643results about How to "Achieve lightweight" patented technology

The invention discloses a classroom teaching quality auxiliary evaluation method, device and system based on cloud edge collaboration, and the method comprises the steps: obtaining video image data, collected by a camera, of students in a classroom in real time, and transmitting the video image data to an edge device; and in the edge device, performing student classroom behavior identification and tracking on the received video image data by using a pre-trained student classroom behavior identification model, and fusing the identification results of adjacent multiple frames with the identification result of the current frame in the tracking process to obtain the final identification result of the current frame. Evaluating the classroom teaching quality according to the student classroom behavior recognition result, wherein the student classroom behavior recognition model is obtained by training based on a multi-label target detection algorithm and by adopting a knowledge distillation structure in advance; and sending a student classroom behavior identification result and an evaluation result to a cloud video server for storage. The method has the advantages of being simple in implementation method, low in cost, high in real-time performance and precision, high in robustness and the like.

The invention relates to a humanoid robot lower limb structure and a robot. The lower limb structure comprises a hip unit, a thigh unit, a shank unit and a foot unit. The hip unit comprises a hip seat body, a first joint structure, a thigh swing drive, a thigh rotation drive and a thigh side-sway drive; the first joint structure comprises a first movable seat and a second movable seat; the thigh swing drive is mounted on the inner side of the hip seat body, and an output rotating shaft of the thigh swing drive is connected with the first movable seat; the thigh rotation drive is fixedly connected with the second movable seat, and an output rotating shaft of the thigh rotation drive is connected with the upper end of the thigh unit; the thigh side-sway drive is fixedly connected with the first movable seat, and an output rotating shaft of the thigh side-sway drive is connected with the second movable seat; the axial direction of a rotating shaft driven by thigh swing is parallel to the first direction; the axial direction of a rotating shaft of the thigh side-sway drive is perpendicular to the first direction; the axial direction of the rotating shaft of the thigh rotation drive is perpendicular to the first direction and the axial direction of the rotating shaft of the thigh side-sway drive.

The invention discloses a self-adaptive pruning method based on priority experience playback. The method comprises the steps of training a to-be-pruned image classification model, converting a pruning process of a neural network into a Markov decision process, and designing a corresponding state space, an action space and a reward function; constructing and initializing a value network, a strategy network, a target value network and a target strategy network of a depth deterministic strategy gradient algorithm; pruning the to-be-pruned image classification model; storing the pruning process of the to-be-pruned image classification model into an experience playback pool, and setting a priority for the pruning process; updating the sampling probability of each sample according to the time difference error; updating the value network and the strategy network, updating the target value network and the target strategy network, and carrying out loop training until a set maximum number of iterations is reached; and carrying out fine tuning on the image classification model to be pruned of image classification. According to the method, the pruning proportion of each layer of the network can be adaptively generated, and adaptive compression of the network to-be-pruned image classification model is realized.

The invention provides a battery pack mounting structure for a vehicle, which comprises a first battery mounting unit, and the first battery mounting unit comprises a first square frame, a second square frame and a third square frame which are sequentially arranged at intervals in the direction of a longitudinal beam; the first longitudinal supporting rod and the second longitudinal supporting rod are arranged in parallel; the third longitudinal supporting rod and the fourth longitudinal supporting rod are arranged in parallel; a first guard plate bracket; a first vertical rod, a second vertical rod, a third vertical rod and a fourth vertical rod; a plurality of rubber bushings or elastic connectors; a plurality of mounting brackets; the first connecting pieces are arranged on the first square frame, the second square frame and the third square frame; and the second connecting pieces are arranged on the first square frame, the second square frame and the third square frame. The first battery installation unit and the battery pack can be pre-installed in a factory, the first battery installation unit and the battery pack can be connected to the installation support on the longitudinal beam only through a rubber bushing or an elastic connecting piece on site, the length is adjustable, light weight is achieved, and the invention further provides an installation method of the battery pack for the vehicle.

