81results about How to "Avoid frequent switching" patented technology

The invention discloses a low-frequency ice melting device for a distribution network power transmission line. A power supply module receives electric energy from a transformer and processes the electric energy; the rectifying unit is used for converting power frequency alternating current into direct current; the inversion unit is used for converting direct current into low-frequency alternating current; the information acquisition unit is used for acquiring the line temperature and the icing thickness on the icing line and feeding back the line temperature and the icing thickness to the control unit; the control unit is used for receiving the electric energy, calculating output power and output current according to the parameter information, the line temperature and the icing thickness, generating an ice melting instruction, executing the ice melting instruction and adjusting the output power and the output current; and the cooperative ice-melting switch is controlled according to the ice-melting execution instruction, wherein the inversion unit outputs low-frequency alternating current to the ice-coated line. Low-frequency alternating current is applied to a power transmission line of a distribution network, the ice melting distance is increased, three-phase simultaneous symmetric ice melting is achieved, the asymmetric pole falling phenomenon is avoided, frequent switching is avoided, and the working efficiency is greatly improved.

The invention provides a fan coil air speed control method and device, a computer storage medium and an air conditioner. Determining a wind speed gear adjustment strategy based on the historical wind speed gears; wherein the historical wind speed gear refers to the corresponding wind speed gear before the last shutdown of the fan coil; acquiring a current detection temperature, and comparing the current detection temperature with a limit temperature range to obtain a temperature comparison result; based on the wind speed gear adjusting strategy, the current wind speed gear is adjusted by adopting the temperature comparison result; and the fan coil is controlled by adopting the adjusted wind speed gear, so that the comfort level of indoor users can be improved.

The invention provides a data processing method and device, monitoring equipment, a computer readable storage medium and an intelligent operation and maintenance management system. The method comprises the following steps: creating a first data queue in a user mode, and creating a first thread in the user mode; calling a first thread, acquiring the request data from a second data queue in a kernel mode, and adding the request data into the first data queue; calling a first thread, analyzing the request data in the first data queue to obtain a data analysis result, and representing the request data type of the request data by the data analysis result; and calling a second thread corresponding to the request data type in the user mode, and processing the request data. According to the invention, the data processing efficiency can be improved.

The invention discloses a wind and light storage cooperative control system based on source load matching. The system aligns a source load storage network and communication information and carries out credible evaluation; wind, light and load are predicted, and uncertainty levels are given; calculating a matching degree and a short plate hot spot, and combining network side hard constraints such as voltage, power flow and reverse transmission to obtain an acceptable boundary; when the matching is qualified and the complementary energy is still available, identifying the complementary energy / energy shortage and the reason, quickly checking the transferable margin and loss by the edge, generating a routing plan containing retention time and action budget, and scheduling the stored energy and the flexible load in a rolling manner; meanwhile, the risk budget and standby are written back according to feasibility, prediction uncertainty and communication quality, gray release and automatic rollback are achieved in cooperation with degradation and playback scoring, and consumption and traceability are improved.

The invention relates to the technical field of mobile communication, in particular to a communication network switching method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring wireless local area WiFi network signal strength and long term evolution LTE network signal strength of a target terminal; performing signal prediction according to the WiFi network signal strength and the LTE network signal strength based on a signal strength prediction model to obtain a new wireless NR network signal strength; and performing communication network switching on the target terminal according to the LTE network signal strength and the NR network signal strength. According to the invention, the communication network switching of the target terminal can be realized according to the actual conditions of the LTE network signal strength and the NR network signal strength, the situation that the communication network is frequently switched when the target terminal receives the WiFi network signal, the LTE network signal and the NR network signal at the same time is prevented, the stable switching of the communication network of the target terminal is ensured, and the user experience is improved. And the communication quality of the user is ensured not to be influenced by frequent switching of the communication network.

The utility model relates to the technical field of resin cartridge installation equipment, and provides an anchor rod trolley resin cartridge anchor rod swing installation device which comprises a propelling beam and an installation base, one end of the installation base is connected with the propelling beam, the other end of the installation base is rotationally connected with a rotary swing arm, and the installation base is provided with a swing motor used for driving the rotary swing arm to rotate. A guide pipe and a front feeding oil cylinder are arranged on the rotary swing arm, a coil feeding pipe is movably inserted into the guide pipe in a penetrating mode, a cylinder barrel section of the front feeding oil cylinder is fixed to the rotary swing arm, and a coil feeding clamping sleeve connected with the coil feeding pipe is arranged at the end of a piston rod of the front feeding oil cylinder. When the resin roll is installed, the roll feeding pipe communicated with the resin roll is fed into the anchor rod hole, the resin roll installation work is executed, the installation efficiency is improved, frequent equipment switching is avoided, and the engineering cost is reduced.

