A capacitive touch sensor

Abstract

The present invention proposes a capacitive touch sensor, whose single sensing unit is triangular in structure and consists of an upper pole plate, a lower pole plate and a dielectric layer; the upper pole plate and the lower pole plate are arranged correspondingly, wherein the upper pole plate includes three One pole plate, the lower pole plate includes three second pole plates, the first pole plate and the second pole plate are isosceles triangles with an apex angle of 120 degrees, and the apex angles of the three first pole plates are oppositely arranged , the tops of the three second plates are connected to each other, and the three first plates and the three second plates together form three independent capacitors; this structural arrangement reduces the number of plates and capacitors, greatly The measurement circuit is simplified to realize accurate measurement and decoupling of three-dimensional force.

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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