9results about How to "Eliminate reflections" patented technology

The invention relates to the technical field of industrial vision and artificial intelligence, and discloses an aluminum coating formula prediction method and system based on industrial vision and double-model fusion. The method comprises the following steps: acquiring visible light and near-infrared band images of the surface of an aluminum material coating through multispectral image acquisition, identifying a defect area to generate a binary mask, extracting three types of features of color, texture and spectral reflection, and respectively inputting feature vectors into a random forest regression model and a convolutional neural network model to obtain a target image; and dynamically calculating a fusion weight according to the verification set error, and carrying out weighted fusion on the prediction results of the two models to generate a formula component content prediction value. According to the method, the technical problems of low precision, low efficiency and insufficient generalization ability of a traditional aluminum coating formula determination method are solved, and rapid and accurate prediction of the formula is realized.

This invention relates to a system and method for measuring the internal flow field of film cooling holes in aero-engine blades based on refractive index matching. The system includes a main flow section, a transparent material body below the main flow section, and film cooling holes embedded within the transparent material body. Cooling fluid flows through the film cooling holes. A laser is positioned above the main flow section, and a high-speed camera is positioned outside the transparent material body. The irradiation range of the laser and the imaging range of the high-speed camera both cover the internal channel region of the film cooling holes. The measurement method includes: introducing the main flow medium into the main flow section, introducing the cooling fluid into the film cooling holes, irradiating the flow field region inside the film cooling holes with a laser beam, and continuously acquiring images of the flow field region using the high-speed camera. Compared with existing technologies, this invention overcomes the optical limitations of traditional methods in measuring complex channels and near-wall regions, significantly improving the visualization and measurement level of the flow structure inside film cooling holes.

The application discloses a copper film structure and a transparent antenna. The copper film structure comprises a copper foil substrate layer, a first blackening layer and a second blackening layer. The copper foil substrate layer comprises a first surface and a second surface arranged oppositely. The first blackening layer is formed on the first surface and is arranged to reduce the gloss of the first surface, so that the gloss of the first surface is reduced to less than a preset gloss value. The second blackening layer is formed on the second surface and is arranged to reduce the gloss of the second surface, so that the gloss of the second surface is reduced to less than the preset gloss value. The technical scheme can effectively improve the problem that the existing transparent antenna is difficult to balance between high conductivity and low visual visibility.

The invention provides a wafer-level acoustic function testing method and a supporting substrate, and relates to the technical field of wafer-level testing. The method comprises the following steps: firstly, providing an acoustic sensor wafer of which the surface is provided with a protection structure, and thinning the acoustic sensor wafer; a supporting substrate is provided, and the acoustic sensor wafer and the supporting substrate are bonded through a bonding material to form a bonded wafer; wherein the supporting substrate is provided with a through hole window and a first slotting structure, the position of the through hole window corresponds to the position of a functional area of a wafer, and the position of the first slotting structure corresponds to the position of a cutting channel of the wafer; then the bonding wafer is placed on the cutting workpiece, and the protection structure on the surface of the bonding wafer is removed; cutting the substrate of the acoustic sensor wafer along the cutting channel until the bonding material or the supporting substrate is exposed; and finally, the bonded wafer is taken down from the cut workpiece, and a wafer-level acoustic function test is carried out. According to the scheme of the invention, the method has the advantages of acoustic fidelity, wafer-level operation robustness and inter-chip acoustic isolation.

This utility model discloses a device for visual inspection of lenses. The key technical features include a machine platform on which multiple industrial cameras for visually inspecting lens appearance and a light diffuser are placed. A feeding plate is also provided on the machine platform, holding several trays of lenses to be inspected and trays of defective lenses. The machine platform also includes a driving device for moving the feeding plate along the X and Y axes to inspect the lenses, and a suction pen for picking up defective lenses and placing them into the defective lens tray. This utility model enables automated visual inspection by moving the lenses instead of the industrial cameras, avoiding the impact of camera movement on inspection accuracy and greatly improving inspection efficiency and quality.

The utility model discloses a KU wave band band-pass waveguide filter comprising a lower seat which is internally provided with a ripple filtering groove penetrating through two sides; the upper cover is buckled at the top of the lower seat and is fixed, so that the corrugated filtering grooves are encircled to form a single filtering channel; the input end is arranged at one end of the filtering channel; the output end is arranged at the other end of the filtering channel, and the filtering channel can be communicated end to end under the action of the input end and the output end; the impedance transformer is arranged at the input end of the filtering channel; the impedance transformer comprises at least two right-angle bosses formed on one side wall of the lower seat. According to the KU wave band band-pass waveguide filter provided by the utility model, through the arrangement of the lower seat and the upper cover, a single filtering channel can be formed between the input end and the output end, and the inner side plane of the upper cover is attached to the top of the lower seat for assembly, so that the filtering channel can be formed, and meanwhile, the overall size can be reduced.

The invention discloses a glass bottle opening crack detection device and a use method thereof, and relates to the technical field of crack detection, the glass bottle opening crack detection device comprises a mounting rack, the bottom of the mounting rack is provided with a three-jaw chuck, and the three-jaw chuck is used for clamping a glass bottle; the lifting device is mounted at the top of the mounting frame; and the rotary detection device is connected to the bottom of the lifting device. When the lifting device moves downwards to be inserted into the bottle opening, the optical detection unit is driven to rotate, images of the bottle opening at different angles are collected, the limitation that the shooting angle of an annular fixed industrial camera and the included angle between the cameras are fixed in the prior art is broken through, and full-circumference image collection of the bottle opening can be achieved without depending on the layout of multiple sets of fixed cameras; hardware investment of multiple sets of industrial cameras and matched installation structures is reduced, the equipment manufacturing cost is reduced, meanwhile, detection blind areas are eliminated, crack defects of all angles and edge details of the bottle opening are conveniently captured, and the probability of missed detection is reduced.

The application relates to the technical field of cable detection, and discloses a cable insulation thickness detection method and system based on sub-pixel edge enhancement, which comprises the following steps: collecting a cable cross-section image, performing adaptive gray balance and noise suppression processing on the cable cross-section image to obtain an enhanced gray image, constructing a gradient direction histogram based on the enhanced gray image, extracting pixel-level edge candidate points, constructing a sub-pixel fitting and edge gradient confidence weighting graph, strengthening a weak boundary to complete a broken part to generate a complete edge loop, calculating the insulation thickness along the circumferential direction and calibrating and determining, and effectively improving the insulation thickness detection precision and the adaptability to complex working conditions.

The application discloses an automatic production line for electronic tag production and processing, and relates to the technical field of electronic tag production, aiming to solve the technical problem that the burr exceeds the standard and the size deviation is caused by die wear during the stamping forming of the current electronic tag, the traditional detection effect is general, and the defective rate is increased, and the automatic production line comprises a screen brushing machine. In the detection process of the production of the electronic tag, by optimizing the integrated detection equipment, when the electronic tag is detected, the lamp can assist the flexible mirror surface, the image of the electronic tag is reflected, the two sides of the electronic tag are detected at the same time, and the lamp can also illuminate the detail defects of the electronic tag. The application can optimize the detection effect in the stamping process, so that the defects can be detected more accurately, the electronic tag with defects can be returned to work in time, and the production quality is improved.