Abstract: The present disclosure provides a compensation device, a display screen, a display device, and a compensation method. The compensation device includes a detection circuit and a processor. The detection circuit includes a resistance-sensitive element provided in a deformation area of the display screen. A resistance of the resistance-sensitive element changes when the resistance-sensitive element is deformed. The detection circuit is configured to detect a resistance change amount of the resistance-sensitive element. The processor is configured to obtain a drift amount of a characteristic curve of a driving transistor in the deformation area according to the resistance change amount, and adjust a driving voltage signal output to the driving transistor according to the drift amount.

Abstract: A display device includes: a display panel; and a polarizer, an optical adhesive, and a cover plate sequentially arranged on the display panel. The display panel has a transparent region. The polarizer has first and second surfaces parallel to each other, and the first surface is proximal to the display panel. The polarizer has therein a through hole penetrating through the first and second surfaces. The through hole has first and second boundaries at the first and second surfaces, respectively. An orthogonal projection of the first boundary on the second surface is inside and not in contact with the second boundary. For third and fourth boundaries of the through hole parallel to the first boundary, an orthogonal projection of the third boundary on the fourth boundary does not extend beyond the fourth boundary, the third boundary being closer to the first boundary than the fourth boundary.

Abstract: Provided are a training method and apparatus for a target detection model, a device and a storage medium. The training method is described below. A feature map of a sample image is processed through a classification network of an initial model and a heat map and a classification prediction result of the feature map are obtained, a classification loss value is determined according to the classification prediction result and classification supervision data of the sample image, and a category probability of pixels in the feature map is determined according to the heat map of the feature map and a probability distribution map of the feature map is obtained; the feature map is processed through a regression network of the initial model and a regression prediction result is obtained, and a regression loss value is determined.

Abstract: A mechanical energy-based self-powering counting system is provided. The system includes an electromagnetic power generator, a count measuring circuit, a count energy supply circuit, a controller and a wireless transmission module. The electromagnetic power generator is driven by an external device and produces an electric signal and outputs the electric signal to the controller after passing it through the count measuring circuit. The controller processes the received signal, updates a count according to certain programming rules and sends data to the wireless transmission module. The energy from the electromagnetic power generator flowing through the count measuring circuit can supply power to the controller. An energy storage module in the count energy supply circuit performs voltage feedback on the controller. The controller monitors the voltage of the energy storage module to control whether it enters a charging state.

Abstract: The disclosure provides a method for detecting a change of a building, an apparatus for detecting a change of a building, an electronic device, a storage medium and a computer program product. The method includes: obtaining a remote-sensing image sequence of a to-be-detected region; obtaining a building probability map corresponding to each remote-sensing image in the remote-sensing image sequence; determining a sub-region located by each building in the to-be-detected region based on the building probability map corresponding to each remote-sensing image; for each building, determining an existence probability of the building in each remote-sensing image based on the sub-region located by the building and the building probability map corresponding to each remote-sensing image; and determining a change condition of the building based on the existence probability of the building in each remote-sensing image.

Abstract: The present application provides a gas alarm replacement warning method and device, and an electronic apparatus including the device. The method is applied to a gas alarm including a gas-sensitive element. The method includes: collecting signal data of the gas alarm; analyzing the current use state of the gas alarm based on the signal data; determining a dynamic model of the expected service life of the gas alarm according to the current use state, and calculating the expected use duration of the gas alarm; determining whether the actual use duration of the gas alarm is greater than the expected use duration; and if so, outputting a replacement prompt signal. Therefore, based on the expected service life of the gas alarm, when the use duration of the gas alarm approaches the expected service life, a replacement prompt signal is issued to solve the problem of untimely replacement of the gas alarm and ensure the safety of indoor gas use.

Abstract: A multi-nozzle concurrent printing system includes a plurality of extrusion type nozzle assemblies, a three-axial translation mechanism and an objective table. Each nozzle assembly is provided with a nozzle, a storage barrel and a temperature control module; the three-axial translation mechanism includes an X-axial translation unit, a Y-axial translation unit and a Z-axial translation unit, and the nozzle assemblies are mounted on the Z-axial translation unit; and there are a plurality of nozzle assemblies, the printing system is provided with a concurrent calibration sensor, and the concurrent calibration sensor is taken as an original point of a coordinate system of the printing system. The printing system is provided with the plurality of nozzle assemblies which can work cooperatively or sequentially, the printing mode is flexible and changeable, and non-uniform mixing system forming of materials can be realized; and stable output of the materials in a formal printing task is guaranteed.

