Multi-turn encoder adopting reed pipes and direction judging and turn-number counting method thereof

A reed switch and encoder technology, which is applied in the field of multi-turn encoders and their direction-judging and counting circles, can solve problems such as complex structures, poor stability characteristics, and poor reliability, and achieve complex structures, good stability characteristics, and reliable sex high effect

Active Publication Date: 2016-06-29
长春汇通光电技术有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The invention provides a multi-turn encoder using a reed switch and a method for counting the number

Method used

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  • Multi-turn encoder adopting reed pipes and direction judging and turn-number counting method thereof
  • Multi-turn encoder adopting reed pipes and direction judging and turn-number counting method thereof
  • Multi-turn encoder adopting reed pipes and direction judging and turn-number counting method thereof

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Embodiment Construction

[0041] Two bearings 2 are installed in the main body of the encoder 1, the outer ring of the bearing is connected to the main body, the inner ring of the bearing is connected to the encoder shaft 3, the code disc 4 is installed on the encoder shaft, the PCB board 5 is installed on the main body, and the magnet 6 is installed on the On the encoder shaft, the direction determination and counting module 7 is located at the bottom of the PCB above the magnet, the single-turn data processing unit 8 and the counting processing unit 9 are respectively located on the PCB, and the battery 10 supplies power for the direction determination and counting module and the counting processing unit.

[0042] The direction determination and counting module includes one, two or three reed switches 701 for detecting the magnetic field of the magnet, and the reed switches are arranged radially or tangentially.

[0043] A coil 702 is wound around the reed switch.

[0044] When the direction determin...

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Abstract

The invention relates to a multi-turn encoder adopting reed pipes and a direction judging and turn-number counting method thereof and belongs to a multi-turn encoder and a direction judging and turn-number counting method thereof. A rotation turn number counting function of the encoder is achieved by adopting one, two or three reed pipes, the detection of the reed pipes changes with a magnetic field rotating about an axis of the encoder, and opening and closing states are switched to turn on or turn off a follow-up counting circuit so as to calculate the rotating turn number of the encoder. For avoiding counting data loss under the outage condition of a main power supply circuit, a battery is additionally added to keep the counting function under the outage condition. For prolonging the service life of the reed pipes, it is ensured that no switching action is executed under the energization condition, a coil can be wound on the outside, the problem of existing structural complex at present is solved by controlling the switching functions of the reed pipes through the controller, good stability properties are ensured, and the reliability is high.

Description

technical field [0001] The invention relates to a multi-turn encoder and a method for judging direction and counting the number of turns thereof. Background technique [0002] The multi-turn absolute encoder can increase the measurement range of the single-turn absolute encoder, so that the function of measuring the single-turn rotation position can be extended to measure the linear movement distance. There are various ways to count the number of turns of multi-turn encoders, mainly including gear structure counting structure, Hall chip counting and reluctance chip counting. Due to the gear structure, while increasing the weight of the encoder itself, the counting accuracy also depends on the machining accuracy of the gear parts and the corresponding separated code disc. The complex structure brought by the gear structure also brings risks to product reliability. [0003] The Hall chip also has disadvantages such as poor stability and non-universal application. The design ...

Claims

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Application Information

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IPC IPC(8): G01D5/249
CPCG01D5/2497
Inventor 孙月魏健威申春明孙立强吴明飞曲斌张敏王合平李俊龙
Owner 长春汇通光电技术有限公司
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