10results about How to "Coupling stability" patented technology

The invention discloses a ring piece ultrasonic detection noise reduction and identification method and system and a computer storage medium. The method comprises the steps that a matched ultrasonic phased array probe is selected according to the shape and size of the cross section of a workpiece, and technological parameters are set and comprise at least one of the probe frequency, the number of array elements, the water layer height and the focusing depth; according to the selected ultrasonic phased array probe and process parameters, ring piece water immersion ultrasonic phased array detection is carried out, full-coverage scanning is carried out in a weld joint area, and the scanning position of the probe is recorded in real time through an encoder; in the scanning process, an ultrasonic image scanned by the phased array probe is collected in real time, and the ultrasonic image is transmitted to a pre-trained adaptive noise reduction YOLOv5 target detection model for defect recognition; and the rotating angle position of the ring piece is recorded in real time through an encoder, and when the target detection model finds defects, the defect position is recorded, and alarm information is generated. The method is suitable for ring piece ultrasonic detection noise reduction and recognition, the defect recognition accuracy can be improved, and the manual labor intensity is reduced.

The invention discloses a light path self-adjusting gas expansion laser-induced fluorescence detection device and method, and relates to the technical fields of optics, automatic control, atmospheric environment monitoring and the like. A light inlet head of N optical fibers is fixed on an optical fiber automatic coupler, and laser emitted by a light source module is selected to be coupled into a certain optical fiber; the optical fiber is used as a transmission optical fiber and transmits the laser into the sampling measurement module; the automatic optical fiber replacing device is fixedly provided with the light-emitting head necks of N optical fibers, and the light-emitting head of the transmission optical fiber is selected to be input into the automatic adjusting collimator; the automatic adjusting collimator is used for fixing a light emitting head of the transmission optical fiber and adjusting the collimation distance of the transmission optical fiber so as to output a collimated light beam; the automatic adjusting beam splitter is used for coaxially adjusting the collimated light beam output from the automatic adjusting collimator into the sampling measurement module; the sampling and measuring module is a place where the collimated light beam and the active intermediate intersect to generate fluorescence, and is used for collecting a fluorescence signal; the monitoring control system is used for monitoring the energy of the laser in each part of the detection device, controlling the operation of the optical fiber automatic coupler, the automatic optical fiber changer, the automatic adjusting collimator and the automatic adjusting beam splitter, and calculating and processing a fluorescence signal output by the sampling and measuring module to finally obtain the real-time concentration data of the active intermediate. The invention aims to realize automation of optical fiber replacement and optical path adjustment processes, so that the operation stability of a gas expansion laser-induced fluorescence detection technology is improved, and unattended operation is realized.

The invention relates to a novel combined coupling FA structure used in an optical communication optical fiber array. Relates to the field of communication product manufacturing. The structure is composed of a fixing structure, an FAU1 structure and an FAU2 structure. The front end of a V groove of the FAU1 structure is lengthened to form an optical fiber for bearing the protruding part of the FAU2 structure. The FAU1 / FAU2 structure and the fixed seat are provided with V-shaped guide grooves at equal intervals; fAU1 and FAU2 are independently assembled and processed, a designed positioning rod is placed in a V-shaped guide groove of a fixed seat, a positioning V-shaped groove of an FAU1 structure is stacked and fixed on the fixed seat according to position requirements, a positioning V-shaped groove of an FAU2 structure is stacked on the fixed seat, the FAU1 structure is lightly pushed to enable a protruding optical fiber part to extend into a bearing table of the FAU2 structure, and the FAU2 structure is fixed on the fixed seat. Relevant coupling performance parameters are confirmed, and dispensing and curing are carried out after requirements are met, so that the coupling process is completed; therefore, efficient, rapid and accurate positioning is achieved.

The invention discloses a radio frequency chip integrated packaging structure and technology, and the structure comprises the following steps: carrying out the primary packaging of a first line which is parallel and is uniformly arranged at intervals, and forming a first packaging layer; holes are drilled in the surface of the first encapsulation layer to expose all end points of the first lines, metal is electroplated on the exposed end points to fill the drilled holes, wiring connecting columns are electroplated on a set of diagonal end points arranged on the two edge first lines, and first stand columns are electroplated on the other exposed end points; electroplating a wiring layer on one surface of the encapsulation layer, and electrically rearranging the wiring connecting columns; the electrical end of the bare chip is electrically connected and mounted with the corresponding wiring layer, and the bare chip and the wiring layer are encapsulated again to form an encapsulation layer II; drilling holes in the surface of the encapsulation layer II to expose the end points of the upright posts I, and electroplating upright posts II on the exposed end points to fill the drilled holes; the bare chip is located in the geometric center of the three-dimensional coil, the induction current and the signal intensity are optimal, the three-dimensional coil has the more omnidirectional induction characteristic, and stable coupling can be kept.

