Novel optical fiber tactile array sensor and manufacturing method

Abstract

The invention discloses a novel optical fiber touch sensor array and a manufacturing method of the sensor array. The sensor array comprises a thin film, an array body composed of a plurality of row sensors is arranged on the thin film, and each row sensor comprises n elastic devices arranged in a row and an optical fiber grating sensor penetrating through the elastic devices. The manufacturing process of the optical fiber touch sensor array includes the following steps that first, a transverse series-connection model mold is manufactured; second, row optical touch sensors are manufactured; third, the obtained row optical fiber touch sensors are pasted to the thin film to form the array. When an outside object touches the optical fiber touch sensor array, pressure will be inflicted onto a certain sensor of the optical fiber touch sensor array. Because the material of a substrate of the stressed sensor has good extensibility, the stressed sensor will extend when suffering the inflicted force, an optical fiber grating embedded into the substrate will extend along with extending of the substrate, the grating period of the optical fiber grating will change, and thus the central wavelength of the Bragg grating will correspondingly change.

Description

technical field [0001] The invention specifically relates to a novel optical fiber tactile array sensor and a manufacturing method. Background technique [0002] At present, robotic systems have been applied to many fields, such as industry, military, aerospace and so on. Among them, object processing and control are the main tasks in various fields where robotic systems are applied. Effective processing and manipulation of an object not only requires the robot's skill and ability in action, but also depends on the feedback information from the controlled and processed object and the recognition of the object's attributes. In particular, when the video equipment cannot be used and the preset environmental conditions cannot provide sufficient information for the intelligent robot action, the tactile sensor is also required to provide the required information feedback for the intelligent robot system. Therefore, tactile sensing information is very important for the robot sys...

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Problems solved by technology

However, due to the unreliable contact between the brittle sensing element and the rigid substrate, the non-sensitive area left after the fiber grating forms a sensitive unit is relatively large, resulting in a decrease in sensitivity, etc. At present, there is no relatively mature fiber grating technology in China. tactile sensor

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