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Joint angle measuring method and system

A joint angle and measurement system technology, applied in the field of sensors, can solve the problems of expensive equipment and poor accuracy, and achieve the effects of continuous measurement, reduced workload, and simple operation

Inactive Publication Date: 2018-01-19
武汉元生创新科技有限公司
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Problems solved by technology

Solve the problem of poor precision and expensive equipment in the prior art

Method used

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  • Joint angle measuring method and system
  • Joint angle measuring method and system

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Embodiment Construction

[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0041] The embodiment of the present invention provides a method for joint angle measurement, such as figure 1 As shown, the method is specifically:

[0042] S101. The joint angle measurement system acquires the posture quaternion data of multiple nodes of the joint (such as the elbow joint or the knee joint, the elbow joint is taken as an example in the embodiment of the present invention) thr...

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Abstract

The invention belongs to the technical field of sensors, and provides a joint angle measuring method and a joint angle measuring system. For the joint angle measuring device and the joint angle measuring method, micro attitude sensors are adopted. The attitude sensors are fixed to the limb at two ends of a movable joint in a pasting manner or in a manner adopting a bandage, and the limb movement attitude result measured by the attitude sensors is converted into the movement angle of the joint through a specific mathematical relation. The invention aims at providing the measuring mode which islow in cost, is flexible, and is free of the limitation of site requirements, with the measuring mode, the measurement precision in the prior art is improved, the user experience is promoted, and theproblems that the precision is poor and the device is expensive in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of sensors, and more particularly relates to a joint angle measurement method and system. Background technique [0002] The angle change during the joint movement of human body is an important basis for clothing design, personal protective equipment, human-machine interface design, and human body modeling and simulation. [0003] The traditional joint angle measurement methods are mainly visual inspection and goniometer measurement. The error of the visual method is relatively large, so it is only suitable for rough qualitative measurement. A protractor usually consists of a specially designed mechanism consisting essentially of two legs and a graduated dial on which the angle between the legs can be read. When measuring the joint activity angle, align the two legs with the limbs at both ends of the joint, and directly read the angle value on the scale dial. This measurement method is only for the measure...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/107A61B5/11
Inventor 张生志刘超军罗璋余帅
Owner 武汉元生创新科技有限公司
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