6results about How to "Guaranteed frequency" patented technology

The utility model discloses a graphene oxide cake material crushing device, and relates to the technical field of graphene oxide processing, the graphene oxide cake material comprises a feed hopper used for crushing the graphene oxide cake material, the feed hopper is provided with two supporting wallboards which are symmetrically arranged, and the longitudinal section of each supporting wallboard is in an L shape; the two ends of the two supporting wallboards are each fixedly provided with an end plate. The number of the material crushing rollers used for crushing the graphene oxide cakes is two, and each material crushing roller is provided with a driving shaft rod and a crushing blade; a plurality of crushing blades are arranged, the plurality of crushing blades are uniformly arranged in an array along the axis direction of the driving shaft rod, and the two groups of mutually engaged crushing blades can quickly roll a large cake material into the blade group, so that the speed of the graphene oxide cake material crushing device is increased; according to the utility model, after graphene oxide cakes are shredded into blocks, dispersion treatment or drying treatment is carried out, and the dispersion time or the drying time is obviously shortened.

A method and system for collecting pedestrian motion data based on hybrid rendering renders a pre-set traffic scene from a virtual engine onto a virtual reality headset. Subjects then perform a series of human-vehicle interaction behaviors and reactions based on the images displayed on the headset. Motion capture devices record these behaviors and reactions while simultaneously driving a virtual character within the rendering engine, completing a series of data acquisition processes within the rendering engine. This invention fully combines the convenience of scene creation, data acquisition, coordinate system calibration, and time synchronization of a rendering engine simulator with the richness and realism of human movement and reactions in the real world. It captures and redirects the reactions and movements of real pedestrians based on the virtual scene in the rendering engine to a virtual character within the rendering engine, and then collects and records multi-view, multi-modal data within the rendering engine.

The utility model discloses an old man turning-over device relates to medical auxiliary instrument technical field, including frame body part, control part and lifting part, replace manual heavy physical operation: device relies on the drive motor of control part, screw rod and abutment plate cooperation, through motor drive screw rod rotation, drive abutment plate to lift to promote first side plate, second side plate rotation around pivot, realize the mechanical lifting of old man body position and turn over, replace traditional manual auxiliary turning-over's heavy physical labor. Without nursing staff consuming physical strength to move or lift the old man, solve the problem of nursing staff fatigue caused by frequent turning over at night, reduce the work burden of long-term nursing, adapt to the scene of family lack of professional nursing staff.

The utility model relates to the technical field of photoelectricity, in particular to a photoelectric conversion circuit for an omnidirectional photoelectric receiver. Comprising a multi-stage signal amplification circuit, a signal filtering and interference source processing module, a pulse level output circuit and a power supply unit module, the multi-stage signal amplification circuit is used for amplifying the current signal and converting the current signal into a voltage signal with a symmetrical waveform; the signal filtering and interference source processing module is used for carrying out de-noising processing on the voltage signal in the photoelectric conversion circuit; the pulse level output circuit adopts a hysteresis comparator circuit design and is used for converting the voltage signal into a digital pulse signal; the power supply unit module comprises a single-power-supply low-ripple power supply unit and a reference voltage source unit, the single-power-supply low-ripple power supply unit is used for providing power for the photoelectric conversion circuit, and the reference voltage source unit is used for providing output limiting level. The photoelectric conversion circuit provided by the utility model can effectively adapt to an omnidirectional photoelectric receiver, and realizes a high-speed photoelectric conversion function.

The present invention relates to the technical field of microwave technology, and relates to a switching system based on signal low frequency, which also includes a code modulation component for code element rate correction arranged at intervals in the channel, and the code modulation component includes a primary correction unit for transmission rate adjustment, a secondary correction unit and a tertiary correction unit for code element number adaptive adjustment. The code modulation component can effectively improve the regulation of the code element number, and can timely adjust the code element rate, etc., thereby ensuring the frequency of the signal and ultimately reducing the distortion probability of the signal.

This invention belongs to the field of photovoltaic power generation control technology and discloses a method for partitioning distributed photovoltaic clusters in a regional distribution network. It calculates the electrical distance between nodes based on a frequency-active power sensitivity matrix and obtains the electrical distance matrix. An optimized initial centroid is obtained using the PSO algorithm. Based on the initial centroid, the K-means algorithm is applied to perform cluster analysis on the nodes of the distribution network, completing the cluster partitioning of energy storage nodes. Using energy storage nodes as centroids, the remaining photovoltaic nodes without energy storage and load nodes are further partitioned into clusters. A comprehensive performance index is obtained by weighting three indicators: active power balance, energy storage balance, and modularity. The partitioning scheme with the highest comprehensive performance index is considered the optimal cluster partitioning. This invention uses the energy storage area as the center to partition distribution areas containing distributed photovoltaics into clusters, providing necessary inertia and frequency support for the power grid.