The invention relates to a method and system for detecting a target grabbed by a mechanical arm, and the method comprises the steps: collecting a target material image, and obtaining an initial data set; preprocessing the initial data set by adopting a data enhancement mode to obtain a target data set; taking the generative residual convolutional neural network model as a reference model to construct an improved generative residual convolutional neural network model as a mechanical arm grabbing target detection network model; calculating each output loss and total loss by using an improved loss calculation method, obtaining a difference between the output loss and the total loss and practical feasible capture information, and obtaining a training weight; and updating the weight of the model by using a loss calculation result to obtain an optimal training weight, and inputting a test set into the trained mechanical arm grabbing target detection network model to obtain a mechanical arm grabbing target detection result. According to the improved mechanical arm grabbing target detection network model, the grabbing target detection precision is improved, and the grabbing target detection speed is increased.

The invention relates to the technical field of multi-unmanned-aerial-vehicle cooperative operation and three-dimensional modeling, in particular to a multi-unmanned-aerial-vehicle cooperative three-dimensional rapid modeling method for a highway accident scene, and the method comprises the steps: generating a three-dimensional grid map of an accident area through the scanning of a millimeter-wave radar by a main control unmanned aerial vehicle; subareas are divided according to a load balancing strategy and are distributed to slave unmanned aerial vehicles, the slave unmanned aerial vehicles traverse grids along a snake-shaped track, laser radar point clouds and five-view-angle images are synchronously collected, data are bound through double time stamps and space coordinates, the point clouds are preprocessed through edge computing nodes, and the point clouds are stored in a database; the master control unmanned aerial vehicle evaluates quality based on density standard deviation and overlapping matching degree and instructs to reacquire, performs high-precision Poisson reconstruction on an accident core area, performs voxelization processing on a peripheral area, maps image textures, optimizes vehicle deformation details, simplifies a model and retains key element precision, and finally performs data processing. License plate coordinates, a scattered object thermodynamic diagram and an emergency lane occupation state are automatically marked, a visual model is generated, and rapid and accurate restoration of an accident scene is realized.

The invention discloses an automatic driving vehicle target detection system and method based on cloud edge collaboration, and relates to the technical field of computer vision and artificial intelligence. According to the target detection model YOLO-Vehile provided by the invention, effective integration of text semantic information and visual features is realized through a CLIP-ViT text feature extractor and a YOLOV8 image feature extractor, and the understanding ability of the model for complex traffic scenes is remarkably improved. According to the target detection model YOLO-Vehile, high detection precision is maintained, meanwhile, light weight of the model is achieved, possibility is provided for deployment of the model on edge equipment with limited resources, and the problem that an existing large model is difficult to deploy rapidly in an actual scene is effectively solved. Through cooperative work of the edge server and the cloud server, flexible scheduling of computing resources and dynamic allocation of tasks are realized. The problem that an existing single calculation mode is unbalanced in calculation resource distribution in the face of complex and changeable traffic scenes is effectively solved, and the overall performance and reliability of the system are remarkably improved.

The invention provides an omni-directional all-drive robot trajectory tracking method based on constraint simplification, and belongs to the technical field of ground wheel type mobile robot trajectory tracking. According to the method, a robot kinematic model is established on the basis of rigid body dynamics, the transformation relation between each set of wheel speed vectors and robot speed information in a world coordinate system is represented, and multiple sets of hard constraint problems caused by motor physical characteristics are converted into soft constraint or unconstrained problems in a target function. And the program running speed and the solving success rate are improved. In addition, tracking errors caused by mechanical friction and noise interference are compensated for on the control outermost ring based on high-frequency speedometer information, and it is ensured that the robot accurately executes according to a control instruction. Through experimental verification, the solving speed of each frame of the method is within 50ms, and the tracking error evaluation of a reference trajectory is controlled within 5cm.

The invention belongs to the technical field of coal mine safety monitoring, and relates to a digital twinning efficient virtual-real synchronization method of inter-face coal pillar digging and supporting integrated equipment. Comprising the following steps: step 1, lightening a digital twin three-dimensional model of the equipment; 2, establishing an equipment digital twin motion behavior model; step 3, establishing an equipment trajectory prediction model: predicting the twinborn body posture of the tunneling and supporting equipment based on Self-Attention-LSTM (Long Short Term Memory); step 4, establishing a virtual space equipment driving and correction model, and a digital twin platform dynamic updating method based on pose correction of a quadratic spline interpolation method and state synchronization; and 5, associating the models to establish virtual-real synchronous interaction of the digital twin tunneling and supporting equipment. The method combines compressed twinning three-dimensional model data and a trajectory prediction model to reduce the driving data volume required by a digital twinning system, more efficiently drives the movement of virtual space equipment, can stably work under the conditions that sensing data is difficult to obtain and data communication is limited, and has higher reliability and practicability.

