Abstract: Embodiments of the present disclosure relate to an arm assembly and an unmanned aerial vehicle thereof. The arm assembly includes: an arm support; an arm, where the arm is movably connected to the arm support, and is rotatable in a first direction and an opposite second direction; a locking member, where the locking member is disposed in the arm support, and is capable of abutting against or separating from the arm; and a connecting rod, where the connecting rod is connected between the locking member and the arm support, to associate rotation of the connecting rod with reciprocation of the locking member, when the locking member abuts against the arm, rotation of the arm in the first direction is capable of being restricted; and the locking member is separable from the arm driven by the rotation of the connecting rod, to release the restriction on the rotation of the arm.

Abstract: Embodiments of the present disclosure relate to the field of unmanned aerial vehicle technologies, and disclose a heat dissipation structure and an unmanned aerial vehicle including same. The heat dissipation structure includes: a first structure body, where a heat dissipation channel is provided in the first structure body for a cooling medium to flow through; and a second structure body, where the second structure body is arranged in the heat dissipation channel, and configured to divide the heat dissipation channel to form at least two channel branches, where a sealed cavity configured to accommodate a heating device is provided in the second structure body. Through a design of heat dissipation channel branches arranged in a cascading manner, a required sealed space can be formed conveniently between channel branches, providing sufficient sealing to satisfy requirements of components for waterproofing/dustproofing.

Abstract: The embodiments of the present disclosure disclose an aircraft, including a housing, a first drive module, a first antenna module, a second drive module, a third drive module and a fourth drive module. The first drive module includes a first arm and a first drive assembly, one end of the first arm is arranged on the housing, and the first drive assembly is arranged at the other end of the first arm; the first antenna module is arranged at the other end of the first arm, and the first antenna module is located above the first drive assembly; and the second drive module includes a second arm and a second drive assembly, one end of the second arm is arranged on the housing, and the second drive assembly is arranged at the other end of the second arm.

Abstract: A mobile station operable to perform cell synchronization is described. The mobile station can process one or more synchronization signals received in a downlink from one or more base stations providing coverage in one or more cells. The mobile station can process the one or more synchronization signals received from the one or more base stations to synchronize the mobile station with the one or more base stations. The mobile station can adjust signals for communication from the mobile station in accordance with the cell synchronization performed at the mobile station.

Abstract: The present invention discloses an environment maintenance system and method for precision production, which mainly includes a transport cassette and a manufacturing procedure processing device. The transport cassette is provided with a first environment maintenance device to maintain a positive pressure environment; the manufacturing procedure processing device is provided with a second environment maintenance device to maintain a positive pressure environment and a constant temperature/humidity environment. When the transport cassette is combined with the manufacturing procedure processing device, a receiving space of the transport cassette can be exposed to a working space of the manufacturing procedure processing device, and you can take out the product to be processed and place it in the manufacturing procedure processing device for processing, therefore, whether it is in storage, handling or in the production process, the cleanliness of the product can be effectively improved.

Abstract: A method for maintaining the connection between a terminal and a network server is described. The terminal has a first processing unit with a first state and a second state, wherein the power consumption of the second state is less than the power consumption of the first state. When the first processing unit is in the second state, the terminal or the network server sends heartbeat data packets periodically in order to maintain the connection between said terminal and said network server. During the period that the terminal or the network server sends a periodic heartbeat data packet, a main processor of the terminal will not be woken up Thus, the terminal in a sleep state can maintain connection with the network server, and not be woken up due to the heartbeat data packets sent by the network server, which reduces the power consumption of the terminal.

Abstract: A mobile terminal and an operation mode switching method for a mobile terminal communication system are provided, the mobile terminal comprising at least a communication processor, wherein an operation mode in which the communication processor performs only a communication function is defined as a communication mode and an operation mode in which the communication processor performs both the communication function and an application function is defined as an application mode, the method comprising the following steps of acquiring, in the application mode, switching trigger information; and controlling the communication processor to switch from the application mode to the communication mode based on the switching trigger information. Also, in the communication mode, the system can also acquire switching information and switch from the communication mode to the application mode.

Abstract: A method for maintaining the connection between a terminal and a network server is described. The terminal has a first processing unit with a first state and a second state, wherein the power consumption of the second state is less than the power consumption of the first state. When the first processing unit is in the second state, the terminal or the network server sends heartbeat data packets periodically in order to maintain the connection between said terminal and said network server. During the period that the terminal or the network server sends a periodic heartbeat data packet, a main processor of the terminal will not be woken up Thus, the terminal in a sleep state can maintain connection with the network server, and not be woken up due to the heartbeat data packets sent by the network server, which reduces the power consumption of the terminal.

Abstract: A mobile terminal and an operation mode switching method for a mobile terminal communication system are provided, the mobile terminal comprising at least a communication processor, wherein an operation mode in which the communication processor performs only a communication function is defined as a communication mode and an operation mode in which the communication processor performs both the communication function and an application function is defined as an application mode, the method comprising the following steps of acquiring, in the application mode, switching trigger information; and controlling the communication processor to switch from the application mode to the communication mode based on the switching trigger information. Also, in the communication mode, the system can also acquire switching information and switch from the communication mode to the application mode.