The invention discloses a control method for withdrawing a slender medical instrument and a surgical robot. The control method for withdrawing the slender medical device comprises the following steps: receiving an instruction for withdrawing the slender medical device; the slender medical instrument is clamped; controlling the slender medical instrument to move in the direction away from the clamping position; acquiring an acting force value F1 applied to the slender medical device at the starting moment of controlling the slender medical device to move towards the direction far away from the clamping position; after the first preset time, an acting force value F2 at the current moment for controlling the slender medical instrument to move in the direction away from the clamping position is obtained; according to the F1 and the F2, judging whether the slender medical instrument completes withdrawing action or not, and executing corresponding operation according to a judgment result. According to the control method, the slender medical instrument is withdrawn from the catheter to the preset position through mechanical operation, frequent switching between mechanical operation and manual operation is avoided, and therefore the efficiency of an interventional operation is improved.

The utility model relates to visual calibration target device technical field, specifically disclose a kind of visual calibration target device of steel trestle dynamic displacement monitoring, including target mechanism, the upper end side of the target mechanism is provided with wire arrangement mechanism, the front lower end of the target mechanism is provided with auxiliary flickering mechanism;The target mechanism includes mounting plate, suspension pole, target main body, wiring seat, lamp holder, outer ring reference lamp bead, intermediate layer reference lamp bead and inner ring reference lamp bead.This scheme can adapt to different monitoring distance and camera focal length by the reference lamp bead design of multiple circle layer distribution, ensure target quick identification and stable tracking by outer ring double-layer concentric circle lamp bead under long-distance large visual angle, provide high-precision positioning by intermediate layer polygon lamp bead in medium distance, and rely on snowflake inner ring lamp bead to realize ultimate calibration in nearest distance, only single target can cover the full-scale monitoring requirement from bridge overall shaking to local slight deformation.

The invention discloses a monthly power factor regulation and control method, a monthly power factor regulation and control device, monthly power factor regulation and control equipment and a medium, and belongs to the technical field of optical storage load micro-grids. The active power of an energy storage system in the optical storage load micro-grid is regulated and controlled according to the electricity price of the power grid in each time period and a preset gateway active maintenance threshold value; regulating and controlling the reactive power of an inverter system and the reactive power of an energy storage system in the optical storage load micro-grid according to the monthly power factor required value and a preset gateway reactive maintenance threshold value; the active power of the energy storage system, the reactive power of the inverter system and the reactive power of the energy storage system are regulated and controlled, so that the monthly power factor of the gateway in the optical storage load micro-grid meets the required value. Through the method, the monthly power factor of the gateway can meet the required value on the premise that the operation performance and the service life of the two-quadrant reactive compensation capacitor are not affected.

The utility model relates to the technical field of teaching equipment, and specifically discloses a single-person command and training device for virtual-reality combined emergency drills, which includes: a table body, a first display screen component and a second display screen component; a VR device cabin and a mainframe cabin are detachably arranged on the table body; the VR device cabin is used to accommodate the VR device; the mainframe cabin is used to accommodate the mainframe; the first display screen component and the second display screen component are both installed on the tabletop of the table body, and the included angle between the display end faces of the first display screen component and the second display screen component is 90 degrees to 180 degrees; the first display screen component is used to store training materials and perform screen sharing with multiple student terminals; the second display screen component is wirelessly connected to multiple VR devices, and is used to issue VR tasks to each VR device and receive the training data returned by each VR device. The utility model can not only improve the training efficiency of the device, but also improve the layout rationality of each accessory.

The application discloses a gateway-based CAN bus redundancy routing method and device, and is applied to a CAN network comprising a gateway controller, a first CAN bus link and a separately arranged second CAN bus link. The method comprises the following steps: firstly, obtaining a sending moment of a sending request issued by an application layer and an acknowledgement moment of a sending completion interrupt generated by a bottom layer hardware; based on the acknowledgement moment and the sending moment, obtaining a real-time load parameter of the link under a current message; if the real-time load parameter exceeds a preset load parameter threshold, determining that the first CAN bus link is in an abnormal state of high load, triggering a dynamic routing switching, and switching data transmission of a target node being the preset node to the second CAN bus link for transmission. The application can effectively monitor the bus state without occupying additional bus bandwidth and with low calculation power consumption, realizes dynamic targeted switching on key nodes, and guarantees the real-time performance and reliability of key service data of the whole vehicle.

