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The anti-interference characteristics of the encoder and the reliability of the data are greatly improved

The anti-interference characteristics of the encoder and the reliability of the data are greatly improved

Jul 10, 2019

There are many optical channel engraving lines on the absolute encoder optical code disc. Each engraved line is arranged in 2 lines, 4 lines, 8 lines, and 16 lines in order, so that each line of the encoder is read at each position of the encoder. Passing and dark, obtaining a unique binary code (Gray code) from the zeroth power of 2 to the n-1 power of 2, which is called an n-bit absolute encoder. Such an encoder is memorized by an optical code disc.

The absolute encoder is coded by the mechanical position, it does not need to remember, no need to find a reference point, and does not have to count all the time, when to know the position, when to read its position. In this way, the anti-interference characteristics of the encoder and the reliability of the data are greatly improved.

From single-turn absolute encoder to multi-turn absolute encoder, the absolute value rotates the single-turn absolute encoder to measure the scribe lines of the photoelectric encoder in rotation to obtain the unique code. When the rotation exceeds 360 degrees, The encoding returns to the origin, so that it does not conform to the principle of absolute encoding. Such encoding can only be used for measurements within a range of 360 degrees, called a single-turn absolute encoder.

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