In this paper, we propose a hybrid polling Medium Access Control (MAC) protocol with Human Energy Harvesting capabilities, called HEH-BMAC, designed for Wireless Body Area Networks (WBANs). The proposed protocol uses a dynamic schedule algorithm to combine User Identification polling (ID) and Probabilistic Contention (PC) random access, adapting the network operation to the random, time-varying...

This paper introduces Human Energy Harvesting Medium Access Control (MAC) protocol (HEHBMAC), a hybrid polling MAC suitable for Wireless Body Area Networks (WBANs) powered by human energy harvesting. The proposed protocol combines two different medium access methods, namely polling (IDpolling) and probabilistic contention (PC) access, to adapt its operation to the different energy and state (ac...

Title of thesis: RESONANT CIRCUIT TOPOLOGY FOR RADIO FREQUENCY ENERGY HARVESTING Negin Shahshahan, Master of Science, 2012 Directed by: Professor Neil Goldsman Department of Electrical and Computer Engineering In this work the operation of a MOSFET based rectifier, composed of multiple stages of voltage doubler circuits used for radio frequency (RF) energy harvesting, is investigated. Analytica...

Structural monitoring of critical bridge structures can greatly benefit from the use of wireless sensor networks (WSNs), however energy harvesting for the operation of the network remains a challenge in this setting. While solar and wind power are possible and credible solutions to energy generation, the need for positioning sensor nodes in shaded and sheltered locations, e.g., under a bridge d...

Vehicular sensor networks (VSN) enable brand new and promising sensing applications, such as traffic reporting, relief to environmental monitoring, and distributed surveillance. We have designed and implemented MobEyes, a middleware solution that supports VSN-based proactive urban monitoring applications, where the agents (e.g. police cars) harvest meta-data from regular VSN-enabled vehicles. I...

Wheat lodging provides important reference information for self-adaptive header control of a combine harvester. Aimed at real-time detection wheat lodging, this paper proposed method location and area based on binocular vision. In method, the angle relationship between stem vertical direction when is upright, inclined, was determined by mechanical analysis. The discrimination condition degree h...

Retention forestry is a harvesting system that intentionally retains important forest structures at harvest time. We examined the effect of dispersed retention on productivity and cost operations in large-scale field experiment conifer plantations Hokkaido, Japan. For retention, we retained broad-leaved trees three levels (10, 50, or 100 trees/ha). used daily operator reports investigated time ...