Abstract: An aircraft system includes an aircraft, which further includes at least one propeller to provide a flight power for the aircraft; a communication interface configured to communicate with a parachute; at least one storage medium, storing at least one set of instructions for controlling the aircraft system; and at least one processor in communication with the at least one memory. when the aircraft system is in operation, the at least processor executes the at least one set of instruction to: obtain a propeller locking instruction of the aircraft, and perform a corresponding operation based on the propeller locking instruction. The corresponding operation include a first operation. The first operation, corresponds to a scenario where the aircraft is in a flight state, includes: in response to the propeller locking instruction, the aircraft controlling the at least one propeller to stop and locking the at least one propeller, and deploying the parachute by the aircraft.

Abstract: A test system and a test method for a lip sticking force of tipping paper for cigarettes are provided. The test system includes an artificial lip and test equipment. The artificial lip is a silica gel block. The test equipment includes a friction meter testing platform, a force measuring sensor, a rigid rope, a pulley, a pulley bracket and a sample loading module. The pulley is installed on the pulley bracket, and the rigid rope slides in the pulley. The rigid rope is L-shaped, a first end of the rigid rope in a horizontal direction is connected to the force measuring sensor, and a second end of the rigid rope in a vertical direction is connected to the sample loading module. The artificial lip is located directly below the sample loading module, and the artificial lip is in contact with the sample loading module at a test position.

Abstract: The invention discloses a powder leakage monitoring device and a powder leakage monitoring method. The powder leakage monitoring device comprises light field camera, 3D PTZ (3-Dimensional Pan/Tilt/Zoom) and computer. Wherein, the light field camera records original light field images of monitored area; the 3D PTZ under the light field camera adjusts the shooting angle of the light field camera when it rotates according to the set direction; and the computer respectively connects to the light field camera and the 3D PTZ, which generates refocused images corresponding to the original light field images, and determines the spatial coordinates of the powder leakage point and the hazard range of the powder leakage in the monitored area according to the refocused images and the shooting angle. Therefore, the range and accuracy of powder leakage monitoring are both increased by using this invention.

Abstract: A system and method for managing and controlling power of base station when a connectable terminal device is moving at speed through the coverage area of the base station, the method obtains a transmission power from a terminal through the base station; obtains location of the terminal, and generates a transmission power conversion table according to the terminal transmission power and the terminal location. The transmission power conversion table is transmitted to the terminal by the base station, the transmission power being used by the terminal according to the transmission power conversion table, avoiding repeated communications and electrical energy cost between base station and terminal in respect of the changing location of the terminal.

Abstract: A pressure-preserving conventional triaxial compression loading apparatus of the present invention includes a pressure vessel, an upper piston rod, a lower piston rod, and an annular oil bag assembly. Hollow chambers of the pressure vessel in vertical communication sequentially include an upper chamber, an upper sealed chamber, a confining pressure chamber, a lower sealed chamber, and a lower chamber from top to bottom. The annular oil bag assembly is placed in the confining pressure chamber. When an annular inner chamber of an annular oil bag is filled with medium, an outer wall of the annular oil bag and an inner wall of the confining pressure chamber are attached together. A fidelity specimen is placed in a specimen chamber defined by a lower end surface of the upper piston rod, an upper end surface of the lower piston rod, and an inner wall of the annular oil bag. A variety of measuring sensors are disposed in the annular inner chamber of the annular oil bag.

Abstract: A system and method for managing and controlling power of base station when a connectable terminal device is moving at speed through the coverage area of the base station, the method obtains a transmission power from a terminal through the base station; obtains location of the terminal, and generates a transmission power conversion table according to the terminal transmission power and the terminal location. The transmission power conversion table is transmitted to the terminal by the base station, the transmission power being used by the terminal according to the transmission power conversion table, avoiding repeated communications and electrical energy cost between base station and terminal in respect of the changing location of the terminal.

Abstract: A pressure-preserving conventional triaxial compression loading apparatus of the present invention includes a pressure vessel, an upper piston rod, a lower piston rod, and an annular oil bag assembly. Hollow chambers of the pressure vessel in vertical communication sequentially include an upper chamber, an upper sealed chamber, a confining pressure chamber, a lower sealed chamber, and a lower chamber from top to bottom. The annular oil bag assembly is placed in the confining pressure chamber. When an annular inner chamber of an annular oil bag is filled with medium, an outer wall of the annular oil bag and an inner wall of the confining pressure chamber are attached together. A fidelity specimen is placed in a specimen chamber defined by a lower end surface of the upper piston rod, an upper end surface of the lower piston rod, and an inner wall of the annular oil bag. A variety of measuring sensors are disposed in the annular inner chamber of the annular oil bag.