Camera Detection Range Control for Safer Vehicle Departure
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Solution Overview
Problem
When a host vehicle departs following a preceding vehicle from a stopped state, it is challenging to detect objects that may enter in front of the host vehicle effectively.
Innovation Solution
The driving assistance method involves setting a detection range for sensors that is extended in the vehicle width direction when the host vehicle is stopped, compared to when it is traveling, to enhance the detection of objects in front.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the detection range is extended in the vehicle width direction when the host vehicle is stopped, then the ability to detect objects that may enter in front of the host vehicle is improved, but the device complexity increases
Solution Approach 1:
The detection range is made dynamic by automatically adjusting its width based on the host vehicle's operational state (stopped vs. traveling). When the vehicle is stopped, the detection range extends in the vehicle width direction to cover areas where objects might enter. When traveling, the detection range returns to a narrower configuration. This dynamic adjustment resolves the contradiction by providing enhanced detection capability only when needed, without permanently increasing system complexity.
Solution Approach 2:
The system changes the detection range parameter (specifically the width in the vehicle width direction) based on the host vehicle's state. By monitoring whether the vehicle is stopped or traveling, the system adjusts the detection range parameters accordingly, enabling comprehensive object detection during stopping while maintaining simpler operation during normal travel.
2Reliability
If the detection range is extended when the host vehicle is stopped, then safety is improved by detecting pedestrians and other objects, but the processing load and computational requirements increase
Solution Approach 1:
The system employs periodic or state-based adjustment of the detection range rather than maintaining a constantly extended range. The detection range is extended only during the specific period when the host vehicle is stopped, and returns to normal during travel. This periodic activation reduces overall processing energy requirements while maintaining safety during critical stopping periods.
Data Source
AI summary
A driving assistance device includes: a sensor (camera) configured to detect an object in front of a host vehicle; and a controller. The controller sets a detection range of the sensor (camera), and when the host vehicle is stopped, the controller extends the detection range in a vehicle width direction as compared with when the host vehicle is traveling following the preceding vehicle.