18results about How to "Protection needs" patented technology

The invention discloses a control method, device and equipment for a vehicle range extender, and relates to the technical field of vehicle control. The method comprises the steps that a range extending mode currently corresponding to a first vehicle is automatically obtained, the range extending mode is used for indicating the starting priority of a vehicle range extender of the first vehicle, and the vehicle range extender comprises an engine and a generator; under the condition that the electric quantity of the first vehicle is smaller than the preset range extending electric quantity, the engine is started according to the preset rotating speed on the basis of the range extending mode, and the preset range extending electric quantity is preset on the basis of the type of the range extending mode; determining a target rotating speed corresponding to the engine and a target generated power corresponding to the generator according to the type of the range extending mode, and determining a target torque corresponding to the engine in the range extending mode based on the target rotating speed and the target generated power; and the engine is controlled to work according to the target torque, and the vehicle range extending control performance can be improved.

The embodiment of the invention relates to an image retrieval method and device, equipment and a medium. The method comprises the steps that retrieval reference information is acquired; the retrieval reference information comprises first semantic information and first pixel information; based on the first semantic information, performing retrieval from a preset semantic information library to obtain multiple pieces of candidate semantic information matched with the first semantic information; based on the candidate sample images to which the candidate semantic information belongs respectively, retrieving from a preset pixel information base to obtain candidate pixel information corresponding to the candidate sample images respectively; and selecting a target sample image from the plurality of candidate sample images according to the similarity between the candidate pixel information corresponding to the plurality of candidate sample images and the first pixel information, and taking the target sample image as a retrieval result image corresponding to the retrieval reference information. According to the embodiment, it can be effectively guaranteed that the retrieval result meets the requirement, and the retrieval efficiency is guaranteed.

The present application relates to a multi-chain alliance blockchain architecture. The physical nodes in the alliance blockchain include at least one type of proxy nodes, alliance nodes, archive nodes, and light nodes. The alliance blockchain architecture includes a genesis block and several organizations. Several physical nodes are deployed in the organization, and each organization contains several chain structures. The deployment of the alliance blockchain requires at least one proxy node to provide an external interface, an archive node to store complete alliance blockchain data, and three or more alliance nodes to run the consensus protocol normally, where each organization needs to run at least one alliance node. By dividing the node types and modular design, the system can ensure the fast and low-cost construction of the system while ensuring the different business deployment requirements of each organization. The design of the alliance node ensures that a single organization alliance node only stores the block data of its own organization, thereby ensuring the needs of each organization for protecting privacy data.

This utility model discloses a miniature ball bearing for a cooling fan, comprising an outer ring, an inner ring, a cage, a dust cover, and rolling elements movably disposed between the outer and inner rings. Both the inner and outer peripheral walls of the outer ring and the inner ring have circumferentially formed grooves for the rolling elements to move. Both ends of the inner peripheral wall of the outer ring have circumferentially formed stepped grooves for installing the dust cover. The connections between the grooves of the inner ring and the outer peripheral wall of the inner ring, and between the grooves of the outer ring and the inner peripheral wall of the outer ring, have chamfered edges. A retaining spring is provided in the stepped groove for an interference fit with the stepped groove. The inner wall of the retaining spring abuts against the outer wall of the dust cover, while the outer peripheral wall of the dust cover has a clearance fit with the inner peripheral wall of the stepped groove. The curvature coefficient of the grooves of the outer ring is greater than that of the grooves of the inner ring. This utility model solves the problems of traditional miniature ball bearings, such as increased bearing ellipticity due to dust cover installation leading to out-of-tolerance bearing ellipticity, and assembly damage during rolling element installation leading to unqualified rolling element vibration during bearing operation.

The utility model discloses an integrated motorized intelligent guarantee platform. The system comprises a superior station room power supply module, a platform core module, a tail end guarantee module, an emergency power supply module and a full-link sensing module, and the output end of the superior station room power supply module is connected with the input end of the platform core module and the input end of the emergency power supply module. The power output ends of the platform core module and the emergency power supply module are connected with one end of the tail end guarantee module, the data output ends of the platform core module, the tail end guarantee module and the emergency power supply module are connected with the data input end of the full-link sensing module, and the other end of the tail end guarantee module is used for being connected with electric equipment. And the control end of the full-link sensing module is connected with the control end of the tail-end guarantee module. According to the utility model, high-efficiency operation maintenance of the power supply system under the change of the energy supply mode is realized.

