30results about How to "Improve coincidence accuracy" patented technology

A solid-state imaging device (1) includes a supporting substrate (3) that includes a concave portion (2), a solid-state imaging chip (4) that is bonded on the supporting substrate (3) so as to seal the concave portion (2) in a view-angle region, a stress film (5) that is formed on the surface of the solid-state imaging chip (4), and an imaging surface curved toward the concave portion (2) at least in the view-angle region.

The invention relates to a method and a system for determining a homography matrix and an image conversion method and a system thereof. The method for determining the homography matrix comprises the following steps: dividing the fisheye image and the reference image into the same regions, and making the size of the sub-regions in the divided fisheye image and the corresponding sub-regions in the reference image be the same, and the size of the fisheye image and the reference image be the same; Selecting a sub-region in the fisheye image as an initial sub-region, calculating a homography matrixof the initial sub-region according to the sub-region corresponding to the sub-region in the reference image; The homography matrices of the other subregions are calculated from the center of the initial subregion. The embodiment of the invention adopts the mode of dividing regions and each sub-region corresponds to a homography matrix respectively, which has high image coincidence accuracy, andavoids the problem that in the prior art, the whole fish-eye image adopts only one homography matrix, resulting in low image coincidence accuracy of the fish-eye camera.

The invention discloses an overlapping sewing device which comprises a feeding plate, a storage plate, a driving device, a visual system, a rotating device and a manipulator. The feeding plate and the storage place are used for supporting cut parts, the driving device is used for driving the corresponding feeding plate to move to a position above or far away from the storage plate, the visual system is used for recognizing the positions of the cut parts placed on the feeding plate and recognizing the positions of the cut parts placed on the storage plate, the rotating device is used for controlling the storage plate to rotate according to recognition results of the visual system, so that the angle of one cut part on the storage place is adjusted to be as same as that of another cut part on an adjacent layer above the cut part, and the manipulator is used for moving one cut part on the feeding plate to be aligned to another cut part on an adjacent layer under the cut part according to the recognition results of the visual system and rotating results of the rotating device. The rotating device is matched with the manipulator to adjust relative positions of the cut parts, program setting complexity in the manipulator can be simplified, operation time is reduced, and overlapping accuracy of the cut parts is improved.

A reference glass board (8B) whereupon a reference pattern (P) to be an exposure position reference is previously formed is arranged on a lower side of a glass board (8A), and is transferred in an arrow A direction by a transfer means (4). The reference pattern (P) is illuminated from the lower part of the transfer means (4) by the illuminating means (6), and an image of the reference pattern (P) is picked up by an image pickup means (5) arranged on an upper part of the transfer means (4). An optical system control means (7) detects a reference position previously set to the reference pattern (P) of which the image is picked up by the image pickup means (5), and controls irradiation start or irradiation stop of laser beams, having the reference position as a reference. Then, a pixel of a black matrix to be a reference of a functional pattern formed by being laminated on the glass board (8A) is exposed at a prescribed position on the glass board (8A). Thus, alignment accuracy of the functional pattern is improved and cost increase of an exposure apparatus is suppressed.

The invention discloses a pole piece cutter mechanism and a battery cell production device, and relates to the technical field of battery cell production. The pole piece cutter mechanism comprises a rack, a creasing assembly and a cutting assembly, the creasing assembly and the cutting assembly are arranged on the rack, and the rack is used for bearing a pole piece; the creasing assembly is used for creasing the pole piece once every time the pole piece moves by a preset piece width relative to the rack; and the cutting assembly is used for cutting off the pole piece when the pole piece movesby a preset number of preset piece widths relative to the rack. According to the pole piece cutter mechanism, the pole piece can be creased, so that the powder falling rate of the pole piece is reduced to a great extent, the lamination overlapping precision can be improved, and the quality of the battery cell is further improved.

The invention discloses a grid line printing method of a solar cell. Through changing a second-time printed graph, equipment prints a bottom-layer graph and a second-layer graph through regular calibration, and displacement of a rear piece is compensated through the line width difference and offset of grid lines in the printed graphs to increase the overlap ratio of the grid lines, so that the printing quality and efficiency are improved.

The invention provides a welding bottom plate device and battery string production equipment, and relates to the technical field of battery string production. The welding bottom plate device comprises a welding bottom plate body, a plurality of parallel welding wire tail clamping jaw receding grooves are formed in the upper surface of the welding bottom plate body, a plurality of battery piece negative pressure adsorption holes distributed in a rectangular array are formed in the surface of the welding bottom plate body in a penetrating mode, and high-temperature-resistant strong magnet pre-buried grooves are formed in the upper surface of the welding bottom plate body and located on the two sides of the welding wire tail clamping jaw receding groove. According to the bottom plate welding device and the battery string production equipment, a welding wire positioning groove is formed in a welding bottom plate, welding wires are accurately positioned, the position coincidence precision of main grid lines and the welding wires of a battery piece is higher, the width of the main grid lines on the front face and the back face of the battery piece can be smaller, silver paste is saved, the diameter of the welding wires can be reduced, the welding wires with the same weight can be machined to be longer, more battery strings can be welded, and the use cost of the battery piece and the welding wires is greatly reduced.

The invention relates to the field of printing, in particular to a printing accuracy detection system which comprises a printing device. The printing device comprises a case, a first printing roller and a second printing roller, wherein an inlet and an outlet are formed in the case; a first conveying wheel and a second conveying wheel are located on the inlet of the case; a first printing roller and a second printing roller are horizontally and rotatably arranged in the case and are in parallel; a first installation hole is formed in the side surface of the first printing roller; a first punching cutter is arranged in the first installation hole; a first tension spring is arranged between the first punching cutter and the first installation hole; a second installation hole is formed in theside surface of the first printing roller; a second punching cutter is arranged in the second installation hole; and a second tension spring is arranged between the second punching cutter and the second installation hole. According to the scheme, positions of printed multi-layer bills can be detected, and the processing accuracy of the bills is improved.

The invention relates to a coordinate system coincidence calibration method and system. The method comprises the steps that a first coordinate system is acquired based on the structure of a robot, and a second coordinate system is acquired based on a shot image of the robot; calibration points are acquired from the image, and any three of the calibration points can form an isosceles triangle; the robot is made to translate at equal intervals, and translation matrixes of the first coordinate system and the second coordinate system are calculated based on a first set of acquired calibration data and a second set of acquired calibration data; the robot is made to rotate, and rotation matrixes of the first coordinate system and the second coordinate system are calculated based on a third set of acquired calibration data and a fourth set of acquired calibration data; a feature point on a certain image is acquired, and an estimated coordinate value of the feature point on the second coordinate system is calculated; an actual coordinate value of the feature point is obtained through measurement; and the estimated coordinate value and the actual coordinate value are compared to reversely verify the accuracy of the translation matrixes and the rotation matrixes. Through the coordinate system coincidence calibration method and system, errors of an image vision system can be reduced, the coincidence degree of a camera coordinate system and a robot coordinate system is increased, and then part assembling precision is improved.