▎ 摘　　要

NOVELTY - Three-dimensional pressure sensor comprises a bottom layer (1) and a top layer arranged in parallel above the bottom layer. The top layer is sequentially connected with a trigger and a positive graphene. The bottom layer is connected with the flexible supporting unit whose height is lower than the top layer. A middle unit of the flexible support unit is opened with a mounting groove (501). The forward graphene detector is located in the mounting groove, and there are at least four circumferential graphene detectors connected between the positive-direction graphene detector and the flexible supports. A guide connecting piece for moving the top and bottom layer in the plane perpendicular to the flexible supported unit is connected between top and flexible support. A graphene detector (6) is equal to the bending radius of the outer wall of a trigger column (4). A second guide column (8) is pushed to the second guide hole through a movable groove (502). USE - Used as three-dimensional pressure sensor for transistor type sensor of shear force of X and Y direction. Uses include but are not limited to a transistor type sensor, capacitive sensor, piezoelectric sensor and a piezoresistive sensor. ADVANTAGE - The action force is transmitted to the forward graphene detector and the circumferential detector graphene the trigger when the top layer is subjected to external force, so as to make more accurate detection to the three-dimensional force. The structure is simple and convenient to install, by setting the movable groove, and can conveniently finish the installation of the second guide column. The detection pressure is more accurate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a preparation method of three-dimensional pressure sensor. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the three-dimensional pressure sensor. 1Bottom layer 4Trigger column 6Graphene detector 8Second guide column 501Mounting groove 502Movable groove