Decoding method for absolute photoelectric angle sensor

Abstract

The invention relates to the technical field of photoelectric measurement, and provides an absolute photoelectric angle sensor decoding method, which comprises the following steps: step 100, calculating an A code channel periodic angle value EA; step 200, calculating an angle value EB of a B code channel period according to the method in the step 100; step 300, calculating an angle value EC of a C code channel period according to the method in the step 100; step 400, according to the A code channel period angle value EA and the B code channel period angle value EB, calculating an AB code channel temporary angle ABJ; step 500, calculating a temporary angle BCJ of the BC code channel according to the angle value EB of the B code channel period and the angle value EC of the C code channel period; and step 600, calculating an angle Angle corresponding to the current position of the absolute photoelectric angle sensor. The precision, the operation speed and the reliability of the absolute photoelectric angle sensor can be improved.

Description

technical field [0001] The invention relates to the technical field of photoelectric measurement, in particular to a decoding method for an absolute photoelectric angle sensor. Background technique [0002] Absolute photoelectric angle sensor is an integrated and digital product of light, machine and electricity. It is mainly used for precise measurement of shaft angle. It has the advantages of high precision, wide measurement range, small size, light weight and good reliability. Using the technology of this patent can make the product have higher measurement accuracy, higher reliability and repeatability, which not only simplifies the signal processing circuit of the encoder, improves the accuracy and reliability of the encoder, but also realizes the encoder The miniaturization of the application, saving space, and the volume is smaller than the absolute angle sensor of the same precision. [0003] The existing absolute photoelectric angle sensor is an integrated and digit...

AI Technical Summary

Problems solved by technology

[0003] The existing absolute photoelectric angle sensor is an optical, mechanical and electrical integration and digital product. It adopts gray code and matrix code mixed coding technology, which has the characteristics of high precision and wide measurement range. However, its coding method requires multiple code tracks and multiple groups Optocouplers generally require more than ten barcode lines, and the radial width of the grating is relatively large, resulting in a larger volume of the photoelectric angle sensor, high device cost, long debugging time, and low reliability

The decoding process of the existing absolute photoelectric angle sensor requires a lot of signal processing, and the calculation is cumbersome. The rough code and fine code integration technology of determining the approximate position and the fine code to determine the specific position are often used, which requires more hardware resources such as electronic components. , leading to a large cumulative calculation error in the decoding process, complex integration of coarse code and fine code, resulting in long operation time and slow response speed of the absolute photoelectric angle sensor, resulting in the inability of the absolute photoelectric angle sensor to have higher accuracy and reliability sex

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