Dual-Gateway Control Architecture for Fault-Tolerant Bus Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In integrated motor starters, a single point of failure in the gateway can disrupt communication between multiple motor starters and a PLC, leading to system instability and potential losses.
Innovation Solution
A control device with a primary and standby gateway configuration, where the first gateway performs information exchange with a controller and bus units, and the second gateway takes over in case of a fault, ensuring continuous information exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single gateway is used for information exchange between the controller and bus units, then the device complexity is reduced, but the reliability of communication is worsened due to single point of failure
Solution Approach 1:
The gateway function is segmented into multiple independent gateway units (first gateway and second gateway), each capable of performing information exchange between the controller and bus units. This segmentation eliminates the single point of failure, as the system can switch to the standby gateway if one fails, thereby improving communication reliability while maintaining manageable complexity through modular design
Solution Approach 2:
The system changes the operational state parameter of the gateway from a single active unit to multiple units with different states (active and standby). The first gateway operates in active state while the second gateway operates in standby state, with automatic state transition capability upon fault detection, thus improving reliability without significantly increasing complexity
2Reliability
If a standby gateway is added to take over in case of fault, then the reliability of communication is improved, but the device complexity increases
Solution Approach 1:
The second gateway is pre-configured in standby state before any fault occurs, with all necessary communication protocols and routing information already prepared. This preliminary preparation ensures that when a fault occurs, the takeover is immediate and seamless, improving reliability without requiring complex real-time reconfiguration, thus limiting the increase in device complexity
Solution Approach 2:
The second gateway is designed as a functional copy of the first gateway, with identical communication capabilities and interface specifications. This copying approach simplifies the system architecture by using standardized modular units, making the standby mechanism easier to implement and maintain, thereby reducing the complexity increase that would otherwise result from having redundant components
3Stability of the object's composition
If the second gateway monitors the first gateway for faults, then the stability of the system is improved, but the use of energy increases due to continuous monitoring
Solution Approach 1:
The second gateway continuously monitors the operational status of the first gateway through feedback signals exchanged between the gateways. This feedback mechanism enables the standby gateway to detect faults in the active gateway and trigger automatic takeover, thereby improving system stability. The monitoring uses efficient communication protocols that minimize energy consumption while maintaining continuous surveillance capability
Data Source
Figure 1~2A
Figure 2B~2C
Figure 3~4
AI summary
According to embodiments of the present disclosure, there is provided a control device, a control method and a storage medium. The control device comprises: one or more bus units, respectively connected to a bus in the control device; and a first gateway and a second gateway connected to each other, the first and second gateways are respectively connected to the bus and adapted to couple to the controller, wherein the first gateway is configured to perform information exchange between the controller and one or more bus units, and the second gateway is configured to at least partially perform information exchange in response to a fault associated with the first gateway, replacing the first gateway. According to embodiments of the present disclosure, the second gateway can replace the first gateway to perform information exchange between the controller and the bus unit in the event of a fault of the first gateway.