Navigation Control for Speed Bump Warning and Safe Passing
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Solution Overview
Problem
Existing navigation devices fail to provide warnings or safety speeds for drivers approaching speed bumps, leading to potential vehicle damage or passenger injury due to excessive speed.
Innovation Solution
An apparatus and method utilizing GPS, sensors, and a controller to detect speed bumps, calculate recommended speeds based on bump details, and generate warning messages if the vehicle's speed exceeds the recommended limit, also identifying dummy speed bumps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing navigation devices only inform drivers of upcoming speed bumps without providing warnings or safety speeds, then the device complexity is reduced, but vehicle damage and passenger injury may occur due to excessive speed
Solution Approach 1:
The system performs preliminary actions by detecting speed bumps in advance using GPS and map data, calculating recommended safe speeds before the vehicle reaches the speed bump, and providing warnings to the driver. This allows the driver to slow down before encountering the speed bump, preventing damage and injury while maintaining simple device architecture
Solution Approach 2:
The system implements feedback by continuously monitoring the vehicle's current speed via sensors, comparing it with the pre-calculated recommended safe speed, and providing real-time warnings to the driver when the vehicle speed exceeds the safe limit. This closed-loop feedback ensures vehicle safety without requiring complex active control mechanisms
2Measurement precision
If the navigation device provides detailed information about speed bumps including curvature, height, and width, then the measurement precision is improved, but the loss of information processing increases
Solution Approach 1:
The system extracts only the essential parameters needed for safety calculations from the detailed speed bump information. While the sensor detects comprehensive details including curvature, height, and width, the controller selectively uses only the necessary parameters (such as height and position) to calculate the recommended safe speed, discarding redundant information and minimizing data processing load
Solution Approach 2:
The system applies different levels of information processing to different aspects of speed bump detection. Detailed geometric parameters are processed only when necessary for calculating safe speed, while other aspects such as basic location and presence detection use simpler processing methods, optimizing the balance between precision and computational efficiency
Data Source
AI summary
An apparatus for navigation control includes: a GPS configured to locate a current position of a vehicle and a speed bump ahead of the vehicle; a sensor configured to acquire detailed information of the speed bump and a current speed of the vehicle; a controller configured to locate the current position of the vehicle to divide a distance from the current position to the speed bump into one or more regions, to check the current speed of the vehicle, to calculate a recommended speed for passing over the speed bump based on the detailed information of the speed bump, and to generate a warning message if the current speed is above the recommended speed; and an outputter configured to output the warning message under control of the controller.