一体式无线无源振动传感器设计

现阶段无线传感器的供电主要依靠的依然是一次电池或可充电电池,无论哪种电池,其寿命都是有限且短暂的,大量的更换及废弃势必会对生态环境造成极大的污染。由此提出一种基于振动能量采集的自供电传感器,基于电磁感应对振动能量进行采集利用;低功耗单片机利用所收集的能量对发电单元所产生的信号进行采集,作为振动传感信号。实验结果证明,该无源传感器可在2 Hz^200 Hz的振动环境下稳定的工作,所采集的信号同样与实际振动环境一致。

A Design of Integrated Self-Power Wireless Vibration Sensor

Nowadays,the power supply of wireless sensors mainly relies on one-time batteries or rechargeable batteries.Each kind of battery always has low endurance and short-lived.A large number of replacements or disposals will inevitably cause great pollution to the environment.Therefore,a self-powered sensor based on vibration energy harvesting is proposed.The electromagnetic induction is utilized to harvest energy,after that the vibration signal is collected by the low-power microcomputer using the energy from the power generation unit.The experimental results show that the proposed self-powered sensor can work stably in the vibration environment of 2 Hz^200 Hz,and the collected signals are also consistent with the actual vibration.