15results about How to "Guaranteed growth" patented technology

This invention discloses a LiDAR point cloud data completion system and method based on a PCN model, belonging to the field of point cloud data processing technology. It is used to complete LiDAR point cloud data with complex occlusion. The system includes a data loading module, a data processing module, a data completion module, a model training and optimization module, and a data visualization module. The method includes acquiring raw point cloud data files, reading and preprocessing multi-format point cloud files, constructing a dataset, building a point cloud data completion model based on a PCN model, training and validating the model based on the dataset, acquiring a weight file, and performing data completion on point cloud data with complex occlusion based on the weight parameters. This invention solves problems such as poor data format compatibility of existing PCN models, numerical overflow or training instability when the point cloud data coordinate range is large, and low robustness of point cloud file matching and loading, thereby improving the accuracy of sparse point cloud data completion.

The invention discloses a Ka-band broadband low-noise amplifier based on a mixed feedback mode and a design method and device thereof. The Ka-band broadband low-noise amplifier comprises an input matching network, a single-section microstrip line coupling feedback network, an inter-stage matching network, a resistance negative feedback network, a three-section microstrip line coupling feedback network and an output matching network. And an active bias network is assisted to ensure the working stability. The circuit is composed of two stages of circuits, the preceding stage circuit adopts a cascode transistor amplifier to minimize noise, and the backward stage circuit adopts a cascode structure to improve linearity and bandwidth. Simulation results show that in the frequency band of 25-40 GHz, the amplifier achieves the excellent performance that the gain is higher than 20 dB, the flatness is 0.6 dB, the noise coefficient is 1.43-1.75 dB, the output 1dB compression point is larger than 5.5 dBm, and the direct-current power consumption is only 40.6 mW. According to the low-noise amplifier, the problems of gain roll-off, high noise, limited bandwidth and the like of a traditional low-noise amplifier in broadband application are solved by innovatively combining a resistance negative feedback technology and a microstrip line coupling feedback technology.

The invention discloses an ultra-short pulse optical parametric oscillator based on a bicrystal structure, and relates to a laser and an assembly, and the oscillator comprises a first beam shaper (2) which is used for shaping idler frequency light (1); a second beam shaper (4) for shaping the pump light (3); a dichroscope (5); the first nonlinear crystal (6) is arranged on a light emitting path of the dichroscope (5), and the first nonlinear crystal (6) is used as an input coupling mirror of the optical parametric oscillator; the second nonlinear crystal (7) is arranged on a light emitting path of the first nonlinear crystal (6), and the first nonlinear crystal (6) and the second nonlinear crystal (7) form a resonant cavity; and the three-direction color mirror (9) is arranged on a light emitting path of the second nonlinear crystal (7) and is used for separating the pump light, the signal light (8) generated by nonlinear frequency conversion and the amplified idle frequency light (1) and transmitting and outputting the idle frequency light. The conversion efficiency of the optical parameter amplification process is improved, and the overall amplification performance of the optical parameter amplifier is guaranteed.

This utility model discloses a lotus planting pond, including a planting pond body and a water storage tank. Multiple partitions are fixed inside the planting pond body, each partition having a drainage structure. A water pump is installed between the planting pond body and the water storage tank to pump water from the storage tank into the planting pond body. A water outlet structure is provided on one side of the planting pond body, including outlet pipe one, outlet pipe two, and outlet pipe three. This application, through the planting pond body, partitions, drainage structure, and water outlet structure, allows for corresponding adjustments to the water level in the planting pond body at different growth stages of the lotus, ensuring optimal water levels for lotus growth during the seedling, growth, and flowering stages. This helps guarantee the survival rate and growth vigor of the lotus at different stages, resulting in better lotus growth and enhanced ornamental value.

The application provides a pickling unit automatic speed control method and system based on multi-factor constraints, and relates to the technical field of cold-rolled strip steel production. In view of the defects that the existing control relies on manual operation or primary automation and is difficult to cope with multiple constraints and instantaneous working conditions, the method comprises the following steps: constructing a multi-factor constraint model covering process, equipment, logistics, acid liquid and instantaneous working conditions; collecting corresponding data in real time; dynamically calculating a global optimal speed setting value through multi-layer decision logic, calculating a basic speed first and then superimposing an instantaneous working condition constraint, and directly triggering emergency disposal through high-priority alarm; issuing an instruction for execution and closed-loop feedback, and combining machine learning for self-learning optimization. The application realizes automatic intelligent control of the unit speed, guarantees quality and equipment safety, improves production efficiency and continuity, and reduces energy consumption cost.

