6results about How to "Reduce reception" patented technology

The invention relates to the technical field of adaptive optics, and particularly provides a wavefront detection system for a dark and weak target under a strong sky background, the wavefront detection system comprises a Shack-Hartmann wavefront sensor system and a wavefront detection processing unit, the Shack-Hartmann wavefront sensor system carries out wavefront detection on a short wave infrared band of 1.3-1.7 [mu] m, and the wavefront detection processing unit carries out wavefront detection on the short wave infrared band of 1.3-1.7 [mu] m. And the wavefront detection processing unit corrects a sub-aperture image obtained by detection through a weighted self-threshold local contrast algorithm, performs self-threshold operation on pixels in a center unit according to a gray scale ratio weight of the center unit and a background unit of the sub-aperture image, introduces an energy weight to eliminate PNHB noise, and reconstructs a centroid of the sub-aperture image. According to the invention, a Shack-Hartmann wavefront sensor system is applied to a short-wave infrared band, so that a sky background spectrum is effectively blocked, the target brightness is ensured, background light radiation photons received by a detector are reduced to the greatest extent, various noises and background interferences are inhibited by optimizing a threshold algorithm, and the wavefront detection precision is remarkably improved.

The application discloses a floating fish-light complementary system, which comprises a support unit, a photovoltaic assembly fixed on the support unit, a net cage, a net-retrieving assembly, and a sinker. The net cage comprises a floatable float located at the upper end of the net cage and connected with the support unit, a sinker located at the lower end of the net cage and extending around the central axis of the net cage, and a net cover covering at least the bottom and the side wall of the net cage. The net-retrieving assembly comprises a plurality of second pull ropes distributed along the circumferential direction of the net cage, the second pull ropes being connected with the sinker and a first rope-retrieving device arranged at the upper end of the net cage and capable of pulling the second pull ropes. The application provides a floating fish-light complementary system, which can culture aquatic products in the net cage and catch fish in the net cage, thereby reducing the fishing area and improving the fishing efficiency. Moreover, the net cage is retractable, which further reduces the workload of fishing operation and improves the fishing efficiency.

The invention discloses an intelligent marketing distribution system and method based on deep learning and related equipment. The method comprises the following steps: acquiring a channel error code and short message subsequent data; performing data statistics and analysis on the obtained error codes of the corresponding channels, storing the error codes in a database, and storing short message subsequent data in the database; automatically classifying each channel error code through a deep machine learning algorithm, and obtaining mark information of each channel error code; associating each channel error code with the error code classification type and taking the associated channel error code as channel error code classification information; based on the short message subsequent data, obtaining a recommended channel group and the number of channels in the recommended channel group through data analysis and mining; and distributing the short message marketing task according to the channel weight of the recommended channel group, and if distribution fails, automatically triggering a corresponding personalized strategy mechanism according to the channel error code classification information. According to the method, a personalized solution for the error is provided for the user who fails to reach the channel, and the user experience is improved.

The invention relates to the technical field of anti-loosening detection, in particular to an expansion sleeve loosening detection device which comprises a speed reducer shell A and a speed reducer shell B. An output shaft is installed between the inner wall of the speed reducer shell A and the inner wall of the speed reducer shell B. One end of the output shaft is sleeved with an expansion sleeve shell. The sides, away from each other, of the speed reducer shell A and the speed reducer shell B are each provided with an induction protruding block, and photoelectric induction switches are arranged on the sides, away from each other, of the speed reducer shell A and the speed reducer shell B and located above the two induction protruding blocks. Through cooperation of the photoelectric sensing switch and the sensing convex block, when the sensing convex block rotates to one side of the photoelectric sensing switch, the photoelectric sensing switch converts a photoelectric signal into an electric signal, the electric signal is remotely transmitted to the main control PLC, the PLC carries out calculation through period comparison of the electric signals on the two sides, the time difference of rotation on the two sides can be automatically calculated, and the rotation speed of the two sides can be calculated; therefore, the output synchronism of the speed reducer can be judged, and the loosening condition does not need to be judged manually.

The invention relates to the technical field of partial discharge verification anti-interference, and particularly discloses a GIS ultrahigh frequency partial discharge sensor antenna and a partial discharge signal noise reduction method, and the sensor antenna comprises an antenna substrate, a sensor interface, a housing provided with a pit, and an antenna body used for collecting an ultrahigh frequency partial discharge signal of a GIS. The antenna substrate covers the pit of the shell to form a target cavity; the antenna body is arranged on the antenna substrate, the sensor interface is arranged on the shell, and the sensor interface is used for receiving a target partial discharge signal collected by the antenna body and transmitting the target partial discharge signal when an antenna termination angle of the antenna body is adjusted to a target angle. The terminal angle of the sensor antenna is changed, and the anti-interference shell is additionally arranged on the outer side of the sensor antenna, so that the sensor is in one-way radiation, the antenna noise frequency band signal gain is changed to avoid common ultrahigh-frequency electromagnetic noise, receiving of external partial discharge signals is reduced, and the signal gain of the partial discharge sensor is improved; and the detection sensitivity is improved.

The invention relates to a spraying device for production of a trimmer shell. Comprising a spraying box, and the top end of the spraying box is rotationally connected with a cover plate; the top end of the cover plate is fixedly connected with a sealing rubber strip; an observation window is formed in the side wall of the spraying box; a water outlet is fixedly connected to the side wall of the spraying box; the side wall of the spraying box is fixedly connected with a pair of storage boxes; a pair of nozzles is arranged on the inner side wall of the spraying box; the spray head is connected to the storage box through a pipeline; the bottom end of the spraying box is rotationally connected with a first fixing rod. The side wall of the first fixing rod is fixedly connected with a pair of electric push rods; the side wall of the first fixing rod is slidably connected with a supporting ring. The supporting ring is pushed through the electric push rod, so that the ejector rod forms uniform supporting force on the inner side of the shell, the shell can be quickly fixed, the preparation time is shortened, and the defects after spraying caused by the fact that a clamp shields an outer spraying surface during spraying of a spray head due to clamping and fixing from the outer side during shell fixing are reduced.