6results about How to "Overcome size limitations" patented technology

The invention belongs to the technical field of phase-change materials, and particularly relates to a long-term stable supercooling solar phase-change heat storage material capable of controlling electric trigger heat emission and a preparation method of the long-term stable supercooling solar phase-change heat storage material. The phase change heat storage material is composed of hydrogel serving as a framework material, hydrated salt fixed in a hydrogel framework through physical and chemical connection, a stably dispersed photo-thermal agent and an electrode embedded in the material. According to the invention, the spontaneous fluctuating effect of hydrated salt is obviously inhibited to reach a critical dimension and trigger crystallization, the long-term stable supercooled state of the material in a wide temperature range is realized, and by adjusting the proportion of the components, not only is the phase separation of the material effectively prevented, but also the photo-thermal conversion efficiency of the material can be obviously improved.

The present invention discloses an arch foot reinforcement structure and construction method for a subway station with an arch cover method. The arch foot reinforcement structure includes two layers of arch cover support, arch foot piles arranged at the arch feet on the left and right sides of the main body of the subway station arch cover, and an arch foot longitudinal beam connected to the arch foot piles. The arch foot piles are arranged along the tangent of the arch foot. The arch foot piles are composed of a steel frame and fine stone concrete poured into the steel frame and the pile hole. The present invention is a reinforcement system combining the arch foot piles with the longitudinal beams. The arch foot piles and the first and second layers of the arch cover support are connected by the longitudinal beams. The structure has good integrity and strong resistance to local stress and deformation. It can effectively reinforce and protect the deep and broken surrounding rock at the arch foot. In addition, the construction method of the arch foot reinforcement structure provided by the present invention has flexible selection of reinforcement scope and implementation object, which is aimed at the broken rock layer of the arch foot of the supporting arch cover, and will not have an overall impact, nor will it affect the advantages of the arch cover method in terms of project cost, construction period, implementation efficiency, mechanized operation, etc.

Embodiments of the present invention disclose a camera actuator, comprising: a housing; a mover disposed in the housing and comprising an optical member, and a driving part disposed in the housing to drive the mover, wherein: the driving part comprises a driving magnet, a driving coil placed opposite to the driving magnet, a sensor unit for sensing a position of the mover, and a board unit connected to the sensor unit; the sensor unit comprises a first sensor unit and a second sensor unit opposite to the first sensor unit and connected to the first sensor unit in series.

The application relates to a degradable ZnZrCu alloy with an amorphous-crystal heterostructure and a preparation method thereof, and belongs to the field of material design and preparation. The application proposes a combined process route of mechanical alloying and selective laser melting to in-situ synthesize a ductile phase in an amorphous matrix, and develops a degradable ZnZrCu alloy with both amorphous phase and ductile phase. The medical Zn-based amorphous alloy developed by the application shows good strength-plasticity synergy and good degradation rate. The application inherits the advantages of additive manufacturing of selective laser melting, can effectively break through the size limitation of traditional forming process of amorphous alloy, realize the individual customization of the shape and structure of the amorphous alloy, and provides a new idea for the preparation of the amorphous-crystal heterostructure alloy and biomedical application. Meanwhile, the application is simple in composition, controllable in process, and convenient for large-scale industrial application.

The application discloses a kind of based on unmanned aerial vehicle and deep learning's field crop seedling high-precision detection method.The method is first obtained by unmanned aerial vehicle shooting high-definition remote sensing image, then these images are spliced into DOM image with geographic coordinates by unmanned aerial vehicle image processing software, DOM image is cut, detected, spliced and handled step by step, to obtain the specific location and size information of field crop seedling.Combining data analysis and image processing technology, further obtain field crop seedling information.In the key link of detection and splicing, the application adopts IoA method, which is used to eliminate the errors produced in the detection process of deep learning model and the deviation brought by image cutting process.The results show that, when identifying field crop seedling, the seedling counting accuracy of the method reaches more than 95.3%, and the mAP index is not less than 87.1%.The method provides an effective technical approach for high-precision detection of field crop seedling.