28results about How to "Balance cost" patented technology

The present application relates to the technical field of in-vehicle network communication, and discloses a lightweight and secure communication method and system between ECUs in an in-vehicle network. The communication method comprises an ECU identity authentication phase: each ECU interacts with a CAN gateway, and the CAN gateway performs batch identity authentication to verify the legality of all ECUs; a data classification phase: according to the data sensitivity, the data to be transmitted is classified as confidential data or non-confidential data; a data transmission phase: if the data to be transmitted is confidential data, the sender ECU uses a session key and an ASCON encryption algorithm to encrypt and authenticate the plaintext of the confidential data, generates ciphertext and authentication parameters, and sends a data packet containing the ciphertext and authentication parameters to the receiver ECU; if it is non-confidential data, the sender ECU uses a session key and an ASCON encryption algorithm to only sign but not encrypt the plaintext, generates an authentication tag, and sends a data packet containing the plaintext and the authentication tag to the receiver ECU. The present application takes into account the security and computational overhead of in-vehicle ECU communication.

This application provides a method for recommending travel routes, an in-vehicle system, and a storage medium, relating to the field of in-vehicle tourism service technology. The method can obtain the route length, travel time, required travel cost, and average experience score of all attractions for each travel route. Then, for each travel route, it determines a first sub-rating corresponding to the route length, a second sub-rating corresponding to the travel time, a third sub-rating corresponding to the travel cost, and a fourth sub-rating corresponding to the average experience score. A weighted average of the first, second, third, and fourth sub-ratings for each travel route is taken to obtain a recommended rating for each travel route. Based on the top N% of travel routes ranked by their recommended ratings, recommended routes are output, which can balance short route length, short travel time, low travel cost, and high average experience score, achieving a balance between the user's itinerary, travel time, cost, and overall experience.

The invention relates to the technical field of automobile charging piles, and discloses a charging pile group fault detection method, system and device, a medium and a product, and the method comprises the steps: obtaining the charging behavior data of a target charging pile group and a preset normal charging behavior habit model, and judging whether the target charging pile group is abnormal in charging or not; after it is judged that charging abnormity exists in the target charging pile group, responding to the random number disturbance request for each charging pile connected with the electric vehicle in the target charging pile group, generating a plurality of random numbers through the random number disturbance request, and adjusting charging output parameters of the charging piles according to the random numbers; and the charging state data, corresponding to the charging output parameters adjusted each time, of the electric vehicle in the charging stage are obtained, the fault condition of each charging pile is determined according to the charging output parameters adjusted each time and the charging state data, and therefore the fault detection cost and efficiency can be balanced while the fault detection timeliness can be guaranteed.

The embodiment of the invention discloses a silicon-based negative electrode material and a preparation method thereof, a negative electrode plate and a battery, and belongs to the technical field of batteries, the silicon-based negative electrode material is obtained by sintering a precursor, and the precursor comprises a silicon source, a lithium source and a fluxing agent; wherein the fluxing agent comprises lithium fluoride, and the fluxing agent accounts for 1%-8% of the total mass of the silicon source and the fluxing agent. According to the silicon-based negative electrode material provided by the invention, the volume expansion effect can be reduced, meanwhile, the integrity of an SEI film can be ensured, the loss of active lithium is reduced, and the effective energy density of a negative electrode plate and the cycling stability of the silicon-based negative electrode material are improved.

The utility model provides a kind of multi-channel high-speed storage backplane, including high-speed interface module, hard disk interface module, power supply module, management and control module and protection and maintenance module;The high-speed interface module is connected with mainboard by PCIe protocol;The hard disk interface module is connected with the high-speed interface module, for connecting and managing NVMe hard disk and SATA / SAS hard disk;The power supply module is for providing redundant power input for each module;The management and control module is connected with the hard disk interface module, for realizing the state monitoring and communication control to hard disk;The protection and maintenance module is connected with the power supply module and hard disk interface module, for realizing the circuit protection and hot plug function support to power supply and hard disk interface.The utility model has realized high-speed, stable and scalable data storage capacity, significantly improve the performance, reliability and operation efficiency under large-scale storage scene.

