Based on the distribution of the flexible capacitive touch sensor array helix

The present invention discloses a flexible tactile sensing array of distributed capacitance based helix. Consists of the same M rows × N columns of tactile sensing unit structure, M and N are ≧ 2, each tactile sensing unit sequentially from the bottom by the lower layer, the upper layer and the surface of the spiral protrusions are bonded together; upper, the lower layer by two spiral wound parallel to the surface of the copper wire spiral PDMS concatenation, the upper layer, the lower wire helix PDMS layer was disposed to form four orthogonal crossing region, i.e., four capacitor plates formed regions; convex surface shape of quadrangular pyramid. Selecting discrete tactile sensor unit, each haptic sensing unit is connected to a flexible PDMS are arranged in a mesh array structure can greatly improve the flexibility and ductility of the tactile sensing array; intersection copper helix region forming a capacitor, four capacitors corresponding to a projection surface, tactile sensing array having a capacity of three-dimensional design of the force detector enables such.