Dual-Function Actuator for RFID Safety Switch Configuration

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Solution Overview

Problem

Existing safety devices require additional configuration actuators, leading to increased production, warehousing, and logistical efforts, with non-verifiable configurations risking manipulation or malfunction, and the use of DIP switches necessitates higher manufacturing costs and complex sealing measures.

Innovation Solution

Equipping the actuator with a dual function to configure the safety switch via wireless data transmission, eliminating the need for separate configuration actuators and DIP switches, using a transponder and RFID reading unit to store and read data codes that define specific configurations, preventing improper configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If separate configuration actuators are used to configure the safety switch, then the safety switch can be configured for different functions, but the production, warehousing, and logistical effort increases significantly

Engineering Contradiction:

Improveconfiguration capabilityVSAvoidnumber of actuators

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The actuator is designed to perform multiple functions: it can both configure the safety switch via RFID data transmission and serve as an operational actuator for releasing safety functions. This eliminates the need for separate configuration actuators and operational actuators, reducing the total number of components while maintaining full configuration capability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The configuration function and operational function are merged into a single actuator unit. The actuator contains both the configuration capability (via transponder and RFID interface) and the operational capability (via guard locking element and position detection), combining what were previously separate components into one integrated unit.

Inventive Principle:

Principle #5Merging (Combining)

2Adaptability or versatility

If configuration actuators are used, then the safety switch can be configured, but the configuration is not verifiable and risks manipulation or malfunction

Engineering Contradiction:

Improveconfiguration capabilityVSAvoidconfiguration verification

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The RFID system provides automatic verification of the configuration. When the actuator is brought into the response range of the safety switch, the reading unit automatically reads the data code from the transponder and verifies the configuration. This feedback mechanism ensures that the configuration is correctly applied and prevents manipulation or malfunction.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The configuration is predetermined and stored in the transponder before the actuator is used. The data code containing the configuration information is prepared in advance in the transponder, so when the actuator approaches the safety switch, the configuration is automatically read and applied without manual intervention, preventing errors and manipulation.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If DIP switches are used for configuration, then the safety switch can be configured, but the safety switch has to be opened which is cumbersome and necessitates higher manufacturing costs and special sealing measures

Engineering Contradiction:

Improveconfiguration capabilityVSAvoidsealing requirements

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The mechanical DIP switch configuration system is replaced with an RFID-based wireless data transmission system. Instead of physically opening the safety switch housing to access and configure DIP switches, the configuration is performed wirelessly by bringing the actuator into the response range of the safety switch, eliminating the need for openings or sight windows and maintaining full sealing.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 simplifies configuration processes, reduces manufacturing costs, and enhances functional safety by allowing precise configuration settings without additional design features, preventing malfunctions and manipulations.

Implementation Method 1

the safety switch has an RFID system with a transponder integrated in the actuator and a reading unit integrated in the safety switch

Methodology Applied

Scientific EffectRFID (Radio Frequency Identification): Electromagnetic Induction

Data Source

PatentUS12191103B2Safety device

Publication Date: 2025.01.07 EUCHNER GMBH & CO KG

AI summary

A safety device (8) with a safety switch (7) and at least one actuator (9), wherein when an actuator (9) is arranged within a response range relative to the safety switch (7), signals are transmitted from the actuator (9) to the safety switch (7), by which means a function of the safety switch (7) is released. The actuator (9) is additionally designed for configuring the safety switch in that a configuration signal is transmissible from the actuator (9) to the safety switch (7).