Rational design of self-powered sensors with polymer nanocomposites for human–machine interaction

Smart sensors are becoming one of the necessities for connecting and detecting surrounding stimuli with tremendous convenience, especially when exploiting a single powerful sensor with multifunctionality. To successfully accomplish the design of a self-powered sensor, serving power is becoming a critical issue because of its continuously consumed energy required by electronics. A variety of nanogenerators aiming for the rational design of self-powered system are reviewed and compared, followed by their recent advances with polymer nanocomposites for self-powered sensors. More importantly, the proposed conceptual design of a self-powered unit/device with triboelectric nanogenerator has been emphasized to eventually realize the practical activities towards multiple detections and human–machine interaction. Finally, challenges and new prospects of rational design of self-powered polymer composite sensors in achieving human–machine interaction/interface are discussed.     

一种超宽带电子战测频技术的研究

随着雷达技术的发展,宽带瞬时信号截获是信息化装备的必备功能单元.从理论和试验验证的角度详细分析了超宽带电子战接收机的工作原理、测频技术和应用场景,提出了一种简化的MonoDFT算法,实现了2GHz～18GHz频段内雷达信号辐射源的高精度频率测量,并设计了两种应用场景和实现方法.理论分析与实验表明,接收机能够实现瞬时带宽...