18results about How to "Maintain precision" patented technology

This invention discloses a hardware acceleration method and accelerator for Transformer based on mixed-precision quantization and Huffman coding. The acceleration method includes: using a genetic algorithm to obtain several configuration schemes for mixed-precision quantization of Transformer network layers; performing mixed-precision quantization on each Transformer network layer based on each quantization configuration scheme to obtain a corresponding KL divergence; training a multilayer perceptron to obtain a quantization configuration prediction network using the quantization configuration scheme and the corresponding KL divergence as the output label and input feature, respectively; receiving a user-set target KL divergence value, using the quantization configuration prediction network to obtain the corresponding quantization configuration scheme, and performing mixed-precision quantization on each network layer based on the quantization scheme; and using Huffman coding to encode and compress all quantization weights before on-chip storage. This invention can reduce storage and computational overhead while maintaining model accuracy.

The invention discloses a piezoelectric film with bionic textures and a preparation method and application thereof, the piezoelectric film is formed by directionally stacking and depositing fibers with core-shell structures, the piezoelectric film has a gully-bulge alternating bionic morphology imitating human skin surface textures, and the aperture of the piezoelectric film is gradually increased from an attachment surface in the thickness direction; the fiber having the core-shell structure comprises: a core layer having a porous structure and containing modified molybdenum disulfide and polyester; the shell layer wraps the core layer, and the shell layer contains collagen; the piezoelectric film comprises a sensing unit area and a flexible connection area, the collagen crosslinking degree of the sensing unit area is larger than 75%, and the collagen crosslinking degree of the flexible connection area is 40%-55%. Under the synergistic effect of materials and structures, the piezoelectric film not only has a high piezoelectric constant, but also shows excellent mechanical properties, air permeability and moisture penetrability, and has wide application prospects in the fields of electronic skin, health monitoring and the like.

The application discloses a kind of key-driven dual-domain hybrid revocable face privacy protection method and device, method is derived from master key by key management module for different purposes Subkey, and support versioned revocation and reissue;In image domain, face image is mapped to latent space using inversion network, protected image is generated based on key hierarchical gating mixing and noise disturbance;In feature domain, revocable binary template is generated by key scrambling, orthogonal projection and grouped random threshold quantization, and correction template is obtained by lightweight error correction coding;Cross-domain alignment module ensures that image domain embedded features and feature domain templates are semantically consistent under the condition of "same person same key";Privacy level control module dynamically adjusts anonymity boundary and noise intensity to achieve multi-level protection;Process control module manages the whole process of registration, verification, revocation and reissue.The application balances identity recognition utility and privacy security, and has irreversibility, unlinkability and revocability.

The utility model relates to an air pump motor. A motor stator assembly is arranged on the outer side of a motor rotor assembly; a front-end integrated cover plate is arranged on one side of the motor stator assembly; a rear-end integrated cover plate is arranged on one side of the motor stator assembly; bearings are directly arranged in the front-end integrated cover plate and the rear-end integrated cover plate; inner rings of the bearings are fixed at two ends of the motor rotor assembly; the fixing bolts penetrate through the front-end integrated cover plate, the motor stator assembly and the rear-end integrated cover plate to be fixed, so that the problems that in an existing air pump motor, bearing sleeves are often installed in the front end cover and the rear end cover, then bearings are installed, the air pump needs to be used for a long time, and after the bearing sleeves are installed, the bearing sleeves are damaged are solved. The technical problems that bearing installation precision and positioning precision are not enough, bearing sleeves installed in a front end cover and a rear end cover are heated, bearings are finally clamped, and an air pump motor is damaged are solved.

The utility model discloses a numerical control press die storage cabinet, and relates to the technical field of cabinets. The device comprises a box body and shells with holes, the box body is provided with a mounting mechanism and a connecting mechanism, at the moment, two T-shaped shells on the left side and the right side pull two first springs on the left side and the right side respectively to deform, and at the moment, two insertion rods on the left side and two insertion rods on the right side are separated from the inner walls of the two shells with holes. Then the storage shell and the storage shell are dragged to slide up and down on the inner walls of the two shells with holes for adjustment, and after adjustment is completed, a convex shell is made to make contact with the inner wall of a limiting shell again according to the operation in the reverse direction, so that a plurality of inserting rods make contact with the inner walls of the two shells with holes to limit the storage shell and the storage shell; and then the storage shell slides to place the mold on the inner wall of the storage shell and reset, then the mold is sealed in the box body through the connecting mechanism, through the operation, the space of the storage cabinet can be flexibly adjusted according to the molds of different sizes, the space is effectively utilized, and waste of the fixed space is avoided.

