Micro-deformation piezoelectric energy collection device and method applied to road surface

Abstract

The invention discloses a micro-deformation piezoelectric energy collection device and method applied to a road surface. The device comprises a box body, an elastic rubber block arranged in the box body and a piezoelectric module arranged in the elastic rubber block. The piezoelectric module comprises a pressing plate, a cantilever beam piezoelectric module and a stacked piezoelectric module. Thepressing plate is arranged in the elastic rubber block, a rotating shaft is arranged on the pressing plate, and when the pressing plate rotates around the rotating shaft, the end, close to the cantilever beam piezoelectric module, of the pressing plate extrudes the cantilever beam piezoelectric module to generate voltage; and one end, far away from the cantilever beam piezoelectric module, of thepressing plate extrudes the stacked piezoelectric module to generate voltage. According to the invention, the cantilever beam piezoelectric module and the stacked piezoelectric module can be extrudedby the pressing plate at the same time to generate voltage, mechanical energy can be more effectively converted into electric energy, the generated electric energy can supply power to wireless sensingequipment in an intelligent traffic information acquisition system after being processed by an energy collection circuit, and the energy collection efficiency is higher.

Description

technical field [0001] The invention relates to the technical field of energy recovery and utilization, in particular to a micro-deformation piezoelectric energy collection device and collection method applied to road surfaces. Background technique [0002] As the most important transportation facilities, roads have played an important role in promoting economic development and providing convenience for people's production and life. The road carries the direct action of countless vehicles and pedestrians every day. The mechanical energy of these actions is usually reflected in the vibration, deformation, wear, cracking and other diseases of the road surface, and is finally dissipated in the environment in the form of heat energy. At this time, if the piezoelectric effect of piezoelectric materials can be used to convert mechanical energy into electrical energy, and the waste energy can be collected and used to power traffic sensor sensing nodes, a self-supplied piezoelectric...

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Problems solved by technology

Due to the need to ensure the comfort and safety of the vehicle, as well as the service life and working strength of the road, the piezoelectric energy harvesting device for the road needs to meet the characteristics of large load and small deformation. These two structures are directly applied to the energy in the road surface. The collection effect is not good

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