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Brief description

Brief description

General

The navigation system uses the Global Positioning System (GPS), which consists of 27 satellites in orbit around the Earth at a height of 20,200 km. To determine the position of the car anywhere in the world, at least 3 satellites must always be available to the user on the ground. Various systems in the car contain directional and speed sensors as well as a DVD player with digital map. These are used together with GPS to aid in navigation to the desired destination.

The 7" touch screen monitor is used partly as a control panel and partly as the main window to create and manage routes, specify routes, manage saved routes, display maps, and receive guidance as well as traffic information with text.

The navigation unit contains a GPS receiver that receives satellite signals from the GPS antenna on the roof of the car. Using these signals, it calculates the position of the car. The navigation unit has a gyro to determine in which direction the car is being driven. It also has a DVD player for digital maps.

All calculations made by the navigation unit are then sent to the radio receiver, which in turn forwards all information to the other units involved.

Main unit, navigation

The main unit of the navigation system is the DVD/navigation unit, located in the luggage compartment of the car. In addition to carrying out navigation calculations, it also contains a DVD player for the digital map and a gyro to keep track of the direction of the car.

Control panel, navigation/audio

A 7" colour monitor is centrally housed in the centre console. The lower portion of the touch screen frame contains buttons to start the system, adjust volume, select radio/CD or navigation and to make different display settings. When the system is started with the ON/OFF button, a button is used to select which part of the system is to be used. Then, all other selections, such as radio station selection or destination selection in navigation, are made using the touch screen.

Signal converter, I-bus

A signal converter is located under the control panel. This converts I-bus messages to a specially developed communication system in order to use the steering wheel buttons to increase or decrease the volume of the system as well as to increase volume as the speed of the car increases.

Main unit, audio

The radio receiver located in the luggage compartment is the receiver for navigation unit information. The radio receiver then sends the information received on to the colour monitor.

Audio amplifier

An external amplifier that is part of the Premium and Prestige audio systems is used to make voice instructions from the navigation system audible.

Speaker, dashboard

The outer speakers in the dashboard are used for voice instructions from the navigation system.

Switch, navigation/telephone

A switch located in front of the glove box is used to detect the key position and control when components can be started or switched off.

It processes the mobile phone's handsfree signal, which mutes the sound from the radio/navigation system when a call is received. It also makes it possible to increase or decrease telephone volume using the steering wheel buttons.

GPS antenna

The GPS/GSM antenna is mounted to the roof of the car. The antenna is connected to the navigation unit in the vicinity of the GPS receiver.

Communication

The various units communicate using a specially developed bus communication system.