The invention discloses a communication fault processing method and device for a vehicle-mounted terminal. The method comprises the following steps: periodically detecting a network registration state of the vehicle-mounted terminal; and if it is determined that the network is successfully registered, identifying connection states of the plurality of preset network access channels and obtaining a result. And based on the result, selecting a first target network access channel which does not establish effective connection within the first set duration from the channels, and performing progressive connection retry between the first target network access channel and the first target network access channel. And meanwhile, selecting a second target network access channel which does not establish effective connection within a second set time length (greater than the first set time length) from the channels, accumulating connection failure time of the second target network access channel, and sequentially executing different levels of recovery operations according to different preset connection threshold values. Besides, when the network registration state satisfies a preset abnormal condition, network injection abnormity is determined, network injection abnormity time is accumulated, and recovery operations of different levels are executed in sequence according to different preset network injection thresholds so as to guarantee stable communication of the vehicle-mounted terminal.

The invention relates to an unmanned logistics vehicle steering control method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring state information and environment information of a vehicle; respective steering cost of various preset steering modes is calculated according to the state information and the environment information, wherein the various preset steering modes comprise Ackerman steering, front and back double-steering and bidirectional driving; the steering mode of the current vehicle is obtained, if the steering mode with the minimum steering cost is different from the current steering mode and the cost difference between the steering mode with the minimum steering cost and the current steering mode is larger than a preset switching threshold value, the steering mode is determined as a target steering mode, and otherwise, the current steering mode is maintained; and controlling the vehicle to run in the target steering mode. By the adoption of the method, the unmanned logistics vehicle can autonomously select the optimal steering mode, frequent mode switching is avoided, and the driving efficiency and smoothness in different scenes are improved.

The application relates to a power distribution network voltage control method based on a reactive virtual power plant, which comprises the following steps: constructing a double-layer collaborative regulation model based on discrete and continuous reactive regulation equipment in the power distribution network under the management of the reactive virtual power plant, and establishing power distribution network physical constraints; under the power distribution network physical constraint condition, day-ahead scheduling converts the optimization control of the discrete reactive regulation equipment into a first multi-agent reinforcement learning of a discrete action space strategy for solving, and generates day-ahead scheduling planning to be issued to an intra-day correction layer; under the conditions that the power distribution network physical constraints and the day-ahead scheduling plan are taken as boundary constraints, intra-day correction converts the control of the continuous reactive regulation equipment into a second multi-agent reinforcement learning of a continuous action space strategy for solving, and generates intra-day correction instructions; the continuous reactive regulation equipment is adjusted based on the intra-day correction instructions to obtain node voltage in the power distribution network; the node voltage in the power distribution network is fed back to the day-ahead scheduling layer to realize closed-loop collaboration of voltage optimization regulation.

The invention provides a communication method and device based on queue pair switching, equipment, a medium and a program product, and relates to the technical field of network communication, and the method comprises the steps: determining a to-be-communicated target node, determining the state information of a first reliable connection queue pair between the to-be-communicated target node and the state information of the first reliable connection queue pair, the state information at least comprises a state machine value of the first reliable connection queue pair and a transmission failure timestamp; when the value of the state machine of the first reliable connection queue pair is in a first state and the time interval between the transmission failure timestamp and the current moment is smaller than a preset time interval threshold value, determining to adopt a second reliable connection queue pair to communicate with the target node; and when the value of the state machine of the first reliable connection queue pair is a first state and the time interval between the transmission failure timestamp and the current moment is greater than a preset time interval threshold, determining to communicate with the target node through the first reliable connection queue pair. The efficiency of large-scale training tasks can be improved.

The invention discloses an energy-saving control system for an MAU (Multi-Access Unit) all fresh air unit, which belongs to the technical field of energy-saving control, and comprises a plurality of groups of detection modules arranged in the same place with an air supply port of a fan; the communication transmission module is electrically connected with the plurality of groups of detection modules and transmits information of the detection modules backwards; the calculation module is used for receiving the information of the communication transmission module and calculating the air supply volume and the air supply temperature and humidity based on the information; and the output control module is used for receiving the calculation result of the calculation module and controlling the cold supply power of the fan based on the result. The detection module senses the operation condition of the equipment and the number of personnel in the field, so that the influence parameters of the equipment and the personnel are added in the calculation of the total heat load Qt in the field, the calculation of the total heat load Qt is more accurate, the regulation and control of the cold supply power of the MAU full fresh air unit are more reasonable, and the use effect of the equipment is better.

