This article presents both the three-dimensional modelling of the isochronous pendulum clock and the simulation of its movement, as designed by the Dutch physicist, mathematician, and astronomer Christiaan Huygens, and published in 1673. This invention was chosen for this research not only due to the major technological advance that it represented as the first reliable meter of time, but also for its historical interest, since this timepiece embodied the theory of pendular movement enunciated by Huygens, which remains in force today. This 3D modelling is based on the information provided in the only plan of assembly found as an illustration in the book Horologium Oscillatorium, whereby each of its pieces has been sized and modelled, its final assembly has been carried out, and its operation has been correctly verified by means of CATIA V5 software. Likewise, the kinematic simulation of the pendulum has been carried out, following the approximation of the string by a simple chain of seven links as a composite pendulum. The results have demonstrated the exactitude of the clock.
Despite the intense research in the last decade with the aim of developing a reliable solution for fall detection in the elderly and other risk populations, it can be asserted that the diffusion of fall detectors in the geriatric practice is near null. This scenario is similar to the very scarce use of telemedicine in healthcare. The present work begins analyzing why fall detectors have not achieved to permeate the industry. That road is used to know the drawbacks of current devices and systems, besides to allow studying several important concepts underlying the principles of fall detection. A novel smart detection system based on that survey is finally briefly presented. The design of this device is founded on the experience and results obtained by an earlier device that was designed in the framework of the thesis of one of the authors.
The aim of this work is to develop and implement a model for facility layout design. The first step will be to study the traditional process of positioning, locating or distributing the different facilities, which will be done with the help of slicing trees. Afterwards, the connections between the facilities will be handled, looking for the shortest path that communicates them all, by the means of an expert system. Finally, the orientation of the original surface will be treated, using rules from Feng Shui. These three aspects and their different techniques will be integrated into a single application, joining as well the knowledge and experience from architects and engineers. The space distribution algorithm of the application itself provides excellent results. Apart from that, the application considers the routing problem, especially important in Architecture (not so important in industrial plan design, when there are no walls between facilities). The application also considers the orientation of the surface, which contributes to improve the comfortability of the building and power saving. The main advantage of the application is that, while being a good tool for solving the facility layout problem, it also considers the routing and orientation of the building.
PurposeThe main goal of this paper is to show how the automation of tasks in solid modelling with Catia V5 is approached, by means of macros, working under the Windows operating system and with the Visual BASIC programming language. A macro is a piece of code (written in a certain programming language) which groups a set of operations that define a certain task.Design/methodology/approachThe paper is divided into three parts. In the first one, the necessary concepts to begin working with macros are discussed: the programming languages (object‐oriented), compatible with Catia V5, are introduced. The handling of macros, like the one of the fundamental objects of the application, is explained as well. In the second part, the different objects on which the macros for solid modelling are based are described, explaining how they are used and how they are related to one another. In the third and last part, several applications which clarify the use of the studied tools, and which show the great utility of the macros, are included.FindingsUsing macros can automate design tasks which are performed repetitively, as well as carry out new operations (features) which facilitate the modelling process and which are not included in the order menu by default.Originality/valuePower and versatility of macros as a task‐automation tool is shown, as well as how simple, fast and efficient it is to program them in Visual BASIC.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.