19results about How to "Improve power efficiency" patented technology

This invention provides a multi-stage, multi-angle, rapid diffusion oxygen dissolving three-dimensional non-clogging microbubble aerator. An air inlet pipe and an air pipe are sequentially connected along the air inlet direction. A rapid microbubble cutting and diffusion oxygen dissolving unit is fitted outside the air inlet pipe. An inner cylinder and an outer cylinder are sequentially fitted outside the air pipe from the inside to the outside. The inner cylinder has a first inner cylinder section, a second inner cylinder section, and a third inner cylinder section sequentially along the air inlet direction. A medium-sized bubble cutting and diffusion oxygen dissolving unit is installed on the outer wall of the first inner cylinder section, a large bubble cutting and diffusion oxygen dissolving unit is installed on the outer wall of the second inner cylinder section, and an air guiding unit is installed on the outer wall of the third inner cylinder section. An air diffuser unit is installed at the air outlet of the air pipe. This multi-stage, multi-angle, rapid diffusion oxygen dissolving three-dimensional non-clogging microbubble aerator effectively cuts air into microbubbles, effectively solving the problems of clogging and short lifespan of traditional aerators after long-term use, and is suitable for aerobic aeration treatment.

This invention discloses an HPAM-DMT-NOMA method based on time-domain preprocessing, comprising: At the transmitting end, PAM modulation is performed on the input user transmission bits to generate PAM symbols; after power superposition, serial-to-parallel conversion, and Hermitian symmetry, the symbols are allocated to two signal components for HPAM-DMT transmission; the frequency domain signals of PAM-DMT and RPAM-DMT are calculated; an IFFT operation is performed to obtain the time domain signal; the time-domain preprocessed signal is calculated; the RPAM-DMT time domain signal is calculated and superimposed on the clipped PAM-DMT signal for synchronous transmission to obtain a mixed signal; a reconstructed signal is introduced, processed, and input to drive an LED for illumination; at the receiving end, the received signal is processed to generate a frequency domain signal, and finally, the multi-user signal is recovered. This scheme eliminates clipping noise interference between the mixed signal components, avoids error propagation problems, and achieves high spectral efficiency and power efficiency.

This application belongs to the field of wireless charging technology, specifically relating to a constant current and constant voltage wireless charging system and method based on a three-coil loosely coupled transformer, including an inverter circuit, a primary-side compensation circuit, a resonant circuit, a secondary-side compensation circuit, a rectifier circuit, and a filter capacitor; the resonant circuit has an anti-parallel coil structure, with the third coil located on the secondary side and a single coil on the primary side; its advantages are high misalignment tolerance, load-independent output, and high efficiency.

A light emitting diode (LED) array comprising: a plurality of pixels, each of the pixels comprising a respective group of light emitting diodes (LEDs), the plurality of pixels comprising: a first group of pixels configured to emit a first red primary wavelength; a second group of pixels configured to emit a first green primary wavelength; a third group of pixels configured to emit a first blue primary wavelength; the first red primary wavelength, the first green primary wavelength, and the first blue primary wavelength defining an RGB (red-green-blue) color gamut; and a fourth group of pixels configured to emit a non-white emission comprising a higher luminous efficacy than any of the first group of pixels or the third group of pixels to increase power efficiency of the device.

This invention discloses an isolated, fully soft-switching AC-DC-AC converter with primary and secondary side co-multiplexing and a modulation method. The converter includes a front-stage AC-DC converter, an intermediate-stage full-bridge LLC resonant converter, and a rear-stage DC-AC converter. This invention multiplexes the primary-side bridge arm of the full-bridge LLC resonant converter with the output bridge arm of the front-stage AC-DC converter, and the secondary-side bridge arm with the input bridge arm of the rear-stage DC-AC converter, forming an integrated AC-DC-AC converter structure, thereby reducing the number of components. Simultaneously, it employs PWM and phase-shift modulation strategies to control the inductor current of the four-transistor Buck-Boost circuit into a quadrilateral inductor current, thus achieving soft switching of all switching transistors. This topology is suitable for isolated AC conversion scenarios, enabling soft switching of switching devices, electrical isolation, wide-range voltage regulation, and effectively reducing the number of components. It also offers advantages such as high power density, high conversion efficiency, and high reliability.

