Threshold Detector

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Description

The Threshold Detector processor monitors numerical values and detects when they cross specified thresholds. It:

• Compares numerical values against a threshold
• Appends a boolean flag indicating threshold status
• Supports various comparison operations
• Preserves all input data while adding threshold information

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Required Input

The processor requires an input event stream containing at least one numerical field to monitor.

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Configuration

Field

Select the numerical field to monitor for threshold crossing.

Operation

Choose from six comparison operations:

• < (Less than)
• <= (Less than or equal)
• > (Greater than)
• >= (Greater than or equal)
• == (Equal)
• != (Not equal)

Threshold Value

Specify the numerical threshold value to compare against.

Output

The processor forwards the input event with an additional boolean field thresholdDetected indicating whether the threshold condition was met.

Example

Input Event

{
  "temperature": 25.5,
  "humidity": 60,
  "timestamp": 1586380104915
}

Configuration

• Field: temperature
• Operation: >
• Threshold Value: 25.0

Output Event

{
  "temperature": 25.5,
  "humidity": 60,
  "timestamp": 1586380104915,
  "thresholdDetected": true
}

Use Cases

1. Monitoring & Alerting

   • Monitor sensor readings
   • Detect threshold crossings
   • Trigger alerts
   • Track value ranges

2. Quality Control

   • Monitor process parameters
   • Detect out-of-range values
   • Ensure quality standards
   • Track compliance

3. Data Analysis

   • Analyze value distributions
   • Track threshold events
   • Monitor trends
   • Identify patterns

Notes

• The processor preserves all input fields
• The thresholdDetected field is always appended
• Floating-point comparisons use a small epsilon (0.000001) for equality
• All events are forwarded, regardless of threshold status
• The threshold check is performed on the exact numerical value