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153 results about "Simulation" patented technology

A simulation is an approximate imitation of the operation of a process or system; that represents its operation over time. Simulation is used in many contexts, such as simulation of technology for performance optimization, safety engineering, testing, training, education, and video games. Often, computer experiments are used to study simulation models. Simulation is also used with scientific modelling of natural systems or human systems to gain insight into their functioning, as in economics. Simulation can be used to show the eventual real effects of alternative conditions and courses of action. Simulation is also used when the real system cannot be engaged, because it may not be accessible, or it may be dangerous or unacceptable to engage, or it is being designed but not yet built, or it may simply not exist.

Intelligent navigation control system and method

The invention relates to an uncalibration machine vision-based intelligent navigation control system and an uncalibration machine vision-based intelligent navigation control method, and belongs to the technical field of automation and detection. In order to overcome the disadvantage that whether a technical effect is good or bad depends on uncalibration parameters in a conventional scheme, in vision system-based mobile robot real-time obstacle avoidance and a navigation control method in the technical scheme of the invention, an image is automatically acquired and analyzed for the purpose of realizing the control of a mobile robot platform; the image is processed rapidly from image feedback information obtained directly by utilizing the principal of machine vision; and feedback information is given in a time as short as possible for participating in the generation of a control decision so as to form the position closed-loop control of an end effector of the mobile robot. The scheme improves the adaptability and the work efficiency of a robot, effectively maintains the speed and the precision in an image processing process, enhances the robustness and the stability of a robot control system, and reduces cost input and energy consumption in an implementation process of the technical scheme.
Owner:北京环宇信科技术发展有限公司

Unmanned aerial vehicle route planning method based on improved bat algorithm

The invention provides an unmanned aerial vehicle route planning method based on an improved bat algorithm. According to the method, the optimization success rate is introduced to change the speed updating mode of the individual bats based on the conventional bat algorithm; meanwhile, the chaotic method is applied to initialize the distribution of the individual bats in the search space and the concept of the artificial potential field is utilized to simulate the gravitational field of the ending point and the repulsive field of the starting point and the obstacle so as to accelerate the speedof the individual bats to the optimal solution; and finally the improved bat algorithm based on the chaotic artificial potential field is proposed. Compared with the conventional bat algorithm, the track length is shortened for 36.56%, the planning time is shortened for 56.05% and the obstacle avoidance fitness value is reduced for 49.53% by the method; and compared with the differential evolutionary bat algorithm, the track length is shortened for 27.16%, the planning time is shortened for 27.30% and the obstacle avoidance fitness value is reduced for 42.46% by the method in the unmanned aerial vehicle route planning task so that the method is a route planning algorithm with practical significance.
Owner:SHENYANG AEROSPACE UNIVERSITY

Method and system for precisely inducing passenger flow in multiple scenes of urban rail transit

ActiveCN110428117AImprove the level of informatizationImprove service qualityForecastingInformatizationSimulation
The invention provides a method and a system for accurately inducing passenger flow in multiple scenes of urban rail transit, and belongs to the technical field of urban rail transit train operation control. The method comprises the following steps: establishing a passenger path selection behavior model taking utility maximization as a target under multi-scene induction information; calculating the time when the passenger passes through each section and each transfer station on the effective path, quantitatively evaluating the overall congestion level of the path based on the congestion condition of each section and each transfer station at the corresponding time, and reflecting the congestion degree; sorting the feasible paths based on the passenger path selection behavior model; and forthe sorted feasible paths, optimizing path selection behavior model parameters in combination with a Q-learning learning algorithm to obtain an optimal induction path. According to the method, the feasible paths are sorted in combination with related factors such as congestion degree, time and transfer times, and are recommended to passengers as induction information; and finally, parameters of the path selection behavior model are optimized in combination with a reinforcement learning method, so that the informatization level and the service quality of urban rail transit are effectively improved.
Owner:BEIJING JIAOTONG UNIV

Method and system for generating scheduling item operation order

ActiveCN103488138AReduce outage timeReduce billing intensityEnergy industryTotal factory controlDesign draftsmanLocation status
The invention provides a method and system for generating a scheduling item operation order. The method includes the steps of reading EMS data, judging whether an equipment position state is consistent with an equipment real-time state, if yes, generating task selection according to the operation conducted by an order drafter on equipment to be operated, generating an operation item with the position state opposite to the position state of the equipment according to the operation conducted by the order drafter on equipment in a transformer substation, judging a power source point of a factory and a power source point of a station according to an active power grid power flow diagram, a positive power grid flow diagram and the equipment position state when the switching of the operation method of a power grid is related, and when the power source point of the factory and the power source point of the station are converted into new power source points after the judgment operation, generating a secondary operation item which needs to be changed, wherein the EMS data include the active power grid power flow diagram, the positive power grid power flow diagram and the equipment position state, and the secondary operation item includes a reclosing device and automatic bus transfer equipment. According to the method and system, the order drafting speed is improved, the operation risk of the power grid is lowered, and a large number of paper resources are saved.
Owner:FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID +1

