Arrayed optical waveguide flexible tactile sensor, and preparation method and application thereof

Abstract

The invention discloses an arrayed optical waveguide flexible tactile sensor, and a preparation method and application thereof. The tactile sensor comprises a flexible optical waveguide tactile sensitive layer, a flexible circuit layer and a flexible substrate layer which are glued in sequence. The flexible optical waveguide tactile sensitive layer comprises a plurality of optical waveguide innercores which are distributed in an array mode and an optical waveguide wrapping layer which integrally wraps the optical waveguide inner cores. The flexible circuit layer comprises a light-emitting power supply end and an optical signal receiving and processing end, the light-emitting power supply end generates optical signals, and the optical signals are transmitted to the optical signal receivingand processing end through the optical waveguide, converted into electric signals by the optical signal receiving and processing end and sent out in a wireless signal mode. The flexible substrate layer is made of a flexible material and plays a role in protection and auxiliary fixation. The tactile sensor can be used for tactile information acquisition and processing, and has the advantages of high flexibility, high sensitivity, high spatial resolution density and the like. The sensor is simple in structure and low in power consumption, is convenient to integrate with a to-be-detected environment, and has the advantage of low data cost when the sensing area is increased.

Description

technical field [0001] The invention belongs to the technical field of flexible tactile sensors and soft robots, in particular to an arrayed optical waveguide flexible tactile sensor and its preparation method and application. Background technique [0002] Tactile sensors are usually used to collect tactile information such as force, shape, and pressure, and have a wide range of applications in robotics, wearable devices, virtual reality, intelligent prosthetics, and human-computer interaction. Traditional tactile sensors are often prepared by silicon-based semiconductor technology or MEMS (Microelectro Mechanical Systems, microelectromechanical systems) technology, mostly rigid, and are arranged in joints or other positions of interest to measure or calculate the tactile sensation during the interaction process. information. However, compared with the biological skin of the touch, the information collected in this way is often discrete and single-point, and the tactile inf...

AI Technical Summary

Problems solved by technology

The electromagnetic flexible tactile sensor solves the problem of removing the tow cable from the sensor, but at the same time introduces the need for a professional detection environment, which reduces the ease of integration and fewer application scenarios

Liquid metal can maintain followability with the soft substrate and reflect tactile information through the change of resistance value, but it has the disadvantages of high packaging difficulty and easy leakage, and the static working zero point may change continuously with deformation

At the same time, an unavoidable problem for different tactile sensors is that as the sensing area continues to increase and the number of sensitive nodes increases, the amount of data to be processed also increases geometrically, which poses a great challenge to the processing circuit. The large-scale array of sensors brings resistance

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