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Method for realizing MVB/WTB frame data real-time decoding by utilizing oscilloscope

A technology of oscilloscope, frame data, applied in the field of communication

Active Publication Date: 2012-01-04
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for realizing real-time decoding of MVB and WTB frame data by using an oscilloscope to make up for the shortcoming that the oscilloscope cannot decode MVB / WTB frame data and to monitor MVB / WTB equipment in real time. Frame data content sent by communication and transmitter test of MVB / WTB equipment

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  • Method for realizing MVB/WTB frame data real-time decoding by utilizing oscilloscope
  • Method for realizing MVB/WTB frame data real-time decoding by utilizing oscilloscope
  • Method for realizing MVB/WTB frame data real-time decoding by utilizing oscilloscope

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Embodiment Construction

[0040] The signal transmission rate of MVB equipment is 1.5Mbit / s, and the period is 667ns (667ns is defined as 1BT in the IEC61375-1 standard). The frame is divided into ESD and EMD frames. Both ESD and EMD frame data adopt Manchester encoding, and the start delimiter is a fixed sequence consisting of {start bit, "NH", "NL", "0", "NH", "NL", "0", "0", "0"}, in which "NH" It is 1BT high level encoding, "NL" is 1BT low level encoding, and "0" is 1BT Manchester encoding. The length of the main frame is fixed at 33 bits, including: 9-bit main start delimiter; 4-bit F-code, 12-bit address or parameter; 8-bit check sequence. There may be five lengths from the frame: 33, 49, 81, 153 or 297 bits, including: 9 bits from the start delimiter; 16 to 256 bits of data; each 64-bit sequence has an 8-bit check sequence. The signal transmission rate of WTB equipment is 1Mbit / s, and the period is 500ns. WTB frame includes: 16-bit preamble, two 8-bit flag bits, 32-bit link control field, 0-10...

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Abstract

The invention discloses a method for realizing MVB / WTB frame data real-time decoding by utilizing an oscilloscope. The method comprises the following steps: setting a decoding type; collecting data with an oscilloscope; transmitting collected data to an industrial control computer with the oscilloscope; searching a start point; carrying out 1 / 2 period sampling; determining a prime frame and an accessory frame; decoding; displaying hexadecimal frame data; quitting a decoding program manually. According to the invention, a disadvantage that an oscilloscope can not decode MVB / WTB frame data is solved.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for realizing real-time decoding of MVB and WTB frame data by using an oscilloscope. Background technique [0002] At present, the oscilloscope does not support MVB and WTB frame data decoding. We can only see the waveform of MVB and WTB data through the oscilloscope, and cannot monitor the frame data content sent by MVB / WTB device communication and the transmitter test of MVB / WTB device in real time. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for realizing real-time decoding of MVB and WTB frame data by using an oscilloscope to make up for the shortcoming that the oscilloscope cannot decode MVB / WTB frame data and to monitor MVB / WTB equipment in real time. Frame data content sent by communication and transmitter test of MVB / WTB equipment. [0004] For solving the problems of the technologies described...

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Application Information

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IPC IPC(8): H04L1/00
Inventor 丁荣军陈高华冯江华邓珩吴赟高连升
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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