Abstract: A material completeness detection method configured to detect whether materials of a target object in a physical production line are complete, includes: inputting an image of the target object in the physical production line into a material completeness detection algorithm to acquire a first detection result; inputting a virtual model of the target object in a virtual production line into the material completeness detection algorithm to acquire a second detection result, where the virtual production line is a DT of the physical production line; and acquiring a material completeness detection result of the target object based on the first detection result and the second detection result. The embodiments of the present disclosure can realize efficient and accurate material completeness detection.

Abstract: A telescopic mechanism includes a fixed part, a movable part and a telescopic assembly, where the telescopic assembly includes m folding telescopic frames and m-1 balance connecting rod groups; two ends of the folding telescopic frame are connected to the fixed part and the movable part respectively, the m folding telescopic frames are disposed at intervals in a first direction, and the first direction is perpendicular to a telescoping direction of the telescopic assembly; and each balance connecting rod group is disposed between two adjacent folding telescopic frames, each balance connecting rod group includes at least one balance connecting rod, and two ends of each balance connecting rod are connected to the two adjacent folding telescopic frames respectively.

Abstract: Embodiments of the present disclosure relate to a solar cell and a photovoltaic module. The solar cell includes a thin-film solar cell and a bottom cell stacked in a first direction. The bottom cell has a stacked structure in the first direction including: a transparent conductive layer, a first doped conductive layer, an intrinsic amorphous silicon layer, a substrate, a selective passivation layer, and one or more electrodes. The selective passivation layer covers a portion of a surface of the substrate away from the intrinsic amorphous silicon layer and includes a plurality of passivation contact structures arranged at intervals in a second direction. Each passivation contact structure includes a tunneling layer and a second doped conductive layer stacked in the first direction. The electrodes are formed on a surface of the selective passivation layer away from the substrate and are in ohmic contact with second doped conductive layers.

Abstract: The solar cell includes a substrate having electrode regions and non-electrode regions defined alternatively, where a surface of the electrode regions has a first surface structure, a surface of the non-electrode regions has a second surface structure, the first surface structure has a smaller roughness than the second surface structure, and the second surface structure includes multiple first protrusion structures. The solar cell further includes a tunneling dielectric layer, and a first doped conductive layer arranged on the tunneling dielectric layer. The solar cell further includes a passivation layer arranged on the non-electrode regions and the first doped conductive layer and a first electrode arranged in the electrode regions. The first electrode penetrates the passivation layer to be in electrical contact with the first doped conductive layer.

Abstract: Embodiments of the present disclosure relate to a solar cell and a photovoltaic module. The solar cell includes a thin-film solar cell and a bottom cell stacked in a first direction. The bottom cell includes: a transparent conductive layer, a first doped conductive layer, an intrinsic amorphous silicon layer, a substrate, a second doped conductive layer, and one or more electrodes that are stacked in the first direction. The transparent conductive layer is between the thin-film solar cell and the first doped conductive layer, and the one or more electrodes are formed on a side of the second doped conductive layer away from the substrate, the one or more electrodes are in ohmic contact with the second doped conductive layer. The first doped conductive layer includes a doped amorphous silicon layer or a doped microcrystalline silicon layer.

Abstract: Systems, devices, and methods for time calibration. The method can include, in responses to receiving sensing data which indicates a deviation of a tool from an object to be operated by a robot with the tool, triggering the robot to perform a plurality of transformations. Each transformation causing the tool to contact the object at a reference position; determining joint positions of a joint of the robot holding the tool or the object after the plurality of transformations; and determining a position relationship between the tool and the robot at least partially based on the joint positions and the reference position.

