I/O Unit Diagnosis Algorithm Storage for Industrial Safety
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Solution Overview
Problem
The existing safety control systems for industrial robots and manufacturing machines require cumbersome and error-prone diagnosis algorithms for safety devices, necessitating dedicated controllers for each device, leading to increased complexity and potential safety risks due to human errors during parameter setting and algorithm creation.
Innovation Solution
An I/O unit with a storage unit for multiple diagnosis algorithms, a specifying information storage unit, and a diagnosis unit that performs diagnostics and executes abnormality processes, allowing for a single I/O unit to manage multiple safety devices, reducing the need for multiple dedicated controllers and simplifying the diagnosis process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated controllers are used for each safety device, then diagnosis reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple diagnosis algorithms for different safety devices into a single I/O unit. The I/O unit includes a storage unit that stores multiple diagnosis algorithms corresponding to different I/O devices, and a diagnosis unit that executes the appropriate algorithm based on the connection terminal. This merging approach maintains diagnosis reliability while reducing the number of dedicated controllers needed.
Solution Approach 2:
The I/O unit is designed with multi-functionality to handle diagnosis for multiple types of safety devices through a single unit. The specifying information storage unit stores identification information for different I/O devices, and the diagnosis unit selects and executes the corresponding diagnosis algorithm, making the I/O unit universal across different device types.
2Measurement precision
If multiple dedicated controllers are deployed, then diagnosis precision is improved, but ease of operation deteriorates
Solution Approach 1:
The diagnosis system implements dynamic selection of diagnosis algorithms based on the connected I/O device type. The diagnosis unit automatically identifies the device type through specifying information and dynamically loads and executes the appropriate diagnosis algorithm, eliminating the need for manual configuration and improving ease of operation while maintaining precision.
3Adaptability or versatility
If diagnosis algorithms are created manually, then adaptability is improved, but manufacturing precision deteriorates
Solution Approach 1:
Multiple diagnosis algorithms are pre-configured and stored in the storage unit of the I/O unit during manufacturing. Each algorithm is pre-associated with specific I/O device types through specifying information. This preliminary action eliminates manual parameter setting during deployment, ensuring manufacturing precision while maintaining adaptability to different device types.
Data Source
AI summary
This invention enables setting of a diagnosis algorithm of a safety device to be easily carried out. A slice I/O unit stores a plurality of diagnosis algorithms each corresponding to a different safety device in an ASIC, and stores specifying information for specifying a diagnosis algorithm to use of the plurality of diagnosis algorithms in a register of the ASIC. The slice I/O unit performs diagnosis of a connected safety device using the diagnosis algorithm specified by the specifying information stored in the register of the plurality of diagnosis algorithms. The diagnosis algorithm to use can be selected by selecting a number, and the like, which is preferable as a setting process at a setting tool device can be facilitated and a human error does not occur.