4 ms·
Why would you need an accelerometer when you've got perfectly good tacho pulses from the ABS rings?
by Gordonjcp 3y ago
Why would you need an accelerometer when you've got perfectly good tacho pulses from the ABS rings?
- mindslight 3y agoAFAIK ABS modules already have accelerometers. If I had to guess it falls into the domain of the ABS module, and it's just easier to talk about it as an accelerometer, when it's really using multiple inputs (wheel speed sensors can fail). I hope whatever new regulation is intelligent enough to not consider the deceleration from coasting up a hill to be part of triggering the brake lights. Brake lights should only come on when there is deceleration beyond what you'd expect from a naturally rolling car.
- Gordonjcp 3y agoOne would assume it's not a difficult process to model. If the driver presses the brake, put the brake lights on. If the driver lifts off the throttle in heavy regen mode and the vehicle slows faster than <some amount> put the brake light on. If the vehicle slows faster than <some amount> with the throttle "off idle", do not put the brake light on.