▎ 摘　　要

NOVELTY - The device has a flexible circuit board (1) whose middle layer is provided with a circuit connection structure. A top end of the circuit connection structure is covered by a flexible base material. A bonding pad is electrically connected with a circuit connecting structure and arranged on the flexible base material. The bonding pad is fixedly connected to the top portion of the flexible circuit board. A battery (3) is attached to an upper surface of a silica gel protective layer (2). The battery is electrically connected with the circuit connection structure in a middle portion of the flexible circuit board for supplying power to a bioelectric signal collecting and transmitting device. USE - Laser-induced graphene (LIG) electrode based flexible bioelectric signal acquisition device for use in biological sensing field. ADVANTAGE - The device integrates the electrode and the flexible circuit board by laser engraving to reduce equipment redundancy and simplify the use of equipment, so that does not require plugging or sticking electrode pads. The device directly attaches entire flexible circuit board to the biological surface to realize the collection and transmission of biological electrical signals, which is portable and has better fit to the biological surface. The device has flat structure, and adjusts the electrode structure according to the curvature of the body, so that the feeling of use is far superior to that of traditional electrodes. The setting mode can effectively reduce the signal interference between each unit module, and shorten the transmission distance of the electric signal in the unit module so as to obtain better signal processing. The device reduces the loss in the signal transmission process by the shortest transmission distance. The device is portable, and better the fitness of the biological surface. DESCRIPTION OF DRAWING(S) - The drawing shows an exploded perspective view of a laser-induced graphene electrode based flexible bioelectric signal acquisition device. Flexible circuit board (1) Silica gel protective layer (2) Battery (3) Processing unit (4) Signal conditioning circuit (5) Communication module (6) Interaction module (7) LIG electrode (15)