Multifunctional full-flexible fingerprint-like tactile sensor

Abstract

The invention discloses a multifunctional full-flexible fingerprint-like tactile sensor comprising a flexible substrate, a hardened substrate, a stretchable electrode, a temperature measuring unit, amaterial identification unit, a pressure measuring unit, and a beam-like boss array that are laminated from bottom to top. The temperature measuring unit, the material identification unit, and the pressure measuring unit are formed by a plurality of groups of concentric arc line structures and a patterned thermosensitive resistor, an arc-shaped finger capacitor and an arc-shaped pressure-sensitivestrain gauge, thereby forming a human-fingerprint-simulation-based multifunctional tactile sensor capable of realizing temperature measurement, object material identification and pressure measurement. According to the invention, on the basis of the regionalized structure design, the sensor has multiple measurement functions in a small deployment range; since all layers of structures are made of flexible composite materials using silicone rubber as matrixes, the flexibility of the sensor is improved obviously; and the fingerprint-like design is realized in terms of structural features and function.

Description

technical field [0001] The invention relates to a flexible tactile sensor, in particular to a multifunctional fully flexible fingerprint-like tactile sensor. [0002] technical background [0003] Flexible electronic devices have broad application prospects in artificial limbs, intelligent robots, and wearable devices. Among them, flexible tactile sensors have become a research hotspot in the field of intelligent robots. The tactile sensor can detect the tactile information during the operation of the robot object, and feed it back to the motion control system, so that the robot's control can be changed from one-way, open-loop to two-way, closed-loop, and improve the robot's complex and fine work ability in an unstructured environment . This makes tactile sensors widely used in space robots, deep sea exploration robots, intelligent medical robots and other directions. [0004] Fingers of the human hand are the most important part of the human body to perceive tactile infor...

AI Technical Summary

Problems solved by technology

However, most of the existing tactile sensors only have a single information detection function, such as detecting pressure, temperature, etc.

A small number of sensors with multiple detection functions are difficult to be practically used for tactile detection in the process of intelligent robot object grasping due to the large detection area

At the same time, the use of traditional metal electrodes also greatly limits the flexibility of the tactile sensor, reduces the integration of the sensor with the robot, and negatively affects the accuracy of tactile detection during the grasping process.

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