摘要：
The invention relates to the technical field of optical fiber amplifiers, and specifically relates to a polarization-maintaining rare earth doped optical fiber amplifier that comprises a case; a plurality of strip-shaped through holes which are distributed at equal intervals are formed in the top, close to the edge of the front side, of the case; a dustproof device is arranged at the top of the case and located over the strip-shaped through hole, the dustproof device comprises a mounting bin, a U-shaped fixing plate is arranged in the mounting bin, first primary filter cotton is arranged between the two sides of the inner wall of the U-shaped fixing plate, and a first activated carbon filter plate is further arranged between the two sides of the inner wall of the U-shaped fixing plate. According to the polarization-maintaining rare earth doped optical fiber amplifier, external particulate matters can be effectively filtered through filtration of the first primary filter cotton in the dustproof device, and external particulate matters and harmful gases can be filtered through the first activated carbon filter plate, so that the safety of internal devices of the optical fiber amplifier is protected.
摘要：
The invention relates to the technical field of optical fiber amplifiers, and particularly, relates to a multiband rare earth doped optical fiber amplifier, which comprises an optical fiber amplifierbody. A protection device is arranged outside the optical fiber amplifier body. The protection device comprises a lower protection housing and an upper protection housing. Two first semicircular grooves are formed in the positions, close to the front side, of the top wall of the lower protection housing and the bottom wall of the upper protection housing. The top wall of the lower protection housing and the bottom wall of the upper protection housing are each provided with two second semicircular grooves close to the rear side, the front side wall of the optical fiber amplifier body is provided with a signal input end and a signal output end close to the left side and the right side respectively, the signal input end and the signal output end are of the same structure, and the rear side wall of the optical fiber amplifier body is provided with a power connecting wire. The base is arranged under the protection device. According to the multiband rare earth doped optical fiber amplifier,dust can be effectively prevented from falling onto the optical fiber amplifier body, and the service life of the multiband rare earth doped optical fiber amplifier is prolonged.
摘要：
The invention belongs to the technical field of medical diagnosis. The invention discloses a health analysis system and method based on face and hand recognition and big data. The health analysis system comprises a face image acquisition module, a fingerprint acquisition module, a body state acquisition module, an identity recognition login module, a display module, a central processing module, awireless signal transceiving module, a cloud server, a data storage module, a health assessment module, a health state query module and an early warning module. By arranging the face image acquisitionmodule and the fingerprint acquisition module, corresponding face images and fingerprint information can be adopted, and the accuracy of identity authentication is improved; by arranging the body state acquisition module, body index parameters of a detected person are acquired, comprehensive detection of the detected person is achieved, and the comprehensive accuracy of body state evaluation is improved; and meanwhile, a face image processing method of the face image acquisition module improves the face recognition efficiency of the detected person.
摘要：
The invention discloses a computer drawing control system for artistic design based on the Internet, and particularly relates to the field of computer drawing. The system comprises a display module; an energy supply module is arranged at the input end of the display module, a modeling module is arranged at the output end of the display module, an operation module is arranged at the input end of the modeling module, a background module is arranged at the output end of the operation module, and the output end of the background module is connected with the input end of the display module. Througha memory module, a storage module, an infrared sensor and an operation module, the receiving signals of the infrared sensors are cut off in sequence in the drawing process; the infrared sensors can store time and frequency for cutting off signals; when data need to be found, the data stored by the infrared sensors are restored, the infrared sensors emit memory signals to form a track to restore adrawing, and the safety of a computer for storing drawing data is improved.
摘要：
The invention discloses a molding device for an electrical connector buckle of a switch cabinet. The molding device comprises a base and a molding mechanism, and further comprises a positioning mechanism and a conveying mechanism, wherein the molding mechanism is arranged on the base used for molding a connector on the base; the positioning mechanism is arranged on one side of the base, and used for guiding and limiting a coiled material; and the conveying mechanism is arranged on the base, used for conveying the coiled material, and arranged between the positioning mechanism and the molding mechanism. Through the arrangement of the positioning mechanism, the coiled material can be positioned on the same horizontal line as the working area of the molding mechanism before being fed; then, through the further limiting and pushing action of the feeding mechanism, the coiled material can stably enter the molding mechanism; and accordingly, the processing quality and efficiency can be improved, and the product scrap rate can be improved.
