Train data transmission method and system

A vehicle-mounted data and transmission method technology, which is applied to the control system of the transportation center, transportation and packaging, railway car body parts, etc., can solve the problem of traffic waste, reduce data volume, improve data transmission efficiency, and reduce development costs Effect

Active Publication Date: 2017-02-15
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

High-frequency data transmission

Method used

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  • Train data transmission method and system
  • Train data transmission method and system

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Experimental program
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Embodiment 1

[0035] like figure 1 As shown, the train on-board data transmission method of the present embodiment, the steps are as follows: S1. Collect train data according to the preset sampling period; S2. Analyze the train data into data items, and determine the frequency of the data items according to the preset data classification method Level; S3. According to the data time window preset for the frequency level, pack the changed data items belonging to the same frequency level in the data time window into a data packet, and send the data packet.

[0036] In this embodiment, the train data in step S1 includes the data of the locomotive network control system, the data of the on-board safety protection system of the locomotive collected by Ethernet, and the data of the train operation control recording device.

[0037] In this embodiment, the data classification method preset in step S2 includes: pre-statistically analyzing the historical data of the train data, determining the change...

Embodiment 2

[0045] The on-board data transmission method of the present embodiment is basically the same as the first embodiment, except that the specific implementation of step S3 in this embodiment is: S3.2.1. Initialize the data time window; S3.2.2. Acquire the data time window Data items of all sampling periods in the data time window, and eliminate duplicate data in the data time window; S3.2.3. Pack the data items in the data time window into data packets, and send the data packets. Repeated data refers to repeated data determined in units of sampling periods.

[0046] In this embodiment, the data time window is a fixed window, and it is not possible to close the data time window in advance, and still use figure 2 The data shown are shown as examples. For data item 3, data item 4, and data item 5 of the medium frequency level, the initial data time window is 3 sampling periods, and within this data time window, data item 3 of sampling period 1, sampling period 2, and sampling peri...

Embodiment 3

[0048] The on-board data transmission method of this embodiment is basically the same as that of the second embodiment, the difference lies in the judgment of repeated data, which refers to repeated data determined in units of data items. also with figure 2 As an example, for data item 3, data item 4, and data item 5 of the medium frequency level, after initializing the data time window, among the data obtained in sampling period 1 and sampling period 2, data item 3 and data item 4 are the same , data item 5 is different, then data item 3 and data item 4 in the data sampling period 2 are deduplicated. However, among the data obtained in the sampling period 3 and the sampling period 2, each data item is the same, and is judged as duplicate data, and is deleted. After the duplicate data is deleted, the data in the data time window is: (1: C, D, E; 2: -, -, E1), where the numbers "1" and "2" are the data time, and "-" is the account digits. Compared with Embodiment 2, in this...

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Abstract

The invention discloses a train data transmission method and system. The method comprises the following steps of: S1, acquiring train data according to a preset sampling period; S2, analyzing the train data into data items, and determining frequency grades of the data items according to a preset data classification method; and S3, packaging the data items which belong to a same frequency grade and change in a data time window preset for the frequency grades according to the data time window into a data package, and sending the data package. The system comprises a data acquisition module, a data analysis and sorting module and a data packaging and sending module. Being free of adding extra equipment and modifying the existing vehicle-mounted equipment interfaces of the trains, the method and system are simple to realize, low in development cost and short in scene transformation period, and is capable of effectively reducing the data transmission amount of CMD systems, effectively reducing the data transmission cost and enhancing the data transmission efficiency.

Description

technical field [0001] The invention relates to the field of train on-board data processing, in particular to a train on-board data transmission method and system. Background technique [0002] In order to adapt to the continuous development of information technology and intelligent technology, and improve the efficiency of locomotive remote monitoring and fault diagnosis, China Railway Corporation began to deploy the CMD system (Chinese locomotive remote Monitoring and Diagnosis system, Chinese locomotive remote monitoring and diagnosis system). The system is composed of vehicle subsystem, data transmission subsystem and ground comprehensive application subsystem. The on-board subsystem is mainly composed of LDP (Locomotive onboard general Data monitoring Platform, locomotive onboard comprehensive information monitoring device) device, which completes data collection, data processing, data recording, data transmission and dumping, as well as locomotive positioning and vehic...

Claims

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Application Information

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IPC IPC(8): B61L27/00
CPCB61L27/40
Inventor 文林王雨刘黎明加玉涛熊昱凯黄龙袁清华
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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