Abstract: Provided is a display substrate, including a base substrate and a plurality of pixel units, the plurality of pixel units includes regular pixel units and redundant pixel units, each regular pixel unit includes at least one constant voltage terminal and at least one dual-gate transistor, each dual-gate transistor includes two gates which are spaced apart, and a part of an active region of the dual-gate transistor, which is located between the two gates, is an intermediate part; the display substrate further includes a plurality of compensation structures, each compensation structure is connected to one constant voltage terminal of the pixel unit, and compensates for the at least one dual-gate transistor of a regular pixel unit; the compensation structure overlaps and is insulated from the intermediate part of the dual-gate transistor for which the compensation structure compensates.

Abstract: Disclosed are a Czochralski single crystal furnace for preparing monocrystalline silicon and a method for preparing monocrystalline silicon using the same. The Czochralski single crystal furnace is switchable between a first operation state and a second operation state. In response to the Czochralski single crystal furnace being switched between the first operation state and the second operation state, a first heat-preserving barrel moves relative to a second heat-preserving barrel. In response to the Czochralski single crystal furnace being in the first operation state, a side wall of the second heat-preserving barrel covers a first opening so as to isolate a reaction chamber from outside Czochralski single crystal furnace. In response to the Czochralski single crystal furnace being in the second operation state, the second heat-preserving barrel exposes the first opening, so that the reaction chamber is connected to the outside through the first opening.

Abstract: A solar cell including: substrate having front and back surfaces, the back surface includes first, second and gap regions, the first and second regions are staggered and spaced from each other in a first direction, and each gap region is provided between adjacent first and second regions, first pyramidal texture structure regions are formed corresponding to gap regions and distance between top and bottom thereof is 2-4 ?m; first conductive layer formed over the first region; second conductive layer formed over the second region, the second conductive layer has conductivity type opposite to the first conductive layer; first electrode forming electrical contact with the first conductive layer; second electrode forming electrical contact with the second conductive layer; and boundary region between the gap region and the first and/or second conductive layer adjacent thereto, and the boundary region includes strip or line patterned texture structures arranged at intervals.

Abstract: A preparation method for improving light efficiency and stability of light storing ceramics is provided. Calcium ethanol solution is added into titanium precursor solution firstly and oleic acid dispersant is added, pure water and the light storing powder are subsequently added to obtain a light-storing powder-calcium titanate gel, and dried, crushed and sieved to obtain xerogel powder. Glass matrix material, sieved xerogel powder and another dispersant are placed into a granulator, and directly mechanically stirred and granulated after adding pure water. A plasticizer is added after stirring 4˜8 h, and continuously stirred for 1˜3 h to obtain a mixture, pressing, drying and firing. Calcium titanate is manually introduced to protect the light-storing powder from hydrolysis or high-temperature oxidation. It can also change the propagation path of fluorescence inside ceramics, improve light absorption and fluorescence output efficiency and is conducive to ceramic molding.

Abstract: Provided is a method for querying questions. The method includes: acquiring input information of a user; acquiring intention information of the user based on the input information of the user; determining an answer generation rule; and generating, based on the input information and the intention information, a first answer in accordance with the answer generation rule, and providing the first answer to the user.

Abstract: This application discloses a cryopump, including a pump housing, a radiation shield in the pump housing, a first-stage cold storage component in the pump housing, a second-stage cold storage component in the holding space of the radiation shield, a connector connecting the first-stage cold storage component and the radiation shield, and a cryopanel assembly in the holding space and connected to the second-stage cold storage component.

Abstract: Provided is a solar cell and a photovoltaic module. The solar cell includes a silicon substrate, and the silicon substrate includes a front surface and a back surface arranged opposite to each other. P-type conductive regions and N-type conductive regions are alternately arranged on the back surface of the silicon substrate. Front surface field regions are located on the front surface of the silicon substrate and spaced from each other. The front surface field regions each corresponds to one of the P-type conductive regions or one of the N-type conductive regions. At least one front passivation layer is located on the front surface of the silicon substrate. At least one back passivation layer is located on surfaces of the P-type conductive regions and N-type conductive regions.

