A5075451088- Molecular Communication and Nanonetworks
- Wireless Body Area Networks
- Energy Efficient Wireless Sensor Networks
- Energy Harvesting in Wireless Networks
- IoT and Edge/Fog Computing
- Innovative Energy Harvesting Technologies
- Neuroscience and Neural Engineering
- Bluetooth and Wireless Communication Technologies
- Air Quality Monitoring and Forecasting
- Water Quality Monitoring Technologies
- Context-Aware Activity Recognition Systems
- Tracheal and airway disorders
- Dysphagia Assessment and Management
- Voice and Speech Disorders
Purdue University West Lafayette
2019-2022
Stretchable skin sensor patch tailored for submental areas is developed remote management of swallowing disorders.
Abstract Radiative communication using electromagnetic fields is the backbone of today’s wirelessly connected world, which implies that physical signals are available for malicious interceptors to snoop within a 5–10 m distance, also increasing interference and reducing channel capacity. Recently, Electro-quasistatic Human Body Communication (EQS-HBC) was demonstrated utilizes human body’s conductive properties communicate without radiating outside body. Previous experiments showed an attack...
Decades of continuous scaling has reduced the energy unit computing to virtually zero, while energy-efficient communication remained primary bottleneck in achieving fully energy-autonomous Internet-of-Things (IoT) nodes. This article presents and analyzes tradeoffs between energies required for computation a wireless sensor network, deployed mesh architecture over 2400-acre university campus, is targeted toward multisensor measurement temperature, humidity water nitrate concentration smart...
Low-power secure communication is one of the key enablers applications, such as authentication and remote health monitoring. Radio wave-based method, Bluetooth, suffers from high-power requirements physical signal leakage. Electro-quasi-static human body (EQS-HBC) utilizes conductivity to use it a medium confine within close proximity enable low power consumption through low-frequency operation. This makes EQS-HBC an attractive alternative for low-power, low-data-rate communication. In this...
Applications such as secure authentication, remote health monitoring require secure, low power communication between devices around the body. Radio wave protocols, Bluetooth, suffer from problem of signal leakage and high requirement. Electro QuasiStatic Human Body Communication (EQS-UBC) is ideal alternative it confines within body also operates at order magnitude lower power. In this paper, we design a HBC SoC node, which uses EQS-UBC for physical security an AES-256 core mathematical...
Human Body Communication has shown great promise to replace wireless communication for information exchange between wearable devices of a body area network. However, there are very few studies in literature, that systematically study the channel loss capacitive HBC over wide frequency range with different terminations at receiver, partly due need miniaturized an accurate study. This paper, first time, measures from 100KHz 1GHz both high-impedance and 50Ω using wearable, battery powered...
Intensive research on energy-harvested sensor nodes has been driven by the challenges in achieving stringent design goals of battery lifetime, information accuracy, transmission distance, and cost. This challenge is further amplified inherent power-intensive nature long-range communication when networks are required to span vast areas, such as agricultural fields remote terrain. Solar power a common energy source wireless nodes, however, it not reliable due fluctuations available stemming...
Continuous multi-channel monitoring of biopotential signals is vital in understanding the body as a whole, facilitating accurate models and predictions neural research. The current state art wireless technologies for untethered recordings rely on radiative electromagnetic (EM) fields. In such transmissions, only small fraction this energy received since EM fields are widely radiated resulting lossy inefficient systems. Using communication medium (similar to 'wire') allows containment within...
Continuous multi-channel monitoring of biopotential signals is vital in understanding the body as a whole, facilitating accurate models and predictions neural research. The current state art wireless technologies for untethered recordings rely on radiative electromagnetic (EM) fields. In such transmissions, only small fraction this energy received since EM fields are widely radiated resulting lossy inefficient systems. Using communication medium (similar to 'wire') allows containment within...
Decades of continuous scaling has reduced the energy unit computing to virtually zero, while energy-efficient communication remained primary bottleneck in achieving fully energy-autonomous IoT nodes. This paper presents and analyzes trade-offs between energies required for computation a wireless sensor network, deployed mesh architecture over 2400-acre university campus, is targeted towards multi-sensor measurement temperature, humidity water nitrate concentration smart agriculture. Several...
Intensive research on energy harvested sensor nodes with traditional battery powered devices has been driven by the challenges in achieving stringent design goals of lifetime, information accuracy, transmission distance, and cost. This challenge is further amplified inherent power intensive nature long-range communication when networks are required to span vast areas such as agricultural fields remote terrain. Solar a common source wireless nodes, however, it not reliable due fluctuations...