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30 results about "Window effect" patented technology

Statistically optimal near-field acoustical holography used for visual recognition of air-conditioner noise sources and operation method thereof

InactiveCN101556187APosition discriminationDiscriminant sizeSubsonic/sonic/ultrasonic wave measurementVisual recognitionData treatment
The invention provides statistically optimal near-field acoustical holography used for visual recognition of air-conditioner noise sources and an operation method thereof. The operation method comprises the followings: determining the positions, frequency characteristics and distribution ranges of the noise sources, and distance between microphones on microphone arrays, number, sample rates and number of sampling points of microphones; calibrating arrayed microphones; collecting data; recording sound pressure data; processing the sound pressure data; reading the processed data and finally entering noise source recognition procedures. By the invention, complex sound pressure on reconstructive surfaces and vibration velocity of surface particles can be calculated directly via linear superposition of the complex sound pressure on a holographic plane in a spatial domain, thus essentially overcoming window effects and wraparound errors existing in near-field acoustical holography and avoiding the problems brought about by the demand of a large number of microphones by near-field acoustical holography, such as low reconstruction efficiency of sound fields and costly cost of measuring systems, etc. The invention is characterized by small number of demanded microphones, low measuring cost and high reconstruction efficiency of the sound fields.
Owner:MIDEA GRP CO LTD

Display for immersive window effect

A system utilizes a screen (30) having a compound curvature (104, 106, 108, 110) to simulate an environment viewable from multiple vantage points. The compound curvature of the screen (30) is such that the screen is curved in at least two directions about at least two axes. The display can be positioned behind a wall (32) opening to provide a window effect. The display (30) terminates its active image area (28) outside of a region from which the display can be viewed to create a seemingly infinite simulated environment.
Owner:UNIVERSAL CITY STUDIOS LLC

Case equipment surface acoustic field reconstruction method based on statistical optimal near field acoustic holography

InactiveCN108629081AVisually see the sizeIntuitively see the distributionDesign optimisation/simulationSpecial data processing applicationsMeasurement costReconstruction method
The invention discloses a case equipment surface acoustic field reconstruction method based on statistical optimal near field acoustic holography. A measuring surface conformal with the case structureequipment is used to acquire holographic acoustic pressure, the surface acoustic field of the case structure equipment is calculated through the linear superposition of the complex acoustic pressureon the holographic surface of the spatial domain by using a statistical optimal column surface near field acoustic holography theory algorithm, and the window effect and the winding error in the nearfield acoustic holography are fundamentally solved. The method has the advantages of less number of microphones, low measurement cost, high acoustic field reconstruction efficiency, high precision andthe like. According to the method, the accurate reconstruction of the surface acoustic field of the column and column similar case structure equipment is realized, the method can be applied to underwater weapons such as a submarine, the reconstruction precision and the efficiency of the surface acoustic field of the case structure equipment can be effectively improved, the theoretical basis is provided for the acoustic stealth performance evaluation of the case structural equipment, which has important theoretical significance and engineering application value.
Owner:XI AN JIAOTONG UNIV

Garbage can without odour spreading in garbage throwing process

The invention relates to a garbage can without odour spreading in the garbage throwing process. The garbage can comprises a can body, a can cover and an operating pedal, and according to the can body,the left side wall and the right side wall are higher than the front side wall and the rear side wall; when the can cover is opened, the left side edge and the right side edge of the can cover are infriction contact with the left side wall and the right side wall of the can body all the time; a throwing sliding plate is arranged on the front can edge of a can opening, and an object carrying plate is connected to one end part of the throwing sliding plate through a shaft; the front cover edge of the can cover is connected with a gas isolating plate through a shaft, a throwing window is formedin the gas isolating plate, and a normally-closed door is connected to the throwing window through a shaft; the gas isolating plate is connected with the object carrying plate through a column-shapedclamping buckle; and the column-shaped clamping buckle comprises a cylindrical body, and a clamping groove and a clamping column which are matched with each other are formed in the two ends of the body. The garbage can effectively prevent the odour from leaking away so that the periphery of the garbage can can be kept clean for a long time; and the odour can not spread when the can cover is opened, the garbage can be thrown away conveniently and decently by residents, the occurrence of the broken window effect can be reduced, and the street environment can be effectively improved.
Owner:浙江双丰塑业有限公司

