Motion powered piezoelectric pulse generator for wireless sensing

MOTION-POWERED PIEZOELECTRIC PULSE GENERATOR FOR WIRELESS SENSING VIA FM TRANSMISSION

SATAMANYU DASHSWETA NANDA

Contents-:

Introduction Structure Analytical modelling of mechanical unit Simulation results Transmitter unit Conclusion

Introduction-:

Need

Structure-:

Mechanical unit Transmitter unit

Intermediate circuit

Analytical model-:

Vpiezo(t)=−Vth (D2 forward biased) Vload(t)=Vpiezo(t)−Vth (D1 is forward biased)

Fig. Simulation result of the prebiased pulse generation.

Transmission unit-:

Conclusion-:

This result is expected to enhance the energy density of low-frequency and impulse-excited piezoelectric harvesting devices.

The simulation results of the piezoelectric pulse generator are consistent with the experimental results. However, this analytical method ignores the mutual influence between the electrical changes and the mechanical changes of the piezoelectric beam, and a simulation model is under development by exploring a more comprehensive relationship between the tip displacement of the piezoelectric beam and the voltage generated.

References-:

Hao Jiang, Michail E. Kiziroglou , David C. Yates, and Eric M. Yeatman ,” A Motion-Powered Piezoelectric Pulse Generator for Wireless Sensing via FM Transmission” IEEE IOT Journal, Vol. 2, No. 1, Feb 2015

H. Jiang and E. M. Yeatman, “A piezoelectric pulse generator for low frequency non-harmonic vibration,” J. Phys., vol. 476, no. 1, 2013.

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