15results about How to "Avoid frequent changes" patented technology

The invention discloses a motion group classification and behavior pattern recognition method based on track semantic similarity. The sports group classification method comprises the following steps: step 1, acquiring riding sports data to obtain riding track data; step 2, performing road network matching to obtain a road type of each riding track point; segmenting each riding track according to the road type to obtain a plurality of riding track segments; behavior attributes and motion attributes are determined, attribute calculation is carried out, and semantic assignment is carried out on the riding track segments to obtain semantic track segments; step 3, calculating semantic trajectory similarity to obtain a similarity matrix; and step 4, a similarity network is constructed according to the similarity matrix, community detection is performed by using the similarity network to obtain a plurality of communities, and each community is a sports group category. According to the method, exercise group classification and complex riding exercise behavior pattern recognition can be effectively carried out, and a scientific basis is provided for planning and construction of cities such as greenways and personalized services and management for different exercise groups.

The present invention discloses a rail transit door control system and control method, the control system includes a network configuration control unit, a door control integration platform and a door control terminal device, a door system master control unit is arranged in the door control integration platform, and is used to control the door control terminal device; the door control terminal device is used to execute control; the network configuration control unit is used to configure the priority and transmission time slot of system security data and non-security data, and the network configuration control unit, the door control integration platform and the door control terminal device are connected through a TSN real-time network. The control system of the present invention does not change the overall layout of the existing rail transit door system, does not add additional network equipment, and can conveniently realize application function expansion on the door control integration platform to realize software-defined functions; at the same time, it reduces the problem of synchronously changing the door system master control unit and the door control terminal device hardware and software caused by the change of door system requirements.

The present application belongs to the field of agricultural data processing and intelligent decision-making technology, and relates to a multi-source data-based intelligent decision-making method for water regulation and control of multiple cropping forage grasses. The method obtains soil moisture data, rainfall process data, evapotranspiration estimation data, soil texture data, previous crop straw residue data, and historical emergence feedback data, constructs a field water availability state vector, and performs data reliability evaluation, spatiotemporal consistency correction, and soil moisture level hysteresis discrimination to obtain a sufficient soil moisture level, a medium soil moisture level, or an insufficient soil moisture level. Then, the sowing period, sowing amount, and mixed sowing ratio are determined, straw mulching constraints are generated, and dynamic water monitoring and management are performed. The method can reduce the interference of short-term rainfall, local sampling anomalies, and surface water fluctuations on soil moisture judgment, match the sowing parameters of multiple cropping forage grasses with the field water maintenance capacity, and correct subsequent decisions through monitoring feedback.

The invention discloses a manufacturing system distributed energy consumption real-time control method considering uncertainty, and belongs to the technical field of energy consumption control, the technical key points are that the method comprises the following steps: 1, simplifying a production system into a serial production line composed of M machines, the # imgabs0 # is the machine with the highest energy consumption and the slowest processing speed; 2, a real-time energy consumption control function considers the current energy consumption loss and the future potential energy consumption loss of the production system at the same time in a forward view window, and changes along with the change of the energy consumption state of the manufacturing system; 3, evaluating the corresponding energy of the Markov strategy by adopting a real-time energy consumption control function; step 4, a real-time energy consumption control function, wherein real-time distributed feedback control is integration of a real-time local control strategy and a real-time cooperative control strategy; and step 5, obtaining a control rule and implementing the scheme, and the method has the advantage that the energy efficiency of the manufacturing system is effectively improved by designing a real-time distributed feedback control strategy for a single machine.

A vehicle trajectory tracking method, system and device and a computer readable storage medium belong to the field of automatic driving, and the method comprises the steps: collecting a plurality of groups of vehicle historical driving records, including a rear axle axis distance difference, a yaw angle difference, a rear axle axis speed and a yaw angle speed between a front moment and a rear moment; dividing all the rear axle center distance differences, the yaw angle differences, the rear axle center speeds and the yaw angle speeds into a plurality of grades according to numerical values to obtain a plurality of distance difference grades, angle difference grades, speed grades and angular speed grades; and obtaining a vehicle trajectory tracking model based on the level training, and performing vehicle trajectory tracking. When the rear axle axis speed and the yaw angle speed are controlled according to the rear axle axis distance difference and the yaw angle difference, the control model is trained after all the data are divided according to the grades, so that fuzzy control is achieved, frequent change of the control quantity caused by frequent change of the state quantity is avoided, and driving safety and comfort are improved.

