Trampling simply supported beam piezoelectric generating device

Abstract

The invention relates to a trampling simply supported beam piezoelectric generating device which comprises an angle iron framework, two crossties, bolts, a rubber gasket and multiple groups of simply supported beam piezoelectric units, wherein the two crossties are fixedly arranged on the angle iron framework; the multi groups of simply supported beam piezoelectric units are arranged on the crossties in sequence in a simply supported mode through the bolts; the rubber gasket covers the multiple groups of simply supported beam piezoelectric units; each simply supported beam piezoelectric unit is composed of a beam and piezoelectric ceramic plates, the plurality of piezoelectric ceramic plate are stuck on the inner side of the beam; the piezoelectric material of the piezoelectric ceramic plates is lead-zirconate titanates (PZT-5A) material, the beam is a long rectangular slice and is made of alloy steel; leads are respectively led out from each electrode on the upper and lower surfaces of the piezoelectric ceramic plates so as to connect all the simply supported beam piezoelectric units in parallel. The device provided by the invention can be placed in crowded places or indoor corridors for collecting energy generated by walk trampling and covert the energy into electric energy; therefore the device can be applied to auxiliary lighting or emergency lighting.

Description

technical field [0001] The invention relates to a power generation device, in particular to a stepped simply supported beam piezoelectric power generation device, which belongs to the field of energy-saving technology and energy utilization in practical engineering. Background technique [0002] Piezoelectric ceramics have good force-electric conversion characteristics. The cantilever beam single crystal vibration generator made of it can capture the vibration energy in the environment. The external excitation of the cantilever beam causes the ceramic sheet to bend and deform. The piezoelectric body is under the action of its own positive piezoelectric effect. , to generate electric energy, continuous vibration excitation can generate continuous electric energy output. [0003] At present, the use of piezoelectric materials for power generation mainly relies on cantilever beam structures and direct stepping on piezoelectric materials to collect electrical energy. The former...

AI Technical Summary

Problems solved by technology

The former has strong power generation capacity, but the cantilever beam structure is not suitable for direct trampling. Although the overall structure of the latter is simple, the trampling frequency is low, and even if it is stimulated by adult trampling, the deformation of the piezoelectric material is still small, and the power generation under a single excitation is small.

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