scholarly journals Energy-Harvesting Powered Variable Storage Topology for Battery-Free Wireless Sensors

Technologies ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 106 ◽  
Author(s):  
Firdaous El Mahboubi ◽  
Marise Bafleur ◽  
Vincent Boitier ◽  
Jean-Marie Dilhac
Keyword(s):  
Energy Harvesting ◽  
Wireless Sensors ◽  
State Of Charge ◽  
Energy Usage ◽  
Main Concept ◽  
Small Capacitance ◽  
Start Up ◽  
Speed Up ◽  
Energy Autonomy ◽  
Usage Efficiency

The energy autonomy of wireless sensors is one of the main roadblocks to their wide deployment. The purpose of this study is to propose simple adaptive storage architecture, which combined with energy harvesting, could replace a battery. The main concept is based on using several ultracapacitors (at least two) that are reconfigured in a series or in parallel according to its state of charge/discharge, either to speed up the startup of the powered system or to provide energy autonomy. The proposed structure is based on two ultra-capacitors, one of small capacitance value and one of big value. Powered by an energy-harvesting source, the devised control circuitry allows cold start up with empty ultra-capacitors, pre-regulated output voltage, and energy usage efficiency close to 94.7%.

scholarly journals Fast Design Space Exploration of Vibration-Based Energy Harvesting Wireless Sensors

2013 ◽  
Vol 13 (11) ◽  
pp. 4393-4401 ◽  
Author(s):  
Tom J. Kazmierski ◽  
Leran Wang ◽  
Geoff V. Merrett ◽  
Bashir M. Al-Hashimi ◽  
Mansour Aloufi
Keyword(s):  
Energy Harvesting ◽  
Wireless Sensors ◽  
Design Space Exploration ◽  
Design Space ◽  
Space Exploration

Design of an enhanced RF energy harvesting system for wireless sensors

2013 ◽  
Author(s):  
Ahmed Al-Khayari ◽  
Hamed Al-Khayari ◽  
Sulaiman Al-Nabhani ◽  
Mohammed M. Bait-Suwailam ◽  
Zia Nadir
Keyword(s):  
Energy Harvesting ◽  
Wireless Sensors ◽  
Rf Energy Harvesting ◽  
Energy Harvesting System ◽  
Rf Energy

scholarly journals A strategy to speed up formation and strengthen activity of biofilms at low temperature

RSC Advances ◽  
2017 ◽  
Vol 7 (37) ◽  
pp. 22788-22796 ◽  
Author(s):  
Huizhi Hu ◽  
Junguo He ◽  
Huarong Yu ◽  
Jian Liu ◽  
Jie Zhang
Keyword(s):  
Low Temperature ◽  
Biofilm Reactors ◽  
Start Up ◽  
Long Time ◽  
Speed Up

The start-up period of biofilm reactors often takes a long time to obtain a mature and stable biofilm, especially at low temperature.

Energy Harvesting Wireless Sensors

2008 ◽  
pp. 195-208
Author(s):  
S.W. Arms ◽  
C.P. Townsend ◽  
D.L. Churchill ◽  
M.J. Hamel ◽  
M. Augustin ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Wireless Sensors

A Wireless Body Area Sensor Based IOT Scheme for Healthcare Applications

2021 ◽  
Author(s):  
Anna Palagan C ◽  
Sanjai Gupta ◽  
Anand J Dhas ◽  
Shrikant Taware ◽  
Ravi Chakravarthi R ◽  
...  
Keyword(s):  
Health Care ◽  
Heart Rate ◽  
Psychological Health ◽  
Wireless Sensors ◽  
Base Station ◽  
Health State ◽  
Body Area ◽  
Healthcare Applications ◽  
Speed Up ◽  
Physical And Psychological Health

Abstract Between the collections of applications allowed by the IoT, smart and linked health care may be mainly vital one. Networked sensors, either damaged on body or entrenched in atmospheres, alter the assembly of wealthy info symptomatic of our physical and psychological health. For example, heart patient parameter such as BP, heart rate and activities of fetal to regulate their health state. In this paper, a coordinator node has devoted on patient’s body to gather all the signals from the wireless sensors and directs them to base station. The involved sensors on patient’s body form a WBAN and they are talented to sense the heart rate, BP and so on. This scheme can notice the irregular conditions, problem an alarm to the patient and direct a message to the clinician, ambulance and family. The focal benefit of this scheme in assessment to earlier systems is to decrease the energy consumption to extend the network period, speed up and encompass the statement coverage to upsurge the choice for enhance patient superiority of lifetime. Here, we focus the chances and tasks for WSN in understanding this idea of longer term of health care.

Sign in / Sign up

Export Citation Format

Share Document