NFC Level Switch Configuration via Passive Induction
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Solution Overview
Problem
Existing level switches lack a communications interface after assembly, making it difficult to configure, interrogate, or test them in the field or factory, and mechanical selectors added for configuration increase cost, complexity, and potential unreliability.
Innovation Solution
Incorporating a near field communication (NFC) facility that allows data exchange and control between a reader and the switch's processing circuitry, enabling calibration, diagnostics, and functionality control without opening the enclosure, using a passive NFC system powered by the reader.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mechanical selectors are incorporated for configuration, then configuration capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces mechanical selectors with a wireless communication interface (NFC - Near Field Communication) that enables configuration, interrogation, and testing of the level switch remotely through a reader device. This eliminates the need for physical mechanical components while providing the same configuration functionality, thereby reducing device complexity and potential points of failure.
2Ease of operation
If mechanical selectors are incorporated for configuration, then configuration capability is improved, but reliability deteriorates
Solution Approach 1:
The wireless NFC interface eliminates mechanical wear and contact issues associated with physical selectors, improving reliability. The contactless communication method has no moving parts or contact points that can fail, thereby enhancing the overall reliability of the configuration system.
3Adaptability or versatility
If NFC facility is added, then configuration capability is improved, but device complexity increases
Solution Approach 1:
The NFC facility serves multiple functions including configuration, interrogation, testing, and data exchange, consolidating what would otherwise require separate mechanical interfaces or procedures. This multi-functionality justifies the added component by providing comprehensive control capabilities through a single interface.
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
Enables configuration, testing, and data management of level switches without mechanical adjustments, reducing costs and complexity, while ensuring secure access and functionality, even before deployment.
Implementation Method 1
a near field communication (NFC) facility that allows data exchange and control between a reader and the switch's processing circuitry
Data Source
Figure 1~2
AI summary
The invention provides a level switch having a near field communications facility which allows at least some functions of the switch to be powered and the communication of data between the switch and a reader. Application and calibration information are examples of data that can be read to and from the switch, both in the factory and in the field.