The utility model relates to the technical field of sunlight greenhouse strawberry planting, specifically relates to a temperature regulating device for sunlight greenhouse elevated strawberry planting, including the supplementary heating device of adaptation to elevated planting groove, supplementary heating device includes circulating water tank and heat exchange pipe subassembly, and circulating water tank is arranged in one side of elevated planting groove, and is provided with heating component and power component in circulating water tank, and heat exchange pipe subassembly is buried in planting medium of elevated planting groove, and one end of heat exchange pipe subassembly is connected with the water outlet of circulating water tank, and the other end is connected with the water inlet of circulating water tank, supplementary heating device is configured to utilize heating component to heat the water body in circulating water tank, and utilizes power component to pump into circulating water flow to heat exchange pipe subassembly, exchanges heat with the rhizosphere of plant through heat exchange pipe subassembly, forms temperature compensation, realizes the accurate temperature compensation of elevated strawberry rhizosphere area, stabilizes the rhizosphere temperature, equalizes the temperature of different areas of greenhouse, and further guarantees the normal growth of strawberry, reduces the plant frost injury and absolute yield risk.

This application relates to a composite hot water supply system and control method. The composite hot water supply system includes a heat pump unit, a photovoltaic heating device, an electric heating device, a heated water tank, an insulated water tank, a water supply terminal, and a control component, all connected via a piping assembly. The heat pump unit and the photovoltaic heating device are connected in parallel and then in series with the electric heating device. A first series branch in the piping assembly is connected to the outlet of the heat pump unit and the inlet of the photovoltaic heating device, respectively. A second series branch is connected to the outlet of the photovoltaic heating device and the inlet of the heat pump unit, respectively. The control component controls the flow direction of water within the piping assembly. The composite hot water supply system provided by this application, through the switching of the connection states of the heat pump unit, photovoltaic heating device, and electric heating device by the control component, can switch to the optimal operating mode according to the operating conditions, ensuring hot water demand while maximizing energy utilization and reducing the energy consumption of the composite hot water supply system.

The present invention relates to a high-speed power head dedicated to a grinding head tool, comprising a power head housing, a driving gear, a first transmission gear and a mounting shaft are arranged in the power head housing; a servo motor is arranged on the power head housing; a second transmission gear coaxial with the first transmission gear is fixed on the mounting shaft; one or more first output gears are arranged in the power head housing; a first output shaft coaxially fixed with the first output gear is rotatably arranged on the power head housing; a first ER chuck for mounting a grinding head tool is arranged at one end of the first output shaft away from the first output gear; by adjusting the gear ratio of the driving gear and the first transmission gear, the input speed of the servo motor can be easily amplified to the required speed requirement of 8000r / min by adjusting the gear ratio, and at the same time, a two-layer transmission structure of a first transmission gear and a second transmission gear coaxially fixedly connected is adopted, so that the stability of the input and output is good, thereby ensuring the output speed and stability requirements of the grinding head tool.

The invention is suitable for the technical field of display screens, and provides a video stream transmission method, an echo method and related components. The video stream transmission method comprises the following steps: acquiring multiple paths of input video streams; performing refresh rate reduction processing on the multiple paths of input video streams to obtain corresponding multiple paths of refresh rate reduction video streams; synthesizing the multiple paths of refresh rate reduced video streams to obtain a to-be-transmitted video stream, N continuous frames of video pictures in the to-be-transmitted video stream being respectively from N paths of sub-video streams, one path of sub-video stream comprising a video picture corresponding to at least one path of refresh rate reduced video stream, and N being a positive integer greater than 1; and transmitting the video stream to be transmitted. According to the embodiment of the invention, the image resolution and the echo quantity during video stream transmission can be guaranteed in a limited transmission bandwidth, and the field echo demand is flexibly supported.

