Vehicle Object Detection Using Sensor Fusion for False Alarm Reduction
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Solution Overview
Problem
Existing vehicle detection systems using ultrasonic sensors risk issuing unnecessary warnings when detecting oncoming vehicles, leading to incorrect contact avoidance processing.
Innovation Solution
An object detection apparatus with a lateral sensor that transmits and receives probe waves, acquiring distance information and integrating it with imaging camera data to determine if an object is a moving vehicle, thereby avoiding unnecessary contact avoidance processing by adjusting the storage and deletion conditions of distance information based on the object's movement status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If distance information from lateral sensor is used for contact avoidance processing, then contact avoidance capability is improved, but false detection of oncoming vehicles increases
Solution Approach 1:
The patent combines distance information from the lateral sensor with image information from the imaging camera to perform integrated object determination. This merging of multiple information sources allows the system to distinguish between stationary objects (which should trigger contact avoidance) and moving oncoming vehicles (which should not), thereby resolving the contradiction between improving contact avoidance capability and reducing false detections.
2Reliability
If contact avoidance processing is executed for all detected objects, then safety is improved, but unnecessary warnings increase
Solution Approach 1:
The system performs preliminary determination of whether an object is a target for contact avoidance processing before executing the actual contact avoidance action. By using image information to preliminarily assess whether the object is stationary or moving away, the system可以避免 unnecessary warnings while maintaining safety for genuine threats.
3Area of stationary object
If lateral sensor continuously monitors all lateral areas, then detection coverage is improved, but false detection of passing vehicles increases
Solution Approach 1:
The patent applies different processing qualities to different detection scenarios. For objects in the lateral monitoring area, the system uses image information to determine local characteristics (whether the object is stationary or moving). This allows the system to maintain wide detection coverage while accurately discriminating between legitimate targets and passing vehicles based on their specific motion characteristics.
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
Effectively reduces unnecessary contact avoidance operations by accurately distinguishing between stationary and moving objects, optimizing the information history used for contact avoidance processing.
Implementation Method 1
a lateral sensor that is provided to a side part of a vehicle and that transmits probe waves and receives reflected waves corresponding to the probe waves
Data Source
AI summary
An ECU is applied to a vehicle system that is provided with lateral sensors which acquire distance information expressing a distance to an object that is located at a position on a lateral side of a vehicle. When distance information on the object is acquired by the lateral sensors, a judgement is made by the ECU as to whether or not the object is a predetermined moving object that moves relative to the vehicle. The ECU determines that the object is a target to be subjected to contact avoidance processing for avoiding contact with the object, based on a result of judging whether or not the object for which the distance information is acquired is a moving object.