The utility model relates to a kind of municipal inspection well mouth suspension formwork devices, its structure includes support frame, adjustable suspension mechanism and adjustable well mouth formwork;Adjustable well mouth formwork is enclosed into circle, adjusting hole is respectively set in the two ends of adjustable well mouth formwork, and fastening bolt is threaded in adjusting hole, the two ends of adjustable well mouth formwork are fixedly connected by fastening bolt, at least three adjustable suspension mechanisms are provided on support frame, adjustable suspension mechanism lower end is connected with adjustable well mouth formwork.It also includes two adjustable inner support rods, four insertion sleeves are provided on the inner wall of adjustable well mouth formwork, two adjustable inner support rods are cross set, the two ends of adjustable inner support rod are respectively inserted with one insertion sleeve, the inner diameter of insertion sleeve is greater than the diameter of adjustable inner support rod end portion.The utility model can effectively guarantee the structure size, position and elevation of inspection well well mouth, and can effectively improve construction quality.The utility model is simple to install, convenient to adjust, and is convenient for repeated use.

The utility model discloses a synergistic evaporative condenser which comprises a fan module, a water tank module and a coil pipe module, the coil pipe module is composed of at least one coil pipe module body which is detachably connected, and the fan module, the water tank module and the coil pipe module respectively comprise a shell. Shell ports of the fan module, the water tank module and the coil pipe module are all fastened and connected through bolts, a snakelike coil pipe is installed in a shell of the coil pipe module, a spraying pipe parallel to the snakelike coil pipe is installed at the top of the snakelike coil pipe, spraying heads are evenly installed on a pipe body of the spraying pipe, and the spraying heads are connected with the snakelike coil pipe. An inlet and an outlet of the snakelike coil pipe and an inlet of the spraying pipe extend to the outer side of a shell of the coil pipe module, the inlet and the outlet of the snakelike coil pipe and the inlet of the spraying pipe which are adjacent up and down are connected with flow dividing pipes through flanges, and production loss caused by overall shutdown is avoided through the rapid isolation function of a fault unit; and the unnecessary maintenance workload is also reduced.

The application relates to the technical field of vehicle bodies, and provides a crash beam assembly and a vehicle. The crash beam assembly of the application is suitable for being connected at the end of a vehicle body longitudinal beam, and comprises a crash beam body and energy absorption boxes arranged at the two ends of the crash beam body. The width of the middle part of the crash beam body in the up-down direction of the whole vehicle is smaller than the width of the two ends of the crash beam body in the up-down direction of the whole vehicle, the crash beam body is integrally stamped and formed, and a reinforcing rib line is arranged on the crash beam body. The reinforcing rib line extends along the length direction of the crash beam body, and the reinforcing rib line is recessed from part of the crash beam body to the side where the energy absorption box is located. The application can reduce the influence on the heat dissipation effect of the radiator of the vehicle, can increase the structural strength of the crash beam, and is beneficial to improving the overall quality of the vehicle.

This application relates to an image processing method, apparatus, and computer device. The method includes: downsampling an image to be processed to obtain a downsampled image; generating an initial illumination image based on pixel information of each pixel in the downsampled image; performing FGS filtering on the initial illumination image to obtain an intermediate illumination image; performing brightness transformation and upsampling processing on the intermediate illumination image to obtain a target illumination image of the same size as the image to be processed; and using the target illumination image to enhance the brightness of the image to be processed to obtain the target image. This method can reduce the computational load in the image enhancement process without affecting the image enhancement effect, making it suitable for computer devices with lower computing performance and expanding its applicability.

The utility model discloses an improved integral type flexible container belongs to the container transport device technical field, including bag body, bag bottom, feed port and sling, bag body, bag bottom, feed port are all integrally made into shape on a piece of cylindrical base cloth, the cylindrical base cloth is square cylindrical base cloth, and the bag body top is the feed port, and the bottom is the bag bottom of sealed suture type, the bag body on the side of feed port is provided with the integrated folding reinforcing interlayer, and the folding reinforcing interlayer is used in cooperation with the connection of sling, the sling end embeds in the folding reinforcing interlayer, and the sling end is connected by the fastening suture of multiple suture lines between the folding reinforcing interlayer, and the folding reinforcing interlayer is cut and folded by the bag body, and the folding reinforcing interlayer is at least two layers of folding. The utility model improves the structural strength of the connection of sling and bag body, effectively prevents the bag body damage in the process of hoisting, improves the bearing safety and service life of flexible container, and improves the product performance.

