Program Scheduling Method of Data Acquisition Monitor

Abstract

The invention discloses a program scheduling method of a data acquisition monitor. The method comprises the following steps of: carrying out program scheduling on the data acquisition monitor by adoption of a real-time kernel; obtaining and grading importance degrees of program modules; and scheduling and executing the program modules of the data acquisition monitor by the real-time kernel by adoption of a principle of preferably executing the program modules with higher grades according to the grades of the program modules. According to the method, the real-time kernel is imported to the data acquisition monitor, so that functions of the real-time kernel are adopted to carry out program scheduling on the data acquisition monitor; and the program modules of the data acquisition monitor are graded and program scheduling is carried out according to the grades from high to low, so that the method can respond the operation requirements of each program in real time, and the operation safety and reliability can be effectively improved.

Description

technical field [0001] The invention specifically relates to a program scheduling method for a data acquisition monitor. Background technique [0002] With the development of economy and technology and the improvement of people's living standards, the requirements for the reliability and timeliness of electrical equipment are getting higher and higher. [0003] Data acquisition monitors are widely used in power grids and play an important role. The programs of the existing data acquisition monitors are all designed as traditional and commonly used front-end and back-end systems. After the initialization is completed, the functions of the corresponding modules are called in turn in the main loop to complete the corresponding functions, and each function module circulates infinitely according to the sequence run as figure 1 As shown, this part is the background behavior (background). The interrupt service program handles abnormal events, such as the interrupt when the timer...

AI Technical Summary

Problems solved by technology

Because when a module needs to run, it cannot run immediately, it must wait until other modules run and cycle to itself before running. The response time of each module depends on the execution time of the entire loop, but the entire running time of the main loop is not a Fixed value, the exact running time of each module is not fixed, and if the program is modified, the cycle time will also be affected

[0004] Each module in the data acquisition monitor has different requirements for real-time performance. The data collection and processing monitoring module, the current time synchronization module, and the communication module have higher requirements for real-time performance. Their real-time nature, for example, the processing time of the data card processing module is very long, up to tens of seconds, during which the data acquisition and monitoring module cannot run on time and accurately, so that the data will be lost, and the monitoring function will also be lost. There are hidden dangers, and if the computer management system issues a copy command at any time during the period, it will not be able to respond in time

The processing time of the image verification module is also very long, and it will face the same problem. Other modules will not be able to run, and important functions will be lost during this period.

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