Vehicular Sensing System 3D Object Localization
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Solution Overview
Problem
Conventional vehicle sensing systems are limited to detecting objects in two dimensions near the ground, failing to provide comprehensive three-dimensional object localization and coverage behind the vehicle, especially when reversing or maneuvering.
Innovation Solution
A vehicle sensing system employing multiple sensors, including ultrasonic sensors, is strategically placed at both the bumper and rear roofline of a vehicle, with overlapping fields of sensing to capture and process data in three dimensions, utilizing an electronic control unit for data processing and object localization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional ultrasonic sensors are placed only at the rear bumper, then the system is simple and cost-effective, but it can only detect objects in two dimensions near the ground, failing to provide comprehensive three-dimensional object localization
Solution Approach 1:
The patent transitions from two-dimensional ground-level detection to three-dimensional spatial detection by adding sensors at the rear roofline. This vertical dimension enables the system to detect objects at multiple heights and calculate three-dimensional locations using triangulation principles, resolving the limitation of conventional bumper-mounted sensors.
Solution Approach 2:
The sensor system is segmented into two distinct sets: first set of sensors at the rear bumper and second set of sensors at the rear roofline. Each set detects objects in its respective field, and the electronic control unit integrates data from both segments to achieve comprehensive three-dimensional object localization.
2Adaptability or versatility
If multiple sensors are deployed at both bumper and rear roofline, then comprehensive three-dimensional coverage is achieved, but the device complexity and cost increase
Solution Approach 1:
Both the first set of bumper sensors and second set of roofline sensors serve multiple functions: detecting objects at different locations, determining three-dimensional positions, and providing comprehensive coverage for reversing and parking operations. This multi-functionality justifies the added complexity.
Solution Approach 2:
The patent merges data from two separate sensor sets (bumper sensors and roofline sensors) through the electronic control unit. By combining the detection results from both sets, the system achieves comprehensive three-dimensional object localization that neither set could achieve alone.
3Reliability
If sensors are positioned to cover overlapping fields, then object detection reliability improves, but the number of sensors and system complexity increases
Solution Approach 1:
The electronic control unit processes data from both sensor sets and uses the overlapping fields to verify and confirm object detections. This feedback mechanism enhances reliability by cross-validating information from multiple sensor sources before triggering alerts or warnings.
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
Enables accurate three-dimensional detection and localization of objects behind the vehicle, enhancing safety during reversing and parking by providing comprehensive coverage and alert systems for the driver.
Implementation Method 1
The present invention relates generally to a vehicle sensing system for a vehicle and, more particularly, to a vehicle sensing system that utilizes one or more sensors at a vehicle to provide a field of sensing around the vehicle
Implementation Method 2
each first sensor of the first set of sensors has a respective first field of sensing that extends exterior and at least rearward of the vehicle
Data Source
AI summary
A vehicular sensing system includes a first set of first sensors disposed at a first rear portion of a vehicle. The system includes a second set of second sensors disposed at a second rear portion of the vehicle that is above the first rear portion of the vehicle. A respective first field of sensing of at least one first sensor at least partially overlaps a respective second field of sensing of at least one second sensor. The system includes an electronic control unit (ECU) for processing sensor data to detect objects that are located within the at least partially overlapping fields of sensing of the at least one first sensor and the at least one second sensor. The vehicular sensing system, responsive to detecting the objects that are located within the at least partially overlapping fields of sensing, determines three-dimensional locations of the detected objects relative to the vehicle.