Section Overspeed Warning System Using Average Speed Calculation
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Solution Overview
Problem
Existing navigation systems are ineffective in warning drivers of overspeed violations in sections where average speed is regulated, as they primarily rely on specific position-based speed limits rather than measuring average speed over a specific section.
Innovation Solution
A section overspeed warning apparatus and system that includes a distance detecting unit, time detecting unit, speed detecting unit, and an overspeed information output unit, which calculate the vehicle's speed relative to the speed limit of a specific section by determining travel distance, remaining distance, and travel time, and outputs a warning message when the speed exceeds the limit, recommending a safe speed to avoid violation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a navigation device uses a known overspeed warning method based on specific position speed limits, then the driver can be warned of overspeed at specific positions, but the method cannot effectively regulate average speed over a specific section
Solution Approach 1:
The system divides the road into specific sections with defined start and end positions, and separately handles speed monitoring for each section. The overspeed determination is segmented into multiple calculation steps: detecting current position, calculating remaining distance to section end, detecting travel time, and computing average speed for the section. This segmentation enables effective section-based speed regulation while maintaining precise speed measurement capabilities.
2Loss of information
If the navigation device provides speed limit information for specific positions, then the driver can observe speed limits at those positions, but the device cannot warn the driver of average speed violations in a section
Solution Approach 1:
The system continuously monitors the vehicle's position, speed, and travel time within a section, and provides real-time feedback to the driver. The overspeed information output unit compares the calculated average speed with the speed limit and outputs warnings when violations are detected. This feedback mechanism ensures both comprehensive information provision and reliable overspeed warning for section-based regulation.
3Device complexity
If the navigation device uses simple speed detection, then the device structure remains simple, but it cannot determine whether the vehicle will exceed the speed limit in a section
Solution Approach 1:
The system performs preliminary detection of various parameters (current position, remaining distance to section end, travel time, current speed) before the vehicle reaches the section end. Based on these preliminary detections, the speed determining unit calculates whether the average speed will exceed the limit and provides advance warning to the driver. This approach enables accurate average speed calculation without requiring complex real-time intervention mechanisms.
Data Source
AI summary
In a section overspeed regulating method of determining whether a vehicle overspeeds on the basis of whether an average speed of the vehicle in a regulation section exceeds a speed limit, the section overspeed warning apparatus and system determine whether the current speed of the vehicle traveling on a regulation section exceeds the speed limit, and warn a driver. Whether the speed of the vehicle traveling on the regulation section exceeds the speed limit of the section is determined depending on a travel distance from a starting position of the regulation section to a current position of the vehicle, a travel time taken for the vehicle to travel by the travel distance, and a remaining distance from the current position of the vehicle to an end position of the regulation section. If it is determined that the current position of the vehicle will exceed the speed limit of the section, overspeed warning messages are output in the form of text, voice, or warning sound. Further, the section overspeed warning apparatus and system recommend the maximum speed, which allows the vehicle not to violate the speed limit of the section at the current position, to a driver as a recommended speed.