中图分类号： TN98
文献标识码： A
DOI：10.16157/j.issn.0258-7998.200149
中文引用格式： 何维，胡安琪，田增山，等. 基于家庭WiFi的室内漏水检测[J].电子技术应用，2020，46(9)：69-73.
英文引用格式： He Wei，Hu Anqi，Tian Zengshan，et al. Indoor water leakage detection based on home WiFi[J]. Application of Electronic Technique，2020，46(9)：69-73.

Indoor water leakage detection based on home WiFi

Abstract： With the improvement of wireless sensing systems and wireless network technologies, human-computer interaction, behavior recognition, and non-contact sensing detection based wireless signals has received increasing attention in wireless sensing. Aiming at the condition that water leakage accidents in home environment, this paper proposes a system for detecting water leakage in real time based commercial WiFi signals. It mainly uses the channel state information in commercial WiFi signals, captures signal changes caused by different characteristics of objects by receiving signals, and completes the three-step processing: data preprocessing, feature extraction, and machine learning classification to achieve the goal of real-time detection of leaks，and innovate the traditional leak detection system. In order to prove that the proposed system′s classification model is suitable for any ordinary home environment, this paper executes the test in real environment at the end, and the outputted results verify the feasibility of the system.

Key words : CSI；liquid detection；WiFi；SVM