基于BQ25570的无线传感器微弱能量收集与管理  

Weak-Energy Harvesting and Management Method for Wireless Sensor Based on BQ25570

作　　者：徐涛[1] 岳松林 XU Tao;YUE Songlin(School of Automation,Shenyang Aerospace University,Shenyang 110136,China)

机构地区：[1]沈阳航空航天大学,沈阳110136

出　　处：《电子器件》2020年第2期414-420,共7页Chinese Journal of Electron Devices

摘　　要：为解决无线传感器系统的微弱能量供给问题,设计了基于BQ25570的微弱能量收集与管理方法。包括微能量升压、信息采集模块和传输模块。该系统由升压芯片BQ25570将输入端的电压升高至3.3 V存储在超级电容当中,储满后供传感器、微处理器工作,最后通过无线传输模块将数据传输至终端并在上位机显示。测试显示输入源电压为100 mV时,系统可进行以11 s为周期的信号采集传输。当输入电压超过400 mV时,可将采样频率提高到每秒一次甚至更高。In order to solve the problem of weak energy supply in wireless sensor system,a method of weak energy harvesting and management is designed,including three modules:micro-energy boost module,information acquisition and transmission module. The system uses boost chip BQ25570 to raise the input voltage to 3.3 V and stores it in the supercapacitor for sensors and microprocessors to work after full storage. Finally,the system transmits data to the terminal through wireless transmission module and displays it on the host computer. Test result indicates the system can collect signals at 11 s interval when input voltage is 100 mV. When input voltage is over 400 mV,the sampling interval can be 1 s and even less.

关 键 词：电路设计 微能量收集 升压芯片 超低功耗微处理器 能量管理 

分 类 号：TM919[电气工程—电力电子与电力传动]