The utility model provides a kind of jacking rotary code scanning device, it is related to battery production technical field.Jacking rotary code scanning device includes first driving part, mounting piece, transmission part and second driving part.The output end of first driving part is connected with mounting piece, for driving mounting piece to lift, the number of transmission part is multiple, multiple transmission parts are movably arranged in mounting piece and are sequentially transmission connection, the output end of second driving part is connected with any one transmission part, for driving multiple transmission parts to rotate, transmission part is used to drive battery to rotate, to this is conducive to identification mechanism accurate identification battery, and by driving battery to rotate can effectively avoid the problem that identification mechanism cannot be identified due to battery surface reflection light influence identification mechanism cannot be identified.Obviously, the jacking rotary code scanning device provided by the utility model embodiment is high in degree of automation, and significantly improves identification success rate and production efficiency.

This invention discloses a method for grasping transparent objects based on large-model semantic segmentation. The method includes acquiring the original RGB image and original depth data of a scene containing transparent objects, performing distortion correction and spatiotemporal alignment to generate a distortion-free RGB image and an aligned depth map. From the decoupled ROI image, the rigid texture features and sub-pixel-level geometric edge features of the transparent objects are extracted. This invention achieves zero-shot semantic segmentation by introducing a visual large-model based on cueing engineering. It constructs a hybrid pose solver that integrates rigid texture matching and sub-pixel geometric edges, employs adaptive weighted optimization, and combines a dynamic feature culling mechanism based on semantic masks. This enables accurate, reliable, and automated operation of the entire process from perception and localization to grasping of transparent objects, comprehensively improving the success rate and operational efficiency of grasping transparent objects in complex scenes.

The application relates to the technical field of natural language processing and intelligent question answering, in particular to an educational administration question answering system based on semantic analysis, which comprises the following modules: a multi-modal input module that receives natural language question text, fuses real-time academic portrait data and system time into an implicit state vector; a semantic analysis module that extracts core intention features and target entity features; a logic verification module that searches for a target rule node in an educational administration logic knowledge graph based on the intention features, and compares and calculates the implicit state vector in time and state constraint conditions; a dynamic response and guidance module that generates graded response content according to a logic feasibility determination result, or generates an alternative suggestion path based on a graph association structure; the application realizes the leap from static information retrieval to dynamic decision assistance, effectively intercepts invalid operations and reduces the cost of manual interpretation.

This invention provides a cableless integrated POS device with an embedded printing module, belonging to the field of terminal welding technology. This cableless integrated POS device with an embedded printing module includes a POS counter, with an equipment platform located behind the counter. The POS counter and equipment platform are integrated into a single structure. An integrated POS machine is placed on top of the POS counter. A centering mechanism is provided between the top surface of the equipment platform and the bottom surface of the conveyor frame. This invention, by setting a centering mechanism, achieves automatic centered conveying of goods, improving scanning success rate and POS efficiency. An electric telescopic rod drives the centering plates on both sides to move synchronously towards each other with the centering frame, automatically aligning goods of different sizes directly below the barcode scanner. This avoids scanning failures, missed scans, or duplicate scans caused by product misalignment, replacing manual handheld scanning operations, significantly reducing the labor intensity of cashiers, and significantly improving overall POS efficiency.

