CAN bus
#1
09-22-2010, 06:38 PM
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09-22-2010, 08:01 PM
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09-22-2010, 08:14 PM
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#8
09-22-2010, 09:39 PM
this is what i found
A modern automobile may have as many as 70 electronic control units (ECU) for various subsystems[3]. Typically the biggest processor is the engine control unit, which is also referred to as "ECU" in the context of automobiles; others are used for transmission, airbags, antilock braking, cruise control, audio systems, windows, doors, mirror adjustment, etc. Some of these form independent subsystems, but communications among others are essential. A subsystem may need to control actuators or receive feedback from sensors. The CAN standard was devised to fill this need.
The CAN bus may be used in vehicles to connect engine control unit and transmission, or (on a different bus) to connect the door locks, climate control, seat control, etc. Today the CAN bus is also used as a fieldbus in general automation environments, primarily due to the low cost of some CAN Controllers and processors.
Bosch holds patents on the technology, and manufacturers of CAN-compatible microprocessors pay license fees to Bosch, which are normally passed on to the customer in the price of the chip. Manufacturers of products with custom ASICs or FPGAs containing CAN-compatible modules may need to pay a fee for the CAN Protocol License
A modern automobile may have as many as 70 electronic control units (ECU) for various subsystems[3]. Typically the biggest processor is the engine control unit, which is also referred to as "ECU" in the context of automobiles; others are used for transmission, airbags, antilock braking, cruise control, audio systems, windows, doors, mirror adjustment, etc. Some of these form independent subsystems, but communications among others are essential. A subsystem may need to control actuators or receive feedback from sensors. The CAN standard was devised to fill this need.
The CAN bus may be used in vehicles to connect engine control unit and transmission, or (on a different bus) to connect the door locks, climate control, seat control, etc. Today the CAN bus is also used as a fieldbus in general automation environments, primarily due to the low cost of some CAN Controllers and processors.
Bosch holds patents on the technology, and manufacturers of CAN-compatible microprocessors pay license fees to Bosch, which are normally passed on to the customer in the price of the chip. Manufacturers of products with custom ASICs or FPGAs containing CAN-compatible modules may need to pay a fee for the CAN Protocol License
#9
09-25-2010, 03:13 PM
What do you mean by "our trucks?"
Powerstrokes
or something else?
I'm asking because I was wondering if you can use the same sensors that we have now, with a CAN computer or if all sensors need to be CAN "compatible?"
Powerstrokes
or something else?
I'm asking because I was wondering if you can use the same sensors that we have now, with a CAN computer or if all sensors need to be CAN "compatible?"
#10
09-25-2010, 10:09 PM
CAN is the newest data standard for the OBD system.
Controller area network - Wikipedia, the free encyclopedia
OBDII sensors talk to the computer, looks like CAN sensors talk to the computer and each other.
From what I have read, a change to the CAN system from OBDII would take a complete rewire of the vehicle.
Controller area network - Wikipedia, the free encyclopedia
OBDII sensors talk to the computer, looks like CAN sensors talk to the computer and each other.
From what I have read, a change to the CAN system from OBDII would take a complete rewire of the vehicle.
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