Fieldbus Gateway Priority Request Transmission
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Solution Overview
Problem
In Fieldbus communication frameworks, requests are typically handled based on a First-In-First-Out (FIFO) order, which can lead to important requests being delayed or missed during high communication traffic, potentially causing disruptions or disasters in industrial and control systems.
Innovation Solution
A method to determine request transmission priority based on the content of each request, allowing the communication gateway to transmit requests in order of priority, using conditions such as counter values, queue lengths, switch states, and device-detected values, and categorizing requests into priority levels to ensure timely execution of critical requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If requests are handled based on FIFO order in Fieldbus communication, then the communication system maintains simplicity and protocol compatibility, but critical requests may be delayed or missed during high communication traffic
Solution Approach 1:
The patent changes the request handling parameter from fixed FIFO order to dynamic priority-based ordering. The communication gateway evaluates multiple parameters including request type, source device, destination device, and content importance to assign priority levels. This allows critical requests to be transmitted ahead of non-critical requests during high traffic conditions, reducing transmission delay while maintaining protocol compatibility through software-based priority assignment rather than hardware modifications.
2Reliability
If priority-based request transmission is implemented, then critical requests are transmitted promptly, but the communication gateway requires additional processing complexity
Solution Approach 1:
The patent introduces priority level parameters and evaluation criteria without adding physical hardware components. The communication gateway uses software-based priority assignment that considers request type, source, destination, and content importance. This parameter-based approach achieves reliable critical request transmission while keeping the gateway structurally simple, as the complexity is managed through logical processing rather than additional physical devices.
3Adaptability or versatility
If FIFO order is used for request transmission, then the communication protocol remains simple and compatible, but the system cannot adapt to different request importance levels
Solution Approach 1:
The patent enhances adaptability by introducing priority level parameters and evaluation criteria that allow the communication gateway to adapt to different request importance levels. The system can dynamically adjust transmission order based on request characteristics while maintaining protocol compatibility. This software-based parameter management provides versatility without requiring complex hardware modifications or protocol changes.
Data Source
AI summary
A method of determining request transmission priority subject to request content and transmitting request subject to such request transmission priority in application of Fieldbus communication framework in which the communication device determines whether the received requests have the priority subject to the respective content, and also determines whether there is any logical operation condition established, and then the communication device transmits the received external requests to the connected slave device as an ordinary request or priority request, preventing the slave device from receiving an important external request sent by the main control end or manager at a late time.