Abstract: A method for manufacturing a multi-stage compound eye lens includes the steps of manufacturing a micropillar array using a photoetching method, then sputtering ZnO on the surface of the micropillar array, jet printing an ultraviolet curing adhesive onto gaps in the micropillar array using a micro jet printing machine, and controlling the morphology of microlens using the number of droplet dropping instances to obtain a microlens array; further respectively dissolving hexamethyl tetramine and zinc nitrate in deionized water, then pouring the hexamethyl tetramine solution into the zinc nitrate solution to obtain a mixed solution, placing the microlens array into the mixed solution, and placing is in a water bath kettle for a water bath, and finally, removing the microlens array from the mixed solution, rinsing it with deionized water, and drying same to obtain the multi-stage compound eye lens.

Abstract: An air-blowing roller includes: a roller body, where a plurality of air outlets are disposed on an outer peripheral surface of the roller body, the plurality of air outlets are arranged along an axial direction of the roller body, an air exhaust direction of the air outlets is tangent to the outer peripheral surface of the roller body, and air exhaust directions of the plurality of air outlets are consistent. A dust removal apparatus includes a conveyance mechanism, an air-blowing roller assembly, and an air intake roller assembly.

Abstract: This application provides a displacement detection method for anode composite strip. The anode composite strip includes an anode plate and a separator attached to a surface of the anode plate, where the anode plate includes positioning holes. The displacement detection method includes: step S1000: obtaining an image of a portion of the anode composite strip including the positioning holes; and step S2000: calculating a displacement characteristic quantity based on the image, where the displacement characteristic quantity includes any one or any combination of a width direction displacement, a strip movement direction displacement, and a displacement angle.

Abstract: An Overhang detection method for a battery electrode sheet includes acquiring an image of a battery electrode sheet; determining the locations of a plurality of electrode sheet edges in the image, wherein the plurality of electrode sheet edges are electrode sheet edges related to an Overhang measurement value corresponding to the image, the location of each electrode sheet edge is determined on the basis of an area where each electrode sheet edge is located, and the area where each electrode sheet edge is located is a dynamically determined area; and determining, according to the locations of the plurality of electrode sheet edges, the Overhang measurement value corresponding to the image.

Abstract: Disclosed is a method for printing a silver nanowire harness network structure by using a glue dispenser, including the following: 1) constructing an induced PET substrate: modifying a PET substrate by a surface hydrophobic treatment method to enhance the binding force between nanowires and the PET substrate and enhance the conductivity of a nanowire network structure; 2) constructing a glue dispensing printing system and printing the nanowire harness network structure: fixing the glue dispenser to a worktable, fixing a printed PET substrate to a ufab three-dimensional moving platform for controlling the movement of the PET substrate, adjusting the moving speed of the ufab three-dimensional moving platform and the distance between a needle head and the PET substrate, controlling the glue dispensing air pressure and the glue dispensing amount of silver nanowire glue by the glue dispenser, and obtaining the nanowire harness network structure on the PET substrate.

Abstract: The present disclosure falls within the technical field of communications, and specifically discloses an external triple-frequency antenna for an unmanned aerial vehicle, including a substrate, vibrator circuits, and a feed line. Preferably, the vibrator circuits are disposed on the substrate. The vibrator circuits include a high-frequency vibrator circuit, a middle-frequency vibrator circuit, and a low-frequency vibrator circuit; a shared microstrip line is disposed between the middle-frequency vibrator circuit and the low-frequency vibrator circuit; the feed line includes a first feed line and a second feed line, where the first feed line is connected to the high-frequency vibrator circuit; and the second feed line is connected to the shared microstrip line, and a capacitor is disposed at the connection of the second feed line and the shared microstrip line.

Abstract: An Overhang detection method for a battery electrode sheet includes acquiring an image of a battery electrode sheet; determining the locations of a plurality of electrode sheet edges in the image, wherein the plurality of electrode sheet edges are electrode sheet edges related to an Overhang measurement value corresponding to the image, the location of each electrode sheet edge is determined on the basis of an area where each electrode sheet edge is located, and the area where each electrode sheet edge is located is a dynamically determined area; and determining, according to the locations of the plurality of electrode sheet edges, the Overhang measurement value corresponding to the image.

Abstract: A stacking device may include a negative delivery structure, a separator delivery structure, a first heater and a positive delivery structure. The negative delivery structure may be configured to deliver a negative electrode sheet. The separator delivery structure may be configured to deliver separators to two sides of the negative electrode sheet such that the separators are attached to the negative electrode sheet. The first heater may be arranged downstream of the separator delivery structure and configured to heat the negative electrode sheet and the separators. The positive delivery structure may be arranged downstream of the first heater and configured to deliver positive electrode sheets to the two sides of the negative electrode sheet such that the positive electrode sheets are attached to the separators.