The invention discloses a method for coupling a distributed feedback laser and an electric absorption type modulator waveguide, which comprises the following steps of: taking a substrate with an electric absorption type modulator and a waveguide, and forming a self-alignment microcavity with a positioning structure on the substrate; manufacturing a microcavity metal film electrode and a solder layer in the self-aligned microcavity; making a self-alignment mark on the distributed feedback laser; the distributed feedback laser is placed in the self-alignment microcavity, and self-alignment high-precision optical path coupling of the distributed feedback laser and the electric absorption type modulator waveguide is completed by adopting a back-off welding bonding process. In the invention, the self-alignment microcavity with a positioning structure is manufactured on the substrate and the self-alignment mark is manufactured on the distributed feedback laser to carry out self-alignment on-chip heterogeneous integration on the DFB and the EAM, so that efficient, stable and compact optical path coupling is realized, and the device has the advantages of high coupling efficiency, low cost, short period and compact structure; the method is an ideal choice for realizing excellent monochromaticity and a high-speed modulation light source.

This invention relates to the field of concrete coating thickness detection technology, and discloses an intelligent detection system for bridge concrete coating thickness, comprising: an intelligent detection terminal module for performing dynamic coupling calculations of temperature, humidity, and sound velocity, coating thickness calculation and defect identification, storing data from the entire detection process, and generating a color thickness cloud map and a complete report; a dual-frequency magnetic ultrasonic probe module for emitting dual-frequency ultrasonic signals, acquiring echo data from the coating-concrete interface, and obtaining real-time environmental temperature, humidity, and concrete moisture content, enabling magnetic fixation of the probe and automatic replenishment of coupling agent; and a UAV collaborative control module for carrying the dual-frequency magnetic ultrasonic probe module to an area at a height greater than 10m above the bridge, generating a three-dimensional point cloud model of the bridge and dividing it into a detection grid. By using the UAV collaborative control module to carry the dual-frequency magnetic ultrasonic probe module to an area at a height greater than 10m above the bridge, scaffolding or suspended platforms are eliminated, reducing the risks associated with manual operation.

The utility model relates to the technical field of showcase lighting, specifically relates to a light guide plate mounting assembly suitable for showcase, including aluminium frame, limiting component, limiting component installs in one side of aluminium frame, and limiting component is used for fixed position of light guide plate, heat dissipation component, heat dissipation component installs in one side of aluminium frame, and heat dissipation component is used for heat dissipation. Compared with prior art, the application realizes automatic position limiting and firm fixing of light guide plate through the combination of limiting component and elastic compression structure, realizes the high -efficient heat dissipation of LED light source through the setting of heat dissipation component and air convection channel, prolongs light source life and guarantees the temperature stability inside showcase, and simultaneously, the installation and maintenance are simple and convenient, improve the uniformity and reliability of the overall lighting effect of showcase.

The invention discloses a split type recycling and laying device for an unmanned ship under high sea conditions. The split type recycling and laying device comprises a split type cradle structure. The split cradle structure comprises an upper-layer platform and a lower-layer cradle; the lower end face of the upper-layer platform is connected with the lower-layer cradle through a rope length adjusting device and four lifting chain slings; an accommodating space with an unmanned ship limiting device is arranged in the lower-layer cradle, and the accommodating space is used for parking an unmanned ship; the four corners of the upper end face of the upper-layer platform are each connected with a second sling, the upper ends of the four second slings are each connected with a sub-ring, the four sub-rings are connected to a hanging ring, and the hanging ring is used for being connected with a mother ship crane. The split type recycling and laying device for the unmanned ship under the high sea condition and the using method have the advantages of being stable and accurate in control, wide in applicability and easy to operate.

The invention relates to a hydraulic type torsion seismic source vibrator which is composed of a flat plate, a stand column, a heavy hammer, a piston rod, an upper seal, a lower seal and a top plate. Conical and spherical teeth are mounted at the bottom of the flat plate; the upright is fixedly connected with the flat plate; the heavy hammer is matched with the piston rod; the upper seal and the lower seal are respectively matched with the piston rod and cannot rotate relatively; the heavy hammer is respectively matched with the upper seal and the lower seal and can rotate relatively; the top plate is fixedly connected with the columns. Different oil inlet holes are selected for oil feeding, so that the heavy hammer rotates around the piston rod in a reciprocating mode, reaction torque is generated and transmitted to the piston rod at the same time, then the reaction torque is transmitted to the ground through the flat plate connected with the piston rod, and therefore torsion excitation is achieved.

The invention discloses a large-diameter seamless pipe end online flaw detection device which comprises a plurality of rotating riding wheel mechanisms, two lifting pressing wheel mechanisms, two pipe end flaw detection mechanisms, two plug pieces and a control terminal. The multiple rotating riding wheel mechanisms are sequentially arranged in the transverse direction and used for jointly supporting the non-end portion of the same large-diameter seamless pipe and jointly driving the same large-diameter seamless pipe to rotate around the transverse axis of the rotating riding wheel mechanisms. The two pipe end flaw detection mechanisms are respectively provided with two coupling flaw detection ends for performing ultrasonic flaw detection after being coupled with the lower ends of the two ends of the same large-diameter seamless pipe, and each pipe end flaw detection mechanism comprises a transverse driving part for driving the corresponding coupling flaw detection end to move in the transverse direction and a vertical driving part for driving the corresponding coupling flaw detection end to move in the vertical direction. According to the invention, the whole end part of the large-diameter seamless tube can be subjected to ultrasonic flaw detection, and the coupling flaw detection end can still keep stable medium coupling at the tail end of the large-diameter seamless tube, so that the length of a flaw detection blind area is reduced to be absolutely zero, and manual detection is completely avoided.