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Scene depicting method for time sequence simulation analysis of embedded system

An embedded system, simulation analysis technology, applied in design optimization/simulation, software simulation/interpretation/simulation, program control design, etc. model work, improve accuracy, and improve the effect of certainty

Pending Publication Date: 2021-03-16
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the process of modeling and simulation, because the operation process of the embedded system is relatively complicated, it is difficult to accurately restore the system through simulation simply by modeling interrupts, tasks, scheduling algorithms, etc. in the real-time system. prototype, and may cause unpredictable changes to the simulation process when modifying the model

Method used

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  • Scene depicting method for time sequence simulation analysis of embedded system

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0045] The invention proposes a real-time system simulation operating scene model, which is used to constrain the system simulation process, improve the accuracy of the real-time system simulation model, and make the model closer to the real system. Since the embedded system is limited by many factors in the actual operation process, the execution process is relatively complicated, and it is difficult to accurately restore the operation process of the real system only according to the basic configuration information of the general interrupt module and task module, resulting in the reduction of the practicability of the simulation results , so an external control method is needed to fine-tune the simulation process. Unify all the components in the system as part of the simulation operation, and carefully design the execution actions of each component, so...

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Abstract

The invention discloses a scene depicting method for time sequence simulation analysis of an embedded system. The scene depicting method is used for carrying out finer control on an abstracted system.According to the method, interruption arrival time is provided, activation time can be specified for periodic interruption, arrival time, arrival frequency, average time of multiple times of arrival,arrival time interval and execution after each interruption can be set for aperiodic interruption, and interruption switching opportunity is also provided. And the interrupt is allowed to perform a certain operation on the interrupt after the execution of a certain task is finished. Task partial order relation setting and state circulation and migration control under a state machine are providedfor tasks. The simulation process is refined in an external control mode, a larger design space is provided for program designers, the model can be closer to a real system, and the determinacy of thesystem can be better improved through the obtained simulation result.

Description

technical field [0001] The invention belongs to the technical field of embedded systems, and in particular relates to a scene description method for simulation analysis. Background technique [0002] The relationship between embedded system (Embedded System) and people is getting closer and closer, and 95% of microprocessors in the world are used in embedded systems. Embedded systems are widely used in a wide range of applications. In some fields with high real-time requirements, whether the timing characteristics of embedded systems meet the design requirements will have a key impact on the operation of real-time systems. Timing exceptions may cause task execution failures, and even cause system damage. destructive impact. Therefore, ensuring the correctness of embedded software timing design and implementation is an important task of embedded software development. As the scale and complexity of embedded systems continue to increase, it has gradually become a reasonable c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/455G06F9/48G06F30/20
CPCG06F9/45508G06F9/4812G06F30/20
Inventor 朱怡安李联齐宗龙史先琛
Owner NORTHWESTERN POLYTECHNICAL UNIV
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