CN110620816B - Inter-group communication method for ships - Google Patents

Inter-group communication method for ships Download PDF

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CN110620816B
CN110620816B CN201910871802.2A CN201910871802A CN110620816B CN 110620816 B CN110620816 B CN 110620816B CN 201910871802 A CN201910871802 A CN 201910871802A CN 110620816 B CN110620816 B CN 110620816B
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data
value
ship
receiving end
transmission
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CN110620816A (en
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郭行波
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Hangzhou Bifu Technology Co ltd
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0841—Registering performance data
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3059—Digital compression and data reduction techniques where the original information is represented by a subset or similar information, e.g. lossy compression
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/141—Setup of application sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/04—Protocols for data compression, e.g. ROHC

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
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  • General Health & Medical Sciences (AREA)
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  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

The invention discloses an inter-group communication method for ships, which comprises a data sending end and a data receiving end, and the method comprises the following specific steps: firstly, a data sending end and a data receiving end complete handshake; the data sending end automatically detects the communication condition with the data receiving end, and when the data sending end and the data receiving end are in primary communication, the next step is carried out; otherwise, jumping to the step six; when data transmission is carried out for the first time, a data receiving end is informed through a data informing table, and the data sending end is about to send data contents and a data sending sequence; the data receiving end can conveniently establish a form in time, and the data is filled according to the sequence to finish the transmission of a basic data; if not, self-checking whether the data transmitted this time is the same as the data transmitted last time in sequence and format, if so, continuing to transmit, otherwise, reestablishing a data notification table to notify the data receiving end of the specific content of the data transmitted this time.

