A reliable data transmission method and upgrading method based on network communication protocol

Abstract

A network communication protocol-based reliable data transmission method includes the following steps: (1) a control end sends a data transmission request, and judges whether a node satisfies data transmission conditions, and if yes, shifting to Step (2), and otherwise finishing data transmission; (2) data transmission: the control end divides a data file to be sent into blocks, and sends each group of data blocks in sequence, after the node receives the group of data blocks, a checking instruction of the group of data blocks sent by the control end is waited for to perform checking of a check code: (a) if checking is successful, the group of data blocks are stored and notification is given, and sending of the next group of data blocks is continued till sending of all the data blocks is completed; and (b) if checking fails, a notification is given to the control end, sending of the current data block is continued till checking is successful and storage is carried out, and the control end continues sending of the next group of data blocks, if N times of sending is performed repeatedly and checking still fails, data transmission finishes. Through confirmation before data transmission, block sending and a retransmission mechanism, transmission of all data can be reliably guaranteed.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a data transmission and upgrading technology, in particular to a reliable data transmission and upgrading method. Background technique [0002] At present, when most applications or devices communicate, it is necessary to ensure the reliable transmission of data, that is, to ensure the reliability of data transmission. For example, protocols such as TCP / IP can only guarantee the reliability of a single data packet transmission. In order to recover the error data packet, the data needs to be retransmitted from the source, which may cause the data packets to be out of order, and cannot guarantee the reliability and integrity of the entire file data transmission. CAN bus communication technology is widely used in comprehensive automation control systems in various fields, and its advantages such as high reliability, strong anti-interference, simple development, low cost, short f...

AI Technical Summary

Problems solved by technology

In addition, when using the above-mentioned TCP protocol or CAN bus to upgrade components, during the process of device component data transmission, if the downloaded data transfer file data is not the data transfer file data required by the device component data transfer or the transferred component data is not When it is complete, the equipment after data transmission not only cannot complete the data transmission, but also loses its original functions at the same time, which cannot guarantee the normal use of the equipment, especially for large and expensive medical imaging equipment such as PET and CT. When the components are upgraded, unexpected situations occur, and the upgrade is unsuccessful, which often leads to the inability to put them into normal medical use, which will bring various disadvantages and losses to the hospital and patients.

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