12 results about "Dynamic aperture" patented technology

The invention relates to the technical field of ballast water treatment, in particular to a ballast water treatment-ultraviolet cooperative control method and system based on multi-parameter feedback, and the method comprises the steps: collecting turbidity, pressure gradient, ultraviolet light transmittance and biological activity data in real time through multiple types of sensors arranged at an inlet of a filter unit, the surface of a filter screen and an ultraviolet reactor; a composite control model fusing hydromechanics and optical characteristics is constructed, and closed-loop cooperation of aperture dynamic adjustment, ultraviolet dose compensation and directional backwashing is realized. The method is characterized in that an electrostriction filter screen is adopted to realize local aperture gradient control so as to balance flux and precision; an ultraviolet dose dynamic compensation algorithm is designed, and the irradiation efficiency is enhanced and improved in combination with a vortex flow field; and establishing a linkage optimization mechanism of the backwashing period and the service life of the equipment. A real ship verifies that the method can effectively reduce comprehensive energy consumption, can adapt to water quality fluctuation of different sea areas in the world, and meets the long-acting compliance requirement of the IMOD-2 standard.

The invention discloses a numerical simulation method and device for seepage heat transfer of a three-dimensional rough fractured rock mass, and relates to the technical field of rock mechanics engineering.The dynamic opening degree of the fractured rock mass is obtained by combining the initial opening degree and the equivalent opening degree of the fractured rock mass, and in the process of obtaining the dynamic opening degree of the fractured rock mass, the dynamic opening degree of the fractured rock mass is obtained. According to the method, based on the initial opening and the equivalent opening, the coupling influence of the shear expansion effect and roughness degradation on the fracture opening under the action of shear stress is quantified, and then based on the dynamic opening of the fractured rock mass, the point cloud data of the upper and lower fracture surfaces of the fractured rock mass after shearing is updated; the dynamic updating of the three-dimensional geometrical morphology of the real fracture in the shearing process is realized, and the bidirectional coupling simulation of the seepage field and the temperature field is realized based on the three-dimensional geometrical morphology data of the real fracture, so that the precision of the seepage heat transfer numerical simulation of the fractured rock mass is improved.

An aperture assembly for use with a subsurface ejection vessel includes an electromagnet, a first dynamic aperture, a second dynamic aperture, a hollow shaft injection drill bit, a third dynamic aperture, collar perforations, and closed window apertures. The electromagnet actuates a closing of the first dynamic aperture. The electromagnet actuates an opening of the second dynamic aperture. The third dynamic aperture dynamically opens when triggered by a first pre-determined depth achievement counting by the encoder of the lead screw or distance traveled by a platform (505A) triggered by the limit switch that are communicated to the AI robot, the computer, and the PLC. The third dynamic aperture dynamically opens when the camera lens has a second pre-determined depth penetration of the hollow shaft injection drill bit and that the limit switch information is communicated to the computer, or the PLC.

The application discloses a remote personnel positioning and high-definition image monitoring system based on a 5G network, relates to the technical field of 5G intelligent monitoring and positioning, and comprises a 5G fusion positioning module, an intelligent image acquisition and processing module, and a 5G edge computing and transmission module.The 5G fusion positioning module uses composite positioning and multipath separation technology.The intelligent image acquisition and processing module is equipped with a dynamic aperture camera and super-resolution reconstruction, supports 8K quality and full-scene perception, and comprises a federal learning framework and dynamic code rate adaptation.The system also has a dynamic networking module, a multi-modal fusion module, an intelligent early warning module and the like, and improves the anti-interference and cooperative capabilities.The application realizes 5G fusion positioning and 8K high-definition monitoring, has strong anti-interference capability, intelligent early warning, privacy protection and long endurance, is suitable for intelligent security, industrial inspection and the like, greatly improves the emergency response efficiency, and promotes the landing of 5G intelligent application.

The application discloses an ultrasonic CT waveform inversion method and device based on a dynamic aperture, and belongs to the technical field of ultrasonic image processing, and comprises the following steps: acquiring an observed sound pressure signal at a position of a receiving element of an ultrasonic CT data acquisition system; inputting a current sound velocity distribution into a wave equation to obtain a synthesized sound pressure signal at the position of the receiving element; for each transmitting element, extracting the synthesized sound pressure signals at the positions of M receiving elements away from the transmitting element; calculating the difference between the synthesized sound pressure signals at the positions of the M receiving elements corresponding to all the transmitting elements and the corresponding observed sound pressure signals; calculating the gradient of the current sound velocity distribution by using an adjoint state method according to the difference, and then obtaining an updated sound velocity distribution; re-substituting the updated sound velocity distribution into the wave equation for iteration, and simultaneously increasing the value of M until the iteration is stopped, and outputting the updated sound velocity distribution. The application can improve the accuracy of a reconstructed image under the condition of missing low-frequency information.

Embodiments of the present disclosure disclose a system, a method, and an apparatus for generating a depth image. A specific implementation of the system includes: an illumination source, an optical system, a control device, and at least one set of dynamic apertures and corresponding image sensors. The dynamic apertures are configured to dynamically change the light transmittance, the exposure start time, and the exposure end time under the control of the control device. The control device is configured to: obtain a first photo and a second photo, where the first photo and the second photo are photos obtained by the image sensor capturing a target scene according to first shooting configuration information and second shooting configuration information respectively; generate a depth image of the target scene based on the first photo, the first shooting configuration information, the second photo, and the second shooting configuration information. This implementation reduces the economic cost of generating a depth image and improves the image resolution of the generated depth image.