The utility model provides a large-specification stainless steel pipe fitting outer circle machining tool which comprises a lead screw, a fixed end cover and a locking nut. Central holes are formed in two ends of the screw rod body; the length of the lead screw body is larger than the axial length of the workpiece, and the two ends of the lead screw body extend out of the two ends of the workpiece. The two ends of the workpiece are concentrically positioned and adaptively provided with the fixed end covers, end cover center holes formed in the fixed end covers and the lead screw are concentrically positioned and adaptively installed, the end cover center holes transfer the center of the workpiece to the centers of the fixed end covers, and the outer threads at the two ends of the lead screw are screwed and adaptively provided with the locking nuts which clamp the fixed end covers of the workpiece. Therefore, the workpiece and the lead screw are concentrically locked, fastened and connected into a whole. According to the utility model, the technical problem that a large-specification stainless steel pipe fitting workpiece cannot be clamped and machined on an ME1332A cylindrical grinding machine at high precision is solved, the machining precision grade can reach IT5 and IT7, the surface roughness is less than 0.2 mu m, and high-precision, high-efficiency and low-cost machining of the outer circle of the large-specification stainless steel pipe fitting workpiece is realized.

A wear-resistant agitator blade for mixing phosphate rock slurry includes a blade body with a wear-resistant layer laser-clad on the flow-facing edge. The outer arc edge of the wear-resistant layer is beveled, and the wear-resistant layer thickness is 3-5 mm. This invention achieves an optimal balance between cost and performance through the wear-resistant design of the flow-facing edge, significantly extending the service life of the agitator blade in high-solids-content media, and substantially reducing equipment maintenance frequency and related costs. It demonstrates significant technological advancement and social and economic benefits.

The utility model provides a kind of power module of hybrid power module and double motor controller, and power module includes: heat dissipation plate, first power module and second power module installed on the heat dissipation plate and the circuit board connected with the first power module and the second power module;Wherein, the first power module and the second power module are different packaging type power module, the first power module is suitable for driving motor side, and the second power module is suitable for generator side.The utility model integrates different types, different packaging power module on the same heat dissipation plate, constructs a kind of hybrid power module architecture for double motor system, effectively solves the performance redundancy and cost problem caused by using same type high-cost module in traditional double inverter system or the contradiction that using same type low-performance module leads to driving side performance deficiency.

The application relates to the field of automatic driving of an automobile, and discloses a vehicle lateral control method and device, computer equipment and a storage medium, the method comprising the following steps: acquiring vehicle preset parameters, space prediction parameters and prediction custom parameters, and configuring a state prediction model according to the prediction custom parameters; processing the vehicle preset parameters and the space prediction parameters through the state prediction model to obtain a prediction state quantity; acquiring a path reference sequence, determining a position prediction error according to the path reference sequence and the prediction state quantity; acquiring a custom weighting matrix, and determining a control gain according to the custom weighting matrix and the prediction state quantity; determining a prediction control increment according to the position prediction error and the control gain; acquiring a current control quantity, and determining a target control quantity according to the prediction control increment and the current control quantity. The application can improve the accuracy and stability of vehicle lateral control.

This invention discloses a lightweight image super-resolution reconstruction method, system, and storage medium, relating to the field of image processing technology. Specifically, it includes: acquiring high-resolution and low-resolution images of the target as training sample pairs; constructing a lightweight image super-resolution reconstruction model comprising a shallow feature extraction module, a deep feature extraction module, a multi-layer feature fusion module, and an image reconstruction module. The shallow feature extraction module performs shallow processing on the low-resolution image; the deep feature extraction module consists of multiple cascaded enhanced separable residual feature refinement blocks, extracting shallow features to obtain multiple deep features; the multi-layer feature fusion module is used to obtain fused features; and the image reconstruction module is used to output the high-resolution image. The trained model is used to reconstruct the low-resolution image to be processed. This invention has a simple network structure and achieves accurate reconstruction of image texture and details using only a low number of parameters and computational cost.