The utility model discloses an actuating mechanism used for a motorcycle engine and the motorcycle engine, the actuating mechanism comprises a driving assembly, an output shaft assembly, a transmission assembly located between the driving assembly and the output shaft assembly, a shell and a shell cover, the driving assembly is fixed on the shell cover, the output shaft assembly is fixed on the shell, and the transmission assembly is fixed on the shell cover. The transmission assembly is located in a cavity formed by the shell and the shell cover. The driving assembly comprises a first motor and a second motor, and the output ends of the first motor and the second motor are both connected with the transmission assembly. Compared with an electric control hydraulic mechanism, the actuating mechanism cancels a compression pump or a hydraulic pump in the electric control hydraulic mechanism, so that the whole system is simpler in structure. Meanwhile, the motor is small in structure and convenient to arrange, and the overall weight of the executing mechanism is reduced. In addition, the response speed is far higher than the transfer speed of the liquid medium, and the action accuracy of the executing mechanism is also improved. And the motor is not highly dependent on the environment, so that the adaptability and reliability of the whole system to the environment are enhanced.

According to the method, a VanilaNet network structure in the field of computer vision is used for reference and improved and then is applied to the gesture recognition problem based on electromyographic signal processing, and the VanilaNet network is difficult to be directly applied to electromyographic signal processing in consideration of the difference of image signals and electromyographic signals in data dimension and feature complexity, so that the recognition accuracy is improved. According to the invention, the VanilaNet network structure is improved in terms of data input and structure simplification, so that the VanilaNet network structure can be applied to electromyographic signals. And finally, under the condition that the recognition precision is ensured, model lightweight can be realized. Furthermore, in the data preprocessing stage, the mode decomposition mode and the data multi-domain fusion are improved, the problem of mode aliasing is avoided, the accuracy is further improved, and the robustness is improved; meanwhile, in the real-time control process, a data caching method is further designed to solve the delay phenomenon caused by the intelligent bionic hand device.

The invention relates to the technical field of aerospace propulsion, in particular to an ion rocket engine topological structure based on a carbon fiber composite material, which comprises a grid shell, a discharge shell, a gas circuit shell, a cover plate, a discharge cylinder and a neutralizer outer cover, wherein the grid shell, the discharge shell, the gas circuit shell, the cover plate, the discharge cylinder and the neutralizer outer cover are all prepared based on a carbon fiber composite material; the grid shell is fixedly connected with the front end of the discharge shell; the rear end of the discharge shell is fixedly connected with the front end of the gas circuit shell; the cover plate is fixed at the rear end of the gas circuit shell; the discharge cylinder is arranged in the discharge shell; and the neutralizer outer cover is fixed on the side surface of the discharge shell. The outstanding advantages of good mechanical property, excellent conductivity, small expansion coefficient and low density of the carbon fiber composite material are fully utilized, and the technical problems of high-temperature working reliability, performance level satisfaction and stability of the medium-high power ion rocket engine are solved.

The invention relates to the technical field of cable manufacturing, in particular to a superconducting coaxial cable for a quantum computer and a manufacturing method thereof, and the method comprises the steps: coating an inner conductor with an inner insulating layer to form an inner conductor layer, and electroplating a niobium compound coating on the inner wall of a stainless steel tube to form an outer conductor; forming a cable conductive layer; acquiring an advancing speed change curve of a single inner conductor layer; determining a first velocity mutation type and a second velocity mutation type; determining the vertical stirring speed of the electroplating stirring rod at the position of the outer conductor; electroplating the inner wall of the stainless steel pipe; according to the friction degree of the inner conductor layer and the outer conductor, determining an inner conductor motion adjusting mode, including adjusting the moving speed of the inner conductor layer in the outer conductor, or determining the initial rotating speed of the inner conductor layer when the outer conductor starts to pull a wire; and performing wire drawing on the sleeved outer conductor to form the cable. According to the invention, the stability of cable assembly is improved.