Abstract: A pixel circuit and a driving method therefor, a display substrate, and a display apparatus. The pixel circuit includes a driving sub circuit, a data writing sub circuit, a first light-emitting control sub circuit, a first reset sub circuit, and a bias sub circuit; the first reset sub circuit is connected to a first node and configured to write a first reset voltage to the first node in response to a first reset control signal; and the bias sub circuit is connected to a second node and configured to write a reference voltage to the second node in response to a bias control signal, thereby turning on the driving sub circuit.

Abstract: The tandem cell includes a bottom cell including a substrate. The substrate has a first side and a second side, the first side has a first textured surface including at least one first protrusion structure. The bottom cell further includes a tunneling dielectric layer and a doped conductive layer. A surface of the doped conductive layer has a micro textured surface including at least one micro protrusion structure, and the micro protrusion structure is smaller than the first protrusion structure. The tandem cell further includes a composite layer conformal to the micro textured surface. The tandem cell further includes a top cell formed on the composite layer. The top cell includes a first transport layer, a perovskite substrate, a second transport layer, a transparent conductive layer, and an anti-reflection layer stacked sequentially. The first transport layer is conformal to the micro textured surface.

Abstract: The present disclosure relates to a control method, a stylus, an apparatus, an electronic device, and a storage medium. The control method includes: receiving a key press event sent by a stylus; determining a press type according to the key press event; determining a control operation corresponding to the press type; and performing the control operation; where a different press type corresponds to a different control operation. The control method can realize the remote control operation of the electronic device by means of a key on the stylus, and can realize a diversity of control operations by means of the press type of the key, and furthermore, the control operation is not restricted by an operating system and a projection manner, which can enhance the usage experience of the user.

Abstract: A solar cell includes a semiconductor substrate, in which a rear surface of the semiconductor substrate having non-pyramid-shaped microstructures, the non-pyramid-shaped microstructures include two or more first substructures at least partially stacked on one another, and a one-dimensional size of the surface of the outermost first substructure is less than or equal to 45 ?m; a first passivation layer located on a front surface of the semiconductor substrate; first and second tunnel oxide layers located on the non-pyramid-shaped microstructures; first and second doped conductive layers located on a surface of the first and second tunnel oxide layers, the first and second doped conductive layer has different conductive types; a second passivation layer located on a surface of the first and second doped conductive layers; and electrodes formed by penetrating through the second passivation layer to be in contact with the first and second doped conductive layers.

Abstract: A controlling method for a self-walking apparatus includes: recognizing category information of an obstacle on a travelling path of the self-walking apparatus; acquiring region information of a current location of the obstacle; and controlling, in response to a mismatch between the category information and the region information, the self-walking apparatus to contact the obstacle and perform a push operation for pushing the obstacle into a region matching the category information.

Abstract: A security defending method, a coprocessor, and a processing apparatus are disclosed. The security defending method is applicable in a coprocessor, including: receiving a jump destination encryption request for the operation task; using mask configuration to perform first mask processing on the first jump destination address value to obtain a first intermediate jump destination address value; performing an authentication operation based on the first jump destination storage address, a key reference value corresponding to the operation task and the first intermediate jump destination address value, to obtain a first encryption result value; using the mask configuration to perform second mask processing on the first encryption result value to obtain a first intermediate encryption result value; performing an authentication operation on the first intermediate encryption result value and the first jump destination address value to obtain a first encryption jump destination address value.

Abstract: The present invention relates to the technical field of block chains, and discloses a data security management method, system and storage medium for smart contract based on block chain network, comprising storing information of at least one public key in asymmetric public and private keys synchronously when generating the smart contract; triggering a data management request, establishing block chain network communication, calling the smart contract to generate validation data, rendering timeliness management to the validation data, sending the same to a data management request end and calling at least one private key, signing the validation data, reorganizing the same with data to be managed and making corresponding management operations; data modifications caused by malicious attacks to data in the contract due to disclosure of the contract or other security defects are addressed, safety of data in the chains is efficiently promised and the present invention is of realistic utility value.