Online teaching processing system for glue dispensing machine

ActiveCN102117571AImprove programming efficiencyImprove efficiencyEducational modelsCommunication interfaceMicrocomputer
The invention relates to the technical field of mechanical automation, in particular to an online teaching processing system for a glue dispensing machine, which is characterized in that the main body of a glue dispensing robot is internally provided with a command interpreter and a main-body communication interface, and at least one of a microcomputer and a teaching programmer is connected with the main body of the glue dispensing robot in an interface communication manner to form an online programming mode or a programming mode or an online mode; and the main body of the glue dispensing robot receives a teaching command or an automatic operation command sent by the microcomputer or the teaching programmer through the main-body communication interface, the teaching command or the automatic operation command is interpreted by the command interpreter and then sent into a storage unit of a motion controller, and the storage unit of the motion controller sends the command to a robot arm for operation execution so as to enable the main body of the glue dispensing robot to complete a teaching task or a processing task. Compared with the prior art, in the online teaching processing system provided by the invention, the robot arm coordinates of the main body of the glue dispensing robot can be synchronously updated when a CAD/CAM (Computer-Aided Design/Computer-Aided Manufacturing) model is modified, thus improving the programming efficiency and precision.
Owner:成都乐创自动化技术股份有限公司

System and Method for Detecting and Evicting Malicious Vehicles in a Vehicle Communications Network

ActiveUS20110214178A1Improve performanceReduce impactMemory loss protectionError detection/correctionMathematical modelSimulation
In a vehicle communication network, some vehicles may be used by attackers to send false information to other vehicles which may jeopardize the safety of other vehicles. Vehicles should be able to detect malicious communications activities and to mitigate the impact of malicious vehicles by evicting (eliminating) suspected malicious vehicles from the system. Evicting a vehicle is to ignore the messages sent from the vehicle for a specified time period. Voting and sacrifice principles are combined using a mathematical model based on the “Mafia Game”. The Mafia Game model focuses on the relative size of the group of attackers within a neighborhood necessary to dominate the entire network in the neighborhood (i.e., to eventually evict all the innocent vehicles).
Owner:PERSPECTA LABS INC

Method for maintaining fixed capacity of high-speed railway network diagram under abnormal events

ActiveCN110843870ARailway traffic control systemsSimulationRail network
The embodiment of the invention provides a method for maintaining the fixed capacity of a high-speed railway network diagram under abnormal events. Train delays are predicted with a GBRT model, an optimized model of a train delay operation substitute diagram based on operation adjustment is constructed, a feasible train operation diagram is generated, and the high-speed railway network capacity under the abnormal event is calculated; the road capacity is calculated from the generated train operation diagram after adjustment, a high-speed railway network capacity weight network under the abnormal events is established, and thus a high-speed railway capacity bottleneck road section is further distinguished; an OPENTRACK simulation software is utilized to simulate high-speed railway operationunder different delay conditions, the capacities of high-speed railway sections and stations under the abnormal events are analyzed, the calculation results are fed back as capacity constraints to analternative diagram optimization model based on operation adjustment, the high-speed railway network capabilities under the abnormal events are iteratively calculated, accurate estimation of the high-speed railway network capabilities is achieved, capacity retention strategies are generated, and macro-references are provided for high-speed railway dispatching and operation diagram adjustments.
Owner:BEIJING JIAOTONG UNIV

Blind spot detection systems and methods

InactiveCN107487333AVehicle fittingsRoad vehicles traffic controlEngineeringVehicle category
Example blind spot detection systems and methods are described. In one implementation, a primary vehicle detects a secondary vehicle ahead of the primary vehicle in an adjacent lane of traffic. A method determines dimensions of the secondary vehicle and estimates a vehicle class associated with the secondary vehicle based on the dimensions of the secondary vehicle. The method also identifies a side-view mirror location on the secondary vehicle and determines a blind spot associated with the secondary vehicle based on the vehicle class and the side-view mirror location.
Owner:FORD GLOBAL TECH LLC

Traffic signal lamp information fusion decision-making method for intelligent network connection vehicle

