Field Device Optical Data Transfer Without Opening Enclosures
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Solution Overview
Problem
Current field devices require cumbersome and time-consuming processes for interaction, including obtaining hot work permits and using low-resolution displays, which hinder efficient data transfer and raise security concerns, especially in hazardous environments.
Innovation Solution
Implementing a machine-readable display output on field devices that generates QR codes or barcodes, allowing technicians to quickly and securely transfer data using their mobile devices without opening the device, leveraging high-resolution cameras for faster data processing and alleviating security concerns through one-way, point-to-point data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If technicians open the field device enclosure to interact with components, then they can access and transfer data directly, but this requires obtaining hot work permits and causes significant time loss and security risks
Solution Approach 1:
The patent introduces an optical communication interface as an intermediary mechanism between the field device and technician's mobile device. Data is transmitted through optical signals (QR codes or barcodes) displayed on the device screen, allowing technicians to access and transfer data without physically opening the explosion-proof enclosure, thus eliminating the need for hot work permits while maintaining security
Solution Approach 2:
The patent replaces the mechanical process of opening enclosures and physically accessing components with an optical communication system. Instead of manually opening the device housing to connect test leads, technicians use mobile device cameras to capture optical codes displayed on the field device, converting a mechanical access problem into an optical data transmission solution
2Productivity
If field devices use low-resolution displays for data output, then the device can operate with lower power consumption and simpler components, but data transfer efficiency and readability are significantly reduced
Solution Approach 1:
The patent employs machine-readable optical codes (QR codes or barcodes) as a high-capacity data copy mechanism. Instead of attempting to display large amounts of data directly on the low-resolution field device screen, the system encodes data into compact optical patterns that can be captured by mobile device cameras, effectively copying data from the limited display to the technician's high-capacity mobile device
Solution Approach 2:
The patent transitions data representation from the two-dimensional limitations of the field device's low-resolution screen to the optical dimension captured by mobile device cameras. By encoding data into optical patterns (QR codes/barcodes) that leverage the camera's higher resolution and processing capabilities, the system overcomes the display resolution constraint
3Ease of operation
If field devices implement bidirectional wireless communication capabilities, then technicians can remotely configure and diagnose devices, but this increases device complexity and potential security vulnerabilities in hazardous environments
Solution Approach 1:
The patent extracts the wireless communication functionality from the field device itself and relocates it to the technician's mobile device. The field device only needs to display optical codes, while all wireless communication, data processing, and protocol handling occur on the mobile device, significantly reducing the complexity and security risks associated with wireless capabilities in the hazardous environment
Solution Approach 2:
The optical display serves as an intermediary that enables remote interaction without requiring the field device to have embedded wireless communication hardware. The display acts as a bridge, allowing data to be transmitted from the field device to the mobile device through optical capture, eliminating the need for complex wireless protocols within the explosion-proof device
Data Source
AI summary
A field device includes a process communication module, a graphical display and a controller. The process communication module is configured to communicate in accordance with a process industry standard communication protocol. The controller is operably coupled to the process communication module and the graphical display and is configured to responsively cause the graphical display to generate a machine-readable display output.