The embodiment of the specification provides an optical sensing system and a digital sampling signal calculation method. The system comprises a slope signal generator, a digital logic circuit and a plurality of column circuits; the slope signal generator is used to generate a slope signal and transmit the slope signal to the column circuits; the slope signal comprises a signal with gradually changing signal strength over time, and the signal strength change speed of the slope signal corresponds to the amplification multiple of a photosensitive electric signal; one of the plurality of column circuits is used to receive the photosensitive electric signal, and output a photosensitive gain signal to the digital logic circuit according to the slope signal and the photosensitive electric signal; the photosensitive gain signal comprises a digital signal corresponding to the photosensitive electric signal after signal strength amplification; and the digital logic circuit is used to calculate a digital sampling signal according to the photosensitive gain signal. The above system reduces the area overhead of the chip corresponding to the optical sensing system, and improves the application range of the corresponding optical sensing chip.

The application discloses a kind of distributed array reconstruction super degree of freedom interference null broadening method, interpolation is carried out to virtual array element to distributed array, wherein transformation region contains all signals;Solving the transformation matrix of each region;According to the transformation matrix of solving, the covariance matrix of virtual array is constructed, and color noise is removed;Solving transformation error matrix, and further solving error covariance matrix;Covariance matrix and guide vector under error constraint are constructed;Spatial spectrum function is constructed, and spatial spectrum function is carried out space domain extension using window function;Add virtual interference spectrum to the spatial spectrum function after space domain extension;Reconstruction interference noise covariance matrix;According to MNV criterion, optimization weight is calculated.The application is suitable for distributed array, reduces inherent cost, increases array system degree of freedom by virtual array element interpolation, effectively broadens null while guaranteeing main lobe gain, solves the problem that interference source deviates from preset direction of arrival, improves array anti-interference performance.

The application provides a fusion array antenna and a base station, the fusion array antenna comprising: a reflecting plate, a plurality of high-frequency arrays and a plurality of low-frequency arrays; the plurality of high-frequency arrays and the plurality of low-frequency arrays are arranged on the reflecting plate; each high-frequency array comprises a plurality of high-frequency radiation units; each low-frequency array comprises a plurality of bowl-shaped low-frequency radiation units and a plurality of cross-shaped low-frequency radiation units; and the plurality of cross-shaped low-frequency radiation units in each low-frequency array are embedded in the high-frequency array. In the fusion array antenna, the plurality of bowl-shaped low-frequency radiation units in each low-frequency array are arranged on one side of the high-frequency array, and the plurality of cross-shaped low-frequency radiation units in each low-frequency array are embedded in the high-frequency array, which is conducive to reducing the length of the antenna, reducing the coupling between the high-frequency array and the low-frequency array, and ensuring the gain of the low-frequency array and the high-frequency array after fusion.

This invention discloses an installation device for constructing multi-curved curtain walls using a unitized frame, comprising arc-shaped support beams adapted to the curvature of the multi-curved curtain wall. Multiple arc-shaped support beams intersect to form a unitized frame, and each arc-shaped support beam has multiple columns of varying heights at its base according to its curvature. This invention also discloses an installation method for constructing multi-curved curtain walls using a unitized frame. This invention solves the installation problem of spatial curved curtain walls, offering not only simple and efficient installation but also high safety, and can be widely applied in the field of multi-dimensional spatial curved curtain wall construction technology.

The invention discloses a notebook computer light sensing face recognition method. The method comprises the following steps: step 1, double-spectrum environment sensing; step 2, dynamic illumination compensation processing; step 3, extracting features in all directions; step 4, deep feature fusion; step 5, lightweight network identification; and step 6, event-driven energy efficiency management. According to the method, environmental limitation is broken through through dual-spectrum sensing and three-dimensional illumination modeling, and the recognition precision is improved by combining a dynamic compensation algorithm with harmonic analysis; the robustness of a complex scene is enhanced through deep feature fusion, the power consumption is reduced through cooperation of event-driven management and a lightweight network, the endurance is prolonged through collaborative optimization of software and hardware, the maintenance cost is reduced through modular design, and comprehensive upgrading of precision, energy efficiency and practicability is achieved.