Authors:
Nuno Silva
1
;
Paulo Santos
1
;
Raul Morais
2
;
Clara Frias
3
;
Jorge Ferreira
4
;
António Ramos
4
;
José A. Simões
4
and
Manuel J. C. S. Reis
5
Affiliations:
1
UTAD University, Portugal
;
2
CITAB/UTAD and UTAD University, Portugal
;
3
Faculdade de Engenharia do Porto, Portugal
;
4
Universidade de Aveiro, Portugal
;
5
Instituto de Engenharia Electrónica e Telemática de Aveiro/UTAD, Portugal
Keyword(s):
Energy harvesting, Hip prosthesis, Biomedical implant, Telemetry.
Related
Ontology
Subjects/Areas/Topics:
Biomedical Engineering
;
Biomedical Instruments and Devices
;
Biotelemetry
;
Embedded Signal Processing
;
Implantable Electronics
;
Wireless Systems
Abstract:
Using the new trend of energy harvesting, an envisioned electromagnetic power transducer that uses human gait to produce electrical energy is presented as a solution to energize biomedical devices. Regardless of the walking speed, starting at 0.7 Hz, it is possible to store a total energy of 2.2 mJ, using two 1000 µF capacitors as energy storage elements. Afterwards, this energy becomes available to the telemetric system through an efficient power management module. Since the end application, an implantable biomedical telemetric system, needs a total of 360 µJ to operate, the here presented power transducer is well suited for implant power needs.