Abstract: The photovoltaic module includes multiple cell sheets arranged in an array including multiple rows and multiple columns. Each of the multiple rows of cell sheets is arranged at intervals along a first direction, each of the multiple columns of cell sheets is arranged at intervals along a second direction. The photovoltaic module includes multiple support plates arranged at intervals, where each of the multiple support plates extends along a direction in which each of the multiple rows or multiple columns of cell sheets is arranged, and each of the multiple support plates is arranged on the second surface of each of the multiple rows or the multiple columns of cell sheets. The photovoltaic module further includes a first flexible cover layer arranged on a side of the first surface of each of the multiple cell sheets and a second flexible cover layer arranged on each of the multiple support plates.

Abstract: The photovoltaic module includes multiple cell sheets arranged in an array including multiple rows and multiple columns, where each of the multiple rows of cell sheets is arranged at intervals along a first direction, each of the multiple columns of cell sheets is arranged at intervals along a second direction, and each of the multiple cell sheets has a first surface and a second surface. The photovoltaic module further includes a first flexible cover layer located on a side of the first surface of each of the multiple cell sheets, and a second flexible cover layer located on a side of the second surface of each of the multiple cell sheets. The photovoltaic module is configured to be folded along a gap between two adjacent rows of cell sheets or along a gap between two adjacent columns of cell sheets with the folding angle of 0 degree to 180 degrees.

Abstract: A method for measuring drop time of a control rod cluster integrated with a rod position measurement device is provided, wherein the method is used to measure the drop time of each control rod cluster, and includes: Si, monitoring a voltage Ua of coils in Group A to capture a rod cluster drop signal; S2, searching a point (tmax, Vmax) with a maximum drop speed or with a local maximum drop speed; S3, retroactively calculating, from tmax, an end of a time period T4 when the control rod cluster starts to drop; S4, retroactively searching, from a minimum value point of a drop reference signal DROPref, a start of the time period T4 when the drop reference signal DROPref drops from a maximum value to 33% thereof; and S5, determining, from tmax forward, a time point t6 when a drop speed of the control rod cluster is lower than 0.

Abstract: A method of a polyurethane foam includes the following steps of: (1) simultaneously pumping a mixed solution prepared from hydrogen peroxide, an organic acid, a catalyst and a stabilizer and a vegetable oil into a first microstructured reactor of a micro-channel modular reaction device for reacting to obtain a reaction solution containing epoxidized vegetable oil; (2) simultaneously pumping the reaction solution containing the epoxidized vegetable oil obtained from the step (1) and a compound of formula III into a second microstructured reactor of the micro-channel modular reaction device for reaction to obtain a vegetable oil polyol; and (3) reacting the vegetable oil polyol prepared from the step (2) with a foam stabilizer, a cyclohexylamine, an isocyanate and a foaming agent cyclopentane for foaming so as to prepare a rigid polyurethane foam.

Abstract: A preparation method of a flexible polyurethane foam includes the following steps of: (1) subjecting an epoxidized vegetable oil, a benzoylformic acid, a basic catalyst, and an inert solvent to a ring-opening reaction in a first microchannel reactor of a microchannel reaction device to obtain a vegetable oil polyol; (2) subjecting the vegetable oil polyol obtained in the step (1), a propylene oxide and an inert solvent to an addition polymerization reaction in a second microchannel reactor of the microchannel reaction device to obtain a vegetable oil polyol for flexible polyurethane foam; and (3) using the vegetable oil polyol for flexible polyurethane foam obtained in the step (2) as the unique polyol, and subjecting the same and an isocyanate polyol to a foaming reaction to obtain the flexible polyurethane foam.

