基于智能手机传感网的室内老年监护系统平台
发布时间：2019-01-25 20:52
【摘要】：针对老年人监护需求的日益增长,提出了一种基于手机麦克风传感网络的监护平台设计。该平台利用搭载麦克风的智能设备进行音频信号采集,以Wi-Fi作为基础网络,支撑上层MQTT物联网协议传输数据与指令,并将基于能量比的声学几何定位算法作为监控的核心功能。首先使用MATLAB仿真实验证实了定位原理的合理性和算法的可行性;然后对四部异质Android设备进行麦克风特性测试并修正算法参数;最后搭建了测试平台。实验表明此平台达到了可用的定位精度。
[Abstract]:A monitoring platform based on mobile phone microphone sensor network is proposed. The platform uses intelligent device with microphone to collect audio signal, takes Wi-Fi as the basic network, supports the upper layer MQTT Internet of things protocol to transmit data and instructions. The acoustic geometric location algorithm based on energy ratio is regarded as the core function of monitoring. The rationality of the positioning principle and the feasibility of the algorithm are verified by MATLAB simulation experiments. Then the microphone characteristics of four heterogeneous Android devices are tested and the algorithm parameters are corrected. Finally the test platform is built. Experiments show that the platform achieves the available positioning accuracy.
【作者单位】： 浙江大学电气工程学院电气自动化研究所;
【分类号】：TN92;TP274
[Abstract]:A monitoring platform based on mobile phone microphone sensor network is proposed. The platform uses intelligent device with microphone to collect audio signal, takes Wi-Fi as the basic network, supports the upper layer MQTT Internet of things protocol to transmit data and instructions. The acoustic geometric location algorithm based on energy ratio is regarded as the core function of monitoring. The rationality of the positioning principle and the feasibility of the algorithm are verified by MATLAB simulation experiments. Then the microphone characteristics of four heterogeneous Android devices are tested and the algorithm parameters are corrected. Finally the test platform is built. Experiments show that the platform achieves the available positioning accuracy.
【作者单位】： 浙江大学电气工程学院电气自动化研究所;
【分类号】：TN92;TP274
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