功能材料
功能材料
공능재료
JOURNAL OF FUNCTIONAL MATERIALS
2014年
13期
13076-13078
,共3页
声能量%压电换能器%能量收集
聲能量%壓電換能器%能量收集
성능량%압전환능기%능량수집
sound energy%piezoelectric converter%energy harvest
对圆盘式压电能量收集器在声场作用下的电能输出效果进行了研究.将处于夹持状态的压电陶瓷片,放置在单频稳态的正弦波形声场中,由于激振作用,压电陶瓷片会产生形变.实验结果表明,在器件处于谐振状态时输出电压和功率会达到最大值.在正弦声场中,当声波频率达到907 Hz的谐振频率时压电陶瓷片的开路输出电压可以达到4.6 V;在110 dB 的声场中,当负载电阻达到11.2 kΩ时,输出功率最大可达60.4μW.
對圓盤式壓電能量收集器在聲場作用下的電能輸齣效果進行瞭研究.將處于夾持狀態的壓電陶瓷片,放置在單頻穩態的正絃波形聲場中,由于激振作用,壓電陶瓷片會產生形變.實驗結果錶明,在器件處于諧振狀態時輸齣電壓和功率會達到最大值.在正絃聲場中,噹聲波頻率達到907 Hz的諧振頻率時壓電陶瓷片的開路輸齣電壓可以達到4.6 V;在110 dB 的聲場中,噹負載電阻達到11.2 kΩ時,輸齣功率最大可達60.4μW.
대원반식압전능량수집기재성장작용하적전능수출효과진행료연구.장처우협지상태적압전도자편,방치재단빈은태적정현파형성장중,유우격진작용,압전도자편회산생형변.실험결과표명,재기건처우해진상태시수출전압화공솔회체도최대치.재정현성장중,당성파빈솔체도907 Hz적해진빈솔시압전도자편적개로수출전압가이체도4.6 V;재110 dB 적성장중,당부재전조체도11.2 kΩ시,수출공솔최대가체60.4μW.
The effect of power output of the PZT-metal composite disc bender was studied in this article,when the disc was under the effect of sound field.The piezoelectric ceramic in a clamping state was placed in the sound field which was single-frequency steady-state sine wave.Under the excitation,the piezoelectric ceramic was de-formed.The results show that the output voltage and power of the device were maximum at the resonance fre-quency.In the sinusoidal sound field,the output voltage of the piezoelectric disc bender was up to 4.62 V in open circuit when the acoustic frequency was 907 Hz.Under a sound pressure of 110 dB,the power of 60.4μW was obtained across a resistance load of 1 1 .2 kΩ.