Portable Calibration Assembly for ADAS Sensor Recalibration
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Solution Overview
Problem
Existing ADAS calibration fixtures are large, heavy, and expensive, requiring vehicles to be transported to calibration centers, which is burdensome for owners and limits access due to their complexity and time-consuming alignment processes.
Innovation Solution
A portable calibration assembly comprising a collapsible calibration fixture and bumper alignment fixtures that can be transported to vehicles, featuring a main frame, pivotally coupled pillar member, and adjustable arms for easy alignment, allowing for on-site calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional calibration fixtures are used, then calibration precision is maintained, but device size and weight increase, requiring vehicles to be transported to calibration centers
Solution Approach 1:
The calibration fixture is divided into multiple segments including a base unit, adjustable arms, and a target assembly that can be independently positioned. This segmentation allows the fixture to be collapsed into a compact form for transport while maintaining calibration precision when deployed, directly resolving the contradiction between precision and portability.
Solution Approach 2:
The fixture incorporates dynamic elements such as adjustable arms with variable lengths and positions, and a collapsible structure that transitions between deployed and transported states. This dynamic design enables the fixture to adapt its configuration based on operational needs, maintaining calibration accuracy during use while reducing size for transport.
2Measurement precision
If traditional calibration fixtures are used, then calibration accuracy is maintained, but alignment process becomes complex and time-consuming
Solution Approach 1:
The fixture incorporates self-aligning features such as automated target positioning systems and built-in alignment references that automatically establish the correct calibration geometry without requiring complex manual alignment procedures. This self-service capability maintains calibration accuracy while significantly reducing alignment complexity and time requirements.
Solution Approach 2:
The fixture includes pre-configured alignment features and pre-positioned components that establish the correct calibration geometry before the actual calibration process begins. This preliminary action eliminates the need for complex real-time alignment procedures, maintaining accuracy while simplifying the overall process.
3Ease of operation
If portable calibration fixtures are designed, then device portability is improved, but structural stability and precision may be compromised
Solution Approach 1:
The fixture uses segmented construction with modular components that can be collapsed for portability but assemble into a stable, rigid structure during calibration. The segmented design allows for compact transport while maintaining structural stability when deployed, resolving the contradiction between portability and stability.
Solution Approach 2:
The fixture incorporates composite materials and hybrid structural designs that provide both lightweight portability and structural rigidity. This use of composite construction allows the fixture to be easily transported while maintaining the stability required for precise calibration measurements.
Data Source
AI summary
A portable calibration assembly and associated method. In an embodiment, a portable calibration assembly comprises a calibration fixture configured to hold one or more calibration targets for a vehicle. The calibration fixture comprises a main frame comprising a base member configured to rest on a supporting surface, and a pillar member having a first end portion pivotally coupled to the base member. The calibration fixture further comprises a plurality of arms, where each of the arms has a free end, and a connected end pivotally coupled to a second end portion of the pillar member.