Abstract: The present disclosure relates to a liquid-cooling radiating pipe and a vacuum interrupter with a built-in liquid-cooling radiating pipe, belonging to the field of vacuum circuit breakers. Based on an original structure of an vacuum interrupter, a liquid-cooling radiating pipe of a Tesla valve structure is arranged in a conductive rod of the vacuum interrupter with the built-in liquid-cooling radiating pipe, and liquid metal is used as a circulating coolant in the liquid-cooling radiating pipe, and by using the self-circulating flow of the liquid metal in the pipeline, the capacity of the conductive rod to dissipate heat to the outside is significantly increased, and the problem of excessive internal temperature rise of a vacuum circuit breaker is effectively solved.

Abstract: A display panel and a driving method thereof are provided. The driving method includes: acquiring a display synchronization signal, and according to it to determine a first backlight synchronization signal including a plurality of second pulses corresponding to a plurality of first pulses in the display synchronization signal; acquiring a display setting frequency greater than a minimum value of refresh rates of frame images, and according to it to determine a unit backlight clock signal, where a duration of the unit backlight clock signal is equal to of a reciprocal of the display setting frequency; and generating a third pulse between some two adjacent second pulses to drive a backlight plate to emit light.

Abstract: A high aspect ratio in-plane metal microneedle array, a manufacturing method and a clamping and inserting auxiliary device thereof is disclosed. A large-size metal sheet is cut into small metal sheets. A clamping tooling composed of two upper and lower metal cover plates is processed. Inner sides of the upper and the lower cover plates of the tooling are provided with grooves in which the metal sheets are placed and fastened by bolts. Wire cutting is conducted on the tooling and the metal sheets as a whole to obtain a plane metal microneedle array with a plurality of microneedle bodies. In addition, an assembling and clamping device and an inserting auxiliary device of the high aspect ratio in-plane metal microneedle array is provided. The assembled inserting auxiliary device is placed on skin, and the microneedle array is inserted into the skin through the auxiliary device.

Abstract: Provided is a device and a method for route planning. The route planning device (100) may include a data interface (128) coupled to a road and traffic data source (160); a user interface (170) configured to display a map and receive a route planning request from a user, the route planning request including a line of interest on the map; a processor (110) coupled to the data interface (128) and the user interface (170). The processor (110) may be configured to identify the line of interest in response to the route planning request; acquire, via the data interface (128), road and traffic information associated with the line of interest from the road and traffic data source (160); and calculate, based on the acquired road and traffic information, a navigation route that matches or corresponds to the line of interest and meets or satisfies predefined road and traffic constraints.

Abstract: A personalized scene image processing method is provided for a terminal device. The method includes acquiring, according to a touch event triggered in a screen region of the terminal device, a trajectory of the touch event in the screen region; generating a virtual model, according to a projection of the trajectory of the touch event in a space coordinate system; reconstructing a model view of the virtual model mapped within a field of view of the terminal device, according to a position and posture of the terminal device in the space coordinate system; and overlaying a scene image acquired by the terminal device in the position and posture with the model view to obtain a personalized scene image.

Abstract: A textured surface of oil and gas equipment includes a first substrate, an antiwear coating, and a second substrate, and further includes a texture, where the texture includes a first texture and/or a second texture; the first substrate and the second substrate are capable of moving relative to each other when operating, the first texture is arranged on a surface of the first substrate that is in contact with the antiwear coating, the second texture is arranged on a surface of the antiwear coating that is in contact with the second substrate. A method for machining the textured surface of oil and gas equipment is provided, which improves various performances of the oil and gas equipment such as antifriction, wear resistance, and corrosion resistance by combining a coating with a texture, so as to prolong the service life of the oil and gas equipment, increase oil and gas production efficiency.

Abstract: A cooperative fuzzy-neural control method is designed in this present invention. Due to the difficulty for cooperatively controlling the concentrations of the dissolved oxygen and nitrate nitrogen in wastewater treatment process, a cooperative fuzzy-neural control method is investigated. In this proposed method, firstly, a interval type-2 fuzzy neural network is employed to construct the cooperative fuzzy-neural controller. Secondly, a parameter cooperative strategy is proposed to cooperatively optimize the global and local parameters of the cooperative fuzzy-neural controller to meet the control requirements. This proposed cooperative fuzzy-neural control method can cooperatively control the concentrations of the dissolved oxygen and nitrate nitrogen in wastewater treatment process. The results illustrate that the proposed cooperative fuzzy-neural control method can achieve the high control accuracy and guarantee the normal operations of wastewater treatment process under the different operation conditions.

Abstract: A forced separation device includes a transmission shaft, a main shaft, an electromagnetic transmission mechanism, a blasting separation mechanism and a pressure-resistant cabin. A pressing cover is fastened to the upper portion of the pressure-resistant cabin. The electromagnetic transmission mechanism is provided with a driving chuck and a driven chuck. The driving chuck is connected with the transmission shaft, the driven chuck is connected with the main shaft, the pressing cover is welded with the transmission shaft, and the driven chuck is welded with the lower portion of the pressure-resistant cabin. The blasting separation mechanism is provided with explosive packages and detonators. A plurality of explosive packages are distributed between the pressing cover and the top surface of the pressure-resistant cabin, and each explosive package is connected with the corresponding detonator respectively. The pressure-resistant cabin is further internally provided with a storage battery.

