An experimental study of ultra-low power wireless sensor-based autonomous energy harvesting system

2017 ◽  
Vol 9 (5) ◽  
pp. 054702 ◽  
Author(s):  
Yuzhen Ma ◽  
Qing Ji ◽  
Song Chen ◽  
Gangbing Song
Keyword(s):  
Experimental Study ◽  
Energy Harvesting ◽  
Low Power ◽  
Wireless Sensor ◽  
Ultra Low Power ◽  
Energy Harvesting System

scholarly journals A Self-Powered PMFC-Based Wireless Sensor Node for Smart City Applications

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Daniel Ayala-Ruiz ◽  
Alejandro Castillo Atoche ◽  
Erica Ruiz-Ibarra ◽  
Edith Osorio de la Rosa ◽  
Javier Vázquez Castillo
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
Sensor Node ◽  
Smart Cities ◽  
Cloud Services ◽  
Environmental Data ◽  
Security And Privacy ◽  
Wireless Sensor ◽  
Ultra Low Power ◽  
Self Powered

Long power wide area networks (LPWAN) systems play an important role in monitoring environmental conditions for smart cities applications. With the development of Internet of Things (IoT), wireless sensor networks (WSN), and energy harvesting devices, ultra-low power sensor nodes (SNs) are able to collect and monitor the information for environmental protection, urban planning, and risk prevention. This paper presents a WSN of self-powered IoT SNs energetically autonomous using Plant Microbial Fuel Cells (PMFCs). An energy harvesting device has been adapted with the PMFC to enable a batteryless operation of the SN providing power supply to the sensor network. The low-power communication feature of the SN network is used to monitor the environmental data with a dynamic power management strategy successfully designed for the PMFC-based LoRa sensor node. Environmental data of ozone (O3) and carbon dioxide (CO2) are monitored in real time through a web application providing IoT cloud services with security and privacy protocols.

Wireless Vibration Sensing Without a Battery

2012 ◽  
Author(s):  
Haiying Huang ◽  
Yayu Hew
Keyword(s):  
Energy Harvesting ◽  
Power Consumption ◽  
Low Power ◽  
Strain Gauge ◽  
Sensor Node ◽  
Wireless Sensor ◽  
Low Power Consumption ◽  
Wireless Sensor Node ◽  
Signal Modulation ◽  
Ultra Low Power

This paper presents the implementation and characterization of a low power wireless vibration sensor that can be powered by a flash light. The wireless system consists of two components, namely the wireless sensor node and the wireless interrogation unit. The wireless sensor node includes a wireless strain gauge that consumes around 6 mW, a signal modulation circuit, and a light energy harvesting unit. To achieve ultra-low power consumption, the signal modulation circuit was implemented using a voltage-controlled oscillator (VCO) to convert the strain gauge output to an intermediate frequency (IF) signal, which is then used to alter the impedance of the sensor antenna and thus achieves amplitude modulation of the backscattered antenna signal. A generic solar panel with energy harvesting circuit is used to power the strain sensor node continuously. The wireless interrogation unit transmits the interrogation signal and receives the amplitude modulated antenna backscattering, which can be down-converted to recover the IF signal. In order to measure the strains dynamically, a Phase Lock Loop (PLL) circuit was implemented at the interrogator to track the frequency of the IF signal and provide a signal that is directly proportional to the measured strain. The system features ultra-low power consumption, complete wireless sensing, solar powering, and portability. The application of this low power wireless strain system for vibration measurement is demonstrated and characterized.

An Ultra-Low-Power Integrated RF Energy Harvesting System in 65-nm CMOS Process

2015 ◽  
Vol 35 (2) ◽  
pp. 421-441 ◽  
Author(s):  
Lian-xi Liu ◽  
Jun-chao Mu ◽  
Ning Ma ◽  
Wei Tu ◽  
Zhang-ming Zhu ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
Cmos Process ◽  
Rf Energy Harvesting ◽  
Ultra Low Power ◽  
Energy Harvesting System ◽  
Rf Energy

scholarly journals Ultra-low-power circuit techniques for mm-size wireless sensor nodes with energy harvesting

2014 ◽  
Vol 11 (20) ◽  
pp. 20142009-20142009 ◽  
Author(s):  
Hiroki Morimura ◽  
Shoichi Oshima ◽  
Kenichi Matsunaga ◽  
Toshishige Shimamura ◽  
Mitsuru Harada
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Wireless Sensor Nodes ◽  
Power Circuit ◽  
Ultra Low Power ◽  
Circuit Techniques

scholarly journals Sound Energy Harvesting Methods

2019 ◽  
Vol 8 (2S7) ◽  
pp. 316-320
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Energy Harvesting ◽  
Low Power ◽  
Wireless Sensor ◽  
Ultra Low Power ◽  
Sound Energy

This paper presents the various strategies and aspects of sound energy harvesting. We have discussed sound energy harvesting related to wireless sensor networks(WSNS) and regarding ultra low power requirements.

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