A micro-deformation piezoelectric energy collection device and collection method applied to road surfaces

A piezoelectric energy collection device technology, which is applied to circuit devices, battery circuit devices, piezoelectric effect/electrostrictive or magnetostrictive motors, etc., can solve the problem of small deformation, poor energy collection effect, and load bearing Large and other problems, to achieve the effect of safety assurance, high energy collection efficiency, and comfort

CN112072957BActive Publication Date: 2021-04-20SHENZHEN TECH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-04-20

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Abstract

The invention discloses a micro-deformation piezoelectric energy collection device and collection method applied to road surfaces. The device includes 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 includes Platen, cantilever piezoelectric modules, and stacked piezoelectric modules. The pressing plate is arranged in the elastic rubber block, and the pressing plate is provided with a rotating shaft. When the pressing plate rotates around the rotating shaft, the end of the pressing plate close to the piezoelectric module of the cantilever beam will squeeze the piezoelectric module of the cantilever beam to generate voltage; the pressing plate is far away from the cantilever beam One end of the piezoelectric module is pressed against the stacked piezoelectric modules to generate a voltage. In the present invention, the voltage can be generated by simultaneously pressing the cantilever beam piezoelectric module and the stacked piezoelectric module by the pressing plate, which can more effectively convert mechanical energy into electrical energy, and the generated electrical energy can be sent to the intelligent traffic information after being processed by the energy collection circuit. The wireless sensing devices in the harvesting system are powered, and the energy harvesting 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 facility, roads play 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 the sensing nodes of traffic sensors, a self-powered piezoelectric t...

Examples

Embodiment Construction

[0048] In order to make the objectives, technical solutions and effects of the present invention clearer and clearer, 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 herein are only used to explain the present invention, but not to limit the present invention.

[0049] As the most important transportation facility, roads play 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 highways 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 4,698,700 kilometers, and the mileage of expressways was 669,400 kilometers. In September 2019, each truck traveled an average of 190 kilometers per day, tr...