Abstract: This application provides methods, apparatus, electronic devices, and computer-readable storage medium for archiving blockchain data.

Abstract: 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.

Abstract: 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.

Abstract: A hierarchical model predictive control (HMPC) method based on fuzzy neural network for wastewater treatment process (WWTP) is designed to realize hierarchical control of dissolved oxygen (DO) concentration and nitrate nitrogen concentration. In view of the difference of time scales in WWTP, it is difficult to accurately control the concentration of DO and nitrate nitrogen. The disclosure establishes a HMPC structure according to different time scales. Then, the concentration of DO and nitrate nitrogen is controlled with different frequencies. It not only conforms to the operation characteristics of WWTP, but also solves the problem of poor operation performance of multivariable model predictive control. The experimental results show that the HMPC method can achieve accurate on-line control of DO concentration and nitrate nitrogen concentration with different time scales.

Abstract: A forced separation device for a submarine drilling machine and a drilling tool comprises a transmission shaft, a main shaft, an electromagnetic transmission mechanism, a blasting separation mechanism and a pressure-resistant cabin, a gland is fastened to the upper portion of the pressure-resistant cabin, the electromagnetic transmission mechanism is provided with a driving sucker and a driven sucker, the driving sucker is connected with the transmission shaft, the driven sucker is connected with the main shaft, the gland is welded with the transmission shaft, and the driven sucker is welded with the lower portion of the pressure-resistant cabin; the blasting separation mechanism is provided with explosive packages and detonators, a plurality of explosive packages are distributed between the gland and the top surface of the pressure-resistant cabin, and each explosive package is connected with the corresponding detonator respectively; and the pressure-resistant cabin is further internally provided with a stor

Abstract: 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 arm of the plurality of arms includes a stem portion including a stem interior space, one or more branch portions each including a branch interior space, and a joint connecting the stem portion and the one or more branch portions. The joint includes a joint interior space and is configured to move the one or more branch portions relative to the stem portion. Each propulsion unit is attached to a corresponding arm of the plurality of arms. The stem interior space, the branch interior space, and the joint interior space are configured to provide an internal passageway to permit electrical routing between the central body and the plurality of propulsion units.

Abstract: 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.

Abstract: An unmanned aerial vehicle includes a frame, an avionics board assembly detachably mounted at a side of the frame, and a central board assembly detachably mounted at a top of the frame, spaced apart from the avionics board assembly, electrically connected to the avionics board assembly via a wire, and used to transfer at least one of a power signal or a communication signal. The avionics board assembly includes a flight controller used to control flight status of the unmanned aerial vehicle, and a positioning navigation device electrically connected to the flight controller and used to obtain current position information of the unmanned aerial vehicle.

Abstract: The present disclosure provides an agricultural plant protection machine. The machine includes a frame, a liquid storage tank for storing liquid, a pipeline connected to the liquid storage tank, a nozzle, and a pump for pumping the liquid in the liquid storage tank to the nozzle. The pump includes a pump body including a liquid inlet, a liquid outlet, and a pressure relief port; a pressure relief device disposed at the pressure relief port, the pressure relief device including a valve and an elastic reset member, the valve being disposed corresponding to the pressure relief port for sealing the valve. In response to a hydraulic pressure in the pump body exceeding a preset pressure threshold, the valve is separated from the pressure relief port under the force of the liquid and the liquid flows out of the pressure relief port.

Abstract: A diaphragm pump includes a pump body mechanism, a diaphragm mechanism, a motor mechanism, and an eccentric mechanism. The diaphragm mechanism includes a diaphragm. The eccentric mechanism including a bracket assembly and an auxiliary member. The motor mechanism includes a motor. The bracket assembly includes a bracket connected to the diaphragm and a driving member mounted at a motor shaft of the motor. The auxiliary member is mounted at the bracket, arranged corresponding to the driving member, and configured to contact the driving member. The diaphragm mechanism, the motor mechanism, and the eccentric mechanism are mounted at the pump body mechanism. The motor shaft is configured to drive the driving member to reciprocally abut against the auxiliary member to cause the bracket to move together with the auxiliary member to drive the diaphragm to reciprocate.

Abstract: A diaphragm pump includes a pump body mechanism, a one-way valve mechanism, a diaphragm mechanism, a motor mechanism, and an eccentric mechanism. The one-way valve mechanism includes a one-way valve and a valve cover configured to mount the one-way valve at the pump body mechanism. The diaphragm mechanism includes a pump cover mounted at the pump body mechanism and a diaphragm connected to the pump cover. The pump cover is configured to cover the diaphragm and the valve cover. The one-way valve mechanism, the diaphragm mechanism, the motor mechanism, and the eccentric mechanism are mounted at the pump body mechanism.