Traditional floor plan construction suffers problems of high trajectory energy con sumption and large cumulative error.Therefore,this paper proposed a new construction method without using sensors but useing Wi-Fi signal to sense the movement of people to construct an ac cessible path structure so as to draw the final indoor plan.The experimental results show that the method of using CSI to detect the path structure in indoor environment is more accurate and low cost,and the precision of the constructed floorplan achieves an average of 87％,and the structure of floorplan is complete enough to be suitable for indoor location service.%针对传统的平面图自动构建技术存在轨迹测量能耗高、累计误差大的问题.笔者不使用传感器,而是利用Wi-Fi信号来感测人的移动,从而构建出可通行路径结构,绘制室内平面图.实验结果表明,在室内环境下使用CSI检测路径结构的方法更加准确、低耗,构建的平面图精度平均达到87％,且结构完整,适用于室内位置服务.
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