According to the FSO system visual feedback alignment device based on multi-optical-axis rigid integration, the independent optical axis design is adopted, no spectroscope is arranged in a signal receiving main link, zero-loss receiving of light energy is achieved, the sensitivity of a communication system is remarkably improved, the communication distance of the communication system is remarkably increased, and energy efficiency maximization is achieved. In order to solve the parallax problem caused by an independent optical axis, a dynamic aiming circle is designed, and zoom self-adaptive'dynamic aperture 'aiming can be achieved. The upper computer calculates and draws a circle representing an optimal power point in real time according to the current camera magnification, and a user does not need to care about a specific angle value and only needs to move a beacon light spot into the circle, so that accurate alignment can be realized. A zoom camera structure is adopted, the contradiction that a single focal length cannot give consideration to near-field wide-angle search and far-field long-focus identification is solved, a target can be seen clearly through zoom under different communication distances, and the alignment precision is ensured through an algorithm.

The invention discloses a remote personnel positioning and high-definition image monitoring system based on a 5G network, and relates to the technical field of 5G intelligent monitoring and positioning, and the system comprises a 5G fusion positioning module which employs a composite positioning and multipath separation technology; the intelligent image acquisition and processing module is matched with a dynamic aperture camera and super-resolution reconstruction, and supports 8K image quality and full-scene perception; and the 5G edge calculation and transmission module comprises a federated learning framework and dynamic code rate adaptation, and the system is further provided with a dynamic networking module, a multi-mode fusion module, an intelligent early warning module and the like, so that the anti-interference and cooperative capability is improved. According to the invention, 5G fusion positioning and 8K high-definition monitoring are realized, the anti-interference capability is strong, intelligent early warning, privacy protection and long endurance are realized, the system is suitable for scenes such as intelligent security and industrial inspection, the emergency response efficiency is greatly improved, and the 5G intelligent application is promoted to the ground.

The present invention relates to the technical field of laser processing, and discloses a vacuum pulsed laser processing system and method for enhancing beam quality. The method includes: performing spatial filtering on the beam of pulsed laser in a vacuum environment by using a spatial filter; using a wavefront detection unit of a wavefront sensor to detect the wavefront information of the beam after spatial filtering in real time; obtaining the dynamic aperture size of the aperture in the spatial filter according to the wavefront information; determining whether the dynamic aperture size meets a preset standard, and if not, adjusting the aperture size and / or angle of the aperture until the dynamic aperture size meets the preset standard; wherein, the preset standard is that the dynamic aperture size should be within a preset range of minimum aperture size and maximum aperture size. Applying the present invention can achieve high-precision wavefront detection and automatic adjustment functions, realize efficient and reliable beam quality control, and is applicable to high-precision optical and laser technology applications.

The present invention provides a high-resolution spatial spectrum direction finding method and system based on dynamic aperture adjustment, belonging to the field of communication technologies. The present invention dynamically adjusts the aperture, calculates the direction finding result under this aperture, and judges whether this direction finding result is valid according to certain criteria. If the direction finding result is valid, it stops adjusting the aperture and returns the direction finding result. If the direction finding result is invalid, it continues to adjust the aperture until the upper limit of aperture adjustment is reached. If there is no valid direction finding result even when the upper limit is reached, it returns the direction finding result of the initial aperture. The present invention solves the technical problem of insufficient direction finding resolution caused by a small array aperture corresponding to the signal frequency.

Disclosed is an aperture assembly for use with a downhole ejection cell, which includes an electromagnet, a first dynamic aperture, a second dynamic aperture, a hollow shaft injection drill bit, a third dynamic aperture, a collar perforation, and a closed window aperture. The electromagnet actuates the closure of the first dynamic aperture. The electromagnet actuates the opening of the second dynamic aperture. The third dynamic aperture dynamically opens when triggered by either a count for achieving a first predetermined depth by an encoding section of a lead screw communicated to an AI robot, a computer, and a PLC, or a travel distance by a platform (505A) triggered by a limit switch. The third dynamic aperture dynamically opens when a camera lens has a second predetermined depth intrusion into the hollow shaft injection drill bit, and the information of its limit switch is communicated to a computer or a PLC.

This patent proposes a flight simulation method and system based on UAV-mounted backlighting imaging technology. This technology solves the key scientific issues of target perception and recognition of UAV platforms in backlighting environments, and provides an innovative solution for the cross-study of high dynamic range imaging, target detection, and intelligent flight control. By introducing a backlighting imaging camera and dynamic aperture control technology, combined with multi-point calibration and multi-scale noise reduction methods, it effectively overcomes traditional problems such as insufficient imaging dynamic range, loss of image details, and random noise interference in backlighting environments. At the same time, the image enhancement method based on the generative adversarial network achieves high-fidelity reconstruction of target texture and structural features under complex lighting conditions, avoiding the common artifacts and color drift problems in traditional enhancement algorithms. Furthermore, by combining the enhanced and optimized YOLO detection framework with a high-resolution feature pyramid network, a high-precision detection model for small targets adapted to backlighting scenes was successfully constructed, which significantly improved the robustness and real-time performance of detection while maintaining detection accuracy.