Fieldbus Gateway Request Priority Determination
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Solution Overview
Problem
Fieldbus communication frameworks face challenges in prioritizing and timely transmission of requests, leading to potential system failures and disasters due to the first-in-first-out protocol, which fails to handle important requests efficiently, especially under high traffic conditions.
Innovation Solution
A method to determine request transmission priority based on request content, using conditions such as the type of request, address of the slave device, and operational conditions, allowing for prioritization and timely transmission of critical requests within the Fieldbus communication framework.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the first-in-first-out protocol is used for request transmission, then the system maintains simplicity and ease of operation, but important requests cannot be transmitted timely under high traffic conditions
Solution Approach 1:
The patent changes the transmission parameter from fixed FIFO order to dynamic priority-based ordering. The communication gateway evaluates request parameters (device type, request type, operational state) and transmits requests based on calculated priority levels, allowing important requests to jump ahead in the transmission queue without changing the fundamental FIFO protocol structure.
2Device complexity
If the first-in-first-out protocol is used for request transmission, then the communication framework maintains simplicity, but system reliability deteriorates due to potential failures and disasters from delayed critical requests
Solution Approach 1:
The patent introduces priority evaluation parameters (device importance, request urgency, operational state) that transform the communication framework from simple FIFO to priority-based transmission. This parameter enhancement maintains framework simplicity while significantly improving reliability by ensuring critical requests are transmitted promptly.
Solution Approach 2:
The communication gateway acts as an intermediary that evaluates request priority and manages transmission ordering. This intermediary function bridges the gap between simple FIFO protocol and reliable priority-based transmission, adding intelligence at the gateway level without requiring protocol changes throughout the entire system.
3Loss of time
If priority-based request transmission is implemented, then timely transmission of important requests is achieved, but the communication device complexity increases
Solution Approach 1:
The patent enhances the communication device by adding priority evaluation capabilities based on request parameters. The device analyzes device type, request type, and operational state to determine transmission priority, achieving timely critical request transmission through parameter-based differentiation rather than complex structural changes.
Solution Approach 2:
The communication device performs preliminary priority evaluation and queue reordering before request transmission. By pre-assessing request importance and arranging transmission order in advance, the system ensures timely delivery of critical requests without adding complexity to the actual transmission process.
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.