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Communication protocol suitable for inductive coupling transmission

A communication protocol and inductive coupling technology, applied in the field of communication protocols, can solve problems such as retention, equipment impact, and data damage, and achieve the effects of ensuring integrity and correctness, improving data transmission efficiency, and reducing data length

Inactive Publication Date: 2020-12-29
杭州浅海科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The form of the command line can eliminate the adverse effects caused by the timeout to a certain extent. At the same time, the use of visible ASCII codes can partially eliminate the interference of garbled characters, but the impact caused by interference still cannot be completely eliminated.
If the garbled code happens to appear at the front of a frame of data, and it happens to be a visible ASCII code, it is likely to be merged into a word with a normal command, thus forming an unrecognizable command, causing damage to this frame of data
At the same time, this command line format is usually suitable for direct input by the user, and generally does not have a verification part. If an error occurs in a frame of data during the information transmission process, it is likely to be retained and cause a greater impact on the device.

Method used

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  • Communication protocol suitable for inductive coupling transmission
  • Communication protocol suitable for inductive coupling transmission
  • Communication protocol suitable for inductive coupling transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Define the communication protocol suitable for inductively coupled transmission.

[0039] Data frame format like figure 1 shown.

[0040] The start bit is a sign of the beginning of a frame of data, generally composed of one or more bytes. Since a single byte is likely to be disturbed by garbled characters, the data in the garbled characters may happen to be this byte, causing the data frame to start early. In the experimental application, the combination of two connected characters "0xC3, 0xA5" has the lowest probability of appearing in garbled characters, so these two bytes are used as the start bit.

[0041] The slave address occupies one byte, indicating who is the communication object of the data frame, and the general range is 1~247. The ID number is stored inside the device, and only responds to communication data related to itself. In addition, the bus master sets this byte as address 0 and broadcasts. In this case, all devices on the bus need to execute thi...

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Abstract

The invention relates to the technical field of communication protocols, in particular to a communication protocol suitable for inductive coupling transmission. The communication protocol suitable forinductive coupling transmission is characterized by comprising the following steps of: 1) setting protocol content; 2) carrying out timeout detection behind a starting bit and in front of the end ofa data frame; and 3) carrying out data transmission. According to the communication protocol, messy codes in an idle state can be effectively filtered out, normal data are reserved, and the frame lossrate of an inductive coupling communication system is remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of communication protocols, in particular to a communication protocol suitable for inductive coupling transmission. Background technique [0002] In ocean monitoring, profile observation is an important means to obtain ocean observation data. The current international method for profile measurement is to use sensors to measure the required parameters and then transmit the measured data to the storage terminal. The data transmission methods are mainly voice communication and inductive coupling transmission, among which inductive coupling transmission has high reliability and is the most widely used. [0003] The inductive coupling transmission technology is based on the principle of electromagnetic induction, so that the two ends of the plastic-coated steel cable are exposed in seawater as electrodes, and the conductive properties of seawater are cleverly used to form a complete closed loop between the plast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L1/00
CPCH04L69/03H04L69/06H04L1/0061
Inventor 姜飞董刘同童海明宋有为张建新
Owner 杭州浅海科技有限责任公司
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