KR-20260065421-A - Smart keyboard based on electromyography sensor and its height adjustment method

KR20260065421AKR 20260065421 AKR20260065421 AKR 20260065421AKR-20260065421-A

Abstract

The present invention proposes a smart keyboard based on an electromyography sensor and a method for adjusting the height thereof. The smart keyboard of the present invention comprises a measuring unit that measures an electromyography signal sensed by at least one electromyography sensor attached to a user's arm, a control unit that determines whether to adjust the keyboard height according to the measured electromyography signal, and a driving unit that drives the keyboard by changing the height in steps according to a control signal from the control unit to adjust the keyboard height. The control unit stops the driving of the driving unit when the electromyography signal is most stable to adjust the height of the keyboard.

Inventors

박정환
장한뜻
김영진
길민성
박형모
최영호

Assignees

인천대학교 산학협력단

Dates

Publication Date: 20260508
Application Date: 20241101

Claims (12)

A measuring unit that measures an electromyography signal sensed by at least one electromyography sensor attached to the user's arm; A control unit that determines whether to adjust the keyboard height according to the electromyogram signal measured above; and To adjust the height of the keyboard, the driving unit includes a drive unit that drives the keyboard by changing the height in steps according to a control signal of the control unit. An electromyography sensor-based smart keyboard characterized in that the control unit stops the operation of the driving unit when the electromyography signal is stable.
In paragraph 1, The above drive unit is a servo motor, and An electromyography sensor-based smart keyboard in which the servo motors are mounted at each of the four corners of the keyboard.
In paragraph 2, A pinion gear connected to the motor shaft of the above servo motor; and It further includes a rack gear coupled with the pinion gear mentioned above, An electromyography sensor-based smart keyboard that adjusts the height of the keyboard by moving the rack gear, which is engaged with a pinion gear that rotates in one direction by driving the servo motor, in an up-and-down direction.
In paragraph 2, The above servo motors are, An electromyography sensor-based smart keyboard that operates independently by the above-mentioned control unit.
In paragraph 1, The above driving unit is, An electromyography sensor-based smart keyboard that operates in predetermined intervals until the electromyography signal is stable within a predetermined range.
In paragraph 1, An electromyography sensor-based smart keyboard, wherein a threshold value for adjusting the keyboard height is provided, and a control unit determines whether to adjust the keyboard height based on the threshold value.
Servo motors mounted on the four corners of the keyboard body; A pinion gear and a rack gear connected to the motor shaft of the above-mentioned servo motor; and An electromyography sensor-based smart keyboard characterized by comprising a control unit that receives an electromyography signal from at least one electromyography sensor attached to a user's arm and controls the driving of each of the servo motors so that the pinion gear and the rack gear perform gear movements to adjust the height of the keyboard according to the electromyography signal.
In Paragraph 7, A smart keyboard based on an electromyography sensor, wherein the control unit collects the electromyography signal while rotating the servo motors in a certain step, and stops the operation of the servo motors when the electromyography signal shows a relatively low amplitude.
The keyboard height adjustment device, Analysis step for analyzing the electromyogram signal of an electromyogram sensor attached to the user's forearm; A driving step of driving servo motors mounted on the four corners of the keyboard when height adjustment of the keyboard is required according to the analysis result of the electromyogram signal; and A method for adjusting the height of an electromyography sensor-based smart keyboard, characterized by including an adjustment step of collecting and analyzing a new electromyography signal and adjusting the height of the keyboard while the servo motors rotate at regular intervals.
In Paragraph 9, The above analysis step is a height adjustment method for an electromyography sensor-based smart keyboard, which collects and analyzes electromyography sensors at predetermined measurement intervals.
In Paragraph 9, The above adjustment step is a height adjustment method for an electromyography sensor-based smart keyboard, wherein the height of the keyboard is fixed at the time when the electromyography signal shows a relatively low amplitude.
In Paragraph 9, The above adjustment step is a height adjustment method for an electromyography sensor-based smart keyboard, wherein the height of the keyboard is fixed at the point when the user's fatigue level is determined to be lowest.

Description

Smart keyboard based on electromyography sensor and its height adjustment method The present invention relates to a smart keyboard, which is a height-adjustable input device based on an electromyography sensor, and a method for adjusting the height of the smart keyboard. For modern people, computer use occupies the majority of their daily lives at work, cafes, and at home, and usage time is on the rise. This excessive use of computer keyboards is increasing the threat to wrist health. For instance, there is a growing trend of patients undergoing surgery and treatment for conditions such as carpal tunnel syndrome. In fact, according to national disease statistics from the Health Insurance Review and Assessment Service, the number of patients treated for wrist diseases (carpal tunnel syndrome) in Korea in 2022 was recorded at 164,307. Despite this continuous increase, efforts to address this issue are limited to wearing wrist supports or using palm rests on keyboards. In addition, various types of keyboards are being developed recently to prevent musculoskeletal disorders related to keyboard use. For example, a related prior art is the 'position adjustment device for an input device (Korean Published Patent 10-2005-0088726),' which adjusts the position of the keyboard, an input device, by adjusting the height of the stand. However, most existing keyboards, including the aforementioned prior art, have various limitations. Specifically, keyboards do not take into account individual physical conditions or preferences, which can cause discomfort during prolonged use. Furthermore, due to their fixed form, they may not be optimized for all users and fail to adequately respond to changes in individual fatigue levels. Consequently, users remain exposed to the risk of musculoskeletal disorders during prolonged keyboard use and are currently unable to receive a typing environment optimized for their individual needs. FIG. 1 is a configuration diagram for explaining a smart keyboard according to an embodiment of the present invention. FIG. 2 is an example drawing showing a smart keyboard of the present invention. FIG. 3 is a flowchart illustrating the keyboard height adjustment process according to an embodiment of the present invention. The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. In describing the invention, detailed descriptions of related prior art are omitted if it is determined that such detailed descriptions may obscure the essence of the invention. Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. The terms used in this invention are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Expressions indicating a part, such as “part” or “component,” used in this invention mean that the corresponding component may represent a device capable of including a specific function, software capable of including a specific function, or a combination of a device and software capable of including a specific function; however, it is not necessarily limited to the expressed function. This is provided merely to aid in a more comprehensive understanding of the invention, and a person with ordinary knowledge in the field to which this invention pertains can make various modifications and variations from this description. Accordingly, the scope of the present invention is not limited to the described embodiments, and all things equivalent to or having equivalent variations to the claims set forth below, as well as the claims themselves, shall be considered to fall within the scope of the concept of the present invention. The present invention will be described in more detail below based on the embodiments illustrated in the drawings. In general, improper typing posture, which causes wrist pain and musculoskeletal disorders, is closely correlated with forearm muscle activity. According to research, improper wrist angles or excessive pressure induce abnormal activation patterns in the forearm