Sistema endoscópico de orientación espacial

Sistema endoscópico que comprende una lente tubular rígida con un canal para el paso de luz a través de fibra óptica, configurada para introducirse en una cavidad a través de un orificio o incisión cutánea y cuya función es captar y transmitir la imagen de la cavidad iluminada; una cámara conectada a un extremo de la lente tubular configurada para digitalizar la imagen obtenida a través de dicha lente tubular; una fuente de luz conectada también a la lente tubular por el extremo que se conecta a la cámara; un receptor de video conectado a la cámara a través del cual se recoge la señal proveniente de la misma; y una pantalla que permite visualizar la imagen saliente del receptor de video, estando el sistema caracterizado por que comprende además: - un sensor inercial que comprende al menos un acelerómetro de 3 ejes y un giroscopio de 2 ejes, estando el sensor inercial configurado para, a partir de los datos de aceleración angular obtenidos por el acelerómetro y de velocidad angular obtenidos por el giroscopio, proporcionar la orientación del sensor inercial a través de los ángulos de alabeo (rotación en el eje X) y cabeceo (rotación en el eje Y) que se corresponden con los ángulos de giro del endoscopio (cámara 10 + lente tubular 11) debido a los giros de muñeca del cirujano que está manejando el endoscopio, tal que dicho sensor inercial debe estar situado en la cámara (en su interior o en su superficie, a su entrada o salida) o en sus proximidades (a su entrada o salida), de forma que no interfiera al cirujano durante su utilización, y tal que el eje X del sensor inercial debe situarse de manera paralela al eje longitudinal de la lente tubular, el eje Y del sensor inercial de manera paralela al eje transversal de la lente tubular y el eje Z del sensor inercial de manera paralela a la vertical del endoscopio(cámara 10 +lente tubular 11); - un sistema informático que comprende un puerto de recepción de datos del sensor inercial conectado a dicho sensor inercial; una capturadora de video configurada para captarla señal de video de salida del receptor de video que recoge la señal proveniente de la cámara; una salida de video del mismo formato que el video de entrada recogido en la capturadora de video conectada a la pantalla y un puerto de conexión conectado a un dispositivo de interacción humana y que recoge los datos de dicho dispositivo; - un dispositivo de interacción humana configurado para interactuar con el software del sistema informático y comandar las funcionalidades pertinentes de dicho sistema informático.Solicitud: U201931231 (18.07.2019)Nº Pub. de Solicitud: ES1235420U (30.09.2019)Nº de Modelo de Utilidad: ES123542Y (23.12.2019

Máscara de protección para la manipulación nasal

Solicitud: 202030765 (30.04.2020)Nº Pub. de Solicitud: ES1247959U (17.06.2020

An inertial sensor-based system designed to measure and prevent undesired camera rotation during endoscopic sinus surgery

This project was developed thanks to the Innovation Support Program “InnVal” of the Marqués de Valdecilla Research Institute (IDIVAL)

Laser metal deposition on-line monitoring via plasma emission spectroscopy and spectral correlation techniques

Plasma spectroscopic techniques focused on the analysis of the plasma background radiation have been studied to enable an efficient on-line monitoring of a laser metal deposition process. The influence of different process parameters and elements, such as laser power, process speed, powder feeding rate and different powder and substrate compositions has been analyzed by means of several experimental trials. The resulting cladding patch analyzes via visual inspection and macrographs have been correlated with their associated spectroscopic monitoring signals. These studies have indicated that on-line quality monitoring of the laser metal deposition process is feasible by means of the proposed solutions, avoiding the identification and use of plasma emission lines. The latter improves the computational performance and avoids, not only the identification of each emission line, but also their specific sensitivity to certain defects. Spectral correlation techniques have also been proposed for monitoring purposes, thus enabling a more quantitative analysisThis work was supported in part by the Project “Noves tecnologies de laser cladding per a processos de conformat” (RD15-1-0098) funded by ACCIO (Generalitat de Catalunya) via FEDER funds. This work was also supported by projects PID2019-107270RB-C21/ AEI / 10.13039/501100011033

Colorimetric analysis for on-line arc-welding diagnostics by means of plasma optical spectroscopy

In this paper an analysis on the suitability of employing a colorimetric analysis of the acquired plasma spectra to perform on-line arc-welding quality monitoring will be discussed. Different colorimetric parameters like the color temperature or the parameters associated with the hue, saturation, luminance color space will be evaluated in comparison with the standard approach based on the estimation of the plasma electronic temperature. This approach does not require the identification of the emission lines involved in the analysis, thus giving rise to a more efficient solution in terms of computational efficiency, and avoiding unambiguous identifications that may give rise to incorrect results. In particular, experimental tests performed with a tungsten inert gas arc-welding process will show the feasibility of using the proposed solution and its ability to perform an online detection of different welding perturbations.This work has been supported by the project TEC2013-47264-C2-1-R

