Optics and Precision Engineering, Volume. 17, Issue 6, 1327(2009)

Design of piezoelectric power generator in tire

LIAO Hai-yang* and ZHONG Zheng-qing
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  • [in Chinese]
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    A novel power generator in the tire which is applied in a wireless Tire Pressure Monitor System(TPMS) was designed. The piezoelectric convertor constructed by bender arrays was merged to the inner surface of a tire to transform the mechanical deformation into the electric power and supply to the sensors of TPMS. A Finite Element Model(FEM) for the convertor was established based on the second piezoelectric function and the piezoelectric convertor with different sizes was analyzed by ANSYS 11.0 in a transient method. Then,a target of 6 cm2 was selected to observe its characteristics,and the effective current is 5 μA. As the wireless sending component needs 10 mA every 30 s,an array with 40 piezoelectric convertors was used in the generator and a power conditioning circuit with a multiple path charge coupling module was also designed. Experiments show that when the frequency of tire rotation is 15 Hz,the average power through the conditioning circuit is 150-350 μW and the instantaneous power can reach 50 mW,which proves that the power generator can work efficiently.

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    LIAO Hai-yang, ZHONG Zheng-qing. Design of piezoelectric power generator in tire[J]. Optics and Precision Engineering, 2009, 17(6): 1327

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    Paper Information

    Received: Jan. 20, 2009

    Accepted: --

    Published Online: Aug. 28, 2009

    The Author Email: Hai-yang LIAO (hyliao@cqu.edu.cn)

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