The mains-powered Bluetooth sleep monitor uses imported PVDF sensors. Based on the BCG monitoring principle, it monitors vibration signals caused by body movements, chest expansion and contraction, and heart pumping. The sensors convert these signals into electrical signals, which are then processed through amplification, filtering, and algorithmic analysis to detect heart rate, breathing, body movement, snoring, and other data. The device connects to a gateway or mobile phone via Bluetooth communication, and uploads the data to the user’s phone or server.