Passive Respiration Detection via mmWave Communication Signal under Interference

Recent research has highlighted the detection of human respiration rate using commodity WiFi devices. N everthe-less, these devices encounter challenges in accurately discerning human respiration amidst the prevailing human motion interference encountered in daily life. To tackle this predicament, this paper introduces a passive sensing and communication system designed specifically for respiration detection in the presence of robust human motion interference. Operating within the 60.48 GHz millimeter wave (mmWave) band, the proposed system aims to detect human respiration even when confronted with substantial human motion interference within close proximity. Subsequently, a neural network is trained using the collected data by us to enable human respiration detection. The experimental results demonstrate a consistently high accuracy rate over 95 % of the human respiration detection under interference, given an adequate sensing duration. Finally, the accuracy of the proposed passive detecion system of counting human respiration achieves 90% overall.