基于环境光能量收集的低功耗蓝牙传感器

Design of Low-power Consumption Bluetooth Sensor Based on Ambient Light Energy Harvesting

为了最大可能延长无线传感器使用寿命,无线传感器应能够从各类环境能量源中收集能量并存储,以满足自身信号采集、处理及无线数据收发等任务能量消耗的需要。考虑系统的适应性及兼容性,选取了环境光作为传感器的能量收集来源,并选择了低功耗蓝牙作为无线数据收发方案。分析了环境光的能量特性,给出了基于环境光能量收集的无线传感器节点的设计方案,讨论了传感器的休眠时间间隔,并对所设计的能量收集无线传感器的特性进行了评估。

To maximize the life of wireless sensor,it should be able to collect and store energy from various types of environ- mental energy sources to meet its own needs of energy consumption such as signal acquisition, processing and wireless data trans- ceiver. Considering the adaptability and compatibility of the system, ambient light was selected as the source of energy harvesting of the sensor and low-power consumption Bluetooth was chosen as the solution of wireless data transceiver. The energy characteristic of the ambient light was analyzed;the design of wireless sensor node based on the ambient light energy collection was given;the sleep time of the sensor was discussed and the characteristic of the designed energy harvesting wireless sensor was assessed.