Vehicle Overtaking Safety System Using Radar and Camera Sensors
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Solution Overview
Problem
Existing vehicle safety systems are inadequate in determining safe overtaking maneuvers, particularly when considering the presence and movement of preceding and oncoming vehicles, road conditions, and environmental factors, which can lead to unsafe overtaking attempts.
Innovation Solution
A safety system that uses sensing means, such as radar and optical camera detectors, to gather data on preceding and oncoming vehicles, combined with vehicle information and environmental factors, to generate a result signal indicating whether it is safe to overtake, taking into account distance, speed, acceleration, and road conditions, and controlling the vehicle's steering, braking, and acceleration accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the vehicle attempts to overtake the preceding vehicle, then the overtaking maneuver can be completed, but the risk of collision with oncoming vehicle increases
Solution Approach 1:
The system performs preliminary detection of oncoming vehicles and calculates safe overtaking windows before the overtaking maneuver is initiated. The controller continuously monitors the distance and speed of oncoming vehicles and only permits overtaking when a safe time window is identified, preventing unsafe maneuvers before they can cause harm.
Solution Approach 2:
The system provides continuous feedback to the driver through visual, auditory, or haptic signals indicating whether overtaking is safe at any given moment. The controller processes real-time sensor data and communicates the safety status, allowing the driver to make informed decisions about when to initiate or abort an overtaking maneuver.
2Measurement precision
If the sensing means detects more characteristics of preceding and oncoming vehicles, then the safety determination becomes more accurate, but the system complexity increases
Solution Approach 1:
The sensing means is designed to perform multiple functions using the same hardware components. The radar or camera system detects not only the presence of vehicles but also calculates their distance, speed, and acceleration by analyzing changes in the reflected signals or image sequences over time, eliminating the need for separate sensors for each measurement.
Solution Approach 2:
The system combines multiple sensing technologies (radar and optical camera) into a single integrated sensing means that shares processing resources and control logic. This consolidation reduces overall system complexity while maintaining the ability to extract multiple characteristics from the same sensor inputs.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances vehicle safety by determining if an overtaking maneuver is safe, reducing the risk of collisions with oncoming vehicles and ensuring a safe return to the original lane, thereby improving overall driving safety across various conditions.
Implementation Method 1
The sensing means may a single sensor or multiple sensors. It may comprise a radar detector apparatus, which may view a scene in front of the vehicle as the vehicle is travelling in a forward direction along the highway.
Implementation Method 2
In addition, or alternatively, the sensing means may comprise an optical camera detector apparatus that identifies objects in the scene and from changes in the appearance of the object over time determines the range and movement of the objects.
Data Source
AI summary
A safety system for a vehicle comprises a sensing means which is arranged to determine the presence of a preceding vehicle and, where present, to produce at least one first output signal representative of one or more characteristics of the preceding vehicle, the sensing means also being arranged to determine the presence of an oncoming vehicle and, where present, to produce at least one second output signal representative of one or more characteristics of the oncoming vehicle, and a controller which is arranged to receive the output signals from the sensing means, and from the signals to generate a result signal indicative that it is possible for the vehicle to safely overtake the preceding vehicle before the oncoming vehicle blocks the path along which the vehicle must travel to complete the overtaking maneuver.