The invention relates to a method for checking the quality of a product (1) comprising at least two cardboard portions (2) connected to each other such that a slot (10) extends between the cardboard portions from one side of the product (1) to the opposite side, with the slot (10) being expected to extend perpendicularly with respect to an outer edge of the product (1), comprising the steps of: capturing a 2D image of the slot (10) at one side of the product (1) and of the slot at the opposite side of the product, analyzing the images so as to recognize the slot (10), comparing the positions of the slot of one product at the opposite sides, making a determination whether or not a difference between the positions is within a predefined range of tolerance.

The invention further relates to a machine for checking the quality of a product (1) made from at least two cardboard portions (2) connected to each other such that a slot (10) extends from one side of the product to the opposite side, with the slot being expected to extend perpendicularly with respect to an outer edge of the product, the machine comprising two cameras (304) adapted for capturing a 2D image in a stacking area for stacking the products, an image processing module (306) adapted for recognizing in the captured images the position of the slot on the two sides of the product, and an offset determination module (310) adapted for determining the amount of offset between the position of the slots at the opposite sides of the product.

A system for determining one or more characteristics of a carbon fiber tow. The system including a first laser profilometer, a second laser profilometer, and a controller. The first laser profilometer is located on a first side of the carbon fiber tow. The second laser profilometer is located on a second side of the carbon fiber tow. The controller is configured to receive, from the first profilometer, a first profile of the first side of the carbon fiber tow, and receive, from the second profilometer, a second profile of the second side of the carbon fiber tow. The controller is further configured to determine at least one characteristic selected from a group consisting of a tow width of the carbon fiber tow, a tow fuzz of the carbon fiber tow, a tow thickness of the carbon fiber tow, and a tow angle of the carbon fiber tow, the at least one characteristic based on the first profile and the second profile. The controller further configured to output the at least one characteristic of the carbon fiber tow.

The invention relates to a method for illuminating a wood fibre web for deviation detection. The method comprises turning on LEDs of an overhead sidelight that are side-directed towards a first edge of the web for illuminating a first half of width of the web, capturing an image of the first half, turning off the LEDs, turning on LEDs of the overhead sidelight that are side-directed towards a second edge of the web for illuminating a second half of width of the web, capturing an image of the second half, and turning off the LEDs. The invention also relates to an overhead sidelight, a machine vision system, and a lighting system.

The present invention has disclosed a multifunctional automatic quality inspection machine and a control method thereof. The machine comprises a frame, an unrolling device provided at the frame, an inspection mechanism, a button operating platform, a slitting mechanism, a main controller, a display device, and a rolling device; a paper movement route is provided between the unrolling device and the rolling device; the inspection mechanism and the display device are respectively electrically connected to the main controller; the rolling device includes a first rolling airshaft, a second rolling airshaft, and a rolling drive device; the first rolling airshaft and the second rolling airshaft are provided on the rolling drive device; the first rolling airshaft and the second rolling airshaft swap their positions via the rolling drive device. The machine has a number of functions including automatic unrolling, high inspection precision, discharging waste materials, splitting and quick rolling.

The invention relates to an inspection station for crimped sheet material. The station comprises a light source to illuminate crimped sheet material in an inspection location, a vibrating device to vibrate crimped sheet material in the inspection location. The vibrating device comprises a vibrating element, wherein crimped sheet material is guidable along or over the vibrating element for the crimped sheet material to be vibrated by the vibrating element. The inspection station further comprises a detector for detecting light received from the vibrated crimped sheet material, thereby providing images of the crimped sheet material, and a controller to determine loose material on the crimped surface of the sheet material. The invention also relates to an inspection method and an apparatus comprising an inspection station.

Provided is a method for manufacturing a glass fiber strand in which a glass fiber strand is formed by bundling a plurality of glass fiber filaments comprising molten glass drawn out from a nozzle, wherein said method for manufacturing a glass fiber strand is capable of detecting breakage of the glass fiber filaments in a more reliable manner. This method comprises: an image capturing step (STEP-1) for generating a plurality of items of image data by continuously capturing images of a plurality of glass fiber filaments f; an image processing step (STEP-2) for extracting, from the image data, a high luminance object 100 having a luminance of a prescribed value or more; and a breakage detection step (STEP-3) for detecting that a glass fiber filament f has broken on the basis of the results of the image processing in the image processing step. In the breakage detection step, the presence of a change in the position of a high luminance object 100 is detected on the basis of the plurality of items of the image data, and it is determined that the glass fiber filament f has broken when a change in the position of a high luminance object 100 is detected.

A health monitoring system of for a tension member of an elevator system includes one or more light emitters configured to direct a light signal toward an elevator system tension member and one or more light receivers configured to receive a reflected light signal from a fluorescent surface of the elevator system belt. A discontinuity in the reflected light signal received at the one or more light receivers is indicative of an anomaly in the elevator tension member. A method of health monitoring of a tension member of an elevator system includes transmitting a light signal toward a fluorescent surface of an elevator tension member from a light emitter and reflecting the light signal from the fluorescent surface toward a light receiver. A discontinuity in the reflected light signal received at the light receiver is indicative of an anomaly in the elevator tension member.

A cardboard sheet defect detection device is for detecting a defect of a single-faced cardboard sheet guided by a guide member outside a corrugated core. The cardboard sheet defect detection device includes an irradiation device that irradiates the core with light at an irradiation angle inclined as much as a preset predetermined angle with respect to the single-faced cardboard sheet; an imaging device that images an irradiated portion of the light in the core; an image processing device that defines a bright section or a dark section along a transport direction of the single-faced cardboard sheet, based on a captured image captured by the imaging device; and a determination device that determines a quality by comparing a length of the bright section or a length of the dark section which is defined by the image processing device with a preset determination value.

A quality control station (2) for a sheet element processing machine, having at least one camera (6) arranged for capturing images of sheet elements (4) transported through the quality control station (2), and further having an illumination unit (5) with at least one light emitter (16) and two reflectors (12, 14), the illumination unit (5) directing light onto a viewing area of the camera (6) such that the illumination intensity is constant despite changing media thickness. An illumination unit for such quality control station is disclosed.

The objective of the present invention is to enable accurate detection of a mismatch during electric resistance welding. This operation monitoring device for high-frequency resistance welding and induction heated welding of an electric resistance welded steel pipe, in which a strip-shaped metal sheet is continuously formed into a cylindrical shape by means of a group of rollers while being conveyed from an upstream side to a downstream side, and in which the two edge portions, in the circumferential direction, of the metal sheet, which are caused to converge into a V-shape, are caused to melt by the application of heat and are caused to abut one another, is characterized by being provided with a means for detecting a mismatch by recognizing a non-uniformity between light-emitting regions of a metal part, on both sides, in the circumferential direction, of the abutting position on an outer surface or an inner surface of the metal plate, on the basis of an image of a region including a V-convergence location, which is a location at which the two edge portions in the circumferential direction converge into said V-shape, and said metal part which is caused to flow out onto the surface of the metal plate by means of an electromagnetic force downstream of the V-convergence location, wherein said image is captured by means of an image capturing device from an outer surface side or an inner surface side of the metal plate that has been formed into said cylindrical shape.