NON-CONTACT HEARTBEAT SENSOR AND HEARTBEAT SIGNAL PROCESSING METHOD USING THE SAME

摘要

PURPOSE: A heartbeat measuring sensor and a signal processing method thereof are provided to measure a high quality heart beating signal by preventing interference from adjacent noise. CONSTITUTION: An electrode part(100) charges electrical capacity due to a heartbeat. A LC oscillator(110) oscillates a bio-signal due to the heartbeat. An inverter(120) converts a frequency signal, which is outputted from the LC oscillator, to a square wave signal. A phase synchronization circuit(130) synchronizes the phase of the bio-signal that is outputted from the inverter. A buffer(140) buffers the bio-signal that is outputted from the phase synchronization circuit. A RC lowpass filter filters the bio-signal that is outputted from the buffer. An amplifier amplifies the bio-signal that is filtered from the RC lowpass filter.