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 me

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

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1

[0026] The encoding disc of this embodiment includes a barcode grating disc 1, such as figure 1 As shown, the bar code grating disk is above the dual code track disk (transparent code and opaque code in the code track are not shown), the first code track 3 is located next to the peripheral edge of the grating disk 1, and the second code track 4 is next to Set inside the first code lane 3; figure 2 As shown, the first code channel 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 channel 4 is 1080 The single-turn one-dimensional absolute code 6 of the line, the center 2 of the bar code grating disc 1 is fixedly assembled with a rotating shaft to ensure that the rotation center of the rotating shaft is concentric with the rotating center of the grating disc code track.

Example Embodiment

[0027] Example 2

[0028] The code disc of this embodiment also includes a barcode grating disc 1. The barcode grating disc 1 has a dual code track disc above it, the second code track 4 is arranged next to the circumferential 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 channel 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 channel 4 is The single-turn one-dimensional absolute encoder of 1080 lines6, the center 2 of the bar code grating disc 1 is fixedly assembled with a rotating shaft to ensure that the rotation center of the rotating shaft is concentric with the rotation center of the grating disc code track.

Example Embodiment

[0029] Example 3

[0030] Such as image 3 As shown, the code disc of this embodiment includes a barcode grating disc 1 with a one-dimensional incremental relative code 5 and a two-dimensional absolute code 7, and a one-dimensional incremental relative code 5 is set on the peripheral edge of the barcode grating disc 1. Incremental relative code 5 is composed of translucent code 51 and opaque code 52 alternately arranged at equal intervals; two-dimensional absolute code 7 is set inside one-dimensional incremental relative code 5, one-dimensional incremental relative code 5 and two Dimensional absolute coding 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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