In this demonstration, we show an indoor location tracking system that broadcasts ranging data to mobile phones using ultrasonic signals. The system capitalizes on the ability for many smart-phones to detect audio above the human hearing range. This ...

Incorrect muscle usage and muscle fatigue are a leading cause of many sports injures. As a result, sensing and monitoring muscles, as well as human motion, is important. Toward this end, we present the Muscle Activity Recognition System (MARS) system. ...

Energy saving is the main goal in most building energy monitoring applications. These systems, however, are operated by people. For this reason, an intuitive user interface is an essential element that will affect users' data understandability, thereby ...

Though there exist ready-made DSRC/WiFi/3G/4G cellular systems for roadway communications, there are common defects in these systems for roadway safety oriented applications and the corresponding challenges remain unsolved for years, i.e., WiFi cannot ...

Developing, testing, debugging, and evaluating communication protocols for low-power wireless networks is a long and cumbersome task. Simulators can be helpful in the early stages of development, but their models of hardware components and the wireless ...

It is a tedious task to search and locate a specific book from massive number of books arbitrarily placed in a bookshelf. In this paper, we demonstrate iBookshelf, a system which allows users to quickly search and accurately locate books in the bookshelf,...

In this work we point out the issue of the IETF RPL routing protocol's two different downwards routing schemes not being able to interoperate with each other. This problem is less of an issue when low-power and lossy networks (LLNs) are deployed ...

Reliable flooding in wireless sensor networks (WSNs) is desirable for a broad range of applications and network operations. However, it is a challenging problem to ensure 100% flooding coverage efficiently considering the combined effects of low-duty-...

Robot platforms have been proposed to address challenges of wireless sensor network deployments in dynamic environments. Enabling a fraction of nodes to be mobile can lead to improvements in sensing coverage, network lifetime, and network connectivity. ...

Wireless control systems consist of sensing and actuating devices that are commonly driven by a central controller. Wireless communication protocols for Cyber-Physical Systems (CPS) match this design by employing a "sense → collect → process → ...

Cross-correlation is a popular signal processing technique used for obtaining reliable range information. Recently, a practical and efficient implementation of cross-correlation (via sparse approximation) was demonstrated on resource constrained wireless ...

Today, Radio Frequency ID (RFID) technology is adopted in many applications such as asset tracking, supply chain management, manufacturing, retailing, payment systems, security and access control [1]. In this poster, we consider a novel application that ...

The use of implantable medical devices (IMDs) are on the rise. Heart pacemakers, brain neurostimulators, cochlear implants, gastric stimulators, cardiac defibrillators, foot drop implants, and insulin pumps have been widely used, and more are on the ...

As the number of sensors increase in wireless sensing applications, it is important for nodes to provide meaningful summary reports of the original data to the gateway. In doing so, given the resource constraints of the sensing devices, we need a light ...

Smartphones with Wi-Fi enabled periodically transmit Wi-Fi messages, even when not associated to a network. In one 12-hour trial on a busy road (average daily traffic count 37,000 according to the state DOT), 7,000 unique devices were detected by a ...

Unprecedented rate of growth in the number of vehicles has resulted in acute road congestion problems worldwide. Better traffic flow management, based on enhanced traffic monitoring, is being tried by city authorities. In many developing countries, the ...

Biking is one of the most efficient and environmentally friendly ways to control weight and commute. To precisely estimate caloric expenditure, bikers have to install a bike computer or use a smartphone connected to additional sensors such as heart rate ...