振动发电式矿用无线温度传感节点设计

Design of vibrating-powered wireless temperature sensing node for mine

根据矿井下有强大机械振动源和不方便更换电源线路的特殊环境条件,设计了一个可长期服役的自供电矿下温度采集终端节点。发电部分采用磁电加压电双模式共同采集能量的方式实现自供电能,并由锂电池补充;芯片LTC3331实现能源管理给整个系统供电,以CC2530的8051内核为控制中心,控制温度传感器DS18B20进行终端数据采集以及MAX17043进行电量检测,然后通过CC2530射频模块将数据发送给上位界面。最后通过实验证明设计结构发电有效并且采集数据真实反映环境温度。该设计提高了系统监测的寿命与准确度,能够有效地预防故障的发生。

According to the special environmental condition in underground mine, which is of strong mechanical vibration sources and inconvenient replacement of power supply line, we designed a self - powered underground temperature acquisition terminal node with long service life. Self - powering is realized with magnetoelectric dual - mode power to collect energy, which is supplemented by lithium battery; chip LTC3331 is used for energy management to power the entire system; core 8051 of CC2530 is control center, to control the temperature sensor DS18B20 for terminal data acquisition and MAX17043 for power detection; and finally, the data is sent to the host interface through CC2530 RF module. According to the experimental results, the designed structure is effective and the collected data truly reflect the ambient temperature, which improves the life and accuracy of the monitoring system, and effectively prevents the occurrence of failures.