The utility model relates to the technical field of photovoltaic power generation, in particular to folding outdoor photovoltaic power generation equipment, which comprises photovoltaic panel frames which are uniformly distributed left and right, the lower ends of the photovoltaic panel frames at the leftmost end and the rightmost end are connected with insertion rods, and two fixing plates are arranged on the left side and the right side of each photovoltaic panel frame. The fixing plates are fixedly provided with elastic bayonets capable of being matched with the inserting rods in a clamped mode, the ends, away from each other, of the two fixing plates are provided with clamping grooves, magnetic blocks are arranged on the clamping grooves in a clamped mode, a connecting base is connected between every two adjacent elastic bayonets, and the front end and the rear end of each photovoltaic panel frame are each provided with two sliding cavities distributed up and down. A sliding block is arranged in each sliding cavity in a sliding fit mode, a connecting rod is connected between every two vertically-adjacent sliding blocks, a ball joint block is connected between every two adjacent connecting rods, installation of the fixing plate and the photovoltaic panel frame is achieved through an elastic bayonet and an inserting rod, disassembly and assembly are convenient, the ball joint blocks and the wall face are supported through the sliding blocks, and the photovoltaic panel frame is convenient to disassemble and assemble. Therefore, angle adjustment and installation between different wall surfaces are completed.

The application provides a kind of dynamic selection method and system of ultra-wideband positioning base station, comprising: by mobile terminal broadcast query signal, collect the base station response message and corresponding RSSI reaching preset quantity;RSSI validity screening is carried out to the collected base station, and weak signal base station is eliminated;Effective base station is divided into odd-numbered base station group and even-numbered base station group according to the parity of its number;The strongest RSSI of the preset number of base stations is selected from the two groups respectively, and the final positioning base station combination is formed by merging, also includes smooth switching mechanism and GDOP check step.Through the staggered layout mode that odd-numbered base station is deployed on one side of scene and even-numbered base station is deployed on the other side, the application ensures that the selected base station is distributed on both sides of the tag from the mechanism, forms the positioning configuration of geometric distribution balance, effectively reduces GDOP value.At the same time, the cut-off mechanism of limiting the number of acquisition significantly shortens the positioning waiting time, improves the real-time performance of the system.

The application relates to the fields of logistics information technology and intelligent path planning technology, and particularly discloses a logistics path planning method and system based on cooperative distribution, which comprises the following steps: obtaining multi-agent distribution original data, obtaining a cooperative distribution record set through subject normalization and permission marking; performing order exchangeability analysis on the cooperative distribution record set to obtain an order exchangeability result; constructing a candidate handover network, and obtaining a stable handover node set through cooperative handover stability index evaluation and screening; performing order cooperation grouping on the stable handover node set and the order exchangeability result to obtain a cooperative distribution task cluster; performing joint path planning on the task cluster to obtain an initial path, and then obtaining an executable path result through path freezing and dynamic re-planning. The application realizes handover scheme stability pre-screening, goods risk control, subject income balance and local re-planning under dynamic disturbance without exposing original data of the subjects, and improves the fulfillment success rate of cooperative distribution.

The application relates to an engine starting control method and device for a hybrid vehicle, which comprises the following steps: after completing the current starting of the engine, if it is judged that the starting time data meets the predetermined condition, a first coefficient corresponding to the working temperature at the current starting of the engine is calculated according to the starting time data; if it is judged that the first coefficient determines that the clutch torque capacity adaptation needs to be adjusted, the clutch torque capacity adaptation corresponding to the working temperature is adjusted according to the first coefficient and a predetermined compensation amount, and the adjusted clutch torque capacity adaptation and the working temperature are stored correspondingly, wherein the adjusted clutch torque capacity adaptation is used for the next starting of the engine corresponding to the working temperature, so that the clutch torque capacity adaptation can be adjusted frequently, the clutch torque capacity adaptation can converge at different temperatures, and the driving performance is improved.

The utility model relates to the technical field of mining production, in particular to a filling roadway for mechanized mining of a hard rock mine, and aims to solve the problem that the overall efficiency of tunneling mining is affected due to the fact that the roadway is affected by more access roads, lack of a filling return air shaft, short access roads and the like when non-blasting mining is carried out on a non-coal mine by adopting a conventional drilling and blasting mode at present. According to the roadway, the mining filling roadway is arranged, parallel and continuous operation of the roadway is guaranteed, the situation that the mining filling operation position frequently changes along with the drift position is avoided, through air flow is formed through air inlet, air return and the mining filling roadway, the mining length is increased, continuous ore conveying is achieved through the belt conveyor, and the matching degree between mining and conveying is improved; after the mining machine excavates, the filling retaining wall support moves forwards, after the mining machine excavates to the air inlet roadway, the mining machine and the belt conveyor are withdrawn along the mining roadway, meanwhile, the filling retaining wall is built in the filling roadway behind the filling retaining wall support, and therefore rapid and efficient filling operation is achieved.

