Abstract: Provided is a corner protection device, comprising a slide rail shaft, a corner protection and detent mechanism, and a corner protector. The slide rail shaft is fixed on the LED display screen cabinet, the corner protection and detent mechanism is fixed on the sidewall at the top of the cabinet, and the corner protector is slidably disposed on the slide rail shaft. When the corner protector slides to the top of the cabinet, the corner protection and detent mechanism can fix the corner protector on the top of the cabinet so as to protect it. Also provided is an LED display screen cabinet, comprising the corner protection device mentioned above, and a support piece arranged on the sidewall of the cabinet. When the corner protector is fixed on the top of the cabinet, the support piece and corner protector can jointly support the display screen cabinet on the support platform.

Abstract: The application provides a floor tile screen, comprising a box body (1), a rear body (2), a PCB board (3) and a front body (4), wherein the rear body (2) is fixed on the box body (1); the PCB (3) is arranged between the rear body (2) and the front body (4), and provided with lamp beads; a plurality of transparent fixing columns (41) are fixedly arranged on the front body (4), pass through the PCB board (3), fixedly connected with the rear body (2), and avoid the lamp beads. The fixing column (41) has the function of limiting the front body (4), the front body (4) and the rear body (2) are connected together by fixing columns (41), to avoid separation; the fixing columns (41) are transparent, so that the light emitted by the lamp beads is not blocked, the display effect of the floor tile screen is improved.

Abstract: Embodiments of the present application relate to the technical field of projection, and in particular, relate to a projection method and a projection device. The projection method includes: acquiring a projection image and an environmental image when a screen picture is projected to a projection region, wherein the environmental image includes an image when a predetermined projection screen picture is projected to the projection region or an image when no screen picture is projected to the projection region; regulating an aperture based on the projection image and the environmental image, wherein the aperture is configured to control a light flux projected to the projection region. Therefore, by adjusting the light flux, impacts caused by the stray light may be mitigated, and a relationship between projection contrast and luminance may be better coordinated, such that the projection contrast and luminance are effectively balanced and hence projection quality is improved.

Abstract: The present disclosure relates to a vibrating mirror adjustment apparatus, system and method, and a projector. The vibrating mirror adjustment apparatus includes: an image feature acquiring module, an image identifying module, a resolution extracting module, and a vibrating mirror control module. The vibrating mirror adjustment apparatus identifies the category of the projected image and the resolution information corresponding to the projected image based on the acquired information feature of the projected image, then identifies whether vibration of the vibrating mirror is used to improve a resolution of an image, and further automatically controls the on or off state of the vibrating mirror, such that an optimal projection display effect is achieved, and visual enjoyment of a user is greatly improved.

Abstract: The projection apparatus includes: a projection unit, a support frame, a mirror assembly, a mirror balance assembly, and an adjustment device. The projection unit is configured to emit a projection light beam. The mirror assembly is configured to reflect the projection light beam emitted by the projection unit. One end of the support frame is fixed to the projection unit, and the other end of the support frame is suspended. The mirror balance assembly is configured to suspend the mirror assembly to the other end of the support frame that is suspended. The mirror assembly is rotatable about at least one axis of rotation relative to the support frame. The adjustment device is configured to cause the mirror assembly to be inclined along the at least one axis of rotation relative to the mirror balance assembly. In this way, the mirror assembly is flexibly adjusted at a plurality of angles.

Abstract: Embodiments of the disclosure provide a method for wall surface calibration, a method for edge calibration, a calibration apparatus, and a computer program product. The method for wall surface calibration comprises: acquiring a first rotation parameter and a second rotation parameter when a center of a projection picture of the calibration apparatus directly faces two boundary points on a top edge of the wall surface respectively; acquiring a third rotation parameter and a fourth rotation parameter when the center of the projection picture of the calibration apparatus directly faces two boundary points on a bottom edge of the wall surface respectively; and determining a surface calibration parameter of the wall surface relative to the calibration apparatus according to the first edge calibration parameter, the second edge calibration parameter, the first rotation parameter, the second rotation parameter, the third rotation parameter and the fourth rotation parameter.

