Abstract: The present disclosure provides an unmanned aerial vehicle (UAV) flight height control method and apparatus, an electronic device, and a storage medium, and pertains to the field of agricultural technologies. The method includes: obtaining crop lodging information of a crop lodging area beneath a UAV during a flight; inputting the crop lodging information into a UAV flight height prediction model to obtain a target flight height output by the UAV flight height prediction model, where the UAV flight height prediction model is obtained by training a deep neural network model based on a crop lodging information sample and a UAV flight height label corresponding to the crop lodging information sample; and controlling the UAV to fly at the target flight height.

Abstract: An atomizer for aerial spraying and a control method thereof are provided and relate to the technical field of agricultural machinery. The atomizer for aerial spraying includes a rotary cage atomizer, a deflection mechanical arm, a transmission assembly, and a driving assembly. The rotary cage atomizer is connected to the deflection mechanical arm via a first adapter, the deflection mechanical arm is connected to the transmission assembly, the driving assembly drives the transmission assembly, so as to drive the deflection mechanical arm to adjust an angle, the angle of the rotary cage atomizer changes along with the change of the angle of the deflection mechanical arm, and a brushless motor is used to adjust the rotation speed of the rotary cage atomizer. The rotary cage atomizer is provided with a primary atomizing valve core and a secondary atomizing rotary cage.

Abstract: Provided are a nozzle device for a plant protection unmanned aerial vehicle and a droplet diameter control method thereof. The nozzle device for a plant protection unmanned aerial vehicle includes a flexible nozzle body, a magnetostrictive sleeve, and a coil. The flexible nozzle body is provided with a nozzle exit, a periphery of the flexible nozzle body is provided with a guide surface at a position corresponding to the nozzle exit, the magnetostrictive sleeve is sleeved on the periphery of the flexible nozzle body and abutted against the guide surface. The coil is wound around the periphery of the magnetostrictive sleeve. When the coil is supplied with a current to generate a magnetic field, the magnetostrictive sleeve can move relative to the guide surface, the guide surface squeezes the nozzle exit to deform the nozzle exit, thus adjusting the size of the nozzle exit.

Abstract: Provided are a nozzle device for a plant protection unmanned aerial vehicle and a droplet diameter control method thereof. The nozzle device for a plant protection unmanned aerial vehicle includes a flexible nozzle body, a magnetostrictive sleeve, and a coil. The flexible nozzle body is provided with a nozzle exit, a periphery of the flexible nozzle body is provided with a guide surface at a position corresponding to the nozzle exit, the magnetostrictive sleeve is sleeved on the periphery of the flexible nozzle body and abutted against the guide surface. The coil is wound around the periphery of the magnetostrictive sleeve. When the coil is supplied with a current to generate a magnetic field, the magnetostrictive sleeve can move relative to the guide surface, the guide surface squeezes the nozzle exit to deform the nozzle exit, thus adjusting the size of the nozzle exit.

Abstract: The present disclosure relates to a virtual character control method and apparatus, a device and a storage medium. In the present disclosure, one or more target keywords are acquired from a preset text, and a first target character and a second target character are determined from the preset text for each of the one or more target keywords. Further, an audio broadcasting duration from the first target character to the second target character is predicted, and a target action file is determined from one or more preset action files corresponding to the target keyword according to the audio broadcasting duration, so that a time duration of the target action video matches the audio broadcasting duration, where the target action video is obtained by driving, according to the target action file, the virtual character to perform a target action.

Abstract: A system and a method for evaluating atomization efficiency of a wind-driven atomizer. The system for evaluating atomization efficiency of a wind-driven atomizer comprises a detection platform, a wind tunnel mechanism and a traction measurement mechanism are arranged above the detection platform, the traction measurement mechanism is disposed beside the wind outlet end of the wind tunnel mechanism, an atomizer mechanism and an atomization measurement mechanism are sequentially disposed on the detection platform along the direction of a wind field provided by the wind tunnel mechanism, and the atomizer mechanism is connected with the traction measurement mechanism. The system and the method may effectively evaluate the atomization efficiency and provide quantitative evaluation indicators for the detection of working performance of the wind-driven atomizer, and has the advantages of convenient operation, accurate detection, precise measurement results, and high reliability of evaluation indicators.

Abstract: A reservoir simulation platform is provided. The reservoir simulation platform includes a mimetic finite discretization scheme and an operator-based linearization approach. The reservoir simulation system further includes a parallel framework for coupling the mimetic finite discretization scheme and the operator-based linearization approach.

Abstract: A wrapping method and device, a registration method and device, and a rendering apparatus are provided, which are related to a field of computer display technology. The specific implementation includes: receiving a creation instruction from a registry component, wherein the creation instruction includes an identification of a wrapper object to be registered, in a target code; and creating a corresponding wrapper object in the wrapper module, according to the identification of the wrapper object to be registered in the target code. In embodiments of the present application, a wrapper object may be quickly created in a wrapper module according to an identification of a wrapper object to be registered in a target code, which is beneficial to a reuse of a wrapper object, thereby improving code execution efficiency.

Abstract: A system and a method for evaluating atomization efficiency of a wind-driven atomizer. The system for evaluating atomization efficiency of a wind-driven atomizer comprises a detection platform, a wind tunnel mechanism and a traction measurement mechanism are arranged above the detection platform, the traction measurement mechanism is disposed beside the wind outlet end of the wind tunnel mechanism, an atomizer mechanism and an atomization measurement mechanism are sequentially disposed on the detection platform along the direction of a wind field provided by the wind tunnel mechanism, and the atomizer mechanism is connected with the traction measurement mechanism. The system and the method may effectively evaluate the atomization efficiency and provide quantitative evaluation indicators for the detection of working performance of the wind-driven atomizer, and has the advantages of convenient operation, accurate detection, precise measurement results, and high reliability of evaluation indicators.

Abstract: A wrapping method and device, a registration method and device, and a rendering apparatus are provided, which are related to a field of computer display technology. The specific implementation includes: receiving a creation instruction from a registry component, wherein the creation instruction includes an identification of a wrapper object to be registered, in a target code; and creating a corresponding wrapper object in the wrapper module, according to the identification of the wrapper object to be registered in the target code. In embodiments of the present application, a wrapper object may be quickly created in a wrapper module according to an identification of a wrapper object to be registered in a target code, which is beneficial to a reuse of a wrapper object, thereby improving code execution efficiency.