Miniature absolute encoder processing circuit with 16 bit output

Abstract

The invention relates to a treatment circuit of a micro absolute type encoder with 16-bit output, in particular to a brand new absolute type encoder treatment circuit belonging to the technical field of the photoelectric detecting technology. The treatment circuit comprises a microcontroller, an interface circuit and a voltage regulation module and is characterized in that 16-line photoelectric signals from the head of the ray machine of the encoder are connected with the simulation input end of the microcontroller, the serial port output pin of the microcontroller is connected to a drive input end of the interface circuit, the serial port input pin of the microcontroller is connected to the receiver output end of the interface circuit, the output end of the voltage regulation module supplying power of 3.3 V to the microcontroller and the head of the encoder and other parts of the circuit are supplied with power of 5 V. The invention reduces the volume of a circuit board and enables the ray machine of the encoder and a circuit processing part to be a whole part, thereby being favorable for debugging and maintenance.

Description

technical field [0001] The invention belongs to a brand-new absolute encoder processing circuit involved in the technical field of photoelectric detection. Background technique [0002] The photoelectric encoder is a device widely used in angle and displacement measurement. It is a measuring instrument that uses the code disc as the displacement reference and the grating moiré fringe as the technical basis to precisely measure the geometric displacement. [0003] The encoder is divided into absolute type and incremental type according to the encoding method of the code disc. The angular position of the absolute encoder is determined by the mechanical position of the photoelectric code disc. The device has strong anti-interference characteristics and data reliability. [0004] Compared with incremental encoders, absolute encoders use more photoelectric devices and process more photoelectric signals, which increases the complexity and size of the encoder processing circuit. ...

AI Technical Summary

Problems solved by technology

The circuit requires a lot of hardware and the integration level is not high, so it is difficult to reduce the volume

At the same time, the processing circuit is separated from the optical head of the encoder, which is not conducive to the debugging and maintenance of the encoder

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