Binary Log Display Using Prediction Bands for Anomaly Detection
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Solution Overview
Problem
Existing display methods for binary digital signal log data in factories struggle to visually depict deviations from a normal state and quantify the degree of deviation, as they only show binary values of 0 and 1, making it difficult to distinguish anomalous states.
Innovation Solution
A display apparatus that includes a memory for storing prediction data and a control unit to generate a display screen showing a prediction value area for normal states and an actual measurement value area, allowing for the visualization of deviations and their degrees when log data transitions to an anomalous state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If binary digital signal log data is displayed using conventional time-series graph methods, then the change timing from normal to anomalous state can be identified, but the deviation degree and visual distinction of anomalous states cannot be effectively displayed
Solution Approach 1:
The patent introduces a new dimension (vertical axis representing prediction accuracy or confidence level) to the traditional time-series graph. This allows binary log data to be visualized with an additional dimension of information, where the vertical position indicates the reliability of the prediction rather than just the binary value. This dimensional transformation enables simultaneous display of both the binary state and the deviation degree without losing information.
Solution Approach 2:
The patent introduces prediction data as an intermediary element between the actual binary log data and the display representation. By showing both the actual binary values and the predicted values (with associated accuracy indicators), the system creates an intermediate layer that reveals deviation degrees. The prediction accuracy metric serves as a mediator that quantifies how much the actual data deviates from expected normal behavior.
2Device complexity
If only binary values (0 and 1) are displayed in the time-series graph, then the data representation remains simple, but the ability to display deviation from normal state is lost
Solution Approach 1:
The patent segments the display information into distinct visual elements: actual binary values, predicted values, and accuracy indicators. This segmentation allows each component to be represented separately, with the accuracy component providing additional information without complicating the core binary data representation. Users can easily distinguish between normal and anomalous states by looking at the accuracy segment.
Solution Approach 2:
The patent applies local quality by adding detailed information (prediction accuracy) only where needed - specifically at points where deviation from normal state occurs. The display maintains simple binary representation for normal data points while enriching the information locally at anomalous points with accuracy indicators, thus improving anomaly detection ease without uniformly increasing overall display complexity.
Data Source
AI summary
A display apparatus that displays log data which indicates when the log data deviates from a normal state and a deviation degree is provided. The display apparatus comprises: a memory to store prediction data including a signal value of a prediction value of the log data and accuracy degree of the prediction value, and a signal value of an actual measurement value of the log data; a control unit to generate a display screen on which a prediction value area indicating an area of the log data in normal state is depicted based on the prediction data and on which a signal wavelength of the signal value of the actual measurement value is depicted based on the signal value of the actual measurement value; and a display unit to display the display screen.