The invention relates to the field of metal material casting, and discloses a production method of green sand as-cast high-plasticity nodular cast iron QT800-5, which comprises the following steps: preparing pig iron, waste steel and foundry returns, and using auxiliary materials such as a silicon carbide pretreating agent, a high-temperature graphitization carburant, a rare earth magnesium silicon iron nodulizing agent, a silicon barium nucleating agent and a silicon strontium nucleating agent to prepare the green sand as-cast high-plasticity nodular cast iron QT800-5. The purity and component stability of molten iron are ensured; in the smelting process, purification and adjustment are carried out through temperature control and segmented addition of auxiliary materials, then spheroidizing is carried out through a pouring method, and the microscopic structure of a casting is optimized through ladle-to-ladle inoculation and stream inoculation; the final casting has excellent mechanical properties including the tensile strength larger than or equal to 800 MPa, the yield strength larger than or equal to 480 MPa, the elongation larger than or equal to 5% and the matrix pearlite content larger than or equal to 80%. The production process disclosed by the invention is simplified, is suitable for large-scale industrial production, and has a wide application prospect in lightweight application requiring high-strength and high-plasticity materials.

The invention relates to a semi-supervised underwater sound event detection method based on joint disturbance consistency constraint. The method comprises the following steps: acquiring logarithmic Mel spectrums of strong label audio data, weak label audio data and unlabeled audio data; performing weak enhancement and strong enhancement processing on the logarithmic Mel spectrum of the unlabeled audio data to obtain a corresponding enhanced spectrum; constructing a deep learning network model, and performing supervised training by using the frequency spectrums of the strong label audio data and the weak label audio data; adopting a multi-feature disturbance and strong disturbance combined semi-supervised model for the unlabeled audio data; and finally, optimizing the training process of the deep learning network model by calculating a joint loss function. And detecting an underwater sound event by using the trained deep learning network model, and outputting an event category of the audio data. The method is used for realizing effective detection of the sound event by using a small amount of strong injection data and improving the model performance.

The invention provides a design method of a variable-size variable-density lattice structure wing with optimized heat dissipation load, and relates to the technical field of aerospace engineering, and the design method comprises the following steps: S10: carrying out variable cross-section design on a D-type unit to obtain a variable cross-section D-type unit, taking the variable cross-section D-type unit as a lattice unit configuration, and filling the wing to form a skin lattice structure; the skin lattice structure of the wing comprises a skin and a lattice filling area; s20, cell element variable-size design is adopted for the dot matrix units, and variable-size dot matrix units are constructed; s30, according to the stress field of the wing, cell element variable-density design is adopted for the variable-size dot matrix units, and variable-size variable-density dot matrix units are constructed; and S40, establishing a wing configuration. The variable-cross-section D-type unit is used as a dot matrix unit configuration, deep coupling of integrated design of heat dissipation and bearing performance is achieved through variable-size and variable-density design, application scenes are flexibly adjusted, and complex working condition requirements are met.

The utility model relates to the technical field of optoelectronics, in particular to a small photoelectric pod device based on the optical super-resolution technology, which comprises an azimuth base, a pitching frame and a photoelectric mechanism, the pitching frame is arranged on the surface of the bottom end of the azimuth base, and the photoelectric mechanism is arranged on the inner side of the middle of the surface of one side of the pitching frame. According to the device, the nacelle supports seamless switching between daytime work and night work through three kinds of photoelectric equipment, images can be collected remotely, interest point targets can be positioned, and visible light and infrared videos can be output in real time through full-high-definition videos; and unnecessary weight is reduced while strength is guaranteed, so that the pod is smaller in size and lighter in weight compared with products of the same type, light weight is achieved to the maximum extent under the condition that three kinds of optical equipment are carried, the discovery and recognition accuracy of a time-sensitive target can be improved, cost is reduced, and the pod is suitable for popularization and application. And a certain help is also provided for reducing the overall weight.