Estimation of the plasma spectrum RMS signal as an alternative spectroscopic approach for arc-welding quality monitoring

Plasma spectroscopy has demonstrated its potential within the framework of welding process quality monitoring. The analysis of the welding plasma spectrum, which is formed by several emission lines from the different elements participating in the process, gives rise to spectroscopic parameters exhibiting a direct correlation to the quality of the resulting seams. The plasma electronic temperature has been the traditional selection in this regard, mainly by using an approximation where only two emission lines from the same species are involved in the calculations. However, for a completely automated system, the computational cost involved in the process could be a serious drawback. In this paper we propose the use of the plasma spectrum RMS (Root Mean Square) signal as an alternative spectroscopic approach, as it will be demonstrated that this parameter can be also used to identify the appearance of weld defects in an on-line quality monitoring system

Real-time detection of the aluminium contribution during laser welding of Usibor1500 tailor-welded blanks

The identification and intensity estimation of some aluminium emission lines have been proposed to perform an on-line quantification of the Al contribution to the laser-welding process of Usibor blanks. This boron steel is protected by an Al-Si coating that is removed by laser ablation before welding. If this process fails to remove Al from the joint surface, its contribution may affect the final properties of the resulting seams, therefore compromising their quality. Experimental tests have been performed, some of them in a real production scenario. They have been analysed and compared to the results of welding test specimens, analysis of the associated tensile properties and fracture locations and seam macrographs. These studies have indicated that on-line quantification of the Al contribution to the process is feasible and that a correlation can be established between the Al content estimated in real-time and the results derived from the off-line tests considered.The authors would like to thank the staff of Autotech Engineering and Solblank (both Gestamp companies) for their valuable help during the design, implementation and test of the monitoring system. This work has been supported by the project TEC2013- 47264-C2-1-

Spectroscopic Polymer Optical Fiber sensor for orbital arc-welding on-line monitoring

Plasma optical spectroscopy has proved to be a promising solution for the on-line monitoring of both laser and arc-welding processes, where quality assurance plays a mayor role, especially in some particular industrial scenarios like aeronautics. Despite the robustness provided by these spectroscopic analysis techniques, the implementation of an efficient and non-invasive optical sensor system is not always feasible. Input optics based on optical collimators are commonly employed, but when complex shapes are to be welded, or specific welding processes are being considered, a different approach must be designed. In this paper we propose an optical sensor based on the use of a Polymer Optical Fiber (POF) as the input optics. The external protection of the POF is removed, providing an acquisition of the plasma radiation from the fiber cladding. Experimental welding tests will show the feasibility of the proposed POF sensor

Sistema de captación de luz para el monitorizado espectroscópico de soldaduras orbitales

Sistema de captación de luz para el monitorizado espectroscópico de soldaduras orbitales. La invención facilita la captura de la luz generada por el proceso de soldadura orbital permitiendo su monitorización mediante sistemas sensores basados en el análisis de la radiación luminosa generada por el plasma. Consiste en un tramo de fibra óptica desnuda enrollada sobre la cara interna de la cazoleta de protección que incorpora la pistola de soldadura. La fibra deberá tener las características opto-geométricas necesarias para que la luz incidente en su cubierta sea capturada y propagada por el núcleo, dirigiéndola al instrumento remoto de análisis. Uno de los extremos de la fibra óptica puede permanece en el interior de la cazoleta, estando terminado de forma que contribuya la captura de la luz. La aplicación fundamental de la invención se centra en el monitorizado de procesos de soldadura mediante métodos ópticosSolicitud: 200701088 (03.04.2007)Nº Pub. de Solicitud: ES2324260A1 (03.08.2009)Nº de Patente: ES2324260B2 (28.01.2010

Spectroscopic optical sensors for welding diagnostics

A review of solutions involving plasma optical spectroscopy applied to on-line welding quality monitoring is presented in this paper. After a brief introduction to welding processes and their requirements in terms of quality monitoring, different proposals for on-line monitoring will be addressed. The basics of welding monitoring via plasma spectroscopy in terms of light capture and hardware and processing requirements will be also introduced, and different approaches will be presented. Finally, a variety of examples regarding field trials in different sectors will be also discussed