48results about How to "Broaden the working frequency band" patented technology

The invention discloses a piezoelectric vibration energy collection device. The piezoelectric vibration energy collection device comprises a cantilever bimorph vibrator, a quality block, a first linear spring, a second linear spring, a base, a first hinge, a second hinge and a third hinge, one end of the cantilever bimorph vibrator is fixedly connected with a first support plate of the base, the other end of the cantilever bimorph vibrator is bonded with the quality block, the first hinge is arranged in the center of the quality block, the first hinge is connected with one end of the first linear spring and one end of the second linear spring separately, the second hinge and the third hinge are separately arranged on a second support plate of the base, the second hinge and the third hingeare respectively connected with the other end of the first linear spring and the other end of the second linear spring, the first hinge, the second hinge and the third hinge are in the same vertical plane and form an isosceles triangle, and the second hinge and the third hinge are symmetrically distributed on the second support plate with the cantilever bimorph vibrator as the center. The piezoelectric vibration energy collection device can perform periodic vibration drastically and easily even under conditions of low environment excitation strength and no strong magnetic field impact, and cancollect environment vibration energy under broadband efficiently.