A polling communication method based on cpci backplane
A communication method and backplane technology, applied in the field of vehicle communication, can solve problems such as confusion, low reliability and stability, and data transmission errors, and achieve the effects of ensuring correctness, improving reliability and stability, and avoiding data errors
Active Publication Date: 2020-05-22
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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[0005] The purpose of the present invention is to provide a kind of polling communication method based on CPCI backplane, to solve the traditional polling mode communication method prone to data transmission error and confusion, the technical problem that reliability and stability are lower
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[0030] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.
[0031] Embodiments of the present invention provide a CPCI backplane-based polling communication method, such as figure 1 As shown, the method includes: Step 1 and Step 2. Step 1 is the data transmission step from the first communication unit to the second communication unit, and step 2 is the data transmission step from the second communication unit to the first communication unit.
[0032] In step 1, the ...
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The invention discloses a polling communication method based on a CPCI backboard and belongs to the field of vehicle communication technology. Through the method, the technical problem that a data transmission error and a disorder are prone to occurrence through a traditional rolling mode communication method, and consequently reliability and stability are low is solved. The polling communication method based on the CPCI backboard comprises the steps that a first communication unit writes data into a first storage unit according to a rolling cycle after data in the first storage unit is read, a transmission control unit reads the data written into the first storage unit and transmits the data to a second storage unit when a second communication unit does not perform data reading, and the second communication unit reads the data from the second storage unit according to the rolling cycle.
Description
technical field [0001] The invention relates to the technical field of vehicle communication, in particular to a polling communication method based on a CPCI backplane. Background technique [0002] With the development of high-speed trains, safety and comfort, more and more status information, control information and diagnostic information need to be transmitted between rolling stock and electrical equipment. Because the train communication network (TrainCommunication Network, TCN) has unique advantages in media control mode, communication service and real-time performance, it has been widely used. In related application projects, the information collected by single boards such as MVB board, WTB board, IO board, and event recording board all interact with the CPU main control board through the CPCI backplane bus in the chassis. The master device, and other boards are slave devices. [0003] In the general polling-based CPCI bus communication mode, both the CPU main contro...
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IPC IPC(8): G06F13/16
CPCG06F13/1663G06F13/1673
Inventor 刘群欣唐军陆琦周学勋蒋国涛全清华任懋华张泰然樊婷
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST