An image display control method and device, and a display screen control system (30). The method comprises: receiving an input image (S11); performing luminance component mapping on target pixel data of the input image (S12); converting the target pixel data subjected to the luminance component mapping from a color-luminance separated color space into a primary color space (S13); filtering the target pixel data subjected to the luminance component mapping and converted into the primary color space (S14); and outputting the filtered target pixel data to a display screen for image display (S15).

Disclosed are an IC card automatic double spot welding device and an IC card welding robot. The IC card automatic double spot welding device comprises a workbench (401), an IC card automatic spot welding work platform (400) mounted on the workbench (401), and a plurality of spot-welder hosts (402) placed on the workbench (401). The IC card automatic spot welding work platform (400) comprises a mounting baseplate (403), an automatic sliding table (404) and at least three double spot welding machine heads (200) mounted on a gantry frame (405). The gantry frame (405) is provided with an adjustment structure for adjusting the distance between the double spot welding machine heads (200). Two parallel electrode welding heads are mounted on each of the double spot welding machine heads (200) via an integral welding head clamp (301), and the mounting distance thereof is adjustable. Welding a row of welding spots on an IC card weldment at one time can be finished by a plurality of the double spot welding machine heads (200); and by means of an automatic sliding table in the longitudinal direction, the welding of all the welding spots on the IC card weldment can be finished. In addition, the structure of the IC card welding robot is proposed by combining the IC card automatic double spot welding device with a small ferromagnet pre-set on the IC card weldment.

Provided are a method and device for adjusting brightness of a display screen. The method comprises: acquiring illuminance data of respective independently controlled display regions (S11); determining, according to the illuminance data of the respective independently controlled display regions and a preset relationship table between illuminance and brightness ratios, brightness ratios of the respective independently controlled display regions (S13); and correspondingly adjusting, according to the brightness ratios of the respective independently controlled display regions, brightness of the respective independently controlled display regions (S15). The display screen can mitigate a problem in the LED display industry in which non-uniform illuminance results in a poor viewing experience for a viewer, thereby realizing a consistent viewing experience for a viewer even when illuminance is not uniform.

A spot welder tip for a precision electrode force pressure system. The tip comprises: a tip frame (101); a welding force drive shaft (102) installed on the tip frame (101), wherein one side of the welding force drive shaft (102) is connected, via a welding force drive clamp (105) tightly secured thereon, to a welding force providing device, and another end of the welding force drive shaft (102) is connected, via an electrode force drive clamp (106) tightly secured thereon, to an electrode force drive shaft (103); and a pressure sensor (107) tightly secured on the welding force drive shaft (103), wherein the pressure sensor (107) is provided with a securing end (113) secured to the welding force drive shaft (102) and with a force sensing end (114) distal from the securing end (113). The welding force drive shaft (102) is provided with a compression spring (109) pressing against the electrode force drive clamp (106). The force sensing end (114) of the pressure sensor (107) is provided with a buffering spring (108) pressing against the electrode force drive clamp (106). The spot welder tip can meet a precision requirement of a pre-configured electrode force necessary when performing spot welding on a small workpiece. The tip can also maintain a relatively constant electrode force within a pre-configured range for the entire period of a welding process.

Rapid synthesis of silver nanowires (Ag NWs) with high quality and a broad processing window is challenging because of the low selectivity of the formation of multiply twinned particles at the nucleation stage for subsequent Ag NWs growth. Herein we report a systematic study of the water-involved heterogeneous nucleation of Ag NWs with high rate (less than 20 min) in a simple and scalable preparation method. Using glycerol as a reducing agent and a solvent with a high boiling point, the reaction is rapidly heated to 210 degrees C in air to synthesize Ag NWs with a very high yield in gram level. It is noted that the addition of a small dose of water plays a key role for obtaining highly pure Ag NWs in high yield, and the optimal water/glycerol ratio is 0.25%. After investigating a series of forming factors including reaction temperature and dose of catalysts, the formation kinetics and mechanism of the Ag NWs are proposed. Compared to other preparation methods, our strategy is simple and reproducible. These Ag NWs show a strong Raman enhancement effect for organic molecules on their surface.

Disclosed is a method for implementing antenna modularization, comprising: dividing components of an antenna, forming antenna modules by the divided components, and setting types of the antenna modules. Also disclosed are a device for implementing antenna modularization and antenna modules.

Disclosed are a sand prevention screen pipe and a method for manufacturing the same. The sand prevention screen pipe comprises a base pipe (1) and a filter component (2), wherein a through-hole (11) is provided in a pipe wall of the base pipe (1); the filter component (2) comprises a layer of filter screen (21), the filter screen (21) has an opening with a pore diameter of a first size, a first side edge of the filter screen (21) and a second side edge of the filter screen (21) are welded to form a first sleeve structure via a welding process, the first sleeve structure is sheathed outside the base pipe (1) to constitute a first filter layer of the base pipe (1); and the pore diameter of an opening, which is formed by means of welding the opening at the first side edge of the filter screen (21) and the opening at the second side edge of the filter screen (21), is smaller than or equal to the first size. With regard to the method of winding 2-5 rolls of metal meshes structure on the periphery of a base pipe, the present invention can decrease the pipe diameter of the sand prevention screen pipe, thereby facilitating lowering the sand prevention screen pipe with decreased pipe diameter into an oil and gas wellbore. In addition, the permeability and the ability of anti-blocking of the sand prevention screen pipe can be improved.

A method for reinforcing a metal material by means of graphene. The method comprises: first, mixing a mono-dispersed graphene solution and metal powder and carrying out ball-milling; then, loading the mixed powder into a can and sealing the can; afterwards, carrying out hot isostatic pressing; and finally, carrying out hot extrusion so as to obtain a grapheme-reinforced metal rod material or sheet material.