Fail-Safe Safety Control Using Smartphone Authentication Inputs
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Solution Overview
Problem
Existing safety devices in machine safety technology lack flexibility and modular structure, and often require additional fail-safe components to ensure secure operation, which can complicate design and increase hardware requirements.
Innovation Solution
A safety device with a control and evaluation unit that utilizes a terminal device, such as a smartphone, for bidirectional data transmission and authentication, allowing user inputs to be evaluated in a fail-safe manner to activate security functions, thereby eliminating the need for additional fail-safe hardware and simplifying the device structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional safety devices use additional fail-safe components to ensure secure operation, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent replaces traditional fail-safe mechanical and electronic components with a software-based authentication system running on a terminal device. The control and evaluation unit executes authentication software that verifies user credentials and device identities through bidirectional data transmission, eliminating the need for additional fail-safe hardware components while maintaining security requirements.
2Reliability
If safety devices require additional fail-safe hardware components, then security function is improved, but ease of manufacture deteriorates
Solution Approach 1:
The control and evaluation unit serves multiple functions: it controls safety device operations, performs bidirectional data transmission for authentication, executes authentication software, and generates security functions. This multi-functionality eliminates the need for separate dedicated hardware components for each security function, simplifying the overall design and manufacturing process.
3Ease of operation
If safety devices use conventional terminal devices for user interaction, then ease of operation is improved, but reliability deteriorates due to lack of fail-safe design
Solution Approach 1:
The system implements bidirectional data transmission between the terminal device and control unit, enabling continuous authentication and verification. The control unit receives authentication data from the terminal device, verifies it against stored credentials, and provides feedback through the authentication process. This feedback mechanism ensures that even though the terminal device itself is not fail-safe, the overall system maintains security through continuous verification.
Data Source
Figure 1~2
Figure 3~4b
AI summary
The invention relates to a security device (1) and a method for operating a security device (1) with a security device (2), the components of which are monitored and controlled by a fail-safe control and evaluation unit (5). An end device is provided, and bidirectional data transmission (17) can be carried out between the end device and the security device (2) such that authentication data is transmitted from the end device to the security device (2). The end device is authenticated by fail-safe evaluation of the authentication data. A sequence of user inputs entered in the end device is transmitted to the security device (2), which is then reliably compared in the control and evaluation unit (5) with a target sequence of user inputs.In the control and evaluation unit (5), a safety function is only released or activated if the entered sequence of user inputs matches the target sequence.