Wirelessly Powered Non-Volatile Memory

Content creation and content sharing have become part of our daily lives. With modern electronics, creating and sharing content has become very convenient, but this convenience has come at a price. Devices like smartphones that enable us to easily share content, are costly and complex. Devices like USB flash drives, on the other hand, are low...

Energy Saving in Bluetooth 4.0 Wireless Locks Connected via Mobile Phone to the Internet

In a modern environment users are more dependant on their ability to use their mobile phone for nearly everything. They communicate with almost any device and those devices provide nearly limitless access to for instance a watch or in new applications, a lock. Issues encountered with these devices are the almost always lack the ability to keep...

Analysis and Design of MHz-range Wireless Power Transfer Systems for Implantable Devices

Wearable and implantable devices are becoming more and more common as time goes by and one of the major bottlenecks in their development is the power delivery. In order to tackle this problem, energy harvesting arises an option to bring these devices one step closer to complete autonomy. Among the available mechanisms for harvesting, near-field...

The Wireless Kitchen: Introducing Inductive Power Transfer in the Kitchen Environment

Inductive power transfer is a technique to transfer power between two systems by using induction. Philips has started the development of a standard for this wireless power transfer technique for products with high power, such as kitchen appliances. The Wireless Kitchen graduation project was started to investigate this introduction of inductive...

Run-time Reconfiguration in Wireless Sensor Networks

A wireless sensor network (WSN) consists of multiple small and simple computers (nodes), whose performance is tightly linked to its unpredictable deployment environment. It is nearly impossible to design a WSN that performs well in every scenario; instead they are developed for a specific context, with performance rapidly decreasing when...

Indoor Localization for Wireless Sensor Networks; Applying multiple frequencies to mitigate multipath effects

Localization has an import role in wireless sensor networks, as it adds context to gathered data. The goal of this thesis is to create an application that determines the location of a mobile sensor node in an indoor environment. A secondary goal is to get practical experience with indoor localization. Previously, in a literature review, we...

Radio Wave Propagation in Metal Train Compartments

Wireless sensor networks are being deployed extensively to collect sensory data in various environments under different conditions. A wireless sensor network consists of multiple nodes, each with the ability to communicate using radio waves. The characteristics of the radio link between nodes are largely influenced by their environment. For...

Reliable sensor networks: A case study in commuter trains

Public transport offers affordable transport to many people every day. Due to material wear down, trains can break down and stop functioning. To prevent this from happening, modern technology can used be for condition monitoring to recognize material wear down and thus allowing trains to be mended in time. The Dutch Railways approached Logica to...