The application provides a circuit for improving DC voltage resistance of a TVS chip, which adds an input voltage slope detection part on the basis of a traditional MOS tube type TVS chip, so that the TVS chip can quickly respond to a surge and quickly discharge the surge current. When the input voltage rising rate is relatively slow, the circuit of the TVS chip with high DC voltage resistance uses the characteristic that the source-drain end voltage resistance of a power device is high when the VGS voltage is 0V, uses a 16V power device to bear a 22V DC voltage, greatly reduces the area of the power device, and further reduces the production cost. Since the second NMOS tube MN4 disconnects the response loop of the TVS chip when the DC voltage resistance is high, the power consumption of the TVS chip is very small during normal operation, and the endurance of a battery-powered device is prolonged to a certain extent.

The invention provides an iron complex, the structural general formula of the iron complex is as shown in formula (I), in the formula (I), R1-R12 are respectively and independently selected from hydrogen, C1-C6 alkyl, halogen, C1-C6 alkoxy, nitryl and aryl, X is halogen, and R13 is selected from C3-C7 alkenyl. The iron complex with a specific structure provided by the invention is suitable for being used as a main catalyst of an ethylene oligomerization catalyst. The ethylene oligomerization catalyst using the iron complex as the main catalyst also has high oligomerization reaction activity at a high temperature (more than 60 DEG C), when the oligomerization reaction activity is increased to about 60 DEG C from low to high, the catalytic activity is reduced slowly, and the oligomerization reaction is rapid in initiation, stable in operation and good in repeatability; and when the temperature is higher than 60 DEG C, condensed water can be used as a condensing medium for reaction, so that the energy consumption of a process device is reduced. The invention also provides a preparation method and application of the iron complex, an ethylene oligomerization catalyst and an ethylene oligomerization method.

The invention discloses a solid state disk master control device, and belongs to the technical field of solid state disks. A mixed storage architecture is adopted and comprises a controller, a nonvolatile storage medium, a volatile storage medium and a plurality of NAND flash memories, the nonvolatile storage medium and the volatile storage medium are used in a mixed mode, and hierarchical and classified storage is carried out according to data characteristics; the nonvolatile storage medium and the volatile storage medium are integrated in the same address space through the controller, and intelligent hierarchical management of data is realized. Host write-in data is directly cached in a nonvolatile medium, metadata is stored in a volatile medium, and when the data size reaches a set threshold value, the data size is automatically brushed down to an NAND flash memory. According to the invention, an external capacitor is not needed, standby power-free data protection is realized through hardware architecture innovation, the material cost is obviously reduced by 20-40%, the PCB layout space is released, and the data loss risk caused by capacitor aging is fundamentally eliminated.

This invention discloses a low-temperature polyether demulsifier for oil and gas gathering and transportation and its preparation method, relating to the field of petrochemical technology. The key technical points include: using cashew nut shell powder, pentaethylene hexamine, and bisphenol F in a specific molar ratio as an initiator, and preparing a composite initiator via formaldehyde condensation; incorporating propylene oxide and ethylene oxide through staged block copolymerization to form a polyether backbone; introducing fluorinated epoxy monomers for end-fluorination modification; and finally, performing chain extension and crosslinking with adipic acid and epichlorohydrin to obtain a demulsifier with a molecular weight of 8000~12000 Da, a fluorine content of 5.5~6.5 wt%, and a PDI ≤ 1.3. The effect is that through the synergistic effect of the composite initiator, the superhydrophobic penetration of the fluorinated block, and precise molecular weight control, efficient demulsification at low temperatures is achieved, improving demulsification efficiency and reducing dosage, solving the problems of low-temperature failure and easy emulsification of traditional demulsifiers, and adapting to the low-temperature operating conditions of oil and gas gathering and transportation.

