12results about How to "Reduce system power consumption" patented technology

The application relates to the technical field of atmospheric laser communication, and discloses a coherent laser communication diversity receiving system and method for self-adapting to an atmospheric channel, which comprises N optical amplifiers, N 90-degree optical mixers, N phase error modules, a phase error selection module, an optical phase-locked loop, a residual phase noise compensation module and a coherent combining module. Each 90-degree optical mixer is used to receive one-way signal light; the output end of the i-way optical amplifier, the i-way 90-degree optical mixer, the i-way phase error module, the phase error selection module, the optical phase-locked loop and the input end of the i-way optical amplifier are sequentially connected; and the i-way optical amplifier, the i-way 90-degree optical mixer, the i-way phase error module, the residual phase noise compensation module and the coherent combining module are sequentially connected. The application solves the problems of low stability of optical phase-locked coherent laser communication in an atmospheric channel and poor robustness of diversity receiving in the prior art.

The invention relates to the technical field of semiconductors, and discloses a double-gate two-dimensional transistor for multifunctional storage and logic calculation, which comprises a substrate, a floating gate layer, a tunneling layer, a channel layer, a top gate insulating layer, a bottom gate electrode, a top gate electrode, a source electrode and a drain electrode, the substrate is an N-type single-polished silicon oxide wafer, the floating gate layer is a graphene layer, the tunneling layer is a hexagonal boron nitride layer, the channel layer is a molybdenum disulfide layer, and the top gate insulating layer is a hexagonal boron nitride layer; the floating gate layer is arranged on the upper surface of the substrate, the tunneling layer covers the upper surface of the floating gate layer, the channel layer is arranged on the upper surface of the tunneling layer, and the top gate insulating layer covers the upper surface of the channel layer. By means of a heterogeneous stack structure of h-BN / MoS graphene and a double-gate independent regulation and control mechanism, single device integration of light perception, nonvolatile storage and logic operation is achieved, additional splicing links of sensing, storage and calculation units in a traditional system are omitted, and a hardware architecture is greatly simplified.

The invention provides a display panel and a display device.The display panel comprises a substrate, a pixel array located on one side of the substrate and an optical element layer arranged on the light emitting side of the pixel array, and the pixel array comprises a plurality of pixel units; the optical element layer comprises a plurality of optical units which are periodically arranged along a first direction; the orthographic projection of each optical unit on the pixel array covers at least one pixel unit. In the first direction, each optical unit has a first optical period P; the width of the effective light-emitting area of the pixel unit is L, and L is smaller than P. By limiting the pixel units in the coverage area of the optical units, the number of the pixel units between the adjacent optical units is reduced, and the arrangement density of pixels can be remarkably reduced while stereoscopic vision imaging is ensured, so that the driving cost and the system power consumption are reduced, and the effective light utilization rate of the system is improved; therefore, the display performance and the system economy are both considered.

The application relates to the technical field of data processing, and discloses a multi-source heterogeneous data edge processing method and device for field monitoring and a medium, which comprises the following steps: based on a data access link, parallelly receiving original data generated by different monitoring devices in a field monitoring site; extracting multi-dimensional features to determine the data source types corresponding to the original data; calling corresponding analysis engines according to the data source types to generate analysis results through differential analysis; determining the time field priority according to the data source types, selecting target time fields from the analysis results, performing unified event time axis mapping, and generating standardized data; writing the standardized data into a classified cache queue, determining the time effectiveness level according to the time difference between the standard event time and the current time, and performing hierarchical sending scheduling based on the time effectiveness level and the network state. The edge access capability of multi-source heterogeneous data in the field ecological monitoring scene, the cross-source time correlation capability and the key data sending capability under the weak network condition are improved.

The application discloses a kind of off-site computing power dynamic collaborative optimization methods based on multi-agent reinforcement learning, including the following steps: constructing resource topology diagram;Based on resource topology diagram, get node-level state feature vector and system-level state feature vector;Multi-agent environment is constructed;Local observation, global information and agent action set are input into improved CTDE model, output policy network parameters and value network parameters and construct training batch;Based on training batch, get converged policy network parameters and converged value network parameters;Get execution result;Obtain dynamically updated policy network parameters and dynamically updated value network parameters, realize the dynamic collaborative optimization of task acceptance, resource allocation, task migration, replica start-stop and bandwidth matching.

This invention discloses a hydrogen-assisted rechargeable battery method for hydrogen storage and production, belonging to the field of hydrogen energy storage and electrochemical energy storage technology. The method includes four core steps: battery assembly, circulating electrolyte supply, charging for hydrogen storage, and discharging for hydrogen production. During charging, hydrogen-containing gas is introduced into the cathode, where a hydroxide reaction occurs, and metal ion reduction and deposition occur at the anode, storing hydrogen energy as a metallic element in a solid state under normal pressure. During discharging, a metal oxidation and dissolution reaction occurs at the anode, and a hydrogen evolution reaction occurs at the cathode, generating hydrogen gas in situ and releasing hydrogen energy on demand. This invention eliminates the oxygen evolution reaction of traditional water electrolysis, using hydroxide coupled with metal oxidation-reduction to achieve hydrogen energy storage and release. It offers high storage safety, low reaction overpotential, high energy efficiency, and good cycle reversibility, solving the problems of poor safety, high energy consumption, and low energy efficiency in existing hydrogen storage technologies. It can be widely applied to renewable energy hydrogen production, large-scale hydrogen energy storage, and distributed hydrogen energy supply scenarios.

