Motor train unit key data wireless transmission protection method based on dual-mode navigation system

A technology of navigation system and key data, applied in the direction of location information-based services, signal transmission systems, instruments, etc., can solve the problem of unable to meet the development needs of EMUs, unable to achieve both the US GPS global positioning system and the Beidou satellite navigation system and switching. , inability to transmit information, etc.

Active Publication Date: 2015-09-23
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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Problems solved by technology

[0042] In order to solve the problem that the existing EMU key data transmission methods rely heavily on wireless mobile networks such as GPRS and its ground base station systems all over the country, once the train is running in an environment without GPRS wireless mobile network signal coverage, it is impossible to transfer any The information is transmitted to other EMUs or the ground operation dispatching command center; at present, the EMUs rely solely on the US GPS positioning system instead

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  • Motor train unit key data wireless transmission protection method based on dual-mode navigation system
  • Motor train unit key data wireless transmission protection method based on dual-mode navigation system
  • Motor train unit key data wireless transmission protection method based on dual-mode navigation system

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Embodiment Construction

[0095] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0096] Such as figure 2 As shown, the EMU key data wireless transmission guarantee method based on the dual-mode navigation system of the present invention includes the following steps:

[0097] Step 1: Install a remote data wireless transmission device for the EMU train. The device has GPS navigation and positioning functions, BDS Beidou navigation and positioning functions, GPRS wireless mobile network and AP wireless network data channels, and are separately debugged so that they can all work independently;

[0098] Step 2: Determine whether the signal strength index of the current AP wireless network is greater than or equal to the preset value, if so, perform step 3, otherwise, perform step 4;

[0099] Step 3: The on-vehicle communication device that enables the AP wireless network is connected to the ground equipment of the AP wireless network along t...

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Abstract

The invention relates to a motor train unit key data wireless transmission protection method based on a dual-mode navigation system, which belongs to the field of a high-speed motor train unit wireless communication protection method. The method comprises the following steps: respectively additionally arranging an AP wireless network and a communication device of a BDS Beidou navigation system for a motor train, respectively transmitting train key data to other motor train units or ground operation dispatching command centers according to bi-directional short messages of a priority sequence of AP wireless network, GPRS network and BDS Beidou navigation system, so that high cost performance and high efficiency of the AP wireless network and the communication advantages of BDS Beidou navigation system can be sufficiently utilized, and the wireless transmission timeliness and reliability of the motor train unit key data can be greatly improved. By adopting the method, data with lower requirement on timeliness is only transmitted by virtue of WIFI of AP wireless network when the motor unit train enters a station or enters a garage, and the data transmission pressure can be alleviated.

Description

technical field [0001] The invention belongs to the field of wireless communication guarantee methods for high-speed train sets, and in particular relates to a guarantee method for wireless transmission of key data of train sets based on a dual-mode navigation system. Background technique [0002] The dynamic information of train orientation based on satellite navigation and positioning is one of the important information to ensure the safe operation of EMUs. In addition to providing services such as precise positioning, speed calculation and train timing for EMUs, the real-time information of the leading and trailing trains can be obtained through satellite positioning. Position information can also determine the speed of the leading car and the trailing car, whether the distance between the two has changed, and whether the running direction and speed are consistent, so as to confirm the integrity of the train in operation. After comprehensively considering the train speed ...

Claims

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Application Information

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IPC IPC(8): G08C17/02H04W4/02
Inventor 王金田吕龙单正辉关吉瑞刘国梁牛亚男王文勇许杰聂东研李强刘长远孙正阳董维金
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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