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A smart skin based on a small-scale distributed optical fiber sensing array

A technology of distributed optical fiber and sensing array, which is applied in the direction of using optical devices to transmit sensing components, convert sensor output, instruments, etc., to achieve the effect of overcoming limitations

Active Publication Date: 2022-05-27
SHANDONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] There is still a certain gap between current sensors and smart sensors for simultaneous multi-point, multi-parameter and multi-dimensional state measurement, and more sensitive point integrated sensing elements and manufacturing technologies are needed to achieve perfect and accurate reflection of material changes The demand for regular information collection makes the sensor develop in the direction of distributed networked intelligent sensing in the future, which is also an urgent problem to be solved in the development of intelligent sensor technology.

Method used

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  • A smart skin based on a small-scale distributed optical fiber sensing array
  • A smart skin based on a small-scale distributed optical fiber sensing array
  • A smart skin based on a small-scale distributed optical fiber sensing array

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Embodiment 1

[0026] An intelligent skin based on a small-size distributed optical fiber sensing array proposed by the present invention includes an epidermal sensing array, an embedded optical fiber sensing array, a data acquisition system module, and a data processing pattern recognition module. The so-called small size is proposed for the current distributed optical fiber sensing mainly used for sensing along several kilometers or even tens of kilometers. It refers to any small range, which can be understood as the range of square centimeters or less.

[0027] like figure 1 As shown in the figure, the body of the smart skin is made of a flexible material. All-fiber interferometric sensors are embedded in the flexible material to form a distributed optical fiber sensing array. The surface of the flexible material is covered with exposed sensors, which are embedded in the epidermis by a V-shaped groove. The flexible material is initially in a liquid state, which can be poured as needed, po...

Embodiment 2

[0031] In order to help understand the present invention and at the same time visually demonstrate the effect of the present invention on intelligent recognition, the following description is based on an example. First, the data set is processed, and Matlab is used to process the data accordingly. The data processing process includes: data smoothing, data normalization, peak-to-peak extraction, calculation of median, variance, mean, calculation of short-term zero-crossing rate, and calculate the wavelet packet energy.

[0032] Among them, data smoothing: use the smooth function, including moving, lowess, loess, sgolay, rlowess, lowess and other methods can be used, including different degrees of smoothing coefficient optional, mainly to remove data burr interference; data normalization : Use the built-in normalize function to unify the data into a consistent range; peak-to-peak value extraction: Use the built-in findpeaks function to extract the valley value, then flip the dat...

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Abstract

The invention discloses an intelligent skin based on a small-sized distributed optical fiber sensing array, and specifically relates to the field of intelligent optical fiber sensing, including a skin sensing array, an embedded optical fiber sensing array, a data acquisition system module, and data processing mode recognition module. The body of the smart skin is a flexible material; the epidermis and the embedded optical fiber sensing array are multiple all-fiber interferometric sensor arrays; the data acquisition system module includes a broadband light source, a photosynthesis / splitter, an optical path switch, a signal detector and a computer; The processing pattern recognition module includes neural network pattern recognition and training; the smart skin also includes peripheral display software for realizing intelligent sensing recognition of touch, position, shape, and object composition, temperature, vibration, etc. The invention plays an important role in the fields of intelligent robots, industrial control facilities, intelligent buildings, medical equipment, Internet of Things, inspection and detection, military affairs, aerospace and the like.

Description

technical field [0001] The invention belongs to the field of intelligent optical fiber sensing, in particular to an intelligent skin based on a small-sized distributed optical fiber sensing array. Background technique [0002] Sensors are the core components of intelligent systems and the Internet of Things, and are the key to all data acquisition and intelligent sensing implementation. With the development of various intelligent systems and technologies, their importance has become increasingly prominent. From the current point of view, my country's sensor production level is five to ten years behind developed countries, the accuracy of scientific testing instruments is 0.5-1 orders of magnitude lower than that of similar products at home and abroad, and the technical level reached by intelligent sensors is not mature. Therefore, it is of great strategic significance to carry out research on new sensors, sensor arrays and improve existing sensor technology for the developme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/353
CPCG01D5/35306G01D5/35374G01D5/35303G01D5/35341
Inventor 李丽君徐天纵马茜张兆川刘晓蕾申佳君
Owner SHANDONG UNIV OF SCI & TECH
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