发明名称 |
High-Precision Angle Positioning Device |
摘要 |
The present invention proposes a high-precision angle positioning device. To complete a high-precision angle positioning operation, the high-precision angle positioning device firstly uses a non-deformable laser-speckles image-acquiring unit to acquire N non-deformable laser-speckles images from a rotary disk unit, and then defines N coordinated non-deformable laser-speckles images and N coordinated angles through an angle calibrating unit and an angle recognizing and positioning unit; therefore, after finding an i-th coordinated non-deformable laser-speckles image having the largest overlapping area with an immediate non-deformable laser-speckles image through image comparison, an immediate image plane displacement between the immediate non-deformable laser-speckles image and the i-th coordinated non-deformable laser-speckles image can be calculated for calculating immediate sub-coordinated angle of immediate non-deformable laser-speckles image, such that an immediate angle coordinate for the immediate non-deformable laser-speckles image can be calculated through an i-th coordinated angle of the i-th coordinated non-deformable laser-speckles image and the immediate sub-coordinated angle. |
申请公布号 |
US2015160043(A1) |
申请公布日期 |
2015.06.11 |
申请号 |
US201314101343 |
申请日期 |
2013.12.10 |
申请人 |
Chung-Shan Institute of Science and Technology |
发明人 |
Hwang Yi-Yuh;Liu Guang-Sheen;Hwang Chin-Der;Chang Wei-Guo;Liao Chih-Ming |
分类号 |
G01D5/30;G01B11/00;G01C19/72 |
主分类号 |
G01D5/30 |
代理机构 |
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代理人 |
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主权项 |
1. A high-precision angle positioning device, comprising:
a rotary disk unit; a non-deformable laser-speckles image-acquiring unit, being used for emitting a coherent light to a positioning surface of the rotary disk unit, so as to acquire a non-deformable laser-speckles image of the positioning surface by receiving a reflected light coming from the positioning surface; an angle calibrating unit, being used for measuring and calibrating a calibrated angle coordinate of the non-deformable laser-speckles image; an angle recognizing and positioning unit, being coupled to the non-deformable laser-speckles image-acquiring unit and the angle calibrating unit; and a storage unit, being used for storing the non-deformable laser-speckles image acquired by the non-deformable laser-speckles image-acquiring unit and the calibrated angle coordinate measured by the angle calibrating unit; wherein when turning the rotary disk unit a full circle, the non-deformable laser-speckles image-acquiring unit would accordingly acquire N sheets of non-deformable laser-speckles image, and the angle calibrating unit would simultaneously measure N numbers of calibrated angle coordinate for the N sheets of non-deformable laser-speckles image; therefore, the angle recognizing and positioning unit is able to define N sheets of coordinated non-deformable laser-speckles image and N numbers of coordinated angle according to the N calibrated angle coordinates and the N non-deformable laser-speckles images, and then the N coordinated non-deformable laser-speckles images and the N coordinated angles are stored in the storage unit; wherein when turning the rotary disk unit by an arbitrary angle, the non-deformable laser-speckles image-acquiring unit would accordingly acquire an immediate non-deformable laser-speckles image, and the angle recognizing and positioning unit would find an i-th coordinated non-deformable laser-speckles image having the largest overlapping area with the immediate non-deformable laser-speckles image through image comparison between the immediate non-deformable laser-speckles image and the N coordinated non-deformable laser-speckles images in the storage unit, and then calculates an immediate image plane displacement between the immediate non-deformable laser-speckles image and the i-th coordinated non-deformable laser-speckles image, so as to calculate an immediate sub-coordinated angle of the immediate non-deformable laser-speckles image; wherein an immediate angle coordinate for the immediate non-deformable laser-speckles image can be calculated through an i-th coordinated angle of the i-th coordinated non-deformable laser-speckles image and the immediate sub-coordinated angle. |
地址 |
Longtan/Taoyuan TW |