A Replaceable Flexible Sensing Device Based on Porous Structure
A porous structure and sensing device technology, applied in the field of sensing devices, can solve problems such as sensor failure, achieve the effects of reducing replacement costs, cushioning contact, and improving safety performance
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Embodiment 1
[0057] The test conditions of this 0.2N~1N reciprocating cyclic force loading test are: the tensile and compressive testing machine conducts a tensile and compressive test on the flexible porous pressure sensing unit 101 at a loading speed of 300mm / min. The pressure is 0.2N and the maximum pressure is 1N.
[0058] For the reciprocating cyclic force loading experiment of 0.2N~1N, the shape of the dumbbell body is as follows: Figure 4 The sensing and detection results of the flexible porous pressure sensing unit 101 shown in a are as follows Figure 5 As shown in a: the ratio of resistance change (the ratio of variable resistance to static resistance) is 110%; the shape of a rectangular parallelepiped is as follows Figure 4 The sensing and detection results of the flexible porous pressure sensing unit 101 shown in b are as follows Figure 5 As shown in b: the resistance change ratio (the ratio of the change resistance to the static resistance) is 70%; the shape of a triangul...
Embodiment 2
[0061] The test conditions of this static force calibration experiment are: the tension-compression testing machine conducts a static pressure test on the flexible porous pressure sensing unit 101 at a loading speed of 5mm / min, and the maximum pressure applied to the sensing unit in this test is 2N.
[0062] For the test of the static force calibration experiment, a dumbbell body shape such as Figure 4 The sensing and detection results of the flexible porous pressure sensing unit 101 shown in a are as follows Image 6 As shown in a, when the static pressure range is 0-0.3N, the sensitivity of the sensing unit is 0.90N -1 ; When the static pressure range is 0.3-1.3N, the sensitivity of the sensing unit is -0.84N -1 ; When the static pressure range is 1.3-2.0N, the sensitivity of the sensing unit is -0.10N -1 . Take the shape of a cuboid such as Figure 4 The sensing and detection results of the flexible porous pressure sensing unit 101 shown in b are as follows Image 6 A...
Embodiment 3
[0065] Sensing arrays for mechanically dexterous hand surfaces can be equipped with cuboid shapes such as Figure 4 An array of flexible porous pressure sensing units 101 shown in b. On the one hand, the contact area is relatively large to prevent the slipping and loosening of the grasped object; on the other hand, the porous pressure sensing unit in the shape of a cuboid in the sensor array is relatively sensitive, which is suitable for precision operation machines such as mechanical dexterous hands.
[0066] For the sensor array on the surface of the human-computer interaction robot, it can be equipped with a triangular prism shape such as Figure 4 An array of flexible porous pressure sensing units 101 shown in c. On the one hand, the surface area of the robot is large, and the use of smaller units can effectively save materials; second, the porous pressure sensing unit in the shape of a triangular prism in this sensing array is relatively insensitive, preventing the hum...
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