CAN-Bus Explained
CAN-Bus, developed by the Robert Bosch company, is essentially a communications network for vehicles, not dissimilar to an office computer network. Most modern vehicles are fitted with 2 or more CAN-Bus backbones, to which all devices, such as ABS, EMS (Engine Management Systems) and sensors, are attached. The CAN-Bus relays digital control signals to all devices, obviating the need to have every switch or control hard-wired to a corresponding device via expensive wiring looms. Every device is simply attached to the CAN-Bus and a power supply. The result is less wiring, weight and more efficiency in vehicle design and build complexity.
So what do you do if an after-market device that you want to attach to a vehicle, such as sirens and flashing lights, aren’t CAN-Bus enabled?
Simple. Connect them via the Impart iCAN system, which uses the CAN-Bus network on the vehicle to transport power and control signals.
Saves cabling, weight, time and money!
Better still, by integrating with the existing CAN-Bus system, features such as safety interlocks, ABS and Traction Control, aren’t bypassed by ad hoc, non-integrated wiring systems.
There are typically 2 or 3 application-specific CAN-Bus networks on a vehicle:
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High Speed CAN-Bus #1 |
Engine Management System, Transmission |
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High Speed CAN-Bus #2 |
SRS, ABS, TCS etc |
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Low Speed CAN-Bus |
Doors, Climate Control, Electric Windows etc |
On many modern Trucks and Buses there is an additional CAN-Bus available to the Vehicle Body Builder. This is known as the BWS or Body Workers System interface.
The BWS allows Motor Vehicle Body Builders to easily interface into relevant systems and provide data equivalent to that traditionally received via standard wiring methods, i.e. piggy backing onto existing sensors. For example, if you want information such as the engine temperature, oil pressure or whether the handbrake is engaged, you simply connect to the CAN-Bus and read the encoded signal.
iCAN provides the interface to the digital CAN-Bus vehicle network, whether the after-market device you wish to add is CAN-Bus enabled or not.
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