Window-Mounted Vehicle Speed Display for Tailgating Reduction
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Solution Overview
Problem
Tailgating, which increases the risk of rear-end collisions, occurs due to drivers not realizing they are following vehicles too closely, either inadvertently or due to aggressive driving, and existing technologies do not effectively address this issue by providing a public display of speed.
Innovation Solution
A vehicle speed display device mounted on a car's window that publicly shows the current speed, using a microcontroller to process speed information and display it via LED or LCD displays, optionally with a GPS module to track position and calculate speed, aiming to calm aggressive drivers by showing the lead car is maintaining the legal speed limit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vehicle speed display device is mounted on the window to publicly display speed, then the effectiveness of reducing tailgating is improved, but the device complexity increases
Solution Approach 1:
The display device integrates multiple functions into a single unit: it receives speed data from the vehicle's existing speed sensor, processes the data through a microcontroller, and displays it using either LED or LCD technology. This multi-functional integration resolves the contradiction by consolidating what would otherwise be separate systems into one compact device mounted on the window.
Solution Approach 2:
The patent introduces a microcontroller as an intermediary component that bridges the vehicle's speed sensor and the display module. This intermediary processes the raw speed data and converts it into a format suitable for public display, enabling the system to function without requiring direct integration between the sensor and display components.
2Measurement precision
If GPS module is added to track position and calculate speed, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent offers two approaches to speed measurement: using the vehicle's existing speed sensor data, or using a GPS module to independently calculate speed from position data. The GPS approach acts as a redundant copy of the speed measurement function, providing alternative data sources that can verify or supplement the primary sensor readings, thereby improving measurement precision without requiring modification of the vehicle's existing systems.
Data Source
AI summary
The vehicle speed display is a device that is adapted to be mounted on the window of an automobile that publically displays the current speed of the automobile. This public display of speed is used to send a calming signal aggressive drivers that the lead car is maintaining their speed under the legal speed limit. The vehicle speed display comprises a logic module, a display module, a power module and a housing.