Sub-Control Circuit Power Cutoff for Major Error Isolation
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Solution Overview
Problem
Existing distributed control systems lack sufficient mechanisms for detecting and responding to minor and major errors in sub-boards, leading to potential operational instability and process delays.
Innovation Solution
A distributed control device and system that includes a sub-control circuit with minor and major error output circuits, a management control circuit, and a switching circuit to manage power supply based on error signals, ensuring stable operation by stopping power supply to the sub-control circuit in case of major errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If continuous monitoring of sub-board status is implemented, then operational stability is improved, but system complexity increases
Solution Approach 1:
The monitoring system is segmented into independent error detection modules (first and second error output circuits) that operate autonomously. Each module has dedicated error detection logic and output pathways, allowing continuous monitoring without requiring complex centralized control. This modular segmentation maintains operational stability while managing system complexity through functional independence.
Solution Approach 2:
The sub-board's error output circuits autonomously detect and signal errors without requiring external intervention or complex processing. Each circuit independently monitors its assigned parameters, generates error signals when thresholds are exceeded, and sets corresponding error flags, enabling self-service error monitoring that reduces overall system complexity while maintaining continuous surveillance.
2Productivity
If power supply is continuously supplied to sub-control circuit, then operational efficiency is improved, but energy waste occurs when major errors occur
Solution Approach 1:
The system implements feedback control through the second error output circuit that monitors major error conditions. When a major error is detected, the error signal triggers a feedback mechanism that controls the power supply switching circuit to interrupt power to the sub-board, preventing continued operation and energy consumption during faulty states. This feedback loop maintains operational efficiency during normal conditions while eliminating energy waste during errors.
Solution Approach 2:
The power supply to the sub-control circuit is made dynamic rather than static. The power supply switching circuit adjusts power delivery based on real-time error status detected by the second error output circuit. During normal operation, full power is supplied for optimal efficiency; upon detecting major errors, power is dynamically reduced or interrupted, adapting the energy consumption to actual operational needs and preventing waste.
Data Source
AI summary
There is provided a distributed control device including a sub-control circuit operated by using a power supply voltage, a first drive device controlled by the sub-control circuit, a first minor error output circuit that outputs a first minor error signal including first minor error information to the first drive device, a first major error output circuit that outputs a first major error signal including first major error information to the first drive device, a management control circuit that holds minor error information corresponding to the first minor error information and major error information corresponding to the first major error information, and a switching circuit that switches whether or not to supply the power supply voltage to the sub-control circuit. The switching circuit stops the supply of the power supply voltage to the sub-control circuit in accordance with the major error information.