scholarly journals RADIOISOTOPE-POWERED IMPULSE RADIO FREQUENCY SENSOR NODE

2008 ◽  
Author(s):  
S. Tin ◽  
R. Duggirala ◽  
A. Lal ◽  
C. Pollock
Keyword(s):  
Radio Frequency ◽  
Sensor Node ◽  
Impulse Radio ◽  
Frequency Sensor ◽  
Radio Frequency Sensor

scholarly journals A simple, tunable, and highly sensitive radio-frequency sensor

2013 ◽  
Vol 103 (6) ◽  
pp. 062906 ◽  
Author(s):  
Yan Cui ◽  
Jiwei Sun ◽  
Yuxi He ◽  
Zheng Wang ◽  
Pingshan Wang
Keyword(s):  
Radio Frequency ◽  
Frequency Sensor ◽  
Highly Sensitive ◽  
Radio Frequency Sensor

A Radio Frequency Sensor Array for Dielectric Constant Estimation of Multiphase Oil Flow in Pipelines

2017 ◽  
Vol 17 (18) ◽  
pp. 5900-5907 ◽  
Author(s):  
Muhammad Tayyab ◽  
Mohammad S. Sharawi ◽  
Abdelsalam Al-Sarkhi
Keyword(s):  
Dielectric Constant ◽  
Radio Frequency ◽  
Sensor Array ◽  
Frequency Sensor ◽  
Oil Flow ◽  
Radio Frequency Sensor

Detection of cardiac activity using a 5.8 GHz radio frequency sensor

2009 ◽  
Author(s):  
V. Vasu ◽  
N. Fox ◽  
T. Brabetz ◽  
M. Wren ◽  
C. Heneghan ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Cardiac Activity ◽  
Frequency Sensor ◽  
Radio Frequency Sensor

scholarly journals Development of Radio-Frequency Sensor Wake-Up with Unmanned Aerial Vehicles as an Aerial Gateway

Sensors ◽  
2019 ◽  
Vol 19 (5) ◽  
pp. 1047 ◽  
Author(s):  
Jianfei Chen ◽  
Zhaohua Dai ◽  
ZhiQiang Chen
Keyword(s):  
Energy Efficiency ◽  
Radio Frequency ◽  
Unmanned Aerial Vehicles ◽  
Autonomous Navigation ◽  
Engineering Practice ◽  
Opportunistic Sensing ◽  
Aerial Vehicles ◽  
Frequency Sensor ◽  
Sensing Platform ◽  
Radio Frequency Sensor

The advent of autonomous navigation, positioning, and general robotics technologies has enabled the improvement of small to miniature-sized unmanned aerial vehicles (UAVs, or ‘drones’) and their wide uses in engineering practice. Recent research endeavors further envision a systematic integration of aerial drones and traditional contact-based or ground-based sensors, leading to an aerial–ground wireless sensor network (AG-WSN), in which the UAV serves as both a gateway besides and a remote sensing platform. This paper serves two goals. First, we will review the recent development in architecture, design, and algorithms related to UAVs as a gateway and particularly illustrate its nature in realizing an opportunistic sensing network. Second, recognizing the opportunistic sensing need, we further aim to focus on achieving energy efficiency through developing an active radio frequency (RF)-based wake-up mechanism for aerial–ground data transmission. To prove the effectiveness of energy efficiency, several sensor wake-up solutions are physically implemented and evaluated. The results show that the RF-based wake-up mechanism can potentially save more than 98.4% of the energy that the traditional duty-cycle method would otherwise consume, and 96.8% if an infrared-receiver method is used.

A Radio Frequency Sensor System for Prognostics and Health Management

2009 ◽  
Author(s):  
Shunfeng Cheng ◽  
Larry Thomas ◽  
Jason L. Cook ◽  
Michael Pecht
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Health Management ◽  
Failure Detection ◽  
Field Application ◽  
Sensor System ◽  
Prognostics And Health Management ◽  
Frequency Sensor ◽  
Frequency Identification ◽  
Radio Frequency Sensor

This paper introduces a radio frequency identification sensor system and its application for prognostics and health management. In prognostics and health management applications, the radio frequency identification sensor system collects data and transfers the data wirelessly into computers. The data then is analyzed by failure detection and prediction algorithms. The performance of the sensor system for prognostics and health management is demonstrated by a field application.

A Small Radio Frequency Sensor for Microwave Tumor Ablation

2018 ◽  
Author(s):  
Lulu Wang ◽  
Mengke Ge ◽  
Bensheng Qiu
Keyword(s):  
Computer Simulation ◽  
Radio Frequency ◽  
Microwave Spectrum ◽  
Tumor Ablation ◽  
Slot Antenna ◽  
Computer Simulation Model ◽  
Pig Liver ◽  
Tissue Samples ◽  
Frequency Sensor ◽  
Radio Frequency Sensor

This paper presents a small radio frequency sensor namely multi-slot antenna for liver tumor ablation at microwave spectrum. A computer simulation model was developed to validate the proposed antenna. The authors tested the proposed antenna on pig liver tissue samples. Both simulation and experimental results showed that the proposed multi-slot antenna has the potential for liver cancer treatment in the future.

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