The invention discloses an edge network cloud-oriented dynamic resource scheduling method, and relates to the field of edge computing. The edge network cloud-oriented dynamic resource scheduling method comprises the following steps: S1, data acquisition; s2, constructing a multi-dimensional evaluation model; s3, hierarchical scheduling judgment; and S4, scheduling execution and dynamic adjustment. According to the dynamic resource scheduling method oriented to the edge network cloud, multi-dimensional data of edge nodes, tasks and a cloud center are collected in real time, a resource supply and demand matching degree evaluation model of dynamic weight is constructed, and scheduling is judged in a layered mode according to'edge local, edge collaboration and cloud center ', so that the one-sidedness of evaluation only through a CPU / memory in an existing scheme is fundamentally solved, and the dynamic resource scheduling efficiency is improved. The resource supply and demand matching degree evaluation error is reduced, the time delay compliance rate of the time delay sensitive task is improved, and the low-time-delay and high-precision core scheduling requirements of the edge network cloud architecture are met.

This solution discloses a portable vegetation capsule method for vegetation restoration on rocky slopes, applicable to the field of ecological restoration engineering technology. The method includes five steps: manual slope clearing, preparation of a water-collecting and water-retaining granule-sowing mixture, excavation of planting holes, planting in the vegetation capsules, and post-planting maintenance. Water-collecting and water-retaining granules, native tree, shrub, and grass seeds, and slow-release granular fertilizer are mixed in a precise ratio, filled into biodegradable vegetation capsules, and then planted manually in the gravelly soil area of ​​the rocky slope. The water-collecting and water-retaining granules expand upon contact with water, forming a sticky fibrous covering layer, which enhances seed adhesion, resists wind and rain erosion, and continuously supplies moisture. This invention is suitable for rocky slopes with a slope of ≤30°, and has the advantages of minimal slope disturbance, convenient construction, low cost, and high vegetation survival rate, effectively achieving ecological restoration and soil and water conservation on rocky slopes.

The invention relates to a light-vision integrated ship detection method, which adopts a distance separation fusion detection strategy, and adaptively selects to start a first detection module or a second detection module according to a comparison result of a distance between a target ship and a sensor and a preset distance threshold value. The problem that the detection performance of a single sensor in a specific distance range is limited is effectively solved. When the target ship is located at a close distance, performing accurate three-dimensional bounding box identification through a three-dimensional point cloud target detection algorithm by using laser radar point cloud data; when the target ship is located at a long distance, the reliable depth and distance information is obtained through the monocular depth estimation algorithm by using the 2D image data, so that the accurate perception of the ship in the full-distance range is realized on the premise of controllable cost.

The invention relates to a forest fire prediction method and system based on artificial intelligence, and belongs to the technical field of fire prediction, and the system comprises a data collection and fusion module which is used for obtaining multi-source time sequence data of a target forest, the multi-source time series data comprises meteorological data, remote sensing image data, ground sensor data, topographic data and humanistic geographic data; the forest attribute analysis module judges whether the target forest belongs to a high-human-trace activity forest or a low-human-trace activity forest through a preset classification model; the self-adaptive fire risk prediction engine is used for calculating a comprehensive fire risk index of the target forest and generating a fire occurrence probability space-time distribution diagram; and the targeted remedial measure generation module is used for generating differentiated remedial measure plans matched with the forest attributes. According to the method, the human trace activity attributes of the forest can be accurately identified, the fire risk factor weight is adaptively adjusted for forests with different attributes, and the accuracy of comprehensive fire hazard index calculation is improved.

The invention discloses a data migration method in a cloud storage system, an electronic device and a storage medium, the cloud storage system comprises a first storage device and a second storage device, the performance of the first storage device is better than that of the second storage device, and the method comprises the following steps: writing shot current picture data into the first storage device; in response to the fact that the residence duration of the current picture data in the first storage device is equal to the preset duration, migrating the current picture data from the first storage device to a second storage device; and in response to the fact that the access frequency of the current picture data in the second storage device is greater than the preset frequency, returning the current picture data from the second storage device to the first storage device. Hierarchical storage of data in the cloud storage system is realized, and resources of different storage devices are reasonably utilized.

