This paper presents a fluidic device capable of generating electrical micro-power from a steady air pressure source. The Fluidic Driven Piezoelectric Generator (FDPG) relies on a fluidic pressure-controlled oscillator, a fluidic linear proportional amplifier with its output ports connected to its input ports, to convert a steady air pressure into an oscillating air pressure. The piezoelectric device then converts the oscillating air pressure into an AC electrical voltage that is available for rectification and subsequent source of electrical power. This project has demonstrated that the FDPG produces 0.55W of electrical power, with an air pressure supply of 2.0 psig. This translates to an efficiency of 35%. This paper compares the predicted power level output of an analytical model to the proof-of-concept plastic model. The fluidic oscillator model was implemented in an equivalent electrical circuit using PSPICE. This approach has applications in remote or portable pneumatic applications where intelligent instrumentation and control are needed yet no battery or auxiliary electrical power is available to drive an electronic microcontroller.

Drzewiecki, T.M., Macia, N.F., “Fluidic Technology: Adding Control, Computation and Sensing Capability to Microfluidics.” Microtechnologies for the New Millennium: Smart Sensors, Actuators and MEMS, SPIE, Gran Canaria, Spain, 2003.
Macia, N.F., “Construction of a Microfluidic, Bi-stable, Fluid Amplifier Using the Nickel Electroforming Method,” 2001 SPIE Symposium on BioFluidics and BioMEMS, San Francisco, CA.
Nguyen, Ha Van, Fluid Driven Piezoelectric Generator, Master of Technology Applied Project Report, December 2001.
Macia, N.F. and Thaler, G.J., Modeling and Control of Dynamic Systems, Thomson Delmar Learning, 2004.
The Design Center, Circuit Analysis - Application Notes Manual, MicroSim Corporation, January 1993.
This content is only available via PDF.
You do not currently have access to this content.