The application discloses a kind of underwater man-machine shared teleoperation control methods based on bilateral trust mechanism.Method includes: master end force feedback device teleoperation control underwater mechanical arm moves, so that underwater mechanical arm end underwater hand-eye camera identifies underwater target, first, the master end evaluation model of master end force feedback device is established to obtain master end trust factor;Establish the visual evaluation model of underwater hand-eye camera, and finally obtain visual trust factor by density-based visual measurement outlier rejection method;Master end trust factor, visual trust factor and each control instruction are collectively processed by man-machine shared teleoperation method based on fuzzy logic, and the desired control instruction of underwater mechanical arm is obtained to carry out man-machine shared teleoperation control.The application can effectively eliminate the outlier of visual identification, ensure the reliability of visual servo system, introduce visual auxiliary system, can further reduce the burden of operator, improve the task success rate and operation efficiency of teleoperation system.

This invention belongs to the field of automated fruit and vegetable harvesting technology, and provides a method and apparatus for continuous fruit and vegetable harvesting. The method includes: calculating the harvestability of multiple fruits and vegetables to be harvested, whereby the harvestability characterizes the harvesting success rate when obstacles exist around each fruit and vegetable; determining a first total harvesting cost based on the harvestability, missed harvesting rate, and harvesting path length of each fruit and vegetable; constructing and solving an optimization problem with the first total harvesting cost as the optimization objective to obtain the harvesting order of each fruit and vegetable, so that a robotic arm can continuously harvest multiple fruits and vegetables according to the harvesting order. The method and apparatus of this invention improve the harvesting success rate and efficiency of fruits and vegetables in dynamic clustered growth environments.

Disclosed are an organic electroluminescent material and a device thereof. The organic electroluminescent material is a metal complex comprising a metal M and a ligand L having a structure of formula 1 a The metal complex has a lower evaporation temperature, which is conducive to reducing energy consumption in the device preparation process, and can be applied to an electroluminescent device as a luminescent material. When the metal complex is applied to an electroluminescent device, higher device efficiency and longer device lifetime can be achieved, and better device performance can be provided. An electroluminescent device comprising the metal complex and a compound composition comprising the metal complex are also disclosed.

The utility model relates to fertilizer processing technical field discloses an organic fertilizer granulator, including the drum, the outside fixed connection of drum has motor base, the top fixed connection of motor base has motor three, the drive end rotationally connected with output shaft of motor three, the outside rotationally connected with the flapper gear of output shaft, the outside slide connection of flapper gear has the flapper strip, the top fixed connection of flapper strip has the disc, the outside fixed connection of disc has the pivot, the other end fixed connection of pivot has the support, the outside fixed connection of disc has the knock hammer. In the utility model, the ration feeding assembly takes the core with the hopper, and the raw materials of temporary storage drum are received, the cylinder is the motive source, the fixed axle, the clamping plate, the connecting axle drive the driving plate, and then the connecting plate is pulled around the pin shaft rotation through the crank rod, drives the slide opening and closing of the discharge door, and each component cooperates to realize the continuous ration feeding of raw materials.

This invention discloses a high-precision, lightweight micro-stress assembly method for a reflector, relating to the field of space optical remote sensing technology. The method includes: calculating the minimum total adhesive area to ensure reliable connection between the primary mirror and the central axis based on the dynamic conditions of the optical lens, and obtaining the initial adhesive spot length for each corresponding adhesive spot; establishing a parameterized finite element model of the components including the primary mirror, central axis, structural frame, and adhesive layer, and equivalently simulating the adhesive stress generated by the curing shrinkage of the adhesive layer; parametrically adjusting the actual adhesive spot length of each spot, starting from the initial adhesive spot length, and simulating the root mean square (RMS) value of the primary mirror surface shape error caused by adhesive stress at each actual adhesive spot length; and determining the optimal adhesive spot length based on the curve of the RMS value changing with the actual adhesive spot length. This invention overcomes the problem in the bonding process between the primary mirror and the central axis where the adhesive area design only considers the lower limit requirement of mechanical strength, neglecting the negative impact of adhesive stress on the primary mirror surface shape.

