|The Hawkeye AVLS comprises of:
The Hawkeye hardware unit in the Vehicle computes an exact latitude and longitude position when it receives data from at least 3 GPS satellites.
- A Hardware unit which is mounted in the vehicle
- A Control Station run by the service provider
- A Server on the Internet which displays the position of the vehicle
This position and certain other data such as heading (direction), speed and time are encoded, compressed and sent by SMS to the Control station.
The Control station sends the decoded data from the Vehicle to the Web server. The Web server displays the position of the vehicle together with any other data specified, on the map. The data is also stored in a database, so that it can be played back and a record kept for future use.
- The time interval between SMS messages can be set or changed from the Control Station or the end user's screen.
- It is possible to have SMS set to an 'On Demand' mode. This is useful in scenarios where continuous monitoring is not required. Whenever it is necessary to track the vehicle, a command is sent out from the Control station / end user and the current location of the vehicle is plotted on the screen. This reduces the cost of SMS drastically.
- Data is sent in an encrypted format, so it cannot be decoded by anybody except the intended receiver.
- Data is sent in a compressed form. This allows us to send data for at least 20 positions in one SMS. Hence, if the frequency of SMS messages is set at 1 hour, when one SMS message is received by the Control Station, it updates the last 20 positions the vehicle has traveled, on the map (one position every 3 minutes).
- Besides time, speed, position and heading, other parameters can also be monitored and the data sent in the SMS eg temperature in Reefer vans etc.
When a client logs into the web server, he is identified through his user name and password.
- The client is then presented with a list of vehicles he is permitted to view.
- The client can select the vehicles he would like to track.
- Vehicles can be identified by giving them different colour icons.
- There is an option to view the history/track of the previous positions on the current route, e.g. one can choose to view the last 5 positions, 100 positions (any number) etc. for a particular vehicle. The map will then display the current location of the vehicle (which will be constantly updated) together with specified number of previous positions selected.
- The map has various 'zoom' levels which allows one to view a smaller area of the map in greater detail. On zooming into areas of the map, landmarks and
- There is an option to turn the 'Pan' feature On and Off. When the 'Pan' feature is On, the map is updated to keep the vehicle in view. When the Pan feature is Off, the user can view other parts of the map, regardless of whether the vehicle being tracked is on the screen or not. The user may choose to turn the Pan feature Off to view the previous route history, or to view another vehicle.