Events

The DL Smart system automatically generates Events when specific conditions or state changes are detected.

All events are stored by the system for a period of 15 months, allowing long-term analysis and traceability.

Fence voltage events

A fence voltage event is generated when the measured fence voltage crosses the 4000 V threshold. To avoid false triggers caused by short disturbances, the system evaluates the last three received measurements (over a period of 6 minutes):

Voltage drop event

• The third-most-recent value was above 4000 V.

• The two most recent values are below 4000 V.

Voltage restored event

• The third-most-recent value was below 4000 V.

• The two most recent values are above 4000 V.

This logic ensures that only persistent voltage changes generate events.

Supply voltage events

A supply voltage event is generated when the measured supply voltage crosses the 11.2 V threshold. The system evaluates the last three received measurements:

Voltage drop event

• The third-most-recent value was above 11.2 V.

• The two most recent values are below 11.2 V.

Voltage restored event

• The third-most-recent value was below 11.2 V.

• The two most recent values are above 11.2 V.

Impulse generator events

The impulse (spark) generator state is received during each communication cycle. Events are generated based on state changes:

• If the previous state was OFF and the current state is ON, an “Impulse generator turned on” event is created.

• If the previous state was ON and the current state is OFF, an “Impulse generator turned off” event is created.

• If the state remains unchanged, no event is generated.

On-line / off-line state events

The system continuously monitors device communication status. If the device does not send any data for at least 10 minutes, a “Device became off-line” event is generated.

When the server later receives data from a device that is marked as off-line, a “Device became on-line” event is generated.

Location change events

Each received GPS position is evaluated for movement detection. A location change event is created if all of the following conditions are met:

• At least three previous data records exist.

• All records contain valid GPS coordinates.

• The calculated movement distance of the last data points is greater than 50 meters.

A jitter filter is applied to remove minor GPS fluctuations. This mechanism reliably detects real device movement while ignoring GPS noise.