UPS Network Shutdown Notification via UDP/IP
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In existing redundant power systems, power failure detection notifications to load devices via networks are often delayed, leading to incomplete shutdown sequences and potential system crashes, especially when multiple uninterruptible power supplies connect to a single network, causing communication disruptions and retransmission issues.
Innovation Solution
An uninterruptible power supply system that communicates with load devices through a network, using a UPS storage mechanism to store waiting times and notification means to provide timely shutdown instructions, ensuring proper shutdown processing even with delayed notifications, and utilizing UDP/IP packets for efficient communication without retransmission control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If uninterruptible power supplies send power failure detection notification via network, then network connectivity is utilized for communication, but notification delivery is delayed due to network occupancy
Solution Approach 1:
The uninterruptible power supply performs preliminary actions by storing the waiting time until load device shutdown in advance (before power failure occurs). When power failure is detected, the system immediately transmits the notification with the pre-calculated waiting time, eliminating the need for real-time calculation during the critical notification phase and ensuring timely delivery even with network delays.
Solution Approach 2:
The system implements feedback by having the load device transmit a shutdown completion notification back to the uninterruptible power supply after shutdown processing is complete. This feedback mechanism allows the uninterruptible power supply to monitor whether the load device successfully completed shutdown within the allocated waiting time, enabling system optimization and error handling.
2Reliability
If multiple uninterruptible power supplies transmit power failure detection notification simultaneously, then comprehensive coverage is achieved, but notification collision and delay probability increases
Solution Approach 1:
Each uninterruptible power supply pre-calculates and stores the waiting time until load device shutdown before power failure occurs. When power failure is detected, multiple uninterruptible power supplies transmit notifications with their respective pre-stored waiting times simultaneously. The load device can process these notifications independently using the pre-calculated time values, avoiding collision problems and ensuring reliable shutdown initiation.
3Reliability
If network devices are powered during power failure, then communication reliability is maintained, but power consumption increases and backup time decreases
Solution Approach 1:
The system performs preliminary action by storing the waiting time until load device shutdown in advance (before power failure). This pre-stored time information allows the load device to initiate shutdown processing immediately upon receiving the power failure notification, without requiring continuous network communication during the shutdown process. Consequently, network devices can be powered down during power failure, extending backup power duration while maintaining communication reliability through the pre-exchanged time information.
4Reliability
If exclusive communication lines are used for each uninterruptible power supply, then communication reliability is ensured, but system complexity and connection requirements increase
Solution Approach 1:
The invention applies universality by having the load device execute shutdown processing based on the waiting time information received from any uninterruptible power supply via the shared network. The load device is designed to handle shutdown initiation from multiple potential sources, making the system multi-functional and source-agnostic. This approach allows multiple uninterruptible power supplies to share a single network connection while maintaining reliable shutdown control, eliminating the need for exclusive communication lines for each unit.
Data Source
AI summary
An uninterruptible power supply and its load device are connected by a network, and the load device to which power is fed by the uninterruptible device properly executes shutdown processing. Communication means 49 of uninterruptible power supplies 2 and 3 communicate with a load device 4 to which they themselves feed power, via a network 5. UPS storage means 47 stores a waiting time until the load device 4 starts shutdown after it is notified of detection of power abnormality of an AC power supply 6. Notification means 48 causes the communication means 49 to provide notification of a remaining time until start of shutdown, in a time period until a time period corresponding to the waiting time (67) stored in the UPS storage means 47 elapses after power abnormality of the AC power source 6 is detected.