Abstract: A modular storage device is provided. The modular storage device includes a housing configured to store a target object and separate the internal space of the housing from the external environment. The sidewall of the housing includes a first air outlet and a first air inlet. The first air outlet is configured to be coupled with an independent drying unit to allow the drying unit to expel the internal air of the internal space. The first air inlet is configured to be coupled with the drying unit to allow the drying unit to introduce external air into the internal space. This modular storage device enables the separation of storage and drying of target objects to accommodate different application scenarios.

Abstract: A filament outlet device for installing on a filament storage device is provided, which includes a first outlet for a first filament having a first diameter; and a first outlet cover, configured to open or close the first outlet; the first outlet cover includes a second outlet for a second filament having a second diameter.

Abstract: A method for controlling a movable object includes determining, based on current location information of an obstacle, whether the obstacle is located within a certain distance range from the movable object, and in response to determining that the obstacle is located within the certain distance range from the movable object: determining, based on the current location information of the obstacle, whether the obstacle meets a first distance criterion or a second distance criterion, to obtain a determination result, and performing a first adjustment or a second adjustment on one or more movement characteristics of the movable object based on the determination result. The first adjustment is different from the second adjustment. One of the first adjustment and the second adjustment includes changing a movement direction of the movable object from a first direction to a second direction. The first direction is opposite to the second direction.

Abstract: This application provides a method for calibrating satellite short message communication charging. In the method, an electronic device sends a target satellite short message to a satellite, performs a pre-fee-deduction operation for a satellite short message service, and updates a first parameter to a first value, where the first parameter is a remaining quota that is of the satellite short message service and that is stored in the electronic device. When the electronic device is connected to a communication network, the electronic device sends the first value to a server. The electronic device receives a first calibration result sent by the server, where the first calibration result indicates whether the first value is consistent with a second value, and the second value is a value of a remaining quota that is stored in the server. The electronic device calibrates the first parameter based on the first calibration result.

Abstract: A movable object for detecting an obstacle includes a first passive infrared sensor having a first detection range and a first field of view, and one or more second passive infrared sensors each having a second detection range and a second field of view. The second detection range is longer than the first detection range and the second field of view is smaller than the first field of view. The movable object further includes one or more processors configured to calculate a distance from the movable object to the obstacle based on data from at least one of the first passive infrared sensor or the one or more second passive infrared sensors, and determine whether to effect a collision avoidance maneuver for the movable object to avoid the obstacle based on the distance.

Abstract: A method includes obtaining a photographed image from a photographing device carried by a movable object, determining a target object in the photographed image to track the target object, determining location estimation information of the target object based on shooting information of the photographing device, and in response to a disappearance of the target object in the photographed image, controlling the photographing device to search for the target object around a location associated with the location estimation information.

Abstract: A method for controlling a movable object includes obtaining current location information of an obstacle while the movable object tracks a target, determining whether the obstacle is located in a reactive region relative to the movable object based on the current location information of the obstacle. In response to determining that the obstacle is located in the reactive region, the method further includes determining, based on the current location information of the obstacle, whether the obstacle is located in a first sub-region or a second sub-region of the reactive region, where an area of the second sub-region is smaller than an area of the first sub-region; in response to determining that the obstacle is located in the first sub-region, reducing an acceleration of the movable object; and in response to determining that the obstacle is located in the second sub-region, reducing a velocity of the movable object.

Abstract: A method for controlling movement of an unmanned aerial vehicle (UAV) includes controlling one or more propulsion units of the UVA to cause the UAV to operate according to a first set of altitude restrictions; assessing, with aid of the one or more processors and based on one or more criteria, whether to control the UAV to operate according to a second set of altitude restrictions; and controlling the one or more propulsion units to cause the UAV to operate according to the second set of altitude restrictions in response to the one or more criteria being fulfilled according to an assessing result. The first set of altitude restrictions constrain an altitude of the UAV relative to a first reference altitude. The second set of altitude restrictions constrain the altitude of the UAV relative to a second reference altitude.

Abstract: The present disclosure discloses a photographing method and an apparatus in, relates to the photographing field and the field of image processing technologies. When multiple people take a group photo, no help from a third party is required. Therefore, implementation is convenient, and user satisfaction with a group photo result can be improved, thereby improving user experience. The method includes: obtaining a first image including an image of a first photographing background and a first to-be-photographed subject; then displaying a first preview interface, the first preview image includes an image of a second photographing background and an image of a second to-be-photographed subject, and a degree of coincidence between the image of the second photographing background and the image of the first photographing background is greater than or equal to a preset degree of coincidence; obtaining a target image based on the first image and the first preview image.

Abstract: A method for controlling target tracking includes determining whether a tracking mode of a movable object is a manual tracking mode or an automatic tracking mode; when it is determined that the tracking mode is the manual tracking mode, determining a target for the movable object from one or more images based on a user input; when it is determined that the tracking mode is the automatic tracking mode, having the movable object determine the target automatically; and directing the movable object to track a target object using the target.