Abstract: A method for presenting a virtual representation of a real space is provided. The method includes: obtaining a plurality of color images and a plurality of depth images respectively corresponding to the plurality of color images; for any of the plurality of observation points, superimposing a color image corresponding to the observation point and a depth image corresponding to the color image, to obtain a superimposed image; respectively mapping respective superimposed images corresponding to the plurality of observation points to a plurality of spheres in a virtual space; performing spatial transformation on vertices of the plurality of spheres in the virtual space; and for any vertex of any of the spheres, performing spatial editing and shading, so as to obtain and present respective virtual representations, in the virtual space, of respective partial scenes of a real space.

Abstract: A method for capturing an image of a scene using an imaging device is disclosed herein. The method includes determining a coordinate system with an origin based on an initial position of the imaging device, generating a first condition to control the position of the imaging device in the coordinated system with respect to the origin, generating a second condition to control the orientation of the imaging device, determining a position and an orientation of the imaging device, generating a first prompt message in response to the position of the imaging device satisfying the first condition, and generating a second prompt message in response to the orientation of the imaging device satisfying the second condition.

Abstract: Systems and methods for constructing a three-dimensional panorama model of an object are disclosed. An exemplary system includes a storage device configured to receive a plurality of point clouds each acquired at a different view angle. Each point cloud includes three-dimensional positions of a plurality of target points on a surface of the object. The system further includes at least one processor configured to determine elevation and normal at each target point in each point cloud and convert the elevation of each target point to color information. The at least one processor is further configured to register every two adjacent point clouds among the plurality of point clouds based on the three-dimensional positions, the normal, and the color information of the respective target points of the two adjacent point clouds. The at least one processor is also configured to render the three-dimensional panorama model based on the registered point clouds.

Abstract: A method for capturing an image of a scene using an imaging device is disclosed herein. The method includes determining a coordinate system with an origin based on an initial position of the imaging device, generating a first condition to control the position of the imaging device in the coordinated system with respect to the origin, generating a second condition to control the orientation of the imaging device, determining a position and an orientation of the imaging device, generating a first prompt message in response to the position of the imaging device satisfying the first condition, and generating a second prompt message in response to the orientation of the imaging device satisfying the second condition.

Abstract: Systems and methods for constructing a three-dimensional panorama model of an object are disclosed. An exemplary system includes a storage device configured to receive a plurality of point clouds each acquired at a different view angle. Each point cloud includes three-dimensional positions of a plurality of target points on a surface of the object. The system further includes at least one processor configured to determine elevation and normal at each target point in each point cloud and convert the elevation of each target point to color information. The at least one processor is further configured to register every two adjacent point clouds among the plurality of point clouds based on the three-dimensional positions, the normal, and the color information of the respective target points of the two adjacent point clouds. The at least one processor is also configured to render the three-dimensional panorama model based on the registered point clouds.

Abstract: In an engine piston assembly of the present invention, a piston structure, together with a piston ring set matched to the piston structure and an inner wall of a cylinder bore body, forms a crevice passage having at least two annular expansion chambers and also having a function of multistage throttling and expansion. The engine piston assembly of the present invention can not only greatly and effectively reduce the intra-cylinder carbon deposition and the hydrocarbon emissions in the exhaust gas emissions of the engine, but also significantly improve the engine efficiency and the overall performance of the engine, so that the present invention is suitable for wide applications.

Abstract: The present invention discloses a piston for an engine. The piston comprises a piston body; wherein, a top land, a first compression ring groove, a second land, a second compression ring groove, a third land, an oil ring groove are disposed in turn on the periphery of the piston body from top to bottom; the ratio of the depth of the first compression ring groove to the depth of the second compression ring groove is less than or equal to 1.0; at least one of annular expansion grooves are disposed on the periphery of the second land and/or the third land, to reduce the intra-cylinder carbon deposition and the hydrocarbon emissions in the exhaust gas emissions of the engine and thus improve the engine efficiency and the overall performance of the engine.

