The aim of this project is to implement an automation system installed in a baby crib to provide the parents with a system to monitor and care the state of the baby, helping to create a comfortable ambient to the baby. This system will be equipped with several sensors that will provide information on the external conditions, such as the temperature and relative humidity sensor, absolute humidity sensor and air quality sensor.The control of this system will be carried out by means of a Raspberry Pi 3 B, which will process the data emitted by the different sensors generating, as a response, the activation of different actuators, such as the electric blanket and the humidifier, or generating an informative notice to parents about the need to change the baby's diaper. It also has other actuators installed in the crib such as the rocker movement or a ceiling projector, which can be activated at the user's request through the touch screen located in the crib, which acts as a graphic interface or through the mobile application, with which Remote control system.First of all, for the elaboration of this system, each of the sensors used has been analyzed, to understand its operating principles. A Raspberry PI has been used to control the entire system, where the application programmed in Java language and developed in the IntelliJ IDE is executed.
Fibre Bragg gratings in multicore optical fibres are attractive sensing elements for multiplexed measurements (e.g. shape sensing). In order to achieve optimized uniformity in the grating inscription, a setup with control of orientation was applied.
Applications associated with complex, structured optical fibers having no circular symmetry often require information about their specific angular orientation. Such cases include, for example, splicing, sophisticated mode coupling, selective fiber Bragg gratings inscription, or direction‐sensitive sensing. Besides the external angular orientation of the fiber, additionally an intrinsic twist of the internal fiber structure has been identified as a critical parameter for applications. Such an intrinsic fiber twist might occur as a side effect of the fiber drawing process, or it may have been introduced intentionally as a special fiber property. In all such cases, a measurement of the local orientation along the fiber is highly desirable. A method for such measurements based on the analysis of the refractive–diffractive scattering patterns is presented. By comparing such measured patterns with reference patterns from modeling or from reference measurements, the orientation of the fiber can be identified with high accuracy and without measuring or reconstructing the detailed cross section of a fiber. The method, therefore, provides an approach for quick identification of a local angular fiber orientation status.
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