Vehicle Object Detection Using Ultrasonic and Radar Sensor Fusion
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Solution Overview
Problem
Existing vehicle detection systems using ultrasonic sensors face challenges in accurately distinguishing between actual objects and mis-detected objects due to structure reflection and noise, particularly in short-range and long-range areas.
Innovation Solution
A vehicle control apparatus and method that utilize a combination of direct and indirect sensing data from multiple sensors, including ultrasonic and radar sensors, to determine the presence of objects by comparing distance values with preset reference values, thereby improving detection accuracy in both short-range and long-range areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ultrasonic sensor is used for object detection, then detection capability is provided, but mis-detection occurs in short-range area due to structure reflection and noise
Solution Approach 1:
The patent combines direct sensing data from ultrasonic sensors with indirect sensing data from radar sensors to perform object detection. By merging the detection results from multiple sensors with different detection mechanisms, the system achieves more reliable detection in short-range areas while reducing mis-detections caused by ultrasonic sensor limitations alone.
Solution Approach 2:
The patent introduces radar sensor detection as an intermediary verification mechanism. The radar sensor acts as a mediator to verify objects detected by the ultrasonic sensor, particularly in short-range areas where ultrasonic sensors are prone to mis-detection due to structure reflection and noise.
2Reliability
If multiple sensors are used to improve detection accuracy, then detection reliability is improved, but device complexity increases
Solution Approach 1:
The controller is designed to handle multiple sensor types (ultrasonic and radar sensors) and perform multiple functions including data reception, processing, and object detection. This multi-functionality allows the system to improve detection reliability without proportionally increasing overall system complexity.
Solution Approach 2:
The patent segments the detection task into two parts: direct detection by ultrasonic sensors and indirect detection by radar sensors. Each sensor type handles specific detection scenarios, allowing the system to leverage the strengths of each sensor while managing complexity through functional segmentation.
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 object detection accuracy by distinguishing between direct and indirect detections, reducing false alarms and improving performance in both short-range and long-range areas through the use of multiple sensors and advanced signal processing.
Implementation Method 1
The apparatus for detecting the object using the ultrasonic sensor may transmit an ultrasonic signal and also receive an ultrasonic signal reflected from the object through the ultrasonic sensor and detect the object on the basis of the ultrasonic signal
Implementation Method 2
receive an ultrasonic signal reflected from the object
Implementation Method 3
a plurality of sensors mounted to a vehicle including a radar sensor
Data Source
AI summary
Disclosed are an apparatus and a method for controlling a vehicle based on a detected object. The apparatus may detect an object through a plurality of ultrasonic sensors, and directly and indirectly detect the object through the plurality of ultrasonic sensors by a controller and if at least one of a direct distance value and an indirect distance value from the object is equal to or smaller than a preset distance determination reference value, determine that the object exists in a short-range area.