Sz Dji Technology Co., Ltd.

Tencent Technology (shenzhen) Company Limited

Xiaolong Wu

Xumin Wu

Jiyuan Ao

Zhuang Feng

Sungki Lee

Shimeng Bei

Chuoying Lu

Le Zhou

Bo Liang

Qiang Yu

Lei Deng

Li Qiu

Yijun Guan

Zhan Shu

Chaofan Guo

Zhiliang Jin

This application provides methods, apparatus, electronic devices, and computer-readable storage medium for archiving blockchain data. One method includes synchronizing, by a first committing node, blockchain data with a consensus node, and determining a synchronization block height of the synchronized blockchain data, the synchronized blockchain data comprising state data; determining target state data required by a current transaction in the state data, and backing up the target state data; generating a state data snapshot of the synchronization block height according to the backed-up target state data, and transmitting the state data snapshot, the synchronization block height, and signature information of the first committing node to a second committing node as archiving point information; receiving endorsement information of the second committing node for the archiving point information; and archiving the synchronized blockchain data according to the endorsement information and the archiving point information.

Blockchain data archiving method, apparatus, and computer-readable storage medium

A spray-head assembly includes a pipe structure and a valve-spool. The pipe structure includes a liquid inlet, a flow pathway, and a valve-port. The flow pathway includes an air-flow pathway arranged obliquely with respect to a central axis of the liquid inlet. A bottom end of the air-flow pathway communicates with the liquid inlet. The valve-port is arranged at a top end of the air-flow pathway. The valve-spool is arranged in the flow pathway and configured to control opening and closing of the valve-port.

Spray-head assembly and spray-head apparatus

An avionics system for an unmanned aerial vehicle (UAV) includes a housing having a mounting hole, a flight control circuit board arranged inside the housing, a wireless communication circuit board integrated with the flight control circuit board on a printed circuit board (PCB), a positioning circuit arranged inside the housing and above or below the PCB, and a connection wire passing through the mounting hole and connecting the flight control circuit board with an electronic governor of the UAV arranged outside the housing.

Unmanned aerial vehicle and avionics system thereof

Aerial vehicle

An unmanned aerial vehicle (UAV) includes a central body, a plurality of arms extending out from the central body and in fluid communication with the central body, and a plurality of propulsion units. The plurality of arms are configured to route fluid away from the central body of the UAV. Each propulsion unit attached to a corresponding arm of the plurality of arms.

Systems and methods for foldable arms

An agricultural unmanned aerial vehicle (UAV) includes a fuselage, a flight power apparatus, a plurality of spray nozzles, a plurality of water pumps, and a controller. The flight power apparatus is mounted at the fuselage. The plurality of spray nozzles are installed below the flight power apparatus. The plurality of water pumps are connected to the plurality of spray nozzles and configured to deliver liquid to the spray nozzles. The controller is electrically coupled to the plurality of water pumps, and configured to selectively control one or more of the plurality of water pumps to pump the liquid to one or more of the spray nozzles connected to the one or more of the water pumps.

Agricultural unmanned aerial vehicle

A system and kit for dissipating heat generated by a motor assembly and methods for manufacturing and using same. The motor assembly includes a housing that defines an internal chamber. The internal chamber communicates with an air inlet and an air outlet each being formed in the housing, and can at least partially receive motor inner workings. A pump assembly can be included in the internal chamber for generating an air flow during operation of the motor assembly. The pump assembly can draw air into the internal chamber via the air inlet, generating an air flow within the internal chamber. The air drawn into the internal chamber is applied to the motor inner workings, and the air heated by the motor inner workings is expelled from the internal chamber via the air outlet. Thereby, the air flow advantageously can cool the motor assembly as the air traverses the internal chamber.

System, kit, and method for dissipating heat generated by a motor assembly

An apparatus and kit for assembling a mobile platform and methods for making and using the same. When associated with a mobile platform, a power device can be installed outside a control device coupled with the mobile platform. The power device can be located outside a housing enclosing the mobile platform and exposed to an external operating environment of the mobile platform. Heat generated by the power device can be dissipated without installation of additional cooling equipment. The power device and the control device can thus have lower operating temperatures and longer lifetimes. The power device can be installed on a module associated with the mobile platform for further improving heat dissipation of the power device. The module optionally can function as a shock absorber for preventing damage to the power device in case the mobile platform is involved in a crash.

Method, apparatus, and kit for assembling a mobile platform

A prompting device for prompting state information of a physical game character includes a smog machine and a control circuit. The smog machine include a smog chamber, a heating element, and an air-blowing device. The smog chamber has a receiving cavity for receiving smog fluid, an inlet, and an outlet. The inlet and the outlet are in communication with the receiving cavity. The heating element is mounted within the receiving cavity and generates heat to vaporize the smog fluid after an electric current is applied. The air-blowing device is disposed corresponding to the outlet for blowing an air flow towards the receiving cavity. The air flow generated by the air-blowing device enters into the receiving cavity from the inlet and discharges smog within the receiving cavity from outlet. The control circuit is configured to control the smog machine to generate the smog that characterizes the state information.

Smog machine, method and apparatus for prompting state information of a physical game character, and remote-control fighting vehicle

An unmanned aerial vehicle (UAV) includes a central body, a plurality of arms extending out from the central body, and a plurality of propulsion units. Each of the plurality of arms includes a stem portion, one or more branch portions, and a joint connecting the stem portion with the one or more branch portions. The joint includes a sleeve configured to lock a position of one of the one or more branch portions relative to the stem portion. Each of the propulsion units is attached to one of the one or more branch portions of one of the plurality of arms.

Systems and methods can control a pumping system. Operating characteristics of a driving apparatus are obtained. The driving apparatus is operatively coupled to a pump and operates to effect operation of the pump. Additionally, instructions are provided to an electronic speed controller. In particular, the instructions direct the electronic speed controller to control activity of the driving apparatus.

Brushless pump motor system

An unmanned aerial vehicle (UAV) comprises a central body, a plurality of arms that extend out from the central body, and a plurality of rotors. Each arm has one or more joints that segment the arm into a stem portion proximal to the central body and one or more branch portions distal to the central body. The one or more joints permit the one or more branch portions to move horizontally relative to the stem portion between an extended state and a compacted state. The one or more branch portions are arranged substantially parallel to a perimeter edge of the central body in the compacted state. Each rotor in the plurality is attached to the one or more branch portions.

Systems and methods are provided for transformation of a UAV from an extended state to a compacted state. The UAV can be transported in the compacted state. The UAV can comprise one or more segmented arms that can be folded to reduce the volume of the UAV. The segmented arms can be sealed to prevent ambient air, dirt, and or water vapor from entering the segmented arm. The UAV can comprise a cooling and air filtering system on-board the UAV.

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Shenzhen, China

Xiaolong Wu