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Slip ring encoder and encoding method thereof

An encoding method and encoder technology, which is applied in the direction of instruments, collectors, rotating collectors, etc., can solve problems such as sieve holes, blocked holes, and abnormal control or operation of the whole machine.

Active Publication Date: 2015-07-01
NUCTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the slip ring encoder is running for a long time, due to the accumulation of dust and other reasons, the code belt part has sieve holes and blocked holes, resulting in the output of wrong differential pulse signals, causing abnormal control or operation of the whole machine

Method used

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  • Slip ring encoder and encoding method thereof
  • Slip ring encoder and encoding method thereof
  • Slip ring encoder and encoding method thereof

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Embodiment Construction

[0022] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following description includes various specific details to assist in understanding, but these should be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the disclosure. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0023] The terms and words used in the following description and claims are not limited to their bibliographical meanings, but, but, are merely used by the inventor to carry out a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of various example embodiments of the present invention are provided ...

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Abstract

Disclosed is an encoder and encoding method for slip ring. The encoder includes: an encoding belt (50) that is fixed to a slip ring and has a plurality of holes regularly arranged on the encoding belt; at least one pair of first sensors (52-1, 52-2, 54-1, 54-2) provided on one side of the encoding belt, wherein the first sensors of each pair generate a first sense signal (A1, B1) and a first redundant sense signal (A2, B2) respectively based on light emitted from the other side of the encoding belt and passing through the plurality of holes, when the encoding belt rotates with the slip ring; and at least one signal combiner (56, 58) connected to the at least one pair of the first sensors, and configured to combine the first sense signal and the first redundant sense signal to obtain a combined sense signal (A', B') as a first encoded signal. With embodiments of the present invention, a redundant signal is provided by using a redundant sensor, and it is possible to avoid interference of foreign substance, improve stability of encoded signals and ensure normal operation of equipment.

Description

technical field [0001] Exemplary embodiments of the present invention generally relate to the field of encoders, and in particular to a slip ring encoder with redundant sensors and an encoding method thereof. Background technique [0002] Slip rings are commonly used in, for example, CT equipment. Usually, the X-ray source and detector are fixed on the circular slip ring surrounding the object to be inspected. Every time a circle is moved during work, an image of a thickness section of the object to be inspected is obtained. In the existing CT equipment, in order to obtain image information of different viewing angles, the rotation of the slip ring is required, and the position and rotational speed information during the rotation of the slip ring is required. For this reason, a slip ring encoder is designed. Its main function is to convert the information of the position and speed of the slip ring rotation into two orthogonal differential pulse signals of A and B phases and ...

Claims

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Application Information

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IPC IPC(8): G01D5/36
CPCH01R39/08G01D5/24476G01D5/3473G01D5/24461
Inventor 朱玉民张金宇丁辉唐虎
Owner NUCTECH CO LTD