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

A piezoelectric energy and collection device technology, applied in circuit devices, battery circuit devices, piezoelectric effect/electrostrictive or magnetostrictive motors, etc. Small and other problems, to achieve the effect of safety assurance, high energy collection efficiency, and comfort

CN112072957AActive Publication Date: 2020-12-11SHENZHEN TECH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-12-11

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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.
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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...

Examples

Embodiment Construction

[0048] In order to make the object, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0049] 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. According to research, by the end of 2019, the total mileage of national roads was 5.0125 million kilometers, and the road density was 52.21 kilometers per 100 square kilometers. At the end of 2019, the national highway mileage of grade 4 and above was 4.6987 million kilometers, and the expressway lane mileage was 669,400 kilometers. In September 2019, each truck traveled an average of 190 kilometers per day...