Wireless Relay Remote Unit Automatic Failure Restoration
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Solution Overview
Problem
In wireless relay systems, temporary failures of remote units disrupt communication until a repair worker can address the issue, as existing systems lack the ability to automatically restore communication during such failures.
Innovation Solution
The system incorporates a switching unit, communication unit, determiner, and switching controller in each remote unit to switch between normal and bypass connections, allowing for automatic detection and restart of communication units, enabling temporary failure restoration without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a failed remote unit is bypassed to restore communication, then communication reliability is improved, but loss of time occurs because temporary failures cannot be automatically restored and require manual repair intervention
Solution Approach 1:
The remote unit performs self-diagnosis through the determination unit to detect communication unit failures, and the control unit automatically switches to bypass connection or restores the communication unit without requiring manual repair intervention, enabling the system to service itself
Solution Approach 2:
The control unit switches to bypass connection in advance when a failure is detected, preventing communication interruption. Additionally, the system prepares to automatically restore communication units at predetermined times before manual repair arrives, acting preliminarily to restore service
2Reliability
If manual repair intervention is required for failed remote units, then communication reliability is maintained through repair, but device complexity increases due to the need for monitoring and manual intervention systems
Solution Approach 1:
The remote unit autonomously monitors its own communication unit status through the determination unit and automatically executes failure response actions including bypass switching and restoration attempts, eliminating the need for external monitoring systems and manual intervention
Solution Approach 2:
The determination unit continuously provides feedback on communication unit status to the control unit, which automatically adjusts the connection mode based on this feedback, creating a closed-loop self-managing system that reduces overall system complexity
Data Source
AI summary
A wireless relay system includes a master unit and remote units. The remote units are connected to a communication path downstream of the master unit. Each remote unit includes a switching unit, a communication unit, a determiner, and a switching controller. The switching unit switches a normal connection in which the master unit or an upstream remote unit is connected to a downstream remote unit and a bypass connection in which they are connected with the communication unit not interposed therebetween. The communication unit processes a signal to be transmitted/received for communication. The determiner determines whether the communication unit is normal or abnormal. The switching controller switches the switching unit to the bypass connection when the communication unit is abnormal. After switching to the normal connection, the deter liner determines whether the communication unit is normal or abnormal after restarting the communication unit.