Data Processing Device Failsafe Suitability Verification
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Solution Overview
Problem
Conventional methods for determining the suitability of data processing devices for failsafe automation processes are inflexible, as identification codes are fixed during production and cannot be adapted for subsequent checks, especially for standardized devices like personal computers or workstations.
Innovation Solution
A method involving two independent time bases, which are compared over a predefined time period to determine deviations, initiating troubleshooting measures if the deviation exceeds or undershoots specific limit values, allowing for flexible assessment of a data processing device's suitability for failsafe automation processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If identification codes are fixed during production to enable failsafe application verification, then reliability is improved, but adaptability deteriorates because the codes cannot be adapted for subsequent checks or standardized devices
Solution Approach 1:
The patent performs suitability checks preliminarily by comparing time base deviations before the automation system is put into operation. This preliminary verification ensures that standardized devices meet failsafe requirements without requiring pre-fixed identification codes during manufacturing, thus resolving the contradiction between reliability verification and adaptability.
2Ease of manufacture
If conventional identification code methods are used, then manufacturing simplicity is maintained, but device complexity increases because standardized devices lack the required identification codes
Solution Approach 1:
The patent enables standardized devices to self-verify their suitability for failsafe applications by automatically comparing their time base deviations against predefined limits. This self-service mechanism eliminates the need for external identification codes or complex verification systems, maintaining manufacturing simplicity while reducing device complexity.
Data Source
AI summary
A method for checking a data processing device to determine its suitability for performing failsafe automation processes, wherein the data processing device includes a first and a second time base. The method comprises determining a first time value of the first time base after expiration of a time period of length T, determining a second time value of the second time base after the expiration of the time period of length T, determining a deviation between the first and the second time value, and initiating a troubleshooting measure if the deviation undershoots, i.e., undershoots or reaches, a predefined or pre-definable limit value.