Field Device QR Display for Safe One-Way Data Transfer
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Solution Overview
Problem
Current field devices require cumbersome and time-consuming processes for interaction, including obtaining hot work permits and physically opening enclosures, which can be unsafe in hazardous environments. Additionally, low-power devices with limited display capabilities struggle to provide significant digital data to users.
Innovation Solution
Implementing a machine-readable display output on field devices that can generate QR codes or barcodes, allowing technicians to quickly and securely transfer data to their mobile devices using cameras, thereby eliminating the need to open the device enclosure and reducing safety risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If technicians physically open field device enclosures to access circuitry, then they can directly interact with and diagnose the device, but safety risks increase in hazardous environments and the process becomes time-consuming
Solution Approach 1:
The patent replaces the mechanical approach of physically opening enclosures and directly accessing circuitry with an optical/electronic system. A display on the field device shows a machine-readable code that can be scanned by a portable device, enabling data transfer and device interaction without mechanical opening of the enclosure, thus maintaining safety in hazardous environments.
2Reliability
If technicians obtain hot work permits and follow safety procedures before accessing field devices, then safety is maintained, but the interaction process becomes cumbersome and time-consuming
Solution Approach 1:
The patent extracts the essential data transfer function from the physical enclosure opening process. By displaying machine-readable codes on the field device that can be scanned externally, the system separates data access from physical access, eliminating the need for hot work permits and safety procedures while maintaining safety, thus significantly reducing time loss.
3Loss of information
If field devices provide detailed digital data on small displays, then information completeness improves, but the display capabilities of low-power devices are insufficient
Solution Approach 1:
The patent transitions from a two-dimensional limited display on the field device to a larger external display on a portable device. The machine-readable code on the field device acts as a gateway, transferring data to the portable device's screen, effectively providing unlimited display space without increasing the complexity or power requirements of the field device's own display.
Data Source
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Figure 3~4B
AI summary
A field device (100) includes a process communication module (122), a graphical display (106) and a controller (126). The process communication module (122) is configured to communicate in accordance with a process industry standard communication protocol. The controller (126) is operably coupled to the process communication module (122) and the graphical display (106) and is configured to responsively cause the graphical display to generate a machine-readable display (106) output.