Vehicle Sensor Calibration With Adjustable Target Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing calibration apparatuses for vehicular sensors in advanced driver assistance systems (ADAS) are bulky and require multiple measurements in controlled environments, making the setup process inefficient and impractical for field environments.
Innovation Solution
A sensor calibration apparatus comprising a mat with placement indicators and a target assembly with adjustable components, including a base member, upright member, coupling bracket, pitch bracket, target, and roll knob, allowing for quick and reliable alignment of sensors in various vehicle configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing calibration apparatuses are used, then sensor calibration can be performed, but the apparatus is bulky and requires multiple measurements in controlled environments
Solution Approach 1:
The calibration apparatus is divided into separate components: a target assembly with adjustable components (coupling bracket, pitch bracket, roll knob) and a mat with markings. This segmentation allows each component to be optimized independently, reducing overall bulk while maintaining calibration functionality.
Solution Approach 2:
The target assembly incorporates dynamic adjustment mechanisms including a coupling bracket for vertical positioning, a pitch bracket with hinge for angular adjustment, and a roll knob for rotational alignment. These dynamic elements enable the apparatus to adapt to various sensor configurations without requiring multiple fixed apparatuses.
2Measurement precision
If existing calibration apparatuses are used, then calibration can be performed, but repeated measurements are required to find appropriate placement
Solution Approach 1:
The mat includes pre-marked placement indicators showing the exact positions where the target assembly should be placed relative to the vehicle. This preliminary marking eliminates the need for repeated trial measurements to find appropriate placement, reducing setup time while ensuring precise calibration positioning.
Solution Approach 2:
The invention replaces the mechanical trial-and-error adjustment process with a visual guidance system using marked indicators on the mat. This substitution allows operators to directly position the target assembly based on visual cues rather than performing repeated mechanical measurements and adjustments.
3Reliability
If existing calibration apparatuses are used, then calibration can be performed, but the process is inefficient and impractical for field environments
Solution Approach 1:
The target assembly features multiple degrees of freedom through its adjustable brackets and knobs, enabling it to adapt to various ground conditions and vehicle positions in field environments. This dynamic adjustability maintains calibration reliability without requiring controlled environment conditions.
Solution Approach 2:
The calibration apparatus is designed to be universally applicable across different vehicle types and sensor configurations. The adjustable target assembly can be positioned and oriented to accommodate various mounting locations, making the system practical for field deployment across diverse applications.
Data Source
AI summary
An apparatus for calibrating vehicle sensors comprising a mat and at least one target assembly. The mat is placed in a specified location in relation to a vehicle subject to a calibration process, and the target assembly is placed in relation to the mat. The target assembly comprises adjustable components to control the vertical placement, roll, and pitch of the target with respect to the vehicle.