7results about How to "Mature processing technology" patented technology

The application provides a glass with energy-saving and wireless communication frequency band enhancement functions, comprising periodically arranged FSS units, each of which comprises an infrared low emission layer, an air layer and a wave-transparent FSS layer, the infrared low emission layer comprising a first glass layer and a first dielectric substrate; the surface of the first glass layer is provided with a first etching layer; the first etching layer comprises a plurality of grid grooves; the wave-transparent FSS layer comprises a second glass layer, a second dielectric substrate and a third glass layer; the surface of the second glass layer is provided with a second etching layer; the second etching layer comprises an annular groove and a plurality of cut grooves arranged on the circumferential side of the annular groove; the surface of the third glass layer is provided with a third etching layer; and the third etching layer is provided with a second annular patch. The structure can realize the effects of wave-transparent communication frequency band and infrared low emission, has visible light transparency, meets certain thickness and is suitable for large-area paving.

This invention discloses an automatic screwdriver bit mounting shaft structure, including a shaft body. The rear end of the shaft body is provided with a motor connection part for connecting to the drive shaft of a screwdriver motor. The front end of the shaft body is provided with a bit mounting part extending axially. The side wall of the bit mounting part is provided with a central rectangular groove extending axially. The central rectangular groove is used to mate with the central flat part of a central flat bit. This invention integrates three independent torque transmission structures—a central rectangular groove, an eccentric rectangular groove, and an end rectangular groove—on the same mounting shaft, which can simultaneously adapt to three mainstream bit types: central flat, notched, and double-ear. Different types of bits can be freely switched without changing the mounting shaft, simplifying the operation process, improving work efficiency, and reducing the number of accessories, thus lowering usage and management costs.

The application discloses a motor-driven closing and opening cover lock, characterized in that the motor-driven closing and opening cover lock comprises a shell assembly, a lock block assembly, a closing and opening mechanism and a driving assembly; the shell assembly comprises a shell and a mounting plate which are fixed to each other; the lock block assembly comprises a ratchet wheel and a pawl which are rotatably installed on the shell assembly, and an elastic member which provides a reset force for the ratchet wheel and the pawl; the closing and opening mechanism comprises a slider which is reciprocally slidably installed on the shell assembly, and a cam which is installed on the slider; and the driving assembly comprises a closing pull wire and an electric opening pull wire which are electrically connected with a door lock controller; wherein the closing pull wire and the electric opening pull wire are connected with the slider, and through bidirectional sliding of the slider on the shell assembly, the ratchet wheel or the pawl is driven to move, so that the motor-driven closing and opening cover lock realizes the functions of motor-driven closing and motor-driven opening. Through bidirectional movement of a single slider, the motor-driven closing and opening cover lock realizes two core functions of motor-driven closing and motor-driven opening in an integrated manner, and the structure is highly simplified.

This invention provides a low-line-count lidar, belonging to the field of lidar technology, comprising: a housing, a PCBA, an integrated transceiver module, and a multi-faceted scanning mirror; horizontal scanning of the light beam is achieved by rotating the multi-faceted scanning mirror; after the light beam is reflected by reflective surfaces at different tilt angles, different exit angles are generated in the vertical direction, thereby generating multi-line scanning; the number of lines and vertical field of view of the lidar can be flexibly configured by adjusting the number of reflective surfaces and the tilt angle; the overall architecture of this invention is scientifically simple, safe and reliable in operation, requires only one transceiver module, significantly reducing the number of lasers and detectors; it reduces size and is suitable for vehicle-mounted, robotic, and other scenarios; only single-channel transceiver module calibration and standardization are required, making calibration less difficult than for multi-channel systems.

The application belongs to the field of micro-nano photonics and infrared sensing, and relates to an infrared broadband absorption metasurface structure. A structure of metal layer-dielectric layer-metal layer is adopted, the upper and lower metal layers adopt platinum, the dielectric layer uses traditional material silicon, and array arrangement is realized by combining different size sub-units, an infrared broadband absorption metasurface based on a square bevel structure is designed, and an average absorption rate of more than 60% in the 8-13um atmospheric window band is realized. The bottom metal and the dielectric layer are uniform layer structures, and the top metal layer adopts a square bevel of one angle, the ratio of the bevel to the square side length is related to the absorption wavelength. The application regulates the light field based on micro-nano structure parameter change, has good wavelength selectivity and modulation performance, the selected material has good chemical stability, and has practicability and process compatibility.

This invention discloses a segmented skeleton-type flexible current transformer, relating to the field of current measurement technology. The invention aims to solve the technical problems of traditional rigid current transformers, such as inconvenient installation, incompatibility with Rogowski coil outputs, low accuracy, and excessive errors at the joints of existing flexible current transformers. The transformer core employs differentiated impregnation treatment; the middle flexible main body section is not impregnated to maintain flexibility, while the rigid connecting sections at both ends are impregnated, cured, and have smooth connecting surfaces. Multiple I-shaped skeletons are fixed at equal intervals on the flexible main body section, with air gaps reserved between adjacent skeletons. Independent secondary windings wound on each skeleton are connected in series to form a single closed loop. Locking docking mechanisms are provided at both ends to form a closed magnetic circuit. An auxiliary compensation winding connected in the same direction is fixed on the rigid connecting section to compensate for measurement errors at the magnetic circuit connection point. This invention allows for uninterrupted winding installation, direct output of standard current signals without auxiliary power, full-circuit measurement accuracy of 0.5%, simple and reliable structure, and is suitable for power distribution upgrades and current measurement in confined spaces.

The invention discloses a fiber bragg grating ice force sensor integrated with a simply supported beam structure and a force measuring method thereof. The fiber bragg grating ice force sensor comprises a beam body, a fixed support and an optical fiber, the two ends of the beam body are installed on the fixed supports to form a simply supported beam structure. One surface, directly bearing an ice force load, of the part, located between the fixed supports, of the beam body is a stress surface, and the other surface opposite to the stress surface is an optical fiber mounting surface; and the optical fiber is mounted on the optical fiber mounting surface of the beam body. When the stressed plate is subjected to ice force, displacement and strain are generated, the beam body is driven to be bent and deformed in a simply supported beam mode, the optical fiber connecting piece fixed to the beam body generates tiny displacement accordingly, the fiber bragg grating in the optical fiber connected with the optical fiber connecting piece generates axial strain, and therefore the Bragg wavelength of the fiber bragg grating drifts; and the size and direction of the ice force can be obtained through inversion by monitoring wavelength change. According to the invention, the metal beam body and the fiber grating sensing element are highly integrated, the structure is compact, the weight is light, and installation and arrangement on a laboratory ice force experiment model are facilitated.