7results about How to "Effective balance" patented technology

The invention discloses a voiceprint recognition system attack resisting method and device, equipment and a medium, by constructing a shadow voice sample set and a substitution model, dependence on target speaker data and query capability is reduced, and privacy risk and query overhead are reduced; meanwhile, two types of substitution models are trained based on an information theory method, so that the mobility and stability of the models are improved, and the generalization ability is enhanced; besides, the attacker model adopts a specific architecture and combines an alternate training strategy, so that attack loss and prediction probability difference are optimized, imperceptibility and attack effectiveness are balanced, and tone quality reduction or attack failure is avoided; and finally, through systematic training and optimization, a more uniform evaluation caliber is expected to be provided, and more reliable guidance is provided for engineering landing and risk evaluation.

The application relates to a kind of unmanned aerial vehicle dynamic path planning methods based on hybrid intelligent optimization, introduce multi-stage hybrid intelligent optimization algorithm, on the basis of static path planning based on particle swarm optimization, consider the dynamic target condition of real-time change, when unmanned aerial vehicle gradually approaches target and needs to carry out dynamic path adjustment, utilize A* algorithm mechanism to give more accurate tracking path planning scheme, so that unmanned aerial vehicle can dynamically adjust path, effectively coordinate and complete task in overall task execution. The application comprehensively considers various complex multi-constraint conditions and coordination relationship, solves the multi-unmanned aerial vehicle dynamic target tracking path planning problem, so that unmanned aerial vehicle can quickly respond when finding out the latest position of target, dynamically and real-timely adjust the track of unmanned aerial vehicle.

The application provides a compound containing a fluorene group and an organic electroluminescent device thereof. The compound of the application contains at least one or more deuterium atoms in the structure, has higher electron mobility, and can effectively enhance the electron transport capacity of the organic electroluminescent device. The compound of the application can be applied to a light-emitting layer and an electron transport region, can effectively reduce the driving voltage of the organic electroluminescent device, improve the light-emitting efficiency, and can significantly increase the service life of the device, thereby enhancing the durability of the device. It can be widely applied to the field of information display technology, such as mobile phones, tablet computers, televisions, wearable devices, VR, vehicle displays and tail lights, etc.

The application provides a LoRa modulation method based on three-dimensional constellation assistance, and belongs to the field of signal processing. By dividing the information bit stream into a frequency index bit stream and a constellation mapping bit stream, and respectively using them to generate a three-dimensional orthogonal LoRa base signal and perform three-dimensional constellation mapping, a new three-dimensional signal space is constructed for joint modulation. This core design enables more information bits to be transmitted simultaneously within a symbol period, significantly improving the data rate of the system. More importantly, compared with the traditional two-dimensional constellation, the three-dimensional constellation can provide a larger minimum Euclidean distance between symbols under the same modulation order. This fundamental improvement in geometric characteristics directly translates into stronger anti-interference capability and lower bit error rate of the signal in noise and fading channels. Therefore, the method effectively improves the spectral efficiency of the LoRa system while enhancing its transmission reliability, achieving a synergistic improvement in performance.

This invention provides a multimodal fusion system and method based on neural networks. The fusion method specifically includes: (1) frequency filtering, which introduces a frequency filtering module before multimodal signal fusion to suppress the effects of high-frequency noise or texture artifacts in multimodal data that vary depending on the modality, thereby enabling the attention layer to focus on semantically meaningful content; (2) multimodal cross-attention fusion, which extends the early multimodal attention fusion mechanism by integrating cross-modal attention mechanisms and fine-grained hierarchical attention mechanisms through a cross-modal cross-attention fusion module to support more powerful cross-modal feature exchange. This invention can effectively improve the robustness of multimodal object detection under various datasets and sensor conditions. By combining frequency domain denoising with cross-modal perceptual attention, it can reduce noise from each modality and promote the effective exchange of complementary features between different modalities.

This utility model relates to a lifting mechanism for a welding robot, belonging to the technical field of welding robot technology. It includes a welding robotic arm and a base plate. A lifting structure and a force-bearing structure are provided on the top of the base plate. The lifting structure includes an electric slide fixedly connected to the top of the base plate. A support platform is fixedly connected to the movable shaft of the electric slide, and a control console is fixedly connected to the top of the support platform. The force-bearing structure includes a limiting frame fixedly connected to the right side of the electric slide. This lifting mechanism for the welding robot, through the action of the electric slide and the support platform, drives the control console and the welding robotic arm to move up and down. This not only achieves flexible adjustment of the welding height but also improves the adaptability and precision of welding operations. Adjusting the threaded rod adjusts the height of the force-bearing plate, and the limiting frame effectively limits the limiting plate, ensuring positioning accuracy during the lifting process and avoiding operational errors caused by mechanical shaking or offset.