The application discloses a variable magnetic guide stator structure and an axial flux permanent magnet motor, and the variable magnetic guide stator structure comprises a stator yoke part, a stator tooth part, a stator tooth shoe and a stator winding, the stator yoke part is provided with wedge-shaped grooves distributed in a ring shape, the stator tooth part is radially assembled to the stator yoke part through matched wedge-shaped bosses, the stator tooth part is provided with triangular grooves on both sides, the stator tooth shoe is embedded between adjacent stator tooth parts through parallelogram bosses, and the three are radially embedded to form a modular stator structure, the stator iron loss is reduced through modular assembly and differential material matching, the air gap magnetic field is actively regulated and controlled by relying on the variable magnetic guide tooth shoe, torque pulsation is effectively inhibited, axial magnetic pulling forces can be offset by the symmetrical layout of the double stator, the double stator has the characteristics of high torque density and wide power domain efficient operation, and is suitable for new energy automobile, wind power and other scenes.

This invention provides a stator assembly and a motor system having the same. The stator assembly includes: a stator core having multiple axially extending stator slots evenly arranged along the circumference of the stator core; a winding assembly including at least slot-in-slot Litz wires and end flat wires, the slot-in-slot Litz wires passing through the stator slots, and two end flat wires, each end of the slot-in-slot Litz wire connected to one of the end flat wires; and a busbar connected to one of the end flat wires. By applying the technical solution of this invention, due to the inherent structural characteristics of Litz wires, using slot-in-slot Litz wires can effectively reduce the skin effect of the winding assembly, thereby reducing the AC copper loss of the stator assembly, improving the power density and efficiency of the motor. The connection of the two ends of the slot-in-slot Litz wires to the end flat wires results in better end forming of the winding assembly, improving the manufacturing difficulty and height of the winding ends.

The utility model discloses a dual-band cooperative interference circuit module for an anti-unmanned aerial vehicle system, which comprises signal sources, a radio frequency unit and a timing control unit, the signal sources comprise a first signal source and a second signal source, and the radio frequency unit comprises a first power amplifier and a second power amplifier. The first power amplifier and the second power amplifier are respectively connected with the first signal source and the second signal source, the timing control unit comprises a first timing control unit and a second timing control unit, and the first signal source and the second signal source are respectively connected with the first timing control unit and the second timing control unit. A control signal from the timing control unit is received. According to the scheme, by means of the multi-frequency-band design of the power amplifier in the radio frequency unit, 2.4 GHz / 5.8 GHz dual-frequency-band signal synchronous coverage is achieved, and the multi-frequency-band unmanned aerial vehicle target is effectively dealt with.

The present application relates to a kind of cylinder type launching folding four-rotor unmanned aerial vehicle, including upper casing, lower casing, front casing, rear casing and four arms, further including connecting piece and four V-shaped springs, arm pivot and inclined table corresponding with arm one to one arrangement.It is automatically unfolded under the cooperation of V-shaped spring and inclined table, and is locked under the constraint of connecting piece, arm pivot and one of upper casing and lower casing, realizes the automatic unfolding and unfolding position locking of arm, improves the safety and reliability of unmanned aerial vehicle flight.The unfolded arm only needs to be operated by hand operation to be quickly folded back.The arm is X-shaped when unfolding, so that the force transmission path is shorter, and the structural stiffness is improved.The arm is machined to receive the spring, and the weight of the arm is reduced.The arm is placed in the middle part of the body, and the battery diameter and propeller diameter can be larger, so that the power efficiency of the unmanned aerial vehicle is improved.The electronic equipment is installed in the hollow space of upper and lower casing, so that the space utilization of the unmanned aerial vehicle is improved.

The present disclosure relates to an organic electroluminescent compound represented by formula 1 and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound of the present disclosure, an organic electroluminescent device having improved driving voltage, luminous efficiency, lifespan characteristics, and / or power efficiency can be provided.