Abstract: Provided is an anti-impact LED display screen, comprising a box body (1), a module (2), a protective mechanism (3), a first resilient assembly (4), a second resilient assembly (5) and a limit member (6). The protective mechanism (3) comprises a movable base (31) and a corner armor (32).

Abstract: Provided is an anti-impact LED display screen, comprising a box body (1), a module (2), a protective mechanism (3), a first resilient assembly (4), a second resilient assembly (5) and a limit member (6). The protective mechanism (3) comprises a movable base (31) and a corner armor (32).

Abstract: Embodiments of the present disclosure propose a method for controlling projection of a projection module, a projection system and a storage medium. The method for controlling projection of the projection module includes: obtaining a projection environment where the projection module is located, and determining a position of a target person according to the projection environment; and planning the best projection position in the projection environment according to the projection environment and the position of the target person. The best projection position in the projection environment is planned according to the position of the target person, so that the projection picture projected by the projection module can be adaptively changed along the position of the target person to fit with the current status of the target person to improve the perception experience of the user.

Abstract: Embodiments of the present disclosure relate to the technical field of digital projection display, and disclose a dynamic projection device, a dynamic projection method, and a projector. The device includes: a projection unit configured to output a projection picture according to a projection image; a reflection unit configured to reflect the projection picture to a target projection position; an angle calculation unit connected with the reflection unit and configured to calculate a rotation angle of the reflection unit; and an image correction unit connected with the angle calculation unit and the projection unit, respectively, and configured to correct the projection image according to the rotation angle. The present disclosure adjusts the projection direction by controlling the reflection unit with simple structure and light weight, realizing convenient direction control and high-quality projection display, and covering a wide area of the projection environment.

Abstract: Provided is a sealing ring, including a ring body, wherein the ring body includes a ring groove, a first convex ring is provided on each of the upper and lower surfaces of the bottom wall of the ring groove, and the first convex ring is a closed ring with the same extension direction as the ring groove. The side wall of the ring groove reduces the impact force of water, pressure between the first convex ring and sealed body is increased, and the sealing performance of the first convex ring is improved. Further provided is An LED display screen, including a module, box, power box and a plurality of sealing rings, wherein a first sealing ring is disposed between the power box and box, a second sealing ring is disposed between the box and module; the two rings have good sealing performance, which improves sealing performance of the LED screen.

Abstract: A method for preparing a biosensing membrane: electrochemically activating and modifying an oxidoreductase, then performing a cross-linking treatment using a chemical cross-linking agent, and then coating on a surface of an electrode, thereby forming a biosensing membrane, wherein the chemical cross-linking agent is glutaraldehyde or polyethylene glycol diglycidyl ether. Also disclosed are a prepared biosensing membrane and monitoring device. The provided preparation method, or the biosensing membrane and monitoring device prepared by the preparation method are stable and durable, and may carry out a plurality of detections, and the foregoing biosensing membrane is particularly suitable to act as a biosensing membrane of a living body monitoring device.

Abstract: Provided is an LED Screen, comprising a box frame and a display unit fixed in the box frame, wherein the display unit comprises a PCB board and a plurality of LED lamp beads fixed on the PCB board, the front and back of the display unit are covered with transparent waterproof membranes, which can play a waterproof role and avoid short circuit of the display unit; Waterproof membranes can also play a role in protecting the LED lamp beads and PCB board, preventing external objects from damaging the beads, and the PCB board from being corroded. Transparent waterproof membrane is easier for the light emitted from LED Lamp beads to pass through, so the PCB board installed with LED lamp beads and covered with waterproof membranes can be directly fixed on the box frame, and can be used, the PCB board can be directly maintained, which is simple and convenient.

