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Encoder processing circuit for time-sharing photoelectric signal collection

A technology for processing circuits and electrical signals, used in non-electrical signal transmission systems, signal transmission systems, instruments, etc., can solve the problems of difficulty in reducing the size of the encoder, poor reliability, and complex structure, achieving low cost and high reliability. , the effect of small size

Inactive Publication Date: 2008-12-24
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The circuit has a complex structure and a large volume, and it is difficult to reduce the size of the encoder with it, and the reliability is poor

Method used

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  • Encoder processing circuit for time-sharing photoelectric signal collection
  • Encoder processing circuit for time-sharing photoelectric signal collection

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Embodiment Construction

[0013] The invention according to figure 2 The structure shown is implemented. The light-emitting element series 11 is composed of TSIP4401 infrared light-emitting diodes, the photoelectric receiver series 12 is composed of BPW17N phototransistors, the single-chip microcomputer 13 is composed of ADuC812, and the data output module 14 is composed of HC373 and HC244.

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Abstract

This circuit offers a coder processing circuit of time-division photoelectric signal collection. The technique scheme includes the lightening element (LE) series, the photoelectric receiver (PR) series, the single chip processor (SCP) and the data output module (DO). Every LE of LE series corresponds to a PR of PR series. These two forms a photo path. The output end of PR series connects with the A / D input end of SCP while the I / O output end of SCP connects with the bias voltage end of PR series. The output end of SPC connects to the input of DO. This circuit possesses a simple structure, small volume, low cost, high reliability and extensive application foreground. It is meaningful to realize coder miniaturizing.

Description

1. Technical field [0001] The invention belongs to an encoder processing circuit for time-sharing photoelectric signal acquisition and relates to the field of photoelectric measurement technology. 2. Background technology [0002] The photoelectric shaft encoder is a representative angular displacement photoelectric sensor, which is widely used in related technical fields. With the improvement of angle measurement accuracy, the number of encoder bits is also required to increase. In this way, the number of engraved circles of the code disc also increased. Since the number of photoelectric receiving devices required by the encoder is proportional to the number of encoder bits, as the number of encoder bits increases, the number of photoelectric receivers also increases, so the corresponding processing circuit becomes more and more complex. , the circuit size also increases, the development and production cycle is long, the cost is high, and the reliability is low. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08C23/04
Inventor 谢云王显军
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI