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Insufficient support of electric current sensing on commodity mobile devices leads to inaccurate estimation of their battery's state-of-health (SoH), which, in turn, shuts them off unexpectedly and accelerates their battery fading. In this paper, we design V-BASH, a new battery SoH estimation method based only on their voltages and is compatible to commodity mobile devices. V-BASH is inspired by the...
European market size for smart home systems is expected to grow by 20% to over 4.3 billion USD by 2017. This growth is mainly due to the development of luxury and premium markets towards a mass market. In 2014, more than one billion mobile devices with Google's operating system Android were sold, which resulted in a market share of more than 80%. Thus, mobile devices have already reached the mass...
In this article, the authors discuss new trends in powering pervasive computing systems and review what we have learned in the last 15 years of building such systems. Major advances in cloud computing, RF, power harvesting, and networking have enabled new asymmetric architectures that reduce our reliance on batteries. Although the authors see a slowing of Moore's law, and although battery density...
This paper presents the results of an indoor localization experiment that uses spread spectrum modulated audio signals. Indoor spaces do not have line-of-sight to global navigation satellite systems and do not have a truly universal localization system to allow mobile devices to localize themselves. Previous approaches focused in using custom made hardware with several types of signals that, even...
We present a wearable system that uses ambient electromagnetic interference (EMI) as a signature to identify electronic devices and support proxemic interaction. We designed a low cost tool, called EMI Spy, and a software environment for rapid deployment and evaluation of ambient EMI-based interactive infrastructure. EMI Spy captures electromagnetic interference and delivers the signal to a user;s...
As the number of smart device users has increased, PC-based smart work environments of businesses and public institutions have opted to adopt mobile offices to support their employees. However, with the trend of BYOD (Bring Your Own Device), security problems such as the leaking of confidential information of businesses and important contents have also developed. Thus, the paper proposes utilization...
Quality attributes are essential in software architecture and they are determined by identifying the concerns of the stakeholders of a system. The concerns of constructing mobile applications (apps) are quite specific due to the characteristics of mobile devices. These concerns have not been adequately addressed in industry standards and practices. In this paper, we present a mobile app development...
As machines in most industries continue to grow in complexity, user interfaces play an increasingly important role in allowing operators to naturally interact with such machines. In this paper, we present a versatile approach that can enable operators to interact with a variety of machines using smart mobile devices. A low-cost, embedded system-based setup and an easy-to-implement communication method...
Mobile Cyber-Physical Systems (CPSs) widely vary in the underlying hardware technologies and capabilities of their mobile devices (e.g., robots). This makes the problem of developing portable high-level Mobile CPS applications difficult, since applications are typically written for specific devices. To this end, this paper present a framework that relies on abstracting the representation of the mobile...
iOS is Apple's mobile operating system and is presently used on the iPhone, iPad, and iPod Touch. The hardware platforms associated with the iOS operating system provide a powerful platform for sensor applications. In this paper, we provide a case study on the development of a digital multimeter (DMM) using an iPod Touch. The DMM case study addresses the major subsystems (hardware, software, and firmware)...
Commodity hardware enables a range of cost-effective ubiquitous computing research, but innovative custom hardware can drive compelling new user experiences. One of the dreams of ubiquitous computing is an ecology of heterogeneous computer systems, built into the environment around us and acting in concert to make our lives easier and more fun. Fundamental to this vision is a movement away from the...
We introduce an architecture for low-cost mobile health (mHealth) applications that run on health-workers' existing devices. Moreover, we envision extending the phone's capabilities with an external to attach ??sensor?? modules, such as pulse oximeter, ECG and phonocardiogram. Our design principles are frugality and simplicity. We propose a comprehensive solution to aid health-workers in their daily...
We present a novel context acquisition and management middleware for mobile phones based on Qt (C++ based cross-plattform API) for S60 called mSense. In our middleware, sensor nodes encapsulate platform level APIs for seamlessly accessing hardware sensors, simulated sensors or web services. Aggregators (channels) combine information from other nodes to generate new knowledge. For example, GPS, accelerometer...
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