Silicone Bionic Fingertip Touch-Pressure Sensitive Device

Abstract

The invention discloses a silicone bionic fingertip touch-pressure sensitive device, which comprises a silicone upper base, a sensitive array mechanism, an induction electrode mechanism and a silicone lower base arranged sequentially from top to bottom; A stress-sensing protrusion, the sensitive array mechanism includes an upper sensing unit, an upper electrode array, a plurality of pressure-sensitive sheets, an insulating substrate, a lower sensing unit and a lower electrode array arranged in sequence from top to bottom, and the sensing electrode mechanism includes a top-down An upper sensing electrode, an elastic layer and a lower sensing electrode are arranged in sequence, the upper sensing electrode is coupled to the lower surface of the lower electrode array, and the lower sensing electrode is coupled to the upper surface of the silicone lower substrate. Through the bionic human fingertip structure, the present invention can not only realize small-scale tactile sensitive perception, but also realize large-scale pressure sensitive perception, which greatly improves the accuracy of bionic sensitive devices for external sensitive perception measurement.

Description

technical field [0001] The invention belongs to the technical field of bionic sensitive perception, and in particular relates to a silicone bionic fingertip touch-pressure sensitive device applicable to medical bionic robot fingers, artificial intelligence and other fields. Background technique [0002] Touch-pressure sensation refers to the sensation produced when the skin is mechanically stimulated. When an object is in contact with the skin, the sensation produced by a slight stimulus that does not cause skin deformation is called touch, and the sensation produced by causing skin deformation is called pressure. Among them, there are Michael's discs that feel slight stimulation in the epidermis, Meissner corpuscles, tactile corpuscles and Ruffini corpuscles that are responsible for tactile sensation in the dermis, and Pasini corpuscles that are responsible for pressure sensation in the subcutaneous tissue. [0003] Bionic fingertip touch-pressure sensitive devices occupy ...

AI Technical Summary

Problems solved by technology

Since the touch-pressure sensitive perception is the feeling of the bionic robot touching-pressing the target, but the materials of these sensitive devices are rigid materials with nonlinearity, the output signal is weak, and the anti-interference ability is poor, so the signal line needs to take shielding measures , can only measure the average strain at one point or within the range of the strain grating, cannot display the change of the stress gradient in the stress field, and cannot be used for measurement under high temperature conditions, etc.

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