Orthogonal signal decoding system and method based on cortex core microcontroller

An orthogonal signal and single-chip technology, applied in the field of orthogonal signal decoding, can solve the problems that the stability of the special chip affects the stable operation of the main board, the orthogonal (coding) signal decoding method is complicated, and the production cost of the decoding system is high, and the software development is shortened. cycle, saving software development costs, and saving the effect of general port overhead

Inactive Publication Date: 2016-09-07
JIANGSU DONN TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the stability of the dedicated chip will also affect the stable operation of the entire motherboard.
[0005] It can be seen that the existing decoding methods for orthogonal (encoded) signals are complicated, and the decoding system not only has high production costs, but also has poor stability

Method used

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  • Orthogonal signal decoding system and method based on cortex core microcontroller
  • Orthogonal signal decoding system and method based on cortex core microcontroller
  • Orthogonal signal decoding system and method based on cortex core microcontroller

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Embodiment 1

[0024] Such as figure 1 , 2 Shown, a kind of decoding system based on the orthogonal signal of Cortex core single-chip microcomputer, comprises Cortex core single-chip microcomputer 1, isolation conversion circuit 2 and rectification filter circuit 3, described Cortex core single-chip microcomputer 1 is built-in timer port, and described rectification filter circuit The input end of 3 is an orthogonal signal input connection end, the output end of the rectification filter circuit 3 is electrically connected to the input end of the isolation conversion circuit 2, and the output end of the isolation conversion circuit 2 is electrically connected to the timer port of the Cortex core microcontroller 1.

[0025] The timer of the Cortex core microcontroller 1 of the present invention decodes the received quadrature signal to obtain the frequency F of the quadrature signal. The single-chip microcomputer based on the Cortex core has the advantages of high performance, high integratio...

Embodiment 2

[0032] Such as image 3 Shown, a kind of decoding method based on the quadrature signal of Cortex kernel single-chip microcomputer, described quadrature signal decoding is to obtain the frequency F of quadrature signal, and the concrete decoding step is:

[0033] a, adopt as above-mentioned decoding system based on the orthogonal signal of Cortex core single-chip microcomputer, the timer of Cortex core single-chip microcomputer 1 is set to decoder port mode of operation, and the timer of setting Cortex core single-chip microcomputer 1 detects the orthogonal signal Counting is performed on rising and falling edges. At this time, the timer of Cortex core MCU 1 is a decoder;

[0034] b. Connect the orthogonal signal to be decoded to the rectification and filtering circuit 3, and perform rectification and filtering by the rectification and filtering circuit 3, and then input the rectified and filtered orthogonal signal to the isolation conversion circuit 2 for isolation and coupli...

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Abstract

The invention relates to an orthogonal signal decoding system based on a Cortex core single-chip microcomputer. The orthogonal signal decoding system comprises a rectifying filtering circuit, an isolation switching circuit and the Cortex core single-chip microcomputer which are sequentially electrically connected. A decoding method comprises the following specific steps: the timer of the Cortex core single-chip microcomputer is set into a decoder port working mode; orthogonal signals are accessed to the rectifying filtering circuit to be rectified and filtered and then are sent to the isolation switching circuit to be converted into level signals, and then the level signals are sent to the timer port of the Cortex core single-chip microcomputer; the timer of Cortex core single-chip microcomputer counts the detected level signals; a register value stored in the timer of the Cortex core single-chip microcomputer is S0, and the register value is S1 after time T; at the moment, the frequency F of the orthogonal signals to be decoded is obtained, F= (S1-S0) / T, namely the decoding of the orthogonal signals is completed. The method is simple, the production cost of the system is low, and the system stability can be increased.

Description

technical field [0001] The invention belongs to the technical field of orthogonal signal decoding, and in particular relates to a decoding system and method of an orthogonal signal based on a Cortex core single-chip microcomputer. Background technique [0002] The quadrature (encoded) signal can effectively eliminate the interference caused by the pulse edge oscillation. Therefore, the orthogonal (encoded) signal has good anti-magnetic interference performance, high precision, fast response, easy to identify the direction and position of the turntable, etc. Taking advantage of excellent performance, the quadrature (encoded) signal has been widely used in industrial control and other fields. It is very important to measure the direction and speed of the quadrature (encoding) signal, which is related to the smooth operation of the entire system and the accuracy of the motion state and position. However, the current decoding system for the orthogonal coded signal is still stag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/06H03M7/30
Inventor 李俊宦娟
Owner JIANGSU DONN TECH
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