Inertial sensor-based electronic pen and writing recognition model establishment method thereof

Abstract

The invention discloses an inertial sensor-based electronic pen and a writing recognition model establishing method of the electronic pen. The electronic pen comprises a refill arranged on a pen point; a spring arranged in the pen point and connected with the refill; a point contact type switch connected with the spring; an acceleration sensor located inside the pen body and close to one end of the pen point, and a gyroscope connected with the acceleration sensor; a power supply connected with the gyroscope and the point contact type switch; a MCU connected with the gyroscope and the acceleration sensor; a wireless transmitting module connected with the MCU; wherein the acceleration sensor and the gyroscope are used for collecting writing track data, and the MCU is used for carrying out input character recognition through an electronic pen writing recognition model. Compared with the prior art, input can be achieved without the aid of other auxiliary devices, and the input device is small, exquisite, convenient to use, capable of being used for inputting various electronic devices and capable of conducting writing in any plane.

Description

technical field [0001] The invention relates to an electronic pen, in particular to an electronic pen based on an inertial sensor and a method for establishing a writing recognition model thereof. Background technique [0002] Existing electronic pens are mainly stylus based on multiple sensors (such as force sensors, inertial sensors, touch sensors) and stylus based on Chinese character databases, and the most widely used capacitive or voltage type tablet stylus at present. [0003] Yet existing electronic pen often has following shortcoming: [0004] (1) There are many integrated circuits, the volume is large or too heavy, and it is inconvenient to use; [0005] (2) It is only applicable to specific equipment and cannot be popularized; [0006] (3) Additional hardware devices (such as handwriting boards, etc.) are required to be used together, and the efficiency is low. [0007] Existing technologies such as "A Double-Writing Electronic Pen Based on Electromagnetic Touc...

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the problem that the electronic pen must be equipped with a handwriting tablet in the prior art, or the problem of changing ink and poor fluency of the traditional electronic pen with ink, the present invention proposes an electronic pen based on an inertial sensor, which is more environmentally friendly and practical, more convenient and comfortable , can directly replace keyboard and mouse devices

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