Flexible tactile pressure sensor

Abstract

The invention discloses a flexible tactile pressure sensor. The flexible tactile pressure sensor comprises a substrate layer, an electrode layer, a double-faced adhesive tape layer and a sensing material layer; the substrate layer is of a flexible structure; the electrode layer is arranged on the surface of the substrate layer and comprises a plurality of interdigital electrode units and outgoinglines for connecting the interdigital electrode units with an external circuit; the thickness of the double-faced adhesive tape layer is not less than that of the electrode layer, and the double-facedadhesive tape layer has a first hollow-out area and a second hollow-out area; one face of the double-faced adhesive tape layer is adhered to the substrate layer, and the other face of the double-faced adhesive tape layer is adhered to the sensing material layer to form at least one relatively independent sensing chamber and a gas channel for communicating the sensing chamber with the outside; andthe interdigital electrode units are distributed in the sensing chamber, and each interdigital electrode unit and the sensing material area corresponding to the interdigital electrode unit form a sensing unit. The flexible tactile pressure sensor provided by the invention can realize multi-channel and multi-direction contact pressure test in the cavity to be tested.

Description

technical field [0001] The invention belongs to the technical field of human body natural cavity pressure detection, and in particular relates to a flexible tactile pressure sensor capable of realizing multi-channel and multi-directional pressure detection. Background technique [0002] The natural cavity of the human body mainly refers to the digestive tract, anorectum, ear and nose cavity, vagina, throat and other human organs. Existing detection methods of the natural cavity of the human body mainly include: 1) perfusion pressure measurement catheter detection method, that is, inject water into the catheter through a micropump, the water flow rate is constant, and the resistance overcome when the test hole at the end of the catheter overflows is the intracavity pressure. This test method needs to open an overflow hole on the conduit, and because the spatial orientation of each adjacent side hole is 45 or 90 degrees, it is difficult to accurately locate the detection area;...

AI Technical Summary

Problems solved by technology

The above-mentioned Manoscan sensor can realize multi-channel and high-resolution detection, but the pressure measuring catheter needs to be sealed with silicone, the manufacturing process is very complicated, and the cost is very high. Moreover, because each sensing unit is not flexible, the sensor is difficult to integrate On other medical devices such as gastroscopes, gastric tubes, and capsule endoscopes, the silica gel will deform under the influence of temperature, which will affect the accuracy of measurement.

[0004] It can be seen that the pressure detection methods in the natural cavity of the human body disclosed in the prior art cannot simultaneously meet the requirements of flexible, multi-channel, multi-directional, and rollable assembly for pressure detection in the natural cavity of the human body.

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