Vehicle Mirror Assembly Sensor Calibration via Dynamic Positioning
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Solution Overview
Problem
Conventional towing mirror assemblies lack the ability to selectively position and activate sensors based on vehicle data, leading to suboptimal views and sensor calibration when towing objects, which affects the accuracy of functions like blind spot monitoring and lane keeping assist.
Innovation Solution
A vehicle system with a mirror assembly that includes a mirror body, actuators to move between extended and retracted positions, and a controller that adjusts the mirror position and activates sensors based on data from rear sensors, calibrating the sensors during the extended position to optimize the view and sensor functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional towing mirror assemblies are used without selective positioning and sensor activation, then the device complexity is reduced, but the measurement precision and reliability of sensor functions deteriorate
Solution Approach 1:
The system performs preliminary positioning of the mirror assembly to a known reference position before conducting sensor calibration. This preliminary action establishes a baseline configuration that enables accurate calibration of the sensors without requiring complex real-time adjustments during calibration operations.
Solution Approach 2:
The mirror assembly incorporates dynamic positioning capabilities with actuators that can adjust the mirror to various positions. The system dynamically transitions between operational positions (for towing) and calibration positions (for sensor alignment), enabling both high measurement precision and manageable device complexity through controlled adaptability.
2Reliability
If the mirror assembly is selectively positioned and sensors activated based on vehicle information, then the reliability of vehicle functions is improved, but the ease of operation deteriorates
Solution Approach 1:
The controller automatically determines when sensor calibration is needed based on detected vehicle conditions (such as towing detection), and autonomously executes the calibration sequence without requiring manual user intervention. The system self-manages the complex positioning and calibration operations, maintaining high reliability while preserving ease of operation.
Solution Approach 2:
The system incorporates feedback mechanisms where the controller continuously monitors sensor data and mirror position to determine when calibration is required. This feedback loop enables the system to automatically initiate calibration only when necessary, maintaining function accuracy while avoiding unnecessary operational complexity for the user.
3Productivity
If sensors are calibrated during extended position adjustment, then the productivity of calibration process is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The system performs preliminary positioning of the mirror assembly to a precisely defined reference position before initiating sensor calibration. This preliminary action ensures that the calibration process begins from a known, accurate configuration, enabling efficient calibration execution while maintaining high positioning precision requirements.
Solution Approach 2:
The system replaces manual mechanical calibration procedures with an automated controller that electronically coordinates mirror positioning and sensor calibration. This substitution enables the calibration to occur during normal extended position adjustment operations, improving productivity while the controller maintains the necessary positioning precision through electronic control.
Data Source
AI summary
A system is disclosed and includes a vehicle. The vehicle includes a plurality of sensors including a first set and a second set. The vehicle includes a mirror assembly that includes a mirror body and one or more actuators that are actuable to move the mirror assembly between an extended position and a retracted position. The second set is positioned on the mirror assembly. The vehicle includes a controller communicatively coupled to the plurality of sensors and the one or more actuators, and the controller causes the one or more actuators to adjust a position of the mirror body based on information received from the first set. The controller selectively activates the second set based on the position of the mirror body. The controller calibrates the second set of the plurality of sensors while the position of the mirror body is being set to the extended position.