Abstract: The present disclosure provides an antenna, a wireless signal processing device, and an unmanned aerial vehicle. The antenna includes: a substrate having a flat first surface; a first radiation portion disposed on the first surface of the substrate, the first radiation portion comprising a first radiator and a second radiator, and the second radiator being located behind the first radiator; and a second radiation portion disposed on the first surface of the substrate. The second radiation portion includes: a third radiator; and the third radiator being disposed proximate to the second radiator and having a proximate frequency and radiator arm effective length to couple the third radiator with the second radiator. The antenna adopts reasonable wiring and structural design and can be implemented on a base material with a small volume.

Abstract: Provided are an electrode assembly, a battery cell, a battery and an electrical device, belonging to the technical field of battery manufacturing. The electrode assembly comprises: a first electrode sheet, comprising a plurality of bending segments and a plurality of stacking segments arranged in layers, wherein each bending segment is configured to connect two adjacent stacking segments, the first electrode sheet has a first broken seam, and the first broken seam extends in the width direction of the first electrode sheet to break the first electrode sheet; and a plurality of second electrode sheets, wherein the polarity of the second electrode sheet is opposite to the polarity of the first electrode sheet, and each second electrode sheet is arranged between two adjacent stacking segments in the stacking direction of the plurality of stacking segments.

Abstract: The present disclosure relates to the field of remote controller technologies and discloses a protective cover for a control stick and a remote controller. The control stick protective cover includes: a first elastic member, where a first accommodation groove is provided in a middle of the first elastic member, and the first accommodation groove is configured to mount the control stick; a second elastic member, arranged around the first elastic member, where the second elastic member is fixed to a panel of the remote controller; and a buffer member, connected between the first elastic member and the second elastic member, where the buffer member is provided with a bent portion.

Abstract: The present disclosure provides an antenna, a wireless signal processing device, and an unmanned aerial vehicle. The antenna includes: a substrate having a first surface and a second surface opposite the first surface; a first radiator and a second radiator disposed on the first surface, the first radiator and the second radiator facing opposite each other, the first radiator being located at one end near a head of the substrate, and the second radiator being located at one end near a root of the substrate; a third radiator disposed on the second surface, the third radiator being mirror symmetric with a portion of a structure of the first radiator and conducting with the second radiator, so that the first radiator, the second radiator and the third radiator form a coupled resonance point; and a feed line connected with the first radiator, the second radiator and the third radiator.

Abstract: The present disclosure provides a dual-band external antenna for an unmanned aerial vehicle (UAV) and a UAV. The dual-band external antenna for the UAV includes a substrate, a low-frequency oscillator region, a high-frequency oscillator region, a feed coaxial line and ground terminals. Two ground terminals are respectively electrically connected to a feed terminal of the feed coaxial line. An avoidance region for arranging the feed coaxial line is disposed in the low-frequency oscillator region or the high-frequency oscillator region. The low-frequency oscillator region includes a first low-frequency oscillator region and a second low-frequency oscillator region. The high-frequency oscillator region includes a first high-frequency oscillator region and a second high-frequency oscillator region that are vertically asymmetrically disposed on the front and back sides of the substrate.

Abstract: A blade driving apparatus configured to drive a blade of a cutting device to cut a web and includes an anvil and a slide assembly. The slide assembly includes a slide rail and a slide block that are slidably connected to each other. The slide block is connected to the anvil, and the slide block and the anvil move back and forth relative to the slide rail along a travel direction of the web. At least one of the slide rail or the slide block is made of a non-metallic material.

Abstract: A coupling apparatus for coiled tubings of different diameters includes a bottom joint, a top joint, and a back cap, where a gapped slip sleeve is provided on a fitting ring groove on an outer side of an upper portion of the bottom joint, and the gapped slip sleeve is coupled with the bottom joint via a rotation preventing element capable of preventing radial rotation of the gapped slip sleeve.

Abstract: Disclosed is a coupling apparatus for coiled tubings of different diameters, an installing method for the coupling apparatus, and an installing method for tubings of different diameters. The coupling apparatus includes a bottom joint, a top joint, and a back cap, where a gapped slip sleeve is provided on a fitting ring groove on an outer side of an upper portion of the bottom joint, and the gapped slip sleeve is coupled with the bottom joint via a rotation preventing element capable of preventing radial rotation of the gapped slip sleeve. The coupling apparatus allows for easy installation and simple maintenance, and coupling coiled tubings of different diameters at the same wellhead with less difficulties, and provides enhanced resistance to tension and torque to avoid piercement and improve safety. The installing method includes retaining the top joint with a large diameter coiled tubing.