Large-area flexible electronic skin slip sensor based on DUS-FBG

Abstract

The invention discloses a large-area flexible electronic skin slip sensor based on DUS-FBG, and relates to the technical field of flexible electronics. The large-area flexible electronic skin slip sensor comprises an optical fiber flexible skin structure which is formed by packaging a slip sensing array through a flexible packaging material, wherein the slip sense sensing array is formed by grid arrangement and distribution of first DUS-FBGs which are transversely arranged and second DUS-FBGs which are longitudinally arranged, the first DUS-FBGs and the second DUS-FBGs are two grating optical fibers with different central wavelengths, and the array arrangement is that DUS-FBGs with a preset length are arranged at intervals of a preset distance; a tunable laser module used for providing an incident light source for the slip sense sensing array; and a slip sensation sensing module which is used for determining slip sensation generation and ending positions and moments according to the central wavelength shift of the two DUS-FBGs of the slip sensation sensing array and a threshold value so as to realize slip sensation measurement. The two fiber bragg gratings with different central wavelengths are used, so that the sensitivity is improved, and large-area flexible electronic skin slip sensor has the advantages of high sensitivity and large-area measurement.

Description

technical field [0001] The invention belongs to the technical field of flexible electronics, and in particular relates to a large-area flexible electronic skin slip sensor based on DUS-FBG. Background technique [0002] With the rapid development of intelligent robots, there are high requirements for their sensitivity, and the measurement and feedback of sliding sense play an important role in the intelligentization of robots. [0003] Slip sensor is a device that can detect the relative sliding between the gripper of the manipulator and the clamped object, mainly including capacitive, piezoresistive, magnetic sensitive, optical fiber and piezoelectric. Resistive sliding tactile sensors have the disadvantages of large size, difficulty in integration, and unstable leakage current of force-sensitive resistors; photoelectric sliding sensors have the advantages of simple structure, reasonable design, and strong anti-electromagnetic interference ability, etc. When more than two ...

AI Technical Summary

Problems solved by technology

Resistive sliding tactile sensors have the disadvantages of large size, difficulty in integration, and unstable leakage current of force-sensitive resistors; photoelectric sliding sensors have the advantages of simple structure, reasonable design, and strong anti-electromagnetic interference ability, etc. When more than two directions of force act together, it is difficult to maintain a linear relationship, and it is difficult to calibrate, and its accuracy is difficult to improve; the most widely used sliding tactile sensor is a piezoelectric sensor, which can simultaneously detect sliding Information and tactile information, however, it is difficult to separate the sliding information from the tactile information, and the piezoelectric sliding tactile sensor has both piezoelectric response and pyroelectric response; and it is difficult to realize the demand for large area and high precision.

Images