Field Device Remote Connection via Visual Acoustic Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Field devices installed in difficult-to-reach locations within process plants pose challenges for connection due to unfavorable access conditions, making it hard to identify the correct device for Bluetooth pairing, especially when multiple devices are nearby.
Innovation Solution
The method involves the field device generating a visible or audible response signal to confirm receipt of a request signal, allowing the transmission of a password or identification name, enabling connection via a Bluetooth interface, using a display or loudspeaker for long-distance recognition and using Morse code-like signaling for data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If field devices are installed in difficult-to-reach locations to optimize process monitoring, then measurement coverage is improved, but device identification and connection become difficult
Solution Approach 1:
The field device uses color changes of its display element to transmit identification information and communication status. Different colors indicate different device identities or connection states, allowing remote identification without direct visual contact with the device screen.
Solution Approach 2:
The display element flashes periodically to transmit data signals during the connection process. This periodic flashing enables communication of device information and password exchange over distances where direct screen viewing is not possible.
2Reliability
If multiple field devices are located close together, then process monitoring density is improved, but device identification becomes ambiguous
Solution Approach 1:
Each field device is assigned unique color sequences or color combinations that serve as visual identifiers. This allows operators to distinguish between multiple devices in close proximity by observing the specific color patterns emitted by each device.
Solution Approach 2:
Devices use distinct flashing patterns or frequencies to create unique temporal signatures. This periodic variation in display behavior enables operators to identify and select the correct device even when multiple devices are physically close together.
3Adaptability or versatility
If direct eye contact with field device is not possible, then installation flexibility is improved, but connection setup becomes complex
Solution Approach 1:
The patent replaces the mechanical/visual interaction model (direct screen viewing and manual input) with an optical signaling system. The display element communicates device information and receives connection commands through flashed light patterns, eliminating the need for direct line-of-sight to the device interface.
Solution Approach 2:
The flashing display acts as an intermediary communication channel between the operator and the field device. Instead of requiring direct interaction with the device interface, the operator communicates through the optical signaling system, which mediates the connection setup process.
Data Source
Figure 1
AI summary
A method for connecting a field device (1) to an operating unit (2) is described and illustrated. The invention is based on the objective of proposing a method by which a connection between a field device and an operating unit is realized even when the field device is mounted in a difficult-to-access location. This objective is achieved by the operating unit (2) transmitting a request signal to the field device (1) and the field device (1) generating a response signal in response to the request signal by producing a flashing display and/or a color change of a display and/or an acoustic signal and/or a change in an acoustic signal. Furthermore, the invention relates to a field device (1).