4results about How to "Effective space" patented technology

The application provides a kind of multi-source cultivated land grid data organization consistency inspection method and device, the method is first for the purpose of grid data organization, selects characteristic attribute;Then according to the characteristic attribute, the cultivated land original data and cultivated land grid data of research target area are classified respectively according to attribute level, and the area data with attribute level is obtained;According to the selected administrative division level, the area data with attribute level is divided in spatial range, and the regional data with administrative region spatial division and attribute level is obtained;The area of each region under each attribute level is calculated, and the area change dynamic degree of each region is determined;According to the area change dynamic degree of each region, the consistency of space and attribute is inspected. Using the application can carry out consistency inspection on cultivated land grid data from space and attribute.

The utility model provides a flexible material conductivity detection device with a counterweight straightening structure, which comprises a support bearing assembly, a fixed guide connection assembly, a carrier guide assembly, a movable guide connection assembly, a counterweight balance assembly, a power supply detection assembly and a temperature sensing assembly, the counterweight balance assembly arranged on the detection equipment can accurately control the tensile force applied to the flexible material through the cooperation of a balance motor, a balance belt wheel, a balance toothed belt and a balance weight block, and is helpful for ensuring that the flexible material is kept in a straight state in the detection process, so that the accuracy and reliability of detection are improved, and the detection efficiency is improved. The fixed guide connection assembly and the movable guide connection assembly are respectively provided with a positioning space and a clamping structure, flexible materials of different shapes and sizes can be flexibly adapted, sheet-shaped flexible materials or linear flexible materials can be effectively positioned and clamped, and the stability and reliability of the detection process are ensured.

The utility model provides a photoelectric isolation 16-port concentrator with a built-in power supply, and relates to the technical field of network communication equipment. The hub comprises a shell, wherein a mounting cavity is formed in the shell to accommodate each component; the power supply module is fixed on one side of the bottom of the mounting cavity and provides power for the concentrator; the photoelectric isolation module is arranged above the power supply module at intervals through an insulating bracket to realize a photoelectric isolation function; the port group comprises 16 RJ45 interfaces, odd-numbered ports are inclined upwards, and even-numbered ports are inclined downwards, so that connection is facilitated; the heat conduction structure effectively dissipates heat; and the shielding structure enhances the electromagnetic shielding effect. In addition, heat dissipation fins are arranged on the side wall of the shell, heat dissipation grids are arranged on the top of the shell, and the heat dissipation performance is further improved. The concentrator solves the technical problem of contradiction among high-density port layout, multi-module heat dissipation requirements and multi-band electromagnetic interference collaborative suppression in a compact space, and achieves the effect of synchronously optimizing heat dissipation efficiency and electromagnetic interference suppression in the compact space.

This invention discloses a graphene-coated silicon nanocomposite material, its preparation method, and its application, belonging to the field of battery materials technology. The preparation method of this composite material includes: firstly, removing the oxide layer on the surface of the silicon nanocomposite and performing plasma activation to obtain silicon nanocomposite with active sites and functional groups on the surface; dispersing it in a carbon source precursor solution, mixing it evenly, and then centrifuging and drying it at low temperature to obtain a silicon-coated precursor; under inert gas protection, carbonizing the silicon-coated precursor at 500-700℃ and simultaneously introducing it into a catalyst precursor, then introducing a carrier gas containing hydrogen and carbon, and heat-treating it at 800-950℃; finally, acid washing, water washing, and drying to obtain the target material. This invention achieves low-temperature controllable growth of graphene by optimizing process parameters. In the prepared core-shell composite material, 1-30 few-layer graphene shells are tightly bonded to the silicon nanocomposite core. When used as a negative electrode active material for lithium-ion batteries, it exhibits high specific capacity, excellent cycle stability, and rate performance. The process is easily scalable and has promising application prospects.