Proximate sense transducer based on plane-parallel capacitor and detection method thereof

Abstract

The invention discloses a proximate sense transducer based on a plane-parallel capacitor. A surface layer substrate, a middle layer and a bottom layer substrate of the same shapes and sizes are laminated from top to bottom; a driving electrode, induction electrodes and a protection ring are arranged on the upper surface of the surface layer substrate; the driving electrode is arranged at the central position of the upper surface of the surface layer substrate; the outer periphery of the driving electrode is coupled with the protection ring; the outer periphery of the protection ring is coupled with two or more induction electrodes of the same structures; the induction electrodes are symmetrically distributed on the outer periphery of the protection ring; the induction electrodes generate corresponding coupling capacitance together with the driving electrode respectively; the middle layer serves as a GND grounding layer; the protection ring is punched with a first small circular hole; the surface layer substrate is punched with a second small circular hole; the first small circular hole is fully coincided with the second small circular hole. The proximate sense transducer has high sensitivity and high accuracy, and the problem that the proximate sense transducer in the prior art cannot simultaneously detect the approaching distance and direction of an object to be tested and cannot judge the property of the object to be tested is solved.

Description

technical field [0001] The invention belongs to the field of electronic technology, and relates to a proximity sensor based on parallel plate capacitance and a detection method thereof, especially applied to a robot hand for measuring the approach distance, approach direction and attributes of an object to be measured. Background technique [0002] With the development of electronic technology, control theory, computer technology, sensor technology, artificial intelligence and other disciplines, the research of robot technology has shifted from the teaching reproduction type to the adaptive control type with sensory function. This transformation requires robots to have a perception system that enables the robot to "sense" changes in itself and the external environment through sensory sensors. Proximity sensor is one of such sensors. [0003] Proximity sensors play an important role in various activities such as robot recognition, positioning and tracking, and obstacle avoid...

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Problems solved by technology

[0008] In order to achieve the above object, the present invention provides a proximity sensor based on parallel plate capacitance, which has high sensitivity and high precision, and solves the problem that the proximity sensor in the prior art cannot detect the approach distance and direction of the object to be measured at the same time, and cannot judge the object to be measured. The problem of measuring the properties of objects

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