▎ 摘　　要

NOVELTY - The sensor has a flexible sensor main body (1), a metal electrode (2) and a lead (3). The flexible sensor main body is provided with a snake-shaped structure that is provided with multiple large S-shaped structures. Each big S-shaped structure is connected by several small S-shaped structure. Two ends of the flexible sensor main body are sequentially connected with the metal electrode and the lead. The flexible sensor main body is a substrate layer, an electrode layer and a packaging layer from inside to outside sequentially. The sensor substrate layer is a thermoplastic polyurethane (TPU) used by a 3D printer or a polyvinylidene fluoride (PVDF), a silicon rubber, an Ecoflex or a polydimethylsiloxane (PDMS) used by a microelectronic printer. The electrode layer is made of carbon nanotube, conductive silver paste, silver nano-wire, gold nano-wire, carbon black or graphene. USE - Multi-snake resistance type flexible sensor based on 3D printing for measuring tensile strain by multiple mechanical deformation. ADVANTAGE - The multi-snake resistance type flexible sensor has high sensitivity, strong tensile property, can be installed on the joint or skin, small constraint of deformation, through the change of the resistance value, directly reflect the size of the tension, and has good wear resistance, repeatability and corrosion resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of multiple snake resistance type flexible sensor based on 3D printing. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of a multi-snake resistance type flexible sensor based on 3D printing. 1Flexible sensor main body 2Metal electrode 3Lead