensor, and a charge preamplifier before the electrostatic sensor, a signal process circuit, a dada acquisition card, and a computer are arranged on the square conveying pipeline in series. The measuring method is as follows: the quantity of electricity of the static charges carried on the solid particles in the square pipeline when passing through the square electrode is represented with the electrostatic sensor through electrostatic induction; the weak inductive charges on the electrode are pretreated with the charge preamplifier, and then is input in the computer via the signal process circuit and the dada acquisition card; the sampling signal is analyzed and processed to obtain ...

Railway line selection knowledge graph construction method

The invention provides a construction method of a railway line selection knowledge graph, which comprises the following steps that experts tease, summarize and standardize knowledge principles and manual line selection experience, conclude and organize control factors and treatment measures thereof, create a control factor list, tease the control factors under different railway line selection conditions, match corresponding treatment measures, and establish the control factor list. Quantizing the treatment measures to obtain quantized values; constructing a control factor processing domain knowledge ontology; constructing a knowledge graph; corresponding control factors, treatment measures and quantized values are obtained through retrieval according to a chain retrieval rule of'attribute information of entities-head entities-tail entities' and are used for guiding railway line selection. According to the knowledge graph constructed through the method, corresponding treatment measures can ...

Method and device for optimizing running path of high-speed train based on path distribution passenger flow

The invention provides a high-speed rail train running path optimization method and device based on path distribution passenger flow, and the method comprises the steps: firstly calculating the distribution of the passenger flow of a high-speed rail travel path based on the distribution passenger flow of each travel path on a given high-speed rail network, and further determining a candidate starting station and a candidate final arrival station for the running of a high-speed rail train; then, in combination with the calculated passenger flow volume distribution of the high-speed rail travel path, selecting a path as a candidate running path of the high-speed rail train; then, taking the number of running trains of each high-speed rail train candidate running path organization as a decision variable, taking the minimum running cost of the high-speed rail train as an optimization target, and taking interval running train capacity limitation and passenger flow transportation capacity limitation ...

Target detection method and device, computer equipment and storage medium

The invention relates to a target detection method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring a to-be-detected image; performing first target image recognition on the to-be-detected image according to a preset image recognition algorithm to obtain an image recognition result; judging whether the image recognition result contains position information of the first target or not; under the condition that the image recognition result contains the position information of the first target, according to the position information of the first target, the background image information is fused into the to-be-detected image, and an initial detection image is obtained; inputting the initial detection image into a preset image detection algorithm for image detection of a second target to obtain an image detection result; the image detection algorithm is obtained by training the initial image detection algorithm ...

Knowledge graph construction method and device in roadbed design field and storage medium

The invention discloses a knowledge graph construction method and device in the field of roadbed design and a storage medium, and belongs to the technical field of roadbed design. The method comprises the following steps: constructing a knowledge ontology taking roadbed knowledge as a core; obtaining original knowledge data; performing information extraction on the original knowledge data based on a knowledge ontology to generate associated entity data; performing knowledge disambiguation on the associated entity data through a synonym library to obtain target knowledge data; performing knowledge merging on the target knowledge data to obtain merged knowledge data; the combined knowledge data is subjected to knowledge processing of quality evaluation and knowledge reasoning to form a knowledge graph, knowledge in the field of roadbed design is stored in a unified format, a database displayed by the knowledge graph is formed, roadbed knowledge can be displayed more visually and vividly, ...

Backtracking method of vehicle

The embodiment of the invention discloses a vehicle backtracking method, which comprises the following steps of: if preset image acquisition equipment acquires image information of a target vehicle at a preset moment, acquiring image information of the target vehicle on a driving track of the target vehicle; acquiring a traffic state of a target road section between a target image acquisition device and the preset image acquisition device at the preset moment; determining a corresponding speed equivalent value of the target vehicle on the target road section by using the speed coefficient corresponding to the traffic state at the preset moment; according to the speed equivalent value and the preset moment, calculating the time when the target vehicle passes through the target image acquisition equipment to obtain a target moment; querying the target vehicle in image information corresponding to the target moment acquired by the target image acquisition equipment; and after the target vehicle ...

Railway bridge pile group foundation recommendation method

The invention relates to the technical field of building facilities, and discloses a railroad bridge pile group foundation recommendation method, which comprises the following steps of: determining to use a recommendation algorithm or a default configuration algorithm; when the recommendation algorithm is used, an algorithm library is obtained, and the recommendation algorithm and a corresponding rule are obtained; screening the pile foundation configuration recorded in the pile foundation configuration type database according to a corresponding rule of the recommendation algorithm to obtain a screening result; and effective results in the screening results are used as target recommendation pile foundation configuration, so that railway bridge pile foundation recommendation is completed. The pile foundation configuration recorded in the pile foundation configuration type database is screened according to the recommendation algorithm and the corresponding rule, the target recommended pile ...

