一种低功耗有源RFID标签的设计

Design of the Active Tag with Low Power Consumption

有源RFID寿命的长短很大一部分取决于电池的供电时间。降低有源RFID标签的功耗是延长其寿命的方法之一。本文提出了一种低功耗的有源RFID标签的设计,可有效降低有源RFID标签的功耗,延长其使用寿命。该标签分为三个部分,分别是以单片机STM8L101作为核心的控制模块,以nRF24L01芯片为主的射频模块及电源模块。本文主要从两个方面降低有源RFID标签的功耗。一是通过编程使核心控制模块和射频模块进入定时休眠状态,二是采用MAX4625模拟开关控制外部传感器的电源。结果表明,该设计能够有效的降低有源RFID标签的功耗。

The length of the active RFID life largely depends on the battery’s power supply time.Reducing the power consumption of active RFID tags is one of the ways to extend the life span.This paper presents a low power consumption RFID tag design,it can effectively reduce the power consumption of active RFID tag,and prolong its service life.The RFID tag consists of three modules:control module with STM8L101 as the core,radio frequency module based on nRF24L01 chip and power management module.This paper mainly reduces the power consumption of the active RFID tags from two aspects.First,the core control module and radio frequency module are programmed to enter a time resting state.The second is to use the MAX4625 analog switch to control the external sensor’s power supply.It is shown that this method is effective to reduce the power consumption of the active RFID tags.