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From the Saab Media Site (long) Posted by Ian Glenday [Email]  (#95)  [Profile/Gallery]
(more from Ian Glenday) on Tue, 11 Feb 2003 19:26:16
In Reply to: new fiber optics?, MJP, Tue, 11 Feb 2003 17:49:18 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Judge for yourself. Here is a description of the entire network.
"All major mechanical and electrical functions in the new 9-3, including numerous driver and passenger comfort features, are precisely and reliably controlled through an advanced digital signal network.
It incorporates the auto industry’s most extensive systems application of fiber optic technology. This provides a signal capacity 50 times greater than the fastest conventional wire links and offers a secure platform for the application of advances in telematics, enabling new 9-3 owners to conveniently install new functions.
The entire electronic and electrical network uses databus transmission – often referred to a ‘multiplexing’ – to connect groups of electrical subsystems and pass on signals from all the car’s sensors. In this way, a CANBUS (Controller Area Network) uses just one or two wires with microprocessors, transistors and LEDs (Light Emitting Diodes) to replace a complicated wiring harness and all its associated relays, switches and bulbs.
CANBUS technology offers great benefits in weight saving, reliability and data transmission capacity. It is used to connect the new 9-3’s main subsystems: powertrain, chassis, body, ‘infotainment’, telematics, navigation and climate and comfort.
Smart Networking
A battery of sensors are the ‘nerve endings’ of the new 9-3 and the data they provide is dispatched as packages of digital signals, or ‘buses’, along three information ‘highways’, stopping where required at 44 sub-stations, or microprocessors, for analysis and subsequent action.
A powerful control module governs each of these highways and their substations; all three integrated with each other to ensure there are no ‘traffic jams’ or conflicting requirements.
If all the functionality of new 9-3 were to be achieved using a traditional, complex wiring harness, it would weigh twice as much, more than at 40 kilos, and be twice as long, at 1,600 meters.
A single wire highway, or ‘low speed’ Bus, with a capacity of 33 kbits per second, connects functions within the car: the ignition switch, steering column lock, airbags, the main instrument panel, interior lighting, doors, mirrors, windows, security alarm, gear shift position and, where fitted, the sunroof, electrically-operated seats and parking assistance.
Powertrain control, the Trionic 8 engine management system, ABS, TCS, ESP and related functions are all connected by a dual wire, ‘high speed’ Bus, with a transmission capacity 15 times greater at 500 kbits per second.
Fiber Optic Innovation
The third highway is the largest yet fitted to a passenger car, using fiber optics instead of wire to give a massive capacity of 25 Mbits per second, 50 times greater than that of a dual wire bus. It is utilized by all three audio system options (see ‘Interior’ section for details) and, where fitted, the integrated GSM telephone, which features voice control, the GPS navigation system with DVD reader and the OnStar telematics service (US market only).
The fast moving world of information technology is likely to place increasing demands on the ‘in-car’ time of drivers and passengers and the new Saab 9-3 is configured to accommodate all likely future developments in digital communication to and from the car.
Well Connected
Saab is one of the first auto manufacturers to introduce Bluetooth™* wireless technology, which uses a short range, low frequency radio link to replace cable connections for mobile devices, PDAs (Personal Digital Assistants) and other peripherals."
posted by 24.170.177...
_______________________________________ Ian 1959 93b 1967 96V4 1968 99 1974 99L 1988 900S 1988 900 1994 900S 1996 900S 1999 9-5SE, 2.3lpt 1995 9000 CSE 2006 9-3SC, 2.0T
, Tue, 11 Feb 2003 15:52:22, Tue, 11 Feb 2003 19:26:16 <-- Viewing This Message
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