Electromechanical Bus Node Isolation via SHMC Diagnostics
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Solution Overview
Problem
Existing electromechanical management systems for communication devices fail to automatically locate and isolate failed nodes, requiring manual checks and resulting in resource waste and operational disruptions.
Innovation Solution
A method that involves an SHMC recording communication states, performing analysis to detect irrecoverable abnormalities, and using mechanical switches to isolate failed nodes through coordinated communication tests, with remote warning and indication to maintenance systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two groups of serial buses are started to serve as stand-by for each other, then the usability of the bus is improved, but when one bus is abnormal, it fails to locate and isolate the damaged node requiring manual checking of all boards
Solution Approach 1:
The system enables self-diagnosis and self-isolation of failed nodes through automated communication testing and mechanical switch control. The SHMC initiates communication tests with each node, and upon detecting a failure, automatically controls the mechanical switch to isolate the failed node without requiring manual intervention.
Solution Approach 2:
The system implements feedback mechanisms where communication states are recorded and analyzed to determine abnormalities. The SHMC receives communication results from each node, processes this feedback information, and based on the analysis, determines whether a node has failed and takes appropriate isolation actions.
2Measurement precision
If manual checking of all boards is performed to locate failed nodes, then fault identification can be achieved, but human resource is wasted and equipment operations are affected
Solution Approach 1:
The patent replaces manual mechanical checking with automated electronic communication testing. Instead of physically inspecting each board, the system uses the electromechanical management bus to automatically test communication with each node, identifying failures through electronic signals and automated protocols.
Solution Approach 2:
The system performs self-diagnosis by automatically testing communication with each node and identifying failures without external intervention. The SHMC autonomously initiates tests, analyzes results, and executes isolation commands, eliminating the need for manual fault location procedures.
3Device complexity
If serial buses are used for electromechanical management, then the system is conveniently realized with few signal wires, but nodes may fail and affect communication of all bus nodes
Solution Approach 1:
The system segments the bus into isolated sections using mechanical switches. When a failure is detected, the mechanical switch opens to segment the bus, preventing the failure from propagating to other nodes. This maintains the simple serial bus structure while adding isolation capability to protect communication reliability.
Solution Approach 2:
The system prepares for potential failures by pre-configuring mechanical switches at each node. These switches act as protective measures in advance, ready to isolate failed nodes before they can affect the entire bus. The standby SHMC and communication testing protocols also serve as preventive measures.
Data Source
AI summary
A method for locating and isolating a failed node of an electromechanical management bus in a communication device. The method includes, in a communication process, an SHMC in operation records communication states of electromechanical management buses; the SHMC in operation performs calculation and analysis operations on data associated with the communication states, and determines whether there is an irrecoverable communication abnormality in a corresponding bus; if so, the SHMC sends, by means of a normal electromechanical management bus, a command to an electromechanical management node subordinate to the abnormal electromechanical management bus, such that the electromechanical management node controls a corresponding mechanical switch of the bus, coordinates respective nodes of the abnormal electromechanical management bus to conduct mutual communication tests with each other, locates a failed node, and returns location information of the failed node.