Numerical Control Device Alarm History Optimization
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Solution Overview
Problem
Numerical control devices lack sufficient information for operators to efficiently investigate and resolve alarms, leading to varying times for alarm identification and resolution due to operator knowledge and experience differences.
Innovation Solution
A numerical control device that records and displays alarm corrective measure operation history information, optimizing it for frequency and effectiveness, allowing operators to refer to past corrective actions directly with alarm messages for quicker resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If alarm messages simply state the events that have happened, then the alarm message is easy to generate and display, but the displayed alarm messages do not provide an operator with sufficient information required to investigate the causes of the alarms
Solution Approach 1:
The system performs preliminary actions by automatically recording and analyzing operator operations during alarm resolution processes before future alarms occur. This creates a database of effective corrective measures that can be automatically retrieved and presented to operators when similar alarms occur, eliminating the need for operators to manually document or recall previous solutions.
Solution Approach 2:
The system implements feedback by presenting recorded corrective measure operations back to operators when similar alarms occur. The display unit shows previously successful operation sequences that resolved similar alarms, providing operators with actionable feedback based on historical data, thereby improving their ability to quickly resolve current alarms.
2Productivity
If an operator investigates the cause that has triggered an alarm, then the alarm can be resolved, but the time required for the operator to identify the cause or carry out an operation to release the alarm considerably varies depending on the amount of knowledge or experience of the operator
Solution Approach 1:
The system enables self-service by automatically providing operators with relevant corrective measure information without requiring external assistance or extensive personal knowledge. The numerical control device itself retrieves and displays the necessary operation history and corrective steps, allowing operators to resolve alarms independently and consistently regardless of their experience level.
Solution Approach 2:
The system uses copying by replicating successful past operations and presenting them as templates for current alarm resolution. Instead of requiring operators to recreate solutions from memory or documentation, the system copies and displays the actual operation sequences that previously resolved similar alarms, ensuring consistent and accurate replication of effective corrective measures.
3Loss of information
If only screen changing operations are recorded as history, then the recording process is simple, but it is difficult to obtain the information on the specific operation or procedure for releasing an alarm
Solution Approach 1:
The system achieves universality by creating a comprehensive recording mechanism that captures multiple types of operations simultaneously - not only screen changes but also button presses, parameter modifications, and other control actions. This multi-functional recording approach ensures that all potentially relevant operations are captured in a unified history database that can serve various analysis and retrieval purposes.
Solution Approach 2:
The system applies extraction by selectively identifying and extracting the specific operations that are most relevant to alarm resolution from the comprehensive operation history. Rather than presenting all recorded operations, the system extracts and highlights the critical corrective measure steps that directly contributed to resolving similar previous alarms, making the information actionable and concise.
Data Source
AI summary
A numerical control device includes an alarm corrective measure operation history information storage unit, an operation history information acquiring unit, an alarm corrective measure operation history information recording unit, and an alarm corrective measure operation history information extracting unit. The alarm corrective measure operation history information recording unit has an alarm corrective measure operation history information recording optimization section, which optimizes information on an operation included in generated alarm corrective measure operation history information to release an alarm, and the alarm corrective measure operation history information extracting unit has an alarm corrective measure operation history information extraction optimization section, which optimizes the extracted alarm corrective measure operation history information to release an alarm.