Description

Inter-group communication method for ships
Technical Field
The invention belongs to the field of ship communication, relates to a ship assembly communication technology, and particularly relates to an inter-group communication method for ships.
Background
At present, in the ship communication process, basic data transmission formats of components in a ship are fixed, namely, the sequence and the content of data transmission are fixed when data are transmitted each time, so that the problem is caused that when the ship has no certain basic parameters, the past space still needs to be transmitted according to the specified format and sequence, and therefore, not only is the data transmitted influenced, but also data communication resources are occupied, the whole working efficiency is influenced, and the need is small;
when data is transmitted, due to the limitation of a ship communication network, some data occupies a large memory and is troublesome to transmit, and an effective data compression format is lacked, so that the data to be transmitted can be compressed, the size of the data is reduced, and the data transmission speed is accelerated; in order to solve this technical drawback, a solution is now provided.
Disclosure of Invention
The invention aims to provide an inter-group communication method for ships.
The purpose of the invention can be realized by the following technical scheme:
an inter-group communication method for ships comprises a data sending end and a data receiving end, and the method comprises the following specific steps:
the method comprises the following steps: firstly, a data sending end and a data receiving end complete handshaking to achieve connection;
step two: the data sending end automatically detects the communication condition with the data receiving end, and when the data sending end and the data receiving end are in primary communication, the next step is carried out; otherwise, jumping to the step six;
step three: the data sending end firstly sends a data notification table to the data receiving end, and the data sending end also stores and backups the data notification table; the data notification table is a ship data name group and a corresponding transmission sequence of the current transmission, the ship data name group comprises a plurality of ship data names, and the ship data names are names of ship data to be transmitted by a data transmitting terminal; in particular, it can be represented by marking the ship data name group as Ci, i 1.. n; the ship data names can be main shaft rotating speed, engine oil pressure, fresh water temperature, engine oil temperature and battery voltage, and Ci sequentially represents the ship data names; simultaneously transmitting a corresponding transmission sequence to a data receiving end, and marking the transmission sequence as Xi, i is 1.. n; xi and Ci are in one-to-one correspondence, the specific value of Xi is from 1 to n, and each value only appears once; indicating that the corresponding ship data name Ci is the Xi transmission;
step four: the data receiving end receives and stores the data notification table of the data sending end, and simultaneously returns a received signal to the data sending end; the data sending end receives a received signal returned by the data receiving end;
step five: the data sending end compresses the target data value set according to a compression rule to obtain a compressed data value set, the compressed data value set corresponds to the target data value set one by one, and the compressed data value set is transmitted to the data receiving end, wherein the target data value set is a specific value corresponding to the ship data name set;
step six: the data receiving end receives the compressed data value set according to the data informing table, and the compressed data value set is in one-to-one correspondence with the ship data name set according to the ship data name set and the corresponding transmission sequence in the data informing table; unscrambling the compressed data value set into a target data value set according to an unscrambling rule; corresponding the target data values in the target data value set with the ship data names one by one to obtain complete data information transmitted at this time; finishing the data transmission and finishing the current step;
step seven: the data sending end can automatically check a data notification table of the ship data name group needing to be sent at this time;
step eight: when the data notification table of the ship data name group required to be sent at this time is consistent with the data notification table backed up by the ship data name group at the last time, repeating the fifth step to the sixth step;
step nine: when the data notification table of the ship data name group required to be sent at this time is inconsistent with the data notification table backed up by the ship data name group at the last time, the data sending end transmits a new data notification table to the data receiving end;
step ten: the data receiving end receives the new data notification table transmitted by the data transmitting end, replaces the original data notification table with the new data notification table, stores the new data notification table, and returns a received signal to the data transmitting end;
step eleven: and repeating the fifth step to the sixth step.
Further, the compression rule in the step five may be specifically expressed as:
s100: acquiring all target data value groups;
s200: selecting one target data value from the target data value group and compressing the target data value correspondingly;
s300: firstly, marking a target data value as M1, and acquiring a compression value Y1 corresponding to the target data value, wherein Y1 is a preset conversion value; determining a transmission value Q1 according to a correlation algorithm; the specific determination process is as follows:
s301: when M1/Y1 can be divided completely, Q1 is equal to M1/Y1; the value of the preset value Y1 can ensure that Q1 is less than 255; facilitating the transmission of the number by one byte;
s302: when M1/Y1 is not divisible;
in that
Figure BDA0002203052990000031
When it is taken
Figure BDA0002203052990000032
Wherein
Figure BDA0002203052990000033
Represents rounding after M1/Y1;
in that
Figure BDA0002203052990000034
The specific value of the transmission value is taken according to the times of transmitting the target data value, and when the transmission times are odd times, the specific value is taken
Figure BDA0002203052990000035
Otherwise get
Figure BDA0002203052990000036
In that
Figure BDA0002203052990000038
When it is taken
Figure BDA0002203052990000037
S303: obtaining a transmission value Q1;
s400: the transmission value Q1 is converted into a binary value, so that one byte of data can completely represent Q1, and the size of the transmission data is greatly reduced;
s500: marking Q1 represented by a binary number as a compressed data value;
s600: selecting the next target data value, repeating the steps S300-S500 to obtain all compressed data values and form a compressed data value set Qi; and simultaneously obtaining the corresponding preset conversion value group Yi.
Further, the compression rule in the step six may be specifically expressed as:
s10: when the data transmitting end transmits a data notification table to the data receiving end for the first time, the data transmitting end transmits a preset conversion value Yi corresponding to a ship data name group in the data notification table to the data receiving end;
s20: acquiring a transmitted compressed data value set Qi and acquiring a corresponding preset conversion value Yi;
s30: the target set of data values is obtained using Qi by Yi.
The invention has the beneficial effects that: when data transmission is carried out for the first time, a data receiving end is informed through a data informing table, and the data sending end is about to send data contents and a data sending sequence; the data receiving end can conveniently establish a form in time, and the data is filled according to the sequence to finish the transmission of a basic data; if the data transmission is not the first time, whether the sequence and the format of the data transmitted this time are the same as those of the data transmitted last time or not is self-checked, if so, the data are continuously transmitted, otherwise, a data informing table is reestablished to inform a data receiving end of the specific content of the data transmitted this time;
