Improved piezoceramic energy harvesting circuit for self-powered wireless sensor nodes

2011 ◽  
Author(s):  
Davide Carli ◽  
Marco Cerigato ◽  
Massimiliano Ruggeri
Keyword(s):  
Energy Harvesting ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Wireless Sensor Nodes ◽  
Self Powered

scholarly journals A Nonlinear Electromagnetic Energy Harvesting System for Self-Powered Wireless Sensor Nodes

2019 ◽  
Vol 8 (1) ◽  
pp. 18 ◽  
Author(s):  
Kankan Li ◽  
Xuefeng He ◽  
Xingchang Wang ◽  
Senlin Jiang
Keyword(s):  
Energy Harvesting ◽  
Electromagnetic Energy ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Wireless Sensor Nodes ◽  
Interface Circuit ◽  
Electromagnetic Energy Harvesting ◽  
Energy Harvesting System ◽  
Self Powered ◽  
Nonlinear Interface

The Internet of things requires long-life wireless sensor nodes powered by the harvested energy from environments. This paper proposes a nonlinear electromagnetic energy harvesting system which may be used to construct fully self-powered wireless sensor nodes. Based on a nonlinear electromagnetic energy harvester (EMEH) with high output voltage, the model of a nonlinear interface circuit is derived and a power management circuit (PMC) is designed. The proposed PMC uses a buck–boost direct current-direct current (DC–DC) converter to match the load resistance of the nonlinear interface circuit. It includes two open-loop branches, which is beneficial to the optimization of the impedance matching. The circuit is able to work even if the stored energy is completely drained. The energy harvesting system successfully powered a wireless sensor node. Experimental results show that, under base excitations of 0.3 g and 0.4 g (where 1 g = 9.8 m·s−2) at 8 Hz, the charging efficiencies of the proposed circuit are 172% and 28.5% higher than that of the classic standard energy-harvesting (SEH) circuit. The experimental efficiency of the PMC is 41.7% under an excitation of 0.3 g at 8 Hz.

Light and Pressure Sensors Based on PVDF With Sprayed and Transparent Electrodes for Self-Powered Wireless Sensor Nodes

2019 ◽  
Vol 19 (3) ◽  
pp. 1114-1126 ◽  
Author(s):  
Marco Bobinger ◽  
Sherif Keddis ◽  
Stefan Hinterleuthner ◽  
Markus Becherer ◽  
Fabian Kluge ◽  
...  
Keyword(s):  
Pressure Sensors ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Transparent Electrodes ◽  
Wireless Sensor Nodes ◽  
Self Powered
Sign in / Sign up

Export Citation Format

Share Document