Abstract: The present invention discloses an energy-saving and emission-reducing multistage throttling expansion method for engine. In a crevice passage disposed between the combustion chamber and the crankcase, a multistage throttling is disposed for converting pressure energy of the high-pressure blow-by gas into kinetic energy and momentum, and a multistage expansion is disposed for expanding and dissipating the incoming kinetic energy and momentum of the high-velocity blow-by gas into heat, so that to realize the multistage throttling and expansion method, reduce the leaking of the unburned fuel-air mixture and the burned gas, the hydrocarbon emissions hidden in the intra-cylinder carbon deposition and exhaust gas emissions of the engine, and also improve the engine efficiency and the overall performance of the engine.

Abstract: A method for measuring thickness or defect depth by pulsed infrared thermal wave technology is described. The method includes heating a measured object by pulsed heating devices, and at the same time, obtaining a thermal image sequence on the surface of the measured object by an infrared thermography device, and storing the thermal image sequence in a general-purpose memory. The method also includes multiplying a temperature-time curve at every point of the thermal image sequence by a corresponding time, thereby obtaining a new curve. The method also includes calculating a first-order differential and obtaining a peak time thereof. The method also includes use of one or more formulas to thereby determine the thickness or the defect depth of the measured object.

Abstract: A downlink orthogonal variable spreading factor (OVSF) code assignment method is provided. It is determined whether a spreading factor required by a service request is greater than a remaining capacity of assignable spreading factors of a code tree. If not, the code tree is searched from a root until a node of a layer corresponding to the required spreading factor is reached and thus defined as a first node. During the searching, when a searched node is unassigned, the searching continues leftward in a lower layer; and when the searched node is in an assigned state, the searching continues rightward in a same layer of the searched node. It is determined, from the first node, whether any assignable code is available in the layer corresponding to the required spreading factor. If available, an assignable code is assigned to a communication service corresponding to the service request.

Abstract: Disclosed in the present embodiments are a foldable pressing device and an X-ray machine. The foldable pressing device includes a motor, a lifting member, a pressing member, a linear guide member with a stop position, a pulling member and a resilient member. The lifting member, driven by the motor, causes a sliding element in the linear guide member with a stop position and the pressing member to move upwards. When the sliding element arrives at an uprising stop position, the pressing member, under the effect of the lifting member and the pulling member, overcomes the resistance of the resilient member to realize the folding thereof. The lifting member, driven by the motor, drives the pressing member to move downwards, and the pressing member is unfolded under the effect of the resilient member.

Abstract: A method for measuring thickness or defect depth by pulsed infrared thermal wave technology is described. The method includes heating a measured object by pulsed heating devices, and at the same time, obtaining a thermal image sequence on the surface of the measured object by an infrared thermography device, and storing the thermal image sequence in a general-purpose memory. The method also includes multiplying a temperature-time curve at every point of the thermal image sequence by a corresponding time, thereby obtaining a new curve. The method also includes calculating a first-order differential and obtaining a peak time thereof. The method also includes use of one or more formulas to thereby determine the thickness or the defect depth of the measured object.

Abstract: Disclosed in the present embodiments are a foldable pressing device and an X-ray machine. The foldable pressing device includes a motor, a lifting member, a pressing member, a linear guide member with a stop position, a pulling member and a resilient member. The lifting member, driven by the motor, causes a sliding element in the linear guide member with a stop position and the pressing member to move upwards. When the sliding element arrives at an uprising stop position, the pressing member, under the effect of the lifting member and the pulling member, overcomes the resistance of the resilient member to realize the folding thereof. The lifting member, driven by the motor, drives the pressing member to move downwards, and the pressing member is unfolded under the effect of the resilient member.

Abstract: A gap protection device for an examining table includes a guide rail, a protecting chain and a rigid rope. The guide rail is fixed onto the non-moving part of the examining table. One end of the protecting chain is fixed onto the body of the examining table and is movable along the guide rail so as to cover the gap between the body and the non-moving part of the examining table. The two ends of the rigid rope are respectively connected to the two ends of the protecting chain. When the examining table is moved, the closed loop formed by the protecting chain and the rigid rope circulates synchronously under the drive of the examining table, such that the protecting chain covers the gap between the body and the non-moving part of the examining table.