The present invention discloses a method and system for controlling the uniform speed operation of a full-mold scimitar mechanism based on a single oil cylinder drive, and relates to the field of aerospace wind tunnel tests. In a sub-transonic wind tunnel test, the running speed of the oil cylinder is fixed, so as to control the high-frequency change of the oil cylinder displacement through a uniform speed operation control algorithm, and complete the uniform speed operation control of the scimitar mechanism in a wide speed range. The present invention provides a method and system for controlling the uniform speed operation of a full-mold scimitar mechanism based on a single oil cylinder drive, which uses a single set of oil cylinder speed control parameters to achieve uniform speed operation of the scimitar mechanism in a wide speed range, avoids frequent switching of the oil cylinder speed control parameters during use, and improves the convenience of system use.

The utility model relates to an automatic water supply control device, it includes: water pool, the depth of water pool is H, first liquid level switch sets up in water pool, and the height of distance water pool's bottom is L, second liquid level switch sets up in water pool, and the height of distance water pool's bottom is S, first relay, first liquid level switch's output end is connected with first relay's trigger input end, alarm device, second liquid level switch's output end is connected with alarm device, inlet pipe, one end is connected with water source, and the other end is led into water pool, electromagnetic control valve sets up on inlet pipe for controlling the on-off of water route in inlet pipe, the control end of electromagnetic control valve is connected with first relay's output end, wherein, 0.2H <= L <= 0.3H, 0.7H <= S <= 0.8H. The application can realize the water level monitoring for factory production water pool, and can realize automatic water supply, and work is safer and more reliable.

The utility model provides a scalp tensioning device and a hair transplantation seat comprising the scalp tensioning device, the scalp tensioning device is arranged on the hair transplantation seat, the scalp tensioning device comprises a contact part, a driving part and a driving part, the contact part is used for being in contact with the scalp, and the driving part is used for driving the driving part to rotate. The driving part is arranged on the hair transplanting seat, the driving part is electrically connected with a control module of the hair transplanting seat, and the driving part is used for driving the contact part to tension or loosen a hair follicle extraction area of the scalp; the adjusting mechanism is arranged on the hair transplanting seat, and the adjusting mechanism is used for driving the driving part to rotate, so that the position of the contact part corresponds to the position of the scalp. By arranging the contact part and driving the contact part to move through the driving part to replace the mode that the scalp is tensioned through a silica gel rope, tensioning of the scalp of a user is achieved, the tensioning degree is guaranteed, and meanwhile the automation degree is higher compared with the mode that the silica gel rope is tensioned through hands.

The present invention belongs to the technical field of photovoltaic power generation, and specifically relates to a trigger device for an auxiliary energy storage unit of photovoltaic power generation; the technical scheme adopted is: comprising a main base plate, an air pressure monitoring chamber module and a switching control module, the air pressure monitoring chamber module and the switching control module are both arranged on the main base plate, the output value of the air pressure monitoring chamber module is connected to the switching control module and output after switching control; the air pressure monitoring chamber module comprises an air pressure monitoring chamber component A and an air pressure monitoring chamber component B which are arranged at intervals and relatively, a sealing plate is arranged between the air pressure monitoring chamber component A and the air pressure monitoring chamber component B, the air pressure monitoring chamber component A and the air pressure monitoring chamber component B are both arranged with openings on one side close to the sealing plate, and the sealing plate is used to seal the opening.

The application relates to the technical field of body sense interaction and virtual character control, and discloses a surfboard body sense input and character linkage system, which comprises a board body, a tension detection unit, a posture detection unit and a central processing unit. The system collects cable tension through the tension detection unit, collects an original pitch angle and a roll angle through the posture detection unit, and a decoupling module is built in the central processing unit. A mechanical coupling pitch angle is calculated according to the cable tension and a preset mechanical coupling coefficient, the original pitch angle is subtracted by the coupling pitch angle to obtain a net pitch angle, so that the physical torque interference is eliminated and a speed instruction is generated. Meanwhile, the system dynamically adjusts a roll dead zone threshold according to the tension intensity by using a dead zone module, and identifies a drift state based on a motion time window and a multi-dimensional parameter threshold through a judgment module. The application effectively solves the interference problem of the cable tension on posture recognition, and realizes accurate judgment and stable control of complex combined actions.

The embodiment of the invention provides a network communication method and system, electronic equipment and a medium, and the method comprises the steps: carrying out the data assembly processing of target communication data, obtaining target byte stream data, and determining the target routing information corresponding to the target byte stream data based on a preset connection initialization device. And then, according to the target routing information and the target byte stream data, a target connection identifier is determined from a preset working channel group, and the preset working channel group runs based on a single-thread polling mechanism. And finally, calling communication connection between the local and the target remote communication node through a preset asynchronous I / O interface and the target connection identifier, so as to send the target byte stream data to the target remote communication node. Therefore, the network communication performance is improved on the basis of considering the communication flexibility.

