← 返回 JSSC 论文列表JSSC 2019第12期Other
A Sense Phase As previously discussed in Section II-A a PEHs open- circuit volta
该论文提出了一种通过测量电流来恢复PEH最大功率点电压的方法。
未明确提及
PEHVMPP电流测量放大电路电感基放大
▸创新点1:提出了一种基于电流测量的VMPP恢复方法,通过测量压电能量收集器(PEH)的电流IP,结合RP和CP的固定参数,推导出VMPP,避免了传统方法中复杂的电压测量(方法创新)
▸创新点2:设计了精密的放大和偏移消除电路,能够处理亚毫伏级别的电压变化信号,解决了微小信号检测的难题,同时优化了功耗(电路创新)
▸创新点3:采用电感基放大技术,将CP上的能量差转移到更小的电容器上,生成更高的电压(数十毫伏),显著提高了信号的可检测性(电路创新)
▸创新点4:使用串并联开关电容阵列进一步将电压提升至数百毫伏,增强了系统的信号处理能力,为后续电路提供了更稳定的输入(系统创新)
Abstract
ence
comes from the current that flows through CP , and, hence,
we can recover VMPP by taking this current into account.
Assuming the PEH is left in the open-circuit state, then
IP = IR + IC (11)
where IR and IC are the current flowing through RP and CP ,
respectively. IR can be derived by VP /RP ,i nw h i c hRP is an
unknown but fixed value for a given PEH. To measure IC ,w e
can wait for a short-time period /Delta1t and measure the voltage
accumulation /Delta1V on a capacitor CP . IC is approxima