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Guarantee method for wireless transmission of key data of EMU 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 inability to transmit information, inability to achieve both and switch between the US GPS global positioning system and Beidou satellite navigation system, and inability to meet EMU development needs and other issues, to achieve the effect of high cost performance and efficiency, enhanced timeliness and reliability

Active Publication Date: 2018-04-03
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 of the Chinese Beidou satellite navigation system, and it is impossible to achieve both the US GPS global positioning system and the Beidou satellite navigation system. To meet the development needs of the EMU industry and the technical problem that the mature AP wireless network technology has not been widely used in the field of wireless transmission of EMU key data, the present invention provides a method for ensuring wireless transmission of EMU key data based on a dual-mode navigation system

Method used

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  • Guarantee method for wireless transmission of key data of EMU based on dual-mode navigation system
  • Guarantee method for wireless transmission of key data of EMU based on dual-mode navigation system
  • Guarantee method for wireless transmission of key data of EMU 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 key data wireless transmission guarantee method for EMUs based on the dual-mode navigation system belongs to the field of wireless communication guarantee methods for high-speed EMUs. The method can realize the AP wireless network and GPRS by adding the communication equipment of the AP wireless network and the BDS Beidou navigation system to the train respectively. The priority order of the three communication functions of the network and BDS Beidou navigation system two-way short message transmits the key data of the train to other EMUs or the ground operation dispatching command center, giving full play to the high cost performance and efficiency of the AP wireless network and the BDS Beidou navigation The communication advantages of the system have greatly enhanced the timeliness and reliability of wireless transmission of key data of EMUs. In this method, data that does not require high real-time performance is only transmitted through the WIFI of the AP wireless network when the EMU vehicle enters the station or enters the garage for maintenance, which can alleviate the pressure of data transmission.

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 ...

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Application Information

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Patent Type & Authority Patents(China)
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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