典型低功耗无线智能设备的一般功耗模型

低功耗无线智能设备数量正在急剧增长,研究其功耗影响规律有助于优化设备的电源模块,还能为自供电设备提供基本的设计指导.开发了一种典型无线低功耗蓝牙设备,根据无线设备的工作特征定义了无线数据吞吐率及工作占空比两个基本参数,建立了基于上述基本参数的一般功耗模型.通过所搭建的功耗测试平台测量了上述蓝牙设备在不同工作条件下的平均功耗值,实验结果验证了理论模型.研究结果在低功耗无线设备的功耗分析和优化方面有一定的指导意义.

A General Power Consumption Model for Typical Low-Power Wireless Smart Devices

The number of low-power wireless smart devices is rapidly increasing, hence the research of their power consumption law is benefit to optimize the corresponding power modules, as well as the basic design guidance of self-powered devices. A typical low-power wireless Bluetooth device was developed in this paper, two important parameters of wireless data throughput and operation duty cycle were defined according to the characteristics of classical wireless devices. A general power consumption model based on these two parameters was then established. The average power consumption of the Bluetooth device mentioned above was measured through using the developed power measurement platform, which validated the theoretical model. Finally, this work provides a certain reference for the power analysis and the optimization of low-power wireless devices.