Abstract:
An inspection system and method for use in conjunction with a movably mounted platform to perform inspections of a generally upright standing structures or underground/subsurface structure. In order to perform these inspections, a technician or user can mount an interface member and the detector on the platform and/or interface member. The platform can be moved along the length of the structure while the inspector/detector module captures data regarding the structure. This data can be transmitted to a destination where it can be recorded and/or analyzed by the technician or given user. A given destination(s) may be local such as at the structure or proximal to the structure, or may be remote from the structure such as short to long distance communication. A controller/processor (e.g., computer program product) is configured having a number of crack or flaw detection algorithms for assessing the status of such cracks or flaws on the structure.
Abstract:
Une pluralité de sources lumineuses (4) sont disposées en anneau dans un plan et émettent individuellement et successivement, de façon tournante sur l'anneau, un faisceau incident dirigé vers l'axe (5) de l'anneau et incliné par rapport à cet axe d'un angle non droit. Ce faisceau est réfléchi sur l'objet (2) placé sensiblement selon l'axe (5), puis reçu par l'un des photo détecteurs (8a, 8b, 8c) situés dans un plan parallèle à l'anneau des sources. Par la modulation de l'énergie reçue par les photo détecteurs, on détermine la présence d'un défaut de forme, d'une irrégularité de surface, ou d'une variation de couleur. La mesure présente une très bonne résolution du fait de l'éclairage successifs de très petites zones de la surface de l'objet.
Abstract:
A device for the optical analysis, including two-dimensional, of a thread or yarn (F) fed to a textile machine, said device comprising at least one light emitter element (3, 4) and at least one receiver element (5), said emitter element (3, 4) generating a light signal which strikes said thread (F) before being sensed by the receiver element (5) which, based on this sensing, defines a characteristic of the thread (F) such as its movement or its stoppage, a dimensional defect or another dimensional characteristic, between said light emitter element (3, 4) and said receiver element (5), there being interposed light transparent means (6) which are encountered by the light signal after it has interacted with the thread (F), and which act as a thread guide.
Abstract:
Ce procédé de contrôle non-destructif d'un élément (3) pour réacteur nucléaire, procédé comprend les étapes de : a) acquisition d'une image radiographique et numérique d'au moins une zone de l'élément (3), b) création d'une image de référence par traitement numérique de l'image acquise, et c) comparaison de l'image acquise, éventuellement traitée, à l'image de référence pour détecter la présence de défaut(s). Application au contrôle de crayons de combustible nucléaire.
Abstract:
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Prüfen der Oberfläche eines vorzugsweise bewegten Materialstrangs (19) der tabakverarbeitenden Industrie, insbesondere eines Zigarettenstrangs. Dabei wird ein vorzugsweise streifenförmiger Abschnitt (27) des Materialstrangs (19) mit Licht beleuchtet und zumindest teilweise mit einem Lichtdetektor erfasst, wobei das Licht aus einer anderen Richtung als der Hauptdetektionsrichtung des Lichtdetektors (28) eingestrahlt wird. Aus der von der Strangoberfläche beeinflussten geometrischen Form des Beleuchtungsbildes (27) werden die Geometrie des Stranges (19) wie Strangdurchmesser und Strangposition beschreibende Parameter bestimmt und/oder Oberflächenfehler erkannt. Anschließend werden aus den Parametern der Stranggeometrie Parameter bestimmt, die eine Verzerrung des vom Detektor (28) erfassten Bildes beschreiben, wobei mit Hilfe dieser Verzerrungsparameter im Rahmen geeigneter Bildbearbeitungsmethoden die Verzerrung des Bildes kompensiert wird. An dem kompensierten, nahezu unverzerrten Bild wird mit Hilfe geeigneter Bilderkennungsverfahren eine Mustererkennung durchgeführt, insbesondere zur Bestimmung der Lage, der Intensität oder der Form von Aufdrucken wie Stempeln.
Abstract:
A visual inspection system for a rod−like article comprising a rotatable main drum (20) inserted, as one carrying drum, into a train of drums defining the carrying passage of a filter cigarette in a production machine, upstream−side and downstream−side trains of detouring drums (24, 40) disposed on the outside of the main drum (20) and carrying a filter cigarette (FC) received from the main drum (20) while detouring, and an inspection camera (42) disposed between the trains of drums (24, 40) when viewed in the circumferential direction of the main drum (20), wherein the inspection camera (42) photographs different exposed circumferential faces of the filter cigarette (FC) directly or indirectly when it is carried on the main drum (20) and each train of drums (24, 40), respectively.
Abstract:
An automatic system for illuminating, inspecting and measuring stents (12) and other precision cut tubes and components made of: a linear array electronic camera (24) with a lens (22), a light source (20) to provide necessary ilumination to create an image on said linear array camera (24), mandrel (14) onto which the tube (12) is mounted during inspection, a rotary stage (18) for rotating the mandrel (14), and a computer (64) based electronic imaging system that creates a line-by-line image of stent (12) as it rotates under said camera (24).
Abstract:
The invention relates to a method and an arrangement for measuring the geometry of grooves in an elongated element, which grooves (2) extend as continuous grooves over the whole length of the elongated element (1), circling around the element, in which method the surface of the elongated element is scanned by means of a camera (6). In order to achieve simple non-contact measurement, the elongated element (1) is arranged to travel at the vertex through an annular biconical mirror or through a biconical bevelled mirror (3) comprising several plane mirrors, and through a plane mirror structure (4) arranged at an oblique angle relative to the direction of travel of the elongated element (1). An annular laser beam is directed to the plane mirror structure in such a way that the plane mirror structure (4) reflects the beam onto the surface of the elongated element (1) through the outer surface (3a) of the biconical mirror or bevelled cone mirror. The image of the surface profile of the elongated element (1) produced from the surface of the elongated element (1) by means of the inner surface (3b) of the biconical mirror or bevelled cone mirror (3) is turned to one side by means of the plane mirror structure (4) to allow the study of the groove geometry.
Abstract:
The invention relates to a method and a device for optically inspecting a surface (6) of a yarn bobbin (5). According to the invention, a light signal (7) is transmitted onto the surface (6) of the yarn bobbin (5) and is reflected on said surface as a reflection signal (10). The reflection signal is registered by a sensor (2) and evaluated as a relative height of the surface. In order to register the finest filaments (18) on the surface (6), the inventive reflection signal is divided into a primary reflection (10) which is directly reflected by one plane of the surface and a secondary reflection (9) which is reflected by an adjacent plane of said surface. The primary reflection (10) is evaluated to determine the relative height of the surface. The secondary reflection (9) is evaluated to determine a light intensity and constitutes a measurement value for the filament breakage.
Abstract:
Apparatus (20) for detecting faults in the exterior surface of elongate material especially enamel coated wire (W). The apparatus (20) comprises an optical head (22) through which the material (W) passes, the optical head (22) including means (35) to emit light onto the material; means (45) to collect reflected light from the material and means to monitor changes in the reflected light to indicate the presence of faults. A computer (60) is used to record the faults, their characteristics and position on a length of the material.