Laser digital angle measuring method and apparatus thereof
An angle measurement device and angle measurement technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of difficulty in making optical discs, inability to determine the direction of rotation, inconvenient implementation, etc., and achieve light weight, convenient implementation, and The effect of small deformation
Inactive Publication Date: 2005-08-10
王治平
View PDF0 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Regarding the previous single-angle and double-angle line reading methods of optical discs: the single-angle line reading method of optical discs cannot determine the direction of rotation, while the double-angle line reading method can determine the direction of rotation, but it needs to make two circles of angle lines, and The width of the line segment is staggered by about half of the angle, which has the disadvantages that the production of the disc is difficult and inconvenient to implement
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] Below in conjunction with accompanying drawing and concrete example for further description:
[0025] The laser digital angle measuring method of the present invention is to use laser to etch a circle of radial angle lines evenly and densely distributed in the circumferential direction on the optical disc, and use two beams of lasers with different frequencies arranged in the front and back of the circumference to read the angle lines, and the two beams of laser The circumferential spacing is smaller than the circumferential spacing of the angle lines, and the circumferential widths of the two laser beams are both smaller than the circumferential width of the angle lines, and the angular direction is determined according to the order in which the feedback signals of the two laser beams appear, and the angle is determined according to the number of occurrences of the feedback signals. On the inside of the angle line, the optical disc also uses laser to etch four radial zo...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention relates to a laser digital angle measuring method and its equipment. Said method includes the following steps: on the optical disk using laser to etch at least one turn of circumferentially, uniformly and densely distributed radial angle line; using circumferentially front and rear arranged two beams of laser with different frequencies to fetch angle line; the circumferential space of two beams of laser is less than that of angle line, and the circumferential width of two beams of laser is less than that of angle line, according to the sequence of production of feedback signals of two beams of laser defining angle direction, and according to the frequency of production of feedback signals defining angle.
Description
technical field [0001] The invention relates to the precision measurement technology of angle, in particular to a laser digital angle measurement method and its device. Background technique [0002] Commonly used angle measurement methods include: inductance (capacitance) detection method; sliding variable resistance method; pulse disk photoelectric hole reading or composite hole reading method; optical disc single and double angle line reading method, and other methods. [0003] Regarding the previous single-angle and double-angle line reading methods of optical discs: the single-angle line reading method of optical discs cannot determine the direction of rotation, while the double-angle line reading method can determine the direction of rotation, but it needs to make two circles of angle lines, and Staggering about half the width of the angled line segment has the disadvantages that it is difficult to make a disc and is inconvenient to implement. [0004] How an ordinary ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/26
Inventor 王治平
Owner 王治平