Abstract: A data transmission method comprises: receiving and storing image data, wherein the image data comprises first data and second data, the first data is encrypted verification data, and the second data is original data; comparing the first data with the second data in stored image data; replacing the second data with the first data, if the second data and the first data are inconsistent.

Abstract: Provided is a hybrid power system, which is composed of an engine (10) and a motor (20). A motor stator (20) of the motor is connected with a drive shaft (40) of a motor vehicle through a transmission mechanism, so that the motor stator can also rotate relative to the chassis and other structures of the motor vehicle, thus, the hybrid power system composed of the engine and the motor can meet the application of various working conditions such as starting, idling, forwarding and reversing of the motor vehicle, and the number of parts of the hybrid system is greatly reduced, thereby simplifying the overall structure of the hybrid power system.

Abstract: Described herein is a fast and high-fidelity fault model of PMSM which can describe the dynamic performance of motors accurately, using an equivalent resistance simulation method to simulate the number of short turns of stator winding with the help of an established motor model and the given relationship between the value of the resistance and the number of short turns of stator winding, fault diagnosis and prognosis of the experimental motor is conducted based on the Hilbert transform method under a Riemann/Lebesgue sampling framework, which results in low computation and small uncertainty accumulation.

Abstract: The present disclosure provides a chip fault diagnosis method, which includes: determining an interrupt flag of an interrupt flag register based on first data identifying an interrupt state in the interrupt flag register; and determining a fault state of chip interrupt corresponding to the interrupt flag based on the interrupt flag. By adopting the technical solution provided by the present disclosure, a fault of the interrupt can be diagnosed in time, and the interrupt can be processed in time.

Abstract: A control method and a control system are provided. A valve closing position of a valve device can be controlled according to the current flow direction or working mode of a refrigerant. A stroke of the valve device from a fully-opened position to a fully-closed position is defined as a total valve closing stroke. When the flow direction of the refrigerant is a forward direction, the valve device is controlled to operate at a first valve closing position, and when the flow direction of the refrigerant is a reverse direction, the valve device is controlled to operate at a second valve closing position. The first valve closing position is different from the second valve closing position, such that wear caused by valve closing can be reduced.

Abstract: The present invention provides a 3D printing method for a complex curved hollow structure. The 3D printing method comprises the following steps: firstly, manufacturing a bottom die attached with the complex curved hollow structure, and molding the complex curved hollow structure on a molding surface C of the bottom die by taking the bottom die as a support, wherein the molding of the bottom die and the molding of the complex curved hollow structure are completed in the same world coordinate system, and the bottom die does not need to be taken down from an objective table and then transplanted into a printing system of a to-be-molded part. The 3D printing method has the advantage that a high-precision complex curved hollow structure can be manufactured.

Abstract: The present application provides a gate driving unit circuit and a method of driving the same, a gate driving circuit and a display apparatus. The gate driving unit circuit includes a shift register and a plurality of driving signal output sub-circuits. Each driving signal output sub-circuit corresponds to one of gate lines on an array substrate, is coupled to a first power supply terminal and a signal output terminal of the shift register, and also coupled to a corresponding one of driving scan signal lines. Each driving signal output sub-circuit is configured to output, under the control of a signal output by the signal output terminal of the shift register, a driving scan signal provided by the corresponding driving scan signal line or an OFF voltage provided by the first power supply terminal to the corresponding gate line.

Abstract: A dual-torque hinge mechanism includes a rotary shaft, a second bridging component, a resistance assembly, a torque generating component and a driving assembly. The second bridging component is rotatably disposed on the rotary shaft. The resistance assembly is disposed on the rotary shaft and coupled to second bridging component. The torque generating component is coupled to the rotary shaft. The driving assembly is disposed between the resistance assembly and the torque generating component.

Abstract: The present disclosure relates to the technical field of wheat planting, and in particular to a uniform monoseeding and cultivation method of winter wheat in Huang-huai-hai region. The cultivation method includes seedbed finishing and precision seeding; after seedbed finishing during winter wheat seeding creates excellent seedbed conditions, precision monoseeding of winter wheat is implemented by a seeder according to precise agronomic index requirements including plant spacing, row spacing, seeding depth, and seeding rate, concurrently achieving the objectives of consistent covering depth and deep placement of bottom fertilizer. The cultivation method can make the most of light, heat, water, and fertilizer resources, and precisely optimize the plant spacing, row spacing, and seeding depth during seeding to integrate mechanized seeding management of winter wheat in Huang-huai-hai region, achieving objectives of building excellent crop community and increasing yield and efficiency.