Flexible tactile sensor
A tactile sensor, flexible technology, applied in the field of sensors, to achieve the effect of low power consumption, high sensitivity and strong adaptability
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no. 1 example
[0029] figure 1 A schematic structural view of the flexible tactile sensor according to the first embodiment of the present invention is shown. Such as figure 1 As shown, the flexible tactile sensor has five highly stretchable flexible textile material layers 1-5, wherein the first and fifth layers are non-conductive protective layers 30, and the second and fourth layers are conductive fabric layers 21A , the third layer is piezoresistive fabric layer 10. Two conductive fabric layers 21A are symmetrically disposed on both sides of the piezoresistive fabric layer 10 to sandwich the piezoresistive fabric layer 10 between the two conductive fabric layers 21A. The areas of the two conductive fabric layers 21A are slightly smaller than the area of the piezoresistive fabric layer 10, so as to avoid short circuit caused by the contact of the two conductive fabric layers 21A. The two non-conductive protective layers 30 are respectively symmetrically arranged on the side of the tw...
no. 2 example
[0038] Such as image 3 As shown, the structure of the flexible tactile sensor of this embodiment is similar to the structure of the flexible tactile sensor of the first embodiment, the difference is that the conductive fabric layer 21B of the second layer and the fourth layer of the flexible tactile sensor of this embodiment Both are made of conductive braided wire. The arrangement pattern of the conductive braided wires in the conductive fabric layer is orthogonal to each other to ensure a higher number of overlapping points, resulting in higher conductivity. The conductive braided wire used in this embodiment is twisted yarn with high toughness, and the resistivity is less than 500 ohms per meter.
[0039] In this embodiment, the flexible tactile sensor uses a single piezoresistive fabric layer and a double-layer conductive braided wire, so it can be referred to as a "single pressure double wire" flexible tactile sensor according to its layered structure.
no. 3 example
[0041] Such as Figure 4 As shown, the structure of the flexible tactile sensor of this embodiment is similar to the structure of the flexible tactile sensor of the first embodiment, the difference is that the flexible tactile sensor of this embodiment includes two piezoresistive fabric layers 10, namely the third layer and layer 4. The increase of the piezoresistive fabric layer can increase the sensitivity of the sensor, therefore, even if a small external force is applied, the deformation of the double-layer piezoresistive fabric layer will cause a sharp drop in resistance, resulting in a large change in the potential difference of the conductive layer. Those skilled in the art can understand that more than two piezoresistive fabric layers can also be provided according to the needs of practical applications. Each additional layer of piezoresistive fabric increases the thickness of the sensor by approximately 200 to 300 microns.
[0042] In this embodiment, the flexible t...
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Abstract
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