Contactless energy and data transfer
Context of the project: The SmartPPE project aims to develop a personal protective equipment for healthcare workers engaged in the fight against infectious diseases in developing countries. This outfit features a portable ventilation system powered by batteries that must be recharged between uses. The outfit must also be reusable and must thus be disinfected, including using chlorine solution. The ventilation system must therefore be perfectly watertight and chlorine resistant. On current systems, recharging the battery is performed via a connector located on the ventilation casing, protected during use and disinfection by a watertight cap.
Goal of the Master’s project: Design and build a wireless recharging system for the battery, in order to guarantee the impermeability of the casing and to simplify the recharging process. The battery is based on Lithium technologies, which requires control of the charging current depending on the charge status. The battery charger is located outside the ventilation system casing, so that the wireless system must not only transfer the necessary power to recharge the battery, but also the signals needed to monitor its charge status and to control the charging current.
Contactless temperature measurement
The fundamental function of infant incubators is to regulate the temperature around premature infants. To do so, a control system is used, which uses temperature sensors, either for the ambient air or for the baby’s skin. Such skin probes allow a more precise and relevant temperature regulation.
However, in the context of low income countries, such probes cause hygiene and procurement issues. We are thus developing a contactless temperature measurement system based on infrared sensors. The challenge is that the sensor should be located inside the incubator’s hood, i.e. roughly at the same temperature as its environment and as the object it has to sense.
The aim of the project is to study how it is theoretically possible to perform such a measurement, and then to design and build a measurement setup. This project is done in collaboration with Prof. Moser’s Laboratory of Applied Photonics Devices.
Design, modelling and prototyping of a thermal energy storage unit with phase-change material
Master project, Spring 2017
This project improved the first prototype of thermal battery for infant incubators. The student developed a mathematical model of the thermal battery that allowed him to simulate different configurations and calculate several design parameters. Thanks to these simulations, a new design of the thermal battery was proposed, realized and characterized.
This project was realized by Lucas Fuentes Valenzuela, in collaboration with the Laboratory for Processing of Advanced Composites and the Laboratory of Renewable Energy Science and Engineering.
Manufacturing of a novel concept of infant incubator developed for emerging countries
Master project, spring 2015
This project explored the design and manufacturing of an alternative heating system for infant incubators used in contexts where electrical power supply is intermittent. The solution is based on a phase-change material to store heat while electrical supply is available and release it during power cuts.
This project was realized by Benjamin Rime in collaboration with the Laboratory of Polymers and Composites Technologies and with the EssentialMed Foundation.