Capacitive touch sensor

Abstract

The invention provides a capacitive touch sensor. A single sensing unit structure of the capacitive touch sensor is triangular, and is composed of an upper polar plate, a lower polar plate and a dielectric layer. The upper polar plate and the lower polar plate are correspondingly arranged; the upper polar plate comprises three first polar plates, the lower polar plate comprises three second polarplates, the first polar plates and the second polar plates are isosceles triangles with vertex angles of 120 degrees, the vertex angles of the three first polar plates are oppositely arranged, top ends of the three second polar plates are connected with one another, and the three first polar plates and the three second polar plates jointly form three independent capacitors; and through a structural arrangement, the number of polar plates and the number of capacitors are reduced, and a measurement circuit is greatly simplified so that accurate measurement and decoupling of a three-dimensional force are realized.

Description

technical field [0001] The invention relates to the field of sensors, in particular to a capacitive touch sensor. Background technique [0002] With the development and integration of various disciplines, the field of robotics integrating multiple technologies is also booming. In order to realize the intelligence of robots, robots need to have the ability to interact with the outside world. Starting from imitating the perception function of human beings, the current robot already has a variety of sensors to ensure that the robot can receive a variety of information from the outside world. For example, cameras and image processing technology that imitate human vision; vibration sensors and voice recognition technology that imitate human hearing; infrared thermometers that imitate human touch. Among them, the tactile sensor is the only sensor that is in direct contact with the outside world among many sensors, and can obtain rich information about the external environment, su...

AI Technical Summary

Problems solved by technology

However, the single sensing unit of the existing capacitive tactile sensor often contains multiple electrode plates and multiple capacitors, resulting in complex measurement circuits and low sensitivity to tangential force measurement.

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