This application relates to a processing apparatus for enhancing the corrosion resistance of brass alloys, belonging to the technical field of metal material processing. It includes a base, a melting unit, a silver storage unit, a transition unit, a forming unit, and a cooling unit. Through the cooperation of the melting unit, silver storage unit, and transition unit, this application achieves corrosion resistance of brass alloys approaching that of pure gold, provided the silver mass fraction does not exceed 35%. This significantly reduces the amount of precious metals used, achieving a balance between corrosion resistance and cost, and broadening the application range of brass alloys. Brass can be melted in the melting unit and fed into the transition molten pool through a copper conveying pipeline and a first solenoid valve. At this time, a weighing device can measure the mass of the copper material, and the mass of silver liquid to be added is calculated based on the mass of the copper material. The silver liquid is stored inside a heat-insulating tank and heated and kept warm by a heating rod. Then, the first silver conveying pipeline is activated to transport the silver liquid to a temporary storage cylinder.

The invention provides a control system for an LED all-in-one machine, and the system comprises a multimedia processing module which is used for carrying out the decoding and OSD rendering processing of a received audio and video signal; the control module is in asymmetric communication with the multimedia processing module through a UART (Universal Asynchronous Receiver / Transmitter) and controls the LED all-in-one machine to work; and the interface module is respectively connected with the multimedia processing module and the control module for signal transmission, the interface module comprises a plurality of interfaces, and the interfaces are interfaces in the consumer electronics field. According to the embodiment of the invention, the control module and the multimedia processing module are utilized in the all-in-one machine to form a dual-core heterogeneous and function decoupling co-processing architecture, so that deep binding between the control module and hardware is effectively relieved, and the balance of performance, power consumption and cost of the all-in-one machine is realized; and communication with external equipment can be realized through an interface in the consumer electronics field in the interface module, so that identification and control of the external equipment are facilitated, and the maintainability of the all-in-one machine is effectively improved.

This invention belongs to the field of coffee extract processing and purification technology, and discloses a method for inhibiting white spots in coffee concentrate. The method includes: first, diluting a pre-prepared coffee concentrate with deionized water to a soluble fixed content of 10-15°Brix and a natural pH of 5.0-5.8; then, taking a certain amount of the diluted coffee concentrate and preheating it to 40-55°C, while simultaneously adding hemicellulase, pectinase, neutral protease, and acid lipase, and performing enzymatic hydrolysis at a reaction temperature of 45-50°C for 2-3 hours, with a stirring speed of 50-80 rpm during the hydrolysis; then, raising the temperature of the hydrolyzed system to 90°C and maintaining it for 8-10 minutes to completely inactivate all enzyme activities; finally, concentrating the inactivated material at a concentration temperature ≤60°C using low-temperature vacuum to the target concentration and filling it to obtain the final product. This invention, based on existing equipment, adds a dilution step and an acid lipase to target the hydrolysis of triglycerides, while extending the hydrolysis time, effectively inhibiting the formation of white spots and doubling the shelf life.

The application provides an efficient matrix storage method and system based on wind power prediction data, and relates to the technical field of wind power data storage. The method comprises the following steps: constructing multi-dimensional time series data according to wind power prediction data of each wind turbine in a wind farm; constructing a table structure based on an array field for the multi-dimensional time series data, each row corresponding to prediction data of a prediction model of the wind turbine at a prediction release time, and each feature storing the numerical value of the corresponding feature at multiple prediction target times in the form of an array field; performing hierarchical storage management on the wind power prediction data according to the table structure, storing wind power prediction data within a first time range as hot data in a cache table in the form of an original array; and storing the remaining wind power prediction data as cold data, obtaining multiple time blocks, performing singular value decomposition on the original matrix corresponding to each time block, and compressing and storing the cold data into a cold data table. The application helps to improve data calling efficiency and reduce overall storage space occupation.

The application provides a green computing power scheduling system and method based on multi-objective optimization, relates to the technical field of green computing power scheduling, and comprises the following steps: receiving a plurality of computing tasks, obtaining task attribute information corresponding to each computing task, and the task attribute information comprising task type information; collecting GPU power and temperature data of each data center in a data center cluster, calculating the use efficiency value of each data center power supply, and obtaining the electricity price information and carbon intensity data of each period in the area covered by each data center from an application programming interface connected to the power grid; based on the task type information and the temperature data, dynamically adjusting the GPU power of each data center to obtain an adjustment result, scheduling and optimizing each computing task to obtain an optimization result, and then constructing a decision vector, and finally performing computing power scheduling through a multi-objective optimization function and an adaptive scheduling strategy, so that the application can realize green and efficient computing power scheduling.

