Duplex IO Module Handoffs for Continuous Load Operation
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Solution Overview
Problem
Industrial automation systems face challenges in maintaining high availability and reliability, particularly in critical applications like petrochemical processes, where downtime is unacceptable, and existing redundant power supply systems may introduce operational disruptions and signal transients during switching.
Innovation Solution
A system and method utilizing redundant and concurrently operating IO modules that perform coordinated handoffs to maintain continuous operation, with control systems managing the transition between primary and secondary modules to ensure seamless power and signal continuity, employing universal IO circuitry for enhanced diagnostic capabilities and fault tolerance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundant power supply systems are used to improve system availability, then system reliability is improved, but operational disruptions and signal transients occur during switching
Solution Approach 1:
The patent implements hot-swappable IO modules that maintain continuous electrical connection to the load throughout the replacement process. The old module is electrically isolated through internal switching while remaining physically connected, allowing seamless transition to the new module without interrupting power or signal flow to the load.
Solution Approach 2:
The patent introduces internal switching circuitry within the IO module that acts as an intermediary between the module's output and the load. This switching mechanism allows the module to transition between active and standby states without creating external signal transients, effectively mediating the handoff process.
2Reliability
If redundant IO modules are implemented to achieve high availability, then system reliability is improved, but device complexity increases
Solution Approach 1:
The patent designs universal IO modules with standardized interfaces and hot-swappable connectors that can be replaced without changing the system architecture. The modules use common terminal blocks and electrical connections, allowing redundancy to be implemented with identical or compatible modules rather than requiring complex custom configurations.
Solution Approach 2:
The patent implements automatic detection and handoff mechanisms where the control system automatically detects when an IO module is replaced and seamlessly transfers the load connection to the new module. This self-service capability eliminates the need for manual reconfiguration or complex switching logic, reducing operational complexity despite the physical redundancy.
3Reliability
If IO modules are taken offline for maintenance or upgrades, then system reliability is improved through preventive maintenance, but system availability decreases during the maintenance window
Solution Approach 1:
The patent enables hot-swappable IO modules that can be replaced while the system remains operational. The load maintains continuous electrical connection through the terminal blocks during the module replacement process, allowing maintenance activities to proceed without interrupting the useful action of power delivery or signal transmission to the load.
Solution Approach 2:
The patent allows the new IO module to be pre-positioned and electrically connected to the terminal blocks before the old module is removed. This preliminary action ensures that the load already has a ready-to-go replacement connected, eliminating any potential downtime during the actual module swap operation.
Data Source
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AI summary
Embodiments of this present disclosure may include a system that may include a first input/output (10) module, which may output a first current output. The first IO module may be coupled to a first terminal and a second terminal. The system may include a second IO module that may output a second current output. The second IO module may be coupled to the first terminal and the second terminal. The system may include a load device coupled to the first terminal and the second terminal. The load device may operate based on the first current output and the second current output. The system may include one or more control systems that receive an instruction to perform a coordinated handoff to the first IO module.