Detection

The Symptoms Engine detects conditions through configurable rules evaluated against incoming data.

Detection Model

Detection rules define conditions that trigger symptoms:

• What data to evaluate
• Threshold or pattern conditions
• Time windows and durations
• Resulting symptom type and severity

Rule Types

Threshold Rules

Simple value comparisons:

• “Speed greater than 80 mph”
• “Temperature below 32°F”
• “Battery less than 20%“

Duration Rules

Conditions sustained over time:

• “Speed over limit for 5 minutes”
• “No movement for 2 hours”
• “Temperature excursion for 30 minutes”

Pattern Rules

Complex condition combinations:

• “Three harsh braking events in 10 minutes”
• “Geofence exit followed by no contact”
• “Temperature spike with door open”

Evaluation

Rules are evaluated:

• Continuously as data arrives
• Per-asset scope
• With configurable debounce

Rule Management

Rules can be:

• Defined per tenant
• Enabled/disabled dynamically
• Versioned for audit