A Method of Improving Communication Refreshing Speed

Abstract

The invention discloses a method for improving the communication refresh rate, which is applied to a serial port communication system. The serial port communication system includes a host computer and several lower computers, and the upper computer and the lower computers are connected by serial ports. The method is for abnormal The lower computer no longer confirms frequently, but increases the corresponding polling times according to the number of timeouts and then communicates with the abnormal lower computer. Communicate again, and after the communication is restored, the communication will be reduced gradually until it is normal according to the opposite exception confirmation rule. This will not only increase the speed of communication refresh, but also ensure that the lower computer can recover from abnormalities in the later period or the upper computer can confirm that the status is normal and improve serial communication. The communication rate is low.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for improving communication refreshing speed. Background technique [0002] Communication abnormalities lead to equipment failures that cannot be discovered in time, which not only affects the stability of equipment operation, but also causes great safety hazards. The communication method of sequential transmission asks each lower computer sequentially whether it needs its service, and provides the service when it is available. After the service is completed, it asks the next lower computer, and then repeats itself continuously. Then when a lower computer communicates abnormally, the response timeout will Going to the next one, the communication refresh speed is too slow, it is unrealistic not to deal with the abnormal lower computer directly, because the lower computer may recover abnormally or the staff has already repaired it, so a reasonable communication refre...

AI Technical Summary

Problems solved by technology

[0002] Communication abnormalities lead to equipment failures that cannot be discovered in time, which not only affects the stability of equipment operation, but also causes great safety hazards. The communication method of sequential transmission asks each lower computer sequentially whether it needs its service, and provides the service when it is available. After the service is completed, it asks the next lower computer, and then repeats itself continuously. Then when a lower computer communicates abnormally, the response timeout will Proceed to the next one, so the communication refresh speed is too slow. It is unrealistic to not deal with the abnormal lower computer directly, because the lower computer may recover abnormally or the staff has already repaired it. Therefore, a reasonable communication refresh method is needed.

Images