Pump Drive Power Switching Without Communication Loss
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Solution Overview
Problem
Existing ECMO systems experience power outages and communication interruptions during power supply switching, leading to pump stoppages and false alarms, which complicate clinical operations and increase patient risk.
Innovation Solution
A method and system for uninterrupted power switching in ECMO systems, utilizing a control unit in a connector to establish real-time communication with the pump drive, identify power supply types, and manage simultaneous power sources, ensuring normal switching is detected to avoid alarms and maintain continuous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a battery is used to provide emergency power to the pump drive when control host power fails, then power supply reliability is improved, but communication interruptions and false alarms occur during power switching
Solution Approach 1:
The control unit in the connector proactively establishes real-time communication with the pump drive before power switching occurs. This preliminary communication setup ensures that the pump drive is aware of the impending power change and can prepare accordingly, preventing communication interruptions and false alarms during the actual switching process
Solution Approach 2:
The system implements feedback mechanisms where the control unit continuously monitors communication status between the power supply device, connector, and pump drive. During power switching, the feedback loop detects communication state changes and triggers appropriate responses to maintain stable communication, preventing false alarms while ensuring reliable power transition
2Reliability
If the pump drive establishes real-time communication monitoring with the control host to improve safety, then safety performance is improved, but communication interruptions occur during power supply device switching
Solution Approach 1:
The control unit in the connector serves as an intermediary between the power supply device and the pump drive. It manages communication during power switching by mediating the interaction between these components, simplifying the communication management while maintaining safety performance through coordinated control
3Stability of the object's composition
If the control host and battery simultaneously supply power to the pump drive, then power supply stability is improved, but communication abnormality detection becomes more difficult
Solution Approach 1:
The control unit segments the communication monitoring function by establishing separate communication channels with different power supply devices. When multiple power sources are connected, it can independently monitor communication status with each source, making it easier to detect and identify communication abnormalities even in complex multi-power-source configurations
Data Source
AI summary
The present application provides a method and system for uninterrupted power supply switching for a pump driver. According to the electrical connection relationships among the devices in the system to which the method is applied, and the corresponding determination method of whether a control host switches normally, redundant power supply for the pump drive can be achieved. When one or more power supply devices supply power simultaneously, the types of all power supply devices can be fully identified, and during a power supply switching process, accurate determination and timely communication connection establishment with the pump drive can be achieved, avoiding abnormal alarms being triggered by the pump drive during or after the power supply switching process, thereby ensuring uninterrupted continuous operation of the pump drive.