The invention discloses a
pulse monitoring sensor, a preparation method and a
pulse monitoring device and
system. The
pulse monitoring sensor comprises a friction
electricity generation part, a firstencapsulation layer and a second encapsulation layer, wherein the first and second encapsulation
layers are used for encapsulating the friction
electricity generation part. The friction
electricity generation part comprises a first friction
assembly and a second friction
assembly which are stacked in sequence, the first friction
assembly comprises a first
electrode layer and a first high-molecularpolymer insulating layer which are stacked, and the second friction assembly comprises a second
electrode layer. The first encapsulation layer is arranged on the surface of the portion, away from thefirst high-molecular
polymer insulating layer, of the first
electrode layer; the second encapsulation layer is arranged on the portion, away from the first friction assembly, of the second electrodelayer and the lateral surface of the friction
electricity generation part; a concave-convex array structure is arranged on the surface, making contact with the
skin of a user, of the second encapsulation layer. By means of the technical scheme, the sensitivity of the pulse monitoring sensor is improved, the pulse beat of the user can be accurately monitored, the structure and the
manufacturing technology are simple, and the cost is low.