The utility model discloses a steel platform construction device for high-altitude medium-and-small-span suspended structure construction. The steel platform construction device comprises a steel platform body structure system, a connecting system, a lower supporting system and a dismounting system. The steel platform main body structure system is composed of I-shaped steel girders and channel steel coupling beams, the channel steel coupling beams are placed on the I-shaped steel girders after the I-shaped steel girders are arranged according to a certain interval, and the I-shaped steel girders are fixedly connected into a whole through welding; according to the system, an I-shaped steel main beam is flatly placed on a floor structure, the two ends of the I-shaped steel main beam are connected through U-shaped rings, or the I-shaped steel main beam is connected with the outer side of a cavity edge beam and a column through friction type high-strength bolts; the lower support system is an inclined lower support arranged on each of the two sides of the I-shaped steel main beam; the dismounting system is composed of a guide rail frame, rolling bodies and movable and fixed pulley blocks. According to the utility model, the construction of high-altitude holes, corridors and the like with the span within 10m can be solved.

The invention discloses a set top box, a cable television system, a data transmission method and a storage medium, and relates to the technical field of data transmission. The set top box comprises a universal multimedia interface circuit and a processor, the multimedia interface circuit comprises a universal multimedia interface chip and a peripheral circuit; the universal multimedia interface circuit is connected with the processor; the universal multimedia interface chip is connected with a universal multimedia interface chip of a television; the universal multimedia interface chip is used for decomposing a signal sent by the universal multimedia interface chip of the television and forwarding the decomposed signal to the processor; the signals comprise remote control signals and network data; the universal multimedia interface chip is used for acquiring the voltage transmitted by the television; the processor is used for data processing. The requirement of ultrahigh-definition video transmission for high bandwidth can be effectively met, the number of interfaces can be reduced, the cost can be reduced, and light weight of equipment can be realized.

The invention discloses an electric vehicle thermal management system which comprises a refrigerant management module, a passenger compartment thermal management module, a battery pack thermal management module, an electric drive thermal management module and a low-temperature radiator module, wherein the passenger compartment thermal management module, the battery pack thermal management module, the electric drive thermal management module and the low-temperature radiator module are communicated with a twelve-way valve. The refrigerant management module is provided with a hot gas bypass branch, the hot gas bypass branch is provided with an electromagnetic valve with the opening degree capable of being controlled, and connection or disconnection between the refrigerant module and the passenger compartment heat management module, the battery pack heat management module, the electric drive heat management module and the low-temperature radiator module and the working mode of the refrigerant management module are completed by combining a twelve-way valve. High integration of an electric automobile heat management system can be achieved, normal work of a heat pump under the extremely low temperature working condition is guaranteed, the heating capacity is improved, and the problem that a compressor is frequently started and stopped during refrigeration is solved. The invention further provides a control method of the electric vehicle thermal management system.

The invention relates to a hub motor driving and braking integrated system with a built-in speed reducer and a control method, and belongs to the technical field of electric vehicle braking, the system comprises a motor, a planetary gear speed reducer and a brake, the planetary gear speed reducer comprises a sun gear, a gear, a planet carrier plate and a planet shaft, the sun gear and the gear are integrally formed, the sun gear is of a hollow structure, the sun gear is connected to the motor through a spline, the planet shaft and a wheel bolt are arranged in a staggered mode, and the planet carrier plate is fixedly connected to a wheel bolt fixing plate. The technical problems that in the prior art, a hub motor with a built-in speed reducer is low in internal space utilization rate, poor in heat dissipation effect and large in noise due to insufficient structures and strategies are solved.

The invention belongs to the technical field of design and preparation of copper alloy materials, particularly relates to a lightweight cupronickel material and a preparation method thereof, and designs and prepares cupronickel of a new alloy system, namely the lightweight cupronickel material. The density of the light cupronickel material is 6.08 g / cm < 3 >-6.20 g / cm < 3 >, and compared with existing copper-nickel alloy cupronickel, the density is reduced by 31.5%, so that the mass of the cupronickel material with the same volume is reduced by about 1 / 3, and the light weight of the cupronickel material is achieved. The light cupronickel material can be provided for the fields of aviation, spaceflight, weapons and new energy vehicles, the specific gravity of cupronickel parts is effectively reduced, and the light weight of the cupronickel parts is achieved.

