Field Device Infrared Wireless Communication System
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Solution Overview
Problem
In large plants, maintaining and inspecting field devices is challenging due to radio signal coverage issues and the high likelihood of errors in manual checklist-based processes, which can lead to missed tasks and inaccuracies.
Innovation Solution
A field device and communication system that convert messages from a provisioning device to data transmissible over a wireless communication network, enabling efficient and accurate communication between workers and administrators, and reducing manual input errors through infrared and wireless communication standards like ISA 100.11a.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual checklist-based processes are used for maintenance and inspection, then workers can perform tasks systematically, but errors and omissions occur due to monotony and large numbers of devices
Solution Approach 1:
The field device automatically records maintenance information and transmits it to the host apparatus without requiring manual input from workers. The device performs self-diagnosis and self-reporting, eliminating the need for workers to manually check and record each parameter, thus preventing human errors while maintaining systematic task completion.
Solution Approach 2:
The system establishes automatic feedback loops where the field device continuously monitors its own status and automatically transmits information to the host apparatus. This real-time feedback mechanism ensures accurate recording of maintenance data without manual intervention, improving both reliability and efficiency.
2Loss of information
If workers manually input checklist results into computers, then work results can be compiled, but input and compilation errors occur due to manual processing
Solution Approach 1:
The manual mechanical process of writing and transcribing checklist results is replaced by an automated electronic system. The field device automatically captures maintenance data and transmits it digitally to the host apparatus, eliminating the manual input process that causes errors and saving compilation time.
Solution Approach 2:
Instead of manually copying and transcribing checklist results, the system creates direct digital copies of maintenance data automatically captured by the field device. This digital copying process eliminates transcription errors and significantly reduces the time required for data compilation.
3Ease of operation
If administrators are located in control rooms separated from field devices, then centralized control is achieved, but communication becomes difficult when radio signal coverage is insufficient
Solution Approach 1:
The wireless communication network acts as an intermediary between the field device and the host apparatus in the control room. This intermediary system enables reliable communication across large distances and through physical barriers, maintaining contact reliability while preserving centralized control architecture.
Solution Approach 2:
The system transitions from direct line-of-sight radio communication to multi-dimensional wireless communication pathways. By utilizing various communication protocols and pathways (wireless network, gateway devices), the system overcomes physical separation and signal coverage limitations, ensuring reliable communication between distributed field devices and centralized control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances the efficiency and accuracy of maintenance and inspection tasks by ensuring reliable communication and reducing errors in data input and compilation, improving overall work processes in plants and factories.
Implementation Method 1
a second communication unit that transmits and receives messages with external devices
Data Source
AI summary
A field device provided with a first communication unit for communicating over a communication network, a second communication unit for communicating via infrared with an external device, a converter for converting a message transmitted by the external device and received by the second communication unit into data that can be transmitted over the communication network, and a first controller for controlling the first communication unit and transmitting the data converted by the converter to the communication network.