meanwhile, the target data value to be transmitted is compressed through the preset value Y1, the target data value is converted into the transmission value according to a certain rule and algorithm, and the transmission value is binarized, so that the original data of specific values to be transmitted can be converted and expressed by utilizing the size of one byte, the size of the transmission data is greatly compressed, the transmission efficiency is improved, and the data flow occupied by transmission can be saved; the invention is simple, effective and easy to use.
Detailed Description
An inter-group communication method for ships comprises a data sending end and a data receiving end, and the method comprises the following specific steps:
the method comprises the following steps: firstly, a data sending end and a data receiving end complete handshaking to achieve connection;
step two: the data sending end automatically detects the communication condition with the data receiving end, and when the data sending end and the data receiving end are in primary communication, the next step is carried out; otherwise, jumping to the step six;
step three: the data sending end firstly sends a data notification table to the data receiving end, and the data sending end also stores and backups the data notification table; the data notification table is a ship data name group and a corresponding transmission sequence of the current transmission, the ship data name group comprises a plurality of ship data names, and the ship data names are names of ship data to be transmitted by a data transmitting terminal; specific examples are that the ship data name group is marked as Ci, i ═ 1.. n; the ship data names can be main shaft rotating speed, engine oil pressure, fresh water temperature, engine oil temperature and battery voltage, and Ci sequentially represents the ship data names; simultaneously transmitting a corresponding transmission sequence to a data receiving end, and marking the transmission sequence as Xi, i is 1.. n; xi and Ci are in one-to-one correspondence, the specific value of Xi is from 1 to n, and each value only appears once; indicating that the corresponding ship data name Ci is the Xi transmission;
step four: the data receiving end receives and stores the data notification table of the data sending end, and simultaneously returns a received signal to the data sending end; the data sending end receives a received signal returned by the data receiving end;
step five: the data sending end compresses the target data value set according to a compression rule to obtain a compressed data value set, the compressed data value set corresponds to the target data value set one by one, and the compressed data value set is transmitted to the data receiving end, wherein the target data value set is a specific value corresponding to the ship data name set;
step six: the data receiving end receives the compressed data value set according to the data informing table, and the compressed data value set is in one-to-one correspondence with the ship data name set according to the ship data name set and the corresponding transmission sequence in the data informing table; unscrambling the compressed data value set into a target data value set according to an unscrambling rule; corresponding the target data values in the target data value set with the ship data names one by one to obtain complete data information transmitted at this time; finishing the data transmission and finishing the current step;
step seven: the data sending end can automatically check a data notification table of the ship data name group needing to be sent at this time;
step eight: when the data notification table of the ship data name group required to be sent at this time is consistent with the data notification table backed up by the ship data name group at the last time, repeating the fifth step to the sixth step;
step nine: when the data notification table of the ship data name group required to be sent at this time is inconsistent with the data notification table backed up by the ship data name group at the last time, the data sending end transmits a new data notification table to the data receiving end;
step ten: the data receiving end receives the new data notification table transmitted by the data transmitting end, replaces the original data notification table with the new data notification table, stores the new data notification table, and returns a received signal to the data transmitting end;
step eleven: repeating the fifth step to the sixth step;
the compression rule in the step five may be specifically expressed as:
s100: acquiring all target data value groups;
s200: selecting one target data value from the target data value group and compressing the target data value correspondingly;
s300: firstly, marking a target data value as M1, and acquiring a compression value Y1 corresponding to the target data value, wherein Y1 is a preset conversion value; determining a transmission value Q1 according to a correlation algorithm; the specific determination process is as follows:
s301: when M1/Y1 can be divided completely, Q1 is equal to M1/Y1; the value of the preset value Y1 can ensure that Q1 is less than 255; facilitating the transmission of the number by one byte; when Y1 is not completely removed, other data transmission can be selected nearby, and no error in precision can be caused when the device is used in the field of ships;
s302: when M1/Y1 is not divisible;
in that
Figure BDA0002203052990000061
When it is taken
Figure BDA0002203052990000062
Wherein
Figure BDA0002203052990000063
Represents rounding after M1/Y1;
in that
Figure BDA0002203052990000064
The specific value of the transmission value is taken according to the times of transmitting the target data value, and when the transmission times are odd times, the specific value is taken
Figure BDA0002203052990000065
Otherwise get
Figure BDA0002203052990000066
In that
Figure BDA0002203052990000067
When it is taken
Figure BDA0002203052990000068
S303: obtaining a transmission value Q1;
s400: the transmission value Q1 is converted into a binary value, so that one byte of data can completely represent Q1, and the size of the transmission data is greatly reduced;
s500: marking Q1 represented by a binary number as a compressed data value;
s600: selecting the next target data value, repeating the steps S300-S500 to obtain all compressed data values and form a compressed data value set Qi; simultaneously obtaining a corresponding preset conversion value group Yi;
the compression rule in the step six may be specifically expressed as:
s10: when the data transmitting end transmits a data notification table to the data receiving end for the first time, the data transmitting end transmits a preset conversion value Yi corresponding to a ship data name group in the data notification table to the data receiving end;
s20: acquiring a transmitted compressed data value set Qi and acquiring a corresponding preset conversion value Yi;
s30: the target set of data values is obtained using Qi by Yi.
When data transmission is carried out for the first time, a data receiving end is informed through a data informing table, and the data sending end is about to send data contents and a data sending sequence; the data receiving end can conveniently establish a form in time, and the data is filled according to the sequence to finish the transmission of a basic data; if the data transmission is not the first time, whether the sequence and the format of the data transmitted this time are the same as those of the data transmitted last time or not is self-checked, if so, the data are continuously transmitted, otherwise, a data informing table is reestablished to inform a data receiving end of the specific content of the data transmitted this time;
meanwhile, the invention also compresses the target data value to be transmitted through the preset value Y1, converts the target data value into the transmission value according to a certain rule and algorithm, and binarizes the transmission value, so that the original data of specific values to be transmitted can be converted and expressed by utilizing the size of one byte, thereby greatly compressing the size of the transmission data, improving the transmission efficiency and saving the data flow occupied by transmission.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.

