Handheld Field Maintenance Tool Remote Terminal Access
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Solution Overview
Problem
Current field maintenance tasks for process control systems often require a two-person operation, which is cumbersome, and technicians in volatile environments need intrinsically safe devices that are expensive and complex, limiting efficient single-person maintenance and access to historical data during field operations.
Innovation Solution
A method using a mobile electronic device coupled to a field device's digital process communication channel, enabling a client software application to communicatively link with a host application, allowing a handheld field maintenance tool to function as a remote terminal, providing access to historical and asset management information and reducing the need for a second operator by leveraging existing digital or wireless communication protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional field maintenance operations are performed with a two-person team, then reliability of field device commissioning is improved, but productivity and operational efficiency deteriorate due to the cumbersome nature of requiring multiple personnel
Solution Approach 1:
The patent introduces a remote terminal as an intermediary device that enables a single technician to perform field maintenance tasks independently. The remote terminal provides real-time communication and data exchange capabilities, allowing the technician to receive guidance, access device information, and communicate with control room personnel without requiring a second person physically present at the field location.
2Reliability
If intrinsically safe devices are used in volatile environments, then safety requirements are satisfied, but device complexity and cost increase
Solution Approach 1:
The remote terminal is designed as a multi-functional device that can operate in both hazardous and non-hazardous locations. It provides universal functionality for field device communication, configuration, diagnostics, and data access across different environments. The device integrates multiple capabilities including HART protocol support, wireless communication, and real-time data exchange, eliminating the need for separate specialized equipment for different locations.
3Ease of operation
If technicians use traditional field maintenance tools, then basic field operations can be performed, but access to historical data and enhanced interaction with process control systems is limited
Solution Approach 1:
The remote terminal implements real-time feedback mechanisms that enable continuous data exchange between the field device, the technician's handheld device, and the control system. Historical data, device status information, and control parameters are continuously transmitted to the technician, enabling informed decision-making during field operations. The system provides immediate feedback on configuration changes, diagnostic results, and system responses.
Data Source
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AI summary
A method (150) of interacting with a process control system is provided. The method (150) includes bringing a mobile electronic device into physical proximity of a field device (152). The mobile electronic device is coupled to a digital process communication channel of the field device (154). A client software application is initiated on the mobile electronic device (156). The digital process communication channel is used to communicatively couple the client software application to a host application remote from both the mobile electronic device and the field device (158).