The invention relates to a noninvasive ventilation and thermal stimulation coordinated time sequence scheduling and safety interlocking method, which comprises the following steps of: when a system is powered on or reset, closing thermal stimulation output, setting a prohibition mark and invalidating a control right token; and collecting and updating the ventilation state according to a preset period, wherein the state information at least comprises a stable sign and an alarm sign. The thermal stimulus output state may be altered only when the token is valid. And when the stable mark is true, the alarm mark is false and the prohibition mark is not set, executing token handover: initiating an application, receiving a grant and feeding back confirmation, and enabling the token to take effect after the confirmation is completed. And if the alarm sign is true or the stable sign is false, a prohibition sign is immediately set, so that the token is invalid and thermal stimulation output is closed. During the setting period of the forbidding mark, forbidding the change of the thermal stimulation output state; and after a preset condition that the stable sign is true and the alarm sign is false is satisfied, the prohibition sign is cleared, the token handover process is allowed to be executed again, and cooperative control and safety protection are realized.

The present invention discloses an on-board autonomous routing method and system using the operation law of a low-orbit satellite constellation. First, the satellite equipment is powered on so that the satellite obtains a constellation topology rule set, and then a corresponding routing table is calculated according to the topology table. When the satellite moves to a north latitude disconnected link area, a topology calibration rule table is used for calibration, a currently used routing table is selected from a routing table set, and subsequent routing tables are enabled in sequence according to time slices. Link monitoring is performed by periodically detecting the link status with all its adjacent satellites. If the link status changes, a link status indication packet is generated, and the packet is diffused to other nodes in the entire network. The satellite that receives the link status indication packet updates all topology tables and routing tables related to the link. Finally, when the satellite passes over a gateway station located on the ground, a connection is established with the gateway station. At this time, the satellite identity is changed to a grounded satellite, and satellite-to-ground service transmission is realized.

The invention provides a routing path determination method, device, equipment, medium and product, and belongs to the technical field of communication, the method comprises the following steps: obtaining environment characteristics and network nodes of a target terrain environment, dividing all the network nodes into at least one subnet according to the environment characteristics, and each subnet is provided with a cluster head node; obtaining to-be-sent data, and determining a routing path of the to-be-sent data based on a preset inter-subnet routing decision algorithm and / or an intra-subnet routing decision algorithm; the inter-subnet routing decision algorithm realizes communication between adjacent subnets based on the cluster head node, and the intra-subnet routing decision algorithm analyzes a plurality of preset parameters corresponding to each network node in the subnet based on an analytic hierarchy process to construct a routing table of the subnet. According to the method, the complexity of a terrain environment can be reduced, communication between the subnets is realized based on the cluster head node, frequent change of a routing path between the subnets is avoided, the routing table is constructed based on multi-dimensional parameters, frequent routing updating due to change of a single parameter is avoided, and long-time service communication is ensured.

The utility model belongs to the technical field of column tube heat exchanger, especially a column tube heat exchanger baffle, including column tube heat exchanger body, the surface fixed mounting of column tube heat exchanger body has the protection shell, the inner wall fixed mounting of protection shell has the baffle, the surface of protection shell is opened the pipe hole, the surface of baffle is opened the flow guide hole, the side fixed mounting of protection shell has the flanging lug, the side of baffle is opened the flow guide groove. Fluid flows in the column tube heat exchanger body in the process, fluid will be guided by the flow guide groove of baffle one side, make fluid flow to both sides, and flow to the flow guide hole opened, reduce the stagnation zone, optimize fluid flow direction, and the drag reduction hole of water drop shape can reduce the resistance of fluid, reduce the generation of vortex, and reduce local resistance, make the flow velocity distribution more uniform, avoid fluid frequently changing direction, improve the heat exchange area, guarantee column tube heat exchanger heat exchange efficiency.

The application provides a kind of intelligent warehousing AGV synchronous belt drive walking buffer device, belongs to intelligent warehousing handling equipment and warehousing automatic guided vehicle technical field.This kind of intelligent warehousing AGV synchronous belt drive walking buffer device, including AGV frame, the top of AGV frame is fixed with bearing top plate, AGV frame is provided with warehousing AGV walking buffer mechanism, warehousing AGV walking buffer mechanism includes guide rail and bearing plate, guide rail is fixed in the vertical direction in AGV frame both sides.The application is by being provided with warehousing AGV walking buffer mechanism, makes walking wheel be able to float along guide rail vertically with floating frame, when automatic guided vehicle (AGV) passes through warehousing ground joint, track weld or local protrusion, walking buffer spring can absorb the vertical impact that walking wheel receives, and after passing through protrusion, walking wheel is pushed down to reset, to improve the ground adhesion of AGV, pass through stability and cargo transportation stability.