Patents
Literature
Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

1612 results about "Laser sensor" patented technology

Anisotropic distributed feedback fiber laser sensor

The invention relates to a DFB fiber laser sensor (1). A measurement quantity makes it possible to induce a linear birefringence between mode pairs of the laser-amplifying fiber (2) and to measure an associated beat frequency (Δν1, Δν2, Δν3). According to the invention, the laser-amplifying fiber (2) has a nonrotationally symmetrical structure, so that it is possible to detect isotropic pressures p, acoustic waves or chemical substances that can be added radially to the laser-amplifying fiber (2). In a second aspect of the invention, an emission wavelength range and parameters (a, b, ΔN) of the laser-amplifying fiber (2) and also a grating period L of the fiber Bragg grating resonator (3) are coordinated with one another such that at least two different spatial modes (LP01, LP11even, LP11odd, LP21even) are propagatable and it is possible to measure beat frequencies (Δν1, Δν2, Δν3) between oscillatory longitudinal laser modes assigned to them. Exemplary embodiments relate to: rotationally asymmetrical fiber types, a choice of special spatial modes (LP11odd, LP21even) and/or multiple fiber Bragg gratings (3) for reducing the beat frequencies (Δν1, Δν2, Δν3) below 100 GHz; and elimination of temperature influences e.g. by the detection of a plurality of beat frequencies (Δνa, Δνb, Δνc, Δνd) between different pairs of spatial modes (LP01, LP11even, LP11odd, LP21even) and/or polarization modes (X, Y).
Owner:GE OIL & GAS UK LTD

Laser vision guided automatic welding track tracking system and method

The invention discloses a laser vision guided automatic welding track tracking system which comprises an embedded type industrial personal computer with an image processing device, a laser vision sensor, a welding robot, matched welding equipment and a workpiece clamping workbench; the laser vision sensor is installed on a welding gun in an advanced parallel manner in the welding direction through a laser sensor fixing element; the welding gun is installed on a tail end flange disc of the welding robot through a welding gun fixing element; and the embedded type industrial personal computer is connected with the laser vision sensor through a circuit. The invention also discloses a laser vision guided automatic welding track tracking method. With adoption of the laser vision guided automatic welding track tracking system and method, without the process of teaching in advance, the welding production efficiency and the adaptive ability are improved through real-time detection and tracking; and meanwhile, the problem of tracking lag caused by advanced detection is prevented, and the problem that when a sensor is too near the welding gun, large noise of coupling feature images is caused by factors including strong arc light irradiation, high temperature and smoke dusts, thus the real time and the tracking accuracy of the system are restricted is solved.
Owner:SOUTH CHINA UNIV OF TECH

Laser navigation system applicable to intelligent inspection robot of transformer substation

The invention discloses a laser navigation system applicable to an intelligent inspection robot of a transformer substation, overcoming the problem in the prior art that navigation control positioning precision of the robot still needs to be improved. The laser navigation system comprises the following steps: step 1, configuring the robot; step 2, establishing an environment map; step 3, carrying out a laser navigation positioning test; and step 4, executing tasks at stopping points. In the step 3, a move_base packet in the laser navigation positioning test is used for doing a path plan on the map by utilizing robot position information and real-time obstacle information sensed by a laser sensor, and issuing planning speed information to a movement controller on the bottom layer, so that the robot safely arrives at an appointed target position. The invention provides the laser navigation type intelligent inspection robot of the transformer substation, which is not interfered by a strong electromagnetic field in a transformer substation environment, and is reliable to operate, accurate in navigation positioning, easy to realize and low in development cost.
Owner:ZHENGZHOU JINHUI COMP SYST ENG

Traveling crane positioning system and positioning method

InactiveCN101143686AAccurately run reference dataIntuitive surface informationLoad-engaging elementsVisual BasicData acquisition
The invention relates to an overhead traveling crane positioning system and a positioning method, which adopts an industrial control computer as the core, organically integrates the industrial control computer, data collection cards, a lower computer PLC and a sensor and fully displays the advantages of all the parts. Without changing the design and the control scheme of the original overhead traveling crane, the invention adopts a high-precision laser sensor and an encoder to measure and obtain the distances in the x, y and z directions of the overhead traveling crane, sends the distances into the CPU of the industrial control computer by different types of data collection cards, meanwhile, adopts the OPC technology to read the running status of the overhead traveling crane from the lower computer PLC to an upper computer: the industrial control computer through a CAN-bus, and then composes the data processing and interface display programs in Visual Basic and other high-level languages in the industrial control computer, to real time display the running position and status of the overhead traveling crane, so as to provide precise running data of the overhead traveling crane for the operator and lay a solid research foundation for the overhead traveling crane to be driven without a driver with high precision.
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY

