Multi-CPU communication data detection method and system

Abstract

The invention discloses a multi-CPU system communication data detection method and system. The method comprises the steps that a sending CPU is controlled to obtain communication data in a memory and modify the communication data; when the communication data is non-state quantity data, the communication data is sent to a receiving CPU according to a preset period, the total receiving number of the receiving CPU is accumulated, and a receiving CPU data table is updated; when the communication data is state quantity data, the communication data is continuously sent to the receiving CPU according to a preset time interval, and whether the communication data is data required by the receiving CPU is judged; and if so , the receiving CPU data table is updated, or if not, the communication data is discarded, the error number and the total receiving number of the receiving CPU are accumulated, and the receiving CPU data table is updated. Under the premise that a wiring layout is not changed, CPU communication interaction data under various working conditions are tested and verified, and no interference is caused to normal data; and the detection method is real and effective and can be conveniently developed in various application environments of a power system protection device.

Description

technical field [0001] The invention relates to the field of electric equipment communication data, in particular to a multi-CPU communication data detection method and system. Background technique [0002] In the field of power system protection and control, in order to ensure the reliability of device operation, multi-CPU cooperative work has become a common application method. It is necessary to fully verify the internal communication management and data exception handling between multiple CPUs to ensure power system protection and control. The control device will not malfunction in any working environment. Due to the complex operating environment of the protection and control device, in order to ensure the reliability of the overall operation of the device, all internal communication data are directly connected through the bus, and there is a lack of verification means for the effectiveness of internal communication data processing. In various engineering applications, ...

AI Technical Summary

Problems solved by technology

[0004] Since the internal communication data of each CPU only interacts between the boards and is invisible to the outside, the existing technical solutions have the following defects: 1. Through the indirect verification of external protection actions or liquid crystal display, it is impossible to visually check the correctness of the internal communication data. Second, the existing technical solutions need to build a complex test environment, which is time-consuming and laborious; Third, it cannot simulate all normal or abnormal communication conditions, and the internal data acceptance is not sufficient, which may also affect other functions of the CPU

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