How It Works
Download a How it Works illustration (PDF).
The RoadEye unit monitors the GPS position and ignition inputs of the vehicle every second. Positional points and status information are sent to the central server via the GPRS network at intervals from 5 seconds, depending on the current logging interval set by the server. The typical logging frequency of the system is preset to 30 seconds.
Each point sent to the server is backed-up on the unit in non-volatile FLASH memory and the unit can store up to 2 weeks of logging information* even if the power is removed. The server automatically retrieves logging positions from the RoadEye unit which may not have been sent originally to the server due to poor network coverage, etc.
An ignition input is used to sense when the vehicle has stopped or has just been started. A change in the status of the ignition is sent immediately to the server.
When the ignition is off, the Roadeye unit enters a lower power mode to reduce the power drain on the vehicle’s battery. In this mode, a position is sent once every 24 hours to ensure the vehicle hasn’t moved or the battery supply hasn’t been disconnected.
A second input can be used to check the status of vehicle doors or Power Take Off units or it can be linked into other existing security systems.
There are two Relay outputs that can be used to control DC loads of up to 10 Amps at 24vDC. These relays are controlled from messages sent from the server. They could be used to immobilise vehicles ‘out of hours’.
The RoadEye unit can be connected to the Driver Data Terminal and Driver ID, allowing two-way messaging and driver identification/authorisation.
* Typical logging frequency of 30 seconds and driving for 6 hours per day, 6 days a week
