CAN Bus Deceleration Warning Light System
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Solution Overview
Problem
Drivers following a vehicle are often unaware when the vehicle ahead is slowing down without the brake being applied, leading to potential rear-end collisions, as existing lighting systems do not provide a warning for deceleration without brake pressure.
Innovation Solution
An advanced warning lighting system that uses the vehicle's CAN bus to monitor parameters such as throttle position, speed, and distance to the forward vehicle, activating warning lights when the vehicle is slowing down, even if no brake pressure is applied, to alert following drivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional brake lighting systems are used, then the brake light illuminates when the brake is applied, but following drivers are not warned before the brake is applied
Solution Approach 1:
The system performs preliminary action by illuminating the warning light before the brake is actually applied. When the driver releases the accelerator pedal, the system detects this input and activates the warning light in advance, providing following drivers with early notice of impending deceleration. This preliminary warning allows following drivers to prepare for potential braking, improving overall roadway safety.
2Speed
If the accelerator is released to decrease speed, then the vehicle slows down, but no lighting indication is provided to following drivers
Solution Approach 1:
The system implements feedback by continuously monitoring driver inputs through the CAN bus, specifically detecting when the accelerator pedal is released. This feedback mechanism triggers the warning light to illuminate, providing visual information to following drivers about the deceleration action. The system closes the loop by translating internal vehicle state changes into external communicative signals.
3Reliability
If the warning light activates based on accelerator release, then following drivers are alerted, but the system complexity increases
Solution Approach 1:
The system achieves multi-functionality by integrating with the existing CAN bus infrastructure already present in modern vehicles. It leverages existing communication protocols and data streams (accelerator position, brake status, vehicle speed) to trigger the warning light, rather than requiring separate dedicated sensors and communication systems. This approach minimizes added complexity while providing advanced warning functionality.
Data Source
AI summary
An advanced warning light system of a vehicle of the present disclosure has a controller area network (CAN) bus for transmitting messages between a plurality of controllers. Further, the system has at least one controller configured for monitoring operations of a vehicle and the at least one controller transmits a message on the CAN bus when a monitored operation occurs on the vehicle that indicates that the vehicle is slowing down. Additionally, the system has a processor that receives the message from the CAN bus indicating that the vehicle is slowing down and transmits a signal to an advanced warning light that illuminates the advanced warning light to indicate to a driver following the vehicle that the vehicle is slowing down.