The invention discloses a snakelike liquid cooling energy storage battery PACK based on large-surface fitting. The PACK comprises a box body, and a battery module and a liquid cooling module which are arranged in the box body. The battery module is formed by arranging a plurality of battery cells; the liquid cooling module comprises a plurality of snakelike heat exchange plates which are arranged in parallel, and the large surfaces of the battery cells are attached to the snakelike heat exchange plates. A liquid through hole is formed in the snake-shaped heat exchange plate, and the two ends of the snake-shaped heat exchange plate are connected with a liquid inlet and outlet pipe with partitions and a reversing pipe to form a cooling liquid reciprocating flow path; the liquid inlet / outlet branch pipe is connected with the main pipe, and rapid external butt joint is achieved through the male plug. According to the invention, the heat exchange area is greatly increased through large-surface fitting, the heat conduction path is shortened, turbulence and temperature uniformity are promoted in combination with the snakelike back-and-forth flow channels, the problems of large thermal resistance and obvious temperature difference of a traditional bottom cooling or side cooling scheme are effectively solved, and the heat dissipation efficiency, temperature consistency and system reliability in a high-rate charging and discharging scene are obviously improved.

The application relates to the fields of acoustic signal processing and wireless communication technology, in particular to a binaural phase calibration noise reduction system and earphone based on in-band ultrasonic communication. The system comprises a first earphone device and a second earphone device. The first earphone device comprises a first signal processing unit and a first electro-acoustic transducer. The second earphone device comprises a second electro-acoustic transducer and a second signal processing unit. The second signal processing unit analyzes ultrasonic pilot components in a received signal, calculates a sampling clock deviation between the first earphone device and the second earphone device, and adjusts parameters of an active noise reduction filter according to the sampling clock deviation. The application aims to provide a binaural phase calibration noise reduction system and earphone based on in-band ultrasonic communication. By multiplexing existing sound emission and sound receiving units of earphones, in-band ultrasonic waves inaudible to human ears are used as a synchronization pilot, so that low-cost and high-precision binaural clock synchronization and dynamic calibration of noise reduction parameters are realized.

The application discloses a virtual array-based antenna direction finding method, device and equipment. When performing a direction finding task of a target antenna for the first time, a moving track of the target antenna can be determined according to a direction finding requirement, and a plurality of physical sampling positions can be selected uniformly on the track M The three-dimensional coordinates of the physical sampling positions are recorded. Then the physical sampling positions are equivalent to virtual array antenna elements, and a virtual array antenna is formed according to the track arrangement. A narrowband signal source is received on the virtual array to convert into a complex signal matrix, and a DBF angle estimation is performed on the virtual array antenna based on the complex signal matrix to obtain a preliminary DOA estimation angle, so as to construct adjacent and difference beams based on the estimation angle. The estimation deviation is solved by using the adjacent beams, and the preliminary estimation angle is corrected to obtain a final accurate angle estimation result. The application can improve the DOA estimation precision without increasing the hardware cost and system complexity.

The invention relates to the technical field of touch keys, and discloses a self-adaptive capacitive touch key system and a self-adaptive adjusting method. The system comprises a reference capacitor, a touch capacitor, a memristor, an auxiliary discharge resistor, a first switch, a second switch, a third switch and a microcontroller. Switching between a self-adaptive adjusting mode and a touch detection mode can be achieved by controlling the states of all the switches and all the elements through the microcontroller. And in the self-adaptive adjustment mode, the resistance value of the memristor is automatically adjusted according to the capacitance drift of the reference capacitor by utilizing the discharge process of the reference capacitor through the memristor, so that the reference time jointly determined by the memristor and the reference capacitor is kept constant. And hardware-level real-time self-compensation is realized, the intervention of a software algorithm is not needed, and the problems of false triggering, response failure and the like caused by reference capacitance drift due to environment temperature and humidity changes and material aging of a traditional capacitive touch key are solved. The circuit has the advantages of fast response, low power consumption, high reliability and nonvolatile memory capability.

The application discloses a switching rate adjustable electric signal routing device based on coupled topological edge states, and relates to the electronic information technical field.The electric signal routing device comprises an input port, a first output port, a second output port and a topological circuit module.The topological circuit module is composed of a first resonator subarray and a second resonator subarray which are connected by a third coupling element and have the same structure and topological edge states, so that the topological edge states of the two are coupled with each other to form symmetric and antisymmetric coupled topological edge states.The input port and the first output port are connected to positions of the topological edge states of the first resonator subarray, and the second output port is connected to a position of the topological edge state of the second resonator subarray.The function of switching signals to the first output port or the second output port at different switching rates is realized by adjusting the voltage of the excitation signal.The application has the advantages of simple structure, strong robustness based on the topological protection mechanism and no need of an additional control signal.

The invention provides a naked eye 3D head-up display system and method and a vehicle, and the system comprises an eye movement tracking unit which is used for obtaining a real-time eye image of a driver, and outputting the coordinate of a current fixation point; the processor is in communication connection with the eye movement tracking unit and is used for dynamically rendering display images of a plurality of screen display areas in a display area according to the coordinates of the current fixation point and fusing rendering results to form an output image with non-uniform resolution; and the optical engine is in communication connection with the processor and is used for performing light field reconstruction modulation on the display light corresponding to the output image to generate a three-dimensional image light field and guiding the three-dimensional image light field to a predetermined eye box area.