Harvested Power Wireless Sensor Network Solution for Disaggregated Current Estimation in Large Buildings

Abstract

In modern economies, large service buildings are responsible for an important part of the global electrical energy consumption. The implementation of energy saving strategies can benefit from disaggregated consumption monitoring. To tackle this problem, a number of technological solutions exist, being however, expensive in equipment, installation and maintenance. Because of its decentralized operation principle, wireless sensor networks (WSNs) are an important tool to implement disaggregated electrical energy monitoring. The development of a selfpowered, battery-free current sensor node for large WSNs may contribute to the implementation of monitoring solutions for large buildings. In this paper, a solution to monitor disaggregated consumption is presented, based on a contact-less power source for Zigbee nodes using a split-core toroidal coil current transformer (SCCT). The proposed device is able to power a battery-free wireless node estimating also the current drawn by the electrical load with a single SCCT. The SCCT is successfully applied to power a battery-free wireless device running a complex communication software stack. The proposed system is described through simulation as well as the experimental results.

Improved Data Center Energy Efficiency and Availability with Multilayer Node Event Processing

“…They allow users to pose declarative queries that provide an effective and efficient means to obtain data about the physical environment, as users would not need to be concerned with how sensors are to acquire the data, or how nodes transform and/or transmit the data. Standards for automated wireless networks in buildings and the reliability of wireless sensor networks are discussed in detail in References [12,13]. In Reference [14], tools with integrated processes called data center infrastructure management (DCIM) are discussed, where system connectivity and interrelationship among system operations to support data center operations managers are stressed out.…”

New combined method for low energy consumption in Wireless Sensor Network applications

“…Recent works promote the integration of the renewable energy as a remedy to improve energy efficiency. 30 Dgharkut and Lohiya 26 proposed implementing an EDF algorithm to schedule the entire tasks in WSNs by using m C/OS II RTOS, which helps to schedule tasks dynamically, enhances the throughput, reduces the overload, and also decreases the energy consumption in data transmission and routing.…”

“…Recent works promote the integration of the renewable energy as a remedy to improve energy efficiency. 30…”

Modeling and Simulation of an Autonomous Power Manager for Sensor Networks

“…So, we will try to combine several existing policies to have better results by taking into account the application requirements. Indeed, the recent studies move towards the employment of energy harvesting techniques as a solution to improve the energy efficiency [11]. The energy-scavenged in particular that coming from intermittent and variable sources (e.g., implantable batteries and capacitive methods), poses additional challenges like the availability.…”