5results about How to "Consider complexity" patented technology

The application provides a construction worker unsafe behavior intelligent identification method and early warning system, the method comprises the following steps: obtaining a to-be-detected image of a construction site; inputting the to-be-detected image into a construction worker unsafe behavior identification model to obtain an unsafe behavior identification result of a construction worker; wherein the unsafe behavior at least includes an unworn state, a wrong wearing state or a blocked state of personal protective equipment; and the construction worker unsafe behavior identification model is a neural network model for target detection. The detection accuracy is significantly improved, and the fine-grained identification capability is enhanced. Since a learnable position coding component is introduced into the backbone network, the model can explicitly model the spatial position relationship of the feature map, enhance the spatial position perception capability of the personnel (especially small targets and blocked targets) in the construction scene under complex background interference, solve the problem that the traditional convolutional network is not sensitive to absolute position information, and improve the feature extraction accuracy in a complex background.

The invention provides a CORDIC accelerator system and method for scaling factor compensation, and the system comprises an angle preprocessing module, an angle decoder module and a four-stage pipeline calculation module, and the angle preprocessing module maps an input angle Zin to a first angle interval, generating a corresponding reference angle selection signal, an initial angle and symbol information at the same time; the angle decoder module is connected with the output end of the angle preprocessing module and converts a reference angle selection signal into an initial horizontal coordinate and an initial vertical coordinate; and the four-stage assembly line calculation module is connected with the output end of the angle decoder module and the output end of the angle preprocessing module, performs four-stage iterative calculation based on 2 power series approximation according to the initial horizontal coordinate, the initial vertical coordinate, the initial angle and the symbol information, and outputs a final horizontal coordinate and a final vertical coordinate. According to the system and the application method thereof, the hardware resource consumption is reduced, and the calculation speed is greatly improved.

The application belongs to the technical field of phased array antennas, and particularly relates to a 128-beam phased array based on 16 / 32 subarray division. The phased array is composed of a large-scale antenna array, a reconfigurable subarray division network, a subarray-level processing unit, a global beam synthesis unit, a beam control unit and a calibration unit. The subarray division network supports dynamic configuration of the antenna array into 16 or 32 subarrays, the subarray-level processing unit performs digital beam forming on the signals of each subarray to generate subarray-level beams, the global beam synthesis unit performs secondary synthesis on all the subarray-level beams to obtain 128 independent beams, the beam control unit provides two-stage weighting coefficients, and the calibration unit realizes real-time calibration of channel amplitude and phase. The application realizes optimal balance between hardware complexity and beam forming capability through 16 / 32 subarray flexible switching, and is suitable for large-scale multi-beam application scenarios such as low-orbit satellite communication and radar.

The invention provides a channel state information feedback method and device based on an adaptive feedback rate. The method comprises the following steps: acquiring a channel state information matrix; inputting the sequence into a pre-training marking encoder based on an attention mechanism, and converting the sequence into a symbol sequence with a fixed length; quantizing the symbol sequence into a discrete index sequence through a pre-training vector quantizer and a codebook; determining a target length according to a real-time channel condition or a dynamically allocated system feedback resource based on a preset importance sorting rule obtained by nesting and discarding training, truncating an index sequence arranged according to an importance descending order, and retaining a front-end index to generate a variable-length feedback code word; and sending the variable-length code word to a base station for reconstruction. According to the method, the dynamic self-adaptive optimization of the feedback rate is realized, the spectrum efficiency is effectively improved, the progressive reconstruction is supported by utilizing the inherent importance sorting of the code words, and the robustness of the system is remarkably enhanced.

The application discloses a gradation design method of regenerated drainage asphalt mixture and belongs to the field of gradation design methods of asphalt mixtures. The method comprises the following steps: testing recycled RAP materials to obtain gradation parameters of the RAP materials; testing new materials to obtain gradation parameters of the new materials; establishing a calculation formula of each volume parameter of the regenerated drainage asphalt mixture; establishing an equation according to the quantity relationship of each volume parameter in the regenerated drainage asphalt mixture; and solving the equation to obtain the mass proportion of new coarse and fine aggregates under the design air voids. The mass proportion of the new coarse and fine aggregates is fitted to obtain the gradation of the regenerated drainage asphalt mixture. The air voids of the regenerated drainage asphalt mixture are tested, and the gradation design is completed when the measured air voids are within the range of the design air voids plus or minus 1%. The application simplifies the gradation design method, fully considers the characteristics of the RAP materials, makes the gradation design more reasonable, and improves the efficiency of the gradation design.