The invention relates to the technical field of electric vehicles, in particular to an electric commercial vehicle with a battery pack framework, which comprises a cab and a chassis, the chassis is provided with the battery pack framework, and a battery pack is assembled in the battery pack framework; the battery pack frame is defined by a first cross beam assembly, a second cross beam assembly, a middle longitudinal beam assembly, a left guardrail assembly, a right guardrail assembly, a front baffle assembly, a rear baffle assembly and a reinforcing rod assembly, the battery pack frame is divided into two square battery pack mounting chambers by the middle longitudinal beam assembly, and each battery pack mounting chamber is internally provided with at least one battery pack; the middle longitudinal beam assembly is provided with a plurality of inner supports, the left guardrail assembly and the right guardrail assembly are respectively provided with a plurality of outer supports, and the battery pack is jointly fixed by the inner supports and the outer supports. The battery pack frame is not only a battery pack mounting structure, but also a vehicle body and chassis part mounting and fixing structure, the chassis structure is optimized, the chassis weight is greatly reduced, and light weight is achieved.

The utility model discloses a sound-absorbing, heat-insulating and corrosion-resistant composite board which comprises a supporting layer, and a bonding layer, a fiber reinforcing layer and a gel coat layer which are sequentially arranged on one side or two sides of the supporting layer, the supporting layer is configured to be of a columnar structure or a plate-shaped structure or a hollowed-out plate-shaped structure or a honeycomb-shaped structure. The thickness of the bonding layer is 0.01 to 2.0 mm; the thickness of the fiber reinforced layer is 0.4 to 3.0 mm; and the thickness of the gel coat layer is 0.05 to 2.5 mm. According to the technical scheme, the structural strength and the heat insulation performance of the composite board can be effectively improved by adopting the fiber reinforcement layer, and the corrosion resistance of the composite board can be improved by adopting the gel coat layer. The supporting layer structure arranged in a column shape or a hollow plate shape reduces the weight of the composite board while playing a supporting role, light weight is achieved, and meanwhile the internal space gap can also play a good noise reduction role.

The invention provides a spoke and a wheel, the spoke comprises a hub mounting part, a rim mounting part and a transition part, the transition part comprises a transition part body and at least one reinforcing rib, the transition part body is connected between the hub mounting part and the rim mounting part, at least one air hole is formed in the transition part body, and the reinforcing rib is arranged between the hub mounting part and the rim mounting part. A reinforcing rib is formed at the edge of at least one air hole and comprises a basic reinforcing rib, a first reinforcing part and a second reinforcing part, the basic reinforcing rib surrounds the corresponding air hole, the first reinforcing part is located on the side, close to the second end of the transition part body, of the corresponding air hole, and the second reinforcing part is located on the side, close to the second end of the transition part body, of the corresponding air hole. The second reinforcing part is located on the side, close to the first end of the transition part body, of the corresponding air hole, the first reinforcing part and the second reinforcing part form an integrated structure, and one of the first reinforcing part and the second reinforcing part is turned outwards to the outer side of the transition part body. And the other one of the first reinforcing part and the second reinforcing part is turned inwards to the inner side of the transition part body.

The utility model provides a lamp holder light reflecting structure and a lamp. A pull aluminum profile of the device comprises a lamp plate clamping groove for clamping a light emitting unit, a light guide clamping groove for clamping a light guide plate, a radian shaping section for clamping a light reflecting plate and a second light reflecting clamping groove, the radian shaping section and the second light reflecting clamping groove are oppositely arranged at an angle, and the radian shaping section comprises a radian shaping section; when the reflecting plate is clamped and fixed in the radian shaping section and the second reflecting clamping groove, the overall radian is shaped through the arc-shaped shaping section. The lamp panel clamping groove, the light guide clamping groove and the light reflection clamping groove are integrally formed in the drawn aluminum profile, the core components of the lamp panel, the light reflection panel and the light guide plate are all integrated on the drawn aluminum profile made of the metal material, the working performance of the core components of the lamp is guaranteed, only two ends of the light reflection panel are clamped in the clamping grooves, and the bent appearance of the light reflection panel is limited by only one radian shaping section. The structure is simplified, the using amount of aluminum materials is reduced as much as possible, and light weight of the lamp is achieved to the maximum extent.