The invention relates to the technical field of power systems, and discloses a metering device real-time positioning method and device, electronic equipment and a medium. The method comprises the following steps: acquiring a transformer area metering device positioning tree; obtaining a first line distance between the user-side metering devices, and clustering the user-side metering devices based on the first line distance to obtain a plurality of same-meter-box metering device sets; using a plurality of same-meter-box metering device sets to update device numbers stored in corresponding meter box nodes in the station area metering device positioning tree; and storing the obtained navigation position data in the corresponding meter box nodes of the updated background area metering device positioning tree. According to the invention, the navigation position data, the metering device addresses in the court power supply address file and the relative distance between the metering devices obtained according to the HPLC distance measurement data are utilized, so that the absolute spatial position including the association relationship between the user side metering device and the meter box and the geographic position of the device can be accurately determined in real time.

The invention relates to a chemical coal blending method and device and computer equipment. The method comprises the following steps: acquiring spectral data of a to-be-distributed coal flow, and performing batch segmentation processing and regression processing on the spectral data to obtain a batch quality vector of the to-be-distributed coal flow; determining a batch quality code of the batch quality vector according to the hearth tolerance envelope; determining a reference time frame, and constructing a time sequence topological graph based on the reference time frame; determining a target cross-layer edge set pointing to a hearth node in the time sequence topological graph, determining a root node state of the search tree based on the target cross-layer edge set, and performing mixed integer tree search in combination with a priority bit of batch quality coding to obtain a candidate scheme set; performing index evaluation and risk priority ranking on candidate schemes in the candidate scheme set to obtain an ordered feasible solution list; and analyzing the first feasible scheme in the ordered feasible solution list into an equipment readable instruction, and carrying out coal flow scheduling according to the equipment readable instruction. According to the invention, a coal blending scheme capable of meeting various requirements can be provided.

This invention discloses an automated system and method for preparing zinc-silver battery positive electrode plates, belonging to the technical field of battery manufacturing equipment. Addressing the challenges in zinc-silver battery positive electrode plate preparation, such as powder stratification and agglomeration, plate fragility, long sintering cooling time, and low detection accuracy, this invention proposes the following innovations: Powder weighing utilizes a combined rotary screw and belt feeding system, achieving non-extrusion and flipping conveying and low-drop-height flat laying, avoiding cold welding of silver powder and silver-carbon stratification; preheating the mold before pressing improves density uniformity; sintering employs a double-layer circulating tunnel furnace with an air-cooled outlet unit, shortening cooling time; the robotic arm end uses a flexible suction cup and S-curve acceleration / deceleration control to achieve damage-free transfer of fragile plates; and integrated detection includes weighing, five-point coaxial thickness measurement, and deep learning appearance recognition, significantly improving detection accuracy. This invention achieves full-process automation, increasing production efficiency, reducing labor costs, lowering scrap rates, and significantly improving product consistency and reliability.

The invention relates to the technical field of data processing, in particular to a multi-source heterogeneous data real-time processing method and system. The method comprises the following steps: acquiring multi-source heterogeneous original data, synchronously extracting attribute characteristics of the multi-source heterogeneous original data and collecting process state information; performing standardized cleaning processing on the multi-source heterogeneous original data based on the attribute features to obtain standardized heterogeneous data; embedding a priority guide identifier into high-information-density data in the standardized heterogeneous data, and performing symbiotic binding on the acquisition process state information and the standardized heterogeneous data to form heterogeneous standardized bound data; through full-process automatic processing, multi-source data compatibility, large model analysis and dynamic storage, efficient standard processing of the multi-source heterogeneous data is realized, so that the processing efficiency of the multi-source heterogeneous data is improved, and reliable data support is provided for information analysis and decision making.

The invention relates to an aerospace software demand dynamic management system based on a graph and a big data technology, which integrates a knowledge graph and a solution of the big data technology, and automatically analyzes original information such as task demands, a system design scheme report, a subsystem design report and various analysis reports. Generating standardized and structured demand entries; the knowledge graph technology is utilized to construct a demand association network, the traceability of the source of demand items is realized, the dynamic change is based on the basis, and the aerospace information security is ensured by adopting an offline processing mode. Through preliminary verification, the scheme can shorten the demand information processing period by more than 60%, improve the key information structuring rate to 95%, and provide technical support for aerospace software demand dynamic management.