This invention belongs to the field of flowmeter verification and calibration technology, and particularly relates to a high-precision and rapid transfer method for weighing containers during flowmeter verification and calibration. Its key feature is that, during the weighing process of flowmeter verification, after the weighing container is moved and returned to its original position, the repositioning accuracy of the weighing container on the electronic scale is controlled to be less than 1 mm. The specific operation steps are as follows: 1) Preparation stage; 2) Lifting; 3) Transfer; 4) Weighing; 5) Reset; 6) Equipment restoration, the equipment returns to the verification and calibration state. Compared with the prior art, the beneficial effects of this invention are: during the flowmeter verification and calibration process, without the aid of cranes or forklifts, the weighing container can be quickly and accurately transferred to a reasonable position; during the transfer process, the weighing container can maintain precise positioning at all times; and after the electronic scale is reset, the weighing container can be quickly placed back on the electronic scale, while reducing collisions and impacts on the electronic scale.

The invention belongs to the technical field of door and window machining, and particularly relates to a door and window driver mounting device and a working method.The door and window driver mounting device comprises a storage unit, a feeding platform, a driving unit and a driving unit, the driver mounting unit is used for grabbing the driver from the storage unit and transferring the driver to the feeding platform for mounting and fastening; the material storage unit is provided with a fixed material taking opening. The driver mounting unit comprises a clamping device and a fastening device which share an x-direction driving assembly and a Z-direction driving assembly and are independently driven in the y direction, and the driver mounting unit reciprocates between a material taking opening of the material storage unit and a workpiece mounting position of the feeding platform through the x-direction driving assembly. The clamping device grabs the driver from the material taking opening and installs the driver on the workpiece, and the fastening device executes fastening operation on the installed driver; and the control unit coordinates the action time sequence of each unit. The functions of material taking, feeding and fastening are integrated, the material storage unit and pressing are matched, and automatic driver installation starting from grabbing of a driver by a stock bin is achieved.

This application discloses a water quality monitoring system for wastewater treatment, relating to the field of wastewater treatment and monitoring technology. The system improves wastewater recovery rate by sedimentation of wastewater discharged from a wastewater treatment plant and dewatering the sedimented sludge. A purification scheme prediction model is then used to analyze and determine the optimal purification scheme for the wastewater, balancing the wastewater purification rate with reagent costs. During the purification process, the system monitors the content of dissolved impurities and the concentration of various chemical reagents in different areas of the purification tank to determine whether uniform treatment of the wastewater is necessary. Based on the properties of each chemical reagent, the system identifies the aggregation areas of each reagent, thus determining the corresponding uniform treatment method. Finally, a wastewater uniform treatment rate decision model outputs the uniform treatment rate corresponding to each chemical reagent, achieving a balance between purification effect and energy consumption cost.

The application discloses an iron-based alloy powder for laser cladding repair of key components of agricultural machinery and a cladding process thereof, and aims to solve the problems of insufficient comprehensive performance of cladding materials and lack of targeted process in the prior art. The powder contains Fe, Ni, Cr, Mo, W, Ti, WC-TiC composite ceramic particles and components such as C, Si and B in a specific mass percentage, and is prepared through accurate weighing of raw materials, argon protection ball milling, vacuum drying and secondary drying before use. The cladding process comprises pretreatment of sand blasting and anhydrous ethanol ultrasonic cleaning, cladding operation of matching personalized laser parameters according to different working conditions of wear-resistant leading type, corrosion-resistant wear-resistant type and impact-resistant wear-resistant type and controlling interlayer temperature, post-treatment of argon protection cooling in the furnace and grinding finishing. The scheme makes the cladding layer have high hardness, wear resistance, corrosion resistance and toughness, low porosity and high bonding strength, significantly prolongs the service life of the component, is controllable in cost and suitable for existing equipment, and is beneficial to large-scale popularization.