The invention discloses an image generation method and device, equipment and a medium, and the method comprises the steps: monitoring an input event triggered by a user in an editing region of a preset operation interface, recognizing an SVG code inputted in the editing region, determining a label in the SVG code, an attribute related to the label, and an attribute value corresponding to the attribute, and according to a preset SVG label dictionary, generating an SVG tag; the SVG code is subjected to validity detection, after validity detection is passed, a target vector image corresponding to the SVG code is synchronously generated in a preview area of a preset operation interface, and the preset SVG label dictionary comprises standard labels, standard attributes related to the standard labels and standard attribute values corresponding to the standard attributes. The simultaneous editing and previewing functions of the SVG image in a single operation interface are realized, and the creation and editing efficiency of the SVG image is improved.

This invention relates to a method for energy saving and pressure pulsation suppression in the hydraulic system of engineering vehicles, comprising the following steps: S1: Real-time acquisition of the operating parameters of the hydraulic system; S2: Inputting the operating parameters into a pre-constructed joint prediction model of energy consumption and pulsation to obtain predicted energy consumption and pressure pulsation values ​​in the future time domain; S3: Using the minimum weighted sum of the predicted energy consumption and pressure pulsation values ​​as the objective, a rolling optimization algorithm is used to solve for the optimal control parameter sequence; S4: Applying the first control parameter in the optimal control parameter sequence to the adjustable element of the hydraulic system. This invention can save energy and reduce consumption, accurately regulate and adapt to different operating conditions.

This application provides a 3D Gaussian rendering optimization system and method based on CPU hierarchical splitting and GPU driving, relating to the field of 3D graphics rendering technology. This application divides the 3D Gaussian scene into multiple bounding boxes on the CPU side, determines the view distance level, protection level, and reconstruction cost level of each bounding box, and uses the highest of these three levels as the lower limit of the target level. The scheduling module adjusts the current rendering level frame by frame, determining the summary state, partial unfolding mode, or unfolded state based on screen error and GPU budget. On the GPU side, representative Gaussian points and unfolded 3D Gaussian points are uniformly sorted and rendered, and the frame rate and the total number of activated 3D Gaussian points are fed back. This reduces the amount of data submitted, takes into account the protection of key areas, achieves smooth hierarchical transitions, and forms a rendering feedback loop, improving the frame rate stability and resource utilization of real-time rendering.

The application discloses a low-altitude relay and channel switching method based on star flash technology and a communication node. The method comprises the following steps: confirming that a direct link with a target node cannot meet a service transmission requirement, and sending a relay discovery request to a neighboring area; receiving a relay response returned by at least one node, wherein the relay response carries state information of the corresponding node, and the state information comprises at least one of the following: link quality of a candidate node to the target node, a load state of the candidate node, buffer occupancy of the candidate node, a forwarding success rate of the candidate node, link stability in a short time window, and whether to allow to undertake a relay responsibility; performing relay performance evaluation on the corresponding node according to the state information, and determining a target relay node from the at least one node according to an evaluation result. Some embodiments of the application ensure the stability and accuracy of relay selection, so that the selected relay can truly meet the requirements of service transmission.

The application relates to a chopper control method and device, which comprises the following steps: calculating a braking power coefficient according to a motor braking force and a motor rotating speed; setting a chopper control mode according to a traction braking state and the braking power coefficient; if the current traction braking state is a traction mode or a braking mode and the braking power coefficient is less than a first preset threshold, setting the current chopper control mode as a first chopper control mode; if the current traction braking state is a braking mode and the braking power coefficient is greater than a second preset threshold, setting the current chopper control mode as a second chopper control mode; if the current traction braking state is a braking mode and the braking power coefficient is not less than the first preset threshold and not greater than the second preset threshold, keeping the last chopper control mode as the current chopper control mode; and performing chopper control according to a chopper duty cycle calculated according to the current chopper control mode.

The application discloses a kind of multi-level control mode adaptive switching method and system based on task constraint, different task type identification and corresponding task constraint strategy information are issued by remote control center for different task types, nest side edge computing controller continuously acquires network, task and unmanned aerial vehicle state in task start preparation stage and task execution process, dynamically determines the most suitable target control mode, and when target control mode is inconsistent with current control mode, control right handover, state synchronization and instruction semantic level switching are performed, to realize the coordinated and consistent adjustment of control mode, control right attribution, task state machine and instruction semantics.The application improves the task execution continuity, safety and stability of unmanned aerial vehicle system under different network conditions and task constraints.