This invention discloses a self-powered ice measuring device and its usage method. It includes: an ice measuring module; an energy harvesting module connected to a rectification, filtering, and voltage stabilization circuit; the rectification, filtering, and voltage stabilization circuit connected to an energy storage module, an ice measuring module, a control module, and a communication module; the energy storage module connected to the ice measuring module, control module, and communication module; during icing, a motor drives a rotating shaft to rotate coaxially, the control module starts recording the icing mass of a single cylinder, and uploads this data to a backend server via the communication module, where the backend server calculates the actual icing situation; when the transmission line begins to melt, the positive temperature coefficient heating layer is electrically heated via the wire, and due to the effect of the insulation layer, heat is directly transferred to the skin surface to achieve ice melting; this solves the problem of insufficient power supply and difficulty in self-melting caused by the inability of ice measuring devices near transmission lines to harvest power from the conductor.

This invention discloses a method for calculating cosine effect loss and optimizing output thermal power in solar energy conversion. First, geographical and temporal parameters are obtained to establish a geometric model of the heliostat field. Based on the solar altitude angle, a cosine loss algorithm model is constructed, deriving a formula for calculating cosine efficiency with local latitude, solar declination angle, and solar hour angle as variables, thus achieving dynamic and accurate calculation of cosine loss. On this basis, an objective function is established to maximize the annual average output thermal power per unit mirror area. Considering constraints such as the heliostat's operating status, absorber tower location, installation height and dimensions, center distance, annular radius, and staggered layout, the optimal mirror field layout parameters and operating strategy are solved through year-round time-domain simulation. This invention accurately quantifies cosine loss through analytical algorithms and combines multi-constraint optimization to improve the annual output thermal power of the heliostat field, reduce shading and cosine loss, and provide support for the efficient operation of tower-type solar thermal power generation systems.

The invention belongs to the technical field of electric vehicle charging facilities, and particularly relates to a charging station intelligent ordered load management and control device which comprises a load acquisition module, an intelligent ordered controller, a communication module and a charging pile interface adaptation module. The overload risk is avoided in advance, passive tripping protection is replaced, safety accidents are avoided, and the service life of the box transformer substation and the charging pile is prolonged by 15-20%; a dynamic power distribution algorithm adapts to load changes, the average utilization rate of the charging pile is improved by 30-40%, power supply resource waste is avoided, user experience is optimized, a priority strategy guarantees important user requirements, charging continuity is ensured through active adjustment, the user complaint rate is reduced by 60% or above, operation cost is reduced, full-process automatic management and control is achieved, and 80% of manual monitoring cost is reduced. Equipment maintenance cost is reduced by 25-30%, compatibility is high, the equipment can be directly connected with existing station equipment, large-scale transformation is not needed, deployment cost is low, and generalization performance is high.

The invention discloses a greening rainwater collection system and a construction method for a sponge city, which relate to the technical field of building engineering, and include a greening rainwater collection unit, a filtering unit and a storage unit, as well as a reuse unit and an intelligent control unit, which are sequentially laid in layers from the surface to the underground; the greening rainwater collection unit utilizes plant roots to fix flow and purify water, and collects rainwater from sidewalks, thereby improving the rainwater collection efficiency and water storage capacity of urban greening areas, while reducing urban waterlogging and runoff pollution; the filtering unit and the storage unit guide water to flow to a deep layer, thereby reducing surface runoff; the reuse unit optimizes rainwater collection, storage and utilization through greening irrigation, non-drinking water utilization and overflow discharge; the intelligent control unit reasonably controls water storage and water distribution based on weather forecasts and historical data, thereby ensuring that the water level of the storage unit is not lower than the minimum water level; the system can guide drainage or water storage during the rainy season, thereby solving the problem of urban waterlogging caused by heavy rains.