ActiveCN111932918AImprove recognitionImprove reliabilityArrangements for variable traffic instructionsIntelligent NetworkTraffic capacity
The invention relates to a traffic signal lamp information fusion decision-making method for an intelligent network connection vehicle. According to the method, the intersection traffic signal lamp state information is periodically broadcasted to the outside through a network, the intelligent network connection vehicle in the network communication range receives the information, and meanwhile, credibility feedback of other intelligent network connection vehicles to the information is received, and finally fusion decision making is performed on the traffic signal lamp information sensed by theintelligent network connection vehicles, the traffic signal lamp information sent by the network and the feedback information of the other intelligent network connection vehicles so that the traffic signal lamp information with higher reliability and accuracy can be obtained. According to the method, multiple verification is carried out on traffic signal lamp information on a bicycle, feedback verification of surrounding intelligent network connection vehicles is introduced, the risk that information is tampered in network transmission is reduced, reliability of network transmission of trafficsignal lamp information is improved, the intelligent network connection vehicles can obtain more reliable and accurate traffic signal lamp information, and the safe traffic capacity of the intelligent network connection vehicles at intersections is greatly improved.
Owner:ZHEJIANG LAB

Carrying robot operation control method, device and robot

ActiveCN106970621AReduce the impactImprove motion trajectory accuracyControllers with particular characteristicsPosition/course control in two dimensionsDrive wheelSimulation
The invention discloses a carrying robot operation control method, a device and a robot and relates to the technical field of robots. The method comprises steps of according to the operation distance of a left driving wheel, the operation distance of a right driving wheel and a preset operation track, determining a following error of the left driving wheel and a following error of the right driving wheel; generating a left driving wheel position adjusting instruction and a right driving wheel position adjusting instruction; and sending the left driving wheel position adjusting instruction and the right driving wheel position adjusting instruction to a first servo driving system and a second servo driving system, thereby reducing operation deviations. According to the invention, operation of two independent motors is simultaneously controlled based on the following errors of the left and right driving wheels; the independent control of the motors is changed into coupling control, so effects on operation of the carrying robot imposed by dynamic features of motors are reduced; operation track precision of the carrying robot is improved; and stability of the operation of the carrying robot is improved.
Owner:BEIJING JINGDONG QIANSHITECHNOLOGY CO LTD

Method and device for determining maintenance part demonstration video and safety helmet

PendingCN114299390AImprove maintenance efficiencyImage analysisCharacter and pattern recognitionPoint cloudSimulation
The invention discloses a method and device for determining a maintenance part demonstration video and a safety helmet. The method comprises the following steps: collecting operation field data, and determining information of an operation target according to the operation field data; the information of the operation target is mapped to a three-dimensional model corresponding to the operation target, and the three-dimensional model is any one of a point cloud model and a digital twin model; determining the corresponding position of the operation target on the digital twin model according to the information of the operation target mapped on the three-dimensional model; and determining and playing an operation demonstration video of the operation target on the digital twinborn model according to the corresponding position of the operation target on the digital twinborn model. According to the method and the device, the technical problems of high operation difficulty and low efficiency caused by the fact that equipment maintenance personnel often need to manually check a manual while operating the equipment due to the conditions such as professional technologies and maintenance experience in related technologies are solved.
Owner:YANTAI JEREH OILFIELD SERVICES GROUP

Complex network communication source point positioning method based on time stratification

InactiveCN106789333AAccurately locate the spreadEffective positioning and disseminationData switching networksAviationEntity–relationship model
The invention belongs to the technical field of computer application and relates to a complex network communication source point positioning method based on time stratification. The method can solve the problem that positioning accuracy is low because the number of observation nodes in a large-scale complex network is small, can achieve high observation accuracy by means of a small number of observation nodes, and accordingly can effectively position communication source points at low cost. On the premise that the communication states of only a small number of nodes in the network are monitored, communication source nodes can be accurately positioned. Compared with similar methods, the method has higher positioning accuracy on the premise that the proportion of the observation nodes is unchanged in experiment tests of global aviation networks and BA and ER model networks.
Owner:NORTHEASTERN UNIV LIAONING

Robot elevator taking method and device, terminal and storage medium

PendingCN112783160AImprove elevator efficiencyAvoid downtimePosition/course control in two dimensionsSimulationControl theory
The invention discloses a robot elevator taking method. The method comprises the following steps that target floor information of a robot is sent to an elevator; floor operation information of the elevator is obtained; when the floor distance between the current floor and the target floor is smaller than the preset floor number, the front end of the robot is controlled to turn to the elevator door direction; and the robot is controlled to drive to the front of the elevator door so as to go out of the elevator when arriving at the target floor. The operation information of the elevator is obtained, steering is started when the elevator is about to arrive at the target floor, the elevator getting-out preparation is made before the elevator arrives at the target floor, and the elevator getting-out efficiency of the robot is improved. When the robot encounters the conditions that the robot is hindered, stays for a long time on the non-target floor and cannot reach the target floor, operation is conducted through a corresponding logic method, so that when the robot encounters various conditions in the elevator taking process, corresponding schemes are provided for processing, and downtime caused by logic chaos of the robot is avoided.
Owner:SHANGHAI YOGO ROBOTICS CO LTD
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