Flexible sensing array with isotropy
A sensor array, isotropic technology, applied in the field of sensors, can solve the problem of insufficient measurement range of strain sensors
Active Publication Date: 2022-06-28
NAT UNIV OF DEFENSE TECH
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[0005]
In view of the above technical problems, the present invention provides an isotropic flexible sensor array that can solve the problem of insufficient measurement range of strain sensors in the prior art and can only realize the measurement of a single physical quantity
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[0028] In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.
[0029] In one embodiment, as figure 1 As shown, an isotropic flexible sensing array includes a flexible substrate, a plurality of pressure sensing units and a plurality of strain sensing units, and the strain sensing unit includes a basic sensing unit capable of exhibiting isotropy in the range of 30° The basic sensing unit is symmetrically arranged to form a symmetrical sensing unit, and it is arranged on the edge of the cell structure showing six-fold symmetry, and the cell structure is circularly arrayed to form each cell in the range of 360°. For the isotropic sensing array, the sensing array node is integrated into a pressure sensing unit. The pressure sensing unit is a regular hexagon and is connected to the surrounding strain sensing units throug...
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The invention discloses a flexible sensing array with isotropy, which comprises a flexible substrate, a plurality of pressure sensing units and a plurality of strain sensing units, and is characterized in that each strain sensing unit comprises a basic sensing unit capable of showing isotropy in a 30-degree range, the basic sensing units are symmetrically arranged to form a symmetrical sensing unit, and the symmetrical sensing units are arranged on the flexible substrate. Strain sensing units are arranged on side lines of a cellular structure showing sextuple symmetry, the cellular structure is subjected to circumferential array to form an isotropic sensing array within the range of 360 degrees, pressure sensing units are integrated at nodes of the sensing array, and the pressure sensing units are in a regular hexagon shape and are connected with the strain sensing units on the periphery through conductive circuits. Six metal electrodes are led out from the six outermost pressure sensing units through liquid metal, and the pressure sensing units and the strain sensing units are arranged on the flexible substrate and are packaged with the same material as the flexible substrate. The problems that in the prior art, a sensor is insufficient in measuring range and only can measure a single physical quantity are solved.
Description
technical field [0001] The invention belongs to the field of sensors, in particular to an isotropic flexible sensor array. Background technique [0002] Sensing technology is the basis of engineering control, so the monitoring and control technology with sensors as the core is widely used in the engineering field. Among them, the widely used strain sensor is a kind of sensor device that can change a certain physical parameter of itself according to the size of the external strain according to different physical and chemical effects. According to the different sensitive principles of the sensor, it can be divided into resistive, capacitive and piezoelectric types, and the most common in design and use is the resistive strain sensor. When it changes, its resistance value will also change accordingly. However, with the advancement of science and technology and the development of smart materials, flexible structures are gradually entering people's lives, and the traditional ri...
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IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 李川成刘冠军邱静郭斯琳杨鹏刘瑛张勇吕克洪郑贤德程先哲吴林筱
Owner NAT UNIV OF DEFENSE TECH