Abstract: An energy harvesting module includes a pendular unit with piezoelectric transducer elastically deformable in bending between a clamped end and a free end coupled to an inertial mass. The piezoelectric transducer includes two coplanar piezoelectric beams arranged side-by-side on either side of a central axis of the transducer, each of the piezoelectric beams including adjacent external and internal arms, arranged side-by-side and formed single-piece. The external arm of each beam has a clamped proximal end and a free distal end, and the internal arm of each beam has a free proximal end supporting the inertial mass, and a free distal end connected to the distal end of the adjacent external arm by a common junction.

Abstract: A module includes a pendular unit with piezoelectric transducer elastically deformable in bending with a clamped end and a free end coupled to an inertial mass. The piezoelectric transducer includes at least one piezoelectric beam configured into two adjacent arms formed single-piece, with an external arm and an internal arm arranged side-by-side. The external arm has a clamped proximal end and a free distal end, and the internal arm has a free proximal end supporting the inertial mass, and a free distal end connected to the distal end of the adjacent external arm. An annular mount surrounds the beam at its proximal end and includes the clamp to which is fastened the proximal end of the external arm. The mount includes, in a central region in the vicinity of the clamp, a cavity inside which the inertial mass carried by the free proximal end of the internal arm can oscillate.