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Coding disc, photoelectric angle measurement encoder using same, and work method thereof

An encoder disk and encoder technology, which is applied in the use of optical devices to transmit the directions of sensing components, instruments, measuring devices, etc., can solve problems such as high angle measurement accuracy, and achieve improved measurement speed, accuracy and recognition speed. The effect of sex and precision

Active Publication Date: 2017-05-24
CHANGZHOU XINRUIDE INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many systems that use relative angle measurement methods use photodiodes as sensors. The response speed of photodiodes is very fast and can be considered as real-time response. The amount of data is very small, and the method of processing these data is also very simple and fast. The disk measurement speed is extremely fast, which can realize real-time angle measurement at high speed, but it has high requirements for the accuracy of the incremental encoder grating, the control of the mechanical assembly size of the system, and the mechanical stability. The higher the accuracy of the system, the higher the requirements for these standards The higher the requirements, it is difficult to achieve higher angle measurement accuracy

Method used

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  • Coding disc, photoelectric angle measurement encoder using same, and work method thereof
  • Coding disc, photoelectric angle measurement encoder using same, and work method thereof
  • Coding disc, photoelectric angle measurement encoder using same, and work method thereof

Examples

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Embodiment 1

[0026] The coding disk of the present embodiment includes a barcode grating disk 1, such as figure 1 As shown, the barcode grating disk is a double code track disk (the light-transmitting code and the opaque code in the code track are not shown), the first code track 3 is set adjacent to the peripheral edge of the grating disk 1, and the second code track 4 is adjacent to The inner side of the first lane 3 is set; such as figure 2 As shown, in the first code track 3 is a one-dimensional incremental relative code 5 of 2500 lines, which is composed of 2500 light-transmitting codes 51 and opaque codes 52 arranged alternately at equal intervals; in the second code track 4 is 1080 lines The single-turn one-dimensional absolute coding 6 of the line, the center 2 of the barcode grating disk 1 is fixedly assembled with the rotating shaft, ensuring that the rotating center of the rotating shaft is concentric with the rotating center of the code track of the grating disk.

Embodiment 2

[0028] The code disc of the present embodiment also includes a barcode grating disc 1, which is a double code track disc above the bar code grating disc 1, the second code track 4 is arranged adjacent to the peripheral edge of the grating disc 1, and the first code track 3 is next to the second code track 4 is set on the inner side; the first code track 3 is a one-dimensional incremental relative code 5 of 2500 lines, which is composed of 2500 light-transmitting codes 51 and opaque codes 52 arranged alternately at equal intervals; the second code track 4 is 1080 lines of single-turn one-dimensional absolute encoding 6, the center 2 of the barcode grating disk 1 is fixedly assembled with the rotating shaft, ensuring that the rotating center of the rotating shaft is concentric with the rotating center of the code track of the grating disk.

Embodiment 3

[0030] Such as image 3 As shown, the code disk of this embodiment includes a barcode grating disk 1 provided with a one-dimensional incremental relative code 5 and a two-dimensional absolute code 7. Incremental relative codes 5 are composed of light-transmitting codes 51 and opaque codes 52 arranged alternately at equal intervals; two-dimensional absolute codes 7 are arranged inside one-dimensional incremental relative codes 5, and one-dimensional incremental relative codes 5 and two-dimensional Dimensional absolute encoding of 7 concentric settings.

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Abstract

The invention relates to a coding disc, a photoelectric angle measurement encoder using same, and a work method thereof; the coding disc comprises a grating plate; the plate surface of the grating plate is coaxially provided with a relative coding and an absolute coding; the first code track to which the relative coding is located is concentrically arranged with the grating plate center; the second code track to which the absolute coding is located is concentrically arranged with the grating plate center; the relative coding and the absolute coding are coaxially arranged on the same grating plate, so the photoelectric angle measurement encoder can select the relative coding or the absolution coding as measuring basis according to speed differences; under the support of absolute type angle measurement, the relative type angle measurement can calculate the absolute angle without using a zero crossing signal; under the support of the relative angle measurement, the absolute type angle measurement can greatly improve bar code identification correct rate and identification speed, thus removing error codes, improving measuring speed, and improving correctness and precision.

Description

technical field [0001] The invention relates to the technical field of photoelectric measuring equipment, in particular to a coded disk, a photoelectric angle measuring encoder using the coded disk and a working method thereof. Background technique [0002] There are two main methods for measuring the rotation angle, one is relative angle measurement, and the other is absolute angle measurement. In the process of measuring the rotation angle, the photoelectric encoder is an extremely important tool; the photoelectric encoder is a digital detection device integrating light, mechanics and electricity. It has high resolution, high precision, simple structure and small size. , reliable use, easy maintenance, and high cost performance. In the past ten years, it has developed into a mature series of industrial products with multiple specifications and high performance. It is widely used in CNC machine tools, robots, radars, photoelectric theodolites, ground commanders, It has bee...

Claims

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Application Information

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IPC IPC(8): G01D5/38G01D5/347
CPCG01D5/3473G01D5/34792G01D5/38
Inventor 王保建王秋辉
Owner CHANGZHOU XINRUIDE INSTR
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