Device and method for measuring gas-solid diphasic stream parameter in square pneumatic conveying pipe

Regional passenger volume prediction method, system and equipment based on iterative optimization model

The invention discloses a regional passenger volume prediction method, system and device based on an iterative optimization model. The method comprises the following steps: firstly, collecting regional passenger volume related index data; then constructing an iterative optimization model; then constructing a related index data self-optimization model; collecting data of related indexes over the years, performing iterative training, and determining a distribution function in the optimization model; and finally, on the basis of the determined distribution function, predicting the regional passenger transport generation amount Xn in the next Cth year. The method can quantitatively analyze and predict the regional passenger transport generation amount, and is suitable for regions with any structural features.

Behavior analysis method and device, machine readable medium and equipment

The invention discloses a behavior analysis method. The method comprises the following steps: acquiring a target video; sampling the target video to obtain a plurality of target video frames; converting the plurality of target video frames to obtain a plurality of target pictures; the multiple target pictures are distributed to multiple behavior analysis engines, behavior analysis is conducted on the basis of the target pictures through the behavior analysis engines, and each target picture corresponds to one behavior analysis engine. The method comprises the following steps: sampling a path of video to obtain a plurality of target video frames; a plurality of behavior analysis engines use the same path of decoded images through the technology of multiplexing the same video, and the images can be analyzed as required according to the sampling frequency of the behavior analysis engines to generate an analysis result, so that the problem that redundant CPUs (Central Processing Unit) are consumed ...

Area passenger transport line planning evaluation method and system based on analytic hierarchy process

The invention provides a regional passenger transport line planning evaluation method and system based on an analytic hierarchy process, and the method comprises the steps: extracting a railway network topological graph of a regional railway network where a regional passenger transport line is located for a to-be-planned regional passenger transport line, obtaining a technical evaluation index, an economic index and a coordination index of the railway network topological graph, and building a hierarchical structure model; the method comprises the following steps of: layering each index, generating a plurality of judgment matrixes by using a technical evaluation index, an economic sustainable development index and a regional road network connection coordination index after layering, performing consistency check on the plurality of judgment matrixes to obtain index weights of the plurality of judgment matrixes, and constructing an index scoring basis table; and scoring each index in combination ...

Time-based bridge deformation monitoring method and device, equipment and storage medium

The invention belongs to the technical field of bridge monitoring, and discloses a time-based bridge deformation monitoring method and device, equipment and a storage medium. The method comprises the following steps: acquiring monitoring time information of a to-be-monitored bridge; determining Beidou monitoring time and interference radar monitoring time according to the monitoring time information; monitoring through a Beidou satellite according to the Beidou monitoring time so as to determine Beidou monitoring deformation information; monitoring through a ground-based synthetic aperture interference radar according to the interference radar monitoring time so as to determine interference radar monitoring deformation information; and determining deformation monitoring information of the to-be-monitored bridge according to the Beidou monitoring deformation information and the interference radar monitoring deformation information. Through the above mode, different combined monitoring modes ...

Methods and systems for the culture of cells at liquid-liquid interfaces

The present invention relates to methods of culturing adherent cells, in particular adherent stem cells, to confluency at a liquid-liquid interface. The invention also provides cell culture systems useful in the culture of cells at liquid-liquid interfaces. The cell culture systems generally comprise an aqueous cell culture medium and an oil phase, there being a conditioning layer disposed between the cell culture medium and the oil phase comprising a peptide or polymer layer and a surfactant that assists in the culture of the adherent cells (in particular stem cells) at the interface between the two phases.

Methods and systems for the culture of cells at liquid-liquid interfaces

The present invention relates to methods of culturing adherent cells, in particular adherent stem cells, to confluency at a liquid-liquid interface. The invention also provides cell culture systems useful in the culture of cells at liquid-liquid interfaces. The cell culture systems generally comprise an aqueous cell culture medium and an oil phase, there being a conditioning layer disposed between the cell culture medium and the oil phase comprising a peptide or polymer layer and a surfactant that assists in the culture of the adherent cells (in particular stem cells) at the interface between the two phases.

Methods and systems for the culture of cells at liquid-liquid interfaces

The present invention relates to methods of culturing adherent cells, in particular adherent stem cells, to confluency at a liquid-liquid interface. The invention also provides cell culture systems useful in the culture of cells at liquid-liquid interfaces. The cell culture systems generally comprise an aqueous cell culture medium and an oil phase, there being a conditioning layer disposed between the cell culture medium and the oil phase comprising a peptide or polymer layer and a surfactant that assists in the culture of the adherent cells (in particular stem cells) at the interface between the two phases.