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Old 12-06-2012, 02:09 PM   #35
Merci Buckets
Member#: 88606
Join Date: Jun 2005
Chapter/Region: MWSOC
Location: Clarkston
2016 Cayman GTS
Dark Blue Metallic


Originally Posted by quentinberg007 View Post
Most electronics in cars are there by consumer demand. Private industry developed them because buyers wanted safer, more reliable vehicles.
Most electronics you can see in the instrument cluster and dash are there by consumer demand. The crash safety systems, stability control systems, ABS systems, and all the various additional ECU's that exist solely because government safety specifications require them are most certainly not there by consumer demand. These days any vehicle system that can cause injury with a failure has an additional ECU working with it as a back-up to protect against a failure. The ABS/stability control system has a redundant control system. The controls for the airbags would have redundant controls. Any active crash avoidance/safety systems that may apply the brakes or affect steering would have redundant controls or even secondary ECU's. The active safety stuff actually uses redundant inertial sensors too. For the sake of safety there are also redundant data buses in vehicles to protect against an error, fault, or loss of communication.

While consumers wanting their car to "work" may drive a lot of this stuff I'm pretty sure there aren't any consumers jumping up and down because their car has a redundant IMU, or a watchdog ECU on their AWD controller making sure it decouples during an ABS event to prevent from locking up the rear axle and spinning the vehicle. Most of these systems have more government driven safety and diagnostic features than actual functional control software.

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