Wireless Configuration of Small Control Devices Using Optical ID
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Solution Overview
Problem
Current wireless transmission methods for configuring and parameterizing small control devices, such as safety switching devices, face challenges in ensuring targeted communication and preventing incorrect configuration or data corruption, especially in industrial environments with multiple devices mounted in close proximity.
Innovation Solution
A system that utilizes a unique optically detectable device identifier, encoded on the device, to ensure that configuration and parameterization data are transmitted only to the correct small control unit, using a short-range radio interface like NFC, and verified against a stored identifier before processing, thereby preventing incorrect configuration and data corruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless transmission is used for configuration and parameterization, then ease of operation is improved, but reliability deteriorates due to risk of incorrect device selection and data corruption
Solution Approach 1:
The system performs preliminary identification of the target device using optical codes (QR, DataMatrix) before the actual wireless configuration transmission. This preliminary action ensures that the correct device is selected and prepares the communication channel, preventing incorrect configuration and enhancing reliability before the main configuration operation occurs.
Solution Approach 2:
The patent introduces an intermediary identification system (optical codes and device identification unit) that mediates between the configuration device and the target control device. This intermediary layer ensures accurate device selection and verification, preventing data corruption and incorrect configuration while maintaining wireless ease of operation.
2Reliability
If short-range wireless communication (NFC) is used, then reliability is improved by limiting transmission range, but ease of operation deteriorates due to difficulty in establishing precise spatial positioning
Solution Approach 1:
The system performs preliminary device identification through optical code recognition before requiring close spatial positioning for NFC communication. This preliminary action reduces the complexity of precise alignment by establishing target identification first, then guiding the user to bring devices close together, thereby maintaining reliability while improving ease of operation.
Solution Approach 2:
The configuration device automatically detects and identifies the target device through optical codes without requiring manual intervention for device selection or precise positioning. The system self-services the identification process, reducing the operational burden on the user while ensuring reliable targeted communication.
3Productivity
If multiple devices are mounted in close proximity, then productivity is improved through compact installation, but reliability deteriorates due to difficulty in distinguishing individual devices
Solution Approach 1:
The patent assigns unique optical identification codes to each individual control device, effectively segmenting the identification space. This allows each device to be uniquely identified even when multiple devices are mounted in close proximity, maintaining reliable device distinction while enabling compact high-density installation.
Solution Approach 2:
The system uses optical code copies (QR codes, DataMatrix codes) attached to each device as a reliable identification mechanism. These visual copies provide a clear, distinguishable identifier for each device that can be easily read even in dense installations, ensuring accurate device identification without requiring physical separation or complex positioning.
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 approach guarantees error-free configuration and parameterization of safety-critical devices, ensuring that only the intended device receives the data, thus enhancing safety and reliability in industrial settings by eliminating the risk of incorrect transmission and data corruption.
Implementation Method 1
a configuration and/or parameterization device (2) for optically detecting (2a) a unique device identifier (1c) on a small control device (1)
Implementation Method 2
configuration and/or parameterization data (3) and the device identifier (1c) assigned to it are sent wirelessly
Data Source
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AI summary
The invention relates to a system for configuring and/or parameterizing small control devices (1), wherein configuration and/or parameterization data (3) intended for the small control devices (1) are wirelessly transmitted to them, wherein each small control device (1) has a unique device identifier (1c) which is stored in a data memory (4) of this small control device (1) and is optically detectable on or attached to this small control device (1), and wherein this unique device identifier (1c) is optically detectable by a configuration and/or parameterization device and can be assigned to configuration and/or parameterization data (3) to be transmitted to a small control device (1), wherein the configuration and/or parameterization device is further configured such that the configuration and/or parameterization data and the device identifier assigned thereto can be wirelessly transmitted to the small control device (1).wherein configuration and/or parameterization data (3) received by a small control unit (1) from the configuration and/or parameterization device are only used for configuration and/or parameterization within this small control unit (1) if the device identifier (1c) assigned to the received configuration and/or parameterization data (3) matches the device identifier (1c) stored in the data memory (4) of the small control unit (1).