The invention discloses a night-daytime image conversion method based on a lightweight cyclic generative adversarial network, and relates to the field of image conversion and model compression, and the method comprises the following steps: selecting image data from a night data set and a daytime data set, combining a joint loss function, and generating a final network model for converting night and daytime images; a shared attention module is introduced into the generated final network model, and a shared attention cyclic adversarial generative network model used for night-to-day image conversion is constructed; compressing the shared attention cycle adversarial generative network model by introducing a knowledge distillation algorithm to obtain a teacher generator model, and transmitting knowledge to a student generator model through the teacher generator model; and performing up-sampling reduction on the feature map in the student generator model through a decoder to obtain an image after conversion from night to day. The problems of image color distortion, blurred target details and the like are effectively relieved.

The utility model relates to the technical field of automobile doors, in particular to an automobile door which comprises an automobile door inner plate, an automobile door outer plate, an inner frame and a window frame reinforcing piece, the automobile door inner plate is made of sheet molding compound, the automobile door outer plate is made of high-molecular compound, and the window frame reinforcing piece is fixed to an upper window frame area of the automobile door inner plate in an adhesive mode. Reinforcing ribs are formed in a lower main body area of the automobile door inner plate, and the inner frame and the automobile door outer plate are sequentially bonded and fixed to the lower main body area from inside to outside. The inner frame comprises a U-shaped beam, a main cross beam and a vehicle door anti-collision beam, the two ends of the main cross beam are welded to the two free ends of the U-shaped beam respectively, and the vehicle door anti-collision beam is obliquely connected to the U-shaped beam in a threaded mode relative to the upper cross beam. A sandwich-like structure is adopted, the inner frame serves as a bearing part of the whole automobile door, the rigidity is good, more energy can be absorbed for side collision, and the automobile door inner plate and the automobile door outer plate are made of composite materials so that the automobile door can be well lightened.

The invention relates to the technical field of soft robot polymers, in particular to a preparation method of a temperature stimulation deformation reversible response soft robot polymer. Comprising the following steps: firstly, carrying out solution blending polymerization on linear semi-crystalline high-molecular polyethylene vinyl acetate and a peroxide initiator benzoyl peroxide to serve as a soft robot polymer matrix; a particle leaching method is used for making pores in a polymer semi-crystalline system, and the particle size parameter of a pore-foaming agent is adjusted to design the structural characteristics and pore morphology of a three-dimensional pore channel; finally, the linear molecules are subjected to mutual bonding bridging reaction to form the soft robot polymer with an entangled network cross-linked network and crystallization network structure. The soft polymer is prepared by constructing, regulating and controlling the three-dimensional porous structure, and the complex pore stress distribution of the porous structure aims at realizing high driving strain, so that the driving strain of the deformable soft intelligent porous driving material is regulated and improved, and adjustable driving performance and driving multifunctionalization are realized.

The invention relates to the technical field of new energy, and discloses a battery and a battery pack, the battery comprises: a shell, the shell contains a Ti element, and the mass of the Ti element accounts for more than or equal to 60% of the total mass of the shell; the pole column is arranged on the shell; the battery cell comprises a battery cell body and tabs, the tabs comprise a positive tab and a negative tab, one of the positive tab and the negative tab is electrically connected with the pole, and the other one of the positive tab and the negative tab is electrically connected with the shell; the ratio of the mass of the Ti element of the shell to the total mass of the shell is a, the conductivity of the shell is b, and the lead-out size of the tab from the cell body is c; a. C / b is greater than or equal to 99 and less than or equal to 3650. According to the battery provided by the invention, the relationship among a, b and c is comprehensively controlled, so that the light weight of the shell is realized, the over-current capability of the battery can be met, the battery is prevented from generating relatively large temperature rise, and the condition that the safety performance of the battery is poor is prevented.