Ethernet-APL Field Device Configuration for Intrinsically Safe Networks
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Solution Overview
Problem
Existing technologies do not provide comparable bandwidth configuration capability for intrinsically safe edge devices, and they face power and reliable bandwidth limitations, especially in environments where traditional Ethernet protocols are not suitable.
Innovation Solution
The use of Ethernet Advanced Physical Layer (Ethernet-APL) technology enables direct configuration of field devices with full Human Machine Interface (HMI) capability, allowing web-based communication and configuration over a simple browser connection, supporting low-power devices and enabling safe operation in intrinsically safe environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional Ethernet protocols are used for configuring field devices in intrinsically safe environments, then device configuration capability is provided, but power consumption increases and bandwidth reliability decreases
Solution Approach 1:
The patent changes the communication protocol parameters by implementing Ethernet-APL (Advanced Physical Layer) which modifies the electrical characteristics, data rates, and power management parameters to enable reliable web-based configuration over APL networks while maintaining intrinsically safe operation and reducing power consumption compared to traditional Ethernet protocols
2Ease of operation
If web-based communication is implemented for direct configuration of field devices, then configuration capability and user interaction are improved, but device complexity increases
Solution Approach 1:
The patent applies universality by implementing a web server and web-based HMI on the field device that can be accessed through any standard web browser, making the configuration interface universal and accessible without requiring device-specific software or proprietary protocols, thereby improving ease of operation while managing complexity through standardized web technologies
Solution Approach 2:
The patent uses an intermediary approach by implementing a web server as a mediator layer between the user and the field device configuration parameters, allowing users to interact with complex device settings through simplified web-based interfaces while the web server handles the complexity of parameter management and device communication protocols
3Reliability
If Ethernet-APL is used for direct configuration, then power efficiency and bandwidth reliability are improved, but compatibility with traditional Ethernet infrastructure may be reduced
Solution Approach 1:
The patent applies segmentation by separating the communication into two layers: the physical/link layer uses Ethernet-APL for reliable, power-efficient communication in intrinsically safe environments, while the application layer uses standardized web protocols (HTTP, HTML) that maintain broad compatibility, thus resolving the contradiction between reliability and adaptability
Data Source
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AI summary
A method is provided of configuring a field device for monitoring and/or controlling an operation(s) of a process or plant. The method includes conducting web-based communication between a networked computer device and the field device over an Ethernet-APL to allow the networked computer device to access and interact with a web page(s) or program(s) that is hosted on a web server running on the field device. The method also includes configuring at the field device an operation parameter(s) and/or setting(s) of the field device based on user input received across the Ethernet-APL by the field device from user interaction with the web page(s) or program(s) through the networked computer device.