Display device

The invention discloses a display device, comprising a display panel, wherein the display panel comprises a light emitting side, a birefringent structure is disposed on the light emitting side of thedisplay panel, a plane where the birefringent structure is located is parallel to the plane where the display panel is located, and when the display device is in a display phase, on the plane parallelto the birefringent structure, the birefringent structure and the display panel generate relative rotation. In the display device disclosed by the invention, by setting the relative rotation of the birefringent structure and the display panel, the light emitting area of each pixel of the display device is expanded from the vision, the screen window effect existing in the display device in the prior art is weakened, and the display effect is improved.
Owner:SHANGHAI TIANMA MICRO ELECTRONICS CO LTD

Perovskite thin-film solar cell employing cadmium sulfide as window material and preparation method of perovskite thin-film solar cell

The invention discloses a perovskite thin-film solar cell employing cadmium sulfide as a window material and a preparation method of the perovskite thin-film solar cell. The perovskite thin-film solarcell is characterized in that the structure of the solar cell sequentially comprises a transparent conductive substrate 1, an N-type cadmium sulfide thin film 2, a P-type perovskite thin film 3, a P-type heavily doped graphene thin film 4 and a metal electrode 5 from bottom to top. The perovskite thin-film solar cell has the advantages that: on one hand, a good window effect of the cadmium sulfide is utilized and the cadmium sulfide is taken as an electronic selective contact layer, so that the photoelectric conversion efficiency of the perovskite solar cell can be greatly improved; and on the other hand, heavily doped graphene has high carrier mobility and conductivity, the perovskite thin film can be effectively prevented from being degraded by water and oxygen in air due to the compactstructure characteristic of the heavily doped graphene, harmful diffusion of the metal electrode towards the perovskite thin film is blocked, so that the stability and the photoelectric conversion efficiency of a traditional perovskite solar cell are greatly improved.
Owner:HUNAN NORMAL UNIVERSITY

Anti-blockage vehicle window mechanism with buffering

The invention belongs to the technical field of car window mechanisms, and in particular relates to an anti-jamming type car window mechanism with buffer. In the present invention, the car door has an accommodating chamber for accommodating car window devices; The role of the communication between the window and the accommodation cavity is to facilitate the working of the tempered glass; the role of the moving groove on the narrow side of the door is to facilitate the movement of the first lock cylinder; the role of the accommodation groove on the end surface of the moving groove is to facilitate the accommodation of the car lock mechanism; The function of the car lock mechanism installed in the accommodating groove is to lock the car door; the function of the vehicle window device installed in the accommodating chamber is to block the car window.
Owner:龚卫珍

Statistically optimal near-field acoustical holography used for visual recognition of air-conditioner noise sources and operation method thereof

InactiveCN101556187BPosition discriminationDiscriminant sizeSubsonic/sonic/ultrasonic wave measurementVisual recognitionData treatment
The invention provides statistically optimal near-field acoustical holography used for visual recognition of air-conditioner noise sources and an operation method thereof. The operation method comprises the followings: determining the positions, frequency characteristics and distribution ranges of the noise sources, and distance between microphones on microphone arrays, number, sample rates and number of sampling points of microphones; calibrating arrayed microphones; collecting data; recording sound pressure data; processing the sound pressure data; reading the processed data and finally entering noise source recognition procedures. By the invention, complex sound pressure on reconstructive surfaces and vibration velocity of surface particles can be calculated directly via linear superposition of the complex sound pressure on a holographic plane in a spatial domain, thus essentially overcoming window effects and wraparound errors existing in near-field acoustical holography and avoiding the problems brought about by the demand of a large number of microphones by near-field acoustical holography, such as low reconstruction efficiency of sound fields and costly cost of measuring systems, etc. The invention is characterized by small number of demanded microphones, low measuring cost and high reconstruction efficiency of the sound fields.
Owner:MIDEA GRP CO LTD
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