In recent years there has been an increased interest in scavenging energy from ambient sources su... more In recent years there has been an increased interest in scavenging energy from ambient sources such as precipitation which is a freely available source occurring mainly in the form of raindrops. This work investigates the design analysis of a piezoelectric system, capable of converting the mechanical energy generated by the impact of water droplets into electrical energy. The system is not designed for any specific rain type and responds to the whole range of raindrops to provide energy to low-powered devices or applications. An off-the-shelf piezoelectric transducer with Polyvinylidene Difluoride (PVDF) polymer film was used as a water droplet impact harvester for this research. Detailed analysis of water droplet impact harvester shows two distinct stages in the voltage output, first a logarithmic growth, then an exponential decay during a single droplet impact event. The energy of the growth stage was found to be much higher than that of the decay stage. Thus, growth stage of the ...
AbstractEffective use of upper extremity prostheses depends on the two critical aspects of preci... more AbstractEffective use of upper extremity prostheses depends on the two critical aspects of precise position and force control. Surface electromyographic (sEMG) signals can be used as a control input for the position and force actions related to the prosthesis. In this paper, ...
In recent years there has been an increased interest in scavenging energy from ambient sources su... more In recent years there has been an increased interest in scavenging energy from ambient sources such as precipitation which is a freely available source occurring mainly in the form of raindrops. This work investigates the design analysis of a piezoelectric system, capable of converting the mechanical energy generated by the impact of water droplets into electrical energy. The system is not designed for any specific rain type and responds to the whole range of raindrops to provide energy to low-powered devices or applications. An off-the-shelf piezoelectric transducer with Polyvinylidene Difluoride (PVDF) polymer film was used as a water droplet impact harvester for this research. Detailed analysis of water droplet impact harvester shows two distinct stages in the voltage output, first a logarithmic growth, then an exponential decay during a single droplet impact event. The energy of the growth stage was found to be much higher than that of the decay stage. Thus, growth stage of the ...
AbstractEffective use of upper extremity prostheses depends on the two critical aspects of preci... more AbstractEffective use of upper extremity prostheses depends on the two critical aspects of precise position and force control. Surface electromyographic (sEMG) signals can be used as a control input for the position and force actions related to the prosthesis. In this paper, ...
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