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Low-Complexity Ultra-wideband (UWB) Sensor for Wireless Detection and Monitoring of Human Body Movements

详细技术说明

We have developed a wireless sensor scheme based on the Ultra-wideband (UWB) technology that offers a highly accurate mechanism for the detection and measurement of the human body movements. The sensor is able to provide accuracy in the range of millimeters, which makes it particularly suitable for detecting small movements of the human body, such as the respiratory chest movements. UWB signals provide features such as low energy consumption, low electromagnetic radiation, low interference, and the ability to penetrate obstacles, including concrete.

*Abstract

Our choice of UWB technology enables sensing through obstacles using pulses which consume low power and emit low electromagnetic radiations. Our novel subsampling scheme enables us to overcome the Nyquist sampling constraint, allowing to achieve millimeter range accuracy using UWB signals while sampling much below the Nyquist rate. For example, 80GHz sampling frequency is required for a 2mm accuracy using traditional methods. With our sensor the same accuracy can be achieved using only 2.1GHz! The reduction in hardware complexity leads to significant cost savings and possibility of developing a portable and low-cost commercial device.

国家/地区

美国