Distributed Control System Error Detection via ID Comparison
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Solution Overview
Problem
In industrial systems with distributed control boards, detecting erroneous connections or defects is challenging, especially when multiple control boards are arranged in the same device, as existing methods fail to identify which connection device or communication cable is incorrectly connected or failing, affecting the efficiency of connection work, particularly in automatic analysis devices that require modular and flexible configurations.
Innovation Solution
A distributed control system comprising a central computation device with a storage unit for correct connection information, a comparison unit to compare with actual connection information, a central communication device managing communication control, and terminal communication devices with identifiable IDs, which outputs error signals to a display device to highlight abnormal parts, enabling easier detection of errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If control boards are distributedly arranged to reduce device size and wiring, then device size and wiring complexity are reduced, but the likelihood of communication errors and connection defects increases
Solution Approach 1:
The system performs preliminary detection of connection states by having each control board transmit its identification information to the control device before actual operation begins. This allows the control device to verify all connections are correct in advance, preventing communication errors before they affect system reliability.
Solution Approach 2:
The control device receives feedback from each control board regarding its connection state and identification information. This feedback mechanism enables continuous monitoring of connection integrity in the distributed system, allowing immediate detection and correction of connection defects while maintaining system reliability.
2Ease of manufacture
If control boards are distributedly arranged to improve manufacturing and maintenance efficiency, then manufacturing and maintenance efficiency are improved, but connection error detection becomes more difficult
Solution Approach 1:
Each control board automatically transmits its own identification information to the control device, enabling self-verification of connections. This self-service approach eliminates the need for manual connection checking during manufacturing and maintenance, making the process more efficient while simultaneously improving detection capability through automated comparison of transmitted information against expected connection data.
Solution Approach 2:
The patent replaces manual mechanical connection verification with an automated electronic information transmission and comparison system. Control boards electronically transmit their identification information, and the control device automatically compares this against expected connection data, substituting manual detection methods with automated electronic verification that is both more efficient and more accurate.
3Adaptability or versatility
If modular distributed control system is implemented to improve flexibility and adaptability, then system flexibility is improved, but the complexity of identifying erroneous connections increases
Solution Approach 1:
The system divides the distributed control network into individual segments, where each control board independently transmits its identification information to the control device. This segmentation allows the control device to process and verify each connection separately, maintaining system flexibility while simplifying error identification by isolating individual connection states rather than dealing with the entire distributed system as a single complex unit.
Data Source
AI summary
In a distributed control system, when the determination that an error has occurred is made as a result of comparison of correct connection information retained in a storage unit and connection information of an actually connected control object device or terminal communication device by a comparison unit, a central computation device outputs a display signal of an abnormal part to a display device, and the display device displays the abnormal part on the basis of the display signal. A distributed control system and an automatic analysis device provided with the same, and an automatic analysis system are thereby provided, whereby an erroneous connections or defects can be more easily and reliably detected than in the prior art, even when a plurality of control boards are distributedly arranged in the same device.