Flexible capacitive tactile sensor, electronic skin, wearable device and method

Abstract

The invention discloses a flexible capacitive touch sensor, electronic skin, a wearable device and a method. The flexible capacitive touch sensor comprises a sensing layer, a pressure-sensitive layerand a driving layer. The sensing layer as an upper electrode layer is used to sense a touch position and pressure; the pressure-sensitive layer as an interval and transmission layer is connected withthe sensing layer, and used to transmit the touch position and pressure sensed by the sensing layer; and the driving layer as a lower electrode layer is connected with the pressure-sensitive layer, isused to detect and analyze the position and magnitude of the pressure, and comprises touch units in the same structure and insulation parts among the touch units. The structure of each touch unit satisfies that when a contact to be tested is in different positions, the relative area proportion of the touch units corresponding to the position of the contact to be tested is changed. The sensor candetect the 3D pressure magnitude and pressed position at the same time, and is also characterized by high precision, low power consumption, novel structure and higher sensing sensitivity.

Description

technical field [0001] The disclosure belongs to the technical field of sensing technology and artificial intelligence application, and relates to a flexible capacitive touch sensor, an electronic skin, a wearable device and a method. Background technique [0002] The rapid development of intelligent robots has attracted worldwide attention, playing an increasingly important role in medical equipment, sports, industrial equipment and other fields. The intelligent robot directly interacts with the external environment when working, so as to perceive and judge the physical characteristics of the external environment, which requires the robot to process the tactile information. It can be seen that the realization of the sense of touch is very important to the intelligence of the robot. In order to meet such demands, scholars from all over the world have paid sufficient attention to tactile research. [0003] In human-computer interaction, in order to ensure safety, tactile se...

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Problems solved by technology

[0004] The most important factors in tactile research are the magnitude and position of the contact force. In the prior art, the sensing representation and detection are generally based on a single mechanical quantity, such as the magnitude of the detected pressure or the position of the detected pressure. Or realize the detection of the position or magnitude of the pressure in different components, and integrate these components, but rarely realize the simultaneous detection of the magnitude and position of the three-dimensional pressure in a single component. This integration realizes the magnitude and position of the force The design has the defects of complex process, high cost and unstable performance

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