Abstract: Systems, methods, and computer-readable storage devices for obstacle detection may include an exemplary method of obstacle detection by a computing device. The method includes receiving a first dataset indicating a first surrounding with a first perspective; receiving a second dataset indicating a second surrounding with a second perspective; and generating a composite dataset from the first and second datasets. The method additionally includes identifying an obstacle using the composite dataset.

Abstract: A computer-implemented method for controlling a UAV includes identifying a set of target markers based on a plurality of images captured by an imaging device carried by the UAV, and controlling the UAV to fly based on the set of target markers. The set of target markers include at least two or more types of target markers and are in close proximity to be detected within a same field of view of the imaging device. Controlling the UAV to fly includes controlling the UAV to approach the set of target markers based at least in part on a spatial relationship between the UAV and a first type of target marker; and determining whether to control the UAV to land at or near the set of target markers based on information conveyed by a second type of target marker.

Abstract: In accordance with an embodiment. a message processing method applied to a server includes: receiving a first packet sent by a first client, where the first packet includes a receiving object identifier set and a message list, the receiving object identifier set includes an identifier of at least one receiving object, and the message list includes at least one first message; determining, based on the receiving object identifier set, at least one second user that receives the at least one first message; and for any second user of the at least one second user, generating a second packet, and sending the second packet to a second client to which the second user logs in, where the second packet includes an identifier of a receiving object corresponding to the second user and the message list.

Abstract: Systems, methods, and computer-readable storage devices for obstacle detection may include an exemplary method of obstacle detection by a computing device. The method includes receiving a first dataset indicating a first surrounding with a first perspective; receiving a second dataset indicating a second surrounding with a second perspective; and generating a composite dataset from the first and second datasets. The method additionally includes identifying an obstacle using the composite dataset.

Abstract: Disclosed is a displacement correction apparatus. The apparatus comprises: a reference circuit and a correction circuit; the reference circuit is configured to provide a reference signal; the correction circuit is configured to perform a logarithm operation on a nonlinear displacement signal to be corrected based on the reference signal, to obtain a corrected linear displacement signal. The displacement correction apparatus can solve the problem of poor detection accuracy resulting from a position signal output by an eddy current sensor being not in a linear relationship with a displacement signal of a shaft, thereby achieving the effect of improving detection accuracy. A magnetic levitation bearing system and a displacement correction method therefor which use the above displacement correction apparatus are also disclosed.

Abstract: A control method for a mobile platform includes obtaining a captured image, determining a target first characteristic part of a target object from the captured image, determining a second characteristic part of the target object in the captured image, and switching from tracking the second characteristic part to tracking the target first characteristic part in response to a tracking parameter of the target object meeting a preset tracking condition.

Abstract: A method includes obtaining a photographed image from a photographing device carried by a movable object, determining a target object in the photographed image to track the target object, determining location estimation information of the target object based on shooting information of the photographing device, and in response to a disappearance of the target object in the photographed image, controlling the photographing device to search for the target object around a location associated with the location estimation information.

Abstract: A flue gas purification system for hazardous waste incineration and a purification method are provided. The flue gas purification system includes a cooling deacidification coupling device. The cooling deacidification coupling device includes a reaction tower. A top of the reaction tower is installed with a spraying device, an inlet end of the spraying device is connected to a first liquid inlet pipe and a second liquid inlet pipe, the first liquid inlet pipe and the second liquid inlet pipe are configured to transmit a cooling substance and a deacidification substance. The reaction tower is connected to a gas inlet pipe and a gas outlet pipe. A bottom of the reaction tower is connected to an output pipe configured to output substances generated in the reaction tower. The spraying device is configured to mix the cooling substance and the deacidification substance with the flue gas.

Abstract: A power consumption control device includes: a voltage detection circuit configured to detect whether an input power supply of a magnetic levitation system to be controlled is turned off; and a comparison unit configured to detect an operating parameter of a motor of the magnetic levitation system during an operation of the motor as a generator, and compare the operating parameter with a set parameter to obtain a comparison result; a motor controller of the magnetic levitation system controls the motor of the magnetic levitation system to operate as the generator in a case that the input power supply is turned off, a bearing controller of the magnetic levitation system adjusts a magnitude of a bearing bias current of the magnetic levitation system according to the comparison result, to control a power consumption of a magnetic levitation bearing of the magnetic levitation system within a set range.

Abstract: A method of tracking a movement of a target by an unmanned aerial vehicle (UAV), the method includes receiving, from a mobile terminal collocating with the target, absolute location coordinate data of the target, acquiring, by a camera of the UAV, image data of the target, determining, based on the absolute location coordinate data and the image data of the target, 3D location coordinate data of the target with respect to the UAV, and controlling, based on the 3D location coordinate data of the target with respect to the UAV, at least one of a direction or a speed of the movement of the UAV, to maintain a constant relative 3D position of the UAV with respect to the target.