The development and implementation process of a computer interface for the kinematic analysis of a parallel robot, in delta configuration, and its application to a previously formed prototype are exposed. Being identified the associated equations, and deduced the respective geometric parameters. On the other hand, the synthesis of the direct and inverse kinematic models, with the Matlab software, guarantees the calculation of a specific Cartesian position, in the end effector of the robot used, once certain joint values have been assigned to it, or vice versa. Finally, a user-friendly graphical interface is created, whose functions are: data entry, resolution of the models described, issuance of the corresponding results, representation of the robot used and its physical manipulation. The results obtained in the real location of the end effector with respect to the values deduced by the interface, are competitive for both models analyzed, even though the prototype used operates by means of servomotors. An average position error of 0.083 cm per axis and overall of 0.006 cm is observed during the tests developed.

The evolution over time of structural changes in materials is of great importance in various areas of science, its study involves determining the phase with the change in the intensity of the physical properties to be measured. In this work, the use of Phase Displacement Interferometry PSI is presented using a combination algorithm of five interferograms or five steps, the results are compared with the addition of the states studied in the dynamic event, exposed in the Digital Holographic Interferometry DHI. The deformation was simulated from a rotating system in the coordinates (x, y). The results suggest that the phase map of the changing events with time that are calculated with PSI of five steps may have a relationship with the average of each change point of the dynamic event, with a difference of 0.96 radians.

Considering the current health situation and the need for population health safety, this work presents the development of a prototype of an intelligent face mask for facial protection that contributes to the fight against the spread of the COVID-19 pandemic in the education and health sector; so it is visualized as an important opportunity for the development of technological tools that allow to contribute to solve a problem and generate a social impact. Due to the problems detected, the following actions are carried out for the implementation of a prototype capable of constantly monitoring body temperature and recommended social distance using an alert system, which is developed in three different stages where design and printing, electronics, programming and assembly are considered. During the research process it is determined that such devices will be required and present a promising future in this area of application, although it is known that there are alternatives but that require a greater process before their implementation.

Non-contact techniques have returned to optical metrology one of the most booming branches of science, making digital speckle photography (DSP) one of the most used in the measurement of structural changes in surfaces. This technique uses a laser as a measurement system and compares the changes in the speckle pattern obtained by irradiating the surface that is subjected to deformations; however, the alignment of these systems plays an important role in the results obtained. In this work, the alignment errors of an optical system are estimated based on the analysis of the Fraunhofer diffraction pattern, as well as the statistical properties of the speckle pattern for field near and far. The results indicate that the alignment of the light beam can be determine by a fringes quantification system when passing through a pinhole and that the highly developed speckle pattern is more similar to the intensity distribution shown in the literature.

Non-contact techniques for the analysis of deformations on surfaces has had great boom and acceptance in various sectors of science. When a beam of light with characteristics of temporal and spatial coherence radiates about optically rough surface, it presents a random distribution of intensity, giving rise to the phenomenon called speckle; said phenomenon is a representation of bright and dark dots formed by the random distribution of said coherent light, this distribution of overlapping speckle patterns generate interference fringes, its fringes are presented when in second pattern fringes has phase difference between them, which, give information about the state of deformation suffered by the material that is analyzed. This work reports the procedure that is followed for the analysis of deformations in materials using interferometric techniques. Different configurations of interference fringes are presented, and the procedure for their demodulation is described.