Multi-task control method for intelligent meter reading terminal

Abstract

The invention relates to a multi-task control method for an intelligent meter reading terminal. The multi-task control method for the intelligent meter reading terminal comprises a first step of establishing tasks, respectively allocating different priorities to all the tasks, and enabling each task to be independent of other tasks, a second step of dividing the processing process of the tasks into 5 states including a dormant state, a ready state, an operation state, a waiting state and an interrupted state, a third step of detecting the state of each task, enabling the task which has the highest priority and is in the ready state to be a current task, enabling the current task to operate in the operation state, and enabling the current task to enter the dormant state after operation of the current task is finished. According to the multi-task control method for the intelligent meter reading terminal, the priority of each task of the intelligent meter reading terminal is established, tasks are made to conduct the 5 states according to the sequence of the priorities based on the five states, multiple tasks can be processed simultaneously, a CPU is made can be used to the maximum extent, the processing speed is higher, and reliability is higher.

Description

Technical field: [0001] The invention relates to the field of electric energy meter control, in particular to a multi-task control method for an intelligent meter reading terminal. Background technique: [0002] The smart energy meter is a metering device that measures according to the peak and valley periods. At the same time, it can also reflect the current load, the time of the maximum load, phase failure and voltage loss, etc. In order to transmit these data back to the electric power department in a timely and effective manner, an intelligent meter reading terminal is needed to complete this work. This kind of smart meter reading terminal needs many functions, such as: in addition to reporting the data content of the report, it also needs to process some meter data and display it on the local device panel. For example, it can display the frozen value of the meter reading at zero every day, and also It can display power and so on, so many tasks need to be processed at t...

AI Technical Summary

Problems solved by technology

[0004] First, the interruption may not be responded in time, and the processing time is too long, which is not allowed in the case of meter reading

[0005] Second, because there are too many tasks on the smart meter reading terminal, there are many possibilities to consider. Therefore, if the CPU resource scheduling of the single-chip microcomputer is not properly scheduled, a deadlock will occur, which will reduce the reliability of the software and cause the smart meter reading terminal to fail. high failure rate

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