Data switching device and data switching method for train operation monitoring
A technology for train operation monitoring and data replacement, applied in the field of data transmission, can solve problems such as data loss, achieve the effects of reducing file size, reducing file transmission time, and improving storage speed
Active Publication Date: 2018-08-17
HUNAN CRRC TIMES SIGNAL & COMM CO LTD
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If the wireless transmission device has data to send to the LKJ2000 data switching device at this time, but is transmitting data to the LKJ2000 host at this time, the data received in the LKJ2000 data switching device will be lost
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[0025] The above-mentioned features and advantages of the present invention can be better understood after reading the detailed description of the embodiments of the present disclosure in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale, and components with similar related properties or characteristics may have the same or similar reference numerals.
[0026] Embodiment of the data replacement device for train operation monitoring
[0027] figure 1 The principle of the embodiment of the data replacement device for train operation monitoring of the present invention is shown. See figure 1 , the data replacement device in this embodiment includes: a main control replacement module 1 and a data cache module 2 , wherein the data cache module 2 is connected to the main control replacement module 1 .
[0028] The main control replacement module 1 communicates with the external wireless communication device 3 (TSC) via Ether...
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The invention discloses a data replacement device for train operation monitoring and a data replacement method thereof, which can reduce data transmission pressure, reduce file transmission time, and avoid the problem of retransmission caused by transmission interruption. Its technical solution is: adopting double buffering queues for caching, and realizing synchronous reception, decompression, and storage. Keep record of the breakpoint location and file information of the file, and periodically send the breakpoint file information to the ground reloading server. After the communication resumes, after the switching device shakes hands with the switching server, the switching server receives the file information of the breakpoint, and then resumes the file transmission at the breakpoint. The main control replacement module of the data replacement device transfers the data to the data transfer module, and the data transfer module performs replacement data with the host computer of the train operation monitoring system through the bus, and the main control replacement module receives the ground data through Ethernet at the same time. Provided on-board data files, the data replacement device for train operation monitoring will not lose the received data.
Description
technical field [0001] The invention relates to a data transmission technology, in particular to a device and method for data exchange between a wireless communication device and a host computer of a train operation monitoring system. Background technique [0002] The previous LKJ2000 data replacement device has the function of receiving the data transmitted by the wireless communication device through the Ethernet, and forwarding the data to the LKJ2000 host at the same time, so as to realize the function of data replacement and program replacement. [0003] When transferring data with a wireless communication device, due to the large amount of data, it takes a long time to transfer the file. At the same time, in practical applications, the wireless communication is often disconnected due to the impact of the environment, resulting in the entire file needing to be retransmitted, resulting in the long-term failure to complete the file. transmission and occupy the wireless ch...
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IPC IPC(8): B61L27/00H04L29/08
CPCH04L67/06B61L27/50
Inventor 樊亮王业流唐林阳亦斌肖立志欧盛芬夏伟叶理辉郑鸿昌冯亮
Owner HUNAN CRRC TIMES SIGNAL & COMM CO LTD