Laser visual tracking system

The invention discloses a laser visual tracking system, which mainly comprises an industrial personal computer, wherein a COM 1 (Component Object Model) port of the industrial personal computer is connected with an X axis motor and a Z axis motor through a motor control and drive circuit; output ends of the X-axis motor and the Z-axis motor are connected with a welding torque; the controller of the welding torque and a welding machine control circuit are connected with the industrial personal computer; the industrial personal computer is also connected with a laser sensor for acquiring information on the welding torque and a workpiece in real time and delivering the acquired information to the industrial personal computer; the laser sensor is a visual sensing module and mainly comprises a camera and a laser diode; the camera is vertically aligned with the workpiece; a laser is slantwise arranged and forms an angle of 30 degrees with the laser; laser emitted by the laser irradiates the workpiece to form a narrow light strip; after the light strip is reflected or refracted by the workpiece, the light strip enters the camera to image, and the image is transferred to the industrial personal computer for processing; after the image is analyzed and processed by the industrial personal computer, an action command is emitted to the welding torque, the X-axis motor and the Z-axis motor.
Owner:CHENGDU XIONGGU JIASHI ELECTRICAL

Automatic feeding device of plunger piston core of automobile fuel injection pump

The invention discloses an automatic feeding device of a plunger piston core of an automobile fuel injection pump. The device comprises a base, a circular disc type electromagnetic vibration hopper, a linear electromagnetic vibration hopper, a plunger piston core direction adjusting mechanical arm, and a sensing and detection device, wherein the circular disc type electromagnetic vibration hopper, the linear electromagnetic vibration hopper and the plunger piston core direction adjusting mechanical arm are arranged on the base; the sensing and detection device is arranged on the linear electromagnetic vibration hopper. The circular disc type electromagnetic vibration hopper comprises a circular electromagnetic vibration hopper base and a spiral material disc connected with the vibration base; the linear electromagnetic vibration hopper comprises a linear vibration base, a linear material groove connected onto the base, and a workpiece movement pneumatic assisting device mounted on the material groove; an outlet end of the spiral material disc is in butt joint with an inlet end of the linear material groove. The direction adjusting mechanical arm is adsorbed on the base by a strong magnetic gauge stand; the sensing and detection device comprises a plunger piston core direction judging optical fiber sensor, and a workpiece in-place and displacement laser sensor. According to the automatic feeding device, the automatic oriented arrangement and transmission of the automobile fuel injection pump can be realized.
Owner:SOUTHEAST UNIV

Method for creating 3D map based on 3D laser

ActiveCN108320329AHigh precisionAvoid the problem of inconvenient filtering and denoisingImage enhancementDetails involving processing stepsInformation processingVoxel
The invention discloses a method for creating a 3D map based on a 3D laser, and belongs to the technical field of data processing. The method comprises the steps of performing rich information processing on point cloud data obtained by a 3D laser sensor to obtain an ordered laser point cloud data frame; performing feature extraction on the point cloud data frame to obtain feature points of the point cloud data frame; optimizing a transformation matrix according to an LM algorithm, and enabling the transformation matrix capable of enabling the sum of squares of distance errors of the matching of all feature points to be the minimum to serve the pose of radar; transforming each frame of the point cloud data into a point cloud map under a global coordinate system according to the pose of theradar, and transforming the point cloud map into a map expressed by voxels. According to the invention, rich information processing is performed on the original laser data, thereby providing a data basis for the creation of the 3D map. The method avoids a problem that it is inconvenient to perform filtering and denoising by adopting a point cloud map through adopting an expression mode of the voxel map, and the definition of the 3D map is improved.
Owner:维坤智能科技(上海)有限公司 +1

End effector for forming holes for aircraft assembly and using method thereof

The invention relates to an end effector for forming holes for aircraft assembly, wherein the end effector is combined with an industrial mechanical arm. The end effector comprises a spindle-feeding module, a dual-eccentric-disk posture adjusting module, a scrap sucking and pressing module, a normal detection module and a visual detection module. The spindle-feeding module comprises a spindle motor, a feeding motor, a ball screw, a drill and the like and achieves the hole drilling function. The dual-eccentric-disk posture adjusting module comprises a posture adjusting motor, a large eccentric disk, a small eccentric disk and the like and achieves the drill posture adjusting function. The scrap sucking and pressing module comprises a pressing air cylinder, a pressing head and the like and achieves the workpiece pressing function and the drilling and cutting scrap sucking function. The normal detection module comprises a laser sensor and the like and achieves the function of calculating the normal direction of a hole forming point. The visual detection module comprises an industrial camera and the like and achieves the function of displaying the hole forming effect in real time. After the end effector is combined with the industrial mechanical arm, the error of perpendicularity of a hole in the hole forming process can be smaller than 0.5 degree, and according to the hole forming efficiency, five to six holes can be formed per minute. Not only is the hole forming quality for aircraft assembly improved, but also labor force is greatly reduced.
Owner:SHANGHAI AIRCRAFT MFG +1
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products