▎ 摘　　要

NOVELTY - A double layer theory-based vital sign sensor, comprising a collector separated by preset gap and the same material and counter electrode, current collector and counter electrode chamber is formed, the current collector side is adhered with the graphite film electrode, the collector and the electrode outside is adhered with soft substrate to realize the package of the sensor, further comprising an inner chamber separated graphene film electrode and counter electrode of the insulating membrane and the ion solution filled in the chamber; the utility model sensor can the vital signs such as heartbeat, pulse jumping caused by ion solution using double layer structure of vibration and convert it into electric energy and output different voltage values under different vibration frequency, so as to be used for measurement of vital signs, which is a new monitoring technology, at the same time, the sensor is made of low cost, simple structure and convenient for large-scale production and application.