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A Novel Design of Piezoelectric Power Generator in Tire

Author: ZhongZhengQing
Tutor: LiaoHaiYang
School: Chongqing University
Course: Optical Engineering
Keywords: Piezoelectric Power generator convertor array Finite element analyze multiple path charge coupling circuit power control circuit
CLC: TM31
Type: Master's thesis
Year: 2009
Downloads: 292
Quote: 4
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Abstract


Nowadays the TPMS has gained wildly attention in protecting drivers away from tire explosion or car accidents. But the power supply of TPMS is still using chemical batteries, which can not work effectively during the long periodic of working in tire. Then engineers bring in a new kind of micro generator by collecting environment energy. This kind of generator applies the electromagnetism, static electricity and piezoelectricity to translate the mechanical energy into electric energy in environment with vibration. Especially the research on piezoelectric material has gained widely attention which is popular with its advantage: energy saving, brief structure and easily obtained. It is prosperous to be applied in restricted limitation of battery and fuel.While the TPMS has been more and more popular in today’s application, its power source has still state in chemical batteries. The are as big as wireless systems, or even bigger that can’t properly placed in car, otherwise charging them can be a big problem because of the changing of vacuum tires will cost a lot, etc. It would help when we brought in the piezoelectric vibration generator. We can combine the piezoelectric vibrators and tire together and obtain output voltage by harvesting the energy of deformation and vibrations while the tires rolling. Those vibrators can supply the wireless TPMS efficiently.In his article, the current situation of piezoelectric power generation is primarily introduced as well as its diverse actual application. Based on the idea, here comes a new concept of translating mechanical energy into electric energy by the deformation of the rotating tire. In the research the PZT would be positioned in piezoelectricity ceramics and provide the stress monitoring system of auto tire with electricity by piezoelectricity affect. Ensuring that, from the basic theory of piezoelectricity, the paper design model would be analyzed with theory and numerical analysis. In this matter of fact, we could obtain finite element model the simulation analysis of which would be done by the finite element analysis software ANSYS and optimize the model size by exporting the result. Eventually, after the design has been achieved, it could be applied in TPMS system. Then the multiple patch charge coupling power conditioning circuit was obtained to increase the output current of the PZT arrays. Experimental test shows that the output voltage of power managing circuit can reach 5V and the instant transmitting current can be 10mA last for 15ms. At last, the sum-up of the whole-length in which the next work is showed.

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CLC: > Industrial Technology > Electrotechnical > Motor > Generators, large the generator group ( Zonglun,)
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