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477 results about "Acoustic equipment" patented technology

Multi GPU calculation based reverse time migration imaging method of 3D TTI medium

The invention discloses a multi GPU calculation based reverse time migration imaging method of a 3D TTI medium. According to the method, a stable second-order coupling equation set serves as a calculation model, finite SV wave components are given to enhance the wave field spreading stability, an anisotropy parameter matching method is used to suppress interference of pseudo-transverse waves, uniform anisotropy boundaries corresponding to a random speed boundary and other parameters are introduced, storage of large amount of wave field data and frequency disk reading and writing are avoided, and a GPU-based CUDA platform is used to realize high-performance parallel calculation. According to the invention, a second-order coupling quasi-acoustic equipment in the TTI medium is solved in a difference method on the basis of multi-GPU parallel calculation technology, wave field spreading is stable, pseudo-transverse waves are suppressed effectively, application of the random boundary reduces wave field storage and disk reading and writing, a multi-asynchronous-flow high parallel strategy of multi GPU calculation is used, the calculation efficiency is improved obviously, and the imaging method meets requirements for industrialization of anisotropy reverse time migration.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING)

Man-machine interactive electronic globe

The invention discloses a man-machine interactive electronic globe. The man-machine interactive electronic globe comprises a globe model and a projection exhibition system. The globe model comprises a base, a rotation shaft, a globe body, a plurality of touch sensors and a control circuit board, wherein the rotation shaft is mounted on the base, the globe body is mounted on the rotation shaft and positions of various places in the world are marked on the globe body, the touch sensors are mounted on the inner wall of the globe body and are corresponding to the position marks of various places in the world, the control circuit board is arranged in the globe body, a microprocessor module and a first wireless communication module connected with the microprocessor module both are integrated on the control circuit board, and the plurality of touch sensors are all connected with the input end of the microprocessor module. The projection exhibition system comprises a master control computer, a projection screen and a second wireless communication module, wherein the projection screen is arranged in front of the master control computer, the second wireless communication module is connected with the master control computer, and the output end of the master control computer is connected with a projector and a sound equipment. The man-machine interactive electronic globe is simple in structure, rational in design, simple to operate, high in intelligent degree, high in interestingness, powerful, high in practicability and convenient to popularize.
Owner:XIAN INTEVIEW INFORMATION & TECH

Light airplane comprehensive obstacle avoiding system

The invention provides a light airplane comprehensive obstacle avoiding system. The light airplane comprehensive obstacle avoiding system comprises data acquisition equipment including aviation bus conversion equipment, GPS (Global Position System) equipment and two high-definition cameras and the like, data processing equipment including two sets of video processing equipment, an embedded type computer, a server and the like, and man-machine interaction equipment including a control panel, sound equipment, a liquid crystal display and the like. The two high-definition cameras are integrated and designed into a nacelle and the optical axes are parallel; and an image plane is parallel or overlapped so that a distance measuring error is reduced. The video processing adopts an FPGA+FIFO+DSP (Field Programmable Gate Array+First-In First-Out-Digital Signal Processor) framework, and a DSP is connected by a high-speed interface. The GPS is fused with a digital map and the like so that known obstacles are avoided. The unknown obstacles are realized by real-time video processing. The server is operated by adopting a website form. The light airplane comprehensive obstacle avoiding system has the advantages that an avionics comprehensive technology, a vision identification technology and a digital map technology are adopted so that a light airplane comprehensive obstacle avoiding function is realized; and the video processing speed is rapid, and the system is economical and intelligent.
Owner:辽宁飞羽航空科技有限公司
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