Abstract: Provided is a sealing ring, including a ring body, wherein the ring body includes a ring groove, a first convex ring is provided on each of the upper and lower surfaces of the bottom wall of the ring groove, and the first convex ring is a closed ring with the same extension direction as the ring groove. The side wall of the ring groove reduces the impact force of water, pressure between the first convex ring and sealed body is increased, and the sealing performance of the first convex ring is improved. Further provided is An LED display screen, including a module, box, power box and a plurality of sealing rings, wherein a first sealing ring is disposed between the power box and box, a second sealing ring is disposed between the box and module; the two rings have good sealing performance, which improves sealing performance of the LED screen.

Abstract: The present invention discloses a one-side rotating arc lock which comprises an adjusting assembly arranged on a first shell and a strainer arranged on a second shell. The adjusting assembly comprises an arc adjuster rotatably connected with the first shell. The arc adjuster is provided with multiple protrusions in the circumferential direction, used for adjusting the angle between the first and the second shell. Groove is provided on the protrusion. The strainer comprises an adjusting rod which matches the groove for locking the first and the second shell. The angle between the first and the second shell is adjusted through the arc adjuster rotatably connected with the first shell, and locking of the first and the second shell is achieved through the strainer. The one-side rotating arc lock of the preset invention not only has a simple structure and easy to operate, but also facilitates adjustment of the angle.

Abstract: A mobile device and method for advertisement projecting. The mobile device includes: a main unit with a control circuit board; a projection module for projecting advertisement contents; a projection display window for completely displaying projection contents from the projection module, a camera module group for acquiring projection environment information in front of and behind the projection display window, and a main unit fixing device for fixing the mobile device for advertisement projecting on a mobile body. The main unit is configured to push corresponding advertisement contents which is projected by the projection module according to the projection environment information.

Abstract: A bi-directional excitation color wheel includes a first working surface and a second working surface which are of the same size, wherein the first working surface includes a first working ring and a second working ring which are concentric rings; the second working surface includes a third working ring and a fourth working ring which are concentric rings; the first working ring includes a first translucent region and a green fluorescent region, the second working ring includes a second translucent region, the third working ring includes a third translucent region, and the fourth working ring includes a fourth translucent region and a first fluorescent region; the first translucent region and the third translucent region are the same translucent region, and the second translucent region and the fourth translucent region are the same translucent region.

Abstract: Systems and methods for Value at Risk anomaly detection using a hybrid of deep learning and time series models are disclosed. In one embodiment, in an information processing device comprising at least one computer processor, a method for Value at Risk (VaR) anomaly detection, may include: (1) calculating a current period VaR; (2) training at least one hybrid model using historical VaR calculations; (3) calculating a forecasted VaR value using the at least one hybrid model; (4) detecting an anomaly based on the current period VaR and the forecasted VaR; and (5) generating a notification in response to the detected anomaly.

Abstract: A curved-surface apparatus for wavelength converting. The apparatus includes: a light source excitation unit comprising a plurality of light source exciters for emitting identical or different excited light, respectively; a wavelength conversion unit provided with annular structure; a plurality of component sets circularly disposed on a curved surface of the annular structure and divided into a plurality of component regions provided with predetermined color wavelength conversion substances; a beam splitter set configured to reflect the excited light emitted by the light source excitation unit and transmit predetermined light; a condenser lens set disposed near the wavelength conversion unit.

Abstract: A color wheel includes an inner ring, including translucent regions which are diagonally distributed; and an outer ring, including fluorescent regions and a translucent region, the fluorescent regions including green fluorescent regions and yellow fluorescent regions, the green fluorescent regions being diagonally distributed; wherein, the angles of the translucent regions of the inner ring are greater than or equal to the angles of the green fluorescent regions of the outer ring, the angle extension lines of the ring-shaped green fluorescent regions passing through the center of a circle fall within the ring-shaped translucent regions of the inner ring, such that the green light generated in the green fluorescent regions passes through the translucent regions after being reflected, and the yellow light generated in the yellow fluorescent regions is projected to a red light filter after being reflected.