Collision Avoidance via Inter-Vehicle Position Prediction
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Solution Overview
Problem
Existing collision avoidance systems struggle to quickly detect mobile bodies, such as oncoming two-wheeled vehicles or those approaching from the rear, which can lead to increased collision risks.
Innovation Solution
A collision avoidance apparatus comprising a first information acquisition unit, a second information acquisition unit, a first mobile body prediction unit, a second mobile body prediction unit, a judgment unit, and a signal outputting unit, which generates and predicts positions of mobile bodies at future time points, allowing for the output of specific signals to mitigate collision risks even if direct detection is not possible.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor is installed on the host vehicle to detect mobile bodies, then the system can detect objects in the vicinity, but it fails to quickly detect oncoming two-wheeled vehicles or vehicles approaching from the rear
Solution Approach 1:
The patent introduces an information transmitting apparatus as an intermediary component that transmits mobile body information to other vehicles. This mediator enables vehicles to obtain detection data from external sources, compensating for the limitations of onboard sensors in detecting certain mobile bodies like oncoming two-wheeled vehicles or rear-approaching vehicles.
Solution Approach 2:
The system transitions from relying solely on local sensor detection to incorporating information from external transmission sources. By adding this new dimension of information acquisition through communication channels, the system overcomes the spatial and angular limitations of physical sensors mounted on the host vehicle.
2Reliability
If the system relies on direct sensor detection, then it can identify objects within sensor range, but it cannot detect mobile bodies that are outside the sensor's detection capability
Solution Approach 1:
The information transmitting apparatus serves multiple functions: it transmits mobile body information to other vehicles, enables cross-vehicle awareness, and supplements the detection capabilities of individual vehicles. This multi-functional component enhances both the reliability and adaptability of the collision avoidance system across diverse scenarios.
Data Source
AI summary
In a collision avoidance apparatus (1), a first information acquisition unit (7) generates first information that includes the position, speed and advancement direction of a first mobile body, and obtains first information from a first information transmitting unit (1) having a transmitting function. A second information acquisition unit (9) obtains second information that includes the position, speed and advancement direction of a second mobile body. A first mobile body prediction unit (11) predicts positions (P1) of the first mobile body at future time points T, based on the first information, and a second mobile body prediction unit (13) predicts the positions (P2) of the second mobile body at the time points T, based on the second information. A judgement unit (15) judges whether or not the positions (P1) of the first mobile body and the positions (P2) of the second mobile body satisfy predetermined conditions, and if the conditions are satisfied, a signal outputting unit (17) outputs a signal which is specific to that case.