CAJ | 학술논문

由于电动汽车的广泛推广及其智能化发展的需求，车载传感器数量激增，传统供能方式诸如污染、维护困难等缺陷日渐凸显。考虑到车载环境中振动无处不在，利用压电技术对振动能量进行收集，设计压电式振动能量收集系统以用来解决微功耗传感器供能问题。文中对系统的结构以及数学模型进行了理论分析，给出了系统振动频率的数学模型以及压电输出的数学模型，在仿真分析的基础之上设计了一套压电能量收集装置，并对其共振情况下的发电性能进行了实验测试。实验结果表明提出的理论模型可以很好的预测系统的输出特性，在共振频率为11.6 Hz，加速度为0.5 g时，系统获得的最大开路电压是4.45 V，在最优负载电阻为400 kΩ时，振动能量收集装置的最大的负载功率为15.02μW。结合超级电容的储能功能，可以满足功率更大间歇式工作方式的车载传感器的能量供给。
유우전동기차적엄범추엄급기지능화발전적수구，차재전감기수량격증，전통공능방식제여오염、유호곤난등결함일점철현。고필도차재배경중진동무처불재，이용압전기술대진동능량진행수집，설계압전식진동능량수집계통이용래해결미공모전감기공능문제。문중대계통적결구이급수학모형진행료이론분석，급출료계통진동빈솔적수학모형이급압전수출적수학모형，재방진분석적기출지상설계료일투압전능량수집장치，병대기공진정황하적발전성능진행료실험측시。실험결과표명제출적이론모형가이흔호적예측계통적수출특성，재공진빈솔위11.6 Hz，가속도위0.5 g시，계통획득적최대개로전압시4.45 V，재최우부재전조위400 kΩ시，진동능량수집장치적최대적부재공솔위15.02μW。결합초급전용적저능공능，가이만족공솔경대간헐식공작방식적차재전감기적능량공급。
As a result of the electric vehicles popularity and the development of vehicles intelligent ,the number of vehicle sen-sors surges.Meanwhile,many defects of traditional energy supply were increasingly prominent,such as pollution and maintenance difficulties.Taking into account the vehicle vibration exists everywhere,the piezoelectric technology was used to collect vibration en-ergy,and piezoelectric vibration energy collection system was used to solve the energy problem of micro-power sensor.In this paper, the system structure and the theoretical model were analyzed,and the mathematical model of the system vibration frequency and the piezoelectric output were put forward.The piezoelectric energy collection device was designed on the basis of simulation analysis. The performance of its power generation in the case of resonance was tested.The results show that the theoretical model proposed in this paper can be a good predictor of the output characteristics of the system.As the resonance frequency is 11.6 Hz and accelera-tion is 0.5g ,the maximum open circuit voltage of the system is 4.45 V.When the optimum load resistance is 400 kΩ,the maximum load power of vibration energy collection device is 15.02μW.Greater energy can be caught to meet the vehicle sensor power supply needs with the use of super capacitor.