Slave Device Status Log Update for Fault Isolation
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Solution Overview
Problem
In communication systems with a master device and a slave device, it is challenging for the slave device to determine whether its abnormal status is caused by its own fault or the abnormal status of the master device, as the master device may not transmit its own status information.
Innovation Solution
The implementation of a communication system where both the master device and the slave device are equipped with status sensors to generate status information, which is then exchanged between the devices through in-band and out-of-band channels, allowing for the updating of status logs and enabling the slave device to perform fault prevention operations based on the shared status information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the master device does not transmit its status information to the slave device, then the communication system structure remains simple, but the slave device cannot determine whether its abnormal status is caused by the master device
Solution Approach 1:
The master device transmits its status information to the slave device, creating a feedback loop where the slave device receives information about the master device's operational state. This enables the slave device to correlate its own status with the master device's status and determine causality of abnormalities.
Solution Approach 2:
A status management system acts as an intermediary between the master and slave devices, facilitating the exchange of status information. This intermediary mechanism coordinates the transmission and interpretation of status data without requiring complex direct communication protocols between the devices.
2Measurement precision
If the master device transmits status information to the slave device, then the slave device can accurately identify fault causes, but the communication protocol becomes more complex
Solution Approach 1:
The status information is transmitted using standardized parameters and data formats that simplify the communication protocol. By defining specific status parameters and their meanings, the system achieves accurate fault identification without requiring complex communication mechanisms.
Solution Approach 2:
The slave device receives a copy of the master device's status information and stores it in its status log. This copying mechanism allows the slave device to analyze fault causes without requiring real-time complex interactions with the master device, simplifying the communication protocol.
3Difficulty of detecting and measuring
If the slave device stores and analyzes status logs from both devices, then fault diagnosis capability is improved, but the processing requirements and memory needs increase
Solution Approach 1:
The slave device extracts only the relevant status parameters from the master device's status information and stores them in its status log. By selecting and storing only necessary data elements rather than complete status datasets, the system improves fault diagnosis capability while minimizing memory and processing resource requirements.
Data Source
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AI summary
An operation method of a slave device that communicates with a master device and stores a status log includes receiving first status information from the master device, generating one or more second status information for the slave device, and updating the status log based on the first status information and the one or more second status information.