Claims (3)

1. An inter-group communication method for ships comprises a data sending end and a data receiving end, and is characterized in that the method comprises the following specific steps:
the method comprises the following steps: firstly, a data sending end and a data receiving end complete handshaking to achieve connection;
step two: the data sending end automatically detects the communication condition with the data receiving end, and when the data sending end and the data receiving end are in primary communication, the next step is carried out; otherwise, jumping to the step six;
step three: the data sending end firstly sends a data notification table to the data receiving end, and the data sending end also stores and backups the data notification table; the data notification table is a ship data name group and a corresponding transmission sequence of the current transmission, the ship data name group comprises a plurality of ship data names, and the ship data names are names of ship data to be transmitted by a data transmitting terminal; in particular, it can be represented by marking the ship data name group as Ci, i 1.. n; the ship data names can be main shaft rotating speed, engine oil pressure, fresh water temperature, engine oil temperature and battery voltage, and Ci sequentially represents the ship data names; simultaneously transmitting a corresponding transmission sequence to a data receiving end, and marking the transmission sequence as Xi, i is 1.. n; xi and Ci are in one-to-one correspondence, the specific value of Xi is from 1 to n, and each value only appears once; indicating that the corresponding ship data name Ci is the Xi transmission;
step four: the data receiving end receives and stores the data notification table of the data sending end, and simultaneously returns a received signal to the data sending end; the data sending end receives a received signal returned by the data receiving end;
step five: the data sending end compresses the target data value set according to a compression rule to obtain a compressed data value set, the compressed data value set corresponds to the target data value set one by one, and the compressed data value set is transmitted to the data receiving end, wherein the target data value set is a specific value corresponding to the ship data name set;
step six: the data receiving end receives the compressed data value set according to the data informing table, and the compressed data value set is in one-to-one correspondence with the ship data name set according to the ship data name set and the corresponding transmission sequence in the data informing table; unscrambling the compressed data value set into a target data value set according to an unscrambling rule; corresponding the target data values in the target data value set with the ship data names one by one to obtain complete data information transmitted at this time; finishing the data transmission and finishing the current step;
step seven: the data sending end can automatically check a data notification table of the ship data name group needing to be sent at this time;
step eight: when the data notification table of the ship data name group required to be sent at this time is consistent with the data notification table backed up by the ship data name group at the last time, repeating the fifth step to the sixth step;
step nine: when the data notification table of the ship data name group required to be sent at this time is inconsistent with the data notification table backed up by the ship data name group at the last time, the data sending end transmits a new data notification table to the data receiving end;
step ten: the data receiving end receives the new data notification table transmitted by the data transmitting end, replaces the original data notification table with the new data notification table, stores the new data notification table, and returns a received signal to the data transmitting end;
step eleven: and repeating the fifth step to the sixth step.
2. The method as claimed in claim 1, wherein the compression rule in the fifth step is as follows:
s100: acquiring all target data value groups;
s200: selecting one target data value from the target data value group and compressing the target data value correspondingly;
s300: firstly, marking a target data value as M1, and acquiring a compression value Y1 corresponding to the target data value, wherein Y1 is a preset conversion value; determining a transmission value Q1 according to a correlation algorithm; the specific determination process is as follows:
s301: when M1/Y1 can be divided completely, Q1 is equal to M1/Y1; the value of the preset value Y1 can ensure that Q1 is less than 255; facilitating the transmission of the number by one byte;
s302: when M1/Y1 is not divisible;
in that
Figure FDA0002203052980000021
When it is taken
Figure FDA0002203052980000022
Wherein
Figure FDA0002203052980000023
Represents rounding after M1/Y1;
in that
Figure FDA0002203052980000024
The specific value of the transmission value is taken according to the times of transmitting the target data value, and when the transmission times are odd times, the specific value is taken
Figure FDA0002203052980000025
Otherwise get
Figure FDA0002203052980000026
In that
Figure FDA0002203052980000031
When it is taken
Figure FDA0002203052980000032
S303: obtaining a transmission value Q1;
s400: the transmission value Q1 is converted into a binary value, so that one byte of data can completely represent Q1, and the size of the transmission data is greatly reduced;
s500: marking Q1 represented by a binary number as a compressed data value;
s600: selecting the next target data value, repeating the steps S300-S500 to obtain all compressed data values and form a compressed data value set Qi; and simultaneously obtaining the corresponding preset conversion value group Yi.
3. The method of claim 1, wherein the compression rule in the sixth step is as follows:
s10: when the data transmitting end transmits a data notification table to the data receiving end for the first time, the data transmitting end transmits a preset conversion value Yi corresponding to a ship data name group in the data notification table to the data receiving end;
s20: acquiring a transmitted compressed data value set Qi and acquiring a corresponding preset conversion value Yi;
s30: the target set of data values is obtained using Qi by Yi.
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