Joint motion measuring apparatus and measuring method thereof

Abstract

A joint motion measuring apparatus is applied for measuring a rotation angle of a joint. A human body has a moving part connected with the joint. The joint motion measuring apparatus includes an attitude sensing unit, an attitude computing unit, and a joint motion computing unit. The attitude sensing unit is placed on the moving part, and senses the moving part moving from a first position to a second position to output a motion sensing signal. The attitude computing unit is coupled with the attitude sensing unit and transfers the motion sensing signal into an attitude signal. The joint motion computing unit is coupled with the attitude computing unit, and computes a zenith angle of the attitude sensing unit at the second position according to the attitude signal to further obtain the rotation angle of the joint according to the zenith angle.

Description

technical field [0001] The present invention relates to a measuring device and its measuring method, in particular to a joint motion measuring device and its measuring method. Background technique [0002] Due to the aging population and changes in daily life patterns, many chronic diseases (such as stroke, fifty shoulders or degenerative arthritis, etc.) have become issues that cannot be ignored. In addition to causing pain to the subjects, these chronic diseases also affect the range of motion of the subjects, which in turn causes the subjects to have obstacles in daily life activities. [0003] In terms of clinical diagnosis, doctors must judge the severity of the patient's joints through the measurement of the range of motion of the joints, and give appropriate treatment. In terms of clinical treatment and diagnosis, these chronic diseases require rehabilitation to increase the physical activity function of the measured person, and the doctor or physical therapist can u...

AI Technical Summary

Problems solved by technology

[0006] like Figure 1A and Figure 1B As shown, under normal measurement conditions, the subject's arm is from Figure 1A move forward and up when lifted to Figure 1B position, however, as Figure 1C As shown, if the subject turns the arm for some reason when the arm is raised, the muscles of the upper arm will rotate involuntarily. At this time, the known electronic protractor 1 will change its position due to the involuntary rotation of the muscles of the upper arm. , so it may affect the accuracy of electronic protractor 1 measurement

In addition, if the subject's arm does not go up vertically when it is raised, but shifts to the left and right on both sides, it will also affect the accuracy of the electronic protractor 1 during measurement.

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