Development and Piezoelectric Properties of a Stack Units-Based Piezoelectric Device for Roadway Application

Sensors

Peng Lin¹  Chaoliang Fu²  Quan Liu²  Pengfei Liu²  Hongduo Zhao³  Chenchen Li³  Fan Yang³ 

[1] Civil Engineering and Geosciences, Delft University of Technology, 2628 CN Delft, The Netherlands;Institute of Highway Engineering (ISAC), RWTH Aachen University, 52074 Aachen, Germany;The Key Laboratory of Road and Traffic Engineering, Ministry of Education, Tongji University, Shanghai 201804, China;

关键词: pavement engineering;    energy harvesting;    piezoelectric device;    stacked piezoelectric unit;    piezoelectric properties;    roadway application;   

DOI  :  10.3390/s21227708

来源: DOAJ

【 摘 要 】

To improve the energy harvesting efficiency of the piezoelectric device, a stack units-based structure was developed and verified. Factors such as stress distribution, load resistance, loads, and loading times influencing the piezoelectric properties were investigated using theoretical analysis and experimental tests. The results show that the unit number has a negative relationship with the generated energy and the stress distribution has no influence on the power generation of the piezoelectric unit array. However, with a small stress difference, units in a parallel connection can obtain high energy conversion efficiency. Additionally, loaded with the matched impedance of 275.0 kΩ at 10.0 kN and 10.0 Hz, the proposed device reached a maximum output power of 84.3 mW, which is enough to supply the low-power sensors. Moreover, the indoor load test illustrates that the electrical performance of the piezoelectric device was positively correlated with the simulated loads when loaded with matched resistance. Furthermore, the electrical property remained stable after the fatigue test of 100,000 cyclic loads. Subsequently, the field study confirmed that the developed piezoelectric device had novel piezoelectric properties with an open-circuit voltage of 190 V under an actual tire load, and the traffic parameters can be extracted from the voltage waveform.

【 授权许可】

Unknown