Welcome to the EnHANTs Project!
In this project we are developing Energy-Harvesting Active Networked Tags (EnHANTs). EnHANTs are small, flexible, and energetically self-reliant devices that can be attached to objects that are traditionally not networked (e.g., books, furniture, walls, doors, toys, keys, clothing, and produce), thereby providing the infrastructure for various novel tracking applications. Examples of these applications include locating misplaced items, continuous monitoring of objects (items in a store, boxes in transit), and determining locations of disaster survivors.
Recent advances in ultra-low-power wireless communications, ultra-wideband (UWB) circuit design, and organic electronic harvesting techniques will enable the realization of EnHANTs in the near future. In order for EnHANTs to rely on harvested energy, they have to spend significantly less energy than Bluetooth, Zigbee, and IEEE 802.15.4a devices. Moreover, the harvesting components and the ultra-low-power physical layer have special characteristics whose implications on the higher layers have yet to be studied (e.g., when using ultra-low-power circuits, the energy required to receive a bit is significantly higher than the energy required to transmit a bit).
The objective of the project is to design hardware, algorithms, and software to enable the realization of EnHANTs. This interdisciplinary project includes 5 PIs in the departments of Electrical Engineering and Computer Science at Columbia University with expertise in energy-harvesting devices and techniques, ultra-low power integrated circuits, and energy efficient communications and networking protocols.
The project is supported in part by:
Three different papers by EnHANTs project members have been recently published in the IEEE Journal on Selected Areas in Communications (JSAC), special issues on wireless communications powered by energy harvesting and wireless energy transfer (Vol. 33, no. 3 and no. 9, 2015).
2. "Iterative Dynamic Water-Filling for Fading Multiple-Access Channels With Energy Harvesting" - authored by Zhe Wang, Xiaodong Wang and their collaborator Vaneet Aggarwal (Purdue University).
3. "Outage Minimization for a Fading Wireless Link With Energy Harvesting Transmitter and Receiver" - authored by Tingjun Chen and his former advisors and collaborators Sheng Zhou, Wei Chen, and Zhisheng Niu (Tsinghua University).
The EnHANTs project was recently referenced in the Cisco Technology News Site Blog, "the network". The article is titled "The Internet of Everything Goes to School", and discusses efforts to boost educational programs that involve skills related to the Internet of Things (IoT). The EnHANTs project has been a pioneer in educating students on the IoT, with the outcomes of our teaching objectives recently documented in an arXiv report.
The EnHANTs Project and an Interview with Prof. Kinget highlighted in IEEE Communications Technology News
Marco Daldoss won first prize at the "Innovation Design Contest 2014" with the project "Agostino Board”, an energy harvesting framework for Wireless Sensor Networks. The contest has been organized by "Selezione di Elettronica", one of the most relevant magazines in the electronics field, which began in 1957. The 2nd annual contest, supported by "Politecnico di Milano", aims to encourage newly graduated students to demonstrate their talents and creativity, seeking and awarding excellence in the design of on- or off-chips.
The project has been directly supervised by Prof. Kinget and developed in the Computer Integrated System Laboratory in the department of Electrical Engineering at Columbia University in New York City. Agostino Board can be connected to various sensors (such as temperature or humidity) and, with the help of a solar cell, can operate with just the energy harvested in an typical indoor environment (without the need to replace the battery). The device can find several application in environmental and biomedical monitoring. Following with this recent accomplishment, Marco has been invited to visit a Freescale research center in Texas the incoming June.
For more info, see:
Five different publications and presentations have been recently contributed by different members of the EnHANTs project:
- ACM MobiHoc 2014: A paper authored by Jelena Marasevic, Cliff Stein and Gill Zussman titled “Max-min Fair Rate Allocation and Routing in Energy Harvesting Networks: Algorithmic Analysis,” will be presented in the upcoming ACM MobiHoc 2014 conference to be held in August 2014 in Philadelphia, PA.
- IEEE ISIT 2014: A paper authored by Zhe Wang, Vaneet Aggarwal and Xiaodong Wang titled "Optimal Energy-Bandwidth Allocation for Energy Harvesting Interference Networks," was recently presented in the IEEE ISIT conference held in Honolulu, HI in June 2014.
- ACM MobiSys 2014: An extended abstract by Robert Margolies titled “The Internet of Tags: Energy-harvesting adaptive algorithms,” was recently presented at the PhD Forum of ACM MobiSys 2014 in June 2014 in Bretton Woods, NH.
- IEEE Journal of Solid-State Circuits: A paper co-authored by Baradwaj Vigraham and Peter Kinget titled "A Self-dutycycled and Synchronized UWB Pulse-Radio Receiver SoC with Automatic Threshold-Recovery Based Demodulation,” has been published in the March 2014 issue of IEEE Journal of Solid-State Circuits.
- GE Student Research Summit: A poster titled “Energy Harvesting Active Networked Tags (EnHANTs) Prototype Development” will be presented by Earvin Caceres in the upcoming GE Student Research Summit to be held in August 2014 in Niskayuna, NY.