Vehicle Danger Notification Using Stereo Camera Object Detection
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Solution Overview
Problem
Conventional vehicle warning systems fail to detect pedestrians behind stopped vehicles without communication terminals and may issue inaccurate warnings due to GPS position information accuracy.
Innovation Solution
A vehicle danger notification control apparatus that uses stereo cameras to recognize moving objects, determines potential collisions between vehicles and pedestrians, and notifies drivers or pedestrians of dangers using existing vehicle components like headlights or horns, without requiring a communication terminal on the pedestrian.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If GPS-based position information is used for warning determination, then the system can operate without communication terminals on pedestrians, but false warnings may be issued or necessary warnings may fail due to accuracy limitations
Solution Approach 1:
The patent introduces a communication terminal carried by the pedestrian as an intermediary device. This terminal collects precise position information from GPS and other sensors, then transmits it to the vehicle's warning apparatus. The intermediary resolves the contradiction by providing accurate pedestrian position data without requiring complex infrastructure modifications, enabling reliable warning determination while maintaining ease of system deployment.
Solution Approach 2:
The patent replaces the vehicle-based detection system (mechanical/optical sensors on the vehicle) with a pedestrian-based reporting system using communication terminals. Instead of the vehicle actively detecting pedestrians through sensors, the system substitutes this with pedestrians actively reporting their positions through communication terminals, thereby achieving both ease of implementation and high precision.
2Difficulty of detecting and measuring
If conventional radar or camera systems are used on the running vehicle, then the system can detect objects in front of the vehicle, but pedestrians behind stopped vehicles in blind areas cannot be detected
Solution Approach 1:
The patent transitions from a vehicle-centered detection paradigm to a pedestrian-centered reporting paradigm. Instead of the vehicle's sensors attempting to detect pedestrians in all directions (including blind areas), the system enables pedestrians to report their positions from their own perspective, effectively adding a new dimensional approach to detection that overcomes the limitations of vehicle-mounted sensors.
Solution Approach 2:
The communication terminal acts as an intermediary that bridges the detection gap in blind areas. When the vehicle's forward-facing sensors cannot detect a pedestrian behind a stopped vehicle, the pedestrian's communication terminal serves as an intermediary information source, transmitting the pedestrian's position data to the vehicle's warning apparatus, thereby ensuring reliable detection regardless of the vehicle's sensor orientation.
3Measurement precision
If the vehicle warning apparatus processes position information from multiple sources, then detection accuracy improves, but the device complexity increases
Solution Approach 1:
The patent extracts the complex position information processing functions from the vehicle's warning apparatus and relocates them to the pedestrian's communication terminal. The terminal handles GPS reception, position calculation, and data transmission, while the vehicle's apparatus only needs to receive and process the already-calculated position data. This extraction reduces the vehicle apparatus's complexity while maintaining high detection accuracy.
Solution Approach 2:
The communication terminal performs self-service by autonomously collecting position information from GPS and other sensors, calculating the pedestrian's position, and transmitting it to the vehicle. This self-service capability eliminates the need for the vehicle's apparatus to implement complex detection and tracking algorithms, thereby reducing device complexity while preserving measurement precision.
Data Source
AI summary
A pedestrian and a driver of a running vehicle that are in the vicinity of a stopped vehicle are notified of a danger of collision with a vehicle, without requiring the pedestrian to carry a communication terminal. A vehicle danger notification control apparatus includes an outside recognition arrangement for recognizing a running vehicle and/or a pedestrian as a moving object(s), a danger determination arrangement for determining whether there is a danger of collision(s) between the running vehicle and the pedestrian and/or between the running vehicles, and a danger notification arrangement for notifying, in a case in which the danger determination means determines that there is a collision danger, a driver of the running vehicle and/or the pedestrian of the collision danger.