基于解码芯片的无线能源唤醒模块设计

Design of wireless energy wake-up module based on decoder chip

无线传感器功耗较大并且对电源电压的要求比较严格,使用自带的小尺寸电池该传感器工作时间短并且存在由于电源电压不稳而造成损坏的几率。针对上述问题,设计了一种低功耗无线能源唤醒模块,在需要工作时可开启电源,向传感器稳定供电;否则将关闭电源。实验结果表明,采用无线能源唤醒技术能够在使用小尺寸电池的条件下大大延长传感器系统的工作时间,并且为无线传感器提供稳定的能源供给增强其实用性。对于一种用于桥梁安全检测的无线传感器网络,加装本模块后,使其工作时间由原先的几十个小时延长至一年并且降低了该无线传感器由于电源不稳而造成损坏的几率。

Wireless sensor has larger power consumption and voltage is more stringent to it.This wireless sensor has some problems that the working time is short and it may be damaged due to the instability of the supply voltage when a portable small battery is used.Wireless energy wake-up module of low power consumption is designed to solve these problems.This module turns on and supplies the sensor with stable power if needed,otherwise turns it off.The experimental results show that,when a portable small battery is used,the life of the wireless sensor system is greatly extended,it is provided with a stable energy supply and its usability is enhanced.After the installation of the module to a wireless sensor network for safety detection of a bridge,its operation life which is dozens of hours in original time is extended to one year and the possibility of damage is reduced due to the instability of the supply voltage.