Cruise Control Adjusting Speed via Navigation Road Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cruise control systems fail to adjust vehicle speed according to varying road conditions, such as speed limits, curves, and bumps, leading to potential speeding violations and safety concerns.
Innovation Solution
A cruise control apparatus that receives road information from a navigation device, detects wheel speeds, and adjusts vehicle speed based on deceleration information, including curve positions, turning radii, bumps, and speed limits, to maintain safe and compliant speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cruise control maintains a preset high speed (e.g., 120 km/h), then the driver can travel conveniently at a desired speed without stepping on the acceleration pedal, but the vehicle may unintentionally exceed the road speed limit (e.g., 100 km/h) and violate traffic laws
Solution Approach 1:
The cruise control system receives real-time road information from a navigation device, including speed limits of upcoming roads. The controller compares the preset cruise speed with the received speed limit information and automatically adjusts the vehicle speed to comply with traffic regulations, providing feedback-based adaptive speed control
Solution Approach 2:
The system acquires speed limit information from the navigation device in advance before the vehicle reaches the relevant road sections. This allows the cruise control to proactively adjust the vehicle speed before potential speed limit violations occur, rather than reacting after the fact
2Reliability
If the driver directly steps on the brake to reduce vehicle speed at curves or bumps, then the vehicle speed can be reduced for safety, but the driver experiences inconvenience and increased operational complexity
Solution Approach 1:
The system receives road information from the navigation device in advance, including positions of curves and bumps. The controller proactively reduces vehicle speed before the vehicle reaches these road sections, eliminating the need for the driver to reactively apply brakes and improving both safety and convenience
Solution Approach 2:
The cruise control system automatically detects road conditions (curves, bumps) from navigation data and autonomously adjusts vehicle speed without requiring driver intervention. The system serves itself by integrating navigation information with cruise control functionality, freeing the driver from manual speed adjustment operations
Data Source
AI summary
Disclosed is a cruise control method including traveling a vehicle at a speed input by a driver, receiving road information from a navigation device, confirming whether or not deceleration information is present in the road information, confirming a speed corresponding to the deceleration information if the deceleration information is present, and controlling a speed of the vehicle to the confirmed speed if the confirmed speed is greater than the input speed. If the vehicle speed exceeds the speed limit of a road, the vehicle speed is automatically reduced to below the speed limit, and a warning operation is performed. Thereby, probability of accidents due to speeding may be reduced, and it may be possible to make the driver obey the Road Traffic Act and to prevent imposition of fines due to speeding. Further, the vehicle speed is automatically reduced at bumps or curves, resulting in enhanced safety and driver convenience.