TMS320F28335-based piezosensor monitor-node

TMS320F28335 (real-time digital signal processor of Delfino-family) is an ideal platform for developing of ultrasound (in the frequency range of up to 1 MHz) “almost-single-chip” piezosensor based measuring devices. Preliminary prototype of measurement sensor node, capable of measuring impedance spectra of the piezosensor, but also of sending and catching of the ultrasound measurement signal bursts for monitoring of the structure under test, has been developed and tested. Using of internal flash-memory of the DSP, enhanced high-resolution PWM and internal multichannel ADC allows to make very efficient (in form size, cost and power consumption) solution, as demonstrated.