#$%^&*AU2019100816A420190829.pdf#####ABSTRACT The present invention discloses an arm motion capture device, comprising an arm capture assembly, wherein the arm capture assembly comprises an upper arm capture assembly, a lower arm capture assembly and a wrist capture assembly, the upper arm capture assembly being movably connected with the lower arm capture assembly; the lower arm capture assembly being movably connected with the wrist capture assembly, to rotate and swing the upper arm capture assembly, rotate and swing the lower arm capture assembly, and rotate and swing the wrist capture assembly. Moreover, since the elbow fixing unit and the wrist fixing unit are hinged, the spacing can be adjusted to adapt to different size of arms; besides, the radial fixing plate of the wrist fixing unit can generate a certain deformation according to the rotation of the wrist, to achieve the detection of wrist rotation. The wrist sliding shaft is set to adapt to the wrist swing, the spring enables the wrist sliding shaft to reset, and the wrist unit drives the joint body II to swing, to achieve the detection of the wrist swing information. 1920 201 200 2022 2021 21 222020 2023 22X 211 212 213 FIG. 12/12 2 20 21 FIG.2