The utility model belongs to the technical field of vehicle part manufacturing equipment, and discloses a rolling line continuous rolling die for automobile parts, which comprises a platform, the platform is connected with a supporting column, the platform is rotatably connected with two groups of rotating shafts I, the rotating shafts I are connected with a die body, the platform is connected with a supporting plate, and the supporting plate is connected with a plurality of groups of telescopic rods. The telescopic ends of the telescopic rods are jointly connected with a supporting frame, the telescopic rods are sleeved with springs, the two ends of the springs are connected with the supporting plate and the supporting frame respectively, the supporting frame is rotationally connected with a second rotating shaft, the supporting frame is connected with a first motor, the output end of the first motor is connected with the second rotating shaft, the second rotating shaft is connected with a transmission cylinder, and the first rotating shaft is connected with a driving device. According to the utility model, power can be provided for materials while the positions of the materials are limited, so that an operator does not need to watch a station for a long time for manual feeding, material deviation is monitored at any time, and repeated physical labor is liberated.

This invention relates to the field of casting production equipment technology, and in particular to a fully automatic casting production equipment, including a conveying base, on which multiple aluminum alloy pot bottom molds are placed, and aluminum alloy pots are placed on the aluminum alloy pot bottom molds. A baffle is slidably fitted on a gantry frame, and a guide pipe is passed through and fixedly connected to the baffle. A gate removal mechanism is slidably fitted on a fixed frame, and a collecting seat is fixedly connected to one outer wall of the baffle. After the aluminum alloy pot is poured and the upper mold is removed, the removal plate is driven by a transmission mechanism to move back and forth, replacing manual removal. This reduces the opportunity for workers to come into contact with high-temperature castings, lowering the risk of burns and other safety hazards. Automated removal reduces the time spent on manual operation, making the casting process more efficient and improving production efficiency. At the same time, under the action of the transmission gear, the distance of the removal plate's progressive descent can be adjusted to maintain the consistency and precision of removal, avoiding unevenness caused by manual operation and ensuring the quality of the castings.

The application provides a satellite vegetation index fusion method based on optimal interpolation and fast Fourier transform, comprising: obtaining a meteorological vegetation index product and a high-resolution vegetation index product; performing multi-level interpolation processing on the meteorological vegetation index product based on optimal interpolation and plane equation interpolation, taking a specified vegetation index product as a background field, to obtain a vegetation index interpolation; performing fast Fourier transform processing on the high-resolution vegetation index product to eliminate a seam area contained in the high-resolution vegetation index product, to obtain a new high-resolution vegetation index product; and fusing the vegetation index interpolation and texture features corresponding to the new high-resolution vegetation index product, to obtain a vegetation index fusion result, wherein the texture features are used to describe a vegetation index change between two adjacent pixels in the new high-resolution vegetation index product. The application can significantly improve the precision of the vegetation index fusion result in a complex terrain or a region where multiple vegetation types coexist.

This disclosure provides a dual-process RTK solution method and apparatus based on an embedded platform. The method comprises two independent solution processes: a first process and a second process. The first process performs RTK solution on N epochs of GNSS observation data to obtain fixed RTK position information, RTK velocity information, and fixed ambiguities. The second process performs solution on GNSS observation data for each subsequent epoch, achieving full-frequency solution. The first process executes 1 / M of the entire solution every 1 / M second, significantly reducing the computational load per unit time. The second process executes a complete solution every 1 / M second, extrapolating the motion state based on the fixed RTK position information and RTK velocity information obtained from the first process to obtain a priori position estimate for the current moment. Based on this, the second process performs single-point positioning and uses the fixed ambiguities from the first process for rapid fixed solution calculation, thus maintaining the accuracy and stability of high-frequency output without repeating the complete RTK process. In summary, the proposed solution improves the computation efficiency of the RTK algorithm on embedded platforms, reduces hardware costs, and meets the requirements for high-frequency computation across the entire system and frequency range.

This invention provides a SCARA robotic arm, characterized by comprising: a movable base, at least two articulated arms, and articulated motors disposed at each articulated arm; the movable base is sequentially connected to each articulated arm; each articulated motor is a planetary gear motor, and each articulated motor is rigidly directly connected to a follower structure via coaxial bearings; an end effector is mounted on the end articulated arm. This invention, by selecting an integrated articulated motor with a planetary reducer as the drive unit, enables the joint output to achieve high torque and sufficient speed without the need for external multi-stage reduction links, directly increasing the output capacity per unit volume on the drive side, thereby reducing the need for additional structural and transmission components to meet dynamic performance requirements. The rigid direct connection scheme between the articulated motor and the follower structure shortens the power transmission path, reduces backlash and flexibility introduced by components such as synchronous belts / linkage mechanisms, and lowers phase lag and energy loss.

The application discloses a lightweight optical flow neural network method for river speed measurement, comprising the following steps: collecting dynamic monitoring images of a water area surface flow field, combining a DeepFlow optical flow algorithm to calculate an approximate optical flow field and generate an optical flow label; building an improved lightweight ConvFFN-Flow optical flow estimation model, including a feature extraction module, a 4D correlation structure module, a GRU optical flow residual iteration module and an up-sampling module; by introducing the ConvFFN module, the model parameter size and the calculation amount are reduced while the optical flow prediction accuracy is maintained; based on the pixel coordinates of the front and rear two images of the optical flow field data, the corresponding positions in the real three-dimensional space are obtained, the actual displacement amount is calculated, and the real flow velocity vector size and flow direction of the water surface are derived. The method still has stable and high-precision optical flow estimation capability when processing scenes such as river water surface texture microstructure and complex flow state change, and significantly reduces the calculation cost and storage demand.

The application relates to the technical field of roll production line control, and discloses a high-speed roll changing control method and system based on tension prediction, wherein the method comprises the following steps: initializing control parameters; collecting the roll diameter of a main roll shaft and material tension in real time, and predicting a roll changing trigger time based on a roll diameter change rate; generating a prepared roll shaft acceleration curve based on an electronic cam algorithm, and calculating a tension feedforward compensation amount according to the moment of inertia and angular acceleration; outputting a speed error feedback item, a tension error feedback item and a feedforward compensation item to a servo driver after superposition; triggering a cutter and a compression roller in sequence to complete roll changing after determining a speed synchronization condition; and completing smooth transfer of tension control rights through a coordination gradual change strategy.

This invention discloses a laser cutting machine for precision workpiece machining, capable of automatically positioning the workpiece. It relates to the field of precision workpiece machining technology and includes a worktable and a positioning assembly. A support roller is rotatably connected to the center of the worktable, and a waste bin is located below the worktable. A three-axis slide module is installed at the rear of the worktable, and the output end of the three-axis slide module is connected to a laser cutting head. During positioning, the drive motor first drives the two slide blocks to move synchronously towards each other via positive and negative threaded screws. A buffer spring pushes the roller frame and its rollers to contact the workpiece. The buffer spring, with its low elastic coefficient, ensures a gentle contact force. After initial positioning, the slide blocks continue to move, compressing the buffer spring. The drive slotted plate, through rollers, drives the positioning seat and positioning plate to complete the final rigid clamping. This process of first guiding and then locking can complete high-precision automatic centering within seconds, resulting in high positioning accuracy.

The utility model discloses a stamping and slitting die for a milled scalpel head, and relates to the technical field of stamping and slitting devices.The stamping and slitting die for the milled scalpel head comprises a first stamping and shearing die, a limiting groove is formed in the first stamping and shearing die, and a plurality of first stamping blocks are evenly arranged in the limiting groove in the length direction in an array mode; the slitting seat is detachably connected with the first punching and shearing die, a plurality of slitting openings are evenly formed in the slitting seat, a plurality of surgical knife heads to be slit are arranged on the slitting seat, and the surgical knife heads correspond to the slitting openings one to one; and a plurality of second punching blocks are evenly arranged on one side of the second punching and shearing die, the second punching blocks can penetrate through the cutting openings, punching grooves are formed in the second punching blocks, and one ends of the first punching blocks can block the punching grooves. By the adoption of the technical scheme, slitting of the multiple scalpel heads is achieved through stamping, and then the quality of the slitting faces of the adjacent scalpel heads is improved.

This invention discloses an AI-based traffic anomaly event recognition method based on a high-altitude perspective of unmanned aerial vehicles (UAVs), specifically in the field of traffic management. It addresses the challenge of identifying anomalies caused by parallax distortion in high-speed cruising scenarios by optimizing parallax distortion through continuous frame motion intensity baseline-driven flight control and zoom coordination; stabilizing target contours using a dynamic imaging window; constructing a sparse confidence kernel to analyze multi-dimensional motion; adaptively filtering low-quality candidates and refining anomaly coordinates; dynamically adjusting flight attitude and framing parameters according to the weight of anomaly-dense areas to achieve both high-altitude wide-angle coverage and fine-grained single-vehicle monitoring; eliminating parallax artifacts through confidence analysis; generating coordinates after anomaly candidate verification and driving flight control fine-tuning; and collaboratively compressing sensor bandwidth and improving alarm confidence across processing links to shorten the decision chain latency of detection, location, and tracking. This ensures coordinate accuracy and timely delivery under complex lighting and severe parallax conditions, providing reliable intelligent perception capabilities for traffic management.

The utility model relates to the technical field of monitoring devices, in particular to a visual coal flow monitoring device of an underground belt conveyor. According to the technical scheme, the device comprises a chassis, a main body column, a high-definition camera and a connector, a hydraulic vibration reduction structure is arranged between the bottom end of the connector and the upper surface of the chassis, and an air bag vibration reduction structure is arranged between the outer ring face of the connector and the upper surface of the chassis; the hydraulic vibration reduction structure and the air bag vibration reduction structure are used for absorbing the vibration action of the chassis to the connector, a main body column is arranged at the top end of the connector in a threaded mode, the high-definition camera is arranged at the top end of the main body column through a reversing structure, and the reversing structure is used for changing the shooting direction of the high-definition camera. According to the utility model, interference from underground ground vibration can be effectively eliminated, and an omnibearing damping effect can be provided, so that stable operation of the high-definition camera in a complex environment is ensured, image blurring or deviation caused by vibration is prevented, and the accuracy and stability of monitoring data are improved.

The invention discloses a circuit board automatic analysis and intelligent quotation system based on artificial intelligence, relates to the technical field of electronic manufacturing information processing, and is used for solving the problem of insufficient automation of circuit board quotation. According to the method, unified geometric topology representation containing geometric coordinates and layer attributes is constructed, clustering division is performed on a board based on the representation, an artificial intelligence model is utilized to identify functional areas such as high-density bonding pads, and the routing density, line width, line distance and via hole distribution of each area are calculated. Generating a complexity characteristic spectrum by combining the number of layers of the whole board and the total number of drilled holes, then determining candidate process paths according to the complexity characteristic spectrum and a process route library, calculating process complexity indexes according to drilling, pressing, impedance adjustment and testing processes, forming a quotation parameter vector containing a comprehensive complexity level and a key process load, and determining the process complexity according to the quotation parameter vector. And a material price factor and an equipment load factor are combined to be input into a quotation decision model for model updating, so that automatic generation and self-adaptive optimization of the circuit board quotation are realized.

The utility model relates to an automatic nail feeding mechanism, including nail feeding head, the nail guide strip of shape and the nail shape matching and the nail pushing device, the nail guide strip is metal nail guide strip, and the nail guide strip is used for the nail row to place and slide, the nail feeding head is used for limiting the nail row every time the number of nail feeding, the front end of nail guide strip connects the nail feeding head, the nail pushing device includes the coil spring subassembly and is used for pushing the nail row to move the nail pushing paw, the upper portion of nail pushing paw stretches out to the direction of the nail guide strip for contacting the nail row, the coil spring subassembly and nail pushing paw are connected, and the coil spring subassembly constitutes the motive source of nail pushing paw. Adopt metal nail guide strip to replace traditional plastic guide strip, significantly improve the smoothness of the nail row in the sliding process, reduce the risk of jam and accumulation, thereby improve the nail feeding efficiency and operation continuity, metal nail guide strip has higher wear resistance and scratch